US20050242661A1 - Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system - Google Patents
Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system Download PDFInfo
- Publication number
- US20050242661A1 US20050242661A1 US11/178,473 US17847305A US2005242661A1 US 20050242661 A1 US20050242661 A1 US 20050242661A1 US 17847305 A US17847305 A US 17847305A US 2005242661 A1 US2005242661 A1 US 2005242661A1
- Authority
- US
- United States
- Prior art keywords
- hydraulic unit
- housing
- support
- lateral side
- attached
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
- B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
- B60T8/3685—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders characterised by the mounting of the modulator unit onto the vehicle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S303/00—Fluid-pressure and analogous brake systems
- Y10S303/10—Valve block integrating pump, valves, solenoid, accumulator
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
A support structure for supporting a hydraulic unit of a brake system on a vehicle body is provided. The hydraulic unit has a housing and a motor attached to a lateral side surface of the housing. The hydraulic unit has a predetermined support width and is supported at two or more support positions on a vehicle body by way of resilient members. The support structure comprises a support member for supporting the hydraulic unit in such a manner as to allow a gravitational axis of the hydraulic unit to be disposed within the support width when viewed in a side elevation. A hydraulic unit arrangement and a method for supporting the hydraulic unit are also provided.
Description
- The present application is a continuation of application Ser. No. 10/843,380, filed May 12, 2004, which is a continuation of U.S. application Ser. No. 10/166,171, filed Jun. 11, 2002 (now U.S. Pat. No. 6,746,089), the entire contents of which are incorporated herein by reference.
- The present invention relates to a support structure for supporting a hydraulic unit of a brake system on a vehicle body. More particularly, the present invention relates to a support structure of a hydraulic unit that is disposed in a braking circuit connecting between a master cylinder and a wheel cylinder for controlling a braking pressure for an anti-lock control and a traction control. Further, the present invention relates to a hydraulic unit arrangement for a vehicle brake system. Further, the present invention relates to a method for supporting a hydraulic unit of a brake system on a vehicle body.
- It is an object of the present invention to provide a support structure for supporting a hydraulic unit of a brake system on a vehicle body which can prevent cantilever vibrations of the hydraulic unit thereby preventing an uncomfortable feel of a driver and deterioration of the rigidity with which the hydraulic unit is attached to a vehicle body.
- It is a further object of the present invention to provide a hydraulic unit arrangement for a vehicle brake system in which the hydraulic unit is supported on a vehicle body by a support structure of the foregoing character.
- It is a further object of the present invention to provide a method for supporting a hydraulic unit of a brake system on a vehicle body.
- To achieve the above object, there is provided according to an aspect of the present invention a support structure for supporting a hydraulic unit of a brake system on a vehicle body, the hydraulic unit having a housing and a motor attached to a lateral side surface of the housing, the hydraulic unit having a predetermined support width and supported at two or more support positions on a vehicle body by way of resilient members, the support structure comprising a support member for supporting the hydraulic unit in such a manner as to allow a gravitational axis of the hydraulic unit to be disposed within the support width when viewed in a side elevation.
- According to another aspect of the present invention, there is provided a method for supporting a hydraulic unit of a brake system on a vehicle body, the hydraulic unit having a housing and a motor attached to a lateral side surface of the housing, the hydraulic unit having a predetermined support width and supported at two or more support positions on a vehicle body by way of resilient members, the method comprising determining the support positions so as to allow a gravitational axis of the hydraulic unit to be disposed within the support width when viewed in a side elevation.
- The other objects and features of this invention will become understood from the following description with reference to the accompanying drawings.
-
FIG. 1 is a side elevation of a support structure for supporting a hydraulic unit of a brake system on a vehicle body according to a first embodiment of the present invention; -
FIG. 2 is an elevation of the support structure ofFIG. 1 ; and -
FIG. 3 is a side elevation of a support structure for supporting a hydraulic unit of a brake system on a vehicle body according to a second embodiment of the present invention. - A brake system controls increase and decrease of a wheel cylinder pressure for an anti-skid control, a vehicle yaw moment control through a braking force control and a vehicle driving torque control. Such a brake system has a hydraulic unit disposed within an engine compartment. The hydraulic unit generally includes a braking circuit connecting between a master cylinder and a wheel cylinder, a housing having incorporated therein a pump and an electromagnetic valve for controlling increase and decrease a wheel cylinder pressure, and a motor that drives the pump and is attached to a lateral side surface of the housing.
- A support structure for supporting such a hydraulic unit on a vehicle body is disclosed in Japanese Patent Provisional Publication No. 10-250549. The support structure includes a bracket fixedly attached to the vehicle body. The bracket has a nearly channel-shaped support section on which the housing is supported at two places thereof by way of vibration-proof rubber members.
- In such a support structure, the motor is heavier than the housing so that the center of gravity of the hydraulic unit is positioned on a motor side of the center of the housing. In this instance, since the housing is supported at two support points that are located on the opposite end surfaces thereof, the center of gravity of the hydraulic unit is positioned outside the support points.
- For this reason, when vibrations of the hydraulic unit are caused by variations of the hydraulic pressure in the brake circuit that are caused by the drive of the motor and the control of the wheel cylinder pressure, there are caused in the hydraulic unit, cantilever vibrations, i.e., vibrations of the center of gravity that is positioned outside the support points.
- Such cantilever vibrations causes a problem that uncomfortable vibrations are imparted to the driver by way of the brake piping and master cylinder and a problem that fastening bolts that fasten the hydraulic unit to the vehicle body tend to become loose to deteriorate the rigidity with which the hydraulic unit is attached to the vehicle body.
- Further, when the center of gravity of the hydraulic unit is positioned on a brake piping side of the center of the housing, there occurs such a condition in which the weight of the hydraulic unit is applied axially of the brake piping so that vibrations of the brake pipes are enhanced by the cantilever vibrations.
- A support structure for supporting a hydraulic unit of a brake system on a vehicle body according to the present invention, which is free from the above described problem, will be described with reference to the attached drawings.
- Referring first to
FIG. 1 , a hydraulic unit is generally indicated by 1 and includeshousing 2,motor 4 attached to one 2 a of lateral side surfaces that are opposed left and right inFIG. 2 , andcase 6 attached to the other of the lateral side surfaces. - Within
housing 2 are incorporated, though not shown, a portion of a brake circuit connecting between a master cylinder and a wheel cylinder and, though also not shown, a plunger pump, etc. - Further, though not shown, a plurality of openings is formed in motor attaching
lateral side surface 2 a and an upper surface ofhousing 2 and connected withbrake pipes - The
Motor 4, which has a center line mc, is provided for driving the plunger pump (not shown) and is covered bymotor case 4 c attached tohousing 2 and doubling as a yoke. -
Case 6 accommodates therewithin, though not shown, an electromagnetic valve and an electronic unit for controlling a drive of the electromagnetic valve andmotor 4. On the side portion ofcase 6 is disposedconnector 61 that is connected by an outside electric circuit so as to supply electric signals to the above-described electronic unit andmotor 4. - In the meantime, to the lower surface of
housing 2 are attachedreservoirs -
Hydraulic unit 1 is fixedly attached tovehicle body 15 by means ofbracket 10. -
Bracket 10 is generally rectangular when viewed in plan and includes rectangularlower support section 11,leg sections lower support section 11 to have ends to be abuttingly engaged withvehicle body 15, and lateralside support section 14 extending upward from the remaining side oflower support section 11 and disposed opposite to motor attachinglateral side surface 2 a ofhousing 2. In the meantime,leg sections bolt holes -
Lower support section 11 is formed with a bolt hole (not shown) a center axis of which is located on a vertical plane on which motor axis mc ofmotor 4 is located. Vibration-proof rubber member orresilient member 31 is fitted in the bolt hole of thelower support section 11.Bolt 51 is inserted into vibration-proof rubber member 31 from a lowerside support surface 11 b oflower support section 11 to extend therethrough and fastened tolower surface 2 c ofhousing 2. By this, vibration-proof rubber member 31 is disposed between lowerside support surface 11 b that is the upper surface oflower support section 11 andlower surface 2 c ofhousing 2. - Lateral
side support section 14 ofbracket 10 is formed with bolt holes (not shown) at which lateral side support positions SP are located. Lateral side support positions SP are disposed at horizontally opposite end portions of lateralside support section 14 as shown inFIG. 2 . In the bolt holes of lateralside support section 14 are fitted vibration-proof rubber members orresilient members 32.Bolts 52 are inserted into vibration-proof rubber members 32 from the left-hand side inFIG. 1 (left and right inFIG. 1 is a front-to-rear direction of a vehicle) to extend therethrough and fastened to motor attachinglateral side surface 2 c ofhousing 2. By this, each vibration-proof rubber member 32 is disposed between lateralside support surface 14 b of lateralside support section 14 and motor attachinglateral side surface 2 a ofhousing 2. - As shown in
FIG. 1 , center M of gravity ofhydraulic unit 1 is positioned on themotor 4 side of the center ofhousing 2 sincemotor 4 is heavy. In this embodiment, gravitational axis ML that is an axis indicative of the direction of gravity is disposed so as to be within support width KL that is an interval between lower support position UP and lateral side support position SP. - Since the center M of gravity of
hydraulic unit 1 is disposed within the support width KL between the support positions UP, SP, cantilever vibrations as discussed with respect to the related art hereinbefore are not caused even whenhydraulic unit 1 is caused to vibrate. Thus, as compared with the support structure of the related art, the vibration of thehydraulic unit 1 can be suppressed and made smaller, thus making it possible to prevent an uncomfortable feel of a driver and deterioration of the rigidity with whichhydraulic unit 1 is attached tovehicle body 15 bybolts - More specifically, in this embodiment,
brake pipes hydraulic unit 1 with respect to support positions SP, UP. Thus, if cantilever vibrations are caused inhydraulic unit 1,brake pipes brake pipes 102 are pushed axially thereof, thus tending to transmit those vibrations to the driver. However, in this embodiment, cantilever vibrations ofhydraulic unit 1 can be suppressed as described above, thus making it possible to solve the problem otherwise caused by vibrations ofpipes -
FIG. 3 shows a second embodiment of the present invention. InFIG. 3 , like parts and portions to those of the previous embodiment described with reference toFIGS. 1 and 2 will be designated by like reference characters and will not be described again for brevity. - In this embodiment,
motor 204 ofhydraulic unit 201 is larger in capacity and in axial size as compared with that in the previous embodiment. As a result, as shown inFIG. 3 , center M of gravity is moved more away fromhousing 2 into a position nearer to the center ofmotor 204 as compared with that in the previous embodiment. - For this reason,
bracket 210 is structured so thatlower support section 211 has a larger size in the front-to-rear direction (in the left to right direction inFIG. 3 ) and lateral side support position SP onside support section 214 is disposed more away from lower side support position UP. By moving lateral side support position SP more away from lower side support position UP in the above manner, the distance between vibration-proof rubber member 32 and motor attachinglateral side surface 2 a ofhousing 2 becomes larger. Thus, in this embodiment,extension fixing member 200 in the form of a metallic tube is disposed between vibration-proof rubber member 32 and motor attachinglateral side surface 2 a ofhousing 2. - Further, in this embodiment,
bracket 210 may be attached to the vehicle body, with lowerside support section 211 being held horizontal or inclined according to the necessity. Namely, lowerside support section 211 may be disposed to be nearly horizontal so that the gravitational axis extending from center M of gravity coincides with arrow UD shown inFIG. 3 orbracket 210 may be inclined so that arrow UD2 is directed vertically or may be inclined in the opposite direction. - Further,
bracket 210 may be attached to the vehicle body directly or a support member (not shown) may be interposed between the vehicle body andbracket 210. - Though center M of gravity in this embodiment is more distant from
housing 2 as compared with that in the first embodiment, this embodiment can produce substantially the same effect as the first embodiment by using modifiedbracket 210 andextension fixing member 200 thereby disposing center M of gravity within the support width (i.e., inFIG. 3 , KL1 is the support width when the gravitational axis is UD and KL2 is the support width when the gravitational axis is UD2). - The entire contents of Japanese Patent Application P2001-178276 are incorporated herein by reference.
- Although the invention has been described above by reference to certain embodiments of the invention, the invention is not limited to the embodiments described above. Modifications and variations of the embodiment described above will occur to those skilled in the art, in light of the above teachings. For example, while the number of support positions of
housing 2 is described as three, it can be two or more than four so long as support positions UP, SP are adapted to provide predetermined support width KL. The scope of the invention is defined with reference to the following claims.
Claims (6)
1. A support structure for supporting a hydraulic unit of a brake system on a vehicle body, wherein the hydraulic unit includes first brake pipes fluidly connected to a hydraulic pressure source, second brake pipes fluidly connected to respective wheel cylinders, a housing with lateral side surfaces and a lower side surface that enclose the hydraulic unit, the housing having therewithin a pump fluidly connected with the first and second brake pipes for controlling wheel cylinder pressures, and a motor attached to one of the lateral side surfaces of the housing for driving the pump, the support structure comprising a support member for supporting the hydraulic unit on the vehicle body at two or more of support positions;
wherein the supporting member is attached at two of the support positions to one of the lateral side surfaces of the housing by way of resilient members;
wherein the first brake pipes are connected to the housing; and
wherein joining portions between the first brake pipes and said one of the lateral side surface of the housing are disposed nearly between axes that extend through said two of the support positions in parallel with a gravitational axis of the housing unit when observed in an elevation.
2. A support structure according to claim 1 , wherein the support member is attached at another of the support positions to the lower side surface of the housing.
3. A support structure according to claim 1 , wherein said one of the lateral side surfaces to which the support member is attached at said one of the support positions and said one of the lateral side surfaces to which the motor is attached are the same.
4. A hydraulic unit arrangement for a vehicle brake system comprising:
a hydraulic unit having first brake pipes fluidly connected to a hydraulic pressure source, second brake pipes fluidly connected to respective wheel cylinders, a housing with lateral side surfaces and a lower side surface that enclose the hydraulic unit, the housing having therewithin a pump fluidly connected with the first and second brake pipes for controlling wheel cylinder pressures, and a motor attached to one of the lateral side surfaces of the housing for driving the pump; and
a support member for supporting the hydraulic unit on the vehicle body at two or more of support positions;
wherein the supporting member is attached at two of the support positions to one of the lateral side surfaces of the housing by way of resilient members;
wherein the first brake pipes are connected to the housing; and
wherein joining portions between the first brake pipes and said one of the lateral side surface of the housing are disposed nearly between axes that extend through said two of the support positions in parallel with a gravitational axis of the housing unit when observed in an elevation.
5. A hydraulic unit arrangement according to claim 4 , wherein the support member is attached at another of the support positions to the lower side surface of the housing.
6. A hydraulic unit arrangement according to claim 4 , wherein said one of the lateral side surfaces to which the support member is attached at said one of the support positions and said one of the lateral side surfaces to which the motor is attached are the same.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/178,473 US20050242661A1 (en) | 2001-06-13 | 2005-07-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-178276 | 2001-06-13 | ||
JP2001178276A JP3720278B2 (en) | 2001-06-13 | 2001-06-13 | Brake unit hydraulic unit support structure |
US10/166,171 US6746089B2 (en) | 2001-06-13 | 2002-06-11 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
US10/843,380 US6932439B2 (en) | 2001-06-13 | 2004-05-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
US11/178,473 US20050242661A1 (en) | 2001-06-13 | 2005-07-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/843,380 Continuation US6932439B2 (en) | 2001-06-13 | 2004-05-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
Publications (1)
Publication Number | Publication Date |
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US20050242661A1 true US20050242661A1 (en) | 2005-11-03 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/166,171 Expired - Lifetime US6746089B2 (en) | 2001-06-13 | 2002-06-11 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
US10/843,380 Expired - Lifetime US6932439B2 (en) | 2001-06-13 | 2004-05-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
US11/178,473 Abandoned US20050242661A1 (en) | 2001-06-13 | 2005-07-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/166,171 Expired - Lifetime US6746089B2 (en) | 2001-06-13 | 2002-06-11 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
US10/843,380 Expired - Lifetime US6932439B2 (en) | 2001-06-13 | 2004-05-12 | Support structure and method for supporting a hydraulic unit of a brake system on a vehicle body, and hydraulic unit arrangement for a vehicle brake system |
Country Status (3)
Country | Link |
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US (3) | US6746089B2 (en) |
JP (1) | JP3720278B2 (en) |
DE (1) | DE10226085B4 (en) |
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- 2002-06-11 US US10/166,171 patent/US6746089B2/en not_active Expired - Lifetime
- 2002-06-12 DE DE10226085A patent/DE10226085B4/en not_active Expired - Fee Related
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2004
- 2004-05-12 US US10/843,380 patent/US6932439B2/en not_active Expired - Lifetime
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2005
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100264723A1 (en) * | 2007-11-02 | 2010-10-21 | Hiroaki Atsushi | Brake fluid pressure control device |
US8746810B2 (en) * | 2007-11-02 | 2014-06-10 | Bosch Corporation | Brake fluid pressure control device |
US20120267946A1 (en) * | 2011-04-25 | 2012-10-25 | Denso Corporation | Annular seal member and brake fluid pressure control apparatus using the same |
US9764723B2 (en) | 2012-09-21 | 2017-09-19 | Hitachi Automotive Systems, Ltd. | Brake unit |
Also Published As
Publication number | Publication date |
---|---|
US6932439B2 (en) | 2005-08-23 |
US20040207254A1 (en) | 2004-10-21 |
JP2002370635A (en) | 2002-12-24 |
US6746089B2 (en) | 2004-06-08 |
DE10226085A1 (en) | 2003-01-02 |
JP3720278B2 (en) | 2005-11-24 |
DE10226085B4 (en) | 2010-07-15 |
US20020190572A1 (en) | 2002-12-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |