GB2110344A - Non return valve - Google Patents

Non return valve Download PDF

Info

Publication number
GB2110344A
GB2110344A GB08233798A GB8233798A GB2110344A GB 2110344 A GB2110344 A GB 2110344A GB 08233798 A GB08233798 A GB 08233798A GB 8233798 A GB8233798 A GB 8233798A GB 2110344 A GB2110344 A GB 2110344A
Authority
GB
United Kingdom
Prior art keywords
valve
sealing element
spring
membrane
valve housing
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.)
Granted
Application number
GB08233798A
Other versions
GB2110344B (en
Inventor
Josef Messinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mecano Bundy GmbH
Original Assignee
Mecano Bundy GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mecano Bundy GmbH filed Critical Mecano Bundy GmbH
Publication of GB2110344A publication Critical patent/GB2110344A/en
Application granted granted Critical
Publication of GB2110344B publication Critical patent/GB2110344B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Details Of Valves (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

The valve is for a motor vehicle braking force intensifier and in order in use of the valve to effectively suppress vibrations of the spring (5), which loads the sealing element (1), the sealing element (1) is provided with an annular elastic membrane (2) projecting radially outward from the periphery of the element body. The outer rim of the membrane (2) rests, under light pre-stressing against the inner wall of the valve housing (3). <IMAGE>

Description

SPECIFICATION Nonreturn valve for a motor vehicle braking system The present invention relates to a nonreturn valve, for example of the kind that operates under a vacuum or negative pressure. The valve is particularly suited for use in a motor vehicle braking force intensifier.
Actuation of the above form of braking system in a vehicle can lead to strong vibrations, generally of the spring itself, which make themselves noticeable as disturbing noises in the passenger area. Attempts to suppress these noises by for example altering the elastic constant of the spring, enclosing it in synthetic material or suchlike, only led to insignificant improvements.
The present invention seeks to effectively suppress vibrations of the spring which loads the sealing element, without direct interference with the spring, so that, on operation of a braking force intensifier incorporating a valve according to this invention, no disturbing noises occur.
According to the invention, a spring loaded nonreturn valve for a motor vehicle braking force intensifier, comprises a sealing element urged by a spring against a valve seat in the valve housing, the sealing element having an annular, outwardly directed elastic membrane, the outer rim of which resiliently engages an inner wall of the valve housing.
In valves according to the invention, the sealing element itself is normally circular, although this need not always be the case.
Similarly, the membrane is normally circular although other shapes are possible and the breadth may also be varied. Thus, a circular outline on a non-circular element body is possible and vice versa. In some instances a discontinuous membrane is suitable. The design of a valve according to the invention is uncomplicated, and the unit need not therefore, be expensive. The valve can achieve a substantially noise-free operation of the braking force intensifier.
The invention will now be described by way of example and with reference to the accompanying drawing wherein: Figure 1 shows a cross-section through a nonreturn valve according to the invention; Figure 2 shows a side view of a sealing element shown in Figure 1; Figure 3 shows a plan view of Figure 2; and Figure 4 shows a plan view of a sealing element with a distorted or discontinuous annular membrane.
As shown in the drawing, in a valve housing 3 is seated a sealing element 1, in a spring plate 4 of the nonreturn valve. The sealing element 1 has an annular membrane 2 which rests, under light pre-stressing, against the inner wall of the valve housing 3.
On actuation of the brake, the spring plate 4 is raised with the seal 1 against the force of the spring 5, whereby the membrane 2 of the sealing element 1 slides against the inner wall of the valve housing 1 and causes a vibration suppression of the spring 5, so that noiseproducing vibrations do not occur.
Claims
1. A spring-loaded nonreturn valve for a motor vehicle braking force intensifier comprising a sealing element urged by a spring against a valve seat in the valve housing, the sealing element having an annular, outwardly directed elastic membrane, the outer rim of which resiliently engages an inner wall of the valve housing.
2. A valve according to Claim 1, wherein the annular membrane is discontinuous.
3. A valve according to Claim 1 wherein the radial extent of the membrane is non-uniform.
4. A valve according to any preceding Claim wherein the main body of the sealing element is circular.
5. A spring-loaded nonreturn valve substantially as described herein with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Nonreturn valve for a motor vehicle braking system The present invention relates to a nonreturn valve, for example of the kind that operates under a vacuum or negative pressure. The valve is particularly suited for use in a motor vehicle braking force intensifier. Actuation of the above form of braking system in a vehicle can lead to strong vibrations, generally of the spring itself, which make themselves noticeable as disturbing noises in the passenger area. Attempts to suppress these noises by for example altering the elastic constant of the spring, enclosing it in synthetic material or suchlike, only led to insignificant improvements. The present invention seeks to effectively suppress vibrations of the spring which loads the sealing element, without direct interference with the spring, so that, on operation of a braking force intensifier incorporating a valve according to this invention, no disturbing noises occur. According to the invention, a spring loaded nonreturn valve for a motor vehicle braking force intensifier, comprises a sealing element urged by a spring against a valve seat in the valve housing, the sealing element having an annular, outwardly directed elastic membrane, the outer rim of which resiliently engages an inner wall of the valve housing. In valves according to the invention, the sealing element itself is normally circular, although this need not always be the case. Similarly, the membrane is normally circular although other shapes are possible and the breadth may also be varied. Thus, a circular outline on a non-circular element body is possible and vice versa. In some instances a discontinuous membrane is suitable. The design of a valve according to the invention is uncomplicated, and the unit need not therefore, be expensive. The valve can achieve a substantially noise-free operation of the braking force intensifier. The invention will now be described by way of example and with reference to the accompanying drawing wherein: Figure 1 shows a cross-section through a nonreturn valve according to the invention; Figure 2 shows a side view of a sealing element shown in Figure 1; Figure 3 shows a plan view of Figure 2; and Figure 4 shows a plan view of a sealing element with a distorted or discontinuous annular membrane. As shown in the drawing, in a valve housing 3 is seated a sealing element 1, in a spring plate 4 of the nonreturn valve. The sealing element 1 has an annular membrane 2 which rests, under light pre-stressing, against the inner wall of the valve housing 3. On actuation of the brake, the spring plate 4 is raised with the seal 1 against the force of the spring 5, whereby the membrane 2 of the sealing element 1 slides against the inner wall of the valve housing 1 and causes a vibration suppression of the spring 5, so that noiseproducing vibrations do not occur. Claims
1. A spring-loaded nonreturn valve for a motor vehicle braking force intensifier comprising a sealing element urged by a spring against a valve seat in the valve housing, the sealing element having an annular, outwardly directed elastic membrane, the outer rim of which resiliently engages an inner wall of the valve housing.
2. A valve according to Claim 1, wherein the annular membrane is discontinuous.
3. A valve according to Claim 1 wherein the radial extent of the membrane is non-uniform.
4. A valve according to any preceding Claim wherein the main body of the sealing element is circular.
5. A spring-loaded nonreturn valve substantially as described herein with reference to the accompanying drawing.
GB08233798A 1981-11-27 1982-11-26 Non return valve Expired GB2110344B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813147708 DE3147708A1 (en) 1981-11-27 1981-11-27 CHECK VALVE OF A VEHICLE BRAKE POWER AMPLIFIER

Publications (2)

Publication Number Publication Date
GB2110344A true GB2110344A (en) 1983-06-15
GB2110344B GB2110344B (en) 1985-09-25

Family

ID=6147716

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08233798A Expired GB2110344B (en) 1981-11-27 1982-11-26 Non return valve

Country Status (2)

Country Link
DE (1) DE3147708A1 (en)
GB (1) GB2110344B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035015A1 (en) * 2007-07-26 2009-10-29 Bayerische Motoren Werke Aktiengesellschaft Valve i.e. pressure control valve, has guidance whose middle level runs perpendicular to axial direction from center point of valve body surface at certain distance that is smaller than radius and/or curvature radius of valve body surface
CN105318050A (en) * 2015-07-15 2016-02-10 上海华培动力科技有限公司 Air inlet check valve
EP3097331A4 (en) * 2014-01-20 2017-08-09 Dayco IP Holdings, LLC Check valve with improved sealing member
US10024339B2 (en) 2014-05-30 2018-07-17 Dayco Ip Holdings, Llc Vacuum creation system having an ejector, pneumatic control valve and optionally an aspirator
US10100720B2 (en) 2015-01-09 2018-10-16 Dayco Ip Holdings, Llc Crankcase ventilating evacuator
US10273978B2 (en) 2014-08-27 2019-04-30 Dayco IP, Holdings LLC Low-cost evacuator for an engine having tuned Venturi gaps
US10316864B2 (en) 2015-04-13 2019-06-11 Dayco Ip Holdings, Llc Devices for producing vacuum using the venturi effect
US10626888B2 (en) 2014-07-10 2020-04-21 Dayco Ip Holdings, Llc Dual Venturi device
CN111561620A (en) * 2020-06-22 2020-08-21 宁波泰尔汽车部件有限公司 Low-pressure vacuum tube

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929610C2 (en) * 1979-07-21 1986-11-13 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover check valve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035015A1 (en) * 2007-07-26 2009-10-29 Bayerische Motoren Werke Aktiengesellschaft Valve i.e. pressure control valve, has guidance whose middle level runs perpendicular to axial direction from center point of valve body surface at certain distance that is smaller than radius and/or curvature radius of valve body surface
EP3097331A4 (en) * 2014-01-20 2017-08-09 Dayco IP Holdings, LLC Check valve with improved sealing member
US10024339B2 (en) 2014-05-30 2018-07-17 Dayco Ip Holdings, Llc Vacuum creation system having an ejector, pneumatic control valve and optionally an aspirator
US10626888B2 (en) 2014-07-10 2020-04-21 Dayco Ip Holdings, Llc Dual Venturi device
US10273978B2 (en) 2014-08-27 2019-04-30 Dayco IP, Holdings LLC Low-cost evacuator for an engine having tuned Venturi gaps
US10100720B2 (en) 2015-01-09 2018-10-16 Dayco Ip Holdings, Llc Crankcase ventilating evacuator
US10316864B2 (en) 2015-04-13 2019-06-11 Dayco Ip Holdings, Llc Devices for producing vacuum using the venturi effect
CN105318050A (en) * 2015-07-15 2016-02-10 上海华培动力科技有限公司 Air inlet check valve
CN105318050B (en) * 2015-07-15 2018-03-16 上海华培动力科技股份有限公司 A kind of breather check valve
CN111561620A (en) * 2020-06-22 2020-08-21 宁波泰尔汽车部件有限公司 Low-pressure vacuum tube
CN111561620B (en) * 2020-06-22 2020-11-24 宁波泰尔汽车部件有限公司 Low-pressure vacuum tube

Also Published As

Publication number Publication date
GB2110344B (en) 1985-09-25
DE3147708A1 (en) 1983-06-16

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PCNP Patent ceased through non-payment of renewal fee