JP2015024700A - Check valve for negative pressure type booster - Google Patents

Check valve for negative pressure type booster Download PDF

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Publication number
JP2015024700A
JP2015024700A JP2013154277A JP2013154277A JP2015024700A JP 2015024700 A JP2015024700 A JP 2015024700A JP 2013154277 A JP2013154277 A JP 2013154277A JP 2013154277 A JP2013154277 A JP 2013154277A JP 2015024700 A JP2015024700 A JP 2015024700A
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Prior art keywords
valve
negative pressure
valve body
pressure type
type booster
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JP2013154277A
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Japanese (ja)
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陽治 井上
Yoji Inoue
陽治 井上
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Advics Co Ltd
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Advics Co Ltd
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Priority to JP2013154277A priority Critical patent/JP2015024700A/en
Priority to PCT/JP2014/069520 priority patent/WO2015012336A1/en
Publication of JP2015024700A publication Critical patent/JP2015024700A/en
Pending legal-status Critical Current

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    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
    • B60T17/043—Brake line couplings, air hoses and stopcocks
    • 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
    • B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
    • 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
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring

Abstract

PROBLEM TO BE SOLVED: To effectively suppress vibration of a check valve for a negative pressure type booster, the vibration being generated upon valve closure.SOLUTION: A check valve V1 for a negative pressure type booster includes: a valve housing 10 having passages Pa, Pb and a valve seat 12b; a valve element 20 incorporated into the valve housing 10; and a valve spring 30 which energizes the valve element 20 toward the valve seat 12b, and is provided in a negative pressure introduction part of the negative pressure type booster 100. In the check valve V1 for the negative pressure type booster, one-way opening means which obliquely moves the valve element 20 with respect to the valve seat 12b when the valve element 20 is separated from the valve seat 12b is installed. The one-way opening means is installed in the passages Pa, Pb of the valve housing 10, and the passage Pb on the negative pressure source side from the valve element 20 is arranged while being eccentric by a prescribed amount to the passage Pa which is on the negative pressure type booster side from the valve element 20 disposed in the valve housing 10 and which is coaxial with the valve element 20.

Description

本発明は、自動車に適用されるブレーキ装置の一構成部品である負圧式倍力装置の負圧導入部に設けられる負圧式倍力装置用チェック弁（逆止弁）に関するものである。   The present invention relates to a check valve (check valve) for a negative pressure type booster provided in a negative pressure introduction part of a negative pressure type booster that is a component of a brake device applied to an automobile.

負圧式倍力装置用チェック弁は、通路と弁座を有するバルブハウジングと、このバルブハウジング内に組み込まれる弁体およびこの弁体を前記弁座に向けて付勢するバルブスプリングを備えていて、負圧式倍力装置の負圧導入部に設けられており、例えば、下記の特許文献１に記載されている。   The negative pressure type booster check valve includes a valve housing having a passage and a valve seat, a valve body incorporated in the valve housing, and a valve spring for biasing the valve body toward the valve seat, It is provided in the negative pressure introduction part of a negative pressure type booster, for example, is described in the following Patent Document 1.

特開平６−６４５２５号公報JP-A-6-64525

上記した特許文献１に記載されている負圧式倍力装置用チェック弁においては、前記バルブハウジングに設けた前記弁体より負圧式倍力装置側で前記弁体に対して同軸的な装置側の通路に対して、前記弁体より負圧源側の通路が同軸的に配置されている。また、通常の負圧式倍力装置用チェック弁においては、前記バルブスプリングの前記弁体に対する付勢力が円周上略均一に設定され、また、前記弁体の重心が前記弁体の軸心に略一致するように設定されている。このため、従来の負圧式倍力装置用チェック弁では、弁体がバルブスプリングの付勢力に抗して円周上均等に開くこととなり、これに起因して弁体の閉止時（閉弁時）に振動が発生することがある。   In the check valve for a negative pressure booster described in Patent Document 1 described above, a device on the device side coaxial with the valve body on the negative pressure booster side from the valve body provided in the valve housing. A passage closer to the negative pressure source than the valve body is coaxially disposed with respect to the passage. Further, in a normal check valve for a negative pressure type booster, the urging force of the valve spring against the valve body is set to be substantially uniform on the circumference, and the center of gravity of the valve body is at the center of the valve body. It is set to approximately match. For this reason, in the conventional check valve for a negative pressure type booster, the valve body opens evenly on the circumference against the urging force of the valve spring, and as a result, the valve body is closed (when the valve is closed). ) May generate vibration.

本発明は、上記した課題を解消すべくなされたもの（すなわち、弁体の閉止時に生じる振動を効果的に抑制するもの）であり、通路と弁座を有するバルブハウジングと、このバルブハウジング内に組み込まれる弁体およびこの弁体を前記弁座に向けて付勢するバルブスプリングを備えていて、負圧式倍力装置の負圧導入部に設けられる負圧式倍力装置用チェック弁において、前記弁体が前記弁座から離れる際に、前記弁座に対して前記弁体を傾動させる片開き手段が設定されていることに特徴がある。   The present invention has been made to solve the above-described problems (that is, to effectively suppress vibration generated when the valve body is closed), and includes a valve housing having a passage and a valve seat, and the valve housing. In a check valve for a negative pressure type booster comprising a valve body to be incorporated and a valve spring for urging the valve body toward the valve seat, the check valve for a negative pressure type booster provided in a negative pressure introduction part of the negative pressure type booster It is characterized in that a single opening means is provided for tilting the valve body with respect to the valve seat when the body leaves the valve seat.

本発明による負圧式倍力装置用チェック弁においては、前記弁体が前記弁座から離れる際に、前記弁座に対して前記弁体を傾動させる片開き手段が設定されているため、弁体がバルブスプリングの付勢力に抗して開くときには、片開き状態にて開くこととなる。このため、弁体の閉止時には、弁体が弁座に片当り状態から着座することとなって、弁体の振動発生が抑制される。   In the check valve for a negative pressure type booster according to the present invention, when the valve body is separated from the valve seat, a single opening means for tilting the valve body with respect to the valve seat is set. When it opens against the urging force of the valve spring, it opens in a single-open state. For this reason, when the valve body is closed, the valve body is seated on the valve seat from the one-sided state, and the occurrence of vibration of the valve body is suppressed.

また、本発明による負圧式倍力装置用チェック弁においては、バルブスプリングの付勢力を低減することなく実施することが可能であるため、当該チェック弁での気密性を良好に維持することが可能である。   Further, in the check valve for a negative pressure type booster according to the present invention, it is possible to carry out without reducing the urging force of the valve spring, so that the airtightness of the check valve can be maintained well. It is.

上記した本発明の実施に際して、前記片開き手段は、前記バルブハウジングの前記通路に設定されていることも可能であり、この場合において、前記バルブハウジングに設けた前記弁体より負圧式倍力装置側で前記弁体に対して同軸的な負圧式倍力装置側の通路に対して、前記弁体より負圧源側の通路が所定量偏心して配置されていること、または、前記バルブハウジングに設けた前記弁体より負圧式倍力装置側で前記弁体に対して同軸的な負圧式倍力装置側の通路に対して、前記弁体より負圧源側の通路が所定量傾斜して配置されていることも可能である。これらの場合には、前記バルブスプリングの前記弁体に対する付勢力を円周上略均一に設定すること、および、前記弁体の重心を前記弁体の軸心に略一致させるように設定することが可能であり、弁体の弁座に対する着座部に偏荷重が作用することがなくて、着座部での弁体の偏変形の発生を抑制することが可能である。   In carrying out the above-described present invention, the one-side opening means can be set in the passage of the valve housing. In this case, a negative pressure type booster is used from the valve body provided in the valve housing. The passage on the negative pressure source side that is coaxial with respect to the valve body on the side is arranged by a predetermined amount eccentric from the valve body, or in the valve housing The passage on the negative pressure source side from the valve body is inclined by a predetermined amount with respect to the passage on the negative pressure booster side coaxial with the valve body on the negative pressure booster side from the provided valve body. It can also be arranged. In these cases, the urging force of the valve spring against the valve body is set to be substantially uniform on the circumference, and the center of gravity of the valve body is set to substantially coincide with the axis of the valve body. Therefore, an uneven load is not applied to the seating portion of the valve body with respect to the valve seat, and the occurrence of partial deformation of the valve body at the seating portion can be suppressed.

また、上記した本発明の実施に際して、前記片開き手段は、前記バルブスプリングに設定されていて、前記バルブスプリングの前記弁体に対する付勢力が円周上の一箇所にて他の箇所に比して高く設定されていることも可能である。また、前記片開き手段は、前記弁体に設定されていて、前記弁体の重心が前記弁体の軸心に対して所定量偏心して設定されていることも可能である。これらの場合には、バルブハウジングにおいて、弁体に対して同軸的な負圧式倍力装置側の通路に対して、負圧源側の通路を同軸的に配置することが可能であり、バルブハウジングの構成をシンプルとしてバルブハウジングを安価とすることが可能である。   Further, in the implementation of the present invention described above, the one-side opening means is set to the valve spring, and the biasing force of the valve spring against the valve body is one place on the circumference as compared with the other places. It can also be set high. Further, the one-side opening means may be set on the valve body, and the center of gravity of the valve body may be set eccentrically by a predetermined amount with respect to the axis of the valve body. In these cases, in the valve housing, the negative pressure source side passage can be arranged coaxially with respect to the negative pressure booster side passage coaxial with the valve body. Thus, the valve housing can be made inexpensive.

本発明による負圧式倍力装置用チェック弁の第１実施形態を示した縦断側面図である。It is the vertical side view which showed 1st Embodiment of the check valve for negative pressure type boosters by this invention. 本発明による負圧式倍力装置用チェック弁の第２実施形態を示した縦断側面図である。It is the vertical side view which showed 2nd Embodiment of the check valve for negative pressure type boosters by this invention. 本発明による負圧式倍力装置用チェック弁の第３実施形態を示した縦断側面図である。It is the vertical side view which showed 3rd Embodiment of the check valve for negative pressure type boosters by this invention.

以下に、本発明の実施形態を図面に基づいて説明する。図１は本発明による負圧式倍力装置用チェック弁の第１実施形態を示していて、この第１実施形態の負圧式倍力装置用チェック弁Ｖ１は、通路Ｐａ，Ｐｂと弁座１２ｂを有するバルブハウジング１０と、このバルブハウジング１０内に組み込まれる弁体２０およびこの弁体２０を弁座１２ｂに向けて付勢するバルブスプリング３０を備えていて、負圧式倍力装置１００の負圧導入部、すなわち、負圧式倍力装置１００と負圧源２００（例えば、エンジンの吸気マニホールド）を接続する部位に設けられている。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a check valve for a negative pressure booster according to the present invention. The check valve V1 for a negative pressure booster according to the first embodiment includes passages Pa and Pb and a valve seat 12b. The valve housing 10 has a valve body 20 incorporated in the valve housing 10 and a valve spring 30 that urges the valve body 20 toward the valve seat 12b. Part, that is, a portion connecting the negative pressure booster 100 and the negative pressure source 200 (for example, an intake manifold of an engine).

バルブハウジング１０は、第１ハウジング１１と第２ハウジング１２によって構成されていて、第１ハウジング１１の図示右端部には第２ハウジング１２の左端部が嵌合され気密的に接続（溶着）されている。第１ハウジング１１は、弁体２０の収容孔部１１ａと、弁体２０より負圧源側にあって収容孔部１１ａに連通する第１連通孔１１ｂと、第１連通孔１１ｂより負圧源側にあって第１連通孔１１ｂに連通する第２連通孔１１ｃを有している。第２ハウジング１２は、弁体２０より負圧式倍力装置側（装置側）にある連通孔１２ａと、連通孔１２ａの弁体側端部にあって弁体２０が着座・離座可能な環状の弁座１２ｂを有している。   The valve housing 10 is constituted by a first housing 11 and a second housing 12, and the left end portion of the second housing 12 is fitted and hermetically connected (welded) to the right end portion of the first housing 11 in the drawing. Yes. The first housing 11 includes a housing hole portion 11a of the valve body 20, a first communication hole 11b that is closer to the negative pressure source side than the valve body 20 and communicates with the housing hole portion 11a, and a negative pressure source from the first communication hole 11b. It has the 2nd communicating hole 11c which is in the side and communicates with the 1st communicating hole 11b. The second housing 12 has a communication hole 12a on the negative pressure type booster side (apparatus side) from the valve body 20, and an annular shape at the valve body side end of the communication hole 12a on which the valve body 20 can be seated and separated. It has a valve seat 12b.

このバルブハウジング１０において、第１ハウジング１１の収容孔部１１ａ、第１連通孔１１ｂ、第２連通孔１１ｃと、第２ハウジング１２の連通孔１２ａは、チェック弁Ｖ１の連通路Ｐ（図示省略）を構成していて、第１連通孔１１ｂが弁体２０より負圧源側の通路Ｐｂであり、連通孔１２ａが弁体２０より負圧式倍力装置側の通路Ｐａである。なお、収容孔部１１ａ、第１連通孔１１ｂ、第２連通孔１１ｃ、連通孔１２ａは、図１に示したように、各軸線Ｌ１，Ｌ２，Ｌ３に直交する断面が円形に形成されている。   In the valve housing 10, the housing hole 11a, the first communication hole 11b, the second communication hole 11c of the first housing 11, and the communication hole 12a of the second housing 12 are connected to the communication path P (not shown) of the check valve V1. The first communication hole 11b is a passage Pb on the negative pressure source side from the valve body 20, and the communication hole 12a is a passage Pa on the negative pressure booster side from the valve body 20. In addition, as shown in FIG. 1, the accommodation hole portion 11a, the first communication hole 11b, the second communication hole 11c, and the communication hole 12a have a circular cross section perpendicular to the respective axes L1, L2, and L3. .

弁体２０は、リテーナ２１と、シール部材２２によって構成されている。リテーナ２１は、収容孔部１１ａに収容される大径部２１ａと、連通孔１２ａに挿通される小径部２１ｂと、大径部２１ａと小径部２１ｂ間に形成された円柱状の頸部２１ｃを備えていて、大径部２１ａ、小径部２１ｂ、頸部２１ｃは、軸線Ｌ１に対して同軸的に配置されている。シール部材２２は、環状に形成されていて、頸部２１ｃに気密的かつ同軸的に組付けられており、弁座１２ｂに対して着座・離座可能である。なお、弁体２０の重心は弁体２０の軸心（Ｌ１）に略一致するように設定されている。   The valve body 20 includes a retainer 21 and a seal member 22. The retainer 21 includes a large-diameter portion 21a accommodated in the accommodating hole portion 11a, a small-diameter portion 21b inserted into the communication hole 12a, and a columnar neck portion 21c formed between the large-diameter portion 21a and the small-diameter portion 21b. The large-diameter portion 21a, the small-diameter portion 21b, and the neck portion 21c are provided coaxially with respect to the axis L1. The seal member 22 is formed in an annular shape, and is hermetically and coaxially assembled to the neck portion 21c. The seal member 22 can be seated and separated from the valve seat 12b. The center of gravity of the valve body 20 is set so as to substantially coincide with the axis (L1) of the valve body 20.

バルブスプリング３０は、円錐台形状に形成されたコイルスプリングであり、大径端部にて第１ハウジング１１の段部１１ｄに係止され、小径端部にてリテーナ２１の段部に係止されている。このバルブスプリング３０は、軸線Ｌ１に対して同軸的に配置されていて、弁体２０に作用する付勢力が円周上にて略均一となるように設定されている。   The valve spring 30 is a coil spring formed in a truncated cone shape, and is locked to the step portion 11d of the first housing 11 at the large diameter end portion, and is locked to the step portion of the retainer 21 at the small diameter end portion. ing. The valve spring 30 is arranged coaxially with respect to the axis L1, and is set so that the urging force acting on the valve body 20 is substantially uniform on the circumference.

ところで、この第１実施形態では、弁体２０のシール部材２２が弁座１２ｂから離れる際に、弁座１２ｂに対して弁体２０を傾動させる片開き手段Ｘ１（図示省略）が設定されている。片開き手段Ｘ１は、バルブハウジング１０に設けた通路Ｐａ，Ｐｂに設定されていて、弁体２０より負圧式倍力装置側で弁体２０に対して同軸的な装置側の通路Ｐａに対して、弁体２０より負圧源側の通路Ｐｂが所定量Ａ偏心して配置されている。   By the way, in this 1st Embodiment, when the sealing member 22 of the valve body 20 leaves | separates from the valve seat 12b, the single opening means X1 (illustration omitted) which tilts the valve body 20 with respect to the valve seat 12b is set. . The single opening means X1 is set in passages Pa and Pb provided in the valve housing 10 and is connected to the passage Pa on the device side coaxial with the valve body 20 on the negative pressure booster side from the valve body 20. The passage Pb on the negative pressure source side from the valve body 20 is arranged eccentrically by a predetermined amount A.

したがって、この第１実施形態において、弁体２０がバルブスプリング３０の付勢力に抗して開くときには、図示下方にて図示上方に比して多量の空気が流れて、弁体２０が片開き状態にて開くこととなる。このため、弁体２０の閉止時には、弁体２０のシール部材２２が弁座１２ｂに片当り状態から着座することとなって、弁体２０の振動発生が抑制される。また、この第１実施形態では、バルブスプリング３０の付勢力を低減することなく実施することが可能であるため、当該チェック弁Ｖ１での気密性を良好に維持することが可能である。また、この第１実施形態では、弁体２０の弁座１２ｂに対する着座部（シール部材２２）に偏荷重が作用することがなくて、着座部での弁体の偏変形の発生を抑制することが可能である。   Therefore, in the first embodiment, when the valve body 20 opens against the urging force of the valve spring 30, a larger amount of air flows in the lower part of the drawing than in the upper part of the figure, so that the valve body 20 is in a single-open state. Will be opened. For this reason, when the valve body 20 is closed, the seal member 22 of the valve body 20 is seated on the valve seat 12b from the one-sided state, and the occurrence of vibration of the valve body 20 is suppressed. Moreover, in this 1st Embodiment, since it can implement without reducing the urging | biasing force of the valve spring 30, it is possible to maintain the airtightness in the said check valve V1 favorably. Moreover, in this 1st Embodiment, a biased load does not act on the seating part (seal member 22) with respect to the valve seat 12b of the valve body 20, and generation | occurrence | production of the deformation | transformation of the valve body in a seating part is suppressed. Is possible.

図２は、本発明による負圧式倍力装置用チェック弁の第２実施形態を示していて、この第２実施形態の負圧式倍力装置用チェック弁Ｖ２は、上記した第１実施形態のチェック弁Ｖ１と同様に、バルブハウジング１０、弁体２０およびバルブスプリング３０を備えている。なお、図２に示した第２実施形態では、弁体２０より負圧源側の通路Ｐｂの構成を除いて、上記した第１実施形態の各構成と同じ構成が採用されているため、同一符号を付してその説明は省略する。   FIG. 2 shows a second embodiment of the check valve for a negative pressure booster according to the present invention. The check valve V2 for the negative pressure booster according to the second embodiment is the check of the first embodiment described above. Similar to the valve V1, a valve housing 10, a valve body 20, and a valve spring 30 are provided. In the second embodiment shown in FIG. 2, except for the configuration of the passage Pb on the negative pressure source side from the valve body 20, the same configuration as each configuration of the first embodiment described above is adopted, and therefore the same. Reference numerals are assigned and explanations thereof are omitted.

ところで、この第２実施形態では、弁体２０のシール部材２２が弁座１２ｂから離れる際に、弁座１２ｂに対して弁体２０を傾動させる片開き手段Ｘ２（図示省略）が設定されている。片開き手段Ｘ２は、バルブハウジング１０に設けた通路Ｐａ，Ｐｂに設定されていて、弁体２０より負圧式倍力装置側で弁体２０に対して同軸的な装置側の通路Ｐａに対して、弁体２０より負圧源側の通路Ｐｂが所定量θ傾斜して配置されている。したがって、この第２実施形態においても、上記した第１実施形態と同様の作用効果が得られる。なお、この第２実施形態においては、開弁時に弁体２０の図示下方にて図示上方に比して速い流速が生じて、弁体２０が片開き状態にて開くこととなる。   By the way, in this 2nd Embodiment, when the sealing member 22 of the valve body 20 leaves | separates from the valve seat 12b, the single opening means X2 (illustration omitted) which tilts the valve body 20 with respect to the valve seat 12b is set. . The single opening means X2 is set in the passages Pa and Pb provided in the valve housing 10, and is connected to the passage Pa on the device side coaxial with the valve body 20 on the negative pressure booster side from the valve body 20. The passage Pb on the negative pressure source side with respect to the valve body 20 is disposed so as to be inclined by a predetermined amount θ. Therefore, also in the second embodiment, the same effect as the first embodiment described above can be obtained. In the second embodiment, when the valve is opened, a faster flow velocity is generated in the lower part of the valve body 20 than in the upper part of the figure, and the valve body 20 is opened in a single-open state.

図３は、本発明による負圧式倍力装置用チェック弁の第３実施形態を示していて、この第３実施形態の負圧式倍力装置用チェック弁Ｖ３は、上記した第１実施形態のチェック弁Ｖ１と同様に、バルブハウジング１０、弁体２０およびバルブスプリング３０を備えている。なお、図３に示した第３実施形態では、弁体２０より負圧源側の通路Ｐｂの構成と、バルブスプリング３０の構成を除いて、上記した第１実施形態の各構成と同じ構成が採用されているため、同一符号を付してその説明は省略する。   FIG. 3 shows a third embodiment of the check valve for a negative pressure booster according to the present invention. The check valve V3 for the negative pressure booster according to the third embodiment is the check of the first embodiment described above. Similar to the valve V1, a valve housing 10, a valve body 20, and a valve spring 30 are provided. In the third embodiment shown in FIG. 3, except for the configuration of the passage Pb on the negative pressure source side from the valve body 20 and the configuration of the valve spring 30, the same configurations as those of the first embodiment described above are used. Since it is adopted, the same reference numerals are given and description thereof is omitted.

ところで、この第３実施形態では、弁体２０のシール部材２２が弁座１２ｂから離れる際に、弁座１２ｂに対して弁体２０を傾動させる片開き手段Ｘ３（図示省略）がバルブスプリング３０に設定されていて、バルブスプリング３０の弁体２０に対する付勢力が円周上の一箇所にて他の箇所に比して高く設定されている。なお、この第３実施形態では、弁体２０より負圧式倍力装置側で弁体２０に対して同軸的な装置側の通路Ｐａに対して、弁体２０より負圧源側の通路Ｐｂが同軸的に配置されている。   By the way, in this 3rd Embodiment, when the sealing member 22 of the valve body 20 leaves | separates from the valve seat 12b, the single opening means X3 (illustration omitted) which tilts the valve body 20 with respect to the valve seat 12b is set to the valve spring 30. The biasing force of the valve spring 30 against the valve body 20 is set higher at one place on the circumference than at the other places. In the third embodiment, a passage Pb on the negative pressure source side from the valve body 20 is provided with respect to the passage Pa on the apparatus side coaxial with the valve body 20 on the negative pressure booster side from the valve body 20. It is arranged coaxially.

したがって、この第３実施形態において、弁体２０がバルブスプリング３０の付勢力に抗して開くときには、バルブスプリング３０の付勢力が低く設定されている部位から開き始めて、片開き状態にて開くこととなる。このため、弁体２０の閉止時には、弁体２０のシール部材２２が弁座１２ｂに片当り状態から着座することとなって、弁体２０の振動発生が抑制される。なお、この第３実施形態においては、バルブハウジング１０において、通路Ｐａに対して通路Ｐｂが同軸的に配置されているため、上記した第１実施形態および第２実施形態に比して、バルブハウジング１０の構成をシンプルとしてバルブハウジング１０を安価とすることが可能である。   Therefore, in the third embodiment, when the valve body 20 opens against the urging force of the valve spring 30, it starts to open from a portion where the urging force of the valve spring 30 is set low and opens in a single-open state. It becomes. For this reason, when the valve body 20 is closed, the seal member 22 of the valve body 20 is seated on the valve seat 12b from the one-sided state, and the occurrence of vibration of the valve body 20 is suppressed. In the third embodiment, since the passage Pb is coaxially disposed with respect to the passage Pa in the valve housing 10, the valve housing is compared with the first embodiment and the second embodiment described above. The valve housing 10 can be made inexpensive by simplifying the configuration of the valve 10.

上記した第３実施形態においては、弁体２０のシール部材２２が弁座１２ｂから離れる際に、弁座１２ｂに対して弁体２０を傾動させる片開き手段Ｘ３がバルブスプリング３０に設定されているが、片開き手段Ｘ３と同様に機能する片開き手段Ｘ４（図示省略）が弁体２０に設定されていることも可能である。片開き手段Ｘ４では、弁体２０の重心が弁体２０の軸心に対して所定量偏心して設定されている。このため、この第４実施形態においても、上記した第３実施形態と同様の作用効果が得られる。   In the above-described third embodiment, when the seal member 22 of the valve body 20 moves away from the valve seat 12b, the single opening means X3 for tilting the valve body 20 with respect to the valve seat 12b is set in the valve spring 30. However, it is also possible for the valve body 20 to be provided with a single opening means X4 (not shown) that functions in the same manner as the single opening means X3. In the single opening means X4, the center of gravity of the valve body 20 is set to be decentered by a predetermined amount with respect to the axis of the valve body 20. For this reason, also in this 4th Embodiment, the same operation effect as above-mentioned 3rd Embodiment is acquired.

上記した各実施形態では、負圧式倍力装置１００の負圧導入部位（負圧式倍力装置１００において負圧室を形成するフロントハウジング）に気密的に組付けられるタイプの負圧式倍力装置用チェック弁に、本発明を実施したが、本発明は、負圧式倍力装置１００の負圧導入部位と負圧源２００を接続するホース中に介装されるタイプの負圧式倍力装置用チェック弁にも、上記実施形態と同様に、または、適宜変更して、実施することが可能である。   In each of the above-described embodiments, for a negative pressure booster of the type that is hermetically assembled to a negative pressure introduction portion of the negative pressure booster 100 (a front housing that forms a negative pressure chamber in the negative pressure booster 100). Although the present invention has been implemented in the check valve, the present invention is a check for a negative pressure booster of the type that is interposed in a hose connecting the negative pressure introduction part of the negative pressure booster 100 and the negative pressure source 200. The valve can also be implemented in the same manner as in the above embodiment or with appropriate modifications.

１０…バルブハウジング、１２ａ（Ｐａ）…負圧式倍力装置側の通路、１１ｂ（Ｐｂ）…負圧源側の通路、１２ｂ…弁座、２０…弁体、２１…リテーナ、２２…シール部材、３０…バルブスプリング、Ｖ１、Ｖ２，Ｖ３…負圧式倍力装置用チェック弁、１００…負圧式倍力装置、２００…負圧源（エンジンの吸気マニホールド） DESCRIPTION OF SYMBOLS 10 ... Valve housing, 12a (Pa) ... Negative pressure type booster side passage, 11b (Pb) ... Negative pressure source side passage, 12b ... Valve seat, 20 ... Valve body, 21 ... Retainer, 22 ... Seal member, 30 ... Valve spring, V1, V2, V3 ... Negative pressure type booster check valve, 100 ... Negative pressure type booster, 200 ... Negative pressure source (engine intake manifold)

Claims (6)

通路と弁座を有するバルブハウジングと、このバルブハウジング内に組み込まれる弁体およびこの弁体を前記弁座に向けて付勢するバルブスプリングを備えていて、負圧式倍力装置の負圧導入部に設けられる負圧式倍力装置用チェック弁において、
前記弁体が前記弁座から離れる際に、前記弁座に対して前記弁体を傾動させる片開き手段が設定されている負圧式倍力装置用チェック弁。 A valve housing having a passage and a valve seat, a valve body incorporated in the valve housing, a valve spring for biasing the valve body toward the valve seat, and a negative pressure introducing portion of a negative pressure booster In the check valve for negative pressure type booster provided in
A check valve for a negative pressure type booster in which a single opening means for tilting the valve body with respect to the valve seat when the valve body leaves the valve seat is set. 請求項１に記載の負圧式倍力装置用チェック弁において、
前記片開き手段は、前記バルブハウジングの前記通路に設定されていることを特徴とする負圧式倍力装置用チェック弁。 In the check valve for a negative pressure type booster according to claim 1,
The check valve for a negative pressure type booster, wherein the one-side opening means is set in the passage of the valve housing. 請求項２に記載の負圧式倍力装置用チェック弁において、
前記バルブハウジングに設けた前記弁体より前記負圧式倍力装置側で前記弁体に対して同軸的な前記負圧式倍力装置側の通路に対して、前記弁体より負圧源側の通路が所定量偏心して配置されていることを特徴とする負圧式倍力装置用チェック弁。 In the check valve for a negative pressure type booster according to claim 2,
A passage closer to the negative pressure source than the valve body with respect to a passage on the negative pressure booster side coaxial with the valve body on the negative pressure booster side than the valve body provided in the valve housing Is a check valve for a negative pressure type booster, characterized by being arranged eccentrically by a predetermined amount. 請求項２に記載の負圧式倍力装置用チェック弁において、
前記バルブハウジングに設けた前記弁体より前記負圧式倍力装置側で前記弁体に対して同軸的な前記負圧式倍力装置側の通路に対して、前記弁体より負圧源側の通路が所定量傾斜して配置されていることを特徴とする負圧式倍力装置用チェック弁。 In the check valve for a negative pressure type booster according to claim 2,
A passage closer to the negative pressure source than the valve body with respect to a passage on the negative pressure booster side coaxial with the valve body on the negative pressure booster side than the valve body provided in the valve housing Is a check valve for a negative pressure type booster, characterized by being inclined at a predetermined amount. 請求項１に記載の負圧式倍力装置用チェック弁において、
前記片開き手段は、前記バルブスプリングに設定されていて、前記バルブスプリングの前記弁体に対する付勢力が円周上の一箇所にて他の箇所に比して高く設定されていることを特徴とする負圧式倍力装置用チェック弁。 In the check valve for a negative pressure type booster according to claim 1,
The one-side opening means is set on the valve spring, and the biasing force of the valve spring against the valve body is set higher at one place on the circumference than at other places. Check valve for negative pressure booster. 請求項１に記載の負圧式倍力装置用チェック弁において、
前記片開き手段は、前記弁体に設定されていて、前記弁体の重心が前記弁体の軸心に対して所定量偏心して設定されていることを特徴とする負圧式倍力装置用チェック弁。 In the check valve for a negative pressure type booster according to claim 1,
The check for negative pressure type booster is characterized in that the one-side opening means is set in the valve body, and the center of gravity of the valve body is set eccentrically by a predetermined amount with respect to the axial center of the valve body. valve.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106195426A (en) * 2016-09-21 2016-12-07 宁波乔士橡塑有限公司 A kind of Novel vacuum check valve
WO2018021283A1 (en) * 2016-07-25 2018-02-01 株式会社アドヴィックス Vacuum booster check valve
CN109477589A (en) * 2016-07-25 2019-03-15 株式会社爱德克斯 Suction type power assisting device check-valves
CN111201168A (en) * 2017-10-25 2020-05-26 株式会社爱德克斯 Negative pressure type booster

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JPS60184466U (en) * 1984-05-17 1985-12-06 株式会社ナブコ Coupling device for negative pressure actuated device
US4643221A (en) * 1985-08-30 1987-02-17 General Motors Corporation Vacuum check valve
US4628959A (en) * 1985-08-30 1986-12-16 General Motors Corporation Vacuum check valve
JPS62161074U (en) * 1986-03-31 1987-10-13
DE3732077A1 (en) * 1987-09-24 1989-04-06 Wabco Westinghouse Fahrzeug CHECK VALVE, ESPECIALLY FOR COMPRESSED AIR
JP2003021100A (en) * 2001-07-06 2003-01-24 Tokico Ltd Ejector and negative pressure supply device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018021283A1 (en) * 2016-07-25 2018-02-01 株式会社アドヴィックス Vacuum booster check valve
CN109477589A (en) * 2016-07-25 2019-03-15 株式会社爱德克斯 Suction type power assisting device check-valves
CN109477589B (en) * 2016-07-25 2020-02-18 株式会社爱德克斯 Check valve for negative pressure type power assisting device
CN106195426A (en) * 2016-09-21 2016-12-07 宁波乔士橡塑有限公司 A kind of Novel vacuum check valve
CN111201168A (en) * 2017-10-25 2020-05-26 株式会社爱德克斯 Negative pressure type booster

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