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WO2018021283A1 - Clapet anti-retour de surpression - Google Patents

Clapet anti-retour de surpression Download PDF

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Publication number
WO2018021283A1
WO2018021283A1 PCT/JP2017/026818 JP2017026818W WO2018021283A1 WO 2018021283 A1 WO2018021283 A1 WO 2018021283A1 JP 2017026818 W JP2017026818 W JP 2017026818W WO 2018021283 A1 WO2018021283 A1 WO 2018021283A1
Authority
WO
WIPO (PCT)
Prior art keywords
negative pressure
valve body
valve
valve seat
disk
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.)
Ceased
Application number
PCT/JP2017/026818
Other languages
English (en)
Japanese (ja)
Inventor
健太 石川
匡希 荒川
鈴木　公康
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.)
Advics Co Ltd
Original Assignee
Advics Co Ltd
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
Priority claimed from JP2016213870A external-priority patent/JP2018020755A/ja
Application filed by Advics Co Ltd filed Critical Advics Co Ltd
Priority to CN201780045696.1A priority Critical patent/CN109477589B/zh
Priority to US16/318,570 priority patent/US20190219185A1/en
Publication of WO2018021283A1 publication Critical patent/WO2018021283A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members

Definitions

  • the present invention relates to a check valve for a negative pressure type booster provided between a negative pressure type booster and a negative pressure source.
  • negative pressure boosters with check valves disclosed in Patent Document 1 and Patent Document 2 below are known.
  • the check valve assembled in these conventional negative pressure boosters has a negative pressure outlet hole (negative pressure outlet port) and a valve seat formed in the negative pressure outlet hole (negative pressure outlet port) in the housing body.
  • the valve body cooperating with the valve seat and a valve spring for seating the valve body on the valve seat are accommodated.
  • the coil pitch of the valve spring is varied. The resonance of the valve spring and the valve body is suppressed.
  • the check valve provided between the negative pressure source and the negative pressure booster is an intermittent intake action of the negative pressure source in a state where the valve body is not completely separated from the valve seat or in a seated state. Due to (negative pressure pulsation), the entire valve body may vibrate, and the valve body may be repeatedly seated and separated from the valve seat. In this way, in the state where the entire valve body vibrates and the entire valve body repeats seating and separation from the valve seat, the valve body and the valve seat come into contact with each other. ) May occur.
  • an object of the present invention is to provide a check valve for a negative pressure type booster that suppresses the generation of the check valve vibration and abnormal noise (contact noise) caused by negative pressure pulsation.
  • the invention of the check valve for a negative pressure booster comprises a negative pressure booster having a negative pressure inlet connected to a negative pressure source, a negative pressure source, The negative pressure doubler that allows air communication from the negative pressure inlet to the negative pressure source, while blocking air communication from the negative pressure source to the negative pressure inlet.
  • a main body provided to be connected to the negative pressure introduction port, a passage formed in the main body for communicating the negative pressure introduction port and the negative pressure source, and a valve formed in the passage
  • a cylindrical base portion that is housed in the passage and is seated or separated from the valve seat and extends toward the passage in the axial direction of the passage, a disk portion extending in the radial direction of the base portion, and
  • a valve body configured to include an annular protrusion protruding from the outer peripheral end of the disk portion toward the valve seat, and the protrusion received in contact with the valve seat.
  • a biasing member that biases the valve body toward the valve seat, and a vibration absorbing portion that absorbs more vibration applied to the valve body when the valve body is seated on the valve seat. Configured.
  • the vibration absorber absorbs more vibration caused by the negative pressure pulsation. can do. Thereby, it can suppress that the whole valve body vibrates. Therefore, when the valve body vibrates due to negative pressure pulsation, even if the valve body repeats seating and separation with respect to the valve seat, the entire vibration of the valve body is suppressed. An abnormal sound (contact sound) generated by contacting the seat can be reduced.
  • FIG. 1 is a schematic overall view of a negative pressure booster with a check valve assembled to each embodiment of a check valve for a negative pressure booster according to the present invention.
  • 1 is a cross-sectional view schematically showing a configuration of a check valve according to a first embodiment of a check valve for a negative pressure booster according to the present invention. It is a figure for demonstrating the formation part of the groove part (vibration absorption part) which comprises the non-return valve of FIG.
  • FIG. 3B is a cross-sectional view for explaining the cross-sectional shape of the groove in the 3b-3b cross section of FIG. 3a.
  • FIG. 5b is a cross-sectional view for explaining the cross-sectional shape of the groove in the 5b-5b cross section of FIG. 5a. It is sectional drawing for demonstrating the structure of a non-return valve concerning the 2nd modification of 1st embodiment. It is sectional drawing for demonstrating the cross-sectional shape of the groove part of FIG. 6a.
  • FIG. 7a is a cross-sectional view for explaining the cross-sectional shape of the groove. It is a figure for demonstrating the formation part of the groove part (vibration absorption part) which comprises a non-return valve in connection with the other modification of 1st embodiment. It is sectional drawing which concerns on 2nd embodiment of the check valve for negative pressure type boosters by this invention, and shows the structure of a check valve roughly. It is a figure for demonstrating the formation part of the thin part (vibration absorption part) which comprises the non-return valve of FIG. 9a.
  • FIG. 10a It is sectional drawing which concerns on the 1st modification of 2nd embodiment and shows the structure of a non-return valve roughly. It is a figure for demonstrating the formation part of the extension part (vibration absorption part) which comprises the non-return valve of FIG. 10a. It is sectional drawing which concerns on 3rd embodiment of the check valve for negative pressure type boosters by this invention, and shows the structure of a check valve roughly. It is a figure for demonstrating the shape of the valve body which comprises the non-return valve of FIG. It is sectional drawing for demonstrating a valve body side plane. It is sectional drawing for demonstrating the valve seat side plane concerning the 1st modification of 3rd embodiment. FIG.
  • FIG. 6 is a cross-sectional view schematically showing a configuration of a check valve according to a fourth embodiment of a check valve for a negative pressure booster according to the present invention. It is sectional drawing for demonstrating the structure of the grommet of FIG. It is a figure for demonstrating the formation part of the groove part (vibration absorption part) formed in the surrounding surface of FIG. 15a. It is a figure for demonstrating the formation part of the groove part (vibration absorption part) formed in the surrounding surface in connection with the 1st modification of 4th embodiment. It is sectional drawing for demonstrating the structure of a flange part concerning the other modification of 4th embodiment.
  • a check valve 10 for negative pressure type booster introduces negative pressure between the negative pressure source 1 and the negative pressure type booster 2. It is a valve mechanism arranged in a flow path connecting the port 3.
  • the check valve 10 permits air communication from the negative pressure booster 2 side to the negative pressure source 1 side, and blocks air communication from the negative pressure source 1 side to the negative pressure booster 2 side. Configured.
  • the check valve 10 of the first embodiment is connected on one side to a connecting pipe T connected to the negative pressure source 1 and on the other side to a negative pressure inlet 3 of the negative pressure booster 2.
  • the negative pressure source 1 is, for example, an engine manifold or the like, and generates negative pressure.
  • the negative pressure booster 2 includes a hollow cylindrical shell 4. The inside of the shell 4 is partitioned into a negative pressure chamber 6 and a variable pressure chamber 7 by a partition wall 5.
  • the negative pressure chamber 6 is provided with a negative pressure inlet 3. As shown in FIG. 2, the negative pressure inlet 3 is formed on the wall surface of the shell 4 that forms the negative pressure chamber 6, and communicates the inside and the outside of the negative pressure chamber 6.
  • a booster piston 8 is connected to the partition wall 5.
  • One end of the input rod 9 is connected to the booster piston 8 via a control valve (not shown).
  • a brake pedal P is connected to the other end side of the input rod 9.
  • the input rod 9 moves backward together with the brake pedal P when the brake pedal P is not depressed.
  • the control valve controls the variable pressure chamber 7 and the negative pressure chamber 6 to have the same pressure, so that the booster piston 8 also returns to the retracted position.
  • the control valve introduces atmospheric pressure into the variable pressure chamber 7 by the switching operation, and the booster piston 8 is attached in the forward direction due to the pressure difference (negative pressure difference) between the variable pressure chamber 7 and the negative pressure chamber 6. Be forced.
  • variable pressure chamber 7 When atmospheric pressure is introduced into the variable pressure chamber 7 and the booster piston 8 moves forward, a part of the air introduced into the variable pressure chamber 7 flows into the negative pressure chamber 6, and the inflowed air passes through the check valve 10 and the connecting pipe T. Flows toward the negative pressure source 1. That is, the check valve 10 is opened to allow air communication from the negative pressure chamber 6 to the connecting pipe T, so that the air in the negative pressure chamber 6 flows toward the negative pressure source 1. Thereby, the air in the negative pressure chamber 6 is sucked by the negative pressure source 1, and the pressure in the negative pressure chamber 6 is set to a pressure (negative pressure) equivalent to that of the negative pressure source 1.
  • the check valve 10 is closed and air is communicated from the connection pipe T to the negative pressure chamber 6. Therefore, the pressure (negative pressure) in the negative pressure chamber 6 is maintained.
  • the check valve 10 of the first embodiment is airtightly assembled through a grommet G with respect to the negative pressure inlet 3 formed in the shell 4.
  • the check valve 10 includes a main body 11, a valve seat 12, a valve body 13, a retainer 14, and a spring 15.
  • the main body 11 includes a first main body portion 111 and a second main body portion 112.
  • the 1st main-body part 111 is formed in the cylinder shape, and has the protrusion part 111a, the flange part 111b, and the 1st channel
  • the protrusion 111a is connected to the second main body 112.
  • the flange portion 111 b comes into contact with the second main body portion 112.
  • the first passage 111c communicates the inside and the outside of the negative pressure chamber 6.
  • the second body portion 112 is formed in a cylindrical shape, and has a large-diameter housing portion 112a, a second passage 112b communicating with the housing portion 112a, and a fitting portion formed at the opening side end of the housing portion 112a. 112c.
  • the second main body portion 112 is integrally fixed to the first main body portion 111 in a state of being airtightly fitted to the outer peripheral side of the protruding portion 111a of the first main body portion 111 on the inner surface side of the fitting portion 112c.
  • the accommodating portion 112 a accommodates the valve seat 12, the valve body 13, the retainer 14, and the spring 15.
  • the second passage 112 b communicates with the connection pipe T connected to the negative pressure source 1.
  • the valve seat 12 is formed on the distal end surface of the protruding portion 111a of the first main body 111 accommodated in the accommodating portion 112a of the second main body 112.
  • the tip surface of the protrusion 111a has a dihedral angle of zero with a plane orthogonal to the axis L of the first passage 111c of the first main body 111 (hereinafter, this plane is referred to as a “reference plane”). It has become. That is, the front end surface of the protrusion 111a is orthogonal to the axis L of the first passage 111c.
  • the valve body 13 includes a base part 131, a disk part 132, and a protrusion 133.
  • the base 131, the disk part 132, and the protrusion 133 are integrally formed of a rubber material that is an elastic member.
  • the rubber material forming the base part 131, the disk part 132, and the protrusion 133 is preferably a rubber material having high rigidity.
  • the valve body 13 is seated on the valve seat 12, the situation where air flows from the negative pressure source 1 toward the negative pressure chamber 6, that is, the pressure in the second passage 112b is in the first passage 111c. It is preferable to select a rubber material having such a rigidity that the valve body 13 is not deformed and displaced into the first passage 111c in a situation where the pressure is higher than the pressure.
  • the base 131 is formed in a solid cylindrical shape so as to extend in the direction of the axis L of the first passage 111 c, and the distal end side enters the first passage 111 c of the first main body 111. .
  • the disc part 132 is formed on the base end side of the base part 131 so as to extend in the radial direction of the base part 131.
  • the protrusion 133 is formed in an annular shape at the outer peripheral end of the disk portion 132.
  • the protrusion 133 is formed so as to protrude opposite the valve seat 12 in the state of being accommodated in the second main body 112, and in the seating state in which the valve body 13 is seated on the valve seat 12, 12 is contacted. And the protrusion 133 forms a contact surface between the valve seat 12 in the seating state of the valve body 13, and seals it airtightly.
  • first valve body side plane When the valve body 13 is seated on the valve seat 12, the projection 133 is a contact portion that forms a circumferential contact surface that contacts the valve seat 12, and is a contact portion before the seating (that is, the projection).
  • first valve body side plane The dihedral angle between the plane including the front end portion of the portion 133 (hereinafter, this plane is referred to as “first valve body side plane”) and the reference plane is zero. That is, the first valve body side plane and the reference plane are parallel (coincident). For this reason, the first valve body side plane is orthogonal to the axis L of the first passage 111c.
  • the distal end surface of the protruding portion 111a of the first main body 111 where the valve seat 12 is formed is orthogonal to the axis L of the first passage 111c. That is, when the valve body 13 is seated on the valve seat 12, the valve seat 12 is a contact portion that forms a circumferential contact surface that contacts the protrusion 133 of the valve body 13, and before the valve body 13 is seated.
  • the dihedral angle between the plane including the contact portion (that is, the circumferential portion formed on the surface of the valve seat 12) (hereinafter, this plane is referred to as the “first valve seat side plane”) and the reference plane is It is assumed to be zero. Therefore, the first valve seat side plane and the reference plane are parallel (or coincident), and the first valve seat side plane is orthogonal to the axis L of the first passage 111c.
  • the first valve body side plane and the reference plane are parallel, and the first valve seat side plane and the reference plane are parallel.
  • the side plane is parallel with no inclination. That is, in this case, when the protrusion 133 of the valve body 13 is seated on the valve seat 12, the contact portion of the protrusion 133 is seated in parallel with the contact portion of the valve seat 12.
  • the retainer 14 is disposed so as to contact the disc portion 132 of the valve body 13.
  • the retainer 14 includes a spring seat 141 having a smaller diameter than the outer diameter of the disk portion 132.
  • the retainer 14 includes a plurality of columnar legs 142 on the surface of the spring seat 141 that faces the second passage 112b.
  • the leg 142 is opened by the valve body 13 that is opened.
  • the two passages 112b are provided so as not to be blocked.
  • the leg portion 142 is formed of an elastic member (for example, a rubber material) in order to prevent noise generated when the valve body 13 is opened and contacts the inner surface of the second main body portion 112.
  • the spring 15 as the biasing member is a coil spring formed in a conical shape.
  • the large-diameter side end of the spring 15 is in contact with the inner surface of the second main body 112, and the small-diameter side end of the spring 15 is seated on the spring seat 141 of the retainer 14.
  • the spring 15 urges and presses the valve body 13 and the retainer 14 in the direction of the axis L of the first passage 111c. Therefore, when the valve body 13 is seated on the valve seat 12, the protrusion 133 of the valve body 13 is pressed against the contact surface of the valve seat 12 with an equal pressing force in the circumferential direction by the urging force of the spring 15. Pressed.
  • the check valve 10 includes a vibration absorbing portion 16 formed in a part of the disc portion 132 of the valve body 13.
  • the vibration absorption part 16 is formed in a part of the valve body 13 and absorbs more vibration than the other part of the valve body 13 to suppress the vibration of the entire valve body 13.
  • the vibration absorbing portion 16 of the first embodiment is formed including a groove portion 161 formed along the circumferential direction at the outer peripheral end portion of the disc portion 132.
  • the groove 161 is formed in a part of the disk part 132, specifically, in a part in the circumferential direction in the vicinity of the outer peripheral end part. As shown in FIGS. 2 and 3b, the groove 161 is formed so as to open toward the spring 15 and has a V-shaped cross section.
  • the rigidity of the part where the groove part 161 is formed hereinafter referred to as “a part of the disk part 132”
  • the groove part 161 are formed in the disk part 132 in which the groove part 161 is formed in the vicinity of the outer peripheral end part.
  • the rigidity of the part that is not formed hereinafter referred to as “the other part of the disk part 132”) is different.
  • the rigidity of a part of the disk part 132 is smaller (softer) than the rigidity of the other part of the disk part 132.
  • two groove portions 161 are formed.
  • the number of groove portions 161 to be formed is not limited to this, and it is needless to say that the number can be increased or decreased as necessary. Yes.
  • a part of the disk part 132 is a disk part. It oscillates ahead of other parts of 132. Thus, a part of the disk part 132 vibrates ahead of the other part of the disk part 132, so that vibration energy given from the air to the valve body 13 (disk part 132) can be consumed. Therefore, it can suppress that the valve body 13 (disk part 132) whole vibrates.
  • the valve body 13 when the valve body 13 is separated from the valve seat 12 immediately after the start of the depression of the brake pedal P, the valve body 13 is displaced toward the second passage 112b against the urging force (pressing force) of the spring 15. As a result, the leg portion 142 of the retainer 14 contacts the inner surface of the second main body portion 112. In contrast to such contact, the leg portion 142 is formed using a rubber material. Therefore, even if the leg portion 142 and the inner surface of the second main body portion 112 are in contact with each other, the impact due to the contact is achieved. Is alleviated and the generation of abnormal noise and the like is suppressed.
  • the negative pressure source 1 is supplied from the negative pressure chamber 6 via the negative pressure inlet 3 as shown in FIG. Air is flowing toward The magnitude of the pressure acting on the valve body 13 from the flowing air and the magnitude of the urging force acting on the valve body 13 from the spring depending on the air suction cycle by the negative pressure source 1 (for example, the manifold of the engine). May be out of balance.
  • the valve body 13 and the spring 15 may vibrate (resonate), and for example, the leg portion 142 of the retainer 14 may come into contact with the inner surface of the second main body portion 112.
  • the leg portion 142 is formed using a rubber material, even if the leg portion 142 and the inner surface of the second main body portion 112 contact, The impact is alleviated and the generation of abnormal noise or the like is suppressed.
  • the negative pressure source 1 continues to inhale the air present in the second passage 112b.
  • negative pressure pulsation for example, air resonance
  • the negative pressure pulsation thus generated acts to excite vibrations on the valve body 13 in the seated state.
  • the valve body 13 has a vibration absorbing portion 16 formed in a part of the disk portion 132.
  • the vibration absorbing portion 16 includes a groove portion 161 formed in a part of the disc portion 132.
  • the vibration absorbing portion 16 including a part of the disk part 132 with low rigidity starts to vibrate before the other part of the disk part 132.
  • the vibration energy that vibrates the entire valve body 13 given from the air by the negative pressure pulsation is consumed by the vibration absorbing portion 16 starting the vibration in advance.
  • the vibration absorbing portion 16 since the vibration absorbing portion 16 has low rigidity, even if the protrusion 133 adjacent to the vibration absorbing portion 16 repeats separation and seating with respect to the valve seat 12 due to vibration of the vibration absorbing portion 16, The impact load applied to the valve seat 12 by the protrusion 133 during seating is reduced. As a result, it is possible to prevent a large impact load from being applied to the valve seat 12 due to the vibration of the protrusion 133 adjacent to the other part of the highly rigid disk part 132, and this is indicated by the solid line in FIG. Thus, the magnitude of the contact sound can be suppressed.
  • the vibration absorbing part 16 vibrates, the impact load is small, so that the generated contact noise is small.
  • the waveform indicated by the alternate long and short dash line represents the magnitude (amplitude) of the contact sound in the check valve not provided with the vibration absorbing portion 16.
  • the vibration of the valve body 13 may propagate to the spring 15 and the spring 15 may bend.
  • the vibration of the valve body 13 and the vibration of the spring 15 resonate, and the protrusion 133 of the valve body 13 may apply a large impact load to the valve seat 12.
  • the vibration absorbing portion 16 vibrates in advance, it is possible to suppress the vibration of the entire valve body 13, so that the bending of the spring 15 can be suppressed. That is, the vibration absorber 16 can also suppress the occurrence of vibration of the spring 15 (biasing member) due to negative pressure pulsation. Also by this, since the impact load which the valve body 13 gives to the valve seat 12 can be relieved, generation
  • the vibration absorbing portion 16 vibrates in advance.
  • the occurrence of vibrations in the entire valve body 13 can be suppressed. Therefore, the vibration of the whole valve body 13 and the spring 15 can be suppressed, and the generation of contact noise due to negative pressure pulsation can be suppressed.
  • valve body 13 may vibrate due to negative pressure pulsation even when the depression operation amount is small when the depression operation of the brake pedal P is started. Even with respect to such vibrations, the vibration absorbing portion 16 can suppress the vibration of the entire valve body 13, so that it is possible to suppress the generation of contact noise due to negative pressure pulsation.
  • the pressure on the negative pressure source 1 side may be larger than the pressure on the negative pressure chamber 6 side.
  • the valve body 13 is pressed by the pressure transmitted from the second passage 112b side in addition to the urging force of the spring 15. At the same time, it is sucked by the negative pressure of the negative pressure chamber 6 communicating with the first passage 111c.
  • the base 131 accommodated in the first passage 111 c tends to be displaced toward the negative pressure chamber 6.
  • the disk part 132 extending in the radial direction from the base part 131 is reduced in diameter due to the difference between the inner diameter of the valve seat 12 and the outer diameter of the disk part 132 as the base part 131 is displaced in the negative pressure chamber 6 direction.
  • the rubber material forming the disk part 132 flows in the direction of the groove part 161 and tries to close the opening of the groove part 161.
  • a part of the disk part 132 has a high rigidity by closing the opening of the groove part 161. Accordingly, the rigidity of the entire disk portion 132 is increased.
  • the rigidity of the disk part 132 increases, the resistance when the disk part 132 passes through the inner diameter of the valve seat 12 increases. This resistance restricts the valve body 13 from being displaced toward the negative pressure chamber 6, so that the valve body 13 can continue to be seated on the valve seat 12, and as a result, the sealing performance for sealing the negative pressure chamber 6 can be improved. It can be secured sufficiently.
  • a negative pressure type that permits air communication from the negative pressure inlet 3 toward the negative pressure source 1 while blocking air communication from the negative pressure source 1 toward the negative pressure inlet 3.
  • a main body 11 provided to connect the booster check valve 10 to the negative pressure inlet 3 and a first body formed in the main body 11 for communicating the negative pressure inlet 3 and the negative pressure source 1.
  • a cylindrical base 131 extending in the L direction toward the first passage 111c, and extending in the radial direction of the base 131
  • the disc body 132, the valve body 13 configured to include the annular projection 133 projecting from the outer peripheral end of the disc portion 132 toward the valve seat 12, and the projection 133 accommodated in the accommodation portion 112a.
  • a spring 15 that urges the valve body 13 toward the valve seat 12 so as to contact the valve seat 12, and the valve body 13 in a part of the valve body 13 in a seated state in which the valve body 13 is seated on the valve seat 12.
  • the vibration absorption part 16 which absorbs more the vibration added to the valve body 13 compared with the other part of the body 13 can be comprised.
  • the vibration absorbing portion 16 formed in the above can absorb more vibration due to the negative pressure pulsation than the other portion of the valve body 13 (specifically, the disc portion 132). Thereby, it can suppress that the whole valve body 13 vibrates. Therefore, when the valve body 13 vibrates due to the negative pressure pulsation, even if the valve body 13 repeats the seating and separation from the valve seat 12, the entire vibration of the valve body 13 is suppressed.
  • the contact sound generated when the valve body 13 (specifically the protrusion 133) contacts the valve seat 12 can be reduced.
  • the vibration transmitted from the valve body 13 to the spring 15 can be reduced by suppressing the vibration of the entire valve body 13 by the vibration absorbing portion 16.
  • the bending of the spring 15 can be made small and it can suppress that the valve body 13 and the spring 15 resonate. Therefore, since vibration of the valve body 13 due to resonance with the spring 15 can be suppressed, it is possible to reduce the contact sound generated when the valve body 13 (specifically, the protrusion 133) contacts the valve seat 12. it can.
  • the valve body 13 has at least the disk portion 132 and the protrusion 133 formed of an elastic material, and the vibration absorbing portion 16 is formed in a part of the disk portion 132 of the valve body 13.
  • the rigidity of a part of the disk part 132 can be configured to be smaller than the rigidity of the other part of the disk part 132 of the valve body 13.
  • a part of the disk part 132 is a groove part 161 formed in the disk part 132 so as to open toward the spring 15 in a circumferential direction that is one of the circumferential direction and the radial direction of the disk part 132. Can be included.
  • the rigidity of a part of the disk part 132 can be reduced. Therefore, the rigidity of a part of the disk part 132 can be reduced very easily, and the generation of contact noise can be suppressed.
  • the opening of the groove 161 is closed, so that the valve body 13 (specifically, the disk portion 132) is closed. Stiffness can be increased. Thereby, for example, it is not necessary to provide a backup ring or the like for restricting the displacement of the valve body 13 in the negative pressure introduction port 3 direction, and the manufacturing cost can be reduced.
  • the groove 161 is formed in a part of the circumferential direction at the outer peripheral end of the disk portion 132.
  • the radial direction which is one of the circumferential direction and the radial direction of the disk portion 132. It is also possible to form a groove 162 extending in the direction. Therefore, the vibration absorbing portion 16 in the first modification is formed including the groove portion 162 formed in the radial direction of the disk portion 132.
  • the groove portion 162 is formed in a radial direction at a part of the disk portion 132, specifically, at the outer peripheral end portion of the disk portion 132.
  • the groove 162 is formed so as to open to the spring 15 side, and has a V-shaped cross section as shown in an enlarged manner in FIG. 5b.
  • the rigidity of a part of the disk part 132 in which the groove part 162 is formed and the rigidity of the other part of the disk part 132 in which the groove part 162 is not formed are Different.
  • the rigidity of a part of the disk part 132 is smaller (softer) than the rigidity of the other part of the disk part 132.
  • the rigidity of a part of the disk portion 132 can be extremely easily reduced. And the generation of contact noise can be suppressed.
  • the opening of the groove 162 is closed, so that the valve body 13 (specifically, the disk portion 132) is closed. Stiffness can be increased. Thereby, for example, it is not necessary to provide a backup ring or the like for restricting the displacement of the valve body 13 in the negative pressure introduction port 3 direction, and the manufacturing cost can be reduced.
  • the cross-sectional shape of the groove 161 formed in the circumferential direction of the disk portion 132 is V-shaped.
  • the cross-sectional shape of the groove 162 formed in the radial direction of the disk portion 132 is V-shaped.
  • the cross-sectional shapes of the groove portions 161 and 162 formed in the circumferential direction and / or the radial direction with respect to the outer peripheral end portion of the disc portion 132 are shown in FIGS. 6a and 6b. It is also possible to make it U-shaped as shown in FIG. Also in this case, as in the first embodiment, the rigidity of a part of the disk part 132 can be reduced, and the rigidity of the entire disk part 132 can be increased by closing the opening.
  • FIGS. 7a and 7b the cross-sectional shape of the groove portions 161 and 162 formed in the circumferential direction and / or with respect to the outer peripheral end portion of the disk portion 132 is shown in FIGS. 7a and 7b. As shown, it may be rectangular. Also in this case, as in the first embodiment, the rigidity of a part of the disk part 132 can be reduced, and the rigidity of the entire disk part 132 can be increased by closing the opening.
  • the groove portion 161 is formed in a part of the circumferential direction in the vicinity of the outer peripheral end portion of the disk portion 132.
  • the disk portion 132 is formed on the entire circumference in the vicinity of the outer peripheral end portion of the disk portion 132.
  • the rigidity in the vicinity of the outer peripheral end which is a part of the disk part 132 is smaller than the rigidity of the other part of the disk part 132. Therefore, the same effect as the first embodiment can be obtained.
  • the check valve 10 is implemented to include the valve body 13 in which the base portion 131, the disk portion 132, and the protrusion 133 are integrally formed of a rubber material that is an elastic material.
  • the check valve 20 includes the valve body 23 in which the disk portion 132 and the protrusion 133 are integrally formed and the base portion 131 is integrally formed with the retainer 14. Different from the check valve 10.
  • the check valve 20 of the second embodiment is airtightly assembled through a grommet G with respect to the negative pressure inlet 3 formed in the shell 4.
  • the check valve 20 includes a main body 21, a valve seat 22, a valve body 23, and a spring 25.
  • the main body 21 includes a first main body portion 211 and a second main body portion 212.
  • the 1st main-body part 211 and the 2nd main-body part 212 respond
  • the protruding portion 211a, the flange portion 211b, and the first passage 211c of the first body portion 211 are connected to the protruding portion 111a, the flange portion 111b, and the first passage 111c of the first body portion 111 of the first embodiment.
  • the configuration is the same.
  • the accommodating portion 212a, the second passage 212b, and the fitting portion 212c of the second main body portion 212 correspond to the accommodating portion 112a, the second passage 112b, and the fitting portion 112c of the second main body portion 112 of the first embodiment.
  • the configuration is the same.
  • the valve seat 22 and the spring 25 correspond to the valve seat 12 and the spring 15 of the first embodiment and have the same configuration.
  • the valve body 23 includes a base 231, a disk part 232, and a protrusion 233.
  • the disk part 232 and the protrusion part 233 are integrally formed with the same elastic material, for example, the same rubber material.
  • the base 231 includes a large-diameter portion 231a accommodated in the accommodating portion 212a of the second main body portion 212, a small-diameter portion 231b inserted into the first passage 211c of the first main-body portion 211, a large-diameter portion 231a, and a small-diameter portion 231b. And a columnar neck portion 231c formed therebetween.
  • the large diameter portion 231a, the small diameter portion 231b, and the neck portion 231c are arranged coaxially with respect to the axis L of the first passage 211c.
  • the large-diameter portion 231a of the base portion 231 is formed with a spring seat 231d for seating the small-diameter side end portion of the spring 25 on the surface opposite to the surface connected to the neck portion 231c.
  • a plurality of 231e are provided.
  • the leg portion 231e is formed using a rubber material.
  • the disc portion 232 is a disc having a diameter larger than that of the first passage 211c of the first main body portion 211, and as shown in FIG. 9b, the penetrating through the neck portion 231c of the base portion 231 in an airtight manner at the center portion.
  • a hole 232a is formed.
  • the disk portion 232 is formed in an umbrella shape having the formation position of the through hole 232a as a vertex, and a protrusion 233 is integrally formed at the outer peripheral end portion.
  • the protrusion 233 is formed so as to protrude opposite to the valve seat 22 in the state of being accommodated in the second main body 212, and in the seating state where the valve body 23 is seated on the valve seat 22, the valve seat 22 is formed. To come into contact. And the protrusion 233 forms a contact surface between the valve seat 22 in the seating state of the valve body 23, and seals it airtightly.
  • the valve seat 22 is a contact portion that forms a circumferential contact surface that contacts the valve body 23 before the valve body 23 is seated.
  • the dihedral angle between the reference plane and the plane including the contact portion (that is, the circumferential portion formed on the surface of the valve seat 22) (hereinafter, this plane is referred to as the “second valve seat side plane”) is It is assumed to be zero. Therefore, the second valve seat side plane and the reference plane described above are parallel (or coincident) and orthogonal to the axis L of the first passage 211c.
  • the protrusion 233 forms a circumferential contact surface that contacts the valve seat 22, and is a contact portion before seating (ie The dihedral angle between the plane including the front end portion in the seating direction of the protrusion 233 (hereinafter, this plane is referred to as “second valve element side plane”) and the reference plane is zero.
  • the second valve element side plane and the reference plane are parallel (or coincident), and the second valve seat side plane and the second valve element side plane are parallel. . That is, in this case, when the protrusion 233 of the valve body 23 is seated on the valve seat 22, the contact portion of the protrusion 233 is seated in parallel with the contact portion of the valve seat 12.
  • the check valve 20 in the second embodiment includes a vibration absorbing portion 26 formed in a part of the disc portion 232 of the valve body 23.
  • the vibration absorbing unit 26 in the second embodiment is also given to the valve body 23 (disk unit 232) from the air by vibrating a part of the disk unit 232. The vibration energy generated is consumed to suppress the vibration of the entire valve body 23.
  • the vibration absorbing portion 26 of the second embodiment is configured to include a thin portion 261 formed so that the plate thickness decreases in the circumferential direction of the disc portion 232.
  • the thin portion 261 is a part of the disk portion 232, specifically, a part in the circumferential direction of the disk portion 232, radially outside the through-hole 232 a and from the protrusion 233. Is also formed radially inward. In this way, in the disk part 232 in which the thin part 261 is formed, the entire disk part 232 is formed of the same elastic material. Therefore, a portion where the thin part 261 is formed (hereinafter referred to as “the disk part 232”).
  • the rigidity of a portion (referred to as “part”) is different from the rigidity of a portion where the thin portion 261 is not formed (hereinafter referred to as “the other portion of the disk portion 232”). Specifically, the rigidity of a part of the disk part 232 is smaller (softer) than the rigidity of the other part of the disk part 232.
  • the check valve 20 of the second embodiment including the valve body 23 configured in this way is also the above-described “(1) immediately after the start of the depression operation on the brake pedal P”, “(2) the negative pressure chamber 6 and Operates in the same manner as “When the pressure difference (negative pressure difference) between the negative pressure source 1 is large” and “(3) When the pressure difference (negative pressure difference) between the negative pressure chamber 6 and the negative pressure source 1 is small”. To do. Note that “(1) Immediately after the start of the depression operation on the brake pedal P” and “(2) When the pressure difference (negative pressure difference) between the negative pressure chamber 6 and the negative pressure source 1 is large” are non-returnable.
  • the valve body 23 of the valve 20 operates in the same manner as the valve body 13 of the check valve 10.
  • valve element 13 is “valve element 23”
  • disc part 132 is “disc part 232”
  • projection part 133 is “projection part 233”
  • leg part 142 is “leg part”.
  • negative pressure source 1 continues to inhale the air existing in the second passage 212b.
  • negative pressure pulsation for example, air resonance
  • the negative pressure pulsation generated in this way acts to excite vibrations on the seated valve body 23.
  • the valve body 23 has a vibration absorbing portion 26 formed in a part of the disk portion 232.
  • the vibration absorbing portion 26 includes a thin portion 261 formed in a part of the disk portion 232.
  • the vibration absorbing part 26 including a part of the disk part 232 having low rigidity starts to vibrate before the other part of the disk part 232.
  • the vibration absorption part 26 starts a vibration in advance, the vibration energy which vibrates the whole valve body 23 given from air by a negative pressure pulsation is consumed.
  • the vibration absorbing portion 26 since the vibration absorbing portion 26 has low rigidity, even if the protrusion 233 close to the vibration absorbing portion 26 repeats separation and seating with respect to the valve seat 22 due to vibration of the vibration absorbing portion 26, The impact load applied to the valve seat 22 by the protrusion 233 during seating is reduced. As a result, it is possible to suppress a large impact load from being applied to the valve seat 22 due to the vibration of the protrusion 233 adjacent to the other part of the highly rigid disk portion 232, and this is indicated by a solid line in FIG. As described above, the contact noise can be suppressed.
  • the vibration absorbing portion 26 vibrates, the impact load is small, so that the generated contact noise is small.
  • the vibration of the valve body 23 may propagate to the spring 25 and the spring 25 may bend.
  • the vibration of the valve body 23 and the vibration of the spring 25 resonate, and the protrusion 233 of the valve body 23 may apply a large impact load to the valve seat 22.
  • the vibration absorbing portion 26 vibrates in advance, it is possible to suppress the vibration of the entire valve body 23, so that the bending of the spring 25 can be suppressed. That is, the vibration absorbing unit 26 can also suppress the occurrence of vibration of the spring 15 due to negative pressure pulsation. Also by this, since the impact load which the valve body 23 gives to the valve seat 22 can be relieved, generation
  • a part of the disk part 232 and the other part of the disk part 232 can be formed from the same rubber material.
  • the plate thickness can be made smaller than the plate thickness of the other part of the disk portion 232.
  • the rigidity of a part of the disc portion 232 can be reduced. Therefore, the rigidity of a part of the disk portion 232 can be reduced very easily, and the generation of contact noise can be suppressed.
  • the thin part 261 is formed in a part of the disk part 232.
  • the extension portion 262 in the disc portion 232 is also possible to form the extension portion 262 in the disc portion 232 as shown in FIGS. 10a and 10b. Therefore, the vibration absorbing portion 26 in the first modification is formed including the extending portion 262 of the disk portion 232.
  • the disk part 232 is formed to have a major axis and a minor axis, and the part extending in the major axis direction of the disk part 232 is an extension part 262.
  • the disc portion 232 is formed to have the same plate thickness in the entire disc portion 232. Even when the extending portion 262 is formed in the disk portion 232 as described above, as shown in FIG. 10 a, the outer peripheral end portion on the long diameter side of the disk portion 232 is the accommodating portion of the second main body portion 212. The inner peripheral surface of 212a is not contacted.
  • the vibration absorbing portion 26 is formed so that a part of the disc portion 232 includes the extending portion 262 formed in the major axis direction of the disc portion 232. Also, the rigidity of a part of the disk portion 232 can be reduced. Therefore, the rigidity of a part of the disk portion 232 can be reduced very easily, and the generation of contact noise can be suppressed.
  • the thin portion 261 is formed with respect to the disc portion 232, and the extending portion 262 is formed with respect to the disc portion 232 in the first modification.
  • the rigidity of a part of the disk part 232 is made smaller than the rigidity of the other part of the disk part 232, and the thin part 261 or the extension part 262 is formed.
  • the vibration absorbing portion 26 was formed so as to include
  • the disk part 232 is formed of two or more kinds of rubber materials having different rigidity, and a part of the disk part 232 made of a rubber material having low rigidity and a disk part made of a rubber material having high rigidity. It is also possible to form the other part of 232 in the disk part 232. Even in this case, by forming the vibration absorbing portion 26 so as to include a part of the disk portion 232, the vibration absorbing portion 26 can vibrate ahead of the other portions of the disk portion 232. Therefore, even when the disk portion 232 is formed from two or more types of rubber materials having different rigidity, the same effects as those in the second embodiment and the first modification can be obtained.
  • the first valve seat side plane and the first valve body side plane are parallel to each other, and the second valve seat side plane and The second valve element side planes are assumed to be parallel to each other.
  • the spring 15 presses the valve body 13 in a direction that coincides with the axis L of the first passage 111c, so that the protrusion 133 of the valve body 13 contacts the valve seat 12. When seated, the contact portion of the protrusion 133 comes close to and parallel to the contact portion of the valve seat 12.
  • the spring 25 presses the valve body 23 in a direction coinciding with the axis L of the first passage 211c, so that the protrusion 233 of the valve body 23 is against the valve seat 22.
  • the contact portion of the protrusion 233 is seated parallel to the contact portion of the valve seat 22.
  • first valve seat side plane and the first valve body side plane may be made parallel to each other, or the second valve seat side plane and the second valve body side plane being parallel to each other.
  • One plane of the seat side plane (second valve seat side plane) and the first valve body side plane (second valve body side plane) may be inclined with respect to the reference plane.
  • the third embodiment will be described in detail by exemplifying the second embodiment.
  • symbol is attached
  • the check valve 30 of the third embodiment is airtightly assembled through a grommet G with respect to the negative pressure inlet 3 formed in the shell 4.
  • the check valve 30 includes a valve body 33 as shown in FIGS. 11, 12a and 12b.
  • the valve body 33 includes a base 231 as in the valve body 23 of the second embodiment.
  • the disk portion 232 and the protrusions are provided.
  • a disc portion 332 and a protrusion 333 different from 233 are provided.
  • the disk part 332 and the protrusion part 333 are integrally formed of the same elastic material, for example, the same rubber material.
  • the disk portion 332 is a disk having a diameter larger than that of the first passage 211 c of the first main body portion 211, and penetrates the neck portion 231 c of the base portion 231 in an airtight manner at the center portion.
  • a hole 332a is formed.
  • the disk portion 332 is formed in an umbrella shape having the formation position of the through hole 332a as a vertex, and a protrusion 333 is integrally formed at the outer peripheral end portion.
  • the protrusion 333 is formed so as to protrude opposite the valve seat 22 in the state of being accommodated in the second main body 212, and in the seated state where the valve body 33 is seated on the valve seat 22, the valve seat 22 is formed. To come into contact.
  • the protrusion 333 forms a contact surface with the valve seat 22 in a seated state of the valve body 23 so as to be hermetically sealed.
  • the protrusion length which protrudes from the outer peripheral edge part of the disc part 332 is continuously different in the circumferential direction.
  • the protrusion 333 is a contact portion that forms a circumferential contact surface that contacts the valve seat 22 when the valve body 33 is seated on the valve seat 22.
  • a plane H including a contact portion before seating that is, a tip portion in the seating direction of the protrusion 333
  • this plane H is referred to as a “third valve body side plane H”
  • the dihedral angle with the reference plane B orthogonal to the axis L of 211c is not zero.
  • the third valve body side plane H and the reference plane B are not parallel.
  • the valve seat 22 has a third valve seat side plane I in the same manner as the second valve seat side plane in the second embodiment. Formed. That is, the third valve seat side plane I and the reference plane B are parallel (or coincident). Accordingly, the third valve body side plane H and the third valve seat side plane I are not parallel because the dihedral angle is not zero.
  • the spring 25 presses the valve body 33 by applying the same urging force in the circumferential direction in a direction coinciding with the axis L of the first passage 211c. For this reason, in the state where the contact portion of the protrusion 333 is in contact with the contact portion of the valve seat 22 (that is, the seating state of the valve body 33), the disk portion 332 and the protrusion 333 are pressed by the spring 25 in the circumferential direction. A difference occurs in the pressing force pressed against the valve seat 22.
  • the pressing force in the portion where the protrusion length of the protrusion 333 is long is relatively large, and the pressing force in the portion where the protrusion length is short is relatively small.
  • biasing force is given in the circumferential direction by the spring 25 in the direction which corresponds to the axis line L of the 1st channel
  • a difference in pressing force is generated in the circumferential direction of the valve body 33 that is pressed by the valve body, more specifically, the disk portion 332 and the protrusion 333.
  • the portion with a relatively small pressing force is easier to move in the direction of the axis L of the first passage 211c than the portion with a relatively large pressing force, and vibration caused by negative pressure pulsation. It is easy to produce.
  • the third valve body side plane H and the third valve seat side plane I are not parallel to the reference plane B, and the reference plane B and the third valve body side plane H are not parallel.
  • the reference plane B and the third valve seat side plane I are configured to be parallel, and the vibration absorbing portion 36 is pressed in the axis L direction of the first passage 211c by the spring 25 in the seated state.
  • the pressing force generated in the circumferential direction of the body 33 can be formed in a part of the valve body 33 that is smaller than the other part of the valve body 33.
  • the vibration absorbing portion 36 can be formed in a portion where the pressing force of the valve body 33 becomes relatively small. A portion with a relatively small pressing force is more likely to vibrate than another portion with a relatively large pressing force. Accordingly, when a negative pressure pulsation occurs in the first passage 211c, the accommodating portion 212a, and the second passage 212b in the seating state of the valve body 33, and the valve body 33 vibrates, the valve body 33 (specifically, the disk portion 332).
  • the vibration absorbing portion 36 formed in a part of can absorb more vibration due to negative pressure pulsation than the other part of the valve body 33 (specifically, the disk portion 332). Thereby, it can suppress that the whole valve body 33 vibrates. Therefore, when the valve body 33 vibrates due to the negative pressure pulsation, even if the valve body 33 is repeatedly seated and separated from the valve seat 22, vibration of the entire valve body 33 is suppressed.
  • the contact sound generated when the valve body 33 (specifically the protrusion 333) contacts the valve seat 22 can be reduced.
  • the third valve body side plane H is not parallel to the reference plane B, and the third valve seat side plane I is parallel to the reference plane B.
  • the third valve body side plane H is parallel to the reference plane B, and the third valve seat side plane I is parallel to the reference plane B by having an angle with respect to the axial direction of the first passage 211c. It is also possible not to.
  • the protrusion 333 of the valve element 33 has the same protrusion length in the circumferential direction, so that the third valve element side plane H is parallel to (coincides with) the reference plane B.
  • the third valve including the contact portion in the valve seat 22 is formed by the tip surface of the projecting portion 211a constituting the first body portion 211 forming the valve seat 22 having an angle with respect to the axial direction of the first passage 211c.
  • the seat side plane I is no longer parallel to the reference plane B. Thereby, the third valve body side plane H and the third valve seat side plane I are not parallel because the dihedral angle is not zero.
  • the pressing force is applied to the valve body 33.
  • a relatively small portion can be formed.
  • the vibration absorbing portion 36 can be formed in a portion where the pressing force of the valve body 33 becomes relatively small.
  • the vibration absorbing portions 16, 26, and 36 are the valve bodies 13, 23 and 33 are formed so as to absorb more vibration applied to the valve bodies 13, 23, and 33 than in other parts of the valve bodies 13, 23, and 33.
  • the vibration absorbing portions 16, 26, 36 instead of or in addition to forming the vibration absorbing portions 16, 26, 36 in the valve bodies 13, 23, 33, the radially outward of the negative pressure inlet 3 extends, and It is also possible to form the vibration absorbing portion 46 in the grommet G which is an elastic member having a circumferential protrusion that covers the negative pressure inlet 3 in the circumferential direction.
  • the fourth embodiment will be described in detail.
  • the check valve 20 described in the second embodiment is used, the same reference numerals are given to the same parts as in the second embodiment, and the description thereof is omitted.
  • the vibration absorbing portion 46 can be provided in the grommet G in each of the embodiments and modifications other than the second embodiment.
  • the grommet G of the fourth embodiment is airtightly provided between the first main body portion 211 and the second main body portion 212 and the negative pressure inlet 3 to form a vibration absorbing portion 46.
  • the grommet G has a flange portion G1.
  • the flange portion G1 is formed as a circumferential protrusion that extends outward in the radial direction of the negative pressure introduction port 3 and covers the negative pressure introduction port 3 in the circumferential direction.
  • the flange portion G1 sandwiches the shell 4 and a vibration absorbing portion 46 is formed. Therefore, in the fourth embodiment, the check valve 20 includes the vibration absorbing portion 46 formed in the flange portion G1 facing the shell 4 around the negative pressure introduction port 3.
  • the vibration absorbing portion 46 is formed on a part of the two peripheral surfaces G11 and G12 that are sandwiched and opposed to the shell 4 in the flange portion G1.
  • the vibration absorbing portion 46 absorbs more vibrations transmitted to the shell 4 through the first main body portion 211 and the second main body portion 212 than the other portions of the flange portion G1. It suppresses that the body 23 vibrates.
  • the cross section 15b-15b in FIG. 15a that is, the vibration absorbing portion 46 formed on the peripheral surface G11 is described as an example, but the vibration absorbing portion 46 formed on the peripheral surface G12 is also the same. It has the structure of.
  • the vibration absorbing portion 46 is formed to include a groove portion 461 formed along the circumferential direction of the negative pressure inlet 3 on the circumferential surface G11 of the flange portion G1.
  • the groove portion 461 is a part of the peripheral surface G11 of the flange portion G1, specifically, a close contact portion G111 (peripheral surface) with the shell 4 formed at intervals in the circumferential direction. In G12, it is formed between the contact portions G112).
  • the groove portion 461 is formed so as to open to the shell 4 side, and has a rectangular cross-sectional shape.
  • the cross-sectional shape of the groove part 461 it is also possible to form in V shape similarly to the case of the groove part 161 of said 1st embodiment.
  • the rigidity of the part in which the groove part 461 is formed (hereinafter referred to as “a part of the flange part G1”) and the close contact in which the groove part 461 is not formed.
  • the rigidity of the part G111 (contact part G112), that is, the other part of the flange part G1 is different.
  • the rigidity of a part of the flange part G1 is smaller (softer) than the rigidity of the other part (the contact part G111 and the contact part G112) of the flange part G1.
  • four groove portions 461 are formed on the peripheral surface G11 and two groove portions 461 are formed on the peripheral surface G12.
  • the number of the groove portions 461 is not limited to this. Needless to say, it can be formed by increasing or decreasing as necessary.
  • vibration energy of the first main body portion 211 and the second main body portion 212 is consumed by transmitting vibration to the shell 4, vibration energy given from the air to the valve body 13 can be consumed. Thereby, it can suppress that the valve body 13 vibrates. Therefore, also in this fourth embodiment, the same effects as those of the above embodiments and modifications can be obtained.
  • the groove portion 461 is formed along the circumferential direction of the peripheral surface G11 and the peripheral surface G12 of the flange portion G1.
  • the groove portion 461 instead of or in addition to forming the groove portion 461 along the circumferential direction of the circumferential surface G11 and the circumferential surface G12, as shown in FIG. 16, the circumferential surface G11 and the circumferential surface G12 of the flange portion G1. It is also possible to form a groove 462 extending in the radial direction of the negative pressure inlet 3.
  • the vibration absorbing portion 46 in the first modification is formed including the groove portion 462 formed in the radial direction at a part of the peripheral surface G11 and the peripheral surface G12 of the flange portion G1.
  • the vibration absorbing portion 46 formed on the cross section 15b-15b in FIG. also has the same structure.
  • the groove part 462 is formed in a radial direction in a part of the flange part G1, as shown in FIG.
  • the groove 462 is formed so as to open to the shell 4 side, and has a rectangular cross-sectional shape.
  • the cross-sectional shape of the groove part 461 it is also possible to form in V shape similarly to the case of the groove part 162 of the 1st modification of the said 1st embodiment.
  • the rigidity of a part of the flange part G1 is smaller (softer) than the rigidity of the other part of the flange part G1.
  • the groove portion 461 or the groove portion 462 of the vibration absorbing portion 46 is formed on both the peripheral surface G11 and the peripheral surface G12 of the flange portion G1.
  • the groove portion 461 or A part of the flange part G1 in which the groove part 462 is formed can be easily vibrated. Therefore, also in this case, the same effects as those of the fourth embodiment and the first modification can be obtained.
  • the groove portion 161 described in the first embodiment can be formed in the disk portion 232 of the valve body 23 described in the second embodiment.
  • the thin portion 261 or the extended portion 262 described in the second embodiment can be formed in the disk portion 132 of the valve body 13 described in the first embodiment. Also by these combinations, the same effects as those in the above embodiments and modifications can be obtained.
  • the grooves 161 and 162 are formed to open toward the spring 15. In this case, it is also possible to form the grooves 161 and 162 so as to open toward the valve seat 12. Even in this case, the same effects as those of the first embodiment and the first modification of the first embodiment can be obtained.
  • the check valves 10, 20, and 30 are assembled to the negative pressure inlet 3 formed in the shell 4 of the negative pressure booster 2 via the grommet G. did.
  • the shell 4 of the negative pressure booster 2 is made of resin, for example, the first main body portions 111 and 211 can be formed integrally with the shell 4. According to this, the work which fixes the 1st main-body parts 111 and 211 to the shell 4 is unnecessary, and it can reduce manufacturing cost.
  • the check valves 10, 20, and 30 are directly assembled to the negative pressure booster 2.
  • the check valves 10, 20, and 30 can be assembled in the connection pipe T or in an intermediate portion of the connection pipe T. According to this, it is not necessary to secure a space for installing the check valves 10, 20, and 30 around the negative pressure booster 2, and it is possible to secure the degree of freedom of arrangement of the negative pressure booster 2. it can.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Check Valves (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

L'invention concerne un clapet anti-retour de surpression (10) comprenant : un corps principal (11) fixé à une admission de vide (3) ; un premier passage (111c), une section de réception (112a) et un second passage (112b) ; un siège de clapet (12) formé dans le premier passage (111c) ; un corps de clapet (13) reçu à l'intérieur de la section de réception (112a) ; et des ressorts (15) qui sollicitent le corps de clapet (13) en direction du siège de clapet (12). Le clapet anti-retour (10) comprend également des sections d'absorption de vibrations (16), de sorte que, lorsque le corps de clapet (13) est supporté sur le siège de clapet (12), une partie du corps de clapet (13) absorbe davantage de vibrations communiquées au corps de clapet (13) par rapport à d'autres parties du corps de clapet (13).
PCT/JP2017/026818 2016-07-25 2017-07-25 Clapet anti-retour de surpression Ceased WO2018021283A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780045696.1A CN109477589B (zh) 2016-07-25 2017-07-25 负压式助力装置用止回阀
US16/318,570 US20190219185A1 (en) 2016-07-25 2017-07-25 Vacuum booster check valve

Applications Claiming Priority (4)

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JP2016145795 2016-07-25
JP2016-145795 2016-07-25
JP2016-213870 2016-10-31
JP2016213870A JP2018020755A (ja) 2016-07-25 2016-10-31 負圧式倍力装置用逆止弁

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113544418A (zh) * 2019-03-04 2021-10-22 康尔福盛303公司 堞形止回阀
WO2025035579A1 (fr) * 2023-08-11 2025-02-20 苏州卓兆点胶股份有限公司 Soupape de régulation automatique de pression pour coller un panneau photovoltaïque

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JPS60117260U (ja) * 1984-01-19 1985-08-08 日信工業株式会社 負圧式ブ−スタの負圧導入装置
JP2002349439A (ja) * 2001-05-15 2002-12-04 Lg Electronics Inc 弁プレート構造
JP2015024700A (ja) * 2013-07-25 2015-02-05 株式会社アドヴィックス 負圧式倍力装置用チェック弁

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Publication number Priority date Publication date Assignee Title
JPS60117260U (ja) * 1984-01-19 1985-08-08 日信工業株式会社 負圧式ブ−スタの負圧導入装置
JP2002349439A (ja) * 2001-05-15 2002-12-04 Lg Electronics Inc 弁プレート構造
JP2015024700A (ja) * 2013-07-25 2015-02-05 株式会社アドヴィックス 負圧式倍力装置用チェック弁

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CN113544418A (zh) * 2019-03-04 2021-10-22 康尔福盛303公司 堞形止回阀
CN113544418B (zh) * 2019-03-04 2024-11-22 康尔福盛303公司 堞形止回阀
WO2025035579A1 (fr) * 2023-08-11 2025-02-20 苏州卓兆点胶股份有限公司 Soupape de régulation automatique de pression pour coller un panneau photovoltaïque

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