WO2002012731A1 - Accumulator - Google Patents
Accumulator Download PDFInfo
- Publication number
- WO2002012731A1 WO2002012731A1 PCT/JP2001/006646 JP0106646W WO0212731A1 WO 2002012731 A1 WO2002012731 A1 WO 2002012731A1 JP 0106646 W JP0106646 W JP 0106646W WO 0212731 A1 WO0212731 A1 WO 0212731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- housing
- accumulator
- forming member
- seal
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
- F15B1/103—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means the separating means being bellows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/22—Liquid port constructions
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
- F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3153—Accumulator separating means having flexible separating means the flexible separating means being bellows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3158—Guides for the flexible separating means, e.g. for a collapsed bladder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/60—Assembling or methods for making accumulators
- F15B2201/605—Assembling or methods for making housings therefor
Definitions
- the present invention relates to an accumulator used as an accumulator or a pulsation damper.
- hydraulic systems related to brakes or suspensions of cars use metal accumulators for the purpose of accumulating pressure (compensating pump capacity, etc.) or damping pulsation, etc.
- the area in which this accumulator functions Is usually the oil pressure range above point A in the graph of FIG. Therefore, the hydraulic range below point A is equivalent to no accumulator.
- the chamber 53 and the restrictor 54 together with the bellows 56 constitute an end member (also referred to as a bellows cap) which constitutes the operating member 55 of the accumulator 51. ) Because it is provided inside 57, a large capacity bellows 56 must be used to fill the gas inside, so the size of the accumule 51 increases. Inconvenience There is. Further, since the chamber 53 is formed by welding the chamber forming member 58 to the end member 57, the number of welds of the accumulator 51 increases, and the manufacturing process of the accumulator 51 becomes complicated. There are also inconveniences.
- an object of the present invention to provide an accumulator that can suppress hydraulic vibration noise in a range equal to or lower than the gas pressure of an accumulator and that can reduce the size of the accumulator.
- an accumulator includes an operating member including a bellows inside a housing to partition the inside of the housing into a pressure sealing chamber and a pressure inflow chamber, and
- an accumulator in which a fluid inlet for introducing a pressure fluid from the system side to the pressure inflow chamber is provided at an end wall portion of the chamber, a chamber-forming member is fixed inside the housing, A chamber and a throttle are provided between the forming member and the end wall of the nodging.
- the chamber-forming member is fixed to the housing by non-welding means such as fitting, press-fitting, or caulking. It is characterized by the following.
- the accumulator according to claim 3 of the present invention is the accumulator according to claim 1, wherein the chamber-forming member is provided on the inner surface of the housing so that the chamber-forming member is engaged with the housing. It is characterized by being fixed by a part.
- the accumulator according to claim 4 of the present invention is the accumulator according to claim 1 described above.
- the chamber forming member is fixed to the housing by a retaining member such as a retaining ring fixed to the inner surface of the housing.
- the accumulator according to claim 5 of the present invention is the accumulator according to claim 1, wherein the chamber-forming member is provided on the outer periphery of the insertion fixing portion provided in the housing. It is characterized by being fixed by inserting.
- the accumulator according to claim 6 of the present invention is the accumulator according to claim 1, wherein the chamber-forming member is provided on the outer periphery of the insertion fixing portion provided in the housing. It is characterized in that it is fixed by inserting and deforming the tip of the insertion fixing portion after insertion.
- An accumulator according to a seventh aspect of the present invention is the accumulator according to any one of the first to sixth aspects, wherein an elastic seal with which the operating member comes into contact with or separates at the time of the operation is provided on the chamber forming member. It is characterized by the following.
- an accumulator according to claim 8 of the present invention is the accumulator according to any one of claims 1 to 7, wherein the shell and the ⁇ 3 ⁇ 4 member forming the housing and the bellows are held. It is characterized in that the three parts of the rose holder are assembled together by welding.
- the goo noise is reduced by the vibration damping action of the chamber and the throttle.
- the chamber and the throttle are not working members, but between the channel forming member fixed inside the housing and the end wall portion of the housing provided with the fluid inlet. Since there is no need to use large capacity bellows for the operating member.
- the chamber one is formed by the chamber one forming member and the end wall of the housing. In this case, since the entire inner diameter of the housing can be used to form the chamber, there is an advantage that the height dimension (axial dimension) of the housing can be relatively small. .
- the chamber-forming member is fixed to the housing by non-welding means such as fitting, press-fitting, or caulking instead of welding. Therefore, even if a chamber is provided in the housing, the number of welds does not increase.
- the chamber forming member is not welded to the housing, but is fixed to the housing by a protrusion-shaped retaining engagement portion provided on the inner surface of the housing. Therefore, even if a chamber is provided in the housing, the number of welds does not increase.
- the member forming the chamber is not welded to the housing but is fixed by a retaining member such as a snap ring fixed to the inner surface of the housing. Therefore, even if a chamber is provided in the housing, the number of welds does not increase.
- the chamber forming member is inserted into the outer periphery of the insertion fixing portion provided in the housing, instead of welding the chamber forming member to the housing. Since it is fixed, the number of welds does not increase even if the chamber is provided in the housing. Further, in the accumulator according to claim 6 of the present invention having the above configuration, the chamber forming member is inserted into the outer periphery of the insertion fixing portion provided in the housing, instead of welding the chamber forming member to the housing. Since the insertion is fixed by bending, caulking, or crushing the tip of the insertion fixing part after insertion, the number of welds may increase even if one chamber is provided in the housing. Absent.
- an elastic seal with which the operating member comes and goes when the operation member is operated is provided on the chamber-forming member. Therefore, when the accumulator is operated, the pressure in the pressure inflow chamber, that is, the pressure on the system side, can be maintained at a predetermined value or more even when the pressure in the system becomes lower than the sealed gas pressure. It becomes possible. It is preferable to form the elastic seal integrally with the chamber forming member made of a rigid material from the viewpoint of handling parts.
- the three parts of the shell and the end member forming the housing, and the bellows holder for holding the bellows are assembled together by welding. Due to the structure, the welding operation can be completed only once, thereby facilitating the assembling operation.
- the proposal includes the following technical matters.
- One of the issues to be solved by this proposal is to provide a suitable chamber on the hydraulic chamber side in the accumulator to absorb hydraulic vibration noise (for example, goo noise) in the range below the gas pressure of the accumulator.
- the function is to be provided in the accumulator all the time.
- a chamber and a throttle are provided in the accumulator to combine oil compressibility and the throttle effect, and to produce medium to high frequency vibrations in hydraulic pressure within the hydraulic pressure range below the charged gas pressure.
- the purpose is to provide a function that can be absorbed in the accumulator all at once, and to suppress vibration noise generated in the hydraulic system at low cost.
- one of the accumulators proposed in the present invention is a metal bellows accumulator having a chamber and a chamber, and is characterized by the following.
- the plate that constitutes the chamber and the double seal (reel seal (main and spare)) to ensure reliability are made of rubber-baked integral parts, which are held and fixed by shell caulking.
- one chamber can be formed and two seals can be fixed at the same time, thereby realizing light weight, compactness, and low cost.
- the height of the chamber has been reduced by utilizing the entire inner diameter of the shell under the seal, and the seal has been press-fitted to facilitate assembly. Things.
- FIG. 1 shows a cross section of an accumulator 1 according to a first embodiment of the present invention, and an enlarged view of a main part thereof is shown in FIG.
- the accumulator 1 is a metal bellows type accumulator and is configured as follows.
- a lid member (also referred to as a gas end cover) 4 is fixed (carbon dioxide laser welding) to an open end of a bottomed cylindrical shell 3, and a housing 2 is provided.
- An operating member 5 having a bellows 6 and an end member (also referred to as a bellows cap) 7 is housed therein.
- the bellows 6 has one end fixed to the lid member 4 (TIG welding) and the other end fixed to the end member 7 (TIG welding).
- the interior of 2 is divided into a bellows 6 and a pressure sealing chamber (also called a gas chamber) 8 inside the member 7 and an outer pressure inflow chamber (also called a liquid chamber or a hydraulic chamber) 9.
- bellows 7 metal bellows such as an electrodeposited bellows, a molded bellows, and a welded bellows are used. However, depending on the specifications and applications of the accumulator 1, bellows of other materials can be used. Further, the end member 7 may be formed integrally with the bellows 6.
- the cover member 4 constituting a part of the housing 2 is provided with a pressure inlet 10 for injecting gas into the pressure sealing chamber 8.
- the inlet 10 is connected to the inlet 10.
- a plug member (also referred to as a gas plug) 11 for closing is attached and covered with a hexagon nut 12. Therefore, plug member 1 1 and hexagon nut 1 2
- a gas of a predetermined pressure is injected from the injection port 10 into the sealing chamber 8 before fixing the gasket, and the plug member 11 and the hexagonal nut 12 are fixed (projection welding together) after the injection so that the gas of the predetermined pressure is formed. Is sealed in the sealing chamber 8. Nitrogen gas or the like is suitable as the type of gas to be filled.
- the end wall 3 a of the shell 3, which also forms a part of the housing 2, has a cylindrical portion 14 having a thread portion 14 for connecting the accumulator 1 to a pressure pipe or the like on a hydraulic system (not shown).
- the mounting portion 13 is provided with a fluid inlet (both a pressure inlet and a fluid passage) for introducing a system side pressure fluid (brake fluid) into the pressure inlet chamber 9. 15) are provided. Therefore, the actuator 1 is connected to the system side at the mounting portion 13, and the pressure on the system side is introduced from the inlet 15 to the inflow chamber 9.
- An annular sliding member (also referred to as a vibration damping ring) 16 is mounted on the outer peripheral side of the other end of the bellows 6 fixed to the end member 7 or on the outer peripheral side of the end member 7.
- the sliding member 16 slides with its outer periphery against the inner peripheral surface of the shell 3 when the end member 7 moves during the expansion / contraction operation of the shell 3. Accordingly, by the sliding guide of the sliding member 16, the end member 7 moves parallel to the inner peripheral surface of the shell 3 and the bellows 6 expands and contracts parallel to the inner peripheral surface of the shell 3. The end member 7 or the bellows 6 is prevented from coming against the inner peripheral surface of the shell 3.
- the sliding member 16 does not separate the pressure inflow chamber 9 into a space 9 a on the outer peripheral side of the bellows 6 and a space 9 b on the lower side of the end member 7 in the drawing.
- the sliding member 16 is provided with a pressure communicating portion (not shown).
- a chamber forming member (also referred to as a seal plate) 17 is fixed, and the chamber forming member 17 and the end of the shell 3 are fixed.
- a chamber 18 and a throttle (also referred to as a nozzle or orifice) 19 are provided between the wall 3a.
- the chamber one forming member 17 is provided with an elastic seal 20 with which the end member 7 of the operating member 5 comes into contact with or separates during the operation.
- the forming member 17 is formed in an annular shape with a predetermined metal
- annular inner peripheral flat portion 17b integrally formed radially outward from the end wall 3a end of the inner peripheral cylindrical portion 17a, and an inner peripheral flat portion
- An outer peripheral cylindrical portion 17c integrally formed from the outer peripheral end portion of the 17b toward the end member 7 direction, and a radially outward direction from the end member 7 side end portion of the outer peripheral cylindrical portion 17c.
- the outer peripheral flat part 17 d is integrally formed from the outer peripheral end portion of the 17b toward the end member 7 direction, and a radially outward direction from the end member 7 side end portion of the outer peripheral cylindrical portion 17c.
- the inner peripheral flat part 17b is brought into contact with the inner surface of the end wall 3a of the shell 3 and the outer peripheral end of the outer peripheral flat part 17d is placed on the outer periphery of the end wall 3a of the shell 3.
- the chamber-forming member 17 is fixed to the shell 3 by pressing the outer periphery of the step 3b of the shell 3 as shown in the figure while abutting the annular step 3b provided in advance. Has been done.
- reference numeral 3c indicates a force-shrink portion.
- the inner peripheral side space of the inner peripheral cylindrical portion 17 a is a communication portion 21 that communicates the pressure inflow chamber 9 with the fluid inlet 15.
- the chamber 18 is formed as an annular space between the outer cylindrical portion 17c and the outer flat surface 17d of the chamber forming member 17 and the end wall 3a of the seal 3, The volume is set to, for example, about 10 cc.
- the throttles 19 are provided as grooves or cutouts on the inner surface of the end wall 3a of the shell 3 so that the fluid inlet 15 and the chamber 18 communicate with each other. (For example, evenly distributed)
- the elastic seal 20 is constituted by a combination of a lip-shaped inner peripheral side seal 22 and an outer peripheral side seal 23 formed of a predetermined rubber-like viscous material.
- the inner peripheral side seal 22 is an annular space 17 e surrounded by the inner peripheral cylindrical portion 17 a, the inner peripheral flat portion 17 b and the outer peripheral cylindrical portion 17 c in the chamber forming member 17.
- the operating member 5 has a double-structured loop end 22a which is vulcanized and adhered to the inner surface thereof, and the end member 7 of the operating member 5 comes into contact with and separates during the operation.
- the outer peripheral side seal 23 is vulcanized and bonded to the end face 7 side end face of the outer peripheral flat portion 17 d of the chamber one forming member 17, and the end member 7 of the operating member 5 comes into contact with and separates during the operation. It has a lip end 23a of a triple structure.
- a film-like coating portion 24 as a part of the outer peripheral side seal 23 is formed on the end surface of the outer peripheral flat portion 17 d of the chamber forming member 17 on the end member 7 side, the outer peripheral surface and the end wall 3 a side. The coating portion 24 seals the space between the chamber-forming member 17 and the shell 3 by vulcanization.
- the chamber 18 and the throttle 19 are not the actuating member 5 as in the prior art, but the channel forming member 17 and the end wall of the seal 3 fixed inside the shell 3 in the housing 2. Since the bellows 6 is provided between the bellows 6 and the portion 3a, it is not necessary to use a large-capacity bellows 6 unlike the above-described conventional technology.
- the entire inner diameter of the shell 3 can be used to form the chamber 18 as shown, so that the height of the shell 3 or the housing 2 can be kept relatively small. You. Therefore, from these facts, the entire accumulator 1 can be made smaller than the above-described conventional technology.
- the accumulating unit 1 is the chamber-forming member 17.
- the number of welds does not increase even if the steel is provided. Therefore, the manufacture of the accumulator 1 can be made easier than in the case of the above-described conventional technology.
- the sealing action of the elastic seal 17 causes the operation of the accumulator 1 to operate.
- the pressure in the pressure inflow chamber 9 that is, the pressure on the system side becomes equal to or lower than the sealing gas pressure
- the pressure in the pressure inflow chamber 9 can be maintained at a predetermined value or more. 646 ability. Therefore, it is possible to prevent the bellows 6 from being expanded and damaged by the pressure difference between the inside and outside.
- the elastic seal 20 is composed of a combination of the inner peripheral seal 22 and the outer peripheral seal 23, and has high safety and reliability because it is a double seal.
- the means for fixing the chamber-forming member 17 to the housing 2 is not limited to the above-described force crimping, but may be other non-welding means such as fitting or press-fitting. It may be a combination.
- Fig. 3 shows an example of a fixed structure as shown below.
- a third cylindrical portion 17 f is further formed on the outer peripheral end of the outer peripheral flat portion 17 d of the chamber one forming member 17 in the first embodiment in the direction of the end wall portion 3 a.
- the chamber-forming member 17 is press-fitted to the end wall 3a of the shell 3 in the housing 2 with the third cylindrical portion 17f, and caulked by the shell 3.
- the inner peripheral seal 22 and the outer peripheral seal 23 are continuously formed by a coating 25 integrally formed between the two seals 22, 23.
- the outer peripheral portion of the chamber-forming member 17 is positioned and held with respect to the shell 3 by the third cylindrical portion 17f, as in the first embodiment. There is no need to provide the step 3b in advance on the end wall 3a of the shell 3.
- FIG. 4 shows a cross section of an accumulator 1 according to a third embodiment of the present invention, and an enlarged view of a main part thereof is shown in FIG.
- the accumulator 1 is a metal-cap-type accumulator, and is configured as follows.
- a lid member also referred to as a gas end cover
- a port member also referred to as an oil port
- a bellows holder 13 Inside the housing 2, a bellows holder 13, a bellows 6, and an end member (together with a bellows cap) are provided.
- An actuating member 5 with 7 is accommodated.
- the bellows holder 32 is fixed (welded) to the inner surfaces of the shell 3 and the lid member 4.
- the bellows 6 has one end fixed (welded) to the bellows holder 13 and the other end closed.
- the bellows holder is fixed (welded) to the member 7, so that the bellows holder — 32, the bellows 6, and the end member 7 allow the inside of the housing 2 to be inside the bellows holder — 32, the bellows 6, and the end member 7. It is divided into a pressure sealing chamber (also called gas chamber) 8 and an outer pressure inflow chamber (also called liquid chamber or hydraulic chamber) 9.
- bellows 7 metal bellows such as electrodeposited bellows, molding bellows or welding bellows are used, but depending on the specifications and use of accumulator 1, bellows of other materials may be used. It is possible. Further, the end member 7 may be formed integrally with the bellows 6.
- the cover member 4 constituting a part of the housing 2 is provided with a pressure inlet 10 for injecting gas into the pressure sealing chamber 8.
- the inlet 10 is provided with the inlet 10.
- a plug member (also referred to as a gas plug) 11 for closing the pipe is attached and covered with a hexagon nut 12. Therefore, before fixing the plug member 11 and the hexagon nut 12, gas of a predetermined pressure is injected from the injection port 10 into the sealing chamber 8, and after the injection, the plug member 11 and the hexagon nut 12 are fixed (both are welded). As a result, gas at a predetermined pressure is sealed in the sealing chamber 8.
- nitrogen gas or the like is preferable.
- a cylindrical mounting part 1 having a thread part 14 for connecting the accumulator 1 to a pressure pipe or the like (not shown) on a port member 31 which also forms a part of the housing 2.
- a fluid inlet also referred to as a pressure inlet or a fluid passage
- a system-side pressure fluid brake fluid
- An annular sliding member (also referred to as a vibration damping ring) 16 is mounted on the outer peripheral side of the other end of the bellows 6 fixed to the end member 7 or on the outer peripheral side of the end member 7.
- the sliding member 16 slides with its outer periphery against the inner peripheral surface of the shell 3 when the end member 7 moves during the expansion / contraction operation of the shell 3. Therefore, by the sliding guide of the sliding member 16, the end member 7 moves in parallel with the inner peripheral surface of the shell 3 and the bellows 6 expands and contracts in parallel with the inner peripheral surface of the seal 3. The end member 7 or the bellows 6 is prevented from coming against the inner peripheral surface of the shell 3.
- the sliding member 16 prevents the pressure inflow chamber 9 from being divided into a space 9 a on the outer peripheral side of the bellows 6 and a space 9 b on the lower side of the end member 7 in the figure.
- the moving member 16 is provided with a pressure communication portion (not shown).
- a chamber forming member (also referred to as a seal plate) 17 is fixed inside the nozzle 2 and inside the end wall 3 a of the shell 3 and the port member 31.
- a chamber 18 and a throttle (also referred to as a nozzle or orifice) 19 are provided between the forming member 17 and the end wall 3 a of the shell 3 and the port member 31.
- an elastic seal (also referred to as a first elastic seal) 20 is provided on the chamber forming member 17 so that the end member 7 of the operating member 5 comes into contact with or separates during the operation thereof. Further, a second elastic seal 33 that seals between the chamber one forming member 17 and the shell 3 is provided.
- the chamber-forming member 17 is formed of a predetermined metal in an annular shape.
- An inner peripheral side space of the inner peripheral cylindrical portion 17a is a communication portion 21 that communicates the pressure inflow chamber 9 with the fluid inlet 15.
- the chamber 18 is formed by the outer cylindrical portion 17 c, the outer flat surface portion 17 d and the third cylindrical portion 17 f of the chamber 1 forming member 17 and the end wall portion 3 a of the shell 3 and the port member 31. It is formed as an annular space between them.
- the throttles 19 are provided as grooves or notches on the inner surface of the port member 31 so that the fluid inlet 15 and the chamber 18 communicate with each other, and the required number is provided radially. (E.g., four equally distributed).
- the elastic seal 20 is formed by a combination of a lip-shaped inner seal (also referred to as a first seal) 22 and an outer seal (also referred to as a second seal) 23 formed of a predetermined rubber-like elastic material.
- the two seals 22 and 23 are respectively configured as follows. .
- the inner peripheral side seal 22 is an annular space 17 surrounded by the inner peripheral cylindrical portion 17a, the inner peripheral flat portion 17b, and the outer peripheral cylindrical portion 17c in the chamber-forming member 17.
- the end member 7 of the operating member 5 has a lip end 22a of a double structure which comes into contact with and separates from the inner surface when the member is operated.
- outer peripheral side seal 23 is vulcanized and bonded to the end face 7 side end face of the outer peripheral flat portion 17 d of the chamber one forming member 17, and the end member 7 of the operating member 5 comes into contact with and separates during the operation. It has a double-ended loop end 23a.
- the second elastic seal 33 is constituted by a combination of a lip-shaped third seal 34 and a fourth seal (also referred to as an outer peripheral rubber portion) 35 formed of a predetermined rubber-like elastic material.
- 4 and 3 are configured as follows. That is, first, the third seal 34 is vulcanized and bonded to the outer peripheral edge of the end member 7 side end surface of the outer peripheral flat portion 17 d of the chamber forming member 17, and the peripheral wall of the shell 3 It has a lip end that always contacts the 3d inner surface.
- the fourth seal 35 is vulcanized and bonded to the outer peripheral surface of the third cylindrical portion 17 f of the chamber-forming member 17, and has a lip end that is always in contact with the inner surface of the peripheral wall 3 d of the shell 3. have.
- the inner peripheral side seal 22 and the outer peripheral side seal 23 are integrally formed via the coating portion 25, and the outer peripheral side seal is formed.
- the reference numeral 23 and the third seal 34 are integrally formed via the coating 36. Further, the third seal 34 and the fourth seal 35 are also integrally formed via the coating 37. Therefore, the inner seal 22, the outer seal 23, the third seal 34 and the fourth seal 35 are all integrally formed, and the elastic seal 20 and the second elastic seal 33 are formed integrally. Are also integrally molded.
- the chamber forming member 17 in which the elastic seal 20 and the second elastic seal 33 were vulcanized and bonded was vulcanized and bonded to the outer peripheral surface of the third cylindrical portion 17 f when it was press-fitted into the seal 3.
- the fourth seal 35 of the second elastic seal 33 is fixed to the inside of the shell 3 by a press-fit allowance to be compressed in the radial direction.
- the projection-shaped retaining engagement portion 3 e is formed by forming a concave portion 3 f on the outer peripheral surface of the peripheral wall portion 3 d of the shell 3 and partially deforming the peripheral wall portion 3 d of the shell 3 in the radial direction.
- the size (depth) of the concave portion 3f is preferably about 0.2 to 0.5 mm in actual size.
- the projection-shaped retaining engagement portion 3e is formed after the chamber-forming member 17 is press-fitted.
- the vibration energy is reduced. It is also consumed as dynamic pressure loss by reaching chamber 18. Accordingly, the vibration noise such as the goo noise can be suppressed by the vibration damping action of the chamber 118 and the throttle 19.
- the chamber 18 and the throttle 19 are not the operating member 5 as in the above-mentioned prior art, but the chamber-forming member 17 and the shell fixed inside the shell 3 and the port member 31 in the housing 2. Since the bellows 6 is provided between the end wall portion 3a and the port member 31 of the third embodiment, it is not necessary to use a large-capacity bellows 6 unlike the above-described prior art.
- the entire inner diameter of the shell 3 can be used for forming the chamber 18 as shown in the figure, so that the height of the shell 3 or the housing 2 can be kept relatively small. . Therefore, from these facts, the entire accumulator 1 can be made smaller than the above-described conventional technology.
- the chamber-forming member 17 is fixed to the shell 3 of the housing 2 by engagement with the press-fitting and retaining engagement portion 3e, not by welding as in the above-described conventional technology, Even if the accumulator 1 is provided with the chamber-forming member 17, the number of welds for this is not increased. Therefore, the production of the accumulator can be made easier than in the case of the above-mentioned conventional technology.
- the operating member 5 is provided with an elastic seal 20 which comes into contact with and separates at the time of the operation thereof, the sealing action of the elastic seal 17 allows the operation of the accumulator 1 when the accumulator 1 operates. Even when the pressure in the pressure inflow chamber 9, that is, the pressure on the system side is equal to or lower than the sealing gas pressure, the pressure in the pressure inflow chamber 9 can be maintained at a predetermined value or more. Therefore, it is possible to prevent the bellows 6 from being expanded and damaged by the pressure difference between the inside and outside.
- the elastic seal 20 is composed of a combination of the inner peripheral seal 22 and the outer peripheral seal 23, and has high safety and reliability because it is a double seal. Also, this elastic seal 20 forms a chamber.
- the means for fixing the chamber-forming member 17 to the housing 2 is not limited to the above-described engagement with the press-fitting and retaining engagement portion 3e, and may be as follows. , Still, a combination of these may be used.
- FIG. 6 and FIG. 7 each show, as an example, a fixed structure configured as follows. Fourth embodiment
- the outer wall 3d of the shell 3 is located between the third seal 34 and the fourth seal 35.
- a convex retaining engagement portion 3e is formed by caulking the portion, whereby the chamber forming member 17 is fixed to the shell 3 and is prevented from coming off.
- a step 3 g is provided in advance on the inner peripheral surface of the peripheral wall 3 d of the shell 3 and between the third seal 34 and the fourth seal 35.
- FIG. 8 shows a cross section of an accumulator 1 according to a sixth embodiment of the present invention, and an enlarged view of a main part thereof is shown in FIG.
- the accumulator 1 is a metal bellows type accumulator and is configured as follows.
- a lid member also referred to as a gas end cover or upper shell
- a bottomed cylindrical shell also referred to as a lower seal
- Port member also referred to as oil port or port
- IGF welding or plasma welding to form a housing 2 with these parts.
- a bellows holder 1 also simply referred to as a holder
- a bellows 6 and an end member (bello And an operating member 5 having a spacer 39.
- the bellows holders 132 are fixed to the inner surfaces of the seal 3 and the cover member 4 (carbon dioxide laser welding or electron beam welding), and the bellows 6 has one end fixed to the bellows holder 32 ( TIG welding), and the other end is fixed to the end 7 (TIG welding). Therefore, a bellows assembly consisting of the bellows holder 132, the bellows 6, and the end member 7 is used.
- the inside of the housing 2 is a pressure sealing chamber (also referred to as a gas chamber, gas volume: for example, 120 cm 3) 8 inside these components and a pressure inflow chamber (also referred to as a liquid chamber or a hydraulic chamber, zero-down sealing) outside. Liquid: for example, 50 cc) 9.
- the three points of the bellows holder 1, 2, the shell 3 and the lid member 4 (bellows assembly) are not welded individually, but they are put together by laser welding or beam welding (EBW). It is preferable to assemble.
- bellows 7 metal bellows such as electrodeposited bellows, molded bellows or welded bellows are used, but depending on the specifications and use of accumulator 1, bellows of other materials may be used. It is possible. Further, the end member 7 may be formed integrally with the bellows 6.
- the cover member 4 constituting a part of the above-mentioned nosing 2 is provided with a pressure inlet 10 for injecting gas into the pressure sealing chamber 8.
- the inlet 10 is provided with the inlet 10.
- a plug member (also referred to as a gas plug) 11 for closing the pipe is attached and covered with a hexagon nut 12. Therefore, before fixing the plug member 11 and the hexagonal nut 12, gas of a predetermined pressure is injected from the injection port 10 into the sealing chamber 8, and after the injection, the plug member 11 and the hexagonal nut 12 are fixed (both are projections). By welding, gas of a predetermined pressure is sealed in the sealing chamber 8. Nitrogen gas or the like is suitable as the type of gas to be filled.
- a cylindrical mounting part 1 having a thread part 14 for connecting the accumulator 1 to a pressure pipe or the like (not shown) on a port member 31 which also forms a part of the housing 2.
- a fluid inlet also referred to as a pressure inlet or a fluid passage
- a system-side pressure fluid brake fluid
- the actuator 1 is connected to the system side at the mounting portion 13, and the pressure on the system side is introduced from the inlet 15 to the inflow chamber 9.
- An annular sliding member (also referred to as a vibration damping ring) 16 is mounted on the outer peripheral side of the other end of the bellows 6 fixed to the end member 7 or on the outer peripheral side of the end member 7.
- the sliding member 16 slides with its outer periphery against the inner peripheral surface of the shell 3 when the end member 7 moves during the expansion / contraction operation of the shell 3. Therefore, the guide by the sliding of the sliding member 16 causes the end member 7 to move in parallel with the inner peripheral surface of the shell 3 and also causes the rose 6 to expand and contract in parallel with the inner peripheral surface of the shell 3, thereby causing the end member 7 to expand and contract.
- the member 7 or the bellows 6 is prevented from coming against the inner peripheral surface of the shell 3.
- the sliding member 16 prevents the pressure inflow chamber 9 from being divided into a space 9 a on the outer peripheral side of the bellows 6 and a space 9 b on the lower side of the end member 7 in the figure.
- the moving member 16 is provided with a pressure communication portion (not shown).
- a chamber forming member (also referred to as a seal plate) 17 is fixed inside the end wall 3 a of the shell 3 and the port member 31, and the chamber forming member 17 and A chamber 18 and a throttle (also referred to as a nozzle or orifice) 19 are provided between the end wall 3 a of the shell 3 and the port member 31.
- an elastic seal (also referred to as a first elastic seal) 20 is provided on the chamber forming member 17 so that the end member 7 of the operating member 5 comes into contact with or separates during the operation thereof.
- a second elastic seal 33 for sealing between the chamber-forming member 17 and the shell 3 is provided.
- the forming member 17 is formed in an annular shape with a predetermined metal, 1 06646
- annular inner peripheral flat portion 17b integrally formed radially outward from the end wall 3a end of the inner peripheral cylindrical portion 17a, and an inner peripheral flat portion
- An outer peripheral cylindrical portion 17c integrally formed from the outer peripheral end portion of the 17b toward the end member 7 direction, and a radially outward direction from the end member 7 side end portion of the outer peripheral cylindrical portion 17c.
- a third cylindrical portion 17f integrally formed from the outer peripheral end of the outer peripheral flat portion 17d in the direction of the end wall 3a.
- Inner cylinder 7 f is fixed to the shell 3 in a state where the lower end face of the port member 31 is in contact with the inner surface of the port member 31 or the inner surface of the end wall 3 a of the seal 3.
- the fixing structure will be described later.
- the inner peripheral space of 17a is a communication part 21 that communicates the pressure inflow chamber 9 and the fluid inlet 15 with each other.
- the chamber 18 is formed by the outer cylindrical portion 17c, the outer flat surface portion 17d and the third cylindrical portion 17f of the chamber forming member 17 and the end wall portion 3a of the seal 3 and the port member 31. It is formed as an annular space between them (chamber volume: 8 cc for example).
- the throttles 19 are provided as grooves or notches on the inner surface of the port member 31 so that the fluid inlet 15 and the chamber 18 communicate with each other. (E.g., four equally distributed, 3 mm wide, 1.5 mm deep).
- the elastic seal 20 is formed by a combination of an inner peripheral side seal (also referred to as a first seal) 22 and an outer peripheral side seal (also referred to as a second seal) 23 formed of a predetermined rubber-like elastic material.
- the two seals 22 and 23 are respectively configured as follows.
- the inner peripheral side seal 22 is an annular space 17 e surrounded by the inner peripheral cylindrical portion 17 a, the inner peripheral flat portion 17 b and the outer peripheral cylindrical portion 17 c in the chamber forming member 17.
- the end member 7 of the operating member 5 has a lip end 22a of a double structure which comes into contact with and separates from the inner surface when the member is operated.
- the outer peripheral side seal 23 is vulcanized and bonded to the end face 7 side end face of the outer peripheral flat portion 17 d of the chamber one forming member 17, and the end member 7 of the operating member 5 comes into contact with and separates during the operation. It has a double-ended loop end 23a.
- the second elastic seal 33 is constituted by a combination of a lip-shaped third seal 34 and a fourth seal (also referred to as an outer peripheral rubber portion) 35 formed of a predetermined rubber-like elastic material. 4 and 35 are respectively configured as follows.
- the third seal 34 is vulcanized and adhered to the outer peripheral edge of the end member 7 side end surface of the outer peripheral flat portion 17 d of the chamber forming member 17, and the inner surface of the peripheral wall portion 3 d of the shell 3. It has a loop end that always contacts the
- the fourth seal 35 is vulcanized and bonded to the outer peripheral surface of the third cylindrical portion 17 f of the chamber-forming member 17, and has a lip end that is always in contact with the inner surface of the peripheral wall 3 d of the shell 3. have.
- the inner peripheral seal 22 and the outer peripheral seal 23 are integrally formed via a coating portion 25, and the outer peripheral seal 23 and the third seal are formed.
- 3 4 is integrally formed via a coating 36.
- the third seal 34 and the fourth seal 35 are also integrally formed via the coating 37. Therefore, the inner seal 22, the outer seal 23, the third seal 34, and the fourth seal 35 are all integrally formed, and the elastic seal 20 and the second elastic seal 3 are formed integrally. 3 is also integrally molded.
- the chamber-forming member 17 in which the elastic seal 20 and the second elastic seal 33 are vulcanized and bonded is pressed into the inside of the shell 3, and at this time, the outer peripheral surface of the third cylindrical portion 17f
- the chamber-forming member 17 is fixed inside the peripheral wall 3d of the shell 3 by the press-fit allowance by which the fourth seal 35 of the second elastic seal 33, which is vulcanized and adhered to the shell 3, is radially compressed. Further, the following fixing structure is provided so that the chamber forming member 17 will not be lifted from the end wall portion 3a of the shell 3 and the port member 31 due to a differential pressure or the like generated in the restrictor 19. Have been.
- a cylindrical insertion fixing portion 40 inserted into the inner peripheral side of the inner peripheral cylindrical portion 17 a of the chamber one forming member 17 is integrally formed upward on the upper surface of the port member 31 in the housing 2,
- the inner peripheral cylindrical portion 17a of the chamber-forming member 17 is fitted to the outer peripheral side of the cylindrical insertion fixing portion 40 with a predetermined fitting margin. This mating Although it is a relatively strong fitting between metals, it is reinforced by caulking if necessary.
- the cylindrical insertion fixing portion 40 is provided with a notched communication portion 41 in accordance with the arrangement of the throttle 19 in order to make the inner peripheral space communicate with each of the throttles 19. (For example, four equal distributions). Therefore, the cylindrical insertion fixing portion 40 is formed so that the upper end portion is divided in the circumferential direction by the cutout communication portion 41, and is pressed so as to be bent radially outward after fitting the divided pieces. By plastically deforming, the fitting force can be increased.
- the chamber 18 and the throttle 19 are not the actuating member 5 as in the above-mentioned conventional technology, but the channel 3 fixed inside the shell 3 and the port member 31 in the housing 2. Since the bellows 6 is provided between the end wall 3 a of the shell 3 and the port member 31 and the port member 31, it is not necessary to use a large-capacity bellows 6 unlike the above-mentioned conventional technology. In addition, the entire inner diameter of the shell 3 can be used for forming the chamber 18 as shown in the figure, so that the height of the shell 3 or the housing 2 can be kept relatively small. . Therefore, from these facts, it is possible to make the entire accumule 1 smaller than the conventional technology.
- the chamber-forming member 17 is fixed to the shell 3 of the housing 2 by press-fitting and fitting to the insertion fixing portion 40 instead of welding as in the above-described conventional technique, the accumulator 1 Although the chamber-forming member 17 is provided, the number of welds for this is not increased. Therefore, accumure
- the manufacturing in the evening 1 can be made easier 3It can be easier than in the case of the conventional technology.
- the elastic member 20 with which the operating member 5 contacts and separates during the operation is provided in the chamber-forming member 17, the sealing action of the elastic seal 17 causes the operation of the accumulator 1 to operate.
- the pressure in the pressure inflow chamber 9 that is, the pressure on the system side becomes equal to or lower than the sealing gas pressure
- the pressure in the pressure inflow chamber 9 can be maintained at a predetermined value or more. Therefore, it is possible to prevent the bellows 6 from expanding and being damaged due to the pressure difference between the inside and outside. (When the pressure in the pressure inflow chamber 9 decreases, the operating member 5 operates and the end member 7 becomes elastic.
- the inner peripheral seal 22 and the outer peripheral seal 23 of the seal 20 are in close contact with each other, and the respective parts are sealed, so that the pressure inflow chamber 9 partitioned into two inner and outer chambers by the outer peripheral seal 23 is provided. And the pressure sealing chamber 8 balance the pressure, preventing the bellows 6 from being damaged).
- the elastic seal 20 is composed of a combination of the inner peripheral seal 22 and the outer peripheral seal 23, and has high safety and reliability because it is a double seal. Further, since the elastic seal 20 is integrally formed with the chamber forming member 17 by vulcanization bonding, the chamber forming member 17 and the elastic seal 20 can be collectively handled as one part. it can.
- cylindrical insertion fixing portion 40 described above and the fixing structure by this may be as follows.
- a projection 42 is provided radially outward on the outer peripheral surface of the distal end (upper end) of the cylindrical insertion fixing portion 40, and as shown in FIG.
- the protrusions 42 are pressed against the inner peripheral surface of the inner peripheral cylindrical portion 17a of the chamber forming member 17 to make it harder to come off.
- a wedge-shaped hook 43 is provided on the outer peripheral surface of the distal end portion (upper end portion) of the cylindrical insertion fixing portion 40 radially outward, as shown in Fig. 13.
- the wedge-shaped hook 43 is pressed against the inner peripheral surface of the inner cylindrical portion 17a of the chamber forming member 17 so as to make it difficult to come off.
- the height of the distal end (upper end) of the cylindrical insertion fixing portion 40 is set at the distal end (upper end) of the inner peripheral cylindrical portion 17 a of the chamber-forming member 17.
- a protrusion or wedge-shaped hook (in the figure, a wedge-shaped hook 4 3) is formed radially outward on the outer peripheral surface of the distal end of the cylindrical insertion fixing portion 40. ) Is provided, and the protrusion or wedge-shaped catch 43 is engaged with the tip of the inner peripheral cylindrical portion 17a to make it hard to come off.
- the height of the distal end (upper end) of the cylindrical insertion fixing portion 40 is set at the tip of the inner peripheral cylindrical portion 17 a of the chamber forming member 17 ( (Upper end) so that it is higher than the height position.
- Lid member 4 High tensile drawing material, drawing
- Plug member 1 1 Cold rolled material, drawing
- Metal bellows 6 Material example ' ⁇ ⁇ SUS
- Bellows holder 32 Material example ⁇ ⁇ ⁇ SUS
- End member 7 Material example ⁇ ⁇ ⁇ S U S
- N 2 gas Preload 100 kg / cm 3
- the present invention has the following effects. That is, first, in the accumulator according to the first aspect of the present invention having the above-described configuration, since the chamber and the throttle are provided in the housing, the chamber and the throttle use the vibration damping effect. Vibration noise such as the goo noise can be suppressed, and the chamber and the throttle are not working members as in the prior art, but are formed by a chamber forming member fixed inside the housing and a fluid inlet. Since the bellows is provided between the end wall of the provided housing and the housing, it is not necessary to use a large-capacity bellows as in the prior art. Therefore, the size of the accumulator can be reduced.
- the housing-forming member is not welded to the housing, as in the prior art, but is not welded means such as fitting, press-fitting or caulking.
- the number of welds does not increase even if the chamber is provided inside the housing. Therefore, manufacture of the accumulator can be facilitated.
- the chamber forming member is not welded to the housing as in the prior art, but is a projection-shaped retaining engagement portion provided on the inner surface of the housing. The number of welds does not increase even if the chamber is provided inside the housing. Therefore, manufacture of the accumulator can be facilitated.
- the chamber forming member is fixed to the housing by a retaining member such as a retaining ring fixed to the inner surface of the housing, not by welding as in the prior art. Therefore, even if the chamber is provided in the housing, the number of welds does not increase. Therefore, manufacture of the accumulator can be facilitated.
- the chamber forming member is inserted into the outer periphery of the insertion fixing portion provided in the housing instead of welding the chamber forming member to the housing as in the prior art. Since it is fixed, the number of welds does not increase even if the chamber is provided in the housing. 1 06646 Therefore, production of accumulator can be facilitated.
- the chamber forming member is fixed to the housing at substantially the center of the plane, it is possible to prevent the chamber forming member from rising from the housing due to a pressure difference or the like generated in the throttle.
- the chamber forming member is inserted into the outer periphery of the insertion fixing portion provided in the housing instead of welding the chamber forming member to the housing, and the insertion fixing portion is inserted after the insertion. It is fixed by bending, caulking, crushing, etc., and deforming the tip, so that even if a chamber is provided in the housing, the number of welds does not increase. Therefore, manufacture of the accumulator can be facilitated.
- the chamber forming member is fixed to the housing at substantially the center of the plane, it is possible to prevent the chamber forming member from rising from the housing due to a pressure difference or the like generated in the throttle.
- the sealing action of the elastic seal allows the accumulator to operate in a short time.
- the pressure in the pressure inflow chamber can be maintained at a predetermined value or more even if the pressure in the pressure inflow chamber, that is, the pressure on the system side becomes equal to or lower than the sealed gas pressure. Therefore, it is possible to prevent the bellows from expanding and being damaged due to a difference in pressure between the inside and outside when the system pressure becomes equal to or less than the sealed gas.
- the seal and the end member forming the housing, and the parts of the bellows holder for holding the bellows are assembled together by welding.
- the welding operation of the part can be completed only once, and thus the assembling operation can be facilitated.
- FIG. 1 is a sectional view of an accumulator according to a first embodiment of the present invention
- FIG. 2 is an enlarged view of a main part of FIG. 1
- FIG. 3 is a sectional view of a second embodiment of the present invention.
- Accumulation 6646 is a cross-sectional view of a main part of a lathe
- FIG. 4 is a cross-sectional view of an accumulator according to a third embodiment of the present invention
- FIG. 5 is an enlarged view of a main part of FIG.
- FIG. 6 is a cross-sectional view of a main part of an accumulator according to a fourth embodiment of the present invention.
- FIG. 7 is a cross-sectional view of a main part of an accumulator according to a fifth embodiment of the present invention.
- FIG. 9 is a cross-sectional view of an accumulator according to a sixth embodiment of the present invention
- FIG. 9 is an enlarged view of a main part of FIG. 8
- FIG. 10 is an accumulator according to a seventh embodiment of the present invention.
- FIG. 11 is a cross-sectional view of the plug-in fixing portion.
- FIG. 11 is a cross-sectional view of a state where a chamber forming member is fitted to the outer periphery of the plug-in fixing portion.
- FIG. 12 is a sectional view of the eighth embodiment of the present invention.
- FIG. 13 is a cross-sectional view of the insertion fixing portion in the evening
- FIG. FIG. 14 is a cross-sectional view of a state where one forming member is fitted
- FIG. 14 is a cross-sectional view of a main part of an accumulator according to a ninth embodiment of the present invention
- FIG. 15 is a cross-sectional view of the tenth embodiment of the present invention.
- FIG. 16 is a cross-sectional view of a main part of the accumulator
- FIG. 16 is a cross-sectional view of a main part of an accumulator according to an eleventh embodiment of the present invention.
- FIG. 16B is a cross-sectional view showing a state before deformation
- FIG. 16B is a cross-sectional view showing a state after the tip of the insertion fixing portion is deformed.
- FIG. 18 is a cross-sectional view of an accumulator according to a conventional example.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60118573T DE60118573T2 (de) | 2000-08-09 | 2001-08-02 | Druckspeicher |
US10/333,870 US6848755B2 (en) | 2000-08-09 | 2001-08-02 | Accumulator |
EP01955556A EP1308634B1 (en) | 2000-08-09 | 2001-08-02 | Accumulator |
AU2001277697A AU2001277697A1 (en) | 2000-08-09 | 2001-08-02 | Accumulator |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000240509 | 2000-08-09 | ||
JP2000-240509 | 2000-08-09 | ||
JP2000314555 | 2000-10-16 | ||
JP2000-314555 | 2000-10-16 | ||
JP2001004546 | 2001-01-12 | ||
JP2001-4546 | 2001-01-12 | ||
JP2001-141028 | 2001-05-11 | ||
JP2001141028A JP2002276604A (ja) | 2000-08-09 | 2001-05-11 | アキュムレータ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002012731A1 true WO2002012731A1 (en) | 2002-02-14 |
Family
ID=27481518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/006646 WO2002012731A1 (en) | 2000-08-09 | 2001-08-02 | Accumulator |
Country Status (6)
Country | Link |
---|---|
US (1) | US6848755B2 (ja) |
EP (1) | EP1308634B1 (ja) |
JP (1) | JP2002276604A (ja) |
AU (1) | AU2001277697A1 (ja) |
DE (1) | DE60118573T2 (ja) |
WO (1) | WO2002012731A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004085853A1 (de) * | 2003-03-25 | 2004-10-07 | Hydac Technology Gmbh | Kolbenspeicher |
DE10320373A1 (de) * | 2003-05-07 | 2004-12-02 | Lucas Automotive Gmbh | Gasdruckspeicher für eine Fahrzeugbremsanlage und mit einem Gasdruckspeicher ausgestattete Fahrzeugbremsanlage |
US20220042524A1 (en) * | 2018-09-14 | 2022-02-10 | Hydac Technology Gmbh | Bellows accumulator |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2004102009A1 (ja) * | 2003-05-16 | 2006-07-13 | Nok株式会社 | アキュムレータ |
JP4247612B2 (ja) * | 2003-09-25 | 2009-04-02 | Nok株式会社 | アキュムレータおよびアキュムレータ用スペーサー |
JP2005155785A (ja) * | 2003-11-26 | 2005-06-16 | Nok Corp | アキュムレータ |
US7152932B2 (en) * | 2004-06-14 | 2006-12-26 | Eaton Corporation | Fluid power accumulator using adsorption |
DE102005002433A1 (de) * | 2004-11-15 | 2006-05-18 | Continental Teves Ag & Co. Ohg | Membranspeicher |
US7493916B2 (en) * | 2005-12-12 | 2009-02-24 | Bosch Rexroth Corporation | Pressure vessel with accumulator isolation device |
US20080116742A1 (en) * | 2006-11-20 | 2008-05-22 | Lipski Mark C | Brake modulation device and method |
US7855024B2 (en) * | 2006-12-27 | 2010-12-21 | Proton Energy Systems, Inc. | Compartmentalized storage tank for electrochemical cell system |
DE102010015905A1 (de) * | 2010-03-10 | 2011-09-15 | Karl Storz Gmbh & Co. Kg | Elektromagnetischer Linear-Schrittmotor |
DE102010062267A1 (de) * | 2010-12-01 | 2012-06-06 | Robert Bosch Gmbh | Hydroaggregat einer hydraulischen Fahrzeugbremsanlage |
US8978766B2 (en) * | 2011-09-13 | 2015-03-17 | Schlumberger Technology Corporation | Temperature compensated accumulator |
DE102011117752A1 (de) * | 2011-11-05 | 2013-05-08 | Hydac Technology Gmbh | Hydrospeicher in Form eines Balgspeichers |
JP5932517B2 (ja) | 2012-06-26 | 2016-06-08 | イーグル工業株式会社 | アキュムレータ |
DE102012012971B4 (de) * | 2012-06-29 | 2024-08-08 | Zf Active Safety Gmbh | Dämpfungselement für eine Kraftfahrzeug-Hydraulikanlage |
JP2016524101A (ja) * | 2013-05-15 | 2016-08-12 | テックネティックス グループ, エルエルシーTechnetics Group, Llc | 高圧用途用デュアルベローズセパレータ |
WO2015015882A1 (ja) * | 2013-07-29 | 2015-02-05 | イーグル工業株式会社 | アキュムレータ |
WO2016158833A1 (ja) * | 2015-04-02 | 2016-10-06 | イーグル工業株式会社 | アキュムレータ |
DE102015012357A1 (de) * | 2015-09-18 | 2017-03-23 | Hydac Technology Gmbh | Hydrospeicher |
US11761507B2 (en) * | 2021-02-10 | 2023-09-19 | DRiV Automotive Inc. | Weight optimized bellow accumulator |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0265701U (ja) * | 1988-11-09 | 1990-05-17 | ||
JPH09242702A (ja) * | 1996-03-05 | 1997-09-16 | Nok Corp | アキュムレータ |
FR2751037A1 (fr) * | 1996-07-09 | 1998-01-16 | Jacquemot Andre | Procede de renovation de sphere oleopneumatique et sphere obtenue par ce procede |
JPH116572A (ja) * | 1997-06-18 | 1999-01-12 | Nok Corp | アキュムレータ |
JP2000186767A (ja) * | 1998-10-15 | 2000-07-04 | Nok Corp | 端面シ―ル |
JP2001020901A (ja) * | 1999-07-08 | 2001-01-23 | Nok Corp | アキュムレータ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2756792B2 (ja) | 1988-08-30 | 1998-05-25 | 東洋農機株式会社 | はつ土板ブラウの補助装置 |
JPH08121401A (ja) * | 1994-10-21 | 1996-05-14 | Nok Corp | アキュムレータ |
DE19519832B4 (de) * | 1995-05-31 | 2004-04-22 | Robert Bosch Gmbh | Hydrospeicher |
DE10003648A1 (de) * | 2000-01-29 | 2001-08-09 | Hydac Technology Gmbh | Hydropneumatischer Druckspeicher |
-
2001
- 2001-05-11 JP JP2001141028A patent/JP2002276604A/ja not_active Withdrawn
- 2001-08-02 AU AU2001277697A patent/AU2001277697A1/en not_active Abandoned
- 2001-08-02 DE DE60118573T patent/DE60118573T2/de not_active Expired - Fee Related
- 2001-08-02 EP EP01955556A patent/EP1308634B1/en not_active Expired - Lifetime
- 2001-08-02 US US10/333,870 patent/US6848755B2/en not_active Expired - Fee Related
- 2001-08-02 WO PCT/JP2001/006646 patent/WO2002012731A1/ja active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0265701U (ja) * | 1988-11-09 | 1990-05-17 | ||
JPH09242702A (ja) * | 1996-03-05 | 1997-09-16 | Nok Corp | アキュムレータ |
FR2751037A1 (fr) * | 1996-07-09 | 1998-01-16 | Jacquemot Andre | Procede de renovation de sphere oleopneumatique et sphere obtenue par ce procede |
JPH116572A (ja) * | 1997-06-18 | 1999-01-12 | Nok Corp | アキュムレータ |
JP2000186767A (ja) * | 1998-10-15 | 2000-07-04 | Nok Corp | 端面シ―ル |
JP2001020901A (ja) * | 1999-07-08 | 2001-01-23 | Nok Corp | アキュムレータ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1308634A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004085853A1 (de) * | 2003-03-25 | 2004-10-07 | Hydac Technology Gmbh | Kolbenspeicher |
DE10313241A1 (de) * | 2003-03-25 | 2004-10-21 | Hydac Technology Gmbh | Kolbenspeicher |
US7395838B2 (en) | 2003-03-25 | 2008-07-08 | Hydac Technology Gmbh. | Piston-type accumulator |
DE10320373A1 (de) * | 2003-05-07 | 2004-12-02 | Lucas Automotive Gmbh | Gasdruckspeicher für eine Fahrzeugbremsanlage und mit einem Gasdruckspeicher ausgestattete Fahrzeugbremsanlage |
DE10320373B4 (de) * | 2003-05-07 | 2009-01-15 | Lucas Automotive Gmbh | Gasdruckspeicher für eine Fahrzeugbremsanlage |
US20220042524A1 (en) * | 2018-09-14 | 2022-02-10 | Hydac Technology Gmbh | Bellows accumulator |
US11781569B2 (en) * | 2018-09-14 | 2023-10-10 | Hydac Technology Gmbh | Bellows accumulator |
Also Published As
Publication number | Publication date |
---|---|
JP2002276604A (ja) | 2002-09-25 |
US6848755B2 (en) | 2005-02-01 |
DE60118573T2 (de) | 2006-08-24 |
US20040056530A1 (en) | 2004-03-25 |
EP1308634B1 (en) | 2006-04-05 |
AU2001277697A1 (en) | 2002-02-18 |
DE60118573D1 (de) | 2006-05-18 |
EP1308634A1 (en) | 2003-05-07 |
EP1308634A4 (en) | 2005-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2002012731A1 (en) | Accumulator | |
US6286552B1 (en) | Accumulator and manufacturing process thereof | |
US8096324B2 (en) | Accumulator | |
US20100108168A1 (en) | Accumulator | |
US7318452B2 (en) | Accumulator | |
JPH02266101A (ja) | アキュムレータ | |
EP3306108B1 (en) | Metal bellows-type accumulator | |
US20020063024A1 (en) | Hydraulic shock absorber | |
US20180087539A1 (en) | Metal bellows type accumulator | |
CN112046457B (zh) | 制动系统阻尼设备 | |
US7810522B1 (en) | Accumulator | |
US11221051B2 (en) | Brake system damping device | |
JP2003156002A (ja) | アキュムレータ | |
US10253840B2 (en) | Cylinder apparatus | |
JP4018256B2 (ja) | 円筒型液封防振装置 | |
JP4956362B2 (ja) | アキュムレータ | |
JP5016453B2 (ja) | アキュムレータ | |
JP2000104702A (ja) | アキュムレータ及びその製造方法 | |
JPH0540321Y2 (ja) | ||
JPH0642139Y2 (ja) | 油圧シリンダのシール構造 | |
JP2003074503A (ja) | アキュムレータ | |
JP2009236168A (ja) | 負圧制御型流体封入式防振装置 | |
JP2023072141A (ja) | 排油ポンプ及び排油ポンプの組付方法 | |
WO2006054336A1 (ja) | 液封入式防振装置及び液封入式防振装置ユニット | |
JPH09229124A (ja) | 油圧緩衝器のオイルシール構造及び油圧緩衝器のガス封入方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2001955556 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2001955556 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10333870 Country of ref document: US |
|
WWG | Wipo information: grant in national office |
Ref document number: 2001955556 Country of ref document: EP |