WO2017022604A1 - ダイアフラムダンパ装置及びその保持部材、並びにダイアフラムダンパ装置の製造方法 - Google Patents
ダイアフラムダンパ装置及びその保持部材、並びにダイアフラムダンパ装置の製造方法 Download PDFInfo
- Publication number
- WO2017022604A1 WO2017022604A1 PCT/JP2016/072114 JP2016072114W WO2017022604A1 WO 2017022604 A1 WO2017022604 A1 WO 2017022604A1 JP 2016072114 W JP2016072114 W JP 2016072114W WO 2017022604 A1 WO2017022604 A1 WO 2017022604A1
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- WIPO (PCT)
- Prior art keywords
- diaphragm
- holding member
- diaphragm damper
- pair
- diaphragms
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000013013 elastic material Substances 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 13
- 230000010349 pulsation Effects 0.000 description 13
- 238000003466 welding Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 239000012530 fluid Substances 0.000 description 10
- 239000011324 bead Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/0454—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/049—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall multi-chamber units
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
- F16F2222/126—Fluid damping using gases
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2226/00—Manufacturing; Treatments
- F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
Definitions
- the present invention relates to a diaphragm damper device for absorbing pulsation used in a place where pulsation occurs, such as a high-pressure fuel pump, a holding member thereof, and a method of manufacturing the diaphragm damper device.
- a device in which a diaphragm damper device is provided in a fluid passage of a high-pressure fuel pump is known (hereinafter referred to as “prior art”; see, for example, Patent Document 1). .)
- the damper device provided in the fluid passage of the high-pressure fuel pump absorbs the pulsation of the pressure of the fuel discharged from the high-pressure fuel pump, reduces the pulsation width of the fuel pressure, and reduces the fuel injection amount. Is stabilizing.
- two diaphragm dampers 51 and 55 are arranged side by side in the vertical direction.
- the diaphragms 52 and 53 of the first diaphragm damper 51 are sandwiched between the first support member 61 and the third support member 63, and the diaphragms 56 and 57 of the second diaphragm damper 55 are connected to the second support member 62. It is clamped by the third support member 63.
- the diaphragms 52 and 53, the first support member 61, and the third support member 63 of the first diaphragm damper 51 are integrally fixed by welding at the outer peripheral side end of the first diaphragm damper 51.
- the diaphragms 56 and 57, the second support member 62, and the third support member 63 of the second diaphragm damper 55 are integrally fixed by welding at the outer peripheral side end of the second diaphragm damper 55.
- a diaphragm damper device 50 including a plurality of diaphragm dampers 51 and 55 As in the prior art shown in FIG. 7, the two diaphragm dampers 51 and 55 are moved into a pressure vessel filled with a mixed gas containing helium. The gas filling and the welding of the outer peripheral side end are performed simultaneously.
- the inside (gap ) To introduce high-pressure gas. Then, with the diaphragm 53 of the first diaphragm damper 51 and the diaphragm 56 of the second diaphragm damper 55 held by the third support member 63, the diaphragm 52 of the first diaphragm damper 51 is moved upward together with the first support member 61.
- the diaphragm 57 of the second diaphragm damper 55 is moved downward together with the second support member 62 so as to be brought into close contact with the counterpart diaphragm. While rotating the pair of diaphragms 52 and 53 in close contact with each other and rotating the pair of diaphragms 56 and 57 in close contact with each other, the outer peripheral end surfaces of the two diaphragm dampers 51 and 55 are irradiated with laser light to make the entire circumference. Weld.
- An object of the present invention is to provide a diaphragm damper device that is easy to manufacture and has a large effect of reducing fluid pressure pulsation, to provide a holding member that makes it possible to provide such a diaphragm damper device, and to It is providing the manufacturing method of the diaphragm damper apparatus using a holding member.
- a holding member for a diaphragm damper device that achieves the above-described object is a holding member for a diaphragm damper device that includes a plurality of diaphragm dampers arranged in an overlapping manner.
- Each diaphragm damper has a pair of diaphragms and a high-pressure chamber defined by the pair of diaphragms and filled with high-pressure gas, and the peripheral portions of the pair of diaphragms are overlapped and fixed to each other.
- the holding member is made of an elastic material, and is a band part capable of elastically tightening the side circumferences of the two adjacent diaphragm dampers, and hook parts provided on both sides of the band part, A hook portion that elastically clamps each of the two adjacent diaphragm dampers.
- the individually manufactured diaphragm damper can be integrally held by the holding member having the band portion and the hook portion. This facilitates the introduction of high-pressure gas to the diaphragm damper and the welding operation of the outer peripheral side end of the diaphragm damper, facilitating the manufacturing operation and preventing the manufacturing apparatus from becoming complicated. Furthermore, since the plurality of diaphragm dampers can be reliably held by the hook portions provided on both sides of the band portion, a diaphragm damper device having a large effect of reducing fluid pressure pulsation can be obtained.
- the band portion includes a plurality of mountain-shaped bent portions bent in a direction orthogonal to the longitudinal direction.
- the band part can wind and hold
- the band part has a narrow part formed so that a dimension in a width direction orthogonal to a longitudinal direction of the band part is smaller than a dimension of another part of the band part, and the bent part includes It is provided in the narrow part of the band part.
- a band part can be extended with comparatively small force.
- the band part has a plurality of holes provided apart from each other in the longitudinal direction of the band part, and the bent part is provided at a position overlapping the hole.
- a band part can be extended with comparatively small force.
- the hook part is provided so as to make a pair on both sides of the band part.
- a holding member can be made into a simple shape and it can attach easily irrespective of the attachment direction to a diaphragm damper.
- the band part has a first end provided with a locking part and a second end provided with the hook part configured to engage with the locking part.
- a diaphragm damper device that achieves the above-described object is a plurality of diaphragm dampers arranged in an overlapping manner, each diaphragm damper being defined by a pair of diaphragms and the pair of diaphragms, and being filled with a high-pressure gas
- a plurality of diaphragm dampers, and a holding member formed of an elastic material that integrally holds the plurality of diaphragm dampers, and the peripheral edges of the pair of diaphragms are overlapped and fixed to each other.
- a band portion that can elastically tighten a side periphery of two adjacent diaphragm dampers, and a hook that is provided on both sides of the band portion and elastically clamps each of the two adjacent diaphragm dampers And a holding member provided with a portion.
- the individually manufactured diaphragm damper can be integrally held by the holding member having the band portion and the hook portion. This facilitates the introduction of high-pressure gas to the diaphragm damper and the welding operation of the outer peripheral side end of the diaphragm damper, facilitating the manufacturing operation and preventing the manufacturing apparatus from becoming complicated. Furthermore, since the plurality of diaphragm dampers can be reliably held by the hook portions provided on both sides of the band portion, a diaphragm damper device having a large effect of reducing fluid pressure pulsation can be obtained.
- a method of manufacturing a diaphragm damper device that achieves the above-mentioned object includes forming a first diaphragm damper having a pair of diaphragms and a high-pressure chamber that is defined by the pair of diaphragms and sealed with high-pressure gas; Forming a second diaphragm damper having a diaphragm and a high-pressure chamber defined by the pair of diaphragms and filled with a high-pressure gas; and arranging the first diaphragm damper and the second diaphragm damper in an overlapping manner
- a holding member made of an elastic material and provided with a band portion and first and second hook portions provided on both sides of the band portion; and the first and second by the band portion of the holding member While elastically tightening the outer periphery of the second diaphragm damper, the first and second of the band portion By elastically clamping the respective outer end portions of the first and second diaphragm damper by click section,
- a plurality of diaphragm dampers can be individually manufactured, and the plurality of individually manufactured diaphragm dampers can be integrally held by the holding member. Therefore, when manufacturing a diaphragm damper device having a plurality of diaphragm dampers, the introduction of high-pressure gas to each diaphragm damper and the welding operation of the outer peripheral side end of the diaphragm damper are facilitated, and the manufacturing operation is facilitated. Complexity can be prevented.
- FIG. 2A is a developed view showing a state immediately after press molding of a holding member for holding the diaphragm damper used in the diaphragm damper device of FIG. 1, and FIG. 2B is a view of the holding member of FIG.
- FIG. 2C is a development view showing a state after processing, and FIG. 2C is a development view showing a side surface of the holding member in FIG.
- FIG. 3A is a plan view showing a mounting state of the holding member, and FIG. 3B is a cross-sectional view taken along the line 3B-3B in FIG. FIG.
- FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is the elements on larger scale of the diaphragm damper apparatus shown in FIG. 1, Comprising: It is a figure which shows the state which the hook part of the holding member clamped the outer peripheral side edge part of the diaphragm damper.
- FIG. 6A is a development view showing a state immediately after press molding of an alternative holding member used in the diaphragm damper device of FIG. 1
- FIG. 6B is a view after processing the holding member of FIG.
- FIG. 6C is a development view showing a side surface of the holding member in FIG. 6B. It is a figure explaining a prior art.
- a diaphragm damper device 10 shown in FIG. 1 is used in a high-pressure pump that pressurizes fuel supplied from a fuel tank by a reciprocating motion of a plunger and pumps the fuel toward an injector.
- the high-pressure pump includes a fuel chamber 2 that can accommodate fuel supplied from the outside.
- a fuel chamber 2 that can accommodate fuel supplied from the outside.
- the diaphragm damper device 10 is used to reduce pulsation generated in the fuel chamber 2 of such a high-pressure pump.
- the fuel chamber 2 is defined by an upper part 3 of a housing 1 of a high-pressure pump and an inner surface of a bottomed cylindrical cover 4 that is fixed on the upper part 3 of the housing 1. .
- the lower part of the cover 4 is closely joined to the housing 1.
- the upper side of the paper is called the upper side of the apparatus, and the lower side of the paper is called the lower side of the apparatus.
- a diaphragm damper device 10 is installed in the fuel chamber 2.
- the diaphragm damper device 10 includes two diaphragm dampers 11 and 12 which are arranged side by side in the vertical direction (arranged so as to overlap each other) in order to increase the effect of reducing the pressure pulsation of the fluid.
- each of the diaphragm dampers 11 and 12 includes a pair of disk-shaped diaphragms 15 and 15 and a high-pressure chamber 16 defined by the pair of disk-shaped diaphragms 15 and 15. Is enclosed.
- the outer sides of the pair of disk-shaped diaphragms 15 and 15 are covered with a pair of disk-shaped cover members 17 and 17, respectively.
- Diaphragm dampers 11 and 12 are manufactured separately, held in a state of being vertically aligned (overlapped state), and disposed at a position defined by the housing 1 and the inner surface of the cover 4.
- Each cover member 17 is provided with a plurality of holes 17b that allow fluid such as fuel to flow. External fluid can freely enter and exit through the hole 17b in the space between the cover member 17 and the diaphragm 15.
- the two diaphragm dampers 11 and 12 arranged in the state of being stacked in the vertical direction are integrally held by the holding member 20.
- the holding member 20 will be described in detail later.
- the two diaphragm dampers 11 and 12 are placed on the upper portion 3 of the housing 1 and are urged downward so as to be pressed against the housing 1 by a mounting member 7 and a coiled wave spring 6 mounted inside the cover 4. Thereby, it is fixed to the housing 1.
- the lower cover member 17 of the lower diaphragm damper 11 is formed in a shape that easily fits into the recess 5 of the upper portion 3 of the housing 1, but the function as the cover member is the same as other cover members.
- the pair of disk-shaped diaphragms 15 and 15 are formed in the same shape with a thin and flexible metal plate so that the central portions 15b and 15b have flexibility.
- the pair of disc-shaped cover members 17 and 17 are made of metal, support the diaphragms 15 and 15, and are thicker than the diaphragms 15 and 15.
- peripheral portions 15a and 15a of the pair of disc-shaped diaphragms 15 and 15 are overlapped with each other, and the overlapped peripheral portions 15a and 15a are sandwiched portions 17a at the peripheral portions of the pair of disc-shaped cover members 17 and 17, It is clamped by 17a.
- the high pressure gas is enclosed in the interior defined by the pair of diaphragms 15 and 15, and at the same time, the peripheral portions 15 a and 15 a of the pair of diaphragms 15 and 15 and the outer periphery of the sandwiching portions 17 a and 17 a of the pair of cover members 17 and 17
- the side end portions A are overlapped and continuously sealed and joined together by laser welding over the entire circumference in a closely contacted state, thereby sealing the high pressure chamber 16.
- the pair of cover members 17 and 17 are held by jigs (not shown), respectively, and the peripheral portions 15a and 15a of the pair of diaphragms 15 and 15 and the outer periphery of the pair of cover members 17 and 17
- the side end A is maintained in a close contact state.
- the holding member 20 made of an elastic material includes a band portion 20a and hook portions 20b and 20b provided to form a pair on both sides of the band portion 20a.
- the band portion 20 a is configured to be able to elastically tighten the side periphery 17 c of the upper cover member 17 of the lower diaphragm damper 11 and the side periphery 17 c of the lower cover member 17 of the upper diaphragm damper 12.
- the hook portions 20b and 20b are configured to elastically sandwich the outer peripheral side ends A of the diaphragm dampers 11 and 12, respectively.
- one hook portion 20b (first hook portion) provided below the band portion 20a elastically moves the outer peripheral side end A of the lower diaphragm damper 11 (first diaphragm damper).
- the other hook portion 20b (second hook portion) that is sandwiched and provided on the upper side of the band portion 20a elastically sandwiches the outer peripheral side end portion A of the upper diaphragm damper 12 (second diaphragm damper). ing.
- an elastic plate material is formed into a state shown in FIG. 2A by press molding.
- a pair of wide portions 20c ′ and 20c ′ are provided on both sides in the width direction of one end portion (left end portion) of the elongated band portion 20a, and the other end portion (right end)
- a pair of wide portions 20b 'and 20b' are provided on both sides in the width direction.
- the pair of wide portions 20c ′ and 20c ′ constitute the pair of locking portions 20c and 20c shown in FIGS. 2B and 2C, and the pair of wide portions 20b ′ and 20b ′.
- the pair of wide portions 20b ′ and 20b ′ are provided at two locations of the band portion 20a in addition to the right end portion, and a total of three pairs of wide portions 20b ′ and 20b ′ are provided at substantially equal intervals in the longitudinal direction.
- the pair of hook portions 20b and 20b is not limited to three, but may be provided at least at one location. However, it is preferable that the number of the hook portions 20b and 20b is large in order to securely hold the diaphragm dampers 11 and 12. Further, the hook portion may not be arranged so as to be paired with the band portion (in other words, at the same position in the longitudinal direction of the band portion). For example, the band portions may be arranged alternately (every other on the one side and the other side) as long as they are arranged equally on each side.
- the band portion 20a is provided with a plurality of holes 20d that allow the fluid to flow at substantially the center in the width direction and separated in the longitudinal direction.
- the press-molded plate material shown in FIG. 2 (a) is subjected to bending as shown in FIGS. 2 (b) and 2 (c).
- a mountain-shaped bent portion 20e that bends in a direction perpendicular to the longitudinal direction of the band portion 20a is provided at a central position in the longitudinal direction of each hole 20d of the band portion 20a.
- the bent portion 20e is bent so as to form a mountain shape in a side view of the band portion 20a.
- the bent portion 20e is for generating a longitudinal tension with respect to the band portion 20a when wound, and, for example, two diaphragm dampers 11 and 12 arranged in the vertical direction have a mutual diameter. When shifted in the direction, the function / effect is restored to restore the concentric state.
- the bent portion 20e is provided so as to overlap the position of each hole 20d, but is not necessarily limited thereto, and may be provided so as to be shifted from the position of each hole 20d.
- the bent portion 20e is provided to overlap the position of the hole 20d, the band portion 20a can be extended with a relatively small force.
- the band portion 20a has a width dimension perpendicular to the longitudinal direction of the band portion 20a in place of the hole 20d.
- the narrow portion 20n may be formed to be small.
- the bent portion 20e may be formed in the narrow portion 20n of the band portion 20a. Even in this case, the band portion 20a can be extended with a relatively small force.
- a pair of wide portions 20c ′ and 20c ′ on both sides in the width direction of the left end portion of the band portion 20a are bent outward at right angles, and the pair of locking portions 20c and 20c are connected to each other.
- each pair of hook portions 20b and 20b has outward portions 20f and 20f extending outward from both sides in the width direction of the band portion 20a, and outward portions 20f and 20f, respectively.
- the outer side portions 20g and 20g extending in the width direction of the band portion 20a from each other and away from each other, and the inward portions 20h and 20h extending inward from the outer side portions 20g and 20g.
- the shape formed by the outward portions 20f, 20f, the outer portions 20g, 20g and the inward portions 20h, 20h has a substantially triangular shape in a side view, and includes an insertion port 20i that can be opened inward.
- the two diaphragm dampers 11 and 12 arranged in the vertical direction are held in a state of being overlapped so that the centers in the radial direction coincide with each other.
- the holding member 20 is arranged at the center in the vertical direction of the two diaphragm dampers 11, 12, and below the upper cover member 17 of the lower diaphragm damper 11 and the upper diaphragm damper 12.
- the holding member 20 is wound around the side periphery 17c of the side cover member 17 so that the band portion 20a is along, and at the same time, the insertion openings 20i of the hook portions 20b and 20b are opened against the elastic force, and the hook portions 20b and 20b are opened. Is sandwiched so as to be wrapped from the outside with respect to the outer peripheral side ends A and A of the diaphragm dampers 11 and 12.
- the locking portions 20c, 20c at one end of the band portion 20a are tightened to the state where they exceed the hook portions 20b, 20b at the other end in the circumferential direction, and the left ends of the hook portions 20b, 20b
- the right ends 20k of the locking portions 20c and 20c are brought into contact with 20j.
- the bent portion 20e is slightly stretched, and the band portion 20a is wound around the side periphery 17c with an appropriate tension by the restoring force of the bent portion 20e.
- the hook portions 20b and 20b are in a state of elastically holding the outer peripheral side ends A and A of the diaphragm dampers 11 and 12.
- FIG. 3A shows a state in which the holding member 20 is wound.
- the locking portions 20c and 20c at one end of the band portion 20a connect the hook portions 20b and 20b at the other end in the circumferential direction.
- the right ends 20k of the locking portions 20c, 20c are brought into contact with the left ends 20j of the hook portions 20b, 20b.
- the band portion 20a is wound with an appropriate tension by the action of the plurality of bent portions 20e, the engagement state between the hook portions 20b and 20b and the locking portions 20c and 20c is not released.
- the diaphragm dampers 11 and 12 are elastically sandwiched between the hook portions 20b and 20b, the diaphragm dampers 11 and 12 are separated in the vertical direction or displaced in the radial direction. None do.
- FIG. 4 shows an engaged state between the hook portions 20b and 20b and the locking portions 20c and 20c.
- the locking portions 20c and 20c are engaged with the outward portions 20f and 20f of the hook portions 20b and 20b. I can see that
- the hook portions 20b and 20b are configured so that the outward portions 20f and 20f, the outer portions 20g and 20g, and the inward portions 20h and 20h of the hook portion 20b are in the outer peripheral end portion A when the outer peripheral end portions A and A are elastically sandwiched.
- the size is set so as not to contact the weld bead 21 formed during welding. For this reason, the hook parts 20b and 20b do not contact the weld bead 21.
- the hook parts 20b, 20b come into contact with the weld bead 21, the weld bead 21 is rubbed and worn, and the wear powder is scattered as a foreign matter and mixed into fuel or the like, and there is a concern that it will have an adverse effect.
- the hook portions 20b, 20b do not contact the weld bead 21, so that adverse effects due to generation of wear powder can be prevented.
- Example 1 has the following remarkable effects.
- the holding member 20 can integrally hold the diaphragm dampers 11 and 12 manufactured individually. That is, when manufacturing the diaphragm damper device 10, the plurality of diaphragm dampers 11 and 12 can be manufactured individually, and the individually manufactured diaphragm dampers 11 and 12 can be integrally held by the holding member 20. Therefore, compared with the case where the holding member 20 is not used, the introduction of high-pressure gas to the diaphragm dampers 11 and 12 and the welding operation of the outer peripheral side end A of the diaphragm damper are facilitated, and the manufacturing operation is facilitated. Complexity can be prevented. Furthermore, since the two diaphragm dampers 11 and 12 can be reliably held by the pair of hook portions 20b and 20b, the diaphragm damper device 10 having a large effect of reducing the pressure pulsation of the fluid can be obtained.
- the diaphragm dampers 11 and 12 can be wound and held with appropriate tension. .
- the band portion 20a can be extended with a relatively small force.
- the bent portion 20e is provided in a portion where the width of the band portion 20a is narrow (the narrow portion 20n)
- the band portion 20a can be extended with a relatively small force.
- the holding member 20 When the hook portion 20b of the holding member 20 is provided so as to form a pair on both sides of the band portion 20a, the holding member can be formed in a simple shape, and the directionality of attachment to the diaphragm dampers 11 and 12 is improved. And can be easily installed.
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Abstract
Description
上記構成によれば、バンド部は、ダイアフラムダンパを適度な張力で巻き付け、保持することができる。
好ましくは、前記バンド部は、該バンド部の長手方向に沿って離間して設けられた複数の穴を有し、前記屈曲部は、前記穴に重複する位置に設けられている。
好ましくは、前記フック部は前記バンド部の両側に対をなすように設けられている。
上記構成によれば、保持部材を単純な形状とすることができ、ダイアフラムダンパへの取付方向によることなく、簡単に取り付けることができる。
上述の目的を達成するダイアフラムダンパ装置は、重ねて配置された複数のダイアフラムダンパであって、各ダイアフラムダンパが、一対のダイアフラムと、前記一対のダイアフラムにより画定されるとともに高圧ガスが封入される高圧室とを有し、前記一対のダイアフラムの周縁部同士が重ね合わされて互いに固定されている、複数のダイアフラムダンパと、前記複数のダイアフラムダンパを一体的に保持する、弾性材料から形成された保持部材であって、隣接する2つの前記ダイアフラムダンパの側周を弾性的に締付け可能なバンド部と、前記バンド部の両側に設けられて隣接する2つの前記ダイアフラムダンパのそれぞれを弾性的に挟持するフック部とを備える保持部材と、を備える。
図1に示すダイアフラムダンパ装置10は、燃料タンクから供給される燃料をプランジャの往復動によって加圧してインジェクタに向かって圧送する高圧ポンプに使用されている。
図1に示すように、燃料チャンバ2は、高圧ポンプのハウジング1の上部3と、ハウジング1の上部3に被せられて固定された有底筒状のカバー4の内面とで区画形成されている。また、図示は省略するが、カバー4の下部はハウジング1に密に接合されている。
燃料チャンバ2内には、ダイアフラムダンパ装置10が設置されている。ダイアフラムダンパ装置10は、流体の圧力脈動の低減効果を大きくするため、上下方向に並んで配置された(互いに重なるように配置された)2個のダイアフラムダンパ11及び12を備える。
ダイアフラムダンパ11及び12は、それぞれ、一対の円盤状のダイアフラム15、15と、該一対の円盤状のダイアフラム15、15で画定される高圧室16とを有し、該高圧室16には高圧ガスが封入される。一対の円盤状のダイアフラム15、15の外側は、それぞれ、一対の円盤状のカバー部材17、17により覆われている。
ダイアフラムダンパ11及び12は、別個に製造され、上下方向に並んだ状態(重ねられた状態)に保持され、ハウジング1とカバー4の内面とで区画形成される位置に配置される。
保持部材20については、後に詳細に説明する。
一対の円盤状のダイアフラム15、15は薄肉で可撓性の金属板によって相互に同一形状に成形され、中央部15b、15bが可撓性を有するように形成されている。また、円盤状の一対のカバー部材17、17は、金属製であり、ダイアフラム15、15を支持するもので、ダイアフラム15、15より厚肉である。
次に、個々に製作された2個のダイアフラムダンパ11及び12が上下方向に重ねられた状態で保持部材20により保持される構成について説明する。
まず、弾性を有する板材をプレス成形により、図2(a)に示す状態に形成する。
図2(a)において、長尺状のバンド部20aの一方の端部(左端部)の幅方向の両側には、一対の幅広部20c’、20c’が設けられ、他方の端部(右端部)の幅方向の両側には、一対の幅広部20b’、20b’が設けられている。後述するように、一対の幅広部20c’、20c’は、図2(b)及び図2(c)に示す一対の係止部20c、20cを構成し、一対の幅広部20b’、20b’は、図2(b)及び図2(c)に示す一対のフック部20b、20bを構成する(図4も参照)。一対の幅広部20b’、20b’は、右端部の他にもバンド部20aの2個所に設けられ、合計で3対の幅広部20b’、20b’が長手方向にほぼ等しい間隔で設けられる。
また、フック部はバンド部に対し、対をなすように(言い換えれば、バンド部の長手方向において同じ位置に)配置されていなくてもよい。例えば、バンド部に対し、互い違い(一方側と他方側で一つおき)に配置されていてもよく、それぞれの側に等配になるように配置されていればよい。
図2(a)に示すプレス成形された板材は図2(b)及び図2(c)に示すように曲げ加工が施される。
屈曲部20eが穴20dの位置に重複して設けられた場合、比較的小さな力でバンド部20aを引き延ばすことができる。
上下方向に配列される2個のダイアフラムダンパ11、12は径方向の中心が一致するようにして重ね合わされた状態に保持される。
フック部20b、20bは、外周側端部A、Aを弾性的に挟持した状態において、フック部20bの外向部20f、20f、外側部20g、20g及び内向部20h、20hが外周側端部Aの溶接時に形成された溶接ビード21に接触しないような大きさに設定されている。このため、フック部20b、20bが溶接ビード21に接触することはない。
(1)保持部材20は、個々に製造されたダイアフラムダンパ11、12を一体的に保持することができる。すなわち、ダイアフラムダンパ装置10を製造する際、複数のダイアフラムダンパ11、12を個々に製造するとともに、これら個々に製造されたダイアフラムダンパ11、12を保持部材20によって一体的に保持することができる。したがって、保持部材20を用いない場合と比較して、ダイアフラムダンパ11、12に対する高圧ガスの導入及びダイアフラムダンパの外周側端部Aの溶接作業が容易となり、製造作業を容易にするとともに製造装置の複雑化が防止できる。さらに、一対のフック部20b、20bにより2個のダイアフラムダンパ11、12を確実に保持することができるので、流体の圧力脈動の低減効果の大きいダイアフラムダンパ装置10を得ることができる。
(4)屈曲部20eが穴20dの位置に設けられた場合、比較的小さな力でバンド部20aを引き延ばすことができる。
2 燃料チャンバ
3 ハウジングの上部
4 カバー
5 凹部
6 コイルドウェーブスプリング
7 取付部材
10 ダイアフラムダンパ装置
11 下方の(第1の)ダイアフラムダンパ
12 上方の(第2の)ダイアフラムダンパ
14 ゴム状弾性部材
15 ダイアフラム
15a 周縁部
15b 中央部
16 高圧室
17 カバー部材
17a 挟持部
17b 穴
17c 側周
20 保持部材
20a バンド部
20b フック部(第1、第2のフック部)
20c 係止部
20d 穴
20e 屈曲部
20f 外向部
20g 外側部
20h 内向部
20i 挿入口
20n 幅狭部
21 溶接ビード
A 外周側端部
Claims (8)
- 重ねて配置された複数のダイアフラムダンパを備えるダイアフラムダンパ装置用の保持部材であって、
各ダイアフラムダンパは、一対のダイアフラムと、前記一対のダイアフラムにより画定されるとともに高圧ガスが封入される高圧室とを有し、前記一対のダイアフラムの周縁部同士が重ね合わされて互いに固定されており、
前記保持部材は、弾性材料から形成されているとともに、
隣接する2つの前記ダイアフラムダンパの側周を弾性的に締付け可能なバンド部と、
前記バンド部の両側に設けられたフック部であって、隣接する2つの前記ダイアフラムダンパのそれぞれを弾性的に挟持するフック部とを備える、
ダイアフラムダンパ装置用の保持部材。 - 前記バンド部は、長手方向に直交する方向に屈曲する山形状の複数の屈曲部を備えている、
請求項1に記載のダイアフラムダンパ装置用の保持部材。 - 前記バンド部は、該バンド部の長手方向に直交する幅方向の寸法が前記バンド部の他の部位の寸法よりも小さく形成された複数の幅狭部を有し、
前記屈曲部は、前記バンド部の前記幅狭部に設けられている、
請求項2に記載のダイアフラムダンパ装置用の保持部材。 - 前記バンド部は、該バンド部の長手方向に沿って離間して設けられた複数の穴を有し、
前記屈曲部は、前記穴に重複する位置に設けられている、
請求項2に記載のダイアフラムダンパ装置用の保持部材。 - 前記フック部は前記バンド部の両側に対をなすように設けられている、
請求項1ないし4のいずれか一項に記載のダイアフラムダンパ装置用の保持部材。 - 前記バンド部は、係止部を備えた第1端と、前記係止部に係合するように構成された前記フック部を備えた第2端とを有する、
請求項1~5のいずれか一項に記載のダイアフラムダンパ装置用の保持部材。 - 重ねて配置された複数のダイアフラムダンパであって、各ダイアフラムダンパが、一対のダイアフラムと、前記一対のダイアフラムにより画定されるとともに高圧ガスが封入される高圧室とを有し、前記一対のダイアフラムの周縁部同士が重ね合わされて互いに固定されている、複数のダイアフラムダンパと、
前記複数のダイアフラムダンパを一体的に保持する、弾性材料から形成された保持部材であって、隣接する2つの前記ダイアフラムダンパの側周を弾性的に締付け可能なバンド部と、前記バンド部の両側に設けられて隣接する2つの前記ダイアフラムダンパのそれぞれを弾性的に挟持するフック部とを備える、保持部材と、
を備えるダイアフラムダンパ装置。 - ダイアフラムダンパ装置の製造方法であって、
一対のダイアフラムと、前記一対のダイアフラムにより画定され高圧ガスが封入された高圧室とを有する第1のダイアフラムダンパを形成することと、
一対のダイアフラムと、前記一対のダイアフラムにより画定され高圧ガスが封入された高圧室とを有する第2のダイアフラムダンパを形成することと、
前記第1のダイアフラムダンパ及び前記第2のダイアフラムダンパを重ねて配置することと、
弾性材料からなり、バンド部と前記バンド部の両側に設けられる第1及び第2のフック部とを備える保持部材を準備することと、
前記保持部材の前記バンド部によって前記第1及び第2のダイアフラムダンパの外周を弾性的に締付けるとともに、前記バンド部の前記第1及び第2のフック部によって前記第1及び第2のダイアフラムダンパの外周側端部のそれぞれを弾性的に挟持することによって、前記第1及び第2のダイアフラムダンパを一体的に保持することと、
を備えるダイアフラムダンパ装置の製造方法。
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JPWO2019221261A1 (ja) * | 2018-05-18 | 2021-06-10 | イーグル工業株式会社 | ダンパユニット |
US11346312B2 (en) | 2018-05-18 | 2022-05-31 | Eagle Industry Co., Ltd. | Damper unit |
WO2019221259A1 (ja) * | 2018-05-18 | 2019-11-21 | イーグル工業株式会社 | メタルダイアフラムダンパの取付構造 |
JP7074563B2 (ja) | 2018-05-18 | 2022-05-24 | イーグル工業株式会社 | ダンパ装置 |
US11261835B2 (en) | 2018-05-18 | 2022-03-01 | Eagle Industry Co., Ltd. | Damper device |
EP3816430A4 (en) * | 2018-05-18 | 2022-03-09 | Eagle Industry Co., Ltd. | SHOCK ABSORBER ASSEMBLY |
US11293391B2 (en) | 2018-05-18 | 2022-04-05 | Eagle Industry Co., Ltd. | Damper device |
US11326568B2 (en) | 2018-05-25 | 2022-05-10 | Eagle Industry Co., Ltd. | Damper device |
JPWO2019225627A1 (ja) * | 2018-05-25 | 2021-06-10 | イーグル工業株式会社 | ダンパ装置 |
EP3805548A4 (en) * | 2018-05-25 | 2022-02-16 | Eagle Industry Co., Ltd. | DAMPER DEVICE |
JP2020045849A (ja) * | 2018-09-20 | 2020-03-26 | 株式会社不二工機 | パルセーションダンパー |
US11999207B2 (en) | 2019-04-15 | 2024-06-04 | ILJIN USA Corporation | Air springs and methods for making the same |
US11433726B2 (en) * | 2019-04-15 | 2022-09-06 | ILJIN USA Corporation | Air springs and methods for making the same |
Also Published As
Publication number | Publication date |
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EP3330565A4 (en) | 2019-05-01 |
US20180202401A1 (en) | 2018-07-19 |
EP3330565A1 (en) | 2018-06-06 |
JP6691124B2 (ja) | 2020-04-28 |
CN107709821B (zh) | 2019-09-24 |
US10495041B2 (en) | 2019-12-03 |
CN107709821A (zh) | 2018-02-16 |
EP3330565B1 (en) | 2021-07-14 |
JPWO2017022604A1 (ja) | 2018-06-14 |
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