CN102897160A - Master cylinder - Google Patents
Master cylinder Download PDFInfo
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- CN102897160A CN102897160A CN2012103744705A CN201210374470A CN102897160A CN 102897160 A CN102897160 A CN 102897160A CN 2012103744705 A CN2012103744705 A CN 2012103744705A CN 201210374470 A CN201210374470 A CN 201210374470A CN 102897160 A CN102897160 A CN 102897160A
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Abstract
The invention provides a master cylinder which can improve manufacturing efficiency. A flange portion (114) radially extending outwards is disposed at a front end side of an insertion portion (34). A connecting portion (28) has: a ring-shaped embedding convex portion (38) disposed at the front end side of the inner circumference surface of the connecting portion, the diameter of the connecting portion being larger than the outer diameter of the embedding convex portion (38); a middle diameter portion (39)which is disposed at a base end side of the embedding convex portion and has a diameter larger than that of the embedding convex portion; a large diameter portion (40) which is positioned at the base end side of the middle diameter portion and has a diameter larger than that of the middle diameter portion; a small diameter portion (41) which is disposed at a position opposite to the flange portion and has a diameter smaller than that of the embedding convex portion. A sealing component (13) has a base end portion (68) which abuts against the front end surface (35) of the connecting portion (28) and has a large diameter, a ring-shaped embedding concave portion (69) which is embedded with the embedding convex portion of the connecting portion, and a sealing cylinder portion (70) which is disposed at a side opposite to the base end portion on the embedding concave portion and abuts against the insertion portion and the middle diameter portion of the connecting portion.
Description
Technical field
The present invention relates to a kind of master cylinder from hydraulic pressure to the Of Wheel Brake Oil-Cylinders of vehicle that supply with.
Background technology
Supplying with to the Of Wheel Brake Oil-Cylinders of vehicle in the master cylinder of hydraulic pressure, existing and suppress to supply with the technology (for example with reference to patent documentation 1) that the fuel tank of working oil comes off from oil cylinder to oil cylinder.
Patent documentation 1:(Japan) JP 2001-158337 communique
Above-mentioned such when suppressing structure that fuel tank comes off from oil cylinder when adopting, be difficult to fuel tank is assembled on the oil cylinder, and may reduce the manufacturing efficient of master cylinder.
Summary of the invention
Therefore, the object of the invention is to improve the manufacturing efficient of master cylinder.
In order to reach above-mentioned purpose, first aspect is invented described master cylinder, and it has: piston slides and the oil cylinder of generation pressure; Supply with the fuel tank of working fluid to described oil cylinder; Be arranged on the described oil cylinder and connect the tubular connecting portion of described fuel tank; Be arranged on the described fuel tank and insert tubular insertion section in the described connecting portion; Be arranged between described connecting portion and the described insertion section and have elasticity and seal the sealing element of the tubular between described connecting portion and the insertion section, it is characterized in that, described insertion section has to the flange part of radial outside expansion in front, and described connecting portion has: the first inside diameter of the ring-type that the front of the side face that sets within it and diameter are larger than the external diameter of described flange part; Be arranged on base end side and diameter second inside diameter larger than the diameter of this first inside diameter of this first inside diameter; Be positioned at base end side and diameter three inside diameter larger than the diameter of this second inside diameter of this second inside diameter, described sealing element has: the base end part large with the diameter of the front end face butt of described connecting portion; Fitting portion with the chimeric ring-type of the first inside diameter of described connecting portion; Be arranged on this fitting portion with described base end part vertically on the position of an opposite side and with the sealed chamber section of the second inside diameter butt of described insertion section and described connecting portion.
Second aspect is invented described master cylinder, it is characterized in that, described sealing element is at its outer peripheral face, is provided with diameter than the large protrusion of diameter of sealing cylinder section at the leading section of described sealed chamber section.
The third aspect is invented described master cylinder, it is characterized in that, described the 3rd inside diameter of described connecting portion has to described the second inside diameter reducing diameter part of diameter reduction gradually.
Fourth aspect is invented described master cylinder, it is characterized in that, at least a portion of described protrusion is set to contact with described the second inside diameter under the use state.
Described master cylinder is invented in the 5th aspect, it is characterized in that, described connecting portion has footpath four inside diameter less than the diameter of described the first inside diameter, the 4th inside diameter be positioned at the base end side of described the 3rd inside diameter and be arranged on can be relative with described flange part the position on.
According to the present invention, can improve the manufacturing efficient of master cylinder.
Description of drawings
Fig. 1 is the lateral plan of main portion that represents the master cylinder of the first embodiment with section.
Fig. 2 is the local amplification sectional view of connecting portion of the master cylinder of expression the first embodiment.
Fig. 3 is the figure of sealing element of the master cylinder of expression the first embodiment, and Fig. 3 (a) is section drawing, and Fig. 3 (b) is front view.
Fig. 4 is the local amplification sectional view of insertion section of the master cylinder of expression the first embodiment.
Fig. 5 (a)～(c) is the local amplification sectional view of the number of assembling steps of the master cylinder that represents the first embodiment of the order according to (a)～(c).
Fig. 6 is the figure of sealing element of the master cylinder of expression the second embodiment, and Fig. 6 (a) is section drawing, and Fig. 6 (b) is front view.
Fig. 7 (a)～(d) is the local amplification sectional view of the number of assembling steps of the master cylinder that represents the second embodiment of the order according to (a)～(d).
Fig. 8 is the local amplification sectional view of connecting portion of the master cylinder of expression the 3rd embodiment.
Fig. 9 (a)～(b) is the local amplification sectional view of the number of assembling steps of the master cylinder that represents the 3rd embodiment of the order according to (a)～(b).
Description of reference numerals
12 fuel tanks
13,13A sealing element
17 oil cylinders
21,22 pistons
28,28B connecting portion
34 insertion sections
35 front end faces
38 fitting projection
39 central diameter sections
40,40B large-diameter portion
41,41B minor diameter part
53 conical surface sections (reducing diameter part)
68 base end parts
69 chimeric recesses
70,70A sealed chamber section
114 flange parts
131 protrusions
The specific embodiment
Below, the master cylinder of the embodiments of the present invention is described.
" the first embodiment "
With reference to Fig. 1～Fig. 5 the master cylinder of the first embodiment is described.As shown in Figure 1, this master cylinder has master cylinder main body 11, is installed in the sealing element 13,13 of a pair of rubber system in plastic fuel tank 12, the gap between sealing master cylinder main body 11 and the fuel tank 12 of the vertical direction upside of master cylinder main body 11 integratedly.Master cylinder main body 11 produces the operating oil pressure corresponding to the operational ton of not shown brake pedal, and it is supplied with to the Of Wheel Brake Oil-Cylinders that is arranged on plate disc brake on the wheel or drum brake mechanism etc.Fuel tank 12 stores working oil (working fluid) and as required it is supplied with to master cylinder main body 11.
Master cylinder main body 11 has the oil cylinder 17 that bottom tube-like is arranged, this oil cylinder 17 have bottom 15 and from the bottom 15 circumference along its axially extended cylinder section 16.This oil cylinder 17 is made of metals such as aluminum alloys, and so that length direction is followed the usual practice carries on vehicle such as the attitude of the fore-and-aft direction of vehicle.
Master cylinder main body 11 has: main piston (piston) 21, and it can be slidably inserted into a side opposite with the bottom 15 in the oil cylinder 17; Auxiliary piston (piston) 22, it can be slidably inserted into bottom 15 sides in the oil cylinder 17.In oil cylinder 17, bottom 15 and cylinder section 16 by auxiliary piston 22, oil cylinder 17 mark off secondary stress chamber 23.And in oil cylinder 17, the cylinder section 16 by auxiliary piston 22, main piston 21 and oil cylinder 17 marks off main pressure chamber 24.And, although not shown, but be provided with the interval forming portion that comprises spring between the bottom 15 of auxiliary piston 22 and oil cylinder 17, this interval forming portion is determined the interval between the bottom 15 of above-mentioned auxiliary piston 22 and oil cylinder 17 under the non-braking mode from the input of brake pedal not.In addition, also be provided with the interval forming portion that comprises spring between auxiliary piston 22 and main piston 21, this interval forming portion is determined the interval between above-mentioned auxiliary piston 22 and the main piston 21 under non-braking mode.
And, in master cylinder main body 11, when the operation by not shown brake pedal makes main piston 21 to auxiliary piston 22 Slideslip, the pressure rise of the main pressure chamber 24 in the oil cylinder 17.The Of Wheel Brake Oil-Cylinders transmission that the pressure of this rising is linked to the drg pipe arrangement with a system.In addition, by the slip of this main piston 21, make auxiliary piston 22 to bottom 15 Slideslips of oil cylinder 17 via not shown interval forming portion.Thus, the pressure rise of the secondary stress chamber 23 in the oil cylinder 17, and the Of Wheel Brake Oil-Cylinders transmission that this pressure is linked to the drg pipe arrangement with another system.That is, slide by making main piston 21 and auxiliary piston 22, oil cylinder 17 produces the pressure that transmits to Of Wheel Brake Oil-Cylinders.
Be provided with side by side a pair of connecting portion 28,28 that fuel tank 12 is connected with oil cylinder 17 on the oil cylinder 17.Above-mentioned connecting portion 28,28 is to be integrally formed in the axial midway location of a section 16 to the outstanding mode of the radial outside of cylinder section 16.Above-mentioned connecting portion 28,28 matches each other in the position of the circumferencial direction of cylinder section 16 and along the axial separate front and back ground formation of cylinder section 16, be formed with in the inboard along the connecting bore radially 29 of the cylinder section 16 of oil cylinder 17 respectively, thereby form along the tubular radially of the cylinder section 16 of oil cylinder 17.
An insertion section 34 of fuel tank 12 is connected with a connecting portion 28 of oil cylinder 17 via a sealing element 13.In addition, another insertion section 34 of fuel tank 12 is connected with another connecting portion 28 of oil cylinder 17 via another sealing element 13.Therefore, master cylinder main body 11 is accepted from the working oil of fuel tank 12 supplies by a pair of connecting portion 28,28 of its oil cylinder 17.A pair of sealing element 13,13 forms roughly tubular, and is arranged on separately between corresponding connecting portion 28 and its interior insertion section 34 of insertion.A pair of sealing element 13,13 has elasticity, the sealing separately connecting portion 28 and the gap between the insertion section 34.
An insertion section 34 is installed in structure on the connecting portion 28 of above-mentioned oil cylinder 17 via a sealing element 13 with via another sealing element 13 that the structure that another insertion section 34 is installed on another connecting portion 28 is identical.Therefore, below, with reference to Fig. 2～Fig. 5, a connecting portion 28, a sealing element 13, an insertion section 34 and their connected structure are elaborated.
The connecting portion 28 of oil cylinder 17 at first, is described.As shown in Figure 2, the open end of connecting portion 28 namely forms vertical with connecting bore 29 smooth circular with the front end face 35 of cylinder section 16 opposite ends.In addition, the cardinal extremity of cylinder section 16 sides of connecting portion 28 example bottom surface 36 forms the smooth circle vertical with connecting bore 29.
And the inner peripheral surface of connecting portion 28 has fitting projection 38, central diameter section 39, large-diameter portion 40, minor diameter part 41.Fitting projection 38 (the first inside diameter) is that front end face 35 sides form give prominence to the inside circular in the open side of connecting portion 28.Central diameter section 39 (the second inside diameter) is that base end side and fitting projection 38 arrange adjacently in axial cylinder section 16 sides of fitting projection 38, and has the internal diameter size larger than the internal diameter of fitting projection 38.Large-diameter portion 40 (the 3rd inside diameter) arranges adjacently in axial cylinder section 16 sides and the central diameter section 39 of central diameter section 39, and has the internal diameter size larger than the internal diameter of central diameter section 39.Minor diameter part 41 (the 4th inside diameter) arranges adjacently at axial cylinder section 16 sides and the large-diameter portion 40 of large-diameter portion 40, and it is less than the internal diameter size of any in fitting projection 38, central diameter section 39 and the large-diameter portion 40 to form internal diameter size.
Fitting projection 38 has front-end-cone face 44, front cylinder face 45, conelet facial 46 and step face 47.
Front-end-cone face 44 forms inner peripheral section from front end face 35 more to the less taper of cylinder section 16 side diameters, and extends to cylinder section 16 sides.Front cylinder face 45 extends to cylinder section 16 sides with certain diameter from the end edge portion of cylinder section 16 sides of front end conical surface section 44.Conelet face 46 forms end edge portion from cylinder section 16 examples of front barrel surface section 45 more to the larger taper of cylinder section 16 side diameters, and extends to cylinder section 16 sides.Step face 47 forms from the end edge portion of cylinder section 16 sides of conelet face 46 to radial outside circular with the certain width expansion.
Large-diameter portion 40 has conical surface section 53 (reducing diameter part), crooked face 54, conical surface section 55.
Base end side cylinder face 58 extends to cylinder section 16 sides with certain diameter from the end edge portion of cylinder section 16 sides of conical surface section 55.Therefore, the diameter of base end side cylinder face 58 is less than the diameter of middle cylinder face 50, and less than the diameter of front cylinder face 45, the diameter of minor diameter part 41 is less than the diameter of fitting projection 38.Base end side conical surface section 59 forms end edge portion from cylinder section 16 sides of base end side cylinder face 58 more to the less taper of cylinder section 16 side diameters, and extends to cylinder section 16 sides, links to each other with cardinal extremity face 36.
Outer circumferential side at the open end of connecting portion 28 is formed with fillet surface 60, and this fillet surface 60 is more larger to cylinder section 16 side diameters vertically from the end edge portion of the outer circumferential side of front end face 35.
In addition, above-mentioned front end face 35, fillet surface 60, front-end-cone face 44, front cylinder face 45, conelet face 46, step face 47, middle cylinder face 50, conical surface section 53, crooked facial 54, conical surface section 55, base end side cylinder facial 58 are all consistent with the central axis of base end side conical surface section 59.Therefore, the central axis of fitting projection 38, pars intermedia 39, large-diameter portion 40 and minor diameter part 41 is also all consistent, and its central axis is the central axis of connecting bore 29.
Then, the sealing element 13 of the rubber system that is in the state of nature before the insertion section 34 of namely inserting fuel tank 12 before chimeric with the connecting portion 28 of oil cylinder 17 described.As shown in Figure 3, sealing element 13 is tubular, and the bigger diameter end face 63 of an axial end and diameter form the even shape that launches along square with the axis direction than the path end face 64 of its little axial other end.
Outer peripheral face at sealing element 13 has: the circular base end part 68 that diameter is large; Circular chimeric recess 69 (fitting portion), it arranges adjacently with base end part 68 in the axial direction, and caves in to radially inner side in the minimum diameter mode less than the diameter of base end part 68.In addition, also have the sealed chamber section 70 of tubular, the example opposite with base end part 68 that it is arranged on chimeric recess 69 vertically adjacently, and diameter is larger and less than the diameter of base end part 68 than the minimum diameter of chimeric recess 69.
One distolateral cylinder face 73 extends to path end face 64 sides with certain diameter from the periphery edge of bigger diameter end face 63.One distolateral step face 74 forms from the end edge portion of path end face 64 sides of a distolateral cylinder face 73 to radially inner side circular with the certain width expansion.
At this, the minimum diameter of base end part 68 is larger than the external diameter of the open side end of connecting portion shown in Figure 2 28.That is, any in the diameter of a distolateral cylinder face 73 of base end part 68, a distolateral step facial 74 and the middle cylinder face 75 all external diameter than the front end face 35 of connecting portion 28 is large, and larger than the external diameter of fillet surface 60.
Crooked facial 79 from the end edge portion of the path side of middle step surface section 76 more extending to path end face 64 sides to the less mode of path end face 64 side diameters, and the shape in cross section that comprises the central axis of sealing element 13 is circular-arc.
Path barrel surface section 80 extends to path end face 64 sides with certain diameter from the end edge portion of crooked facial 79 path side.Thereby the diameter of path barrel surface section 80 is less than the diameter of a distolateral cylinder facial 73 and middle cylinder face 75.
Crooked facial 81 from the end edge portion of path end face 64 sides of path barrel surface section 80 more extending to path end face 64 sides to the larger mode of path end face 64 side diameters, and the shape in cross section that comprises the central axis of sealing element 13 is circular-arc.Other end side stage terrace section 82 forms from the end edge portion of crooked facial 81 path end face 64 sides to radial outside circular with the certain width expansion.
At this, the minimum outer diameter of chimeric recess 69 is larger than the minimum diameter of the fitting projection 38 of connecting portion shown in Figure 2 28.That is, the diameter of the path barrel surface section 80 of chimeric recess 69 is larger than the diameter of the front cylinder face 45 of fitting projection 38.In addition, the axial width of chimeric recess 69 is wider than the axial length of the fitting projection 38 of connecting portion 28.That is, the axial distance between the intermediate step face 76 of chimeric recess 69 and the other end side stage terrace section 82 is longer than front end face 35 and the axial distance between the step face 47 of connecting portion 28.
Be formed with the identical rib 85 of two external diameters, 86 and between them and the external diameter rib 87 less than their external diameter in sealed chamber section 70.Sealed chamber section 70 has the convex surface part 88 of the outside face that consists of rib 85, the convex surface part 89 that consists of the outside face of rib 87, the convex surface part 90 that consists of the outside face of rib 86, another distolateral barrel surface section 91, another distolateral conical surface section 92.
Convex surface part 90, to the less mode diameter reduction of path end face 64 side diameters, and is extended to path end face 64 sides with more with more after the larger mode enlarged of path end face 64 side diameters from the end edge portion of path end face 64 sides of convex surface part 88.The shape in the cross section of the central axis that comprises sealing element 13 of convex surface part 90 also is circular-arc.
Another distolateral barrel surface section 91 extends to path end face 64 sides with certain diameter from the end edge portion of path end face 64 sides of convex surface part 90.Another distolateral conical surface section 92 extends and links to each other with path end face 64 from the end of path end face 64 sides of another distolateral barrel surface section 91 more to be taper to the less mode of path end face 64 side diameters to path end face 64 sides.
The maximum outside diameter of sealed chamber section 70 is larger than the diameter of the central diameter section 39 of connecting portion 28.That is, the convex surface part 88 of sealed chamber section 70,90 external diameter are larger than the diameter of the middle cylinder face 50 of connecting portion 28.
The axial length of sealed chamber section 70 is longer than the axial length of the central diameter section 39 of connecting portion 28, and with central diameter section 39 and large-diameter portion 40 axial length altogether about equally.In other words, the axial length of sealed chamber section 70 is shorter than central diameter section 39, large-diameter portion 40 and minor diameter part 41 axial length altogether of connecting portion 28.Axial length between the step facial 47 that the other end side stage terrace section 82 of sealed chamber section 70 and the axial length between the path end face 64 equal connecting portion 28 and the intersection position of the elongated surfaces of the middle cylinder face 50 of conical surface section 55, and shorter than the axial length between the end of base end side cylinder face 58 sides of the step facial 47 of connecting portion 28 and conical surface section 55.
Be formed with in the interior perimembranous of sealing element 13 a plurality of, two roots 95,96 specifically.The inner peripheral surface of sealing element 13 has a distolateral conical surface section 99, one distolateral step face 100, distolateral crooked facial 101, one a distolateral cylinder face 102, the convex surface part 103 that consists of the outside face of rib 95, middle cylinder face 104, consists of the convex surface part 105 of the outside face of rib 96, another distolateral barrel surface section 106.
One distolateral conical surface section 99 forms inner peripheral section from bigger diameter end face 63 more to the less taper of path end face 64 side diameters, and extends to path end face 64 sides.One distolateral step face 100 forms from the end edge portion of path end face 64 sides of a distolateral conical surface section 99 to radially inner side circular with the certain width expansion.One distolateral crooked facial 101 from the inner peripheral section of a distolateral step face 100 more extending to path end face 64 sides to the less mode of path end face 64 side diameters, and the shape in cross section that comprises the central axis of sealing element 13 is circular-arc.One distolateral cylinder face 102 extends to path end face 64 sides with certain diameter from the end edge portion of path end face 64 sides of a distolateral conical surface section 99.
Another distolateral barrel surface section 106 extends to path end face 64 sides with the certain diameter identical with a distolateral cylinder facial 102 and middle cylinder facial 104 from the end edge portion of path end face 64 sides of convex surface part 105, and links to each other with path end face 64.
The bigger diameter end face 63 of sealing element 13, path end face 64, one distolateral cylinder face 73, one distolateral step face 74, middle cylinder face 75, intermediate step face 76, crooked facial 79, path barrel surface section 80, crooked facial 81, other end side stage terrace section 82, convex surface part 88, convex surface part 89, convex surface part 90, another distolateral barrel surface section 91, another distolateral conical surface section 92, one distolateral conical surface section 99, one distolateral step face 100, one distolateral crooked facial 101, one distolateral cylinder face 102, convex surface part 103, middle cylinder face 104, convex surface part 105, the central axis of another distolateral barrel surface section 106 is all consistent, and is the central axis of sealing element 13.The distolateral barrel surface of middle cylinder face 104, convex surface part 105 and another section 106 consists of the inner peripheral surface of sealed chamber sections 70.
Then, the insertion section 34 that is made of the rigidity synthetic resin higher than the rigidity of sealing element 13 is described.As shown in Figure 4, be formed with the upward housing recess 110 of depression at the lower surface of the container section 33 of fuel tank main body 31, and insertion section 34 is outstanding along the downward direction of vertical direction from the mediad of this housing recess 110.In addition, housing recess 110 has: with the circular bottom surface sections 111 of the central axis quadrature of insertion section 34, from the end edge portion of the large footpath side of bottom surface sections 111 for the cylinder face 112 of bottom surface sections 111 quadratures and certain diameter of extending downwards.
Crooked facial 117, the main cylinder face 118 of inner peripheral surface 116, the end, lock step face 120, lock cylinder face 121, front-end-cone facial 122 is all consistent with the central axis of front end face 119, and is the central axis of insertion section 34.The central axis of insertion section 34 is also consistent with the central axis of the bottom surface sections 111 of housing recess 110 and cylinder face 112, and with bottom surface sections 111 quadratures of housing recess 110.
At this, the axial length except flange part 114 scopes of insertion section 34, that is, and the axial length of the end crooked facial 117 and main cylinder face 118, in other words, the axial length between bottom surface sections 111 and the locking step face 120 is longer than the entire axial length of sealing element 13.In addition, the equal diameters of the distolateral barrel surface of the diameter of the main cylinder face 118 of insertion section 34 and an end of sealing element 13 example cylinder face 102, middle cylinder facial 104 and another section 106, and larger than convex surface part 103,105 minimum diameter.In addition, the external diameter of flange part 114 namely, locks the diameter of cylinder face 121 larger than the diameter of the distolateral barrel surface of a distolateral cylinder face 102 of sealing element 13, middle cylinder facial 104 and another section 106.In addition, the minimum diameter of the front-end-cone face 122 of flange part 114 is less than a distolateral crooked maximum gauge of facial 101 of sealing element 13.In addition, the maximum gauge of housing recess 110 is the i.e. equal diameters of a distolateral cylinder face 73 of maximum outside diameter of the base end part 68 of the diameter of cylinder face 112 and sealing element 13.
The diameter that the external diameter of the flange part 114 of insertion section 34 namely locks cylinder face 121 is that the diameter of front cylinder face 45 is little than the internal diameter of the fitting projection 38 of the ring-type of connecting portion 28.In other words, the fitting projection 38 of front that is arranged at the inner peripheral surface of connecting portion 28 forms the diameter ring-type larger than the external diameter of flange part 114.
Then, the connected structure to connecting portion 28, sealing element 13 and insertion section 34 describes according to its engagement step.
At first, shown in Fig. 5 (a), make sealing element 13 and connecting portion 28 chimeric.At this moment, make the sealed chamber section 70 of sealing element 13 chimeric in the mode (Parties め is for The も つ) of interference fit with central diameter section 39 and the large-diameter portion 40 of connecting portion 28, and make the fitting projection 38 of connecting portion 28 chimeric in the mode of interference fit with the chimeric recess 69 of sealing element 13.In addition, make front end face 35 butts of its base end part 68 and connecting portion 28.Specifically, front end face 35 butts of the intermediate step face 76 of sealing element 13 shown in Figure 3 and connecting portion 28 shown in Figure 2, the path barrel surface section 80 of sealing element 13 shown in Figure 3 and facial 45 butts of the front cylinder of connecting portion 28 shown in Figure 2, the other end side stage terrace section 82 of sealing element 13 shown in Figure 3 and facial 47 butts of the step of connecting portion 28 shown in Figure 2.In addition, the convex surface part 88 of sealing element 13 shown in Figure 3 and convex surface part 89 produce distortion, with facial 55 butts of the middle cylinder of connecting portion 28 shown in Figure 2,91 distortion of the distolateral barrel surface of the convex surface part 90 of sealing element 13 shown in Figure 3 and another section, with the conical surface section 53 of connecting portion 28 shown in Figure 2, crooked facial 54 and conical surface section 55 butts, conical surface section 55 butts of the distolateral conical surface of another of sealing element 13 shown in Figure 3 section 92 and connecting portion 28 shown in Figure 2.
Then,, the insertion section 34 of fuel tank main body 31 is inserted in the sealing element 13 that remains in connecting portion 28 to Fig. 5 (b), further arrive shown in Fig. 5 (c) such as Fig. 5 (a).At this moment, at first, insertion section 34 on the front-end-cone face 122 of the flange part 114 of the front shown in Fig. 5 (a) with facial 101 butts of a distolateral bending of sealing element 13, afterwards, the locking cylinder face 121 of flange part 114 contacts with distolateral crooked facial 101, one a distolateral cylinder face 102 of sealing element 13, convex surface part 103, middle cylinder face 104, convex surface part 105, another distolateral barrel surface section 106 in turn, on one side with these contact portions and near part thereof to radial outside crimp and to axial tension, Yi Bian carry out chimeric.At this moment, shown in Fig. 5 (b), allow the large-diameter portion 40 (three inside diameter) of sealing element 13 in the place ahead of central diameter section 39 (the second inside diameter) further to be out of shape to radial outside, the sliding resistance that flange part 114 is applied weakens.In addition, the part of the sealing element 13 of distortion is accommodated in the large-diameter portion 40 (the 3rd inside diameter) laterally because pushed by flange part 114, so can suppress to become the overhang to direction of insertion the place ahead of the resistance of flange part 114, according to this point, also can weaken the sliding resistance that flange part 114 is applied.Like this, in the present embodiment, owing to having a large-diameter portion 40 (the 3rd inside diameter), so even 34 flange part 114 is set in the insertion section, also can not occur being difficult to fuel tank 12 is assembled in situation on the master cylinder main body 11.
Then, when shown in Fig. 5 (c), making flange part 114 surpass sealing element 113, sealing element 13 and the mode close contact of insertion section 34 with interference fit.Namely, insertion section 34 is being inserted exactly the sealing element 13 that remains in connecting portion 28 when interior, the distolateral barrel surface of a distolateral cylinder face 102 of interior all sides of sealing element 13 shown in Figure 3, convex surface part 103, middle cylinder face 104, convex surface part 105 and another section 106 is with facial 118 butts of main cylinder of the mode of interference fit and insertion section 34 shown in Figure 4.At this moment, the central diameter section 39 of the sealed chamber section 70 of the outer circumferential side of sealing element 13 and connecting portion 28 and large-diameter portion 40 are with the mode butt of interference fit.
In addition, at this moment, shown in Fig. 5 (c), the base end part 68 of sealing element 13 is incorporated in the housing recess 110 of fuel tank main body 31.That is, bottom surface sections 111 butts of the bigger diameter end face 63 of sealing element 13 shown in Figure 3 and housing recess 110 shown in Figure 4, facial 112 butts of cylinder of a distolateral cylinder facial 73 of sealing element 13 shown in Figure 3 and housing recess 110 shown in Figure 4.
In addition, at this moment, shown in Fig. 5 (c), flange part 114 leaves the path end face 54 of sealing element 13, and overlaps with minor diameter part 41 axial locations of connecting portion 28 and radially relative.In other words, be arranged on can the position relative with flange part 114 for the minor diameter part 41 of connecting portion 28.In addition, the position that the position of flange 114 is inserted into sealing element 13 according to deflection and the insertion section 34 of base end part 68 and front and back change, according to different positions, may make the position of flange part 114 be in not the state radially relative with the base end side cylinder face 58 of the minor diameter part 41 of connecting portion 28, but, if insert insertion section 34 until utilize at least housing recess 110 and connecting portion 28 compression base end parts 68, flange part 114 is in the base end side cylinder face 58 of connecting portion 28 overlaps also radially relative state at axial location.
At this, in the technology that above-mentioned patent documentation 1 is put down in writing, front end at the connecting portion (lug boss) of master cylinder main body is provided with to the side-prominent claw of internal diameter, sealing element be provided with side-prominent to external diameter and with the axial inboard cylindrical portion that locks of claw, and the leading section in the insertion section of fuel tank (connection shank) is provided with to the flange part of outside diameter expansion, and makes axial inboard locking of this flange part and sealing element.In the situation that said structure, break away from from lug boss in order to limit the connection shank, need to increase the elongation of flange part, but, when increasing the elongation of flange part, need to make the sealing element that contacts with the inner peripheral surface of lug boss produce larger distortion, so that the assembleability of fuel tank and master cylinder main body descends, and then, make decrease in efficiency.Therefore, eccentric by making flange part in the technology that patent documentation 1 is put down in writing, the coming off during vacuum fill of particularly seeking restraint of labour oil, and improve assembleability.But, in the technology that patent documentation 1 is put down in writing, can fully limit hardly the connection shank and come off from lug boss.On the other hand, come off from lug boss in order to improve assembleability and to limit the connection shank, by pin fuel tank and master cylinder main body are linked, thereby fuel tank can be remained in the master cylinder main body, still, if use pin, then number of components increase, and number of assembling steps increase.
To this, the master cylinder of the first embodiment is on the connecting portion 28 of master cylinder main body 11, base end side in fitting projection 38 is provided with the diameter central diameter section 39 larger than its diameter, is provided with the diameter large-diameter portion 40 larger than the diameter of this central diameter section 39 at the base end side of this central diameter section 39.Thus, when the sealing element that locks to the radial outside flange part 114 that extends and the central diameter section 39 that utilizes connecting portion 28 13 of the insertion section 34 that makes fuel tank main body 31 is chimeric, if sealing element 13 is pushed by flange part 114, large-diameter portion 40 allows sealing elements 13 to radially larger distortion.Thus, weaken sealing element 13 with respect to the sliding resistance of insertion section 34.In addition, the part of distortion is incorporated in the large-diameter portion 40 laterally because sealing element 13 is pushed by flange part 114, so suppress the overhang to direction of insertion the place ahead as the resistance of flange part 114, according to this point, also weaken the sliding resistance that flange part 114 is applied.Therefore, even thereby the radially elongation that the increases flange part 114 restriction insertion section 34 such as when the working oil filling comes off from connecting portion 28, and also can realize the good assembleability of fuel tank 12 and oil cylinder 17, and can improve manufacturing efficient.Therefore, even do not adopt the structure of utilizing pin to link fuel tank 12 and oil cylinder 17, and employing also can limit insertion section 34 and come off from connecting portion 28 only by the structure that links in the connecting portions 28 is inserted via sealing element 13 in insertion section 34.
In addition, since connecting portion 28 above-mentioned large-diameter portion 40 more by base end side, can the mode relative with flange part 114 having the diameter minor diameter part 41 less than the diameter of fitting projection 38, so for example, even sealing element 13 is stretched more than the anticipation by flange part 114, also can limit sealing element 13 and enter between flange part 114 and the minor diameter part 41, can suppress the damage of sealing element 13.
In addition, because the large-diameter portion 40 of connecting portion 28 has the conical surface section 53 of diameter reduction gradually to central diameter section 39, so pressure of the working oil when utilizing filling operation oil, move to extracting direction the insertion section 34 of fuel tank main body 31, path end face 64 butts of flange part 114 and sealing element 13 and with sealing element 13 when extracting the direction extruding, the guiding of sealed chamber section 70 by conical surface section 53 produce distortion in the mode that moves to radially inner side and close its with insertion section 34 between the gap, contact and increasing friction force between raising and the insertion section 34.Thus, can further limit from connecting portion 28 and extract insertion section 34.
" the second embodiment "
Then, mainly describe with Fig. 7 master cylinder to the second embodiment centered by the part different from the first embodiment based on Fig. 6.In addition, the part identical with the first embodiment uses same title, prosign to represent.
In the second embodiment, use has the sealing element 13A of the sealed chamber section 70A different with respect to sealed chamber section 70 parts of the sealing element 13 of the first embodiment.The sealing element 13A of the second embodiment does not arrange the rib 86 of the first embodiment, but it is larger than the diameter of the 70A of sealed chamber section to be provided with diameter at the leading section of the 70A of sealed chamber section of its outer peripheral face, that is, and and than the large circular protrusion 131 of the diameter of rib 85.That is, the 70A of sealed chamber section has: the convex surface part 88 that consists of the outside face of rib 85; Consist of the convex surface part 89 of the outside face of rib 87; Consist of the step face 132 of the outside face of protrusion 131, crooked face 133 and conical surface section 134.
The maximum outside diameter of the 70A of sealed chamber section is that the maximum outside diameter of protrusion 131 is larger than the external diameter of the central diameter section 39 of connecting portion 28.In addition, when the volume of protrusion 131 is that the sealing of the inboard of V1, large-diameter portion 40 is kept out of the way spatial volume when being V2, be set as V1＜V2.And, axial length between the intermediate step face 76 of base end part 68 and the maximum outside diameter position of protrusion 131 is shorter than the axial length between the maximum inner diameter position of the front end face 35 of connecting portion 28 and large-diameter portion 40, axial length between the intermediate step face 76 of base end part 68 and the step face 132 of protrusion 131 than the front end face 35 of connecting portion 28 with, the axial length between the position, boundary of central diameter section 39 and large-diameter portion 40 is short.That is, the protrusion 131 of the 70A of sealed chamber section overlaps the position in the axial direction with the central diameter section 39 of connecting portion 28.
Then, the connected structure between connecting portion 28, sealing element 13A, the insertion section 34 is described according to its engagement step.
At first, shown in Fig. 7 (a), that sealing element 13A and connecting portion 28 is chimeric.At this moment, sealing element 13A makes the protrusion 131 of the 70A of its sealed chamber section and central diameter section 39 butts of connecting portion 28, makes the fitting projection 38 of connecting portion 28 recess chimeric with it 69 chimeric, front end face 35 butts of its base end part 68 and connecting portion 28.Specifically, front end face 35 butts of the intermediate step face 76 of sealing element 13A shown in Figure 6 and connecting portion 28 shown in Figure 2, the path barrel surface section 80 of sealing element 13A shown in Figure 6 and facial 45 butts of the front cylinder of connecting portion 28 shown in Figure 2, sealing element 13 shown in Figure 6 crooked facial 133 with facial 50 butts of middle cylinder of connecting portion 28 shown in Figure 2.
Then,, insertion section 34 insertions of fuel tank main body 31 are remained among the sealing element 13A of connecting portion 28 to Fig. 7 (b), further arrive shown in Fig. 7 (c), 7 (d) such as Fig. 7 (a).At this moment, at first, insertion section 34 on the front-end-cone face 122 of the flange part 114 of the front shown in Fig. 7 (a) with facial 101 butts of a distolateral bending of sealing element 13A, afterwards, the locking cylinder face 121 of flange part 114 contacts with the distolateral barrel surface of distolateral crooked facial 101, the one distolateral cylinder face 102 of sealing element 13A, convex surface part 103, middle cylinder face 104, convex surface part 105 and another section 106 successively, on one side with these contact portions and near part thereof to radial outside crimp and stretch vertically, Yi Bian carry out chimeric.So the 70A of sealed chamber section is chimeric with central diameter section 39 and large-diameter portion 40 shown in Fig. 7 (b) in the mode that mainly protrusion 131 is configured in the large-diameter portion 40.At this moment, the 70A of sealed chamber section that comprises protrusion 131 that allows sealing element 13A further is out of shape to radial outside at the large-diameter portion 40 in the place ahead of central diameter section 39, thereby weakens the sliding resistance that flange part 114 is applied.In addition, the 70A of sealed chamber section that comprises the protrusion 131 that is out of shape laterally because sealing element 13 is pushed by flange part 114 is accommodated in the large-diameter portion 40, therefore can suppress the overhang to direction of insertion the place ahead as the resistance of flange part 114, according to this point, also can weaken the sliding resistance that flange part 114 is applied.
Shown in Fig. 7 (c), when flange part 114 surpassed sealing element 13A, sealing element 13A and insertion section 34 were with the mode close contact of interference fit.34 when suitably being inserted into the sealing element 13A that remains in connecting portion 28 in the insertion section, and the distolateral barrel surface of the distolateral cylinder face 102 of sealing element 13A shown in Figure 6, convex surface part 103, middle cylinder face 104, convex surface part 105 and another section 106 is with facial 118 butts of main cylinder of the mode of interference fit and insertion section 34 shown in Figure 4.At this moment, shown in Fig. 7 (c), the central diameter section 39 of the 70A of sealed chamber section and connecting portion 28 and large-diameter portion 40 butts, but, according to the above-mentioned size relationship of protrusion shown in Figure 6 131 with connecting portion 28, under use state subsequently, its part contacts with central diameter section 39 at least, and remainder contacts with large-diameter portion 40.Namely, when assembling, by housing recess 110 and connecting portion 28 compression base end parts 68, even the state that temporarily exists whole protrusion 131 to contact with large-diameter portion 40, but subsequently, utilize elastic force to restore and make under the use state of position stability of fuel tank main body 31 at base end part 68, at least a portion of protrusion 131 is in the state that contacts with central diameter section 39.
Master cylinder according to the second embodiment, because the leading section at the 70A of sealed chamber section of sealing element 13A is provided with the diameter protrusion 131 larger than the diameter of the 70A of sealed chamber section, therefore when the working oil filling, utilize the pressure of working oil, move to extracting direction the insertion section 34 of fuel tank main body 31, when path end face 64 butts of flange part 114 and sealing element 13A and with sealing element 13 when extracting the direction extruding, the 70A of sealed chamber section with protrusion 131 moves and is out of shape to radially inner side according to the guiding of conical surface section 53, and close gap between itself and the insertion section 34, improve the contact that insertion section 34 is applied and further improve friction force.Thus, can limit from connecting portion 28 and extract insertion section 34.
In addition, contact with the central diameter section 39 of connecting portion 28 because at least a portion of protrusion 131 is arranged under the use state, so sealing element 13A namely is extruded to the direction that contacts with insertion section 34 from central diameter section 39 to radially inner side all the time.Thus, sealing element 13A can push insertion section 34 under the use state, and can be limited under the use state insertion section 34 is extracted from connecting portion 28.
" the 3rd embodiment "
Then, mainly describe with Fig. 9 master cylinder to the 3rd embodiment centered by the part different from the first embodiment based on Fig. 8.And the position identical with the first embodiment uses same title, prosign to represent.
In the 3rd embodiment, use the connecting portion 28 local different connecting portion 28B with large-diameter portion 40B and minor diameter part 41B with respect to the first embodiment.The large-diameter portion 40B of the connecting portion 28B of the 3rd embodiment and minor diameter part 41B substitute the conical surface section 55 of the first embodiment, and have crooked facial 141.
Crooked facial 141 form from the end edge portion of crooked facial 54 cylinder section 16 sides more to less circular-arc of cylinder section 16 side diameters and to the 16 sides extension of cylinder section, and the shape in cross section that comprises the central axis of connecting bore 29 is circular-arc.Crooked facial 141 radius of curvature is larger than crooked facial 54 radius of curvature, and forms more away from crooked facial 54 larger shapes.Crooked facial 141 with facial 58 parts that link to each other of base end side cylinder along connecting bore 29 and direction axial quadrature.In other words, crooked facial 141 are connected orthogonally with base end side cylinder face 58.
Then, the connection structure between connecting portion 28B, sealing element 13, the insertion section 34 is described according to its engagement step.
At first, in the same manner that sealing element 13 is chimeric with connecting portion 28B with the first embodiment.At this moment, shown in Fig. 9 (a), sealing element 13 makes its sealed chamber section 70 and central diameter section 39 and large-diameter portion 40B butt.
Then, to shown in 9 (b), in the same manner the insertion section 34 of fuel tank main body 31 be inserted into the sealing element 13 that remain in connecting portion 28B with the first embodiment such as Fig. 9 (a).At this moment, even more than 13 anticipations of the flange part of insertion section 34 114 stretching sealing elements, since with base end side cylinder face 58 orthogonally crooked crooked facial 141 with sealing element 13 butts, therefore can limit between the base end side cylinder face 58 that sealing element 13 enters flange part 114 and minor diameter part 41B.
Master cylinder according to the 3rd above embodiment, because the crooked face 141 of the large-diameter portion 40B side of minor diameter part 41B is to link to each other with base end side cylinder facial 58 with the mode of facial 58 quadratures of base end side cylinder, so when assembling, even for example sealing element 13 is stretched more than the anticipation by flange part 114, also can further limit this part and enter between flange part 114 and the minor diameter part 41B, and can further suppress the damage of sealing element 13.
According to above-mentioned embodiment, produce the oil cylinder of pressure being slided by piston, supply with the fuel tank of working fluid to described oil cylinder, be arranged on the described oil cylinder and connect the tubular connecting portion of described fuel tank, be arranged on the described fuel tank and insert tubular insertion section in the described connecting portion, be arranged between above-mentioned connecting portion and the above-mentioned insertion section and have elasticity and seal in the master cylinder that the tubular sealing element between these connecting portions and the insertion section consists of, described insertion section has at the flange part of front to the radial outside expansion, described connecting portion has: the first inside diameter of the ring-type that the front of the side face that sets within it and diameter are larger than the external diameter of above-mentioned flange part, be arranged on base end side and diameter second inside diameter larger than this first inside diameter of this first inside diameter, be positioned at base end side and diameter three inside diameter larger than this second inside diameter of this second inside diameter, described sealing element has: the base end part large with the diameter of the front end face butt of described connecting portion, fitting portion with the chimeric ring-type of the first inside diameter of described connecting portion, be arranged on this fitting portion with described base end part vertically on the position of an opposite side and with the sealed chamber section of the second inside diameter butt of described insertion section and described connecting portion.Thus, can reduce the sliding resistance that sealing element applies the insertion section.Therefore, even thereby the radially elongation restriction insertion section that increases flange part comes off from connecting portion, also can obtain good assembleability.In addition, because connecting portion more leans on base end side can the mode relative with flange part having the diameter minor diameter part less than the diameter of fitting projection large-diameter portion, even therefore for example sealing element is stretched more than the anticipation by flange part, also can limit this part and enter between flange part and the minor diameter part, can suppress the damage of sealing element.
In addition, because described sealing element is on its outer peripheral face, be provided with diameter than the large protrusion of diameter of sealing cylinder section at the leading section of described sealed chamber section, therefore can limit the insertion section and come off from connecting portion.
In addition, because described the 3rd inside diameter of described connecting portion has to described the second inside diameter reducing diameter part of diameter reduction gradually, therefore move to extracting direction with respect to connecting portion when the insertion section, and flange part with sealing element to extracting direction when extruding, sealing element moves and is out of shape to radially inner side according to the guiding of reducing diameter part, the contact that raising applies the insertion section improves friction force.Thus, can limit from connecting portion and extract the insertion section.
In addition, because at least a portion of described protrusion contacts with described the second inside diameter under the use state, so sealing element can push the insertion section under the use state, can be limited under the use state and extract the insertion section from connecting portion.In addition, in the respective embodiments described above, only represented to be connected with the connecting portion 28 of master cylinder and to prevent the example that comes off by sealing element 13 is connected insertion section 34 with fuel tank, but the present invention also goes for the master cylinder that use pin shown in the patent documentation 1 etc. connects master cylinder and fuel tank.Thus, even supposing when safeguarding etc. to forget inserts pin etc., also can prevent from extracting fuel tank from master cylinder.
Claims (5)
1. master cylinder, it has:
Piston slides and the oil cylinder of generation pressure;
Supply with the fuel tank of working fluid to described oil cylinder;
Be arranged on the described oil cylinder and connect the tubular connecting portion of described fuel tank;
The tubular insertion section that is arranged on the described fuel tank and inserts described connecting portion;
Be arranged between described connecting portion and the described insertion section and have elasticity and seal the sealing element of the tubular between described connecting portion and the insertion section, this master cylinder is characterised in that,
Described insertion section has to the flange part of radial outside expansion in front,
Described connecting portion has: the first inside diameter of the ring-type that the front of the side face that sets within it and diameter are larger than the external diameter of described flange part; Be arranged on base end side and diameter second inside diameter larger than the diameter of this first inside diameter of this first inside diameter; Be positioned at base end side and diameter three inside diameter larger than the diameter of this second inside diameter of this second inside diameter,
Described sealing element has: the base end part large with the diameter of the front end face butt of described connecting portion; Fitting portion with the chimeric ring-type of the first inside diameter of described connecting portion; Be arranged on this fitting portion with described base end part vertically on the position of an opposite side and with the sealed chamber section of the second inside diameter butt of described insertion section and described connecting portion.
2. master cylinder according to claim 1 is characterized in that,
Described sealing element is at its outer peripheral face, is provided with diameter than the large protrusion of diameter of sealing cylinder section at the leading section of described sealed chamber section.
3. master cylinder according to claim 1 is characterized in that,
Described the 3rd inside diameter of described connecting portion has to described the second inside diameter reducing diameter part of diameter reduction gradually.
4. master cylinder according to claim 1 is characterized in that,
At least a portion of described protrusion is set to contact with described the second inside diameter under the use state.
5. each described master cylinder in 4 according to claim 1 is characterized in that,
Described connecting portion has diameter four inside diameter less than the diameter of described the first inside diameter, the 4th inside diameter be positioned at the base end side of described the 3rd inside diameter and be arranged on can be relative with described flange part the position on.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011165319A JP5802466B2 (en) | 2011-07-28 | 2011-07-28 | Master cylinder |
| JP2011-165319 | 2011-07-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102897160A true CN102897160A (en) | 2013-01-30 |
| CN102897160B CN102897160B (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210374470.5A Active CN102897160B (en) | 2011-07-28 | 2012-07-30 | Master cylinder |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5802466B2 (en) |
| CN (1) | CN102897160B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109923016A (en) * | 2016-11-11 | 2019-06-21 | 大陆-特韦斯贸易合伙股份公司及两合公司 | The fluid container of pipe fitting with flow optimized |
| CN111565814A (en) * | 2018-01-16 | 2020-08-21 | 雅玛信过滤器株式会社 | Filter device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130572U (en) * | 1984-07-30 | 1986-02-24 | リズム自動車部品製造株式会社 | master cylinder |
| JP2001158337A (en) * | 1999-11-30 | 2001-06-12 | Tokico Ltd | Master cylinder |
| CN201907495U (en) * | 2010-12-07 | 2011-07-27 | 吉林汽车制动器厂 | Center valve type brake main cylinder assembly capable of matching vehicle body electronic stabilizing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5571964U (en) * | 1978-11-13 | 1980-05-17 | ||
| JPS5845161Y2 (en) * | 1979-05-10 | 1983-10-14 | 日産自動車株式会社 | Sealing material for master cylinder with separate reservoir |
| KR20090019178A (en) * | 2007-08-20 | 2009-02-25 | 현대모비스 주식회사 | Plunger typed master cylinder of brake system in vehicle |
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2011
- 2011-07-28 JP JP2011165319A patent/JP5802466B2/en active Active
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- 2012-07-30 CN CN201210374470.5A patent/CN102897160B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130572U (en) * | 1984-07-30 | 1986-02-24 | リズム自動車部品製造株式会社 | master cylinder |
| JP2001158337A (en) * | 1999-11-30 | 2001-06-12 | Tokico Ltd | Master cylinder |
| CN201907495U (en) * | 2010-12-07 | 2011-07-27 | 吉林汽车制动器厂 | Center valve type brake main cylinder assembly capable of matching vehicle body electronic stabilizing system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109923016A (en) * | 2016-11-11 | 2019-06-21 | 大陆-特韦斯贸易合伙股份公司及两合公司 | The fluid container of pipe fitting with flow optimized |
| US10988125B2 (en) | 2016-11-11 | 2021-04-27 | Continental Teves Ag & Co. Ohg | Fluid container comprising a flow-optimised connecting piece |
| CN111565814A (en) * | 2018-01-16 | 2020-08-21 | 雅玛信过滤器株式会社 | Filter device |
| CN111565814B (en) * | 2018-01-16 | 2023-01-06 | 雅玛信过滤器株式会社 | Filter device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5802466B2 (en) | 2015-10-28 |
| CN102897160B (en) | 2015-11-25 |
| JP2013028254A (en) | 2013-02-07 |
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