CN101239569B - Buffer for vehicle - Google Patents
Buffer for vehicle Download PDFInfo
- Publication number
- CN101239569B CN101239569B CN2008100071783A CN200810007178A CN101239569B CN 101239569 B CN101239569 B CN 101239569B CN 2008100071783 A CN2008100071783 A CN 2008100071783A CN 200810007178 A CN200810007178 A CN 200810007178A CN 101239569 B CN101239569 B CN 101239569B
- Authority
- CN
- China
- Prior art keywords
- outer tube
- fitting portion
- locating part
- water bumper
- periphery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 230000004323 axial length Effects 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000003466 welding Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000269799 Perca fluviatilis Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
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- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention provides a hydraulic buffer for vehicle, the fork component is fixed on the periphery of the outer tube lower of the hydraulic buffer. The fork component is composed of an embedding part embedded on periphery of the lower, and two branch parts branched from the embedding part. A stopping component for stopping the relative displacement of the embedding part and the lower is welded on the periphery of the lower. The stopping component has a central part, and a pair of side wings continuously extended from two ends of the central part to the circumferential direction of the outer tube. The axial length of each side wing part is less than the axial length of the central part. One side of the side wing part is abutting jointed with the embedding part, one side of the inverse side is welded on the periphery of the outer tube. Thus, the stopping component effectively supports the load of the outer tuber generated by the fork component by a shorter weld distance.
Description
Technical field
The present invention relates to limit the locating part of fork member displacement, this fork member fastening is in the outer tube periphery of buffer for vehicle.
Background technology
Japanese Patent office discloses double wish-bone arm type (double wishbone) suspension device for rolling stock that uses water bumper in the Japanese Patent JPH08-058331A of issue in 1996, issue in 1999 Japanese Patent JPH11-091325 number.
In these suspension device for rolling stock, water bumper be installed in vehicle vehicle body and and axletree bonded assembly lower shake-changing arm between.Owing to need avoid axletree, pull bar, connect water bumper and lower shake-changing arm by being called the two forked carriages of pitching member.
The fork member has fitting portion and a pair of branching portion, and this fitting portion is a tubular, and chimeric with the periphery of the outer tube lower end of water bumper, this a pair of branching portion extends downwards from fitting portion, and the branching portion front end is connected in lower shake-changing arm rotationally.In addition, on outer tube, also has the spring perch of supporting axle spring lower end, this axle spring supporting vehicle body.
Tare acts on water bumper, and in vehicle ' from lower shake-changing arm by the fork member transmit on top load be imported into water bumper.For fitting portion and the outer tube that does not make the fork member produces relative displacement in the axial direction because of these loads, locating part is set on outer tube.
Summary of the invention
With reference to Fig. 4, locating part 14 is made of the sheetmetal with circular cross-section, the periphery of the outer tube 10a lower end 11 by being fixedly welded on water bumper 10.Make the fitting portion 13 and locating part 14 butts of fork member 12, thus, the displacement upward of restriction fork member 12.
Locating part 14 is shorter with the circumferential lengths of the abutting part of the fitting portion 13 of fork member 12, then during top load, can not fully stop the shake displacement of fork member 12 with respect to water bumper 10 on bigger from 12 inputs of fork member.Its result locating part 14 might occur and deform and peel off from water bumper 10 lower ends 11, does not limit the distortion of fork member 12.
Locating part 14 is made the ring section, and the whole week that locating part 14 is welded on water bumper 10 upwards, strengthened locating part 14 from structure, what prevent to pitch member 12 shakes displacement and longitudinal travel, and can prevent that locating part 14 from peeling off from water bumper 10.But as if the welded limiting part 14 that makes progress in whole week at water bumper 10, then welding distance is elongated, might produce bigger welding deformation on outer tube 10a.In addition, also might make the power fluid in the water bumper 10 produce chemical changes such as oxidation owing to the heat affecting of welding.
Welding deformation can cause between the parts of water bumper 10 producing unnecessary gap, increase the harmful effects such as error between the size and design size when finishing.In addition, if because the chemical change of power fluid and produce insoluble greasy filth in power fluid then might make piston, leak free sliding in the water bumper worsen, the damping force characteristics of water bumper 10 is brought the influence that can't expect.
Therefore, the objective of the invention is to improve the structure that the outer tube that is welded in buffer for vehicle supports the locating part of fork member.
In order to reach above purpose, the present invention is a kind of vehicle water bumper, this water bumper be installed in vehicle vehicle body and and axletree bonded assembly lower shake-changing arm between, have outer tube, fork member, locating part; This fork member has fitting portion and branching portion, and this fitting portion is a tubular, and is chimeric with the periphery of outer tube, and this branching portion is two strands from fitting portion branch, and front end is connected with lower shake-changing arm; This locating part is fixed on the outer tube, is used to limit fitting portion at the relative displacement that axially reaches on the hand of rotation, it is characterized in that locating part has central portion and a pair of flank section, and the circumferencial direction to outer tube extends this a pair of flank section from the central portion two ends; The axial length of each flank section is less than the axial length of central portion; Flank section has the one side that is connected to fitting portion and is positioned at an opposite side, is welded on one side of outer tube periphery.
For detailed content of the present invention and other feature and advantage, will in the record of specification sheets back, describe, and expression in the accompanying drawings.
Description of drawings
Fig. 1 is the lateral plan of expression water bumper of the present invention.
To be expression comprise the lateral plan that water bumper is wanted the local section of portion from what observe with the direction of Fig. 1 quadrature to Fig. 2.
Fig. 3 is the water bumper of gained is dissectd in expression along the III-III line of Fig. 1 a horizontal cross.
Fig. 4 represents the figure with the water bumper of the similar conventional art of Fig. 1.
The specific embodiment
With reference to Fig. 1, the water bumper 2 that is provided with locating part 1 of the present invention is so-called multi-cylinder type water bumpers, the piston rod 2c that has outer tube 2a and give prominence to upward from outer tube 2a.
With reference to Fig. 3, cylinder (comprising cylinder, hydraulic actuating cylinder) 2b is arranged in the inboard arranged coaxial of outer tube 2a.Piston rod 2c with accommodate the not shown piston that is installed in the cylinder 2b and link.The inside of cylinder 2b is divided into bar side room and piston side room R1 by piston, and to the two indoor power fluides of enclosing respectively, the annular gap between cylinder 2b and outer tube 2a forms the supply chamber R shown in Figure 3 that has enclosed gas and power fluid.
Move vertically in cylinder 2b by piston, water bumper 2 stretches.Along with moving of piston, power fluid circulates between bar side room and piston side room R1, makes water bumper 2 produce the flexible dumping force of opposing by this circulating resistance.Supply chamber R has following function: accept to be equivalent to the power fluid that enters volume that piston rod 2c enters into cylinder 2b, and be equivalent to the power fluid that withdraws from volume that piston rod 2c withdraws from from cylinder 2b to cylinder 2b supply.
With reference to Fig. 2, dwindle the diameter of the lower end B of outer tube 2a, the diameter of lower end B that makes this outer tube 2a is fixed on lower end B periphery by welding with locating part 1 less than other section diameters of outer tube 2a.Below the locating part 1 of lower end B, along being formed with recess 2d with the water bumper 2 axial roughly directions of quadrature.
Locating part 1 is made of rectangle central portion 1a and a pair of flank section 1b, and this central portion 1a is along the outer peripheral face bending of outer tube 2a lower end B, and this a pair of flank section 1b extends along the periphery of outer tube 2a lower end B from the circumferencial direction two ends of central portion 1a respectively.The axial length of flank section 1b is less than the axial length of central portion 1a.Central portion 1a has outstanding projection 1c down.The bottom except projection 1c of central portion 1a and the bottom of flank section 1b are positioned on the same circular arc.
Axial both sides in the locating part 1, constitute the difference of height of central portion 1a and flank section 1b at place, the circumferencial direction two ends of central portion 1a are welded on the outer peripheral face of lower end B.Each flank section 1b have with the central axis of water bumper 2 roughly the top of quadrature with following, this top and following almost parallel.Bottom and the fitting portion 3a upper end butt of pitching member 3.The top is welded on the outer peripheral face of outer tube 2a lower end B.
Referring again to Fig. 3, about the central portion 1a of locating part 1 and the formed circular arc of each flank section 1b, promptly the end with the circumferencial direction of each flank section 1b is the circular arc at two ends, center O and circular arc two ends angulation θ that this arc length is set to water bumper 2 are below 180 °.In this embodiment, angle θ is made as about 170 °.By angle θ is set in below 180 °, when locating part 1 is welded on outer tube 2a lower end B, needn't make locating part 1 in the circular arc of locating part 1 from above insert lower end B, just can under the state that locating part 1 is crimped onto lower end B from the side, weld.
Below locating part 1, fork member 3 is connected on the periphery of outer tube 2a lower end B.Fork member 3 is made of fitting portion 3a and a pair of branching portion 3c, and this fitting portion 3a is a tubular, and is chimeric with lower end B periphery, and this a pair of branching portion 3c extends downwards from fitting portion 3a.Fitting portion 3a has endplay 3b.Branching portion 3c lower end is hinged with the lower shake-changing arm that is connected in axletree.
The nut portions 3e that is provided with boss 3d and has negative thread is given prominence in both sides at the gap of fitting portion 3a 3b towards the side, this boss 3d with the direction of the orthogonal axe of water bumper 2 on have the bolt hole that connects for bolt 4.The lower end B of water bumper 2 is inserted the fitting portion 3a of fork member 3, make bolt 4 connect boss 3d, make the perforation end of bolt 4 be threaded in nut portions 3e and tighten fixingly, thus, will pitch member 3 fastenings in lower end B.By tightening bolt of rear end plate 4 to nut portions 3e, the reduced width of the gap 3b of fitting portion 3a makes fitting portion 3a be close to the periphery that remains on lower end B.
In the time of will pitching member 3 and be fixed on outer tube 2a lower end B, make fitting portion 3a upper end and locating part 1 following butt.At this moment, enter the gap 3b of fitting portion 3a, fitting portion 3a is positioned at predetermined angular position and the regulation axial location of water bumper 2 lower end B by projection 1 C that makes locating part 1.Under this state, tighten bolt of rear end plate 4 to nut 3e, then bolt 4 is entrenched in the recess 2d that is formed on lower end B.Break away from the displacement of direction and swing offset from lower end B with the chimeric bolt of recess 2d 4 restriction fork members 3 with respect to lower end B.So, locating part 1 and bolt 4 mutual actions stop fork member 3 and the relative displacement of water bumper 2 on all directions.
As described above, owing to fitting portion 3a is axially being reached under the state of locating on the hand of rotation by locating part 1, tighten bolt of rear end plate 4 to nut 3e, therefore, before tightening bolt of rear end plate 4, do not need to carry out the positioning action of the trouble between the lower end B of fitting portion 3a and outer tube 2a, can easily carry out to lower end B assembling fork member 3.
Be connected in lower shake-changing arm owing to will pitch two 3c of stock branch of member 3, therefore, the last top masterpiece that comes from lower shake-changing arm is used for branching portion 3c, thereby each branching portion 3c is the center, fitting portion 3a is produced the power that makes progress to the position of the left and right directions upper offset of Fig. 1 at the gap 3b with fitting portion 3a.Its result dwindles 3b top, gap, enlarges the moment loading of direction of 3b bottom, gap in fitting portion 3a.Make the following and fitting portion 3a butt of flank section 1b of locating part 1 both sides, and will be welded in the lower end B of outer tube 2a, thus, can support power that makes progress and the moment that is applied on the fitting portion 3a near the point of action with the top of following almost parallel.Therefore, can stop the distortion of gap 3b, and, of the shake displacement of fork member 3 can also fully be suppressed with respect to water bumper 2.
Therefore the axial length of each flank section 1b, can also prevent the caused flank section 1b bending of last top power by branching portion 3c reliably less than the axial length of central portion 1a.Therefore, locating part 1 becomes and is difficult to the structure peeled off from the periphery of water bumper 2 lower end B.Like this, by the effect of each flank section 1b, make locating part 1 keep bigger bearing capacity with respect to fitting portion 3a.
The circumferential lengths of locating part 1 being in make angle θ is scope below 180 °, therefore, when locating part 1 is fixed on the lower end B of water bumper 2, also needn't weld on circumferentially the whole of lower end B.Therefore, welding operation produces welding deformation on outer tube 2a, cylinder 2b possibility is lower, because welding heat causes that the possibility of the chemical reactions such as power fluid generation oxidation in the water bumper 2 is also less.Therefore, can not bring welding deformation, the such harmful effect ground of power fluid oxidation that locating part 1 is fixed on lower end B to water bumper 2.By angle θ is set in below 180 °, can also suppress increases welding cost along with implementing the present invention.
The load that should support according to locating part 1 (promptly acting on the compressive force of fork member 3 and the moment that compressive force is produced fitting portion 3a), obtain the shearing strength value of the weld part of needed flank section 1b, thereby determine the weld length of each flank section 1b with the shearing strength value of the weld part of central portion 1a.
Angle θ, in other words the circumferencial direction length of flank section 1b is set as follows.Promptly, be set at and satisfy following condition: can guarantee the weld length of the flank section 1b that determined with said method and obtain essential angle θ that to be resistant function stop the gap 3b necessary angle that deforms in the last top power of fork member 3 to this essential angle θ to the moment of fitting portion 3a generation.As if the circumferencial direction length of determining flank section 1b with this method, then can realize playing the locating part 1 of above-mentioned each action effect with less cost.
About above explanation, will merge to this with Japanese patent application 2007-025600 number the content quotation that on February 5th, 2007 was the applying date.
More than, by several certain embodiments, understand the present invention, still, the present invention is not limited to the various embodiments described above.To those skilled in the art, in the protection domain of claims, can apply various corrections or change to these embodiment.
For example, in the above-described embodiments, be formed with clearance portion 3b at the fitting portion 3a of fork member 3, still, locating part 1 of the present invention also goes for not forming at fitting portion 3a the fork member 3 of clearance portion 3b.Also can obtain ideal effect in this case: prevent the welding deformation of water bumper 2, the power fluid oxidation in the water bumper 2, and stop by the displacement of fastening at the fork member 3 of outer tube lower end B in the following parties concerned.
In addition, dwindled the diameter of outer tube 2a lower end B in the above-described embodiments, but the diameter that dwindles lower end B is not to implement essential feature of the present invention.Even lower end B is identical with other position diameters of outer tube 2a, by using locating part 1 of the present invention, also can obtain ideal effect in the following parties concerned: stop the displacement of fork member 3, prevent water bumper 2 welding deformation, prevent the power fluid oxidation in the water bumper 2.
Exclusive character or feature that embodiments of the invention comprised will be recorded in claims.
Claims (5)
1. vehicle water bumper, this water bumper (2) be installed in vehicle vehicle body and and axletree bonded assembly lower shake-changing arm between, have outer tube (2a), fork member (3), locating part (1); This fork member (3) has fitting portion (3a) and branching portion (3c), and this fitting portion (3a) is a tubular, and is chimeric with the periphery of outer tube (2a), and this branching portion (3c) branches into two strands from fitting portion (3a), and front end is connected with lower shake-changing arm; This locating part (1) is fixed on the outer tube (2a), is used to limit fitting portion (3a) at the relative displacement that axially reaches on the hand of rotation, it is characterized in that,
Locating part (1) has central portion (1a) and a pair of flank section (1b), and the circumferencial direction to outer tube (2a) extends this a pair of flank section (1b) from central portion (1a) two ends;
The axial length of each flank section (1b) is less than the axial length of central portion (1a);
Flank section (1b) has the one side that is connected to fitting portion (3a) and is positioned at an opposite side, is welded on one side of outer tube (2a) periphery.
2. vehicle according to claim 1 is with water bumper (2), and flank section (1b) two ends of locating part (1) are set at below 180 ° with the angle towards this locating part (1) that the center became (θ) of water bumper (2).
3. vehicle according to claim 1 water bumper (2), fitting portion (3a) has endplay (3b), and the central portion (1a) of locating part (1) has the projection (1c) that enters gap (3b).
4. vehicle according to claim 3 water bumper (2), fitting portion (3a) also has boss (3d) and nut portions (3e), this boss (3d) has near gap (3b) to the outstanding bolt hole that is provided with in side, this nut portions (3e) is outstanding across gap (3b) opposite side direction side with boss (3d), is fixed on boss (3d) and with gap (3b) fitting portion (3a) is fixed on outer tube (2a) periphery by bolt (4) is tightened.
5. vehicle according to claim 4 has and tightens the chimeric recess (2d) of bolt (4) that is fixed on boss (3d) and gap (3b) state with water bumper (2), outer tube (2a).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007025600A JP4996935B2 (en) | 2007-02-05 | 2007-02-05 | Stopper |
| JP2007025600 | 2007-02-05 | ||
| JP2007-025600 | 2007-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101239569A CN101239569A (en) | 2008-08-13 |
| CN101239569B true CN101239569B (en) | 2010-06-23 |
Family
ID=39749654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100071783A Expired - Fee Related CN101239569B (en) | 2007-02-05 | 2008-02-02 | Buffer for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4996935B2 (en) |
| CN (1) | CN101239569B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237857A (en) * | 2017-07-25 | 2017-10-10 | 江苏中色锐毕利实业有限公司 | A kind of aluminium alloys for automobile matter damper connection fork |
| DE102018207757A1 (en) * | 2018-05-17 | 2019-11-21 | Zf Friedrichshafen Ag | Vibration damper with adjustable damping valve |
| JP7185483B2 (en) * | 2018-10-22 | 2022-12-07 | Ｋｙｂ株式会社 | buffer |
| JP7275061B2 (en) * | 2020-02-06 | 2023-05-17 | 日立Astemo株式会社 | Cylinder device |
| JP7481889B2 (en) * | 2020-04-10 | 2024-05-13 | カヤバ株式会社 | Shock absorber |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3239469B2 (en) * | 1992-09-28 | 2001-12-17 | トヨタ自動車株式会社 | Absorber fastening structure |
| JPH07246813A (en) * | 1994-03-08 | 1995-09-26 | Honda Motor Co Ltd | Damper supporting member structure in suspension system for vehicle |
| DE10318537B4 (en) * | 2003-04-24 | 2006-03-30 | Zf Sachs Ag | Vibration damper with a connection to a wheel carrier |
| DE102005007382B3 (en) * | 2005-02-18 | 2006-04-06 | Zf Friedrichshafen Ag | Vibration damper for machine has deformation region permitting displacement of component of tubular body above normal load |
| JP2006233986A (en) * | 2005-02-22 | 2006-09-07 | Kayaba Ind Co Ltd | Hydraulic shock absorber |
| JP2006231943A (en) * | 2005-02-22 | 2006-09-07 | Kayaba Ind Co Ltd | Bracket of suspension device |
| DE102005014009B3 (en) * | 2005-03-26 | 2006-08-31 | Zf Friedrichshafen Ag | Vibration damper, e.g. for vehicle front wheels, has a holder in one piece with the cylinder base with a laying surface welded to the cylinder mantle surface |
-
2007
- 2007-02-05 JP JP2007025600A patent/JP4996935B2/en active Active
-
2008
- 2008-02-02 CN CN2008100071783A patent/CN101239569B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008189135A (en) | 2008-08-21 |
| CN101239569A (en) | 2008-08-13 |
| JP4996935B2 (en) | 2012-08-08 |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan Patentee after: KYB Corp. Patentee after: MAZDA MOTOR Corp. Address before: Tokyo, Japan Patentee before: KAYABA INDUSTRY Co.,Ltd. Patentee before: MAZDA MOTOR Corp. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190729 Address after: Tokyo, Japan Patentee after: KYB Corp. Address before: Tokyo, Japan Co-patentee before: MAZDA MOTOR Corp. Patentee before: KYB Corp. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 |
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| CF01 | Termination of patent right due to non-payment of annual fee |