JPH0356333B2 - - Google Patents
Info
- Publication number
- JPH0356333B2 JPH0356333B2 JP61056392A JP5639286A JPH0356333B2 JP H0356333 B2 JPH0356333 B2 JP H0356333B2 JP 61056392 A JP61056392 A JP 61056392A JP 5639286 A JP5639286 A JP 5639286A JP H0356333 B2 JPH0356333 B2 JP H0356333B2
- Authority
- JP
- Japan
- Prior art keywords
- spring seat
- bound bumper
- protrusion
- bound
- spring
- 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 - Lifetime
Links
- 230000037431 insertion Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000428 dust Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- 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
- F16F9/32—Details
- F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Dampers (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明はサスペンシヨンに使用されるウレタ
ンバウンドバンパに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a urethane bound bumper used in a suspension.
従来の技術
第９図に示すように、サスペンシヨン、とりわ
けストラツト型サスペンシヨンにあつては、シヨ
ツクアブソーバ１のピストンロツド２の外側にバ
ウンドバンパ３を設けると共にこのバウンドバン
パ３の下側にダストブーツ４を取付けてピストン
ロツド２をダストから保護すると共にバウンドバ
ンパ３のもつばね特性を有効利用するようにした
ものがある。BACKGROUND ART As shown in FIG. 9, in a suspension, especially a strut type suspension, a bounce bumper 3 is provided on the outside of the piston rod 2 of the shock absorber 1, and a dust boot 4 is provided below the bounce bumper 3. There is one that protects the piston rod 2 from dust by attaching a bumper and also makes effective use of the spring characteristics of the bound bumper 3.
上記バウンドバンパ３はゴム等よりも非線形な
ばね特性を有する発泡ウレタンで形成されコイル
スプリング５のスプリングシート６下面に圧接さ
れる際にある程度のつき上げ力を荷重分担できる
と共に圧縮変形時における外方へのふくらみ量が
少ない点で有利である。 The bound bumper 3 is made of urethane foam, which has more non-linear spring characteristics than rubber or the like, and can share a certain amount of uplifting force when pressed against the lower surface of the spring seat 6 of the coil spring 5, as well as provide an outward force during compression deformation. It is advantageous in that the amount of bulge is small.
発明が解決しようとする問題点
上記のようにバウンドバンパ３は補助ばね的に
ある程度の入力荷重を分担できる点で優れている
が、その反面、スプリングシート６の下面にバウ
ンドバンパ３の上面３ａが圧接している場合に両
者の接触面積が大きいため車両操舵時等において
剪断方向に力がかかるとこすれ音等が発生してし
まう点が指摘されている。Problems to be Solved by the Invention As mentioned above, the bound bumper 3 is excellent in that it can share a certain amount of input load as an auxiliary spring. It has been pointed out that when the two are in pressure contact, the contact area between them is large, so that when a force is applied in the shearing direction when steering a vehicle, etc., a rubbing sound or the like is generated.
そこで、この発明は、バウンドバンパのもつ荷
重分担機能に支障をきたすことなく、車両操舵時
においてスプリングシートとの間で発生するこす
れ音等の異常発生を阻止できるウレタンバウンド
バンパを提供するものである。 SUMMARY OF THE INVENTION Therefore, the present invention provides a urethane bound bumper that can prevent abnormalities such as rubbing noise between the spring seat and the spring seat during vehicle steering without interfering with the load sharing function of the bound bumper. .
問題点を解決するための手段
シヨツクアブソーバのピストンロツドの挿通孔
を有すると共にコイルスプリングを受けるスプリ
ングシート下面に当接するバウンドバンパ本体の
スプリングシート当接面に突部が設けられてい
る。Means for Solving the Problems A protrusion is provided on the spring seat abutting surface of the bound bumper body, which has an insertion hole for the piston rod of the shock absorber and comes into contact with the lower surface of the spring seat that receives the coil spring.
作 用
下からのつき上げ力に対してはコイルスプリン
グのスプリングシート下面に圧接することで荷重
分担を行ない車両操舵時等にスプリングシートの
下面とバウンドバンパ上面との間に相対移動があ
つても、スプリングシート下面に当接するのは突
部だけであるため接触面積が小さくこすれ音等の
異音発生が阻止される。Function: In response to lifting force from below, the load is shared by the coil spring being in pressure contact with the lower surface of the spring seat, and even if there is relative movement between the lower surface of the spring seat and the upper surface of the bound bumper during vehicle steering, etc. Since only the protrusions contact the lower surface of the spring seat, the contact area is small and the generation of abnormal noises such as rubbing noises is prevented.
実施例
以下、この発明の実施例を図面と共に前記従来
の構成と同一部分に同一符号を付して詳述する。Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same parts as in the conventional structure.
第１〜４図において、３は発泡ウレタン製のバ
ウンドバンパ本体であつて、バウンドバンパ本体
３の下端外周にはダストブーツ４が取付けられて
いる。 In FIGS. 1 to 4, reference numeral 3 denotes a bound bumper body made of urethane foam, and a dust boot 4 is attached to the outer periphery of the lower end of the bound bumper body 3.
バウンドバンパ本体３はシヨツクアブソーバ１
のピストンロツド２が挿通される挿通孔７を備え
ると共に内外の周壁は荷重変形特性を高めるため
に波形状に成形されている。また、バウンドバン
パ本体３のスプリングシート６当接面としての上
面３ａには第２図に示すように挿通孔７の両側に
一対と、挿通孔７を中心としてクロス状に突部と
しての突条８が合計８カ所配設され、スプリング
シート６の下面との接触面積を小さくしてある。
そして、上記各突条８のバウンドバンパ本体３の
外周端側は、基部側が斜状にカツトされて切欠部
９が設けられている。 Bound bumper body 3 is shock absorber 1
The piston rod 2 is provided with an insertion hole 7 through which the piston rod 2 is inserted, and the inner and outer circumferential walls are formed into a wave shape to enhance load deformation characteristics. Further, as shown in FIG. 2, on the upper surface 3a of the bound bumper body 3 as the contact surface of the spring seat 6, there are a pair of protrusions on both sides of the insertion hole 7, and a cross-shaped protrusion with the insertion hole 7 as the center. 8 are disposed at a total of eight locations to reduce the contact area with the lower surface of the spring seat 6.
The outer peripheral end side of the bound bumper main body 3 of each of the protrusions 8 is cut obliquely at the base side, and a notch 9 is provided.
尚、上記突条８の高さＨは1.0〜5.0mm、厚さＬ
は0.5〜5.0mmに設定するのが望ましい。また、上
記挿通孔７の内周壁には挿通方向に半円形状の凹
部１０が形成されている。 In addition, the height H of the above-mentioned protrusion 8 is 1.0 to 5.0 mm, and the thickness L
It is desirable to set it to 0.5 to 5.0 mm. Further, a semicircular recess 10 is formed in the inner peripheral wall of the insertion hole 7 in the insertion direction.
以上の実施例構造によれば、車両走行時にサス
ペンシヨンに対して上方向に突き上げ力がかかる
と、この突き上げ力は図外のコイルスプリングに
より吸収されると共にバウンドバンパ本体３がス
プリングシート６に圧接されて縮少することによ
つても十分に吸収され良好な乗りごこち感が確保
される。 According to the structure of the above embodiment, when an upward thrust force is applied to the suspension while the vehicle is running, this thrust force is absorbed by the coil spring (not shown), and the bound bumper body 3 is pressed against the spring seat 6. By reducing the amount of heat absorbed by the air, it is sufficiently absorbed and a good riding comfort is ensured.
また、車両操舵時等にスプリングシート６とバ
ウンドバンパ本体３とが当接している状態で横方
向に力が作用し両者にずれを生じたとしてもスプ
リングシート６の下面に当接しているバウンドバ
ンパ本体３上面３ａの突条８の接触面積が小さい
ため、こすれ音等の異音が生ずることはない。 Furthermore, even if a force is applied in the lateral direction while the spring seat 6 and the bound bumper main body 3 are in contact with each other during vehicle steering and the like, causing a shift between the two, the bound bumper that is in contact with the lower surface of the spring seat 6 Since the contact area of the protrusion 8 on the upper surface 3a of the main body 3 is small, no abnormal noise such as rubbing noise is generated.
また、第５，６図に示すのはこの発明の他の実
施例のバウンドバンパ本体３であり、このバウン
ドバンパ本体３においては、上面３ａに設ける突
部として環状突条８Ａを二重に設けたものであ
る。 Moreover, what is shown in FIGS. 5 and 6 is a bound bumper main body 3 according to another embodiment of the present invention, and in this bound bumper main body 3, a double annular protrusion 8A is provided as a protrusion provided on the upper surface 3a. It is something that
次に、第７，８図に示すのは、この発明の他の
実施例のバウンドバンパ本体３であり、このバウ
ンドバンパ本体３にあつては、突部として同芯円
上であつて所定間隔に複数の突起８Ｂを設けたも
のである。 Next, FIGS. 7 and 8 show a bound bumper body 3 according to another embodiment of the present invention. In this bound bumper body 3, the protrusions are on concentric circles and are spaced apart at predetermined intervals. A plurality of protrusions 8B are provided.
尚、上記第５〜８図に示す各実施例において
は、前述実施例と同一部分については同一符号を
付して説明を省略する。 In each of the embodiments shown in FIGS. 5 to 8, the same parts as those in the previous embodiment are designated by the same reference numerals, and the explanation thereof will be omitted.
発明の効果
以上説明してきたようにこの発明によれば、シ
ヨツクアブソーバのピストンロツドの挿通孔を有
すると共にコイルスプリングを受けるスプリング
シート下面に当接するバウンドバンパ本体のスプ
リングシート当接面に突部が設けられていること
により、バウンドバンパ本体のスプリングシート
下面に対する接触面積が小さくなり、したがつ
て、車両操舵時にスプリングシート下面とバウン
ドバンパ本体に横ずれを生じた場合であつてもこ
すれ音等の異音が発生することはなく商品品質を
より一層高められるという実用上多大な効果を有
する。Effects of the Invention As described above, according to the present invention, a protrusion is provided on the spring seat abutting surface of the bound bumper body that has an insertion hole for the piston rod of the shock absorber and that abuts the lower surface of the spring seat that receives the coil spring. As a result, the contact area of the bound bumper body with the lower surface of the spring seat is reduced, and therefore, even if there is a lateral shift between the lower surface of the spring seat and the bound bumper body during vehicle steering, abnormal noises such as rubbing noises will be avoided. This has a great practical effect in that it does not occur and product quality can be further improved.
第１〜８図は、この発明の実施例を示し、第１
図はダストブーツを取付けた状態の斜視図、第２
図は平面図、第３図は第２図の−断面図、第
４図は第２図の−断面図、第５図は他の実施
例の平面図、第６図は第５図の−断面図、第
７図は別の実施例の平面図、第８図は第７図の
−断面図、第９図は従来技術の断面図である。
１…シヨツクアブソーバ、２…ピストンロツ
ド、３…バウンドバンパ本体、３ａ…上面（当接
面）、５…コイルスプリング、６…スプリングシ
ート、８…突条（突部）、８Ａ…環状突条（突
部）、８Ｂ…突起（突部）。
1 to 8 show embodiments of the present invention;
The figure is a perspective view with the dust boot installed.
3 is a sectional view of FIG. 2, FIG. 4 is a sectional view of FIG. 2, FIG. 5 is a plan view of another embodiment, and FIG. 6 is a sectional view of FIG. 5. 7 is a plan view of another embodiment, FIG. 8 is a sectional view taken from FIG. 7, and FIG. 9 is a sectional view of the prior art. DESCRIPTION OF SYMBOLS 1...Shock absorber, 2...Piston rod, 3...Bound bumper body, 3a...Top surface (contact surface), 5...Coil spring, 6...Spring seat, 8...Protrusion (protrusion), 8A...Annular protrusion (protrusion) ), 8B...Protrusion (protrusion).
Claims (1)
孔を有すると共にコイルスプリングを受けるスプ
リングシート下面に当接するバウンドバンパ本体
のスプリングシート当接面に突部が設けられてい
ることを特徴とするウレタンバウンドバンパ。1. A urethane bound bumper, which has an insertion hole for a piston rod of a shock absorber, and a protrusion is provided on a spring seat contacting surface of a bound bumper body that comes into contact with a lower surface of a spring seat that receives a coil spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5639286A JPS62215137A (en) | 1986-03-14 | 1986-03-14 | Urethane bound bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5639286A JPS62215137A (en) | 1986-03-14 | 1986-03-14 | Urethane bound bumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62215137A JPS62215137A (en) | 1987-09-21 |
| JPH0356333B2 true JPH0356333B2 (en) | 1991-08-28 |
Family
ID=13025946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5639286A Granted JPS62215137A (en) | 1986-03-14 | 1986-03-14 | Urethane bound bumper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62215137A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0292709A (en) * | 1988-09-27 | 1990-04-03 | Kinugawa Rubber Ind Co Ltd | Bound bumper for vehicle |
| JP2002181102A (en) * | 2000-12-15 | 2002-06-26 | Nippon Mektron Ltd | Bump stopper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571927B2 (en) * | 1975-02-12 | 1982-01-13 | ||
| JPH0356333A (en) * | 1989-07-24 | 1991-03-11 | Ricoh Co Ltd | Two stage paper feed apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113786Y2 (en) * | 1980-06-05 | 1986-04-28 |
-
1986
- 1986-03-14 JP JP5639286A patent/JPS62215137A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571927B2 (en) * | 1975-02-12 | 1982-01-13 | ||
| JPH0356333A (en) * | 1989-07-24 | 1991-03-11 | Ricoh Co Ltd | Two stage paper feed apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62215137A (en) | 1987-09-21 |
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