JPS6227719Y2 - - Google Patents
Info
- Publication number
- JPS6227719Y2 JPS6227719Y2 JP1981075836U JP7583681U JPS6227719Y2 JP S6227719 Y2 JPS6227719 Y2 JP S6227719Y2 JP 1981075836 U JP1981075836 U JP 1981075836U JP 7583681 U JP7583681 U JP 7583681U JP S6227719 Y2 JPS6227719 Y2 JP S6227719Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- bush
- bushing
- prevention member
- axial direction
- 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
Links
- 230000002265 prevention Effects 0.000 claims description 17
- 241001247986 Calotropis procera Species 0.000 claims description 2
- 239000000725 suspension Substances 0.000 description 11
- 230000003405 preventing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Springs (AREA)
Description
【考案の詳細な説明】
本考案はブツシユの組立構造に関し、さらに詳
しくは、自動車の懸架装置において、サスペンシ
ヨンアームに直接圧入されるブツシユに最適な組
立構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bush assembly structure, and more particularly, to an assembly structure that is optimal for a bush that is press-fitted directly into a suspension arm in an automobile suspension system.
ブツシユが、例えば、サスペンシヨンアームの
端に設けられたアイのような外筒に直接圧入され
る場合、ブツシユの軸線方向の両端に設けられた
一対のフランジ部のそれぞれが、外筒の軸線方向
の端に係止されて固定される。この場合、ブツシ
ユにはスリーブのような内筒が固着されているた
め、ブツシユのフランジ部の外径を外筒の内径に
比して極端に大きくすると、フランジ部が外筒内
に圧入されるとき変形せず、組み立てが不能にな
る。従つて、フランジ部の外径は、当該フランジ
部の外周面がたかだか外筒の肉厚の半分程度まで
に位置するように抑えられている。 For example, when the bushing is directly press-fitted into an outer cylinder such as an eye provided at the end of a suspension arm, each of the pair of flanges provided at both ends of the bushing in the axial direction It is locked and fixed at the end of the In this case, since the inner cylinder like a sleeve is fixed to the bushing, if the outer diameter of the flange part of the bushing is made extremely large compared to the inner diameter of the outer cylinder, the flange part will be press-fitted into the outer cylinder. When the product does not deform, assembly becomes impossible. Therefore, the outer diameter of the flange portion is limited so that the outer circumferential surface of the flange portion is at most about half the wall thickness of the outer cylinder.
ところで、サスペンシヨンアームが車体に連結
されて使用に供されると、サスペンシヨンアーム
のブツシユには、軸線方向の力またはこの力に加
えてねじり力が加わるため、前記のように、外筒
の端に径方向のわずかな重なり長さにわたつて係
止されているにすぎないブツシユのフランジ部の
一方が外筒の一端から抜けてしまつたり、あるい
は、ブツシユの軸線をはさんで上方となる一方側
のフランジ部の一部分と下方となる他方側のフラ
ンジ部の一部分とが外筒の両端から抜けてしまう
可能性がある。 By the way, when the suspension arm is connected to the vehicle body and put into use, an axial force or a torsional force is applied to the bushing of the suspension arm. One of the flange portions of the bushing, which is only locked over a small radial overlap length at the end, may come off from one end of the outer cylinder, or the bushing may become stuck in the upper part across the axis of the bushing. There is a possibility that a portion of the flange portion on one side and a portion of the flange portion on the other side that is lower may come off from both ends of the outer cylinder.
従つて本考案の目的は、ブツシユが外筒から抜
けるのを防止するブツシユの組立構造を提供する
ことにある。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a bush assembly structure that prevents the bush from coming off the outer cylinder.
本考案のブツシユの組立構造は、外筒の軸線方
向の少なくとも一端に配置されかつ該端に当接さ
れ、外筒の内周面を越えて径方向の内方へブツシ
ユのフランジ部の中間部分まで伸びる抜け防止部
材を含む。これによつて、ブツシユフランジ部の
受圧面積が増大して、抜けは防止される。 The assembly structure of the bush of the present invention is such that the bush is disposed at at least one end in the axial direction of the outer cylinder, is in contact with the end, and extends radially inward beyond the inner circumferential surface of the outer cylinder to the intermediate portion of the flange portion of the bush. Includes a pull-out prevention member that extends up to This increases the pressure receiving area of the bushing flange portion and prevents it from coming off.
以下添付の図面を参照して本考案の実施例につ
いて説明する。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with
本考案のブツシユの組立構造１０は、例えば第
１図に示すように、サスペンシヨンアーム１２の
車体への連結側の端部に装着される。このサスペ
ンシヨンアーム１２の自由端側にはボールジヨイ
ントを介してナツクルアーム１４が連結され、タ
イヤ１６を支持する。図中１８はシヨツクアブソ
ーバ、２０はドライブシヤフトである。 The bush assembly structure 10 of the present invention is attached to the end of the suspension arm 12 on the side connected to the vehicle body, as shown in FIG. 1, for example. A knuckle arm 14 is connected to the free end side of this suspension arm 12 via a ball joint, and supports a tire 16. In the figure, 18 is a shock absorber, and 20 is a drive shaft.
ブツシユの組立構造１０は、第２図に示すよう
に、外筒２２にゴム製のブツシユ２４が嵌合さ
れ、このブツシユ２４に内筒２６が装着され、し
かも抜け防止部材２８が装着されている。 As shown in FIG. 2, the bush assembly structure 10 includes a rubber bush 24 fitted to an outer cylinder 22, an inner cylinder 26 attached to this bush 24, and a slip-off prevention member 28 attached. .
外筒２２は、本例では、前記したサスペンシヨ
ンアーム１２の端に設けられたアイである。この
外筒２２の軸線方向の長さは、ブツシユ２４の軸
線方向の長さよりも短く形成され、外筒２２の軸
線方向の両端２３に、ブツシユ２４のフランジ部
２５がそれぞれ対峙している。本例では、外筒の
一方の端が一方のフランジ部に直接に当接され、
外筒の他方の端と他方のフランジ部との間に前記
抜け防止部材２８が介装されている。 In this example, the outer cylinder 22 is an eye provided at the end of the suspension arm 12 described above. The length of the outer cylinder 22 in the axial direction is shorter than the length of the bush 24 in the axial direction, and the flange portions 25 of the bush 24 face both ends 23 of the outer cylinder 22 in the axial direction. In this example, one end of the outer cylinder is brought into direct contact with one of the flange parts,
The slip-off prevention member 28 is interposed between the other end of the outer cylinder and the other flange.
ブツシユ２４は外筒２２に圧入され、他方、内
筒２６はブツシユ２４に加硫成形の際に一体に固
着されている。この内筒２６はスリーブであつ
て、ボルトなどが挿通され、ボルトナツトによつ
てサスペンシヨンアームは図示してないブラケツ
トを介して車体に連結される。 The bushing 24 is press-fitted into the outer cylinder 22, while the inner cylinder 26 is integrally fixed to the bushing 24 during vulcanization. The inner cylinder 26 is a sleeve into which a bolt or the like is inserted, and the suspension arm is connected to the vehicle body by the bolt/nut via a bracket (not shown).
抜け防止部材２８は、第３図および第４図に示
すように、輪状をしており、中央には、ブツシユ
の軸線方向に伸びるインサート部２９が設けられ
ている。このインサート部２９よりも径方向の内
方の部分は突出部３０となつている。また、イン
サート部２９よりも径方向の外方の部分は当接部
３１となつている。抜け防止部材２８は金属のプ
レス成形品、あるいは樹脂の成形品などからな
る。 As shown in FIGS. 3 and 4, the fall-off prevention member 28 has a ring shape, and an insert portion 29 extending in the axial direction of the bushing is provided in the center. A portion radially inward of the insert portion 29 is a protrusion 30 . Further, a portion radially outward of the insert portion 29 serves as an abutment portion 31 . The falling-off prevention member 28 is made of a metal press molded product, a resin molded product, or the like.
前記インサート部２９の外径は前記外筒２２の
内周面３２に嵌合される大きさである。このイン
サート部２９により、抜け防止部材２８が、第２
図の装着状態にもたらされたとき、外れが防止さ
れ、しかも装着の際にセンタリングが行われる。 The outer diameter of the insert portion 29 is large enough to fit into the inner circumferential surface 32 of the outer cylinder 22. This insert portion 29 allows the slip-off prevention member 28 to be inserted into the second
When brought into the wearing state shown in the figure, it is prevented from coming off, and moreover, centering is performed during installation.
前記インサート部２９が外筒２２の内周面３２
に嵌合され、前記当接部３１が外筒２２の端２３
に当接されると、前記突出部３０は外筒の内周面
３２を越えて径方向の内方へフランジ部２５の中
間部分まで伸びることとなり、ブツシユ２４のフ
ランジ部２５の受圧面積は、この突出部３０の面
積だけ増大する。従つて、外筒２２の肉厚が薄
く、ブツシユ２４のフランジ部２５と外筒２２と
の径方向の重なり長さd1が小さなときには、特に
大きな効果が期待できる。従来では、前記重なり
長さd1のみで、フランジ部２５が保持されていた
のは前記の通りである。 The insert portion 29 is attached to the inner circumferential surface 32 of the outer cylinder 22.
The abutting portion 31 is fitted into the end 23 of the outer cylinder 22.
, the protruding portion 30 extends radially inward beyond the inner peripheral surface 32 of the outer cylinder to the middle portion of the flange portion 25, and the pressure receiving area of the flange portion 25 of the bush 24 is The area of this protrusion 30 increases. Therefore, especially when the wall thickness of the outer cylinder 22 is thin and the radial overlapping length d 1 between the flange portion 25 of the bush 24 and the outer cylinder 22 is small, a particularly great effect can be expected. As described above, in the past, the flange portion 25 was held only by the overlap length d1 .
前記抜け防止部材２８は、第５図に示すよう
に、外筒２２へ圧入する前のブツシユ２４に装着
しておけば、第２図に示す使用状態へ容易にもた
らすことができる。この場合、全周にわたる溝３
４をブツシユ２４に前もつて設けておく。また、
抜け防止部材２８に当接されるフランジ部２５の
外径を、他方のフランジ部２５の外径よりも大き
く形成すると、ブツシユの抜け防止の効果は一層
向上する。 If the slip-off prevention member 28 is attached to the bush 24 before being press-fitted into the outer cylinder 22, as shown in FIG. 5, it can be easily brought into the usage state shown in FIG. 2. In this case, the groove 3 over the entire circumference
4 is attached to the front of the bush 24. Also,
If the outer diameter of the flange portion 25 that comes into contact with the falling-off prevention member 28 is made larger than the outer diameter of the other flange portion 25, the effect of preventing the bush from falling off is further improved.
前記抜け防止部材は、２つ割りまたはそれ以上
の分割体として形成することもできる。このよう
な分割体によれば、ブツシユ２４への装着が容易
となるので好ましい。 The slip-off prevention member can also be formed into two or more pieces. Such a divided body is preferable because it can be easily attached to the bush 24.
第６図は、さらに別の抜け防止部材３６を装置
した例を示す。この抜け防止部材３６にはインサ
ート部が設けられていない。この抜け防止部材３
６は２つ割りとなつたもので、ブツシユを外筒２
２へ圧入後、外筒２２の軸線方向の両端とブツシ
ユ２４の対向するフランジ部２５との間に装着さ
れ、接着されている。前記第２図の組立構造にお
いて、抜け防止部材２８が配置されていない外筒
の端に、この例の抜け防止部材を装着することも
できる。これにより、ブツシユの抜け防止は一層
完全となる。 FIG. 6 shows an example in which still another slip-off prevention member 36 is installed. This slip-off prevention member 36 is not provided with an insert portion. This falling-off prevention member 3
6 is split into two parts, and the bushing is attached to the outer cylinder 2.
After being press-fitted into the bushing 2, the bushing 24 is fitted between both ends of the outer cylinder 22 in the axial direction and the opposing flange portions 25 of the bushing 24, and is bonded to the bushing 24. In the assembly structure shown in FIG. 2, the falling-off preventing member of this example can also be attached to the end of the outer cylinder where the falling-off preventing member 28 is not disposed. Thereby, the bushing can be more completely prevented from coming off.
抜け防止部材が設けられていない従来のブツシ
ユの組立構造においてフランジ部２５の径方向の
重なり長さd1＝２mmにしたものと、本考案に従つ
て配設された抜け防止部材２８の当接部と突出部
との径方向長さ、すなわち第３図のd2＝４mmにし
たものとに、それぞれブツシユの軸線方向に200
Kgの荷重を付与した実験結果によると、フランジ
部の単位面積当たりの荷重は従来構造が93.5Kg／
cm2であつたのに対し、本考案では46.5Kg／cm2と、
ほぼ半減した。また、ブツシユの軸線方向に200
Kgの荷重と、ブツシユの軸線方向の一方の端と他
方の端との間に20゜のねじり角負荷とを同時に与
えた場合、ブツシユが２mmの抜け量に達するまで
の供用回数は従来構造が1.4万回だつたのに対
し、本考案では15万回と、10倍以上の寿命の向上
が認められた。 Contact between the conventional bush assembly structure in which the flange portion 25 has a radial overlapping length d 1 =2 mm and which is not provided with a fall-off prevention member, and the fall-off prevention member 28 arranged according to the present invention. The radial length of the part and the protruding part, that is, d 2 = 4 mm in Fig. 3, is 200 mm in the axial direction of the bush.
According to the experimental results with a load of Kg applied, the load per unit area of the flange part was 93.5Kg/
cm2 , whereas in this invention it was 46.5Kg/ cm2 ,
It was almost halved. Also, 200 mm in the axial direction of the bushing.
When a load of Kg and a torsion angle load of 20° are applied between one end of the bush in the axial direction and the other end at the same time, the number of times the bush can be used until the bush reaches a pullout of 2 mm is longer than that of the conventional structure. Compared to 14,000 cycles, the lifespan of the present invention was 150,000 cycles, an improvement of more than 10 times.
本考案によれば、ブツシユのフランジ部の受圧
面積を増大する結果、フランジ部が外筒から抜け
るのを防止でき、ブツシユが抜けることによつ
て、金属相互が接触して摩耗したり、騒音が発生
することはない。また、抜け防止部材はブツシユ
のフランジ部の中間部分まで伸びているので、ブ
ツシユのばね定数への影響を少なくして抜け防止
効果を高めることができる。 According to the present invention, as a result of increasing the pressure receiving area of the flange part of the bushing, it is possible to prevent the flange part from coming off from the outer cylinder, and when the bushing comes off, metals come into contact with each other, causing wear and noise. It will never occur. Moreover, since the falling-off preventing member extends to the middle part of the flange portion of the bushing, the effect on the spring constant of the bushing can be reduced and the falling-off preventing effect can be enhanced.
第１図は本考案のブツシユの組立構造が適用さ
れる自動車の懸架装置の斜視図、第２図は本考案
のブツシユの組立構造の断面図、第３図は抜け防
止部材の断面図、第４図は同正面図、第５図は外
筒に装着する前のブツシユの断面図、第６図は本
考案のブツシユの組立構造の別の例を示す断面図
である。
１０：ブツシユの組立構造、１２：サスペンシ
ヨンアーム、２２：外筒、２４：ブツシユ、２
５：フランジ部、２６：内筒、２８，３６：抜け
防止部材、２９：インサート部、３０：突出部、
３１：当接部、３２：内周面。
FIG. 1 is a perspective view of an automobile suspension system to which the bush assembly structure of the present invention is applied, FIG. 2 is a sectional view of the bush assembly structure of the present invention, and FIG. FIG. 4 is a front view of the same, FIG. 5 is a sectional view of the bush before being attached to the outer cylinder, and FIG. 6 is a sectional view showing another example of the bush assembly structure of the present invention. 10: Bush assembly structure, 12: Suspension arm, 22: Outer cylinder, 24: Bush, 2
5: Flange part, 26: Inner cylinder, 28, 36: Fallout prevention member, 29: Insert part, 30: Projection part,
31: Contact portion, 32: Inner peripheral surface.
Claims (1)
あつて前記外筒の軸線方向の両端にそれぞれ対峙
するフランジ部を両端に有するブツシユと、該ブ
ツシユに一体に設けられた内筒と、前記外筒の軸
線方向の少なくとも一端に配置され、該端に当接
される抜け防止部材とを含み、該抜け防止部材
は、前記外筒の内周面を越えて径方向の内方へ前
記ブツシユのフランジ部の中間部分まで伸びる、
ブツシユの組立構造。 an outer cylinder, a rubber bush that is fitted into the outer cylinder and has flanges at both ends facing each end of the outer cylinder in the axial direction; and an inner cylinder integrally provided with the bush. , a slip-off prevention member disposed at at least one end of the outer cylinder in the axial direction and abutted against the end, the slip-off prevention member extending radially inward beyond the inner circumferential surface of the outer cylinder. extending to the middle portion of the flange portion of the bushing;
Butsuyu assembly structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981075836U JPS6227719Y2 (en) | 1981-05-27 | 1981-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981075836U JPS6227719Y2 (en) | 1981-05-27 | 1981-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57187944U JPS57187944U (en) | 1982-11-29 |
| JPS6227719Y2 true JPS6227719Y2 (en) | 1987-07-16 |
Family
ID=29871556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981075836U Expired JPS6227719Y2 (en) | 1981-05-27 | 1981-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6227719Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627435B2 (en) * | 1977-06-25 | 1981-06-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813152Y2 (en) * | 1979-08-07 | 1983-03-14 | 鬼怒川ゴム工業株式会社 | Anti-vibration bushing |
-
1981
- 1981-05-27 JP JP1981075836U patent/JPS6227719Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627435B2 (en) * | 1977-06-25 | 1981-06-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57187944U (en) | 1982-11-29 |
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