JPH04165134A - Vibration proof rubber of cylindrical shape - Google Patents
Vibration proof rubber of cylindrical shapeInfo
- Publication number
- JPH04165134A JPH04165134A JP29248790A JP29248790A JPH04165134A JP H04165134 A JPH04165134 A JP H04165134A JP 29248790 A JP29248790 A JP 29248790A JP 29248790 A JP29248790 A JP 29248790A JP H04165134 A JPH04165134 A JP H04165134A
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- bolt
- projections
- wall thickness
- insertion hole
- 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.)
- Pending
Links
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 abstract 2
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000013585 weight reducing agent Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Springs (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業−にの利用分野〕
この発明は、エンジンマウント等として使用される筒形
防振ゴムに関し、特に内筒の軽量化を図１だ筒形防振コ
ムに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a cylindrical anti-vibration rubber used as an engine mount, etc., and particularly relates to a cylindrical anti-vibration comb that reduces the weight of the inner cylinder as shown in Fig. 1. It is.
従来の筒形防振ゴムは、第１３図に示すように内筒１０
０と外筒１との間にゴム２を加硫接着し、内筒１００に
ボルトを挿通して例えば自動車のボディ側のブラケット
に取付け、外筒１をエンジン側のブラケットに圧入する
ようになっていた。The conventional cylindrical anti-vibration rubber has an inner cylinder 10 as shown in FIG.
Rubber 2 is vulcanized and bonded between 0 and the outer cylinder 1, a bolt is inserted into the inner cylinder 100, and it is attached to a bracket on the body side of an automobile, for example, and the outer cylinder 1 is press-fitted into the bracket on the engine side. was.
従来使用される内筒１００は、鉄パイプが大半を占め、
例えば外径が２０ｍｍ、内径が１０ｍｍ、厚みが５ｍｍ
のものがあった。このような内筒１００を軽量化するた
め内径を拡大して薄肉化しただけのものでは、ボルトを
挿通させたときにボルトと内筒１００とのガタが大きく
、ボルトを締め付けたときに内筒１００が座屈し易いと
いう欠点があった。また、内筒１００の材料としてアル
ミニウムやプラスチックを使用したものも知られている
が、いずれも第１３図に示す内筒１００と同様の断面形
状を有するものであり、肉厚は厚い。そのため、いずれ
の材料であっても型加工で製造するときにヒケ（収縮）
が発生し、精度（外径及び内径の均一性）が悪くなると
ともに、製造時の冷却工程において収縮しながら表面か
ら冷えていくため、肉厚の中央部に空隙部（巣）が発生
し易く、巣が発生したものは強度が弱くなるという欠点
もあった。さらに、用途によっては、外径が大きく挿通
するボルトの径が細い場合もあり、この場合には肉厚も
さらに大きくなり、上述の欠点が顕著になり、重量も増
大する。Most of the conventionally used inner cylinder 100 is made of iron pipes,
For example, the outer diameter is 20mm, the inner diameter is 10mm, and the thickness is 5mm.
There was something. If such an inner cylinder 100 is simply made thinner by enlarging the inner diameter in order to reduce its weight, there will be a large play between the bolt and the inner cylinder 100 when the bolt is inserted, and the inner cylinder will become loose when the bolt is tightened. 100 had the disadvantage of being prone to buckling. Also, inner cylinders 100 made of aluminum or plastic are known, but both have the same cross-sectional shape as the inner cylinder 100 shown in FIG. 13 and are thick. Therefore, no matter what material is used, sinks (shrinkage) occur when manufacturing with mold processing.
This causes the accuracy (uniformity of outer diameter and inner diameter) to deteriorate, and as the material cools from the surface while contracting during the cooling process during manufacturing, voids (cavities) are likely to occur in the center of the wall thickness. However, there was also the disadvantage that the strength of the ones with nests was weakened. Further, depending on the application, the diameter of the bolt to be inserted may be small and have a large outer diameter, and in this case, the wall thickness becomes even larger, the above-mentioned drawbacks become more noticeable, and the weight also increases.
そこで、この発明は、内筒の肉厚を薄くして軽量化を図
ってヒケや巣の発生を防止し、ボルト締め付は時の座屈
も生じない内筒を備えた筒形防振ゴムを提供することを
目的とするものである。Therefore, this invention has developed a cylindrical anti-vibration rubber with an inner cylinder that reduces the wall thickness of the inner cylinder to reduce weight, prevents sink marks and cavities, and prevents buckling when tightening bolts. The purpose is to provide the following.
上述の目的を達成するため、この発明は、内筒の外径は
そのままで内径を部会的に拡大して肉厚を薄くするとと
もに中心に向って突起を形成し、突起の先端側にボルト
挿通用の挿通孔を形成したものである。In order to achieve the above-mentioned object, the present invention partially enlarges the inner diameter of the inner cylinder to reduce the wall thickness while keeping the outer diameter unchanged, forms a protrusion toward the center, and inserts a bolt into the tip of the protrusion. A general-purpose insertion hole is formed.
突起の先端側と内筒の内周面の一部とでボルトの外径に
相当する挿通孔を形成し、あるいは複数の突起の先端側
に囲まれた個所に挿通孔を形成し、さらにまた突起の先
端側にボルトが挿通される筒部を形成することで、内筒
の肉厚が薄くなることで軽量化が図られ、ボルト挿入時
のガタも抑止される。また、肉厚を薄くすることでヒケ
や巣の発生もない。さらに、肉厚が薄くても突起の存在
が補強リブの機能を果たすことによりボルト締め付は時
に内筒が座屈するおそれもない。An insertion hole corresponding to the outer diameter of the bolt is formed between the tip side of the protrusion and a part of the inner circumferential surface of the inner cylinder, or an insertion hole is formed at a location surrounded by the tip side of the plurality of protrusions, and By forming a cylindrical portion on the tip side of the protrusion into which the bolt is inserted, the thickness of the inner cylinder is reduced, which reduces weight and prevents rattling when the bolt is inserted. Also, by reducing the wall thickness, sink marks and nests will not occur. Furthermore, even if the wall thickness is thin, the presence of the protrusions functions as reinforcing ribs, so there is no risk of buckling of the inner cylinder when tightening the bolts.
以下に、この発明の好適な実施例を図面を参照にして説
明する。Preferred embodiments of the present invention will be described below with reference to the drawings.
第１図において外筒１と内筒３との間にゴム２を加硫接
着して筒形防振ゴムを構成しである。内筒３の外径はそ
のままで内径を部分的に拡大して肉厚を薄くするととも
に中心に向かって３本の突起４を形成しである。この３
本の突起４の先端側で囲まれた個所にボルト挿通用の挿
通孔５を形成しである。このボルト挿通用の挿通孔５に
はボルト６が挿通される。３本の突起４の間に形成され
る３個所の空隙部７の存在により、内筒３は肉厚が薄く
なるとともに軽量化される。In FIG. 1, rubber 2 is vulcanized and bonded between an outer cylinder 1 and an inner cylinder 3 to form a cylindrical anti-vibration rubber. The inner diameter of the inner cylinder 3 is kept the same, but the inner diameter is partially enlarged to reduce the wall thickness, and three protrusions 4 are formed toward the center. This 3
An insertion hole 5 for inserting a bolt is formed in a portion surrounded by the tip side of the protrusion 4 of the book. A bolt 6 is inserted into the bolt insertion hole 5. Due to the presence of the three voids 7 formed between the three protrusions 4, the inner cylinder 3 is thinner and lighter in weight.
第２図は内筒３の他の変形例を示し、突起４を８本形成
したものを示す。内筒３の外径りを２０ｍｍとしたとき
、挿通孔５の直径ｄが１０ｍｍとなるように突起４を中
心に向けて形成しである。また、突起４が形成されてい
ない個所の内筒３の肉厚ｔは２ｍｍとした。また、突起
４の突出する長さｌは５ｍｍとした。肉厚ｔは１〜３ｍ
ｍが望ましい。FIG. 2 shows another modification of the inner cylinder 3, in which eight projections 4 are formed. When the outer diameter of the inner cylinder 3 is 20 mm, the protrusion 4 is formed so as to face the center so that the diameter d of the insertion hole 5 is 10 mm. Further, the wall thickness t of the inner cylinder 3 at the portion where the protrusion 4 is not formed was 2 mm. Further, the protruding length l of the protrusion 4 was set to 5 mm. Wall thickness t is 1~3m
m is desirable.
第３図は内筒３の別の変形例を示し、中心に向かって形
成された突起４の一部に円弧部８を形成したものを示し
、この円弧部８で囲まれた空間がボルト挿通用の挿通孔
５となり、この挿通孔５にボルト６が挿通され、ボルト
６と内筒３との間にガタの発生が生じないようになって
いる。FIG. 3 shows another modified example of the inner cylinder 3, in which a circular arc portion 8 is formed in a part of the protrusion 4 formed toward the center, and the space surrounded by this circular arc portion 8 is used for bolt insertion. This becomes a general-purpose insertion hole 5, and a bolt 6 is inserted into this insertion hole 5 to prevent play from occurring between the bolt 6 and the inner cylinder 3.
内筒３にストッパ９を形成した第４図に示すものでは、
ゴム２の加硫時にモールド内での内筒の回転方向への位
置決めが必要になるので、突起４の間に形成される空隙
部７の一部を他の空隙部７とは別形状とし、この別形状
の空隙部７′に挿入されるピンなどをモールド側に設け
、ピン（図示せず）がこの空隙部７′に挿入された状態
で内筒３をモールド内にモットしておけば、内筒３を簡
単に位置決めできる。In the case shown in FIG. 4 in which a stopper 9 is formed on the inner cylinder 3,
Since it is necessary to position the inner cylinder in the rotational direction within the mold when vulcanizing the rubber 2, a part of the cavity 7 formed between the protrusions 4 is shaped differently from the other cavity 7, If a pin or the like to be inserted into this differently shaped cavity 7' is provided on the mold side, and the inner cylinder 3 is placed in the mold with the pin (not shown) inserted into this cavity 7'. , the inner cylinder 3 can be easily positioned.
第５図に示す内筒３は、突起４の先端側に筒部１０を形
成したものであり、この筒部１０の孔がボルト挿通用の
挿通孔５となり、この挿通孔５にボルト６が挿通される
。この第５図に示す内筒３の突起４は軸方向に延在させ
であるが、このような加工は押出しあるいは引抜き工法
によって製造される。型加工の場合には、型の合せ面と
なる何れかの断面において型合せ面１１の個所に突起４
を形成することとなる（第６図参照）。The inner cylinder 3 shown in FIG. 5 has a cylindrical part 10 formed on the tip side of the protrusion 4, and a hole in this cylindrical part 10 becomes an insertion hole 5 for inserting a bolt, and a bolt 6 is inserted into this insertion hole 5. It is inserted. Although the protrusion 4 of the inner cylinder 3 shown in FIG. 5 extends in the axial direction, such processing is performed by extrusion or drawing. In the case of mold processing, a protrusion 4 is formed on the mold mating surface 11 in any cross section that becomes the mating surface of the mold.
(See Figure 6).
第７図及び第８図はさらに別の内、筒３の例を示し、第
９図の内筒は外周面が連続しておらず、分断されている
ものを示す。FIGS. 7 and 8 show still another example of the cylinder 3, and the inner cylinder in FIG. 9 shows one in which the outer peripheral surface is not continuous and is divided.
第１０図は挿通孔５に挿通されるボルト１２を示し、こ
のボルト１２には、キー１３を設けてあり、第１１図に
示すように例えばボディ側のブラケット１４に筒形防振
ゴムを取付ける。このボルト１２のキー１３は内筒′３
の空隙部７の１つに入り込み筒形防振ゴムの回転を防止
する。FIG. 10 shows a bolt 12 that is inserted into the insertion hole 5. This bolt 12 is provided with a key 13, and as shown in FIG. . The key 13 of this bolt 12 is the inner cylinder '3
It enters one of the cavities 7 and prevents rotation of the cylindrical anti-vibration rubber.
以上説明した何れの内筒３の材料としては、従来と同様
に鉄、アルミニウム、プラスチ１．り等が使用できる。As for the material of any of the inner cylinders 3 explained above, iron, aluminum, plastic, etc. are used as in the past. etc. can be used.
以上説明したように、この発明によれば内筒の外径はそ
のままで内径を部分的に拡大して肉厚を薄くするととも
に中心に向かって突起を形成し、突起の先端側にボルト
挿通用の挿通孔を形成したので、肉厚が薄くなる分だけ
軽量化が図れ、しかもヒケや巣の発生が防止される。ま
た、突起が補強リブの機能を果たし、ボルト締め付は時
に座屈することもない。さらに、突起間の空隙部を利用
してモールド成形時やボルト締め付は時において回転方
向の位置決めが簡単に行える。As explained above, according to the present invention, the outer diameter of the inner cylinder remains the same, the inner diameter is partially enlarged to reduce the wall thickness, and a protrusion is formed toward the center, and the tip of the protrusion is used for bolt insertion. Since the insertion hole is formed, the weight can be reduced by the thinner wall thickness, and the occurrence of sink marks and cavities can be prevented. In addition, the protrusions serve as reinforcing ribs, and the bolts do not sometimes buckle when tightened. Further, by utilizing the gaps between the protrusions, positioning in the rotational direction can be easily performed during molding or bolt tightening.
第１図はこの発明の好適な実施例を示す断面図、第２図
は内筒の別の例を示す平面図、第３図もさらに別の内筒
を例を示す平明図、第４図は別の内筒の例を示す斜視図
、第５図はさらに別の内筒の例を示す平面図、第６図は
型加工により製造される内筒の１例を示す断面図、第７
図ないし第９図はそれぞれ別の内筒の例を示す平面図、
第１０図は挿通されるボルトの一例を示す斜視図、第１
１図は第１０図に示すボルトを使用して筒形防振ゴムを
ブラケットに数例けた状態の正面図、第１２図は第１Ｉ
図における内筒とボルトとの関係を示す断面図、第１３
図は従来例を示す断面図である。
ｌ・・・外筒、
２・・・ゴム、
３・・内筒、
４・・・突起、
５・・・挿通孔、
６・・・ボルト。FIG. 1 is a sectional view showing a preferred embodiment of the present invention, FIG. 2 is a plan view showing another example of the inner cylinder, FIG. 3 is a plain view showing another example of the inner cylinder, and FIG. 4 is a plan view showing another example of the inner cylinder. 5 is a plan view showing another example of the inner cylinder; FIG. 6 is a sectional view showing an example of the inner cylinder manufactured by mold processing; and FIG.
9 to 9 are plan views showing examples of different inner cylinders,
FIG. 10 is a perspective view showing an example of the bolt inserted, the first
Figure 1 is a front view of several cylindrical anti-vibration rubber brackets attached using the bolts shown in Figure 10, and Figure 12 is a front view of the 1I
Cross-sectional view showing the relationship between the inner cylinder and the bolt in the figure, No. 13
The figure is a sectional view showing a conventional example. l...outer cylinder, 2...rubber, 3...inner cylinder, 4...protrusion, 5...insertion hole, 6...bolt.
Claims (1)
ムにおいて、 内筒の外径はそのままで内径を部分的に拡大して肉厚を
薄くするとともに中心に向って突起を形成し、 突起の先端側にボルト挿通用の挿通孔を形成したことを
特徴とする筒形防振ゴム。[Scope of Claims] 1. In a cylindrical anti-vibration rubber in which rubber is vulcanized and bonded between an inner cylinder and an outer cylinder, the inner diameter is partially enlarged to reduce the wall thickness while the outer diameter of the inner cylinder remains the same. A cylindrical anti-vibration rubber characterized in that a protrusion is formed toward the center, and an insertion hole for inserting a bolt is formed at the tip of the protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29248790A JPH04165134A (en) | 1990-10-30 | 1990-10-30 | Vibration proof rubber of cylindrical shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29248790A JPH04165134A (en) | 1990-10-30 | 1990-10-30 | Vibration proof rubber of cylindrical shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04165134A true JPH04165134A (en) | 1992-06-10 |
Family
ID=17782457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29248790A Pending JPH04165134A (en) | 1990-10-30 | 1990-10-30 | Vibration proof rubber of cylindrical shape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04165134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1047433A (en) * | 1996-08-01 | 1998-02-20 | Toyoda Gosei Co Ltd | Suspension bushing |
| JP2010053993A (en) * | 2008-08-29 | 2010-03-11 | Daiwa Kasei Kogyo Kk | Two-member assembling structure |
-
1990
- 1990-10-30 JP JP29248790A patent/JPH04165134A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1047433A (en) * | 1996-08-01 | 1998-02-20 | Toyoda Gosei Co Ltd | Suspension bushing |
| JP2010053993A (en) * | 2008-08-29 | 2010-03-11 | Daiwa Kasei Kogyo Kk | Two-member assembling structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3308787B2 (en) | Radiator support | |
| JP3464862B2 (en) | Cylindrical mounting device and method of manufacturing the same | |
| US20080161141A1 (en) | Water pump pulley for cooling system of vehicle | |
| JPH04165134A (en) | Vibration proof rubber of cylindrical shape | |
| JP3901294B2 (en) | Plastic pipe member | |
| JPH05141462A (en) | Tube-shaped vibration-proof rubber | |
| KR950013205B1 (en) | Method of manufacturing cylinder block of engine | |
| JP3792079B2 (en) | Pin-shaped bracket and manufacturing method thereof | |
| JPH1061641A (en) | Resin part attaching structure for metallc molding | |
| JP2001334357A (en) | Cast-in product | |
| JPH09217661A (en) | Intake manifold and manufacture thereof | |
| JPH0949548A (en) | Damper | |
| KR101925134B1 (en) | Motor mount bracket of plastic material | |
| JPH05272355A (en) | Support bracket and method of manufacture | |
| JPH0389036A (en) | Fixing method of vibration isolating bushing | |
| JP2003237382A (en) | Vehicular vibration isolator | |
| CN112236604B (en) | Rubber bearing | |
| JPH1082442A (en) | Vibration control device | |
| JPH0669468U (en) | Engine support structure | |
| KR100357791B1 (en) | Out side mirror frame for automobile | |
| JP4323109B2 (en) | Anti-vibration bushing manufacturing method | |
| JPH08296681A (en) | Antivibration device | |
| JP2001150442A (en) | Attaching structure of mold for vulcanizing and molding tire | |
| KR20180076788A (en) | Roll mount bracket of plastic material | |
| JPH04129907U (en) | Synthetic resin molded product with bolt insertion holes |