JPS63231913A - Urethane reinforcing technique for automobile - Google Patents
Urethane reinforcing technique for automobileInfo
- Publication number
- JPS63231913A JPS63231913A JP62067309A JP6730987A JPS63231913A JP S63231913 A JPS63231913 A JP S63231913A JP 62067309 A JP62067309 A JP 62067309A JP 6730987 A JP6730987 A JP 6730987A JP S63231913 A JPS63231913 A JP S63231913A
- Authority
- JP
- Japan
- Prior art keywords
- balloonlike
- filled
- cylindrical member
- foamed urethane
- center pillar
- 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.)
- Granted
Links
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims abstract description 5
- 239000006260 foam Substances 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000005192 partition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は自動車のウレタン補強工法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a urethane reinforcing method for automobiles.
一般に、自動車の車体の骨格をなす例えばピラー等の閉
断面筒状部材に主として強度を向上する目的で所定部分
内に発泡ウレタンを充填することが行われている。例え
ば、特開昭４８−２６３１号公報参照）この場合、所定
部分にのみ発泡ウレタンを充填するため、筒状部材内に
仕切板等を設定している。Generally, a predetermined portion of a closed cross-section cylindrical member such as a pillar, which forms the frame of an automobile body, is filled with foamed urethane mainly for the purpose of improving the strength. For example, see Japanese Patent Laid-Open No. 48-2631) In this case, a partition plate or the like is provided within the cylindrical member in order to fill only a predetermined portion with foamed urethane.
しかしながら、このような従来技術にあっては、筒状部
材内に仕切板等を設定するため、原価が高くなるととも
に、重量も大きくなり、また発泡ウレタンが所定部分外
に洩れる恐れもあり、しかも大きな作業穴も必要で筒状
部材の強度を低下させるという問題点があった。However, in such conventional technology, since a partition plate or the like is set inside the cylindrical member, the cost increases, the weight increases, and there is a risk that the urethane foam may leak out of the designated area. A large working hole is also required, which poses a problem in that the strength of the cylindrical member is reduced.
本発明はこのような従来の問題点に着目してなされたも
ので、原価の低減と重量の軽減を図るとともに、発泡ウ
レタンの所定部分外への洩れを防止し、併せて筒状部材
の応力集中を防ぎかつ強度を増大するようにした自動車
のウレタン補強工法を提供することを目的とする。The present invention has been made by focusing on such conventional problems, and aims to reduce cost and weight, prevent urethane foam from leaking out of a designated area, and reduce stress in a cylindrical member. The purpose of the present invention is to provide a urethane reinforcing method for automobiles that prevents concentration and increases strength.
、本発明はかかる目的を達成するため、車体の骨格をな
す閉断面筒状部材の所定部分内に補強用発泡ウレタンを
充填するに際し、先ず前記筒状部材に開設した作業孔か
ら風船状部材をしぼんだ状態で挿入し、その後前記風船
状部材を膨脹させ前記筒状部材の内壁に密着させて充填
状態における発泡ウレタンの端部相当部にセ・ノドし、
次に上記所定部分内に発泡ウレタンを注入充填したもの
である。In order to achieve such an object, the present invention first fills a predetermined portion of a closed cross-section cylindrical member that forms the framework of a vehicle body with reinforcing foamed urethane by inserting a balloon-like member through a working hole formed in the cylindrical member. Insert the balloon-like member in a deflated state, then inflate the balloon-like member so that it comes into close contact with the inner wall of the cylindrical member, and insert it into a portion corresponding to the end of the urethane foam in the filled state,
Next, foamed urethane is injected and filled into the predetermined portion.
発泡ウレタンの端末形状は半球状であるため、閉断面筒
状部材に急激な強度変化がない。また、風船状部材は筒
状部材の内壁に完全に密着し、発泡ウレタンを所定部分
外に洩らさない。さらに、作業孔はしぼんだ風船状部材
を挿入するに足りる小さな孔で良い。Since the end shape of the urethane foam is hemispherical, there is no sudden change in strength of the closed cross-section cylindrical member. Further, the balloon-like member is completely in close contact with the inner wall of the cylindrical member, and the foamed urethane does not leak out of the predetermined portion. Further, the working hole may be small enough to insert a deflated balloon-like member.
以下図面を参照して本発明の一実施例を説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図および第２図において、１は車体、２はこの車体
１の骨格をなす閉断面筒状部材であるセンターピラーで
、センターピラーアウター２ａとセンターピラーインナ
ー２ｂとより形成されている。３はセンターピラー２内
に固設したアッパーヒンジプレースである。前記センタ
ーピラー２のセンターピラーインナー２ｂには作業孔４
が開設されており、センターピラー２の所定部分に補強
用発泡ウレタンを充填するに際しては、先ずこの作業孔
４から例えばゴム風船等の風船状部材５の本体部５ａを
しぼんだ状態で挿入し、その後外部に突出した空気注入
口５ｂから空気６を吹き込み、該風船状部材５を膨脹さ
せ、センターピラー２の内壁に密着させる。かくして風
船状部材５はセンターピラー２内の充填状態における発
泡ウレタンの端部相当部にセットされる。その後、風船
状部材５の所定部分内に図示しない注入孔から発泡ウレ
タン７を注入充填する。この場合、発泡ウレタン７は風
船状部材５によってせき止められて所定部分にのみに充
填されることとなる。発泡ウレタン７の充填後、風船状
部材５は空気を抜いて再びしぼませ、作業孔４から取り
出し再使用に備える。In FIGS. 1 and 2, 1 is a vehicle body, and 2 is a center pillar which is a closed cross-section cylindrical member forming the framework of the vehicle body 1, and is formed by a center pillar outer 2a and a center pillar inner 2b. 3 is an upper hinge place fixedly installed within the center pillar 2. A working hole 4 is provided in the center pillar inner 2b of the center pillar 2.
When filling a predetermined portion of the center pillar 2 with reinforcing urethane foam, first insert the main body 5a of a balloon-shaped member 5, such as a rubber balloon, in a deflated state through the working hole 4. Thereafter, air 6 is blown in from the air inlet 5b projecting to the outside to inflate the balloon-like member 5 and bring it into close contact with the inner wall of the center pillar 2. In this way, the balloon-like member 5 is set in a portion corresponding to the end of the urethane foam in the filled state within the center pillar 2. Thereafter, foamed urethane 7 is injected and filled into a predetermined portion of the balloon-like member 5 through an injection hole (not shown). In this case, the foamed urethane 7 is blocked by the balloon-like member 5 and is filled only into a predetermined portion. After filling the urethane foam 7, the balloon-like member 5 is deflated again by deflating the air, and is taken out from the working hole 4 and prepared for reuse.
このような本発明工法によれば、仕切り部材として使用
後は筒状部材であるセンターピラー２から再度取り出し
て繰り返し使用可能な風船状部材５を用いたので、原価
低減と重量の軽減が図れる訳である。また、発泡ウレタ
ン７の端末形状が半球状となるため、センターピラー２
に急激な強度変化がなく応力集中が防止される。さらに
風船状部材５はセンターピラー２の内壁に完全に密着す
るため、発泡ウレタン７が所定部分外に洩れることがな
く無駄がない。しかも、作業孔４はしぼんだ風船状部材
５を挿入するに足りる小さな孔で良いため、筒状部材で
あるセンターピラー２の強度が増大する訳である。According to the construction method of the present invention, the balloon-shaped member 5 is used as a partition member and can be taken out from the center pillar 2, which is a cylindrical member, and used repeatedly, so that cost reduction and weight reduction can be achieved. It is. In addition, since the end shape of the urethane foam 7 is hemispherical, the center pillar 2
There is no sudden change in strength and stress concentration is prevented. Furthermore, since the balloon-shaped member 5 is completely in close contact with the inner wall of the center pillar 2, the urethane foam 7 does not leak out of a predetermined portion, so there is no waste. Furthermore, since the working hole 4 may be small enough to insert the deflated balloon-like member 5, the strength of the center pillar 2, which is a cylindrical member, is increased.
以上説明してきたように、本発明によれば、原価の低減
と重量の軽減が図れるとともに、発泡ウレタンの所定部
分外への洩れを防止し、併せて車体の骨格をなす筒状部
材の応力集中を防ぎ、かつ強度を増大することができる
という効果がある。As explained above, according to the present invention, it is possible to reduce cost and weight, prevent urethane foam from leaking out of a designated area, and also prevent stress concentration in the cylindrical member that forms the frame of the vehicle body. This has the effect of preventing this and increasing strength.
第１図は本発明の一実施例を示す第２図のＩ−■線に沿
う断面説明図、第２図は車体の側視図である。
■・・・・・・車体、２・・・・・・センターピラー（
閉断面筒状部材）、４・・・・・・作業孔、５・・・・
・・風船状部材、７・・・・・・発泡ウレタン。FIG. 1 is an explanatory cross-sectional view taken along line I--■ in FIG. 2 showing one embodiment of the present invention, and FIG. 2 is a side view of the vehicle body. ■・・・Car body, 2・・・Center pillar (
closed cross-section cylindrical member), 4... working hole, 5...
...Balloon-shaped member, 7...Urethane foam.
Claims (1)
発泡ウレタンを充填するに際し、先ず前記筒状部材に開
設した作業孔から風船状部材をしぼんだ状態で挿入し、
その後前記風船状部材を膨脹させ前記筒状部材の内壁に
密着させて充填状態における発泡ウレタンの端部相当部
にセットし、次に上記所定部分内に発泡ウレタンを注入
充填したことを特徴とする自動車のウレタン補強工法。When filling a predetermined portion of a closed cross-section cylindrical member that forms the framework of the vehicle body with reinforcing urethane foam, first insert a deflated balloon-like member through a working hole made in the cylindrical member;
Thereafter, the balloon-like member is inflated and brought into close contact with the inner wall of the cylindrical member, and set at a portion corresponding to the end of the urethane foam in the filled state, and then the urethane foam is injected and filled into the predetermined portion. Urethane reinforcement method for automobiles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62067309A JPH082540B2 (en) | 1987-03-20 | 1987-03-20 | Urethane reinforcement method for automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62067309A JPH082540B2 (en) | 1987-03-20 | 1987-03-20 | Urethane reinforcement method for automobiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63231913A true JPS63231913A (en) | 1988-09-28 |
| JPH082540B2 JPH082540B2 (en) | 1996-01-17 |
Family
ID=13341282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62067309A Expired - Lifetime JPH082540B2 (en) | 1987-03-20 | 1987-03-20 | Urethane reinforcement method for automobiles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082540B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2684633A1 (en) * | 1991-12-05 | 1993-06-11 | Peugeot | Method for sealing off a hollow body of elongate overall shape, such as, particularly, a side rail or cross member of a motor vehicle |
| US6474726B1 (en) | 1999-08-05 | 2002-11-05 | Mazda Motor Corporation | Automobile bodyshell frame structure |
| KR100475790B1 (en) * | 2002-09-02 | 2005-03-10 | 기아자동차주식회사 | Pillar trim for absorbing an impact for a vehicle |
| US7484946B2 (en) | 2005-08-19 | 2009-02-03 | Zephyros, Inc. | Method and assembly for locating material within a structure |
-
1987
- 1987-03-20 JP JP62067309A patent/JPH082540B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2684633A1 (en) * | 1991-12-05 | 1993-06-11 | Peugeot | Method for sealing off a hollow body of elongate overall shape, such as, particularly, a side rail or cross member of a motor vehicle |
| US6474726B1 (en) | 1999-08-05 | 2002-11-05 | Mazda Motor Corporation | Automobile bodyshell frame structure |
| KR100475790B1 (en) * | 2002-09-02 | 2005-03-10 | 기아자동차주식회사 | Pillar trim for absorbing an impact for a vehicle |
| US7484946B2 (en) | 2005-08-19 | 2009-02-03 | Zephyros, Inc. | Method and assembly for locating material within a structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH082540B2 (en) | 1996-01-17 |
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