JP3035888B2 - Steel pipe cap for thick ends - Google Patents
Steel pipe cap for thick endsInfo
- Publication number
- JP3035888B2 JP3035888B2 JP9346353A JP34635397A JP3035888B2 JP 3035888 B2 JP3035888 B2 JP 3035888B2 JP 9346353 A JP9346353 A JP 9346353A JP 34635397 A JP34635397 A JP 34635397A JP 3035888 B2 JP3035888 B2 JP 3035888B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- leaf spring
- bowl
- cap
- cap body
- 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
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Buffer Packaging (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えばコンクリー
ト型枠の組み立てに用いる端太用鋼管の端部を閉鎖する
のに用いるキャップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap used for closing an end of a steel pipe for thick ends used for assembling a concrete formwork, for example.
【０００２】[0002]
【従来の技術】一般にこの種のキャップは、例えば特開
平８−２３０９３１号公報に示されているように、端太
用鋼管内に遊挿可能な碗状部、及びこの碗状部の上端周
縁に突設されて、端太用鋼管の端縁に当接する鍔とを備
えたキャップ本体と、碗状部の底壁に取り付けた板バネ
とから成り、キャップ本体の碗状部を端太用鋼管の開口
部内に圧入することで、板バネを湾曲状に弾性変形させ
ながら、その端部を鋼管の内面に係合させて、キャップ
本体を端太用鋼管に組付け、該端太用鋼管の開口を閉鎖
するようにしている。2. Description of the Related Art In general, a cap of this type has a bowl-shaped portion which can be loosely inserted into a thick steel pipe and a peripheral edge of an upper end of the bowl-shaped portion, as disclosed in Japanese Patent Application Laid-Open No. Hei 8-230931, for example. And a leaf spring attached to the bottom wall of the bowl-shaped portion, and the bowl-shaped portion of the cap body is used for the bended portion. By press-fitting into the opening of the steel pipe, the leaf spring is elastically deformed in a curved shape, the end of which is engaged with the inner surface of the steel pipe, and the cap body is assembled to the steel pipe for thickening. To close the opening.
【０００３】ところで以上のキャップを組付けた端太用
鋼管を、降雨時に冠水する場所で使用した場合には、水
が鋼管内に侵入して溜まる不具合がある。そこで従来で
は、前記公報に開示されているように、鍔に半円筒状の
突部をプレス成形により複数個突設することで、キャッ
プを端太用鋼管の端部に組付けた時に、鋼管の端縁と前
記突部の内周面との間に水抜き通路が形成されるように
し、この水抜き通路により、端太用鋼管内に溜まった水
を端太用鋼管の外部に排出するようにしている。[0003] If the thick steel pipe with the cap attached thereto is used in a place where it is submerged during rainfall, there is a problem that water invades and accumulates in the steel pipe. Therefore, conventionally, as disclosed in the above-mentioned publication, a plurality of semi-cylindrical projections are formed on the flange by press molding, so that when the cap is assembled to the end of the thick steel pipe, the steel pipe is closed. A drain passage is formed between the end of the steel pipe and the inner peripheral surface of the protrusion, and water collected in the steel pipe is discharged to the outside of the steel pipe by the drain passage. Like that.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら以上の構
造のものでは、水抜き通路を構成する突部が鍔の上方に
突出していることから、端太用鋼管の使用時や保管時な
どにおいて、端太用鋼管の端部が壁に衝突するなどし
て、鍔に形成した突部が潰れ、該突部により形成されて
いた水抜き通路が消滅して、鋼管内の水を円滑に排出す
ることが出来なくなる不具合がある。However, in the above-mentioned structure, since the projection forming the drain passage projects above the flange, the end of the drainage pipe is used when the steel pipe is used or stored. When the end of the heavy steel pipe collides with the wall or the like, the protrusion formed on the flange is crushed, the drainage passage formed by the protrusion disappears, and the water in the steel pipe is discharged smoothly. There is a problem that can not be done.
【０００５】本発明は以上の実情に鑑みて開発したもの
であって、目的とするところは、板ばねをキャップ本体
の所定位置に位置させて、板ばねのキャップ本体への組
付けがスムーズに行えながら、しかも水抜き通路が不用
意に消滅するようなことのない端太用鋼管のキャップを
提供するにある。The present invention has been developed in view of the above circumstances. It is an object of the present invention to position a leaf spring at a predetermined position on a cap body and to smoothly attach the leaf spring to the cap body. An object of the present invention is to provide a cap of a steel pipe for thick ends which can be performed, and in which a drain passage is not inadvertently disappeared.
【０００６】[0006]
【課題を解決するための手段】以上の目的を達成するた
めに、請求項１記載の発明は、端太用鋼管１の端部開口
を閉鎖するキャップ本体２と、このキャップ本体２の底
壁２２に取り付けた板バネ３とから成り、該板バネ３の
端部を弾性変形により端太用鋼管１の内面に係合させ
て、キャップ本体２を端太用鋼管１に組付けるようにし
た端太用鋼管のキャップにおいて、キャップ本体２の底
壁２２に、プレス成形により前記板バネ３の取付け側に
突出して、キャップ本体２に対する板バネ３の取付け位
置を規制する凸部４を形成すると共に、この凸部４を一
部切り欠いて、水抜き孔５を設けたのである。SUMMARY OF THE INVENTION To achieve the above object, the invention according to claim 1 comprises a cap body 2 for closing an end opening of a steel pipe 1 for thick ends, and a bottom wall of the cap body 2. 22. The cap spring 2 is attached to the thick steel pipe 1 by elastically deforming the end of the flat spring 3 to engage with the inner surface of the thick steel pipe 1. In the cap of the steel pipe for thick ends, a convex portion 4 is formed on the bottom wall 22 of the cap body 2 by pressing to protrude toward the mounting side of the leaf spring 3 to regulate the mounting position of the leaf spring 3 with respect to the cap body 2. At the same time, the protrusion 4 was partially cut away to provide a drainage hole 5.
【０００７】また請求項２記載の発明は、請求項１記載
のキャップのキャップ本体２を、端太用鋼管１内に遊挿
可能な碗状部２ａと、この碗状部２ａの上端周縁に一体
形成されて、端太用鋼管１の端縁に当接する鍔部２ｂと
から構成して、碗状部２ａの底壁２２に板バネ３を取付
けると共に、碗状部２ａの周壁には、板バネ３の端太用
鋼管１内面への係合時、該板バネ３の当接を回避する回
避部２３を設けたのである。According to a second aspect of the present invention, the cap body 2 of the first aspect is provided with a bowl-shaped portion 2a which can be loosely inserted into the thick steel pipe 1 and a peripheral edge of an upper end of the bowl-shaped portion 2a. The plate spring 3 is attached to the bottom wall 22 of the bowl-shaped portion 2a, and is formed integrally with the flange portion 2b abutting on the edge of the thick steel pipe 1. The peripheral wall of the bowl-shaped portion 2a has: When the leaf spring 3 is engaged with the inner surface of the thick steel pipe 1, an avoiding portion 23 is provided to avoid contact of the leaf spring 3.
【０００８】[0008]
【発明の実施の形態】図に示す端太用鋼管のキャップ
は、横断面四角形とした端太用鋼管１の長さ方向端部の
開口に組付けて、該開口を閉鎖するためのものであっ
て、該キャップは、基本的には、端太用鋼管１の端部開
口を閉鎖するキャップ本体２と、このキャップ本体２の
底壁に取り付ける板バネ３とから成り、該板バネ３の長
さ方向両端部を弾性変形させて端太用鋼管１の内面に係
合させることで、キャップ本体２を端太用鋼管１に組付
けるようにしている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cap for a thick steel pipe shown in the figure is to be attached to an opening at a longitudinal end of a thick steel pipe 1 having a rectangular cross section to close the opening. The cap basically comprises a cap body 2 for closing the end opening of the thick steel pipe 1 and a leaf spring 3 attached to the bottom wall of the cap body 2. The cap main body 2 is assembled to the thick steel pipe 1 by elastically deforming both ends in the longitudinal direction and engaging the inner surface of the thick steel pipe 1.
【０００９】図に示すキャップ本体２は、端太用鋼管１
の端部の開口内に遊挿可能な平面視略四角形の碗状部２
ａと、この碗状部２ａにおける周壁２１の上端周縁に一
体形成されて、端太用鋼管１の端縁に当接する鍔部２ｂ
とを備えて成り、碗状部２ａの底壁２２を、図３に示す
ように、その周縁部から中央に向かって僅かに上方に湾
曲させている。A cap body 2 shown in FIG.
Bowl-shaped portion 2 having a substantially rectangular shape in plan view that can be loosely inserted into the opening at the end of
a and a flange portion 2b formed integrally with the upper end periphery of the peripheral wall 21 in the bowl-shaped portion 2a and in contact with the end edge of the thick steel pipe 1
As shown in FIG. 3, the bottom wall 22 of the bowl-shaped portion 2a is slightly upwardly curved from the peripheral portion toward the center.
【００１０】尚、以上のキャップ本体２は、鋼板をプレ
ス加工して製造している。また板バネ３は、その長さ方
向中央部を碗状部２ａにおける底壁２１の下面中央にリ
ベット３０で止めて、該板バネ３を僅かに撓ませながら
碗状部２ａの底壁２２に重合した状態で該碗状部２ａの
対角線に沿うように配設している。以上の構成から成る
キャップにおいて図に示す実施形態では、キャップ本体
２における碗状部２ａの底壁２２に、プレス成形により
前記板バネ３の取付け側、換言すれば底壁２２の下面よ
りも下方に突出して、キャップ本体２に対する板バネ３
の取付け位置を規制する凸部４を形成すると共に、この
凸部４を一部切り欠いて、該凸部４に水抜き孔５を設け
て、端太用鋼管１内に溜まった水を前記水抜き孔５から
外部に排出し得るようにしたのである。The above-mentioned cap body 2 is manufactured by pressing a steel plate. The leaf spring 3 is fixed to the bottom wall 22 of the bowl-shaped portion 2a while slightly bending the leaf spring 3 by fixing the leaf spring 3 at the center of the lower surface of the bottom wall 21 in the bowl-shaped portion 2a with a rivet 30. It is arranged along the diagonal line of the bowl-shaped portion 2a in a superposed state. In the embodiment shown in the figure in the cap having the above configuration, the bottom wall 22 of the bowl-shaped portion 2a of the cap body 2 is press-formed on the mounting side of the leaf spring 3, in other words, below the lower surface of the bottom wall 22. And the leaf spring 3 with respect to the cap body 2
Is formed, and a part of the convex part 4 is cut out, and a drain hole 5 is provided in the convex part 4 so that water collected in the steel pipe 1 for thick ends is removed. Thus, the water can be discharged from the drain hole 5 to the outside.
【００１１】具体的には、図１に示すように、碗状部２
ａの底壁２２に、板バネ３の一方の長辺３ａが沿う一対
の第１凸部４ａと、板バネ３の他方の長辺３ｂが沿う一
対の第２凸部４ｂとをプレス成形により形成しているの
であって、図に示す実施形態では、これら凸部４ａ・４
ｂを、プレス成形により略半球状に形成すると共に、こ
れら凸部４ａ・４ｂの前記板バネ３が沿う部位を一部切
り欠いて、これら各凸部４ａ・４ｂに水抜き孔５を設け
ている。[0011] Specifically, as shown in FIG.
A pair of first convex portions 4a along one long side 3a of the leaf spring 3 and a pair of second convex portions 4b along the other long side 3b of the leaf spring 3 are formed on the bottom wall 22 by press molding. In the embodiment shown in the drawings, these convex portions 4a and 4
b is formed into a substantially hemispherical shape by press molding, a part of the projections 4a and 4b along which the leaf spring 3 extends is cut out, and a drain hole 5 is provided in each of the projections 4a and 4b. I have.
【００１２】以上の水抜き孔５は、キャップの端太用鋼
管１への組付けに伴い、該端太用鋼管１の長手方向とほ
ぼ直交する方向に開口するように形成している。また図
に示す実施形態では、碗状部２ａの周壁２１における前
記板バネ３の長さ方向両端部と対向するコーナー部位
を、図４に示すように、底壁２２の中央に向かって内包
に傾斜させて、この傾斜部分を、板バネ３の端太用鋼管
１内面への係合時、弾性変形する該板バネ３の長さ方向
両端部が碗状部２ａに当接するのを回避させる回避部２
３としている。The drain hole 5 is formed so as to open in a direction substantially perpendicular to the longitudinal direction of the thick steel pipe 1 when the cap is attached to the thick steel pipe 1. Further, in the embodiment shown in the figure, the corner portions of the peripheral wall 21 of the bowl-shaped portion 2a facing the both ends in the longitudinal direction of the leaf spring 3 are encased toward the center of the bottom wall 22 as shown in FIG. When the inclined portion is engaged with the inner surface of the thick steel pipe 1 of the leaf spring 3, the inclined portion prevents the lengthwise ends of the leaf spring 3 that is elastically deformed from contacting the bowl-shaped portion 2a. Avoidance unit 2
It is set to 3.
【００１３】以上の構成から成るキャップにあっては、
端太用鋼管１の開口部内に圧入するに伴い、板バネ３
が、図４に示すように湾曲状に大きく弾性変形して、そ
の長さ方向両端縁が、該板バネ３の弾性復元力で端太用
鋼管１の内面に食い込み、これにより、キャップ本体２
が鋼管１から抜け外れるのを阻止するのである。ところ
で図に示す実施形態では、碗状部２ａの周壁２１に、弾
性変形する板バネ３の長さ方向両端部が碗状部２ａに当
接するのを回避させる回避部２３を設けていることか
ら、端太用鋼管１内への圧入時、板バネ３の長さ方向両
端部が、碗状部２ａの周壁２１に当接することなく、大
きく湾曲状に弾性変形して、板バネ３に十分な弾発力が
得られるので、キャップを端太用鋼管１に強固に組付け
ることが出来る。In the cap having the above structure,
With the press-fitting into the opening of the steel pipe 1 for a thick end, the leaf spring 3
As shown in FIG. 4, the elastic member is largely elastically deformed in a curved shape, and both ends in the longitudinal direction bite into the inner surface of the thick steel pipe 1 due to the elastic restoring force of the leaf spring 3, whereby the cap body 2
Is prevented from coming off from the steel pipe 1. By the way, in the embodiment shown in the figure, since the peripheral wall 21 of the bowl-shaped portion 2a is provided with the avoiding portion 23 for preventing both ends in the length direction of the elastically deformable leaf spring 3 from contacting the bowl-shaped portion 2a. At the time of press-fitting into the thick steel pipe 1, both ends in the longitudinal direction of the leaf spring 3 are elastically deformed into a large curved shape without abutting on the peripheral wall 21 of the bowl-shaped portion 2a. Since a resilient force is obtained, the cap can be firmly attached to the thick steel pipe 1.
【００１４】斯くして以上の実施形態では、碗状部２ａ
の底壁２２には、板バネ３の取付位置を規制する凸部４
を形成しているので、該板バネ３の底壁２２への取付け
時、該板バネ３を底壁２２の所定位置に容易にセッティ
ングすることが出来るし、またリベット３０に取付けら
れた板バネ３が底壁２２に対して不用意に回転するよう
なこともないのである。Thus, in the above embodiment, the bowl-shaped portion 2a
The bottom wall 22 has a convex portion 4 for regulating the mounting position of the leaf spring 3.
When the leaf spring 3 is attached to the bottom wall 22, the leaf spring 3 can be easily set at a predetermined position on the bottom wall 22, and the leaf spring 3 is attached to the rivet 30. 3 does not rotate with respect to the bottom wall 22 carelessly.
【００１５】しかも以上の実施形態では、水抜き孔５
が、底壁２２に形成した前記凸部４に開設されているの
で、例えば、端太用鋼管１の使用時や保管時などにおい
て、端太用鋼管１の端部が壁に衝突するなどしても、水
抜き孔５が潰れるような恐れがなく、鋼管１内の水を確
実に排出することが出来るし、しかもかかる水抜き孔５
が、該端太用鋼管１の長手方向とほぼ直交する方向に開
口しいることから、該水抜き孔５より端太用鋼管１内に
塵埃等が侵入し難いのである。In the above embodiment, the drain holes 5
However, since the convex portion 4 formed on the bottom wall 22 is provided, the end portion of the thick steel tube 1 collides with the wall when the thick steel tube 1 is used or stored, for example. However, there is no possibility that the drain hole 5 is crushed, and the water in the steel pipe 1 can be reliably discharged.
However, since the opening is formed in a direction substantially perpendicular to the longitudinal direction of the thick steel pipe 1, dust and the like hardly enter the steel pipe 1 from the drain hole 5.
【００１６】[0016]
【発明の効果】以上のごとく請求項１記載の発明によれ
ば、端太用鋼管１の端部開口を閉鎖するキャップ本体２
と、このキャップ本体２の底壁２２に取り付けた板バネ
３とから成り、該板バネ３の端部を弾性変形により端太
用鋼管１の内面に係合させて、キャップ本体２を端太用
鋼管１に組付けるようにした端太用鋼管のキャップにお
いて、キャップ本体２の底壁２２に、プレス成形により
前記板バネ３の取付け側に突出して、キャップ本体２に
対する板バネ３の取付け位置を規制する凸部４を形成す
ると共に、この凸部４を一部切り欠いて、水抜き孔５を
設けたことにより、板バネ３の底壁２２への取付け時、
凸部４により、板バネ３を底壁２２の所定位置に簡単に
セッティングすることが出来て、該板バネ３が底壁２２
に対して不用意に回転するのを阻止することが出来る
し、しかもこの凸部４の有効利用を図るべく、該凸部４
に水抜き孔５を設けているので、端太用鋼管１の使用時
や保管時などにおいて、端太用鋼管１の端部が他物に衝
突するなどしても、水抜き孔５が不用意に潰れるような
恐れがなく、鋼管１内の水を確実に排出することが出来
るのである。As described above, according to the first aspect of the present invention, the cap body 2 for closing the end opening of the thick steel pipe 1 is provided.
And a leaf spring 3 attached to the bottom wall 22 of the cap body 2. The end of the leaf spring 3 is engaged with the inner surface of the thick steel pipe 1 by elastic deformation so that the cap body 2 is thickened. In the cap of the thick steel pipe to be attached to the steel pipe 1, the bottom wall 22 of the cap body 2 protrudes toward the mounting side of the leaf spring 3 by press molding, and the mounting position of the leaf spring 3 with respect to the cap body 2. Is formed, the protrusion 4 is partially cut out, and the drainage hole 5 is provided, so that when the leaf spring 3 is attached to the bottom wall 22,
The convex portion 4 allows the leaf spring 3 to be easily set at a predetermined position on the bottom wall 22.
Can be prevented from rotating inadvertently with respect to
Since the drainage hole 5 is provided at the bottom, the drainage hole 5 is not damaged even if the end of the steel tube 1 collides with another object during use or storage of the steel tube 1 for fat. The water in the steel pipe 1 can be reliably discharged without fear of being easily collapsed.
【００１７】また請求項２記載の発明によれば、請求項
１記載のキャップにおいて、キャップ本体２を、端太用
鋼管１内に遊挿可能な碗状部２ａと、この碗状部２ａの
上端周縁に一体形成されて、端太用鋼管１の端縁に当接
する鍔部２ｂとから構成して、碗状部２ａの底壁２２に
板バネ３を取付けると共に、碗状部２ａの周壁には、板
バネ３の端太用鋼管１内面への係合時、該板バネ３の当
接を回避する回避部２３を設けたことにより、請求項１
記載の発明の作用効果に加え、キャップ本体２の端太用
鋼管１内への圧入時、板バネ３の長さ方向両端部を、碗
状部２ａの周壁２１に当接することなく、湾曲状に大き
く弾性変形させて、該板バネ３に十分な弾発力を発生さ
せることが出来るので、全体としてキャップを端太用鋼
管１に強固に組付けることが出来るのである。According to the second aspect of the present invention, in the cap according to the first aspect, the cap body 2 is provided with a bowl-shaped portion 2a that can be loosely inserted into the thick steel pipe 1, and the bowl-shaped portion 2a. A plate spring 3 is attached to a bottom wall 22 of the bowl-shaped portion 2a, and is formed integrally with a peripheral edge of the upper end and a flange portion 2b abutting against an edge of the thick steel pipe 1. The present invention further comprises an avoiding portion (23) for avoiding contact of the leaf spring (3) when the leaf spring (3) is engaged with the inner surface of the thick steel pipe (1).
In addition to the functions and effects of the described invention, when the cap body 2 is press-fitted into the thick steel pipe 1, both ends in the longitudinal direction of the leaf spring 3 are curved without contacting the peripheral wall 21 of the bowl-shaped portion 2 a. As a result, a sufficient elastic force can be generated in the leaf spring 3, so that the cap can be firmly assembled to the thick steel pipe 1 as a whole.
【図１】 本発明にかかるキャップの底面図。FIG. 1 is a bottom view of a cap according to the present invention.
【図２】 同、平面図。FIG. 2 is a plan view of the same.
【図３】 図１におけるＸ−Ｘ線拡大断面図。FIG. 3 is an enlarged sectional view taken along line XX in FIG. 1;
【図４】 本発明にかかるキャップを端太用鋼管に組付
けた状態での図１におけるＹ−Ｙ線断面図。FIG. 4 is a sectional view taken along the line YY in FIG. 1 in a state where the cap according to the present invention is attached to the steel pipe for thick ends.
１ 端太用鋼管 ２ キャップ本体 ２ａ 碗状部 ２ｂ 鍔部 ２２ 底壁 ２３ 回避部 ３ 板バネ ４ 凸部 ５ 水抜き孔 DESCRIPTION OF SYMBOLS 1 Thick steel pipe 2 Cap main body 2a Bow-shaped part 2b Flange part 22 Bottom wall 23 Avoidance part 3 Leaf spring 4 Convex part 5 Drain hole
Claims (2)
ャップ本体（２）と、このキャップ本体（２）の底壁
（２２）に取り付けた板バネ（３）とから成り、該板バ
ネ（３）の端部を弾性変形により端太用鋼管（１）の内
面に係合させて、キャップ本体（２）を端太用鋼管
（１）に組付けるようにした端太用鋼管のキャップにお
いて、キャップ本体（２）の底壁（２２）に、プレス成
形により前記板バネ（３）の取付け側に突出して、キャ
ップ本体（２）に対する板バネ（３）の取付け位置を規
制する凸部（４）を形成すると共に、この凸部（４）を
一部切り欠いて、水抜き孔（５）を設けていることを特
徴とする端太用鋼管のキャップ。1. A cap body (2) for closing an end opening of a thick steel pipe (1), and a leaf spring (3) attached to a bottom wall (22) of the cap body (2). An end of the leaf spring (3) is engaged with the inner surface of the thick steel pipe (1) by elastic deformation to attach the cap body (2) to the thick steel pipe (1). In a steel pipe cap, the bottom of the cap body (2) protrudes from the bottom wall (22) to the mounting side of the leaf spring (3) by press molding to regulate the mounting position of the leaf spring (3) relative to the cap body (2). A cap for a steel pipe for thick ends, wherein a convex part (4) is formed and a part of the convex part (4) is cut out to provide a drain hole (5).
内に遊挿可能な碗状部（２ａ）と、この碗状部（２ａ）
の上端周縁に一体形成されて、端太用鋼管（１）の端縁
に当接する鍔部（２ｂ）とを備え、碗状部（２ａ）の底
壁（２２）に板バネ（３）を取付けると共に、碗状部
（２ａ）の周壁には、板バネ（３）の端太用鋼管（１）
内面への係合時、該板バネ（３）の当接を回避する回避
部（２３）を設けている請求項１記載の端太用鋼管のキ
ャップ。The cap body (2) is made of a steel pipe (1) for thick ends.
A bowl-shaped part (2a) which can be inserted into the bowl, and the bowl-shaped part (2a)
And a flange portion (2b) integrally formed on an upper peripheral edge of the steel plate and abutting against an edge of the thick steel pipe (1). A leaf spring (3) is provided on a bottom wall (22) of the bowl-shaped portion (2a). At the same time, the steel pipe (1) for the end of the leaf spring (3) is attached to the peripheral wall of the bowl-shaped portion (2a).
The cap for a thick steel pipe according to claim 1, further comprising an avoiding portion (23) for avoiding abutment of the leaf spring (3) when engaging with the inner surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9346353A JP3035888B2 (en) | 1997-12-16 | 1997-12-16 | Steel pipe cap for thick ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9346353A JP3035888B2 (en) | 1997-12-16 | 1997-12-16 | Steel pipe cap for thick ends |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11172916A JPH11172916A (en) | 1999-06-29 |
| JP3035888B2 true JP3035888B2 (en) | 2000-04-24 |
Family
ID=18382843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9346353A Expired - Lifetime JP3035888B2 (en) | 1997-12-16 | 1997-12-16 | Steel pipe cap for thick ends |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3035888B2 (en) |
-
1997
- 1997-12-16 JP JP9346353A patent/JP3035888B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11172916A (en) | 1999-06-29 |
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