JPS5912247Y2 - Seal ring for bridge sliding bearings that prevents rubber from extruding - Google Patents

Description

【考案の詳細な説明】 本考案はゴムのはみ出し防止型橋梁滑り支承用シールリ
ングにかかる。[Detailed Description of the Invention] The present invention relates to a rubber extrusion-preventing seal ring for bridge sliding bearings.

そしてその目的はゴム製環状本体の軸線方向の一端面に
上沓との間の摩擦抵抗を軽減させて橋桁移動時のリング
の変形を防ぐ滑り加工部を設けた場合に、上沓に橋桁を
取付けた際の荷重により、又は橋桁の撓みにより、滑り
加工部がゴム製本体を内外方へ押し除けながらこの本体
内にもぐり込み、押し除けられた部分のゴムが滑り加工
部と上沓との接触面より外方へふくらんで遂に上沓面に
接触し、滑り加工部の無い従来のシールリングと同様に
橋桁移動時上沓との摩擦抵抗により変形してシールリン
グと上沓間に隙間を現出し、ここを通り雨水や塵埃等が
ベアリング内に入ってベアリング機能を損うのを防ごう
とするものである。The purpose of this is that when a sliding part is provided on one end surface in the axial direction of the rubber annular body to reduce the frictional resistance between it and the upper shoe and prevent deformation of the ring when moving the bridge girder, the bridge girder can be attached to the upper shoe. Due to the load at the time of installation or due to the deflection of the bridge girder, the sliding part pushes the rubber body inwards and outwards and crawls into this main body, and the rubber in the pushed part moves between the sliding part and the upper shoe. It bulges outward from the contact surface and finally comes into contact with the upper shoe surface, and like conventional seal rings without sliding parts, it deforms due to frictional resistance with the upper shoe when the bridge girder moves, creating a gap between the seal ring and the upper shoe. This is to prevent rainwater, dust, etc. from entering the bearing and impairing the bearing's function.

本考案の構戊はゴム製環状本体の軸線方向の一端面に滑
り加工部を設けると共に断面で滑り加工部の幅に対し本
体の幅を小さく構或したことを特徴としており、これに
より滑り加工部の表面に荷重が加わってもゴムが加工部
表面より外方へははみ出さず、上沓に対しては常に滑り
加工部が接触して橋桁の移動に対する摩擦抵抗を極力少
く保ち、桁移動に伴うシールリングの変形を防ぐことが
できるものである。The structure of the present invention is characterized in that a sliding part is provided on one end surface in the axial direction of the rubber annular body, and the width of the main body is made smaller in cross section than the width of the sliding part. Even when a load is applied to the surface of the part, the rubber does not protrude outward from the surface of the processed part, and the processed part always slides against the upper shoe, keeping the frictional resistance to the movement of the bridge girder as low as possible, and preventing girder movement. This can prevent deformation of the seal ring caused by the deformation of the seal ring.

以下に本案実施の態様を図面につき詳述する。The embodiment of the present invention will be described in detail below with reference to the drawings.

なお同一符号は同一もしくは相応部分を示す。Note that the same reference numerals indicate the same or corresponding parts.

第１図で１はゴム製の円環状本体、２はこの本体１の軸
線方向上端面３に設けた滑り加工部である。In FIG. 1, 1 is a rubber annular main body, and 2 is a sliding portion provided on the upper end surface 3 of the main body 1 in the axial direction.

而して軸線を含む平面での断面で、本体１の幅Ｗが滑り
加工部２の幅Ｗ′よ−りも小さくなっている。The width W of the main body 1 is smaller than the width W' of the sliding portion 2 in a cross section taken along a plane including the axis.

滑り加工部を本体１の軸線方向上端面３に四弗化エチレ
ン樹脂製円環状板２１を設けて構威すると、本体１に対
し簡単に接着でき、また本体１の或形時に同時圧着を行
えば一層確実に接着できる。If the sliding part is formed by providing an annular plate 21 made of tetrafluoroethylene resin on the upper end surface 3 in the axial direction of the main body 1, it can be easily adhered to the main body 1, and it can be crimped at the same time when the main body 1 is shaped. This allows for more secure adhesion.

それで、橋桁が振動等で撓んだ際の上沓の傾きによるゴ
ム製本体１の変形にもよく追随し、剥離する恐れがほと
んどなくなる。Therefore, the rubber main body 1 can easily follow the deformation of the rubber body 1 due to the inclination of the upper shoe when the bridge girder is deflected due to vibrations, etc., and there is almost no possibility of it peeling off.

本体１の断面における幅は、本体１の上端即ち滑り加工
部２の側でこの加工部２の幅Ｗ′に適合しており、下端
では滑り加工部２がら連続する内外両面の湾曲部２２及
び２３を介して滑り加工部２の幅Ｗ′より小さくなって
いる。The width in cross section of the main body 1 is adapted to the width W' of the processed part 2 at the upper end of the main body 1, that is, on the side of the sliding part 2, and at the lower end, there are curved parts 22 on both the inner and outer surfaces that are continuous with the sliding part 2. 23, the width is smaller than the width W' of the sliding portion 2.

第３図は本案リングの別の実施例である。FIG. 3 shows another embodiment of the ring according to the present invention.

本体１は断面形状が四直角の四辺形即ち正方形又は長方
形となっており、その滑り加工部２側でこの加工部の幅
Ｗ′のほぼ中央に位置している。The main body 1 has a cross-sectional shape of a rectangular quadrilateral, that is, a square or a rectangle, and is located approximately at the center of the width W' of the processed portion on the side of the sliding portion 2.

そのため加工部２の幅Ｗ′の方向の両端部下方には空間
Ｓ１及びＳ２が用意され、本体１と加工部２との一体成
形の場合に必然的に両者の接合部外方へはみ出すばり２
４及び２５もこれらの空間Ｓ１及びＳ２内にある限り取
除く必要はない。Therefore, spaces S1 and S2 are prepared below both ends of the processed part 2 in the direction of the width W', and when the main body 1 and the processed part 2 are integrally molded, the burr 2 inevitably protrudes outward from the joint between the two.
4 and 25 do not need to be removed as long as they are within these spaces S1 and S2.

即ちばり２４及び２５を残したままでもシールリングと
しての性能を何ら損わないで、ばり取り作業が不要とな
る。That is, even if the burrs 24 and 25 remain, the performance as a seal ring is not impaired in any way, and there is no need for deburring work.

第４図は本案リングの更に別の実施例である。FIG. 4 shows yet another embodiment of the ring according to the present invention.

断面において、滑り加工部２は溝２６のあるコ字形で本
体１は四直角の四辺形即ち正方形又は長方形となってい
る。In cross section, the sliding portion 2 is U-shaped with a groove 26, and the main body 1 is a quadrilateral with four right angles, that is, a square or a rectangle.

そしてこの本体１の上端部がこの加工部２の溝２６に入
り込み、両側面を袖片２７及び２８によって覆われてい
る。The upper end of the main body 1 enters into the groove 26 of the processed portion 2, and both sides are covered by sleeve pieces 27 and 28.

そのため本体１が極度に圧縮変形しても本体１と上沓と
の直接的な接触は起こり得す、滑り加工部２の機能を完
全に発揮できる。Therefore, even if the main body 1 is extremely compressed and deformed, direct contact between the main body 1 and the upper shoe can occur, and the function of the sliding part 2 can be fully exerted.

また第３図の場合と同様にばり２９及び３０のはみ出し
量が僅がの場合は、ばり取り加工は不要である。Further, as in the case of FIG. 3, if the amount of protrusion of the burrs 29 and 30 is small, deburring is not necessary.

これらのシールリングを通常のようにベアリング支承３
１の上沓３２と下沓３３の間にベアリングプレート３４
を囲むようにセットして下沓３３に固定する。Place these seal rings in the bearing bearing 3 as usual.
A bearing plate 34 is placed between the upper shoe 32 and the lower shoe 33 of 1.
and secure it to the lower shoe 33.

橋の荷重により滑り加工部２が加圧されると本体１が圧
縮変形を生じるが、変形量が加工部２の上面より上方へ
はみ出すことはない。When the sliding part 2 is pressurized by the load of the bridge, the main body 1 undergoes compressive deformation, but the amount of deformation does not exceed the upper surface of the working part 2.

また橋桁の伸縮により上沓３２が移動すると本体１の上
面の滑り加工部２が上沓３２に接触していても、本体１
を過大に変形させる程の摩擦力が作用せず、上沓３２と
加工部２の間に隙間が生じない。Furthermore, when the upper shoe 32 moves due to expansion and contraction of the bridge girder, even if the sliding part 2 on the upper surface of the main body 1 is in contact with the upper shoe 32, the main body 1
Frictional force that causes excessive deformation does not act, and no gap is created between the upper shoe 32 and the processed part 2.

本考案によればゴム製環状本体の軸線方向の一端面に滑
り加工部を設けると共に断面で滑り加工部の幅に対し本
体の幅を小さく構成したので、沓完或時の荷重により本
体が圧縮変形を起こしてもその変形量が滑り加工部の表
面より外方へはみ出ることはなく、上沓には常にこの加
工部を当接させて橋桁移動の際の本体の過大な変形を防
いでベアリング支承内への雨水や塵埃等の入り込みを防
ぎ、長期にわたり支承機能を完全に果させることができ
る効果がある。According to the present invention, a sliding part is provided on one end surface in the axial direction of the rubber annular body, and the width of the main body is made smaller in cross section than the width of the sliding part, so that the main body is compressed by the load when the shoe is completed. Even if deformation occurs, the amount of deformation will not protrude outward from the surface of the sliding processed part, and this processed part is always in contact with the upper shoe to prevent excessive deformation of the main body when moving the bridge girder. This has the effect of preventing rainwater, dust, etc. from entering the bearing, and allowing the bearing to fully perform its function over a long period of time.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案にかかるシールリングの具体例を示す部
分切欠斜面図、第２図はこのリングを支承に使用した状
態の部分切断側面図、第３図は本案シールリングの別の
態様を示す部分切欠斜面図、第４図は同更に別の態様の
部分切欠斜面図である。 １・・・・・・ゴム製環状本体、２・・・・・・滑り加
工部、２１・・・・・・四弗化エチレン樹脂製円環状板
、２２ ．２３・・・・・・湾曲部、２６・・・・・・
溝。Fig. 1 is a partially cutaway side view showing a specific example of the seal ring according to the present invention, Fig. 2 is a partially cutaway side view of this ring used as a support, and Fig. 3 shows another embodiment of the seal ring of the present invention. FIG. 4 is a partially cutaway slope view of still another aspect of the same. 1...Rubber annular body, 2...Sliding part, 21...Tetrafluoroethylene resin annular plate, 22. 23... Curved portion, 26...
groove.

Claims (5)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）ゴム製環状本体の軸線方向の一端面に滑り加工部
を設けると共に断面で滑り加工部の幅に対し本体の幅を
小さく構或したことを特徴とするゴムのはみ出し防止型
橋梁滑り支承用シールリング。(1) Rubber extrusion prevention type bridge sliding bearing characterized by providing a sliding part on one end surface in the axial direction of the rubber annular body and making the width of the main body smaller in cross section than the width of the sliding part. seal ring. （２）滑’）加工部が該一端面に環状四弗化エチレン樹
脂製板を設けたものである実用新案登録請求の範囲第（
１）項記載のゴムのはみ出し防止型橋梁滑り支承用シー
ルリング。(2) The sliding part has a cyclic tetrafluoroethylene resin plate provided on the one end surface of the utility model registration claim No. (2)
A seal ring for bridge sliding bearings that prevents rubber from extruding as described in item 1). （３）断面において本体の幅は滑り加工部側でこの加工
部の幅に適合し他端側では滑り加工部側から連続する内
外両面の湾曲部を介して滑り加工部の幅より小さくなっ
ている実用新案登録請求の範囲第（１）又は（２）項記
載のゴムのはみ出し防止型橋梁滑り支承用シールリング
。(3) In the cross section, the width of the main body matches the width of this processed part on the sliding processed part side, and becomes smaller than the width of the sliding processed part on the other end side through the curved parts on both the inner and outer surfaces that are continuous from the sliding processed part side. A rubber extrusion-preventing seal ring for bridge sliding bearings as set forth in claim 1 or 2 of the registered utility model. （４）断面において本体は四直角の四辺形で滑り加工部
側でこの加工部の幅のほぼ中央に位置している実用新案
登録請求の範囲第（１）又は（２）項記載のゴムのはみ
出し防止型橋梁滑り支承用シールリング。(4) The rubber body according to claim 1 or 2 of the utility model registration, wherein the main body is a rectangular quadrilateral in cross section and is located approximately at the center of the width of the sliding portion on the side of the sliding portion. Seal ring for bridge sliding bearings that prevents extrusion. （５）断面において滑り加工部は溝のあるコ字形で本体
は四直角の四辺形となり、この本体の一部がこの加工部
の溝に入り込んでいる実用新案登録請求の範囲第（１）
又は（２）項記載のゴムのはみ出し防止型橋梁滑り支承
用シールリング。(5) In cross section, the sliding part is U-shaped with a groove, and the main body is a quadrilateral with four right angles, and a part of this main body fits into the groove of this processed part.Claim No. 1 of Utility Model Registration
Or a seal ring for bridge sliding bearings that prevents rubber from extruding as described in (2).