JP4130446B2 - Suction hollow structure - Google Patents

Suction hollow structure Download PDF

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JP4130446B2
JP4130446B2 JP2005129825A JP2005129825A JP4130446B2 JP 4130446 B2 JP4130446 B2 JP 4130446B2 JP 2005129825 A JP2005129825 A JP 2005129825A JP 2005129825 A JP2005129825 A JP 2005129825A JP 4130446 B2 JP4130446 B2 JP 4130446B2
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suction tube
caulking
suction
hollow structure
filter
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尚 川村
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株式会社汎建製作所
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Description

本発明は、サクション中空構造体に関する。   The present invention relates to a suction hollow structure.

一般に、油圧機器の作動油等は、使用中に混入する不純物（金属粉・異物等）を除去するため、フィルターを通すように構成されている（例えば、特許文献１参照）。   In general, hydraulic oil and the like of hydraulic equipment are configured to pass through a filter in order to remove impurities (metal powder, foreign matter, etc.) mixed during use (see, for example, Patent Document 1).

しかし、フィルターを通過させるタンク内に設置される複数の部材が、相互に溶接されており、フィルターを通過した作動油等に、フィルター通過後まもなく、溶接部からの不純物（酸化被膜等）が混入してしまうという欠点があった。
特開２００２−２１８０３号公報 However, multiple members installed in the tank that allows the filter to pass through are welded to each other, and impurities (oxide film, etc.) from the welded part are mixed into the hydraulic oil that has passed through the filter soon after passing through the filter. There was a drawback that it would.
JP 2002-21803 A

解決しようとする課題は、フィルター通過後まもなく、作動油等に溶接部からの不純物が混入する点である。   The problem to be solved is that impurities from the welded portion are mixed into the hydraulic oil or the like soon after passing through the filter.

そこで、本発明に係るサクション中空構造体は、上方開口状のフィルター接続孔と、水平方向のサクションチューブ接続孔と、下方開口縁部と、を有する中空胴部と、上記下方開口縁部を施蓋する底板と、上記サクションチューブ接続孔に接続されるサクションチューブと、を備えたサクション中空構造体に於て、上記底板の外周縁と上記中空胴部の下方開口縁部とを、溶接を省略して、かしめ加工にて連結した第１かしめ部を、有し、さらに、上記サクションチューブと上記中空胴部とを、溶接を省略して、かしめ加工にて連結した第２かしめ部を、有するものである。
また、上記第１・第２かしめ部には間隙が存在せず、又は、微小間隙が存在したとしても、該微小間隙の間隙寸法が、接続されるべきフィルターの目の粗さよりも小さく設定されたものである。 Therefore, a suction hollow structure according to the present invention is provided with a hollow body having an upper opening-like filter connection hole, a horizontal suction tube connection hole, and a lower opening edge, and the lower opening edge. In a suction hollow structure including a bottom plate to be covered and a suction tube connected to the suction tube connection hole, the outer peripheral edge of the bottom plate and the lower opening edge of the hollow body are omitted from welding. And having a first caulking portion connected by caulking, and further having a second caulking portion connected by caulking, omitting welding of the suction tube and the hollow body portion. Is.
In addition, even if there is no gap in the first and second caulking portions, or there is a minute gap, the gap size of the minute gap is set smaller than the roughness of the filter to be connected. It is a thing.

本発明のサクション中空構造体によれば、不純物が除去されたフィルター通過後の清浄な作動油等に、溶接部からの不純物が混入するのを防止することができる。すなわち、フィルター通過後の清浄な作動油等をそのまま油圧作動部等に送り出すことができる。   According to the suction hollow structure of the present invention, it is possible to prevent impurities from the welded portion from being mixed into clean hydraulic oil or the like after passing through the filter from which impurities have been removed. That is, it is possible to send clean hydraulic oil or the like after passing through the filter as it is to the hydraulic operating part or the like.

図１は、本発明の第１の実施の形態の使用状態を示す。このサクション中空構造体Ｓは、油圧機器の作動油Ｘのろ過タンクＲに設置されて使用される。作動油Ｘは、図示省略のパイプから矢印Ａに示すように、ろ過タンクＲに戻る。そして、作動油Ｘは、矢印Ｂに示すように、フィルターＦを通過して、使用中に混入した不純物（図示省略）が除去される。フィルターＦは、例えば、金網や薄板積層壁から成る。その後、作動油Ｘは、矢印Ｃに示すように、サクション中空構造体Ｓの内部を流れて（90度方向変換して流れて）、再び、ろ過タンクＲの外に流出する。そして、図示省略の油圧機器の動力伝達部や潤滑部等へ流れる。   FIG. 1 shows a use state of the first embodiment of the present invention. This suction hollow structure S is used by being installed in a filtration tank R for hydraulic oil X of hydraulic equipment. The hydraulic oil X returns to the filtration tank R as shown by an arrow A from a pipe (not shown). Then, as shown by the arrow B, the hydraulic oil X passes through the filter F, and impurities (not shown) mixed during use are removed. The filter F is made of, for example, a wire mesh or a thin laminated wall. Thereafter, as indicated by an arrow C, the hydraulic oil X flows inside the suction hollow structure S (90-degree changed direction) and flows out of the filtration tank R again. And it flows to the power transmission part, lubrication part, etc. of the hydraulic equipment not shown.

図１〜図３に示すように、サクション中空構造体Ｓは、上方開口状のフィルター接続孔11と、水平方向のサクションチューブ接続孔12と、下方開口縁部13と、を有する金属製断面矩形の筒状中空胴部１を備えている。また、下方開口縁部13を施蓋する金属製底板３と、サクションチューブ接続孔12に接続される金属製サクションチューブ２と、を備えている。   As shown in FIGS. 1 to 3, the suction hollow structure S is made of a metal cross-sectional rectangle having an upper opening filter connection hole 11, a horizontal suction tube connection hole 12, and a lower opening edge 13. The cylindrical hollow body 1 is provided. Further, a metal bottom plate 3 that covers the lower opening edge 13 and a metal suction tube 2 connected to the suction tube connection hole 12 are provided.

図２・図４に示すように、底板３の外周縁４と中空胴部１の下方開口縁部13とを、溶接を省略して、かしめ加工にて連結した第１かしめ部Ｙを、有する。そして、サクションチューブ２と中空胴部１とを、溶接を省略して、かしめ加工にて連結した第２かしめ部Ｚを、有する。   As shown in FIGS. 2 and 4, the outer peripheral edge 4 of the bottom plate 3 and the lower opening edge 13 of the hollow body 1 have a first caulking portion Y that is connected by caulking while omitting welding. . And it has the 2nd crimping part Z which omitted the welding and connected the suction tube 2 and the hollow trunk | drum 1 by the crimping process.

具体的には、第１かしめ部Ｙは、底板３の外周縁４（及びその近傍部位）を、中空胴部１の外鍔状に折曲げた下方開口縁部13をサンドイッチ状となるように、折曲加工、プレス加工等にてかしめた形状とされている。第２かしめ部Ｚは、サクションチューブ２の一端２ａに段付部８をもってかしめ用薄肉部９を形成し、段付部８を中空胴部１のサクションチューブ接続孔形成壁部10に当接させつつ、かしめ用薄肉部９をサクションチューブ２の外径方向へ（外鍔状に）折曲加工、プレス加工等にてかしめた形状とされている。   Specifically, the first caulking portion Y is sandwiched with the lower opening edge 13 formed by bending the outer peripheral edge 4 (and the vicinity thereof) of the bottom plate 3 into the outer casing shape of the hollow body portion 1. The shape is caulked by bending or pressing. The second caulking portion Z forms a thin caulking portion 9 with a stepped portion 8 at one end 2 a of the suction tube 2, and the stepped portion 8 is brought into contact with the suction tube connecting hole forming wall portion 10 of the hollow body portion 1. On the other hand, the caulking thin-walled portion 9 is caulked in the outer diameter direction of the suction tube 2 (in an outer flange shape) by bending, pressing, or the like.

第１・第２かしめ部Ｙ，Ｚには間隙が存在せず、又は、微小間隙が存在したとしても、微小間隙の間隙寸法は、接続されるべきフィルターＦの目の粗さよりも小さく設定されている。なお、第１・第２かしめ部Ｙ，Ｚに微小間隙が存在したとしても、ろ過タンクＲ内なので、（ろ過タンクＲ外に）作動油Ｘが漏出することがない。   Even if there is no gap in the first and second caulking portions Y and Z, or there is a minute gap, the gap size of the minute gap is set smaller than the roughness of the filter F to be connected. ing. Even if there are minute gaps in the first and second caulking portions Y and Z, the hydraulic oil X does not leak out (outside the filtration tank R) because it is in the filtration tank R.

図２・図３・図５に示すように、サクションチューブ２の外周面５に環状帯体６が溶接されている。Ｗ1 はサクションチューブ２と環状帯体６との溶接部を示す。環状帯体６の幅方向中央部分とサクションチューブ２の間には微小間隙ｋが形成されている。なお、サクションチューブ２と環状帯体６との溶接部Ｗ1 、及び、サクションチューブ２の内周面７が十分に清浄になるような処理を予めしておく。 As shown in FIGS. 2, 3, and 5, an annular band 6 is welded to the outer peripheral surface 5 of the suction tube 2. W 1 indicates a welded portion between the suction tube 2 and the annular band 6. A minute gap k is formed between the central portion in the width direction of the annular band 6 and the suction tube 2. Incidentally, the welded portion W 1 of the suction tube 2 and the annular band member 6, and the inner peripheral surface 7 of the suction tube 2 is previously processed such that a sufficiently clean.

図１・図５に示すように、環状帯体６に、ろ過タンクＲのタンク本体Ｒ0 が溶接されている。Ｗ2 は環状帯体６とタンク本体Ｒ0 との溶接部を示す。この溶接は、現場等に於て、サクション中空構造体をろ過タンクＲに設置するときに行なわれるものであって、当然ながら、上述のサクションチューブ２と環状帯体６との溶接より後に行なわれる。 As shown in FIGS. 1 and 5, the tank body R 0 of the filtration tank R is welded to the annular band 6. W 2 indicates a welded portion between the annular band 6 and the tank body R 0 . This welding is performed when the suction hollow structure is installed in the filtration tank R at the site or the like, and of course, it is performed after the above-described welding of the suction tube 2 and the annular band 6. .

サクションチューブ２と環状帯体６を重ねた厚さ寸法Ｔ0 は、十分大きく設定されている。例えば、厚さ寸法Ｔ0 は、サクションチューブ２の肉厚寸法ｔの 1.5倍以上に設定されている。厚さ寸法Ｔ0 が十分に大きく、かつ、微小間隙ｋが形成されていることにより溶接部Ｗ2 を溶接するときの熱がサクションチューブ２に伝わる（矢印ｂにて示した）経路が長いので、溶接時に、サクションチューブ２の内周面７に酸化被膜が発生するのを防止することができるとともに、サクションチューブ２に粉体塗装がされていても損傷を与えることを防止できる。厚さ寸法Ｔ0 が、肉厚寸法ｔの 1.5倍未満の場合、溶接時に、サクションチューブ２の内周面７に酸化被膜が発生する虞れがあるとともに、サクションチューブ２に粉体塗装がされていると損傷を与える虞れがある。なお、溶接部Ｗ2 が十分に清浄になるような処理をするのが好ましい。 The thickness dimension T 0 where the suction tube 2 and the annular belt 6 are overlapped is set to be sufficiently large. For example, the thickness dimension T 0 is set to 1.5 times or more the wall thickness dimension t of the suction tube 2. Since the thickness dimension T 0 is sufficiently large and the minute gap k is formed, the heat is transferred to the suction tube 2 (indicated by the arrow b) when welding the welded portion W 2 is long. In addition, it is possible to prevent an oxide film from being generated on the inner peripheral surface 7 of the suction tube 2 during welding, and to prevent damage to the suction tube 2 even if powder coating is applied. If the thickness dimension T 0 is less than 1.5 times the thickness dimension t, an oxide film may be formed on the inner peripheral surface 7 of the suction tube 2 during welding, and the suction tube 2 is powder coated. There is a risk of damage. In addition, it is preferable to perform the process so that the welded portion W 2 is sufficiently cleaned.

なお、本発明は、設計変更可能であって、例えば、各部のかしめ方（かしめられた形状）は、上述のものに限定されず、種々のものであって良い。また、中空胴部１が円筒状に形成されているも良い。   The present invention can be modified in design. For example, the method of caulking each portion (crimped shape) is not limited to the above-described one, and may be various. The hollow body 1 may be formed in a cylindrical shape.

以上のように、本発明は、上方開口状のフィルター接続孔11と、水平方向のサクションチューブ接続孔12と、下方開口縁部13と、を有する中空胴部１と、下方開口縁部13を施蓋する底板３と、サクションチューブ接続孔12に接続されるサクションチューブ２と、を備えたサクション中空構造体に於て、底板３の外周縁４と中空胴部１の下方開口縁部13とを、溶接を省略して、かしめ加工にて連結した第１かしめ部Ｙを、有し、さらに、サクションチューブ２と中空胴部１とを、溶接を省略して、かしめ加工にて連結した第２かしめ部Ｚを、有するので、不純物が除去されたフィルターＦを通過した後の清浄な作動油Ｘ等に、溶接部からの不純物が混入するのを防止することができる。すなわち、フィルターＦを通過した後の清浄な作動油Ｘ等をそのまま油圧作動部等に送り出すことができる。   As described above, the present invention includes the hollow body 1 having the upper opening filter connection hole 11, the horizontal suction tube connection hole 12, and the lower opening edge 13, and the lower opening edge 13. In a suction hollow structure having a bottom plate 3 to be covered and a suction tube 2 connected to a suction tube connection hole 12, an outer peripheral edge 4 of the bottom plate 3 and a lower opening edge 13 of the hollow body 1 The first caulking portion Y is connected by caulking while omitting welding, and the suction tube 2 and the hollow body 1 are further connected by caulking while omitting welding. Since the two caulking portions Z are provided, it is possible to prevent impurities from the welded portion from being mixed into the clean hydraulic oil X after passing through the filter F from which impurities have been removed. That is, it is possible to send clean hydraulic oil X and the like after passing through the filter F to the hydraulic operating part and the like as they are.

また、第１・第２かしめ部Ｙ，Ｚには間隙が存在せず、又は、微小間隙が存在したとしても、微小間隙の間隙寸法が、接続されるべきフィルターＦの目の粗さよりも小さく設定されたので、不純物が除去されたフィルターＦを通過した後の清浄な作動油Ｘ等に、ろ過タンクＲ内のろ過前の作動油Ｘ等に含まれる不純物が混入するのを防止することができる。   In addition, there is no gap in the first and second caulking portions Y and Z, or even if there is a minute gap, the gap size of the minute gap is smaller than the coarseness of the filter F to be connected. Since it is set, it is possible to prevent impurities contained in the hydraulic oil X before filtration in the filtration tank R from being mixed into the clean hydraulic oil X after passing through the filter F from which impurities have been removed. it can.

本発明の実施の一形態の使用状態を示す断面正面図である。It is a cross-sectional front view which shows the use condition of one Embodiment of this invention. サクション中空構造体の断面正面図である。It is a section front view of a suction hollow structure. 平面図である。It is a top view. 要部拡大断面正面図である。It is a principal part expanded sectional front view. 要部拡大断面正面図である。It is a principal part expanded sectional front view.

符号の説明Explanation of symbols

１ 中空胴部
２ サクションチューブ
３ 底板
４ 外周縁
11 フィルター接続孔
12 サクションチューブ接続孔
13 下方開口縁部
Ｆ フィルター
Ｙ 第１かしめ部
Ｚ 第２かしめ部 1 hollow body 2 suction tube 3 bottom plate 4 outer periphery
11 Filter connection hole
12 Suction tube connection hole
13 Lower opening edge F Filter Y First caulking part Z Second caulking part

Claims (2)

上方開口状のフィルター接続孔（11）と、水平方向のサクションチューブ接続孔（12）と、下方開口縁部（13）と、を有する中空胴部（１）と、上記下方開口縁部（13）を施蓋する底板（３）と、上記サクションチューブ接続孔（12）に接続されるサクションチューブ（２）と、を備えたサクション中空構造体に於て、
上記底板（３）の外周縁（４）と上記中空胴部（１）の下方開口縁部（13）とを、溶接を省略して、かしめ加工にて連結した第１かしめ部（Ｙ）を、有し、
さらに、上記サクションチューブ（２）と上記中空胴部（１）とを、溶接を省略して、かしめ加工にて連結した第２かしめ部（Ｚ）を、有することを特徴とするサクション中空構造体。 A hollow body (1) having an upper opening filter connection hole (11), a horizontal suction tube connection hole (12), and a lower opening edge (13), and the lower opening edge (13 In a suction hollow structure comprising a bottom plate (3) for applying a lid) and a suction tube (2) connected to the suction tube connection hole (12),
A first caulking portion (Y) in which the outer peripheral edge (4) of the bottom plate (3) and the lower opening edge portion (13) of the hollow body portion (1) are joined by caulking while omitting welding. Have
Further, the suction hollow structure having the second caulking part (Z) in which the suction tube (2) and the hollow body part (1) are joined by caulking while omitting welding. . 上記第１・第２かしめ部（Ｙ）（Ｚ）には間隙が存在せず、又は、微小間隙が存在したとしても、該微小間隙の間隙寸法が、接続されるべきフィルター（Ｆ）の目の粗さよりも小さく設定された請求項１記載のサクション中空構造体。   Even if there is no gap in the first and second caulking portions (Y) and (Z), or there is a minute gap, the gap dimension of the minute gap is the size of the filter (F) to be connected. The suction hollow structure according to claim 1, wherein the suction hollow structure is set to be smaller than the roughness.
JP2005129825A 2005-04-27 2005-04-27 Suction hollow structure Active JP4130446B2 (en)

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