JP2011207099A - Caulking structure - Google Patents
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- JP2011207099A JP2011207099A JP2010077850A JP2010077850A JP2011207099A JP 2011207099 A JP2011207099 A JP 2011207099A JP 2010077850 A JP2010077850 A JP 2010077850A JP 2010077850 A JP2010077850 A JP 2010077850A JP 2011207099 A JP2011207099 A JP 2011207099A
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- caulking
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Abstract
Description
本発明はアルミニウム及びアルミニウム合金（以下、アルミニウム合金と総称する）と樹脂板部材とのかしめ構造に関し、特に内燃機関のシリンダーヘッドカバーに樹脂製バッフルプレートをかしめるのに適している。 The present invention relates to a caulking structure of aluminum and an aluminum alloy (hereinafter collectively referred to as an aluminum alloy) and a resin plate member, and is particularly suitable for caulking a resin baffle plate to a cylinder head cover of an internal combustion engine.
エンジンの燃焼室より漏出するブローバイガス中からオイルミストを分離回収する方法としてＰＣＶ（Ｐｏｓｉｔｉｖｅ Ｃｒａｎｋｃａｓｅ Ｖｅｎｔｉｌａｔｉｏｎ）システムが採用されている。
ＰＣＶシステムには、シリンダーヘッドカバーにＰＣＶルームを形成したものが広く採用されている。
このＰＣＶルームはアルミニウム合金製のシリンダーヘッドカバーの内側に複数の隔壁部を形成し、その上からバッフルプレートを重ね合せることで蛇行するガス通路を形成することでＰＣＶガスとオイルを分離する機能を有する（特許文献１）。
ここで従来は、シリンダーヘッドカバーをアルミニウム合金を用いたダイカスト鋳造により製造する際にかしめボス部を形成し、これに金属製のバッフルプレートをスピンカシメ固定していた。
A PCV (Positive Crankcase Ventilation) system is employed as a method for separating and collecting oil mist from blow-by gas leaking from the combustion chamber of the engine.
A PCV system in which a cylinder head cover is formed with a PCV room is widely used.
This PCV room has a function of separating PCV gas and oil by forming a plurality of partition walls inside an aluminum alloy cylinder head cover and forming a meandering gas passage by overlapping a baffle plate thereon. (Patent Document 1).
Here, conventionally, when a cylinder head cover is manufactured by die casting using an aluminum alloy, a caulking boss portion is formed, and a metal baffle plate is fixed thereto by spin caulking.
スピンカシメによるかしめ方法を、模式図４に示す。
金属製のバッフルプレート１２０に設けたかしめ穴１２１にシリンダーヘッドカバーの内側に形成したかしめボス部１１を挿通し、バッフルプレート１２０の片面がシリンダーヘッドカバーに当接するように重ね合せた状態にする。
次に、回転中心軸を所定の角度αに傾斜させた回転治具１にて押圧することで、かしめボス部の頂部を潰し、連結固定する方法である。
従って、かしめボス部の頂部は回転加圧により外部が広がるようにして潰れることになるため金属製のバッフルプレート側にも変形応力が加わる。
A schematic illustration of a caulking method by spin caulking is shown in FIG.
The caulking boss portion 11 formed inside the cylinder head cover is inserted into the caulking hole 121 provided in the metal baffle plate 120 so that one side of the baffle plate 120 is in contact with the cylinder head cover.
Next, the top part of the caulking boss part is crushed and connected and fixed by pressing the rotation center axis with the rotation jig 1 inclined at a predetermined angle α.
Accordingly, the top of the caulking boss portion is crushed so that the outside expands due to rotation and pressure, so that deformation stress is also applied to the metal baffle plate side.
近年、自動車部品のさらなる軽量化及び低コスト化のニーズが高く、バッフルプレートの樹脂化が検討されている。
しかし、予備的に試験したところ樹脂製のバッフルプレートは金属製のバッフルプレートよりも潰れに対する強度が弱く、従来の金属製のバッフルプレートと同様にかしめると樹脂製のバッフルプレートがかしめ穴部で破損したり、その後の耐久性に問題が生じたりした。
一方、かしめによるかしめボス部の潰し量を少なくすると樹脂製のバッフルプレートに固定ガタが生じる。
そこで本発明者らは、アルミニウム合金部材と樹脂板部材とのかしめ構造を精意検討した結果、本発明に至った。
In recent years, there is a great need for further weight reduction and cost reduction of automobile parts, and the use of resin for baffle plates has been studied.
However, a preliminary test showed that the resin baffle plate is less resistant to crushing than the metal baffle plate, and if it is caulked in the same way as a conventional metal baffle plate, the resin baffle plate will have a caulking hole. It was damaged or a problem occurred afterwards.
On the other hand, if the crushing amount of the caulking boss portion due to caulking is reduced, fixed play occurs on the resin baffle plate.
Therefore, the present inventors have intensively studied the caulking structure between the aluminum alloy member and the resin plate member, and as a result, have reached the present invention.
本発明は、シリンダーヘッドカバー等のアルミニウム合金部材と樹脂製バッフルプレート等の樹脂板部材とのかしめ構造であって、かしめ信頼性の高いかしめ構造の提供を目的とする。 An object of the present invention is to provide a caulking structure having high caulking reliability, which is a caulking structure of an aluminum alloy member such as a cylinder head cover and a resin plate member such as a resin baffle plate.
本発明に係るかしめ構造は、アルミニウム合金部材と樹脂板部材とのかしめ構造であって、アルミニウム合金部材は、基部から突出したかしめボス部を有し、樹脂板部材は前記かしめボス部を挿通しアルミニウム合金部材に重ね合せるためのかしめ穴を有し、当該かしめ穴は前記かしめボス部の頂部側に面取部を形成してあり、前記かしめボス部を頂部からかしめ加圧した際に生じる潰し部の少なくとも一部を前記面取部に逃がしてあることを特徴とする。
ここで面取部は、かしめ穴の内周端面部（コーナー部）を除肉したことを意味し、面取り方法はＣ面取りでもＲ面取りでもよいが面取り精度を安定させるためには、前記面取部はＣ面取り形状になっていて、面取り角度が３０±１０°であるのが良く、さらに好ましくは面取り深さが１±０．５ｍｍであるのがよい。
The caulking structure according to the present invention is a caulking structure of an aluminum alloy member and a resin plate member, and the aluminum alloy member has a caulking boss portion protruding from a base portion, and the resin plate member is inserted through the caulking boss portion. There is a caulking hole for overlapping the aluminum alloy member, the caulking hole has a chamfered portion formed on the top side of the caulking boss portion, and crushing that occurs when the caulking boss portion is caulked and pressurized from the top portion. It is characterized in that at least a part of the part is escaped to the chamfered part.
Here, the chamfered portion means that the inner peripheral end surface portion (corner portion) of the caulking hole has been thinned, and the chamfering method may be C chamfering or R chamfering. The part has a C-chamfered shape, and the chamfering angle is preferably 30 ± 10 °, and more preferably the chamfering depth is 1 ± 0.5 mm.
本発明に係るかしめ構造は、自動車部品のように振動が加わり耐久性が要求される部位に適用でき、前記アルミニウム合金部材はシリンダーヘッドカバーであり、前記樹脂板部材はバッフルプレートであるシリンダーヘッドカバーの樹脂製バッフルプレートかしめ構造であってよい。 The caulking structure according to the present invention can be applied to a part where vibration is applied and durability is required like an automobile part, the aluminum alloy member is a cylinder head cover, and the resin plate member is a baffle plate. A baffle plate caulking structure may be used.
本発明に係るかしめ構造にあっては、樹脂板部材のかしめ穴に面取りによるかしめボス部の潰し逃がし部を形成したので樹脂板のかしめ穴に過度の変形応力が生じるのを防止できるとともに固定ガタを抑えることができるので振動によるかしめ部の亀裂、破損が生じない耐久性に優れたかしめ構造が得られる。 In the caulking structure according to the present invention, since the crushing relief portion of the caulking boss portion by chamfering is formed in the caulking hole of the resin plate member, it is possible to prevent excessive deformation stress from being generated in the caulking hole of the resin plate and to fix the backlash. Therefore, it is possible to obtain a caulking structure with excellent durability that does not cause cracking or breakage of the caulking portion due to vibration.
本発明に係る実施例として図５に示すように、シリンダーヘッドカバー１０の内部（裏面）に樹脂製のバッフルプレート２０をかしめ部１１ａでかしめた例を説明する。 As an embodiment according to the present invention, an example in which a resin baffle plate 20 is caulked by a caulking portion 11a inside (back surface) of a cylinder head cover 10 will be described as shown in FIG.
図２（ａ）に樹脂製のバッフルプレート２０のかしめ穴２１の断面形状例を示す。
バッフルプレート２０は板厚ｔ０＝２〜３ｍｍであり、かしめ穴径ｄ１＝６．６ｍｍ〜７．２ｍｍ有している。
アルミニウム合金を用いてダイカスト鋳造したシリンダーヘッドカバー１０には基部から略円柱状に突出した外径ｄｏ＝約６．２ｍｍ、高さＨ＝約５ｍｍのかしめボス部１１を有する。
FIG. 2A shows an example of a cross-sectional shape of the caulking hole 21 of the resin baffle plate 20.
The baffle plate 20 has a thickness t 0 = 2 to 3 mm, and has a caulking hole diameter d 1 = 6.6 mm to 7.2 mm.
A cylinder head cover 10 die-cast using an aluminum alloy has a caulking boss portion 11 having an outer diameter do = about 6.2 mm and a height H = about 5 mm protruding from a base portion in a substantially cylindrical shape.
図２（ａ）にて、かしめ穴径ｄ１が最小になるｄ１＝６．６ｍｍにし、面取り深さｔ１＝約１ｍｍねらいにして面取り角度βを変更し、かしめ評価した結果した結果を図１の表に示す。
面取り角度β＝３０°のときのかしめ断面写真を図２（ｂ）に示し、β面取り角度β＝０°のときのかしめ断面写真を図３に示す。
この２つの写真を比較すると、バッフルプレートの面取り角度β＝３０°の図２（ｂ）では、かしめ後のボス部潰れ角度β１が約３２°で、かしめ後のボス高さＨ＝約４．７８ｍｍであり、かしめ穴径ｄ１＝６．６ｍｍ、ボス径ｄ０＝６．４８ｍｍであった。
従ってバッフルプレート２０に負荷される応力が小さく、かしめボス部１１とバッフルプレート２０のかしめ穴２１の内周面との間に空間Ｖが残っている。
これに対してバッフルプレートの面取り角度β＝０°の図３では、ボス部潰れ角度β２＝約４３°で、ボス部の外径とバッフルプレートのかしめ穴径とがｄ１でほぼ一致していた。 即ち、バッフルプレート２０のかしめ穴２１の周囲端面に応力が加わり、変形が大きくなるために前記空間Ｖが認められなくなっていた。
そこで、この空間Ｖが適切に形成されるか否かを潰し評価の結果とした。
図１の表にて潰し評価「×」はバッフルプレート２０に大きな応力が負荷されている。
「△」は空間Ｖが極くわずかしか認められない、「○」は良好、「◎」は最適と判断した。
また、表中「ガタ」はバッフルプレート２０を手で上下させると、わずかでもガタが認められた場合を「△」、ややガタが認められた場合を「×」と評価した。
なお、かしめ圧力３．５ＭＰａ、かしめ時間１．０秒にて試験した。
その結果、面取り角度β＝１５〜４５°の範囲がかしめ性に優れ、特にβ＝２０〜４０°の範囲が優れていることが明らかになった。
In FIG. 2 (a), the result of the caulking evaluation is shown by changing the chamfering angle β by setting d 1 = 6.6 mm at which the caulking hole diameter d 1 is minimized, the chamfering depth t 1 = about 1 mm. It is shown in the table of FIG.
FIG. 2B shows a caulking cross-sectional photograph when the chamfering angle β = 30 °, and FIG. 3 shows a caulking cross-sectional photograph when the chamfering angle β = 0 °.
Comparing these two photographs, in FIG. 2B where the chamfer angle β of the baffle plate is 30 °, the boss crushing angle β 1 after caulking is about 32 °, and the boss height H after caulking is about 4 The caulking hole diameter d 1 = 6.6 mm and the boss diameter d 0 = 6.48 mm.
Therefore, the stress applied to the baffle plate 20 is small, and the space V remains between the caulking boss portion 11 and the inner peripheral surface of the caulking hole 21 of the baffle plate 20.
On the other hand, in FIG. 3 where the chamfering angle β = 0 ° of the baffle plate, the boss crushing angle β 2 = about 43 °, and the outer diameter of the boss portion and the caulking hole diameter of the baffle plate substantially coincide with each other at d 1. It was. That is, stress is applied to the peripheral end face of the caulking hole 21 of the baffle plate 20 and deformation is increased, so that the space V is not recognized.
Therefore, whether or not the space V is appropriately formed is crushed and used as a result of evaluation.
In the table of FIG. 1, the crushing evaluation “×” indicates that a large stress is applied to the baffle plate 20.
“△” indicates that the space V is very small, “◯” indicates good, and “◎” indicates optimum.
Further, in the table, “back” was evaluated as “Δ” when a slight backlash was observed when the baffle plate 20 was moved up and down by hand, and “x” when a slight backlash was observed.
The test was conducted with a caulking pressure of 3.5 MPa and a caulking time of 1.0 second.
As a result, it was revealed that the chamfering angle β = 15 to 45 ° is excellent in caulking, and in particular, β = 20 to 40 ° is excellent.
１０ シリンダーヘッドカバー
１１ かしめボス
１１ａ かしめ部
２０ バッフルプレート
10 Cylinder head cover 11 Caulking boss 11a Caulking part 20 Baffle plate
Claims (4)
アルミニウム合金部材は、基部から突出したかしめボス部を有し、樹脂板部材は前記かしめボス部を挿通しアルミニウム合金部材に重ね合せるためのかしめ穴を有し、当該かしめ穴は前記かしめボス部の頂部側に面取部を形成してあり、
前記かしめボス部を頂部からかしめ加圧した際に生じる潰し部の少なくとも一部を前記面取部に逃がしてあることを特徴とするかしめ構造。 A caulking structure of an aluminum alloy member and a resin plate member,
The aluminum alloy member has a caulking boss portion protruding from the base portion, the resin plate member has an caulking hole for passing through the caulking boss portion and overlapping the aluminum alloy member, and the caulking hole is formed by the caulking boss portion. A chamfer is formed on the top side,
A caulking structure characterized in that at least a part of a crushing portion generated when the caulking boss portion is caulked and pressed from the top is released to the chamfered portion.
前記樹脂板部材はバッフルプレートであるシリンダーヘッドカバーの樹脂製バッフルかしめ構造であることを特徴とする請求項１〜３のいずれかに記載のかしめ構造。 The aluminum alloy member is a cylinder head cover;
The caulking structure according to any one of claims 1 to 3, wherein the resin plate member has a resin baffle caulking structure of a cylinder head cover which is a baffle plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010077850A JP5491253B2 (en) | 2010-03-30 | 2010-03-30 | Caulking structure |
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| JP2010077850A JP5491253B2 (en) | 2010-03-30 | 2010-03-30 | Caulking structure |
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| JP2011207099A true JP2011207099A (en) | 2011-10-20 |
| JP5491253B2 JP5491253B2 (en) | 2014-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015189174A (en) * | 2014-03-28 | 2015-11-02 | マツダ株式会社 | Joining method between metallic member and resin member, joined body produced thereby, and metallic member used therein |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421864A (en) * | 2019-08-21 | 2019-11-08 | 深圳市时代皓龘智能电子科技有限公司 | A kind of structurally waterproof press machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189424A (en) * | 1984-03-08 | 1985-09-26 | Fujitsu Ltd | Ultrasonic caulking method |
| JPH02130130A (en) * | 1988-10-28 | 1990-05-18 | Emerson Electric Co | Method of assembling workpiece by utilizing ultrasonic wave |
| JPH0589858U (en) * | 1992-05-07 | 1993-12-07 | 内山工業株式会社 | Cylindrical seal with baffle plate |
| JPH08156101A (en) * | 1994-12-12 | 1996-06-18 | Rohm Co Ltd | Apparatus for fitting shynthetic resin-made product to circuit substrate |
| JPH09203347A (en) * | 1996-01-25 | 1997-08-05 | Nissan Motor Co Ltd | Cylinder-head cover structure |
-
2010
- 2010-03-30 JP JP2010077850A patent/JP5491253B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189424A (en) * | 1984-03-08 | 1985-09-26 | Fujitsu Ltd | Ultrasonic caulking method |
| JPH02130130A (en) * | 1988-10-28 | 1990-05-18 | Emerson Electric Co | Method of assembling workpiece by utilizing ultrasonic wave |
| JPH0589858U (en) * | 1992-05-07 | 1993-12-07 | 内山工業株式会社 | Cylindrical seal with baffle plate |
| JPH08156101A (en) * | 1994-12-12 | 1996-06-18 | Rohm Co Ltd | Apparatus for fitting shynthetic resin-made product to circuit substrate |
| JPH09203347A (en) * | 1996-01-25 | 1997-08-05 | Nissan Motor Co Ltd | Cylinder-head cover structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015189174A (en) * | 2014-03-28 | 2015-11-02 | マツダ株式会社 | Joining method between metallic member and resin member, joined body produced thereby, and metallic member used therein |
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