JP2014025423A - Engine cover mounting structure - Google Patents

Engine cover mounting structure Download PDF

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JP2014025423A
JP2014025423A JP2012166682A JP2012166682A JP2014025423A JP 2014025423 A JP2014025423 A JP 2014025423A JP 2012166682 A JP2012166682 A JP 2012166682A JP 2012166682 A JP2012166682 A JP 2012166682A JP 2014025423 A JP2014025423 A JP 2014025423A
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cap
mounting seat
engine cover
skirt
engine
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Nobuyuki Yasumi
信幸 保見
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DaikyoNishikawa Corp
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DaikyoNishikawa Corp
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Abstract

PROBLEM TO BE SOLVED: To easily perform a pressure-fitting operation and a drawing operation of a cap to and from a mounting seat, and reliably obtain a moderation feeling during pressure-fitting.SOLUTION: After a spherical head 17 and a skirt part 19 of a cap 15 are compressed to narrow width of a slit 21 and the cap is deformed in a diameter-reduction direction and inserted in a mounting seat 13, compression is cancelled and width of the slit 21 is enlarged, so as to recover original shapes of the spherical head 17 and the skirt part 19. Then, a protrusion piece 17b of the cap 15 is engaged with an engagement hole 13a of the mounting seat 13. While a constricted part 15b between the skirt part 19 and the spherical head 17 is pressurized in a radial outside direction by a swollen part 9 of an adapter 5 to enlarge width of the slit 21, the swollen part 9 is fitted with a fitting hole 15a. An engine cover 3 is mounted to an engine block 1 via the cap 15 and the adapter 5.

Description

この発明は、エンジンカバー取付構造の改良に関し、特に圧入動作を伴う取付構造に関するものである。   The present invention relates to an improvement in an engine cover mounting structure, and more particularly to a mounting structure with a press-fitting operation.

特許文献１には、エンジンカバー取付構造として、ゴム製キャップをエンジンカバーのカバー本体裏面に突設された筒状取付座に収容保持して、上記カバー本体裏面と上記キャップとの間に該キャップの移動スペースを形成し、エンジンに突設された棒状ピンの先端部分を上記キャップの嵌込み穴に圧入して嵌め込むことで、エンジンカバーを上記キャップ及びピンを介してエンジンに取り付けるようにしたエンジンカバー取付構造が開示されている。そして、エンジンカバーに加わった衝撃で上記キャップが上記移動スペースに移動することで、当該衝撃を吸収減衰するようにしている。   In Patent Document 1, as an engine cover mounting structure, a rubber cap is housed and held in a cylindrical mounting seat protruding from the back surface of the cover body of the engine cover, and the cap is interposed between the back surface of the cover body and the cap. The engine cover is attached to the engine via the cap and the pin by press-fitting and inserting the tip of the rod-shaped pin protruding from the engine into the fitting hole of the cap. An engine cover mounting structure is disclosed. The cap is moved to the moving space by an impact applied to the engine cover, so that the impact is absorbed and attenuated.

特開２００４−３００９５０号公報（段落００２４欄〜段落００２７欄、図１〜５等）JP 2004-300950 A (paragraph 0024 column to paragraph 0027 column, FIGS. 1 to 5, etc.)

ところで、上記の特許文献１の取付座は、保持孔を有する座本体と、該座本体をカバー本体裏面に連結する３つの連結部とからなっていて一側方が開放している。また、上記座本体には、上記保持孔に続く切欠部が取付座の開放側に形成されている。一方、キャップの外周面には、リング状の係合溝が形成されている。そして、この係合溝を上記座本体の切欠部に対応させてキャップを取付座に開放側から圧入することで、キャップが取付座に収容保持されている。   By the way, the mounting seat of the above-mentioned Patent Document 1 is composed of a seat body having a holding hole and three connecting portions for connecting the seat body to the back surface of the cover body, and one side is open. The seat body has a cutout portion formed on the open side of the mounting seat, following the holding hole. On the other hand, a ring-shaped engagement groove is formed on the outer peripheral surface of the cap. The cap is accommodated and held in the mounting seat by pressing the cap into the mounting seat from the open side with the engagement groove corresponding to the cutout portion of the seat body.

したがって、キャップを取付座に収容保持する際、キャップを幅の狭い切欠部を通過させるのに大きな圧入力が必要で、キャップの取付け（取付座への収容保持）に手間取るという問題がある。このことはキャップを取付座から外す引抜き作業にも言えることである。   Therefore, when the cap is accommodated and held in the mounting seat, a large pressure input is required to pass the cap through the narrow notch, and there is a problem that it takes time to mount the cap (accommodating and holding the mounting seat). This is also true for the pulling work for removing the cap from the mounting seat.

また、上記キャップはゴム製であるため、樹脂製のものに比べて軟らかく、棒状ピンの先端部分をキャップの嵌込み穴に圧入する際の手応えが小さくて圧入感、いわゆる節度感を得難く、正規の状態で圧入されているか否かの判断が付き難い。   In addition, since the cap is made of rubber, it is softer than that made of resin, the response when pressing the tip of the rod-like pin into the fitting hole of the cap is small, and it is difficult to obtain a press fit, so-called moderation feeling, It is difficult to determine whether or not it is press-fitted in a normal state.

この発明はかかる点に鑑みてなされたものであり、その目的とするところは、取付座に対するキャップの圧入作業及び引抜き作業を容易に行うとともに、圧入時の節度感を確実に得ることである。   The present invention has been made in view of such a point, and an object of the present invention is to easily perform a press-fitting operation and a pull-out operation of the cap with respect to the mounting seat and to surely obtain a feeling of moderation during the press-fitting.

上記の目的を達成するため、この発明は、キャップの素材をゴムに代えて樹脂製のものを採用するとともに、その構造を工夫したことを特徴とする。   In order to achieve the above object, the present invention employs a resin cap instead of rubber and is devised in its structure.

具体的には、この発明は、嵌込み穴を有するキャップを、エンジンカバーのカバー本体裏面に突設された筒状取付座に収容保持し、エンジンに突設された棒状取付具の先端部分を上記キャップの嵌込み穴に圧入して嵌め込み、上記エンジンカバーを上記キャップ及び取付具を介して上記エンジンに取り付けるエンジンカバー取付構造を対象とし、次のような解決手段を講じた。   Specifically, in the present invention, a cap having a fitting hole is accommodated and held in a cylindrical mounting seat protruding from the back surface of the cover body of the engine cover, and the tip end portion of the rod-shaped mounting tool protruding from the engine is disposed. The following solution was taken for an engine cover mounting structure in which the engine cover is press-fitted into the cap insertion hole, and the engine cover is attached to the engine via the cap and fixture.

すなわち、第１の発明は、上記取付座の突出端縁寄りには、係合孔が周方向に間隔をあけて複数個形成され、上記キャップは、上記係合孔に係合する突片を外面に複数個有するとともに上記嵌込み穴を内部に有する球頭部と、該球頭部から円錐状に拡がり上記嵌込み穴を外部に開放するスカート部とからなる樹脂製であり、かつ少なくとも１個のスリットが上記スカート部の端末から球頭部に亘って連続して形成され、上記取付具は、軸部と、該軸部の先端に球状に膨出形成され上記先端部分を構成する球状膨出部とからなり、上記キャップを取付座に収容保持する過程で、上記キャップの球頭部及びスカート部を圧縮して上記スリットの幅を狭めることで、当該球頭部及びスカート部を縮径方向に変形させて上記取付座に挿入し、上記球頭部及びスカート部の圧縮を解放して上記スリットの幅を拡げることで、当該球頭部及びスカート部を元の形状に復元させて上記突片を取付座の係合孔に係合させ、上記膨出部は、上記キャップのスカート部から嵌込み穴に圧入されて嵌め込まれる際、該スカート部と上記球頭部との境界部分を径外方向に押圧して上記スリットの幅を拡げながら当該境界部分を通過して上記嵌込み穴に嵌め込まれ、上記エンジンカバーを上記キャップ及び取付具を介して上記エンジンに取り付けることを特徴とする。   That is, according to the first aspect of the present invention, a plurality of engaging holes are formed at intervals in the circumferential direction near the projecting edge of the mounting seat, and the cap has a protruding piece that engages with the engaging hole. It is made of a resin including a ball head having a plurality of holes on the outer surface and having the fitting hole therein, and a skirt part that extends conically from the ball head and opens the fitting hole to the outside. A plurality of slits are formed continuously from the end of the skirt portion to the spherical head, and the fixture is formed in a spherical shape at the tip of the shaft portion and at the tip of the shaft portion to constitute the tip portion. In the process of accommodating and holding the cap in the mounting seat, the ball head and skirt are compressed by compressing the cap and the skirt to narrow the slit. The ball head is deformed in the radial direction and inserted into the mounting seat. And by releasing the compression of the skirt and expanding the width of the slit, the spherical head and the skirt are restored to their original shapes, and the projecting piece is engaged with the engagement hole of the mounting seat, and the swelling When the protruding portion is press-fitted into the fitting hole from the skirt portion of the cap and is fitted, the boundary portion is pressed while pressing the boundary portion between the skirt portion and the spherical head in the radially outward direction while expanding the width of the slit. The engine cover is attached to the engine through the cap and the fixture through the part and fitted into the fitting hole.

第２の発明は、第１の発明において、上記キャップを取付座に収容保持した状態で、上記スカート部(19)が取付座(13)の突出端縁に当接するとともに、上記球頭部と取付座内周面との間に隙間が形成され、上記突片の上下方向の厚みは、上記係合孔の上下方向の開口寸法よりも小さく設定されているとともに、上記突片の水平方向の幅は、上記係合孔の水平方向の開口寸法よりも小さく設定されて、突片と係合孔内周縁との間にも隙間が形成されていることを特徴とする。   According to a second invention, in the first invention, the skirt portion (19) is in contact with the protruding end edge of the mounting seat (13) while the cap is accommodated and held in the mounting seat, A gap is formed between the inner peripheral surface of the mounting seat, and the vertical thickness of the projecting piece is set to be smaller than the vertical dimension of the engaging hole and the horizontal direction of the projecting piece. The width is set smaller than the opening dimension in the horizontal direction of the engagement hole, and a gap is also formed between the projecting piece and the inner periphery of the engagement hole.

第３の発明は、第１又は第２の発明において、上記キャップを取付座に収容保持した状態で、上記エンジンカバーのカバー本体裏面と上記キャップの球頭部との間には、衝撃により上記突片が上記係合孔から外れた際に、上記キャップの移動を許容する移動スペースが形成されていることを特徴とする。   According to a third aspect of the present invention, in the first or second aspect, the cap is accommodated in the mounting seat, and the above-mentioned cover body back surface of the engine cover and the ball head portion of the cap are affected by an impact. A movement space that allows movement of the cap when the projecting piece is removed from the engagement hole is formed.

第１の発明によれば、キャップのスカート部の端末を指で摘んで力を加えると、キャップの球頭部及びスカート部が圧縮されてスリットの幅が狭まり、当該球頭部及びスカート部が縮径方向に変形するので、この状態で、キャップを取付座にその突出端縁側から取付座の内周面と接触することなく挿入でき、キャップの取付け（取付座への収容保持）が簡単に行える。同様にして、キャップが取付座から簡単に引き抜かれる。   According to the first invention, when a force is applied by pinching the terminal of the skirt portion of the cap with a finger, the spherical head portion and the skirt portion of the cap are compressed and the width of the slit is narrowed. Since it deforms in the direction of diameter reduction, in this state, the cap can be inserted into the mounting seat from its projecting edge side without contacting the inner peripheral surface of the mounting seat, and mounting of the cap (accommodating and holding the mounting seat) is easy. Yes. Similarly, the cap is easily pulled out from the mounting seat.

また、カバー本体の取付座に収容保持されたキャップの嵌込み穴にエンジン側の取付具の膨出部を圧入すると、キャップのスカート部と球頭部との境界部分が上記膨出部により径外方向に押圧され、該膨出部がスリットの幅を拡げながら当該境界部分を通過して上記嵌込み穴に嵌め込まれ、この嵌込みが完了すると、キャップはゴムに比べて硬い樹脂製であることから、押圧力から解放されて勢いよく元の形状に復元し、取付具の膨出部をキャップの嵌込み穴に圧入する際の確かな手応え（節度感）が得られ、エンジンカバーの正規の取付け状態が判る。   Further, when the bulging portion of the engine-side fixture is press-fitted into the fitting hole of the cap accommodated and held in the mounting seat of the cover body, the boundary portion between the cap skirt and the ball head is diametrically formed by the bulging portion. Pressed outward, the bulging portion passes through the boundary portion while expanding the width of the slit, and is fitted into the fitting hole. When this fitting is completed, the cap is made of a resin that is harder than rubber. Therefore, it is released from the pressing force and restored to its original shape vigorously, and a reliable response (moderate feeling) can be obtained when press fitting the bulging part of the fixture into the fitting hole of the cap. The installation state of can be seen.

さらに、キャップは、取付具の膨出部に対応した嵌込み穴を球頭部に有し、これに続くスカート部は、上記球頭部から円錐状に拡がって上記嵌込み穴を外部に大きく開放して内側に広い空間があるため、取付具の膨出部がスカート部の内周面を摺接してキャップの嵌込み穴にスムーズに案内される。また、取付具全体（軸部及び膨出部）がキャップの嵌込み穴内周面に接触している場合に比べて厚みが薄くて材料費が低減でき、軽量かつ安価なキャップとなる。   Further, the cap has a fitting hole corresponding to the bulging portion of the fixture in the ball head, and the skirt portion following the fitting hole expands conically from the ball head to enlarge the fitting hole to the outside. Since it is open and has a wide space inside, the bulging portion of the fixture is smoothly guided to the fitting hole of the cap by slidingly contacting the inner peripheral surface of the skirt portion. In addition, the thickness of the fixture (shaft portion and bulging portion) is thinner than that of the case where the fitting hole is in contact with the inner peripheral surface of the cap, and the material cost can be reduced, resulting in a lightweight and inexpensive cap.

第２の発明によれば、エンジンカバーの取付位置が製作誤差等により若干変動しても、球頭部と取付座内周面との間、及び上記球頭部の突片と取付座の係合孔内周縁との間にそれぞれ隙間が形成されているため、上記変動による位置ずれが吸収されてキャップの球頭部と取付座との相対位置が微調整される。この際、スカート部が取付座の突出端縁に押し付けられるため、エンジンカバーのガタツキが防止されるとともに、振動減衰能が高まる。   According to the second invention, even if the mounting position of the engine cover is slightly changed due to a manufacturing error or the like, the relationship between the ball head and the inner peripheral surface of the mounting seat, and the protrusion between the ball head and the mounting seat. Since gaps are formed between the inner peripheries of the joint holes, the positional deviation due to the fluctuation is absorbed and the relative position between the cap head and the mounting seat is finely adjusted. At this time, since the skirt portion is pressed against the protruding end edge of the mounting seat, rattling of the engine cover is prevented and the vibration damping capability is enhanced.

第３の発明によれば、エンジンカバーに衝撃が加わってキャップの球頭部の突片が取付座の係合孔から外れると、上記キャップは、取付座内の移動スペースを移動してカバー本体裏面に接近する。この際、上記突片とスカート部が取付座内周面に圧接しながら摺動するため、上記球頭部はカバー本体裏面に勢いよく当たらず、衝撃が効率良く吸収減衰される。   According to the third aspect of the invention, when the impact is applied to the engine cover and the projecting piece on the ball head of the cap is disengaged from the engagement hole of the mounting seat, the cap moves in the moving space in the mounting seat to move the cover body. Approach the back side. At this time, since the projecting piece and the skirt portion slide while being pressed against the inner peripheral surface of the mounting seat, the ball head does not strike the back surface of the cover body vigorously, and the shock is efficiently absorbed and attenuated.

実施形態に係るエンジンカバー取付構造を示す正面図である。It is a front view which shows the engine cover attachment structure which concerns on embodiment. 図１の右側面図である。It is a right view of FIG. 図２のIII −III 線における断面図である。It is sectional drawing in the III-III line of FIG. 図１のIV−IV線における断面図である。It is sectional drawing in the IV-IV line of FIG. エンジンカバーのカバー本体裏面から見た取付座を示し、（ａ）は実施形態、（ｂ）は変形例である。The attachment seat seen from the cover main body back surface of an engine cover is shown, (a) is an embodiment, (b) is a modification. 実施形態のキャップを示し、（ａ）は正面図、（ｂ）は平面図である。The cap of embodiment is shown, (a) is a front view, (b) is a top view. 実施形態において、キャップを縮径方向に変形させた状態を仮想線で、キャップを取付座に収容保持した状態を実線でそれぞれ示す断面図である。In embodiment, it is sectional drawing which shows the state which deform | transformed the cap in the diameter reduction direction by a virtual line, and the state which accommodated and hold | maintained the cap to the attachment seat by a continuous line, respectively. 実施形態において、エンジンカバーのエンジンへの取付け完了直前状態を示す断面図である。In embodiment, it is sectional drawing which shows the state just before completion of attachment to the engine of an engine cover. 実施形態において、エンジンカバーのエンジンへの取付け完了状態を示す断面図である。In embodiment, it is sectional drawing which shows the attachment completion state to the engine of an engine cover. 実施形態において、エンジンカバーに衝撃が加わった際のキャップと取付座との関係を示す断面図である。In embodiment, it is sectional drawing which shows the relationship between the cap and attachment seat when an impact is added to the engine cover.

以下、この発明の実施形態について図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１〜図４はこの発明の実施形態に係るエンジンカバー取付構造を示す。図１〜図４中、１は自動車のエンジンを構成するエンジンブロック、３は樹脂製のエンジンカバーである。上記エンジンブロック１には、棒状取付具としてのアダプター５が複数本（図では１本のみ現れる）上向きに突設され、該アダプター５は、丸棒状の軸部７と、該軸部７の先端に球状に膨出形成されアダプター５の先端部分を構成する球状膨出部９とからなる。このアダプター５は、例えば６ナイロン等からなる樹脂製や炭素鋼等からなる金属製である。   1 to 4 show an engine cover mounting structure according to an embodiment of the present invention. 1 to 4, reference numeral 1 denotes an engine block constituting an automobile engine, and 3 denotes a resin engine cover. The engine block 1 is provided with a plurality of adapters 5 (only one appears in the figure) protruding upward as rod-shaped fixtures. The adapter 5 includes a round bar-shaped shaft portion 7 and a tip of the shaft portion 7. And a spherical bulging portion 9 which is formed in a spherical shape and constitutes the tip portion of the adapter 5. The adapter 5 is made of, for example, a resin made of nylon 6 or a metal made of carbon steel or the like.

一方、上記エンジンカバー３は、カバー本体１１を備え、該カバー本体１１裏面には、エンジンブロック１に向けて開口した角筒状取付座１３が上記アダプター５に対応するように複数個（図では１個のみ現れる）下向きに一体に突設されている。   On the other hand, the engine cover 3 includes a cover main body 11, and a plurality of rectangular tube mounting seats 13 that open toward the engine block 1 correspond to the adapter 5 on the back surface of the cover main body 11 (in the drawing, FIG. (Only one appears.) Projected downward.

上記取付座１３には、球状の嵌込み穴１５ａを有するキャップ１５が収容保持されている。このキャップ１５は、例えば６ナイロン等からなる樹脂製である。そして、上記アダプター５の膨出部９を上記キャップ１５の嵌込み穴１５ａに圧入して嵌め込み、上記エンジンカバー３を上記キャップ１５及びアダプター５を介して上記エンジンブロック１に取り付け、エンジンの振動を上記キャップ１５で吸収減衰するようにしている。   The mounting seat 13 accommodates and holds a cap 15 having a spherical insertion hole 15a. The cap 15 is made of a resin made of, for example, 6 nylon. Then, the bulging portion 9 of the adapter 5 is press-fitted into the fitting hole 15 a of the cap 15, the engine cover 3 is attached to the engine block 1 via the cap 15 and the adapter 5, and the vibration of the engine is reduced. The cap 15 absorbs and attenuates.

上記取付座１３の突出端縁（下端縁）寄りには、図５（ａ）にも示すように、横長矩形の係合孔１３ａが周方向に間隔をあけて向かい合わせに２個貫通形成されている。なお、この係合孔１３ａの数は２個に限らず、３個以上であってもよい。また、取付座１３の形状も角筒状に限らず、図５（ｂ）に示す変形例のように、円筒状であってもよい。   Near the projecting end edge (lower end edge) of the mounting seat 13, as shown in FIG. 5A, two horizontally-long rectangular engagement holes 13 a are formed so as to penetrate each other at intervals in the circumferential direction. ing. Note that the number of the engagement holes 13a is not limited to two and may be three or more. Further, the shape of the mounting seat 13 is not limited to a rectangular tube shape, and may be a cylindrical shape as in the modification shown in FIG.

上記キャップ１５は、図６にも示すように、上記嵌込み穴１５ａを内部に有する球頭部１７を備え、該球頭部１７外面の１８０°反対側の上下方向中程には、張出部１７ａが２個一体に突設され、上記係合孔１３ａに係合する突片１７ｂが上記張出部１７ａに一体に水平に突設されている。この突片１７ｂは、上記張出部１７ａよりも上下方向の厚みが薄く設定され、張出部１７ａ上面と突片１７ｂ上面との境に段部１７ｃが形成されている。   As shown in FIG. 6, the cap 15 includes a spherical head 17 having the fitting hole 15 a therein. The cap 15 protrudes in the middle in the vertical direction opposite to the outer surface of the spherical head 17 by 180 °. Two portions 17a are integrally projected, and a projecting piece 17b that engages with the engagement hole 13a is integrally projected horizontally on the overhang portion 17a. The protrusion 17b is set to be thinner in the vertical direction than the protruding portion 17a, and a step portion 17c is formed at the boundary between the upper surface of the protruding portion 17a and the upper surface of the protruding piece 17b.

上記球頭部１７下端には、スカート部１９が一体に形成され、該スカート部１９は上記球頭部１７から円錐状に拡がり上記嵌込み穴１５ａを外部に大きく開放して内側に広い空間が形成され、該スカート部１９と上記球頭部１７との境界部分が括れて括れ部１５ｂを構成している。この括れ部１５ｂの内径は、上記アダプター５の膨出部９の外径よりも小さく設定されている。   A skirt portion 19 is integrally formed at the lower end of the ball head 17, and the skirt portion 19 expands in a conical shape from the ball head 17, and the fitting hole 15 a is largely opened to the outside so that a wide space is formed inside. The boundary portion between the skirt portion 19 and the spherical head portion 17 is formed to form a constricted portion 15b. The inner diameter of the constricted portion 15 b is set smaller than the outer diameter of the bulging portion 9 of the adapter 5.

そして、上記突片１７ｂを上記係合孔１３ａに係合させてキャップ１５を取付座１３に収容保持した状態で、上記球頭部１７の張出部１７ａ先端（段部１７ｃ）と取付座１３内周面との間に隙間ｃ１が形成されている（図３参照）。また、上記突片１７ｂと上記係合孔１３ａ内周縁との間にも、隙間ｃ２が形成されている（図３参照）。このために、上記突片１７ｂの上下方向の厚みｔは、上記係合孔１３ａの上下方向の開口寸法ｈ１よりも小さく設定されているとともに、上記突片１７ｂの水平方向の幅ｗは、上記係合孔１３ａの水平方向の開口寸法ｈ２よりも小さく設定されている（図２参照）。なお、図２では、上記隙間ｃ２は、突片１７ｂの上側及び左右両側に形成されていて、下側には形成されていないが、エンジンカバー３の取付位置の製作誤差等によっては、下側に隙間ｃ２が形成されたり、左右両側の一方にのみ隙間ｃ２が形成されている場合もある。   Then, with the protruding piece 17b engaged with the engaging hole 13a and the cap 15 being accommodated and held in the mounting seat 13, the tip of the protruding portion 17a (step 17c) of the ball head 17 and the mounting seat 13 are secured. A gap c1 is formed between the inner peripheral surface (see FIG. 3). A gap c2 is also formed between the protrusion 17b and the inner peripheral edge of the engagement hole 13a (see FIG. 3). For this reason, the vertical thickness t of the protruding piece 17b is set smaller than the vertical opening dimension h1 of the engaging hole 13a, and the horizontal width w of the protruding piece 17b is It is set smaller than the opening dimension h2 in the horizontal direction of the engagement hole 13a (see FIG. 2). In FIG. 2, the gap c2 is formed on the upper and left and right sides of the projecting piece 17b and not on the lower side. However, depending on the manufacturing error of the mounting position of the engine cover 3, There may be a case where the gap c2 is formed, or the gap c2 is formed only on one of the left and right sides.

また、上記キャップ１５を取付座１３に収容保持した状態で、上記エンジンカバー３のカバー本体１１裏面と上記キャップ１５の球頭部１７との間には、図１０に示すように、エンジンカバー３に加わった衝撃により上記突片１７ｂが上記係合孔１３ａから外れた際に、上記キャップ１５の上方への移動を許容する移動スペースＳが形成されている。   Further, in a state where the cap 15 is accommodated and held in the mounting seat 13, the engine cover 3 is interposed between the back surface of the cover body 11 of the engine cover 3 and the ball head 17 of the cap 15 as shown in FIG. A moving space S is formed that allows the cap 15 to move upward when the projecting piece 17b is disengaged from the engaging hole 13a due to an impact applied to the cap 15.

さらに、上記スカート部１９には、スリット２１が上記突片１７ｂ間に対応するようにスカート部１９の端末から球頭部１７上端近くに亘って連続して２個形成され、これにより、スカート部１９の端末を指で摘んで力を加えると、球頭部１７及びスカート部１９が圧縮してスリット２１の幅が狭まり、当該球頭部１７及びスカート部１９が縮径方向に変形するようになっている。なお、スリット２１の数は、２個に限らず、１個又は３個以上であってもよい。   Further, two skirt portions 19 are formed continuously from the end of the skirt portion 19 to near the upper end of the spherical head 17 so that the slits 21 correspond to the protrusions 17b. When the end of 19 is picked with a finger and a force is applied, the ball head 17 and the skirt portion 19 are compressed, the width of the slit 21 is reduced, and the ball head 17 and the skirt portion 19 are deformed in the reduced diameter direction. It has become. The number of slits 21 is not limited to two, but may be one or three or more.

そして、上記キャップ１５は、取付座１３に収容保持される過程で、球頭部１７及びスカート部１９が圧縮されてスリット２１の幅を狭めることで、当該球頭部１７及びスカート部１９が縮径方向に変形して取付座１３に挿入され、上記球頭部１７及びスカート部１９の圧縮が解放されて上記スリット２１の幅が拡がることで、当該球頭部１７及びスカート部１９が元の形状に復元して突片１７ｂが取付座１３の係合孔１３ａに係合するとともに、上記スカート部１９が取付座１３の突出端縁に当接するようになっている。   In the process of being accommodated and held in the mounting seat 13, the cap head 15 and the skirt portion 19 are compressed to reduce the width of the slit 21, so that the ball head 17 and the skirt portion 19 are contracted. It is deformed in the radial direction and inserted into the mounting seat 13, the compression of the ball head 17 and the skirt portion 19 is released, and the width of the slit 21 is expanded, so that the ball head 17 and the skirt portion 19 are restored to the original. The shape 17 is restored to engage the projecting piece 17 b with the engagement hole 13 a of the mounting seat 13, and the skirt portion 19 comes into contact with the protruding end edge of the mounting seat 13.

また、上記アダプター５の膨出部９は、上記キャップ１５のスカート部１９から嵌込み穴１５ａに圧入されて嵌め込まれる際、該スカート部１９と上記球頭部１７との間の括れ部１５ｂを径外方向に押圧して上記スリット２１の幅を拡げながら当該括れ部１５ｂを通過して上記嵌込み穴１５ａに嵌め込まれ、エンジンカバー３をキャップ１５及びアダプター５を介してエンジンブロック１に取り付けるようになっている。   Further, when the bulging portion 9 of the adapter 5 is press-fitted into the fitting hole 15a from the skirt portion 19 of the cap 15, the constricted portion 15b between the skirt portion 19 and the spherical head 17 is provided. The outer cover is pressed outwardly to increase the width of the slit 21 and pass through the constricted portion 15b to be fitted into the fitting hole 15a. The engine cover 3 is attached to the engine block 1 via the cap 15 and the adapter 5. It has become.

次に、エンジンカバー３をエンジンブロック１に取り付ける要領について説明する。   Next, a procedure for attaching the engine cover 3 to the engine block 1 will be described.

まず、キャップ１５のスカート部１９の端末を指で摘んで、キャップ１５の球頭部１７及びスカート部１９を圧縮してスリット２１の幅を狭める（図７仮想線参照）。これにより、球頭部１７及びスカート部１９が取付座１３内周面に接触しない程度まで縮径方向に変形する。   First, the end of the skirt portion 19 of the cap 15 is picked with a finger, and the ball head 17 and the skirt portion 19 of the cap 15 are compressed to narrow the width of the slit 21 (see the phantom line in FIG. 7). As a result, the spherical head 17 and the skirt portion 19 are deformed in the reduced diameter direction to the extent that they do not contact the inner peripheral surface of the mounting seat 13.

次いで、キャップ１５の球頭部１７を取付座１３内に突出端縁側から挿入し、突片１７ｂが係合孔１３ａに対応した段階で指の摘み力を緩めて、球頭部１７及びスカート部１９の圧縮を解放してスリット２１の幅を拡げ、球頭部１７及びスカート部１９を元の形状に復元させる。これにより、突片１７ｂが係合孔１３ａに係合するとともに、スカート部１９が取付座１３の突出端縁に当接し、キャップ１５が取付座１３の開口中心位置に収容保持される（図７実線参照）。この状態で、球頭部１７の張出部１７ａ先端（段部１７ｃ）と取付座１３内周面との間に隙間ｃ１が形成されている。また、突片１７ｂの上側及び左右両側と係合孔１３ａ内周縁との間にも、隙間ｃ２が形成されている。   Next, the ball head 17 of the cap 15 is inserted into the mounting seat 13 from the protruding end side, and the picking force of the finger is loosened at the stage where the protrusion 17b corresponds to the engagement hole 13a. The compression of 19 is released, the width of the slit 21 is expanded, and the ball head 17 and the skirt portion 19 are restored to their original shapes. As a result, the projecting piece 17b engages with the engaging hole 13a, the skirt portion 19 abuts against the protruding edge of the mounting seat 13, and the cap 15 is accommodated and held at the opening center position of the mounting seat 13 (FIG. 7). (See solid line). In this state, a gap c <b> 1 is formed between the tip of the protruding portion 17 a (stepped portion 17 c) of the ball head 17 and the inner peripheral surface of the mounting seat 13. A gap c2 is also formed between the upper and left and right sides of the projecting piece 17b and the inner peripheral edge of the engagement hole 13a.

その後、エンジンカバー３をエンジンブロック１の上方に配置して取付座１３をアダプター５に対応させ、図８に示すように、エンジンカバー３をエンジンブロック１に対して押し付ける。これにより、アダプター５の膨出部９がキャップ１５のスカート部１９から嵌込み穴１５ａに圧入されて嵌め込まれる。この際、膨出部９がキャップ１５の括れ部１５ｂを径外方向に押圧してスリット２１の幅を拡げながら（図８参照）、括れ部１５ｂを通過して上記嵌込み穴に嵌め込まれ、エンジンカバー３がキャップ１５及び取付座１３を介してエンジンブロック１に取り付けられる（図９参照）。なお、スカート部１９は、スリット２１の幅が拡がるに伴って縮径方向に変形し、膨出部９が嵌込み穴１５ａに嵌め込まれると、元の形状に復元する。   Thereafter, the engine cover 3 is disposed above the engine block 1 so that the mounting seat 13 corresponds to the adapter 5 and the engine cover 3 is pressed against the engine block 1 as shown in FIG. As a result, the bulging portion 9 of the adapter 5 is press-fitted from the skirt portion 19 of the cap 15 into the fitting hole 15 a and is fitted. At this time, the bulging portion 9 presses the constricted portion 15b of the cap 15 radially outward to increase the width of the slit 21 (see FIG. 8), and passes through the constricted portion 15b and is fitted into the fitting hole. The engine cover 3 is attached to the engine block 1 via the cap 15 and the attachment seat 13 (see FIG. 9). Note that the skirt portion 19 is deformed in the diameter-reducing direction as the width of the slit 21 increases, and is restored to the original shape when the bulging portion 9 is fitted into the fitting hole 15a.

一方、エンジンカバー３をエンジンブロック１から取り外すには、エンジンカバー３を上方に引っ張って持ち上げ、アダプター５の膨出部９をキャップ１５の嵌込み穴１５ａから引き抜けばよい。この際のキャップ１５の挙動は、エンジンカバー３をエンジンブロック１に取り付けるときと同じである。   On the other hand, in order to remove the engine cover 3 from the engine block 1, the engine cover 3 may be pulled upward and lifted, and the bulging portion 9 of the adapter 5 may be pulled out from the fitting hole 15 a of the cap 15. The behavior of the cap 15 at this time is the same as when the engine cover 3 is attached to the engine block 1.

このように、実施形態では、キャップ１５にスリット２１をスカート部１９の端末から球頭部１７に亘って連続して形成したので、スカート部１９の端末を指で摘んで力を加えるだけで、キャップ１５を取付座１３内周面に接触しないように縮径方向に変形させて、取付座１３に対して簡単に着脱することができる。   Thus, in the embodiment, since the slit 21 is continuously formed from the end of the skirt portion 19 to the ball head 17 in the cap 15, just by picking the end of the skirt portion 19 with a finger and applying force, The cap 15 can be easily attached to and detached from the mounting seat 13 by being deformed in the diameter reducing direction so as not to contact the inner peripheral surface of the mounting seat 13.

また、この実施形態では、キャップ１５として樹脂製のものを採用したので、キャップ１５はゴム製のものに比べて硬く、アダプター５の膨出部９をキャップ１５の嵌込み穴１５ａに圧入する際の押圧力から解放されると、勢いよく元の形状に復元し、キャップ１５の嵌込み穴１５ａに圧入する際の確かな手応え（節度感）を得ることができ、エンジンカバー３が正規の状態で取り付けられたことを確実に知ることができる。   In this embodiment, since the cap 15 is made of resin, the cap 15 is harder than that made of rubber, and when the bulging portion 9 of the adapter 5 is press-fitted into the fitting hole 15 a of the cap 15. When it is released from the pressing force, it can be restored to its original shape vigorously, and a reliable response (feeling of moderation) when press-fitted into the fitting hole 15a of the cap 15 can be obtained, and the engine cover 3 is in a normal state. You can be sure of knowing that it was attached.

さらに、この実施形態では、スカート部１９は、球頭部１７から円錐状に拡がって内側に広い空間を有しているので、アダプター５の膨出部９をスカート部１９の内周面に摺接させてキャップ１５の嵌込み穴１５ａにスムーズに案内することができる。また、アダプター５全体がキャップ１５の嵌込み穴内周面に接触している場合に比べて厚みが薄くて材料費を低減でき、軽量かつ安価なキャップ１５とすることができる。   Furthermore, in this embodiment, the skirt portion 19 extends conically from the spherical head 17 and has a wide space inside, so that the bulging portion 9 of the adapter 5 is slid onto the inner peripheral surface of the skirt portion 19. It is possible to smoothly guide the cap 15 into the fitting hole 15a. Further, the thickness of the adapter 5 can be reduced compared with the case where the entire adapter 5 is in contact with the inner peripheral surface of the fitting hole of the cap 15, the material cost can be reduced, and the light and inexpensive cap 15 can be obtained.

加えて、この実施形態では、キャップ１５を取付座１３に収容保持した状態で、キャップ１５は取付座１３の開口中心に位置し、球頭部１７の張出部１７ａ先端（段部１７ｃ）と取付座１３内周面との間に隙間ｃ１を形成し、かつ突片１７ｂの上下方向の厚みｔを、係合孔１３ａの上下方向の開口寸法ｈ１よりも小さく設定するとともに、突片１７ｂの水平方向の幅ｗを、係合孔１３ａの水平方向の開口寸法ｈ２よりも小さく設定して、突片１７ｂと係合孔１３ａ内周縁との間に隙間ｃ２を形成したので、エンジンカバー３の取付位置が製作誤差等により若干変動しても、変動による位置ずれを隙間ｃ１，ｃ２で吸収してキャップ１５の球頭部１７と取付座１３との相対位置を微調整することができる。この際、スカート部１９を取付座１３の突出端縁に押し付けているので、エンジンカバー３のガタツキを防止することができる、振動減衰能を高めることができる。   In addition, in this embodiment, the cap 15 is positioned at the center of the opening of the mounting seat 13 in a state where the cap 15 is housed and held in the mounting seat 13, and the tip of the overhanging portion 17 a (stepped portion 17 c) of the ball head 17. A clearance c1 is formed between the mounting seat 13 and the inner peripheral surface, and the vertical thickness t of the protruding piece 17b is set smaller than the vertical opening dimension h1 of the engaging hole 13a. Since the horizontal width w is set smaller than the horizontal opening dimension h2 of the engagement hole 13a and the gap c2 is formed between the projecting piece 17b and the inner peripheral edge of the engagement hole 13a, the engine cover 3 Even if the mounting position is slightly changed due to a manufacturing error or the like, the relative position between the spherical head 17 of the cap 15 and the mounting seat 13 can be finely adjusted by absorbing the position shift due to the fluctuation in the gaps c1 and c2. At this time, since the skirt portion 19 is pressed against the protruding end edge of the mounting seat 13, it is possible to prevent the engine cover 3 from rattling and to increase the vibration damping capability.

さらにまた、この実施形態では、キャップ１５を取付座１３に収容保持した状態で、エンジンカバー３のカバー本体１１裏面とキャップ１５の球頭部１７との間に移動スペースＳを形成したので、エンジンカバー３に衝撃が加わってキャップ１５の突片１７ｂが取付座１３の係合孔１３ａから外れると、キャップ１５が移動スペースＳを移動してカバー本体１１裏面に接近し、この際、突片１７ｂとスカート部１９が取付座１３内周面に圧接しながら摺動するため、球頭部１７がカバー本体１１裏面に勢いよく当たらず、衝撃を効率良く吸収減衰することができる。   Furthermore, in this embodiment, since the moving space S is formed between the back surface of the cover body 11 of the engine cover 3 and the spherical head 17 of the cap 15 in a state where the cap 15 is accommodated and held in the mounting seat 13, the engine When an impact is applied to the cover 3 and the projecting piece 17b of the cap 15 is removed from the engagement hole 13a of the mounting seat 13, the cap 15 moves through the moving space S and approaches the back surface of the cover body 11, and at this time, the projecting piece 17b Since the skirt portion 19 slides while being pressed against the inner peripheral surface of the mounting seat 13, the ball head portion 17 does not strike the back surface of the cover body 11 vigorously, and the shock can be efficiently absorbed and attenuated.

この発明は、エンジンカバーをエンジンに取り付ける取付構造について有用である。   The present invention is useful for a mounting structure for attaching an engine cover to an engine.

１ エンジンブロック（エンジン）
３ エンジンカバー
５ アダプター（取付具）
７ 軸部
９ 膨出部（取付具の先端部分）
１１ カバー本体
１３ 取付座
１３ａ 係合孔
１５ キャップ
１５ａ 嵌込み穴
１５ｂ 括れ部（境界部分）
１７ 球頭部
１７ｂ 突片
１９ スカート部
２１ スリット
ｃ１，ｃ２ 隙間
ｈ１ 係合孔の上下方向の開口寸法
ｈ２ 係合孔の水平方向の開口寸法
Ｓ 移動スペース
ｔ 突片の上下方向の厚み
ｗ 突片の水平方向の幅 1 Engine block (engine)
3 Engine cover 5 Adapter (mounting tool)
7 Shaft part 9 Swelling part (tip part of fixture)
11 Cover body 13 Mounting seat 13a Engagement hole 15 Cap 15a Insertion hole 15b Constricted part (boundary part)
17 Ball head 17b Projection piece 19 Skirt portion 21 Slit c1, c2 Gap h1 Opening dimension h2 of the engagement hole in the vertical direction Opening dimension S of the engagement hole in the horizontal direction S Movement space t Thickness in the vertical direction of the projection piece w Projection piece Horizontal width of

Claims (3)

嵌込み穴(15a)を有するキャップ(15)を、エンジンカバー(3)のカバー本体(11)裏面に突設された筒状取付座(13)に収容保持し、エンジン(1)に突設された棒状取付具(5)の先端部分を上記キャップ(15)の嵌込み穴(15a)に圧入して嵌め込み、上記エンジンカバー(3)を上記キャップ(15)及び取付具(5)を介して上記エンジン(1)に取り付けるエンジンカバー取付構造であって、
上記取付座(13)の突出端縁寄りには、係合孔(13a)が周方向に間隔をあけて複数個形成され、
上記キャップ(15)は、上記係合孔(13a)に係合する突片(17b)を外面に複数個有するとともに上記嵌込み穴(15a)を内部に有する球頭部(17)と、該球頭部(17)から円錐状に拡がり上記嵌込み穴(15a)を外部に開放するスカート部(19)とからなる樹脂製であり、かつ少なくとも１個のスリット(21)が上記スカート部(19)の端末から球頭部(17)に亘って連続して形成され、
上記取付具(5)は、軸部(7)と、該軸部(7)の先端に球状に膨出形成され上記先端部分を構成する球状膨出部(9)とからなり、
上記キャップ(15)を取付座(13)に収容保持する過程で、上記キャップ(15)の球頭部(17)及びスカート部(19)を圧縮して上記スリット(21)の幅を狭めることで、当該球頭部(17)及びスカート部(19)を縮径方向に変形させて上記取付座(13)に挿入し、上記球頭部(17)及びスカート部(19)の圧縮を解放して上記スリット(21)の幅を拡げることで、当該球頭部(17)及びスカート部(19)を元の形状に復元させて上記突片(17b)を取付座(13)の係合孔(13a)に係合させ、
上記膨出部(9)は、上記キャップ(15)のスカート部(19)から嵌込み穴(15a)に圧入されて嵌め込まれる際、該スカート部(19)と上記球頭部(17)との境界部分(15b)を径外方向に押圧して上記スリット(21)の幅を拡げながら当該境界部分(15b)を通過して上記嵌込み穴(15a)に嵌め込まれ、上記エンジンカバー(3)を上記キャップ(15)及び取付具(5)を介して上記エンジン(1)に取り付けることを特徴とするエンジンカバー取付構造。 A cap (15) having a fitting hole (15a) is accommodated and held in a cylindrical mounting seat (13) projecting from the back surface of the cover body (11) of the engine cover (3) and projecting from the engine (1). The tip of the rod-shaped fixture (5) thus formed is press-fitted into the fitting hole (15a) of the cap (15), and the engine cover (3) is inserted through the cap (15) and the fixture (5). Engine cover mounting structure to be mounted on the engine (1)
Near the protruding edge of the mounting seat (13), a plurality of engagement holes (13a) are formed at intervals in the circumferential direction,
The cap (15) has a plurality of projecting pieces (17b) engaged with the engaging hole (13a) on the outer surface and a spherical head (17) having the fitting hole (15a) inside, It is made of resin and has a skirt portion (19) that extends conically from the spherical head (17) and opens the fitting hole (15a) to the outside, and at least one slit (21) has the skirt portion ( Formed continuously from the terminal of 19) to the ball head (17),
The fixture (5) comprises a shaft portion (7) and a spherical bulge portion (9) that forms a bulge shape at the tip of the shaft portion (7) and forms the tip portion,
In the process of accommodating and holding the cap (15) in the mounting seat (13), the ball head (17) and the skirt (19) of the cap (15) are compressed to reduce the width of the slit (21). Then, the spherical head (17) and the skirt (19) are deformed in the direction of diameter reduction and inserted into the mounting seat (13), and the compression of the spherical head (17) and the skirt (19) is released. By expanding the width of the slit (21), the spherical head (17) and the skirt (19) are restored to their original shapes, and the protrusion (17b) is engaged with the mounting seat (13). Engage the hole (13a),
When the bulging portion (9) is press-fitted into the fitting hole (15a) from the skirt portion (19) of the cap (15), the skirt portion (19) and the ball head (17) The boundary portion (15b) is pressed radially outward to increase the width of the slit (21) and pass through the boundary portion (15b) to be fitted into the fitting hole (15a), and the engine cover (3 ) Is attached to the engine (1) via the cap (15) and the fixture (5). 請求項１に記載のエンジンカバー取付構造において、
上記キャップ(15)を取付座(13)に収容保持した状態で、上記スカート部(19)が取付座(13)の突出端縁に当接するとともに、上記球頭部(17)と取付座(13)内周面との間に隙間(c1)が形成され、
上記突片(17b)の上下方向の厚み(t)は、上記係合孔(13a)の上下方向の開口寸法(h1)よりも小さく設定されているとともに、上記突片(17b)の水平方向の幅(w)は、上記係合孔(13a)の水平方向の開口寸法(h2)よりも小さく設定されて、突片(17b)と係合孔(13a)内周縁との間にも隙間(c2)が形成されていることを特徴とするエンジンカバー取付構造。 The engine cover mounting structure according to claim 1,
In a state where the cap (15) is accommodated and held in the mounting seat (13), the skirt portion (19) abuts against the protruding edge of the mounting seat (13), and the ball head (17) and the mounting seat ( 13) A gap (c1) is formed between the inner peripheral surface and
The vertical thickness (t) of the protruding piece (17b) is set smaller than the vertical opening dimension (h1) of the engaging hole (13a) and the horizontal direction of the protruding piece (17b). The width (w) of the engagement hole (13a) is set smaller than the horizontal opening dimension (h2), and a gap is also formed between the projecting piece (17b) and the inner periphery of the engagement hole (13a). An engine cover mounting structure in which (c2) is formed. 請求項１又は２に記載のエンジンカバー取付構造において、
上記キャップ(15)を取付座(13)に収容保持した状態で、上記エンジンカバー(3)のカバー本体(11)裏面と上記キャップ(15)の球頭部(17)との間には、衝撃により上記突片(17b)が上記係合孔(13a)から外れた際に、上記キャップ(15)の移動を許容する移動スペース(S)が形成されていることを特徴とするエンジンカバー取付構造。 The engine cover mounting structure according to claim 1 or 2,
In a state where the cap (15) is accommodated and held in the mounting seat (13), between the back surface of the cover body (11) of the engine cover (3) and the ball head (17) of the cap (15), A mounting space (S) for allowing movement of the cap (15) when the projecting piece (17b) is removed from the engagement hole (13a) by impact is formed. Construction.
JP2012166682A 2012-07-27 2012-07-27 Engine cover mounting structure Pending JP2014025423A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107804377A (en) * 2017-10-29 2018-03-16 重庆长安汽车股份有限公司 A kind of fit structure of automobile engine trim cover and engine
US20180094669A1 (en) * 2015-04-15 2018-04-05 Autoneum Management Ag Snap-in mounting for mounting an engine top cover
KR20190054302A (en) * 2017-11-13 2019-05-22 현대자동차주식회사 A insulator for engine cover

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180094669A1 (en) * 2015-04-15 2018-04-05 Autoneum Management Ag Snap-in mounting for mounting an engine top cover
CN107804377A (en) * 2017-10-29 2018-03-16 重庆长安汽车股份有限公司 A kind of fit structure of automobile engine trim cover and engine
KR20190054302A (en) * 2017-11-13 2019-05-22 현대자동차주식회사 A insulator for engine cover
KR102428404B1 (en) * 2017-11-13 2022-08-02 현대자동차주식회사 A insulator for engine cover

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