JP2020067108A - Resin component fixation method - Google Patents
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Abstract
Description
本発明は、熱カシメによる樹脂部品の固定方法に関する。 The present invention relates to a method of fixing a resin component by thermal crimping.
従来、この種の樹脂部品の固定方法として、例えば特許文献1に示す車両用内装品の固定構造が知られている。このような車両用内装品の固定構造は、凸状固定部材が一体形成された板状の第1車両用内装品と、凸状固定部材が挿入可能な貫通孔を有する板状の第2車両用内装品とを備えている。凸状固定部材は、第1車両用内装品から一体的に突出する円筒状のボスと、ボスの基端部の外周面に周方向で等間隔となるように形成された4つのリブとを備えている。 Conventionally, as a fixing method of this kind of resin component, for example, a fixing structure for vehicle interior parts disclosed in Patent Document 1 is known. Such a fixing structure for a vehicle interior component includes a plate-shaped first vehicle interior component integrally formed with a convex fixing member and a plate-shaped second vehicle having a through hole into which the convex fixing member can be inserted. And interior items for. The convex fixing member includes a cylindrical boss integrally protruding from the first vehicle interior component and four ribs formed on the outer peripheral surface of the base end portion of the boss at equal intervals in the circumferential direction. I have it.
そして、第2車両用内装品の貫通孔に第1車両用内装品の凸状固定部材のボスを挿入させた状態で、ボスにおける貫通孔から第2車両用内装品の反対側に突出した先端部を溶融させて貫通孔よりも大きいカシメ頭部を形成する熱カシメを行うことによって、第2車両用内装品を第1車両用内装品に固定している。 Then, in a state where the boss of the convex fixing member of the first vehicle interior product is inserted into the through hole of the second vehicle interior product, the tip protruding from the through hole in the boss to the opposite side of the second vehicle interior product. The second vehicle interior component is fixed to the first vehicle interior component by performing thermal caulking that melts the portion and forms a caulking head portion that is larger than the through hole.
ところで、上述のような車両用内装品の固定構造では、第2車両用内装品の貫通孔に第1車両用内装品の凸状固定部材のボスが単に挿入された状態で熱カシメを行っている。このため、熱カシメ前の第1車両用内装品及び第2車両用内装品の取り回しの仕方によっては、重力などによってボスが貫通孔から抜けてしまうため、ボスが貫通孔から抜けないように作業者が第2車両用内装品を支えながら取り回しを行う必要がある。この結果、第2車両用内装品を第1車両用内装品に熱カシメする前の取り回し作業が作業者の負担となってしまうという問題がある。 By the way, in the fixing structure for the vehicle interior component as described above, thermal caulking is performed in a state where the boss of the convex fixing member of the first vehicle interior component is simply inserted into the through hole of the second vehicle interior component. There is. Therefore, depending on how to handle the interior parts for the first vehicle and the interior parts for the second vehicle before thermal caulking, the boss may come out of the through hole due to gravity or the like. It is necessary for the person to handle the second vehicle interior parts while supporting them. As a result, there is a problem that the handling work before the second vehicle interior component is thermally crimped to the first vehicle interior component becomes a burden on the operator.
本発明は、このような従来技術に存在する問題点に着目してなされた。その目的は、樹脂部品である第1部品を熱カシメ前に容易に第2部品に仮固定することができる樹脂部品の固定方法を提供することにある。 The present invention has been made paying attention to the problems existing in such conventional techniques. An object of the present invention is to provide a fixing method for a resin component, which can easily temporarily fix the first component, which is a resin component, to the second component before the heat caulking.
以下、上記課題を解決するための手段及びその作用効果について記載する。
上記課題を解決する樹脂部品の固定方法は、筒状の突出部を有する熱可塑性樹脂製の第1部品と、前記突出部が挿入可能な貫通孔を有する第2部品とを固定する樹脂部品の固定方法であって、前記突出部の外周面における基端部にはリブが設けられ、前記突出部の外周面における前記リブと前記突出部の先端部との間の位置には前記リブとの間に隙間を形成するように凸部が設けられ、前記突出部を前記貫通孔に挿入して前記リブと前記凸部とで前記第2部品を挟むことによって前記第1部品と前記第2部品とを仮止めする仮止め工程と、前記突出部における前記凸部から先端側を溶融させて前記貫通孔よりも大きいカシメ頭部を形成する熱カシメ工程と、を備えることを要旨とする。
Hereinafter, the means for solving the above-mentioned problems and the effects thereof will be described.
A method of fixing a resin component that solves the above-mentioned problem is a resin component that fixes a first component made of a thermoplastic resin having a cylindrical protruding portion and a second component having a through hole into which the protruding portion can be inserted. A fixing method, wherein a rib is provided at a base end portion of the outer peripheral surface of the protruding portion, and a rib is provided at a position between the rib and the tip portion of the protruding portion on the outer peripheral surface of the protruding portion. Protrusions are provided so as to form a gap therebetween, the protrusion is inserted into the through hole, and the rib and the protrusion sandwich the second component, whereby the first component and the second component. And a thermal crimping step of melting the tip side from the convex portion of the protruding portion to form a crimping head larger than the through hole.
この構成によれば、第1部品を第2部品に仮止めした状態で取り回し作業を行うことができる。すなわち、第1部品を支えることなく取り回し作業を行うことができる。したがって、樹脂部品である第1部品を熱カシメ前に容易に第2部品に仮固定することができる。 With this configuration, it is possible to carry out the manipulating work in a state where the first component is temporarily fixed to the second component. That is, the handling work can be performed without supporting the first component. Therefore, the first component, which is the resin component, can be easily temporarily fixed to the second component before the heat crimping.
本発明によれば、樹脂部品である第1部品を熱カシメ前に容易に第2部品に仮固定することができる。 According to the present invention, the first component, which is a resin component, can be easily temporarily fixed to the second component before the heat caulking.
以下、樹脂部品の固定方法の一実施形態を図面に従って説明する。
図1に示すように、例えば車両の内装品などの樹脂部品である熱可塑性樹脂製の第1部品11は、板状の本体部12と、本体部12の片面に一体形成された複数の円筒状をなす突出部13(図1では1つの突出部13のみを示している)とを有している。突出部13は、本体部12に対して垂直に延びている。突出部13の外周面における基端部には、複数(本例では4つ)の板状のリブ14が突出部13の周方向に等間隔となるように設けられている。各リブ14は、突出部13及び本体部12の両方に対して一体形成されている。
Hereinafter, one embodiment of a method for fixing a resin component will be described with reference to the drawings.
As shown in FIG. 1, a first component 11 made of a thermoplastic resin, which is a resin component such as an interior trim of a vehicle, includes a plate-shaped main body 12 and a plurality of cylinders integrally formed on one surface of the main body 12. And a protruding portion 13 having a shape (only one protruding portion 13 is shown in FIG. 1). The protrusion 13 extends perpendicularly to the main body 12. A plurality of (four in this example) plate-shaped ribs 14 are provided at the base end portion of the outer peripheral surface of the protrusion 13 at equal intervals in the circumferential direction of the protrusion 13. Each rib 14 is integrally formed with both the protrusion 13 and the main body 12.
4つのリブ14は、突出部13を挟んでそれぞれ対向する二対のリブ14によって構成されている。二対のリブ14のうち、一方は第1リブ対15とされ、他方は第2リブ対16とされている。第1リブ対15及び第2リブ対16は、互いに突出部13の周方向に90度の角度分だけ位置がずれるように配置されている。突出部13における第1リブ対15よりも先端側には、突出部13の軸方向(長手方向)に延びる一対のスリット17が径方向で対向するように設けられている。 The four ribs 14 are composed of two pairs of ribs 14 that face each other with the protruding portion 13 interposed therebetween. Of the two pairs of ribs 14, one is a first rib pair 15 and the other is a second rib pair 16. The first rib pair 15 and the second rib pair 16 are arranged so as to be displaced from each other by an angle of 90 degrees in the circumferential direction of the protrusion 13. A pair of slits 17 extending in the axial direction (longitudinal direction) of the protrusion 13 are provided on the tip side of the protrusion 13 with respect to the first rib pair 15 so as to face each other in the radial direction.
一対のスリット17は、突出部13の周方向の位置が第1リブ対15と一致しており、突出部13における第1リブ対15から突出部13の先端まで真っ直ぐに延びている。すなわち、一対のスリット17は、突出部13の中心軸線を挟んで対向している。換言すれば、一対のスリット17は、突出部13を二等分する位置に形成されている。なお、本実施形態における一対のスリット17の幅は、第1リブ対15を構成するリブ14の厚さと同じになっている。 The pair of slits 17 has a position in the circumferential direction of the protruding portion 13 that matches the first rib pair 15, and extends straight from the first rib pair 15 in the protruding portion 13 to the tip of the protruding portion 13. That is, the pair of slits 17 are opposed to each other with the central axis of the protrusion 13 interposed therebetween. In other words, the pair of slits 17 are formed at positions that divide the protrusion 13 into two equal parts. The width of the pair of slits 17 in this embodiment is the same as the thickness of the ribs 14 forming the first rib pair 15.
突出部13の外周面における第2リブ対16と突出部13の先端部との間の位置には、第2リブ対16との間にそれぞれ隙間を形成するように一対の凸部18が設けられている。すなわち、凸部18は、突出部13の外周面における一対のスリット17を挟んだ両側に対をなすように設けられている。 A pair of protrusions 18 is provided on the outer peripheral surface of the protrusion 13 at a position between the second rib pair 16 and the tip of the protrusion 13 so as to form a gap between the second rib pair 16 and the second rib pair 16. Has been. That is, the convex portions 18 are provided so as to form a pair on both sides of the outer peripheral surface of the protruding portion 13 with the pair of slits 17 interposed therebetween.
換言すれば、一対の凸部18は、突出部13の周方向の位置が第2リブ対16と一致しており、且つ一対のスリット17に対して突出部13の周方向に90度の角度分だけ位置がずれるように配置されている。各凸部18における突出部13の先端側の面は、突出部13の先端側に向かうほど突出部13の外周面からの突出高さが徐々に低くなるように傾斜した摺動面19とされている。 In other words, in the pair of convex portions 18, the circumferential position of the projecting portion 13 matches the second rib pair 16, and the angle of 90 degrees in the circumferential direction of the projecting portion 13 with respect to the pair of slits 17. It is arranged so that the position is shifted by an amount. The surface of each protrusion 18 on the tip side of the protrusion 13 is a sliding surface 19 that is inclined such that the protrusion height from the outer peripheral surface of the protrusion 13 gradually decreases toward the tip of the protrusion 13. ing.
図2及び図4に示すように、第2部品20は、板状をなしており、例えば合成樹脂や金属などによって構成される。第2部品20は、突出部13が挿入可能な複数の円形の貫通孔21を有している。各貫通孔21は、第1部品11の各突出部13と対応するように配置されている。各貫通孔21における突出部13が挿入される側の周縁部22は、R面取り加工が施されている。 As shown in FIGS. 2 and 4, the second component 20 has a plate shape and is made of, for example, synthetic resin or metal. The second component 20 has a plurality of circular through holes 21 into which the protrusions 13 can be inserted. Each through hole 21 is arranged so as to correspond to each protrusion 13 of the first component 11. The peripheral edge portion 22 of each through hole 21 on the side where the protruding portion 13 is inserted is R-chamfered.
貫通孔21の径は、突出部13の外径よりも大きく、且つ突出部13の外径と一対の凸部18の突出部13の外周面からの突出高さとの和よりも僅かに小さくなるように設定されている。第2部品20の厚さは、第1部品11における第2リブ対16と一対の凸部18との間の隙間よりも僅かに薄くなるように設定されている。 The diameter of the through hole 21 is larger than the outer diameter of the protruding portion 13, and is slightly smaller than the sum of the outer diameter of the protruding portion 13 and the protruding height of the pair of protrusions 18 from the outer peripheral surface of the protruding portion 13. Is set. The thickness of the second component 20 is set to be slightly thinner than the gap between the second rib pair 16 and the pair of convex portions 18 in the first component 11.
次に、上述のように構成された第1部品11を第2部品20に固定する方法について説明する。
第1部品11と第2部品20とを固定する場合には、まず、第1部品11の各突出部13を第2部品20の各貫通孔21に挿入する。すると、各突出部13に設けられた一対の凸部18の摺動面19が各貫通孔21の周縁部22に当接する。引き続き、各突出部13を各貫通孔21に押し込むと、各突出部13に設けられた一対の凸部18の摺動面19が貫通孔21の内周面を摺動することにより、各突出部13が貫通孔21の内周面から一対の凸部18を介して押圧力を受ける。
Next, a method of fixing the first component 11 configured as described above to the second component 20 will be described.
When fixing the first component 11 and the second component 20, first, the protrusions 13 of the first component 11 are inserted into the through holes 21 of the second component 20. Then, the sliding surfaces 19 of the pair of protrusions 18 provided on each protrusion 13 abut on the peripheral edge 22 of each through hole 21. Subsequently, when each protrusion 13 is pushed into each through hole 21, the sliding surfaces 19 of the pair of protrusions 18 provided on each protrusion 13 slide on the inner peripheral surface of the through hole 21 to cause each protrusion. The portion 13 receives a pressing force from the inner peripheral surface of the through hole 21 via the pair of convex portions 18.
すると、この押圧力により、各突出部13は一対のスリット17の幅が小さくなるように弾性変形する。このため、各突出部13における一対の凸部18が設けられた部分が各貫通孔21を円滑に通り抜ける。すると、図3及び図4に示すように、各突出部13は自身の弾性復元力によって弾性変形前の元の形状に戻ることで、各突出部13に設けられた一対の凸部18が各貫通孔21に係止されるとともに、各突出部13に設けられた第2リブ対16と一対の凸部18とで第2部品20が挟まれる。 Then, due to this pressing force, each protrusion 13 is elastically deformed so that the width of the pair of slits 17 becomes smaller. Therefore, the portion of each protrusion 13 provided with the pair of protrusions 18 smoothly passes through each through hole 21. Then, as shown in FIGS. 3 and 4, each protrusion 13 returns to its original shape before elastic deformation due to its elastic restoring force, so that each of the pair of protrusions 18 provided on each protrusion 13 is The second part 20 is sandwiched by the second rib pair 16 and the pair of convex portions 18 provided on each of the protrusions 13 while being locked in the through hole 21.
これにより、第1部品11の各突出部13が第2部品20の各貫通孔21から簡単に抜けることがなくなり、第1部品11と第2部品20とが仮止めされた状態になる(仮止め工程)。引き続き、図示しない熱カシメ装置によって各突出部13における一対の凸部18から先端側の全て(各突出部13における各貫通孔21を通り抜けた部分の全て)を溶融させると、図5に示すように、各突出部13の先端部に各貫通孔21よりも径の大きい円板状のカシメ頭部23が形成される(熱カシメ工程)。 As a result, the protrusions 13 of the first component 11 do not easily come out of the through holes 21 of the second component 20, and the first component 11 and the second component 20 are temporarily fixed (temporary). Stop process). Subsequently, when all of the tip side from the pair of protrusions 18 in each protrusion 13 (all the portions passing through each through hole 21 in each protrusion 13) is melted by a thermal caulking device (not shown), as shown in FIG. In addition, a disk-shaped crimp head 23 having a diameter larger than that of each through hole 21 is formed at the tip of each protruding portion 13 (thermal crimping step).
これにより、各突出部13に設けられた4つのリブ14(第1リブ対15及び第2リブ対16)とカシメ頭部23とによって第2部品20がしっかりと挟まれた状態となり、第1部品11と第2部品20とが固定される。 As a result, the second component 20 is firmly sandwiched by the four ribs 14 (first rib pair 15 and second rib pair 16) provided on each protrusion 13 and the crimp head 23, and The component 11 and the second component 20 are fixed.
このように、第1部品11の各突出部13は、一対の凸部18が設けられているため、第1部品11と第2部品20との仮止め機能を発揮する。このため、樹脂部品である第1部品11を熱カシメ前に容易に第2部品20に仮固定することができる。 As described above, since each protrusion 13 of the first component 11 is provided with the pair of protrusions 18, it exhibits a temporary fixing function between the first component 11 and the second component 20. Therefore, the first component 11 which is a resin component can be easily temporarily fixed to the second component 20 before the heat crimping.
以上詳述した実施形態によれば、次のような効果が発揮される。
(1)樹脂部品の固定方法は、突出部13を貫通孔21に挿入して第2リブ対16と一対の凸部18とで第2部品20を挟むことによって第1部品11と第2部品20とを仮止めする仮止め工程と、突出部13における一対の凸部18から先端側を溶融させて貫通孔21よりも大きいカシメ頭部23を形成する熱カシメ工程と、を備える。この構成によれば、第1部品11を第2部品20に仮止めした状態で取り回し作業を行うことができる。すなわち、第1部品11及び第2部品20の姿勢に拘わらず、第1部品11を支えることなく取り回し作業を行うことができる。したがって、樹脂部品である第1部品11を熱カシメ前に容易に第2部品20に仮固定することができる。
According to the embodiment described in detail above, the following effects are exhibited.
(1) The method of fixing the resin component is to insert the protrusion 13 into the through hole 21 and sandwich the second component 20 between the second rib pair 16 and the pair of protrusions 18 to form the first component 11 and the second component. And a thermal crimping step of melting the tip end side from the pair of convex portions 18 in the projecting portion 13 to form the crimping head portion 23 larger than the through hole 21. According to this configuration, it is possible to carry out the manipulating work in a state where the first component 11 is temporarily fixed to the second component 20. That is, regardless of the postures of the first component 11 and the second component 20, the manipulating work can be performed without supporting the first component 11. Therefore, the first component 11 which is a resin component can be easily temporarily fixed to the second component 20 before the heat crimping.
(2)樹脂部品の固定方法において、突出部13におけるリブ14よりも先端側には、長手方向に延びる一対のスリット17が径方向で対向するように設けられている。この構成によれば、突出部13の径が小さくなるように(スリット17の幅が小さくなるように)突出部13を弾性変形させることで、突出部13を貫通孔21に容易に挿入することができる。 (2) In the method of fixing the resin component, a pair of slits 17 extending in the longitudinal direction are provided on the tip side of the ribs 13 in the protruding portion 13 so as to face each other in the radial direction. According to this configuration, the protrusion 13 is elastically deformed so that the diameter of the protrusion 13 becomes smaller (so that the width of the slit 17 becomes smaller), so that the protrusion 13 can be easily inserted into the through hole 21. You can
(3)樹脂部品の固定方法において、凸部18は、突出部13の外周面における一対のスリット17を挟んだ両側に対をなすように設けられている。この構成によれば、突出部13の径が小さくなるように(スリット17の幅が小さくなるように)突出部13を弾性変形させることで、突出部13における一対の凸部18が設けられた部分を貫通孔21に容易に挿入することができる。 (3) In the method of fixing the resin component, the convex portions 18 are provided so as to form a pair on both sides of the outer peripheral surface of the protruding portion 13 with the pair of slits 17 interposed therebetween. According to this configuration, the pair of protrusions 18 in the protrusion 13 is provided by elastically deforming the protrusion 13 so that the diameter of the protrusion 13 becomes smaller (so that the width of the slit 17 becomes smaller). The part can be easily inserted into the through hole 21.
(4)樹脂部品の固定方法において、リブ14は、突出部13の周方向に間隔を置いて複数(本例では4つ)設けられている。この構成によれば、突出部13の強度を高めることができる。 (4) In the method of fixing resin parts, a plurality of ribs 14 (four in this example) are provided at intervals in the circumferential direction of the protrusion 13. According to this structure, the strength of the protrusion 13 can be increased.
(変更例)
なお、上記実施形態は次のように変更してもよい。
・第1部品11におけるリブ14の数は、1つ以上であれば任意に変更してもよい。
(Example of change)
The above embodiment may be modified as follows.
-The number of ribs 14 in the first component 11 may be arbitrarily changed as long as it is one or more.
・複数(4つ)のリブ14は、突出部13の外周面に対して必ずしも周方向に等間隔となるように設ける必要はない。
・第1部品11における一対の凸部18のうちのいずれか一方を省略してもよい。
The plurality (four) of ribs 14 need not be provided at equal intervals in the circumferential direction with respect to the outer peripheral surface of the protruding portion 13.
-Any one of the pair of convex portions 18 of the first component 11 may be omitted.
・第1部品11における一対のスリット17は、省略してもよい。
・スリット17の長さは、適宜変更してもよい。
・突出部13の形状は、多角筒状であってもよいし、楕円筒状であってもよい。この場合、突出部13の形状に合わせて貫通孔21の形状も変更することが好ましい。
The pair of slits 17 in the first component 11 may be omitted.
-The length of the slit 17 may be changed appropriately.
The shape of the protrusion 13 may be a polygonal cylinder or an elliptic cylinder. In this case, it is preferable to change the shape of the through hole 21 in accordance with the shape of the protruding portion 13.
11…第1部品、13…突出部、14…リブ、17…スリット、18…凸部、20…第2部品、21…貫通孔、23…カシメ頭部。 Reference numeral 11 ... First component, 13 ... Projection portion, 14 ... Rib, 17 ... Slit, 18 ... Convex portion, 20 ... Second component, 21 ... Through hole, 23 ... Caulking head.
Claims (4)
前記突出部の外周面における基端部にはリブが設けられ、
前記突出部の外周面における前記リブと前記突出部の先端部との間の位置には前記リブとの間に隙間を形成するように凸部が設けられ、
前記突出部を前記貫通孔に挿入して前記リブと前記凸部とで前記第2部品を挟むことによって前記第1部品と前記第2部品とを仮止めする仮止め工程と、
前記突出部における前記凸部から先端側を溶融させて前記貫通孔よりも大きいカシメ頭部を形成する熱カシメ工程と、
を備えることを特徴とする樹脂部品の固定方法。 A method of fixing a resin component, comprising: fixing a first component made of a thermoplastic resin having a cylindrical protrusion and a second component having a through hole into which the protrusion is insertable,
A rib is provided on the base end portion of the outer peripheral surface of the protrusion,
A protrusion is provided at a position between the rib and the tip of the protrusion on the outer peripheral surface of the protrusion so as to form a gap between the rib and the protrusion,
A temporary fixing step of temporarily fixing the first component and the second component by inserting the protrusion into the through hole and sandwiching the second component between the rib and the protrusion;
A thermal caulking step of melting the tip side from the convex portion of the protruding portion to form a caulking head larger than the through hole,
A method for fixing a resin component, comprising:
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2022001774A (en) * | 2020-06-19 | 2022-01-06 | 古河電気工業株式会社 | Fixing structure of attached member, attaching member and fixing method of attaching member |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2022001774A (en) * | 2020-06-19 | 2022-01-06 | 古河電気工業株式会社 | Fixing structure of attached member, attaching member and fixing method of attaching member |
JP7458249B2 (en) | 2020-06-19 | 2024-03-29 | 古河電気工業株式会社 | Fixing structure of mounted parts, mounted parts, and method of fixing mounted parts |
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