JP5464728B2 - Resin products with press-fit members - Google Patents

Resin products with press-fit members Download PDF

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Publication number
JP5464728B2
JP5464728B2 JP2008317305A JP2008317305A JP5464728B2 JP 5464728 B2 JP5464728 B2 JP 5464728B2 JP 2008317305 A JP2008317305 A JP 2008317305A JP 2008317305 A JP2008317305 A JP 2008317305A JP 5464728 B2 JP5464728 B2 JP 5464728B2
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Japan
Prior art keywords
press
hole
fitted
resin product
fitting member
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JP2010139018A (en
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伸晃 吉岡
郁夫 森田
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Yazaki Corp
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Yazaki Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • B29C66/12822—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments comprising at least three overlap joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1286—Stepped joint cross-sections comprising at least one bevelled joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/737—Articles provided with holes, e.g. grids, sieves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

本発明は、貫通穴を有する樹脂製品にその樹脂製品より硬い圧入部材が圧入されて固定される樹脂製品に関するもので、特にそのとき発生するバリのバリ取り不要の樹脂製品と圧入部材、およびこれらを用いた圧入部材付き樹脂製品に関するものである。   The present invention relates to a resin product in which a press-fitting member harder than the resin product is press-fitted and fixed to a resin product having a through hole, and in particular, a resin product and a press-fitting member that do not require deburring of the burrs generated at that time, and these The present invention relates to a resin product with a press-fitting member that uses the above.

図４は貫通穴を有する樹脂製品にその樹脂製品より硬い圧入部材が圧入される従来製品を説明する図で、（ａ）は圧入部材の斜視図、（ｂ）は樹脂製品の貫通穴の部分の斜視図である。
〈従来の圧入部材〉
図４（ａ）において、４０は従来の圧入部材の１例としてのカラーである。このカラー４０は、圧入先端４０Ｆから圧入後端４０Ｂまで、外径４０Ｄが同じの円筒状をしている。圧入部材としては、カラーの他に、四角柱や六角柱をしたナットのような金属製品を挙げることができる。以下では、カラーの例で説明をしていく。
〈従来の樹脂製品〉
図４（ｂ）において、３０は従来の樹脂製品にあけられた貫通穴である。この貫通穴３０は入口から出口まで内径が同一の中空円筒状（カラーの挿入の場合）や、横断面内形が同じの四角柱や六角柱（ナットの挿入の場合）をしている。
以後、考え方は同じなので中空円筒状のカラーの例で説明するが、ナットの場合にも同じように適用することができる。
樹脂製品の貫通穴３０の内壁には全周に亘って軸方向に平行な山３０Ｍが複数個形成してあり、圧入されたカラー４０が圧入されて前進するとき、山３０Ｍを押し潰して反力を得て貫通穴３０にカラー４０がしっかり固定されるようになる。 4A and 4B are diagrams for explaining a conventional product in which a press-fitting member harder than the resin product is press-fitted into a resin product having a through-hole, wherein FIG. 4A is a perspective view of the press-fitting member, and FIG. 4B is a portion of the through-hole of the resin product. FIG.
<Conventional press-fit member>
In FIG. 4A, reference numeral 40 denotes a collar as an example of a conventional press-fitting member. The collar 40 has a cylindrical shape with the same outer diameter 40D from the press-fit tip 40F to the press-fit rear end 40B. Examples of the press-fitting member include metal products such as nuts having quadrangular columns and hexagonal columns in addition to the collar. In the following, an example of color will be described.
<Conventional resin products>
In FIG.4 (b), 30 is a through-hole drilled in the conventional resin product. The through hole 30 has a hollow cylindrical shape having the same inner diameter from the inlet to the outlet (when a collar is inserted), or a rectangular column or a hexagonal column (when a nut is inserted) having the same shape in the cross section.
Hereinafter, since the concept is the same, an example of a hollow cylindrical collar will be described, but the same can be applied to a nut.
A plurality of ridges 30M parallel to the axial direction are formed on the inner wall of the through hole 30 of the resin product, and when the press-fitted collar 40 moves forward by being press-fitted, the ridge 30M is crushed and deformed. The collar 40 is firmly fixed to the through hole 30 by obtaining force.

図５は図４（ａ）のカラーを図４（ｂ）の樹脂製品に圧入する前後を同時に示す従来の樹脂製品３の斜視図である。
図５において、４０１は図の左の圧入される前のカラーで、４０２は図の右の圧入された後のカラーである。カラー４０２が圧入されている樹脂製品の下部からバリＢが飛散している。 FIG. 5 is a perspective view of a conventional resin product 3 simultaneously showing before and after press-fitting the collar of FIG. 4 (a) into the resin product of FIG. 4 (b).
In FIG. 5, 401 is a color before being press-fitted on the left side of the figure, and 402 is a color after being press-fitted on the right side of the figure. The burrs B are scattered from the lower part of the resin product into which the collar 402 is press-fitted.

〈バリの発生する理由〉
ここで、バリの発生する理由を図６を用いて説明する。
図６はバリの発生する理由を説明する縦断面図で、（ａ）は圧入前、（ｂ）は圧入途中、（ｃ）は圧入完了の図である。
（ａ）圧入前：
樹脂製品を造る場合、図６（ａ）で示すように、貫通穴３０内の複数の山３０Ｍで作る内径３０Ｄの方が円筒状カラー４０の外径４０Ｄよりも小さくできている。
（ｂ）圧入途中：
したがって、カラー４０が貫通穴３０に圧入されると、図６（ｂ）で示すように、カラー４０の圧入方向先端４０Ｆが貫通穴３０の山３０Ｍを押し潰し、その際削り落としながら下へ圧入が進行していく。削り落ちた山の一部はバリＢとなって貫通穴３０の内部から下方へ落下する。
（ｃ）圧入完了：
カラー４０の圧入が完了すると、図６（ｃ）で示すように、カラー４０の先端４０Ｆは貫通穴３０最下端に達している。そしてこれまで削り落とされた山３０ＭはバリＢとなって貫通穴３０の内部から下方に落下している。 <Reason for burrs>
Here, the reason for the occurrence of burrs will be described with reference to FIG.
6A and 6B are longitudinal sectional views for explaining the reason for occurrence of burrs. FIG. 6A is a view before press-fitting, FIG. 6B is a state during press-fitting, and FIG.
(A) Before press-fitting:
When manufacturing a resin product, as shown in FIG. 6A, the inner diameter 30 </ b> D formed by the plurality of peaks 30 </ b> M in the through hole 30 is made smaller than the outer diameter 40 </ b> D of the cylindrical collar 40.
(B) During press fitting:
Accordingly, when the collar 40 is press-fitted into the through-hole 30, as shown in FIG. 6B, the press-fitting direction tip 40F of the collar 40 crushes the crest 30M of the through-hole 30, and press-fits downward while scraping off. Will progress. A part of the shaved mountain becomes a burr B and falls downward from the inside of the through hole 30.
(C) Press-in completion:
When the press-fitting of the collar 40 is completed, the tip 40F of the collar 40 reaches the lowermost end of the through hole 30 as shown in FIG. The crest 30 </ b> M that has been scraped off becomes burr B and falls downward from the inside of the through hole 30.

〈バリの引き起こす問題〉
このように、バリが発生したのは、圧入されたカラー４０が山３０Ｍを押し潰すとき削り取られた山３０Ｍの一部がバリＢとなって落下したからである。
落下したバリＢは樹脂製品に付着して、組み付け時や製品使用時にバリＢが移動して、接続不良や不純物混入の原因になったり、製品の重要な部分に付着してさまざまなトラブルを起こすことになった。
そこで、従来はこのバリＢを除去するため、わざわざバリ除去工程を設け、バキューム吸引等によりバリＢを吸引して除去していた。 <Problems caused by Bali>
Thus, the burr | flash generate | occur | produced because a part of the crest 30M cut off when the press-fit collar 40 crushes the crest 30M fell as a burr B.
The fallen burr B adheres to the resin product, and the burr B moves during assembly or product use, causing connection failure or contamination with impurities, or sticking to important parts of the product and causing various troubles. is what happened.
Therefore, conventionally, in order to remove this burr B, a burr removing step is purposely provided and the burr B is sucked and removed by vacuum suction or the like.

〈先行関連技術〉
一方、バリ対策として、バリが発生してもナットを所定の突当底壁に確実に埋め込むことのできるナット収納部付き樹脂成形品が開示されている（特許文献１参照）。
それによると、ナットが嵌（はめ）込まれる樹脂成形品の凹所を次のように形成している。すなわち、その凹所が、ナットの外周の平行面を規制してナットを回り止めする一対の左右側壁と、ナットの前後端面を規制する一対の前後壁と、ナットの外周の一部を突き当てることでナットの嵌込み深さ位置を規制する突当底壁と、突当底壁と対向するナット挿入用開口とを備え、嵌込んだナットに対しボルトを挿入する切欠が前壁に形成され、ナットを嵌込む際にナットの外周の平行面によって押し潰されるリブが左右側壁に設けられている。そのリブの削りカスを溜める空所を突当底壁に設けている。
これにより、リブの削りカスは空所に溜まるので、ナットを所定の突当底壁に確実に埋め込むことができるようになる、と言うものである。
特開平９−２９６８１５号公報 <Prior art>
On the other hand, as a countermeasure against burrs, there is disclosed a resin molded product with a nut housing portion that can reliably embed a nut in a predetermined abutting bottom wall even if burrs occur (see Patent Document 1).
According to this, the recess of the resin molded product into which the nut is fitted (fitted) is formed as follows. That is, the recess abuts a pair of left and right side walls that restrict the parallel surface of the outer periphery of the nut to prevent the nut from rotating, a pair of front and rear walls that restrict the front and rear end surfaces of the nut, and a part of the outer periphery of the nut This is provided with a bottom wall that regulates the depth of the nut and a nut insertion opening facing the bottom wall, and a notch for inserting a bolt into the fitted nut is formed in the front wall. Ribs that are crushed by parallel surfaces of the outer periphery of the nut when the nut is fitted are provided on the left and right side walls. A space is provided in the abutting bottom wall to store the shavings of the ribs.
As a result, the scrap scraps of the ribs accumulate in the voids, so that the nut can be reliably embedded in the predetermined abutting bottom wall.
Japanese Patent Laid-Open No. 9-296815

しかしながら、特許文献１記載の発明は「有底の凹所」にナットを嵌合させる場合には効果があるものの、本発明が対象としている「底を有しない貫通穴」の場合には、バリは従来製品と同じく製品の下方へ飛散してしまい、効果がない。   However, although the invention described in Patent Document 1 is effective when a nut is fitted in a “bottomed recess”, in the case of the “through-hole having no bottom”, which is the subject of the present invention, the Scatters down to the bottom of the product like the conventional product, and has no effect.

本発明は、上記した課題を解決するもので、圧入部材によって削り取られた樹脂の一部がバリとなって発生しても、そのバリが樹脂製品から外部に飛散しないようにした樹脂製品を提供することにより、バリ除去工程を不要にして、製品のコスト削減に寄与することを目的としている。   The present invention solves the above-described problems, and provides a resin product in which even if a part of the resin scraped off by the press-fitting member is generated as a burr, the burr is not scattered from the resin product to the outside. The purpose of this is to eliminate the burr removal step and contribute to the cost reduction of the product.

上記目的を達成するために、第１の発明はバリ取り不要の圧入部材付き樹脂製品に係り、貫通穴を有する樹脂製品と、前記樹脂製品より硬い材質で造られた圧入部材とを備え、前記圧入部材が前記貫通穴に圧入されて成る圧入部材付き樹脂製品において、前記貫通穴は、山が形成された被圧入領域を前記圧入部材の挿入側に、かつ、山が形成されていない非圧入領域を該被圧入領域に続けて出口部に向けて備え、前記被圧入領域の開口穴よりも前記非圧入領域の開口穴が小さく、かつ、前記被圧入領域と前記非圧入領域の境界は直角な壁で繋がっており、前記被圧入領域の内壁には軸方向に平行に延びる複数の山が形成され、前記圧入部材は、先端側に小径の案内部分と後端側に大径の圧入部分を前記案内部分に続けて備え、前記案内部分は前記山を押し潰すことなく前記非圧入領域の開口穴まで挿入され、前記圧入部分は前記貫通穴に圧入されて前進するとき前記被圧入領域の前記山を押し潰して反力を得ることで前記貫通穴に確実に固定され、前記圧入部分が前記山を押し潰す際に生じて落下したバリは、前記山と山の間の隙間と前記直角な壁と前記案内部分の後端とで形成される空間に堆積することを特徴としている。
第２の発明は前記第１の発明の圧入部材付き樹脂製品において、前記樹脂製品の前記非圧入領域の貫通穴内側の横断面形状と前記圧入部材の前記案内部分の外側の横断面形状とが略同一であることを特徴としている。 In order to achieve the above object, a first invention relates to a resin product with a press-fitting member that does not require deburring, and includes a resin product having a through hole and a press-fitting member made of a material harder than the resin product, In the resin product with a press-fitting member formed by press-fitting a press-fitting member into the through-hole , the through-hole has a press-fitted region in which a crest is formed on the insertion side of the press-fitting member and is not press-fitted without a crest. An area is provided toward the outlet portion following the press-fit area, the opening hole of the non-press-fit area is smaller than the open hole of the press-fit area, and the boundary between the press-fit area and the non-press-fit area is a right angle The inner wall of the press-fitted region is formed with a plurality of peaks extending in parallel in the axial direction, and the press-fitting member has a small-diameter guide portion on the front end side and a large-diameter press-fit portion on the rear end side. Following the guide portion, the guide portion It is inserted up to the opening hole of the non-press-fit area without crushing the recording mountain, and the press-fitting part is pressed into the through-hole to advance and crush the crest of the pressed-in area to obtain a reaction force. The burr that is securely fixed to the through hole and that is dropped when the press-fitted portion crushes the mountain is formed by the gap between the mountain and the mountain, the right-angle wall, and the rear end of the guide portion. It is characterized by being deposited in a space .
According to a second invention, in the resin product with a press-fitting member according to the first invention, a cross-sectional shape inside the through hole of the non-press-fitted region of the resin product and a cross-sectional shape outside the guide portion of the press-fitting member are It is characterized by being substantially identical.

このような構成により、樹脂製品からバリを飛散しないようにでき、したがってバリ除去工程が不要となり、製品のコスト削減に寄与することとなる。   With such a configuration, it is possible to prevent burrs from being scattered from the resin product, and therefore, a burr removing step is not necessary, which contributes to cost reduction of the product.

以下、本発明に係る樹脂製品について図面に基づいて説明する。
〈本発明に係るカラー付き樹脂製品〉
図１は本発明に係るカラーと、このカラーが圧入される本発明に係る樹脂製品とを説明する斜視図で、（ａ）は本発明に係るカラーで、（イ）は表側、（ロ）は裏側のそれぞれの斜視図である。（ｂ）は樹脂製品の本発明に係る貫通穴の表側斜視図である。
〈本発明に係るカラー〉
図１（ａ）から判るように、カラー２０は樹脂製品１の貫通穴１０（図１（ｂ））に形成された山１０Ｍを押し潰すだけの樹脂製品１よりも固い材料、例えば金属でできている。カラー２０は形成された山１０Ｍを押し潰すだけの太い外径２０Ｐｄ（図３）を有する圧入部分２０Ｐと、この圧入部分２０Ｐの先端から圧入方向先端に向かう案内部分２０Ｇとを備えている。案内部分２０Ｇの方は、山を押し潰すだけの大きさを有しない外径２０Ｇｄ（図３）となっている。
圧入部分２０Ｐにも圧入抵抗を小さくするため軸方向に平行な溝が複数本切られていて、結果的に前記径の山２０Ｍが複数本形成されている。
圧入方向の後端部はさらに大きな直径として、鍔（つば）２０Ｔを形成している。 Hereinafter, the resin product according to the present invention will be described with reference to the drawings.
<Resin product with color according to the present invention>
FIG. 1 is a perspective view for explaining a collar according to the present invention and a resin product according to the present invention into which the collar is press-fitted. FIG. 1A is a collar according to the present invention, FIG. 1A is a front side, and FIG. FIG. 4 is a perspective view of each of the back side. (B) is a front side perspective view of a through hole according to the present invention of a resin product.
<Color according to the present invention>
As can be seen from FIG. 1A, the collar 20 is made of a material harder than the resin product 1, for example, a metal, by simply crushing the crest 10M formed in the through hole 10 of the resin product 1 (FIG. 1B). ing. The collar 20 includes a press-fit portion 20P having a large outer diameter 20Pd (FIG. 3) that only crushes the formed mountain 10M, and a guide portion 20G from the tip of the press-fit portion 20P toward the tip in the press-fit direction. The guide portion 20G has an outer diameter 20Gd (FIG. 3) that does not have a size enough to crush the mountain.
A plurality of grooves parallel to the axial direction are also cut in the press-fitted portion 20P in order to reduce the press-fitting resistance, and as a result, a plurality of crests 20M having the diameter are formed.
The rear end of the press-fitting direction has a larger diameter and forms a collar 20T.

〈本発明に係る樹脂製品〉
一方、樹脂製品１の貫通穴１０には、内壁に軸方向に平行に延びる複数の山１０Ｍが形成されている被圧入領域１０Ａと被圧入領域１０Ａから出口部（図で下方）に向けて山が形成されていない非圧入領域１０Ｎとを備えている。
そして、被圧入領域１０Ａの開口穴よりも非圧入領域１０Ｎの開口穴が小さくなっている。
さらに、被圧入領域１０Ａと非圧入領域１０Ｎとの境界は直角な壁１０Ｗで繋がっている <Resin product according to the present invention>
On the other hand, in the through hole 10 of the resin product 1, a plurality of peaks 10M extending in the axial direction on the inner wall are formed, and a peak from the pressed region 10A toward the outlet (downward in the figure). And a non-press-fit region 10N in which is not formed.
And the opening hole of the non-press-fit area | region 10N is smaller than the opening hole of 10 A of to-be-pressed areas.
Further, the boundary between the press-fitted region 10A and the non-press-fitted region 10N is connected by a right-angle wall 10W.

図２は図１（ａ）のカラーを図１（ｂ）の樹脂製品に圧入する前後を同時に示す本発明の樹脂製品１の斜視図である。
図２において、２０１は図の左の圧入される前のカラーで、２０２は図の右の圧入された後のカラーである。これによると、カラー２０２が圧入されている樹脂製品の下部からは従来製品で発生したバリＢ（図５）が飛散していない。 FIG. 2 is a perspective view of the resin product 1 of the present invention, showing before and after press-fitting the collar of FIG. 1 (a) into the resin product of FIG. 1 (b).
In FIG. 2, 201 is a color before press-fitting on the left side of the figure, and 202 is a color after press-fitting on the right side of the figure. According to this, the burrs B (FIG. 5) generated in the conventional product are not scattered from the lower part of the resin product into which the collar 202 is press-fitted.

〈バリの飛散しない理由〉
ここで、本発明によりバリが飛散しなくなる理由を図３を用いて説明する。
図３はバリの飛散しない理由を説明する縦断面図で、（ａ）は圧入前、（ｂ）は圧入途中、（ｃ）は圧入完了の図である。
（ａ）圧入前：
樹脂製品を造る場合、図３（ａ）で示すように、貫通穴１０の複数の山１０Ｍで作る被圧入領域１０Ａの内径１０Ａｄは、カラー２０の圧入部分２０Ｐの外径２０Ｐｄよりも小さく、また案内部分２０Ｇの外径２０Ｇｄよりも大きくできている。さらに、貫通穴１０の非圧入領域１０Ｎの内径１０Ｎｄは、カラー２０の案内部分２０Ｇの外径２０Ｇｄと略同一にできている。
（ｂ）圧入途中：
したがって、カラー２０が貫通穴１０に圧入されると、図３（ｂ）で示すように、カラー２０の案内部分２０Ｇは貫通穴の山１０Ｍを潰すことなく進むが、圧入部分２０Ｐの先端が貫通穴の山１０Ｍに当接すると山１０Ｍを押し潰し、削り落としながら下へ進んでいく。削り落ちた山１０Ｍの一部はバリＢとなって直角な壁１０Ｗの上に落下する。しかしながら、非圧入領域１０Ｎの内径１０Ｎｄは案内部分２０Ｇの外径２０Ｇｄと略同一にできているので樹脂製品１と案内部分２０Ｇとの間にバリＢが漏れ落ちるほどの隙間はなく、したがって直角な壁１０Ｗの上に落下したバリがさらに案内部分２０Ｇの横を通って樹脂製品１の下に排出されるようなことはない。
（ｃ）圧入完了：
カラー２０の圧入が完了すると、図３（ｃ）で示すように、カラー２０の先端の案内部分２０Ｇは貫通穴１０の最下端に達している。そしてこれまで削り落とされたバリＢは、すべて直角な壁１０Ｗの上に落下し、直角な壁１０Ｗとカラーの案内部分２０Ｇの後端と圧入部分２０Ｄの先端とで形成される空間に押し潰されて堆積される。バリＢがさらに案内部分２０Ｇの横を通って樹脂製品１の下に排出されるようなことはない。 <Reason why Bali does not scatter>
Here, the reason why burrs are not scattered by the present invention will be described with reference to FIG.
3A and 3B are longitudinal sectional views for explaining the reason why burrs are not scattered. FIG. 3A is a view before press-fitting, FIG. 3B is a press-fitting process, and FIG.
(A) Before press-fitting:
When making a resin product, as shown in FIG. 3A, the inner diameter 10Ad of the press-fitted region 10A formed by the plurality of peaks 10M of the through hole 10 is smaller than the outer diameter 20Pd of the press-fitted portion 20P of the collar 20, The guide portion 20G is larger than the outer diameter 20Gd. Further, the inner diameter 10Nd of the non-press-fitted region 10N of the through hole 10 is substantially the same as the outer diameter 20Gd of the guide portion 20G of the collar 20.
(B) During press fitting:
Therefore, when the collar 20 is press-fitted into the through hole 10, as shown in FIG. 3B, the guide portion 20G of the collar 20 advances without crushing the crest 10M of the through hole, but the tip of the press-fit portion 20P penetrates. When it comes into contact with the hole crest 10M, it crushes the crest 10M and proceeds downward while scraping it off. A part of the shaved mountain 10M becomes a burr B and falls onto a right-angle wall 10W. However, since the inner diameter 10Nd of the non-press-fitted region 10N is substantially the same as the outer diameter 20Gd of the guide portion 20G, there is no gap between the resin product 1 and the guide portion 20G so that the burr B leaks out, and is therefore perpendicular. The burr that has fallen on the wall 10 </ b> W does not pass through the side of the guide portion 20 </ b> G and is discharged below the resin product 1.
(C) Press-in completion:
When the press-fitting of the collar 20 is completed, the guide portion 20G at the tip of the collar 20 reaches the lowermost end of the through hole 10 as shown in FIG. All the burrs B scraped off so far fall on the right-angle wall 10W, and are crushed into a space formed by the right-angle wall 10W, the rear end of the collar guide portion 20G, and the front end of the press-fit portion 20D. To be deposited. The burrs B are not discharged below the resin product 1 through the guide portions 20G.

このように、本発明によれば、圧入されたカラー２０が山１０Ｍを押し潰してバリが発生しても、落下したバリはすべて直角な壁１０Ｗとカラーの案内部分１０Ｇの後端と圧入部分１０Ｄの先端とで形成される空間に堆積されることとなるので、樹脂製品１の下に排出されるようなことはない。
したがって、組み付け時や製品使用時にバリが移動して、接続不良や不純物混入の原因になったり、製品の重要な部分に付着してさまざまなトラブルを起こすことは本発明によれば一切起きない。 As described above, according to the present invention, even if the press-fitted collar 20 crushes the mountain 10M and burrs are generated, all the dropped burrs are perpendicular to the wall 10W, the rear end of the collar guide portion 10G, and the press-fitted portion. Since it is deposited in the space formed by the tip of 10D, it is not discharged under the resin product 1.
Therefore, according to the present invention, the burrs move at the time of assembly or use of the product, causing connection failure or impurity contamination, or causing various troubles by adhering to an important part of the product.

本発明に係るカラーと、このカラーが圧入される本発明に係る樹脂製品とを説明する斜視図で、（ａ）は本発明に係るカラーの斜視図で、（イ）は表側、（ロ）は裏側のそれぞれの斜視図である。（ｂ）は樹脂製品の本発明に係る貫通穴の表側斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view for explaining a collar according to the present invention and a resin product according to the present invention into which the collar is press-fitted, wherein (a) is a perspective view of the collar according to the present invention, (A) is a front side, and (B). FIG. 4 is a perspective view of each of the back side. (B) is a front side perspective view of a through hole according to the present invention of a resin product. 図１（ａ）のカラーを図１（ｂ）の樹脂製品に圧入する前後を同時に示す本発明に係る樹脂製品の斜視図である。It is a perspective view of the resin product which concerns on this invention which shows simultaneously before and after press-fitting the color of Fig.1 (a) to the resin product of FIG.1 (b). バリの飛散しない理由を説明する縦断面図で、（ａ）は圧入前、（ｂ）は圧入途中、（ｃ）は圧入完了の図である。It is a longitudinal cross-sectional view explaining the reason which a burr | flash does not scatter, (a) is before press-fitting, (b) is in the middle of press-fitting, (c) is a figure of press-fitting completion. 貫通穴を有する樹脂製品にその樹脂製品より硬いカラーが圧入されて固定された従来製品を説明する図で、（ａ）はカラーの斜視図、（ｂ）は樹脂製品の斜視図である。It is a figure explaining the conventional product by which the color harder than the resin product was press-fitted and fixed to the resin product which has a through-hole, (a) is a perspective view of a color, (b) is a perspective view of a resin product. 図４（ａ）のカラーを図４（ｂ）の樹脂製品に圧入する前後を同時に示す従来の樹脂製品の斜視図である。It is a perspective view of the conventional resin product which shows simultaneously before and after press-fitting the color of Fig.4 (a) to the resin product of FIG.4 (b). バリの発生する理由を説明する縦断面図で、（ａ）は圧入前、（ｂ）は圧入途中、（ｃ）は圧入完了の図である。It is a longitudinal cross-sectional view explaining the reason which a burr | flash generate | occur | produces, (a) is before press-fitting, (b) is in the middle of press-fitting, (c) is a figure of press-fitting completion.

符号の説明Explanation of symbols

１ 本発明に係る樹脂製品
１０ 貫通穴
１０Ａ 被圧入領域
１０Ａｄ 被圧入領域の内径
１０Ｍ 山
１０Ｎ 非圧入領域の内径
１０Ｎｄ 非圧入領域
１０Ｗ 直角な壁
２０、２０１、２０２ 圧入部材（ここでは、カラー）
２０Ｇ 案内部分
２０Ｇｄ 案内部分の外径
２０Ｐ 圧入部分
２０Ｐｄ 圧入部分の外径
２０Ｔ 鍔部分 DESCRIPTION OF SYMBOLS 1 Resin product 10 according to this invention Through-hole 10A Press-fit area | region 10Ad Inner diameter 10M of press-fit area 10N Crest 10N Inner diameter 10Nd of non-press-fit area Non-press-fit area 10W Right-angle wall 20, 201, 202
20G Guide portion 20Gd Guide portion outer diameter 20P Press fit portion 20Pd Press fit outer diameter 20T 鍔 portion

Claims (2)

貫通穴を有する樹脂製品と、前記樹脂製品より硬い材質で造られた圧入部材とを備え、前記圧入部材が前記貫通穴に圧入されて成る圧入部材付き樹脂製品において、
前記貫通穴は、山が形成された被圧入領域を前記圧入部材の挿入側に、かつ、山が形成されていない非圧入領域を該被圧入領域に続けて出口部に向けて備え、
前記被圧入領域の開口穴よりも前記非圧入領域の開口穴が小さく、かつ、前記被圧入領域と前記非圧入領域の境界は直角な壁で繋がっており、
前記被圧入領域の内壁には軸方向に平行に延びる複数の山が形成され、
前記圧入部材は、先端側に小径の案内部分と後端側に大径の圧入部分を前記案内部分に続けて備え、
前記案内部分は前記山を押し潰すことなく前記非圧入領域の開口穴まで挿入され、
前記圧入部分は前記貫通穴に圧入されて前進するとき前記被圧入領域の前記山を押し潰して反力を得ることで前記貫通穴に確実に固定され、
前記圧入部分が前記山を押し潰す際に生じて落下したバリは、前記山と山の間の隙間と前記直角な壁と前記案内部分の後端とで形成される空間に堆積することを特徴とするバリ取り不要の圧入部材付き樹脂製品。」 In a resin product with a press-fitting member comprising a resin product having a through-hole and a press-fitting member made of a material harder than the resin product, the press-fitting member is press-fitted into the through-hole,
The through hole includes a press-fitted region in which a crest is formed on the insertion side of the press-fitting member, and a non-press-fitted region in which no crest is formed toward the outlet part following the press-fitted region,
The opening hole of the non-pressing area is smaller than the opening hole of the pressed area, and the boundary between the pressed area and the non-pressing area is connected by a right-angle wall,
A plurality of peaks extending parallel to the axial direction are formed on the inner wall of the press-fitted region,
The press-fitting member is provided with a small-diameter guide portion on the front end side and a large-diameter press-fit portion on the rear end side following the guide portion,
The guide part is inserted up to the opening hole of the non-press-fit area without crushing the mountain,
The press-fitted portion is securely fixed to the through-hole by obtaining a reaction force by crushing the crest of the press-fitted region when the press-fitted portion is pressed into the through-hole to advance,
The burr that has been dropped when the press-fitted portion crushes the mountain is accumulated in a space formed by the gap between the mountain and the mountain, the right-angle wall, and the rear end of the guide portion. Resin products with press-fitting members that do not require deburring. " 前記樹脂製品の前記非圧入領域の貫通穴内側の横断面形状と前記圧入部材の前記案内部分の外側の横断面形状とが略同一であることを特徴とする請求項１記載の圧入部材付き樹脂製品。   The resin with a press-fitting member according to claim 1, wherein a cross-sectional shape inside the through hole of the non-press-fitted region of the resin product is substantially the same as a cross-sectional shape outside the guide portion of the press-fitting member. Product.
JP2008317305A 2008-12-12 2008-12-12 Resin products with press-fit members Expired - Fee Related JP5464728B2 (en)

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