JP2005254559A - Hot plate welded structure of resin tank and resin component - Google Patents

Hot plate welded structure of resin tank and resin component Download PDF

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Publication number
JP2005254559A
JP2005254559A JP2004067717A JP2004067717A JP2005254559A JP 2005254559 A JP2005254559 A JP 2005254559A JP 2004067717 A JP2004067717 A JP 2004067717A JP 2004067717 A JP2004067717 A JP 2004067717A JP 2005254559 A JP2005254559 A JP 2005254559A
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protrusion
hot plate
resin
tank
welding
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JP2004067717A
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JP4140538B2 (en
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Masanori Akagi
正紀 赤木
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Toyota Motor Corp
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Toyota Motor 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
    • 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
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • 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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7829—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being integral with at least one of the parts to be joined
    • 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
    • B29C65/82—Testing the joint
    • 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
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30221—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being point-like
    • 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
    • B29C66/70—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
    • B29C66/73—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • B29C65/82—Testing the joint
    • B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide the hot plate welded structure of a resin tank and a resin component which can appropriately and surely control an initial melting margin, a residual melting margin, and the quantity of pushing even when a large-scale inspection such as a destructive inspection is not carried out. <P>SOLUTION: A tank side projection 16 comprising a first protrusion 18 and a second protrusion 20 is formed integrally around the opening 12 of a fuel tank 10 made of a resin. A hose side protrusion 30 comprising a first protrusion 32 and a second projection 34 is formed integrally at a position which does not lap the tank side protrusion 16 in the peripheral direction also in an inlet hose joint 14 made of a resin. During heating/melting by a hot plate, the first protrusions 18 and 32 are melted; however the heights of the second protrusions 20 and 34 are set up so that they are not melted. By confirming whether the protrusions are melted or not, it can be determined whether the initial melting margin and the residual melting margin are good or not. By confirming the distance (gap) between the opposite end surfaces of the tank side protrusion 16 and the hose side protrusion 30 after welding, for example, visually, it can be determined whether the quantity of pushing is good or not. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、樹脂タンクの所定位置に樹脂部品を熱板溶接するための樹脂タンクと樹脂部品との熱板溶接構造に関する。   The present invention relates to a hot plate welding structure of a resin tank and a resin component for hot plate welding a resin component to a predetermined position of a resin tank.

樹脂タンク、例えば、自動車に搭載される樹脂製のフューエルタンクでは、一般にタンク本体がブロー成形によって製造されるため、フューエルタンクの構成部品であるインレットホース結合部やブリーザホース結合部等の樹脂部品をタンク本体に一体に成形することが難しい。このため、これらの樹脂部品はタンク本体とは別個独立に樹脂成形され、成形後に当該樹脂部品を熱板溶接によってタンク本体の所定位置に取り付けている。   In resin tanks, for example, resin fuel tanks mounted on automobiles, since the tank body is generally manufactured by blow molding, resin parts such as inlet hose coupling parts and breather hose coupling parts, which are constituent parts of the fuel tank, are used. It is difficult to form the tank body in one piece. For this reason, these resin parts are resin-molded independently from the tank body, and after molding, the resin parts are attached to predetermined positions of the tank body by hot plate welding.

以下、図４及び図５を用いて、従来のフューエルタンクとインレットホース結合部との熱板溶接について説明する。図４には、フューエルタンク１００の開口部１０２及びインレットホース結合部１０４が熱板溶接される前の状態で示されている。この図に示されるように、開口部１０２は溶着部１０２Ａ及び取付座１０２Ｂを有しており、又インレットホース結合部１０４は大径の基部１０４Ａ及びパイプ状かつ小径の結合部１０４Ｂを備えている。   Hereinafter, a conventional hot plate welding between the fuel tank and the inlet hose joint will be described with reference to FIGS. 4 and 5. In FIG. 4, the opening 102 of the fuel tank 100 and the inlet hose coupling portion 104 are shown in a state before hot plate welding. As shown in this figure, the opening portion 102 has a welded portion 102A and a mounting seat 102B, and the inlet hose coupling portion 104 has a large-diameter base portion 104A and a pipe-like and small-diameter coupling portion 104B. .

図５（Ａ）、（Ｂ）には、熱板溶接前後の要部の状態が拡大して示されている。図５（Ａ）に示される二点鎖線部分が、図示しない熱板によって溶融される初期溶融代１０６（厚さｔ１）である。また、斜線部分は、図示しない熱板によって実際に溶融されたときの熱影響部１０８（厚さｔ２）である。そして、熱板を除去した後に、図５（Ａ）に示される状態からインレットホース結合部１０４の基部１０４Ａとフューエルタンク１００の開口部１０２とを所定の加圧力で相互に押付けることにより、インレットホース結合部１０４がフューエルタンク１００の開口部１０２の溶着部１０２Ａ（図４参照）に溶着される。この場合、図５（Ｂ）の斜線部分が溶着後の残存溶融代１１０（厚さｔ３）であり、図５（Ａ）の上下の熱影響部１０８の厚さｔ２の合計から図５（Ｂ）の残存溶融代１１０（厚さｔ３）を差し引いた寸法（ａ）がトータルの押し込み量となる。
特開２００３−７１９３９号公報 特開２００３−１８１９２８号公報 5 (A) and 5 (B), the state of the main part before and after hot plate welding is shown enlarged. A two-dot chain line portion shown in FIG. 5A is an initial melting allowance 106 (thickness t1) melted by a hot plate (not shown). The shaded portion is the heat affected zone 108 (thickness t2) when actually melted by a hot plate (not shown). Then, after removing the hot plate, the inlet 104 is pressed against the inlet 104 of the inlet hose coupling portion 104 and the opening 102 of the fuel tank 100 from the state shown in FIG. The hose coupling portion 104 is welded to the welding portion 102A (see FIG. 4) of the opening portion 102 of the fuel tank 100. In this case, the hatched portion in FIG. 5B is the remaining melt allowance 110 (thickness t3) after welding, and the sum of the thicknesses t2 of the upper and lower heat affected zone 108 in FIG. ) (A) obtained by subtracting the remaining melting allowance 110 (thickness t3) is the total pushing amount.
JP 2003-71939 A JP 2003-181928 A

上記従来の熱板溶接による場合、初期溶融代１０６（ｔ１）、残存溶融代１１０（ｔ３）、押し込み量（ａ）の管理が非常に重要になるが、インレットホース結合部１０４等の部品精度があまり良くなかったとか、溶着時の部品の保持力が不十分であったとか、溶着部の剛性が不足していた等の様々な要因により、初期溶融代不足（加熱不足）、残存溶融代不足、押し込み量不足等の不具合が発生する可能性がある。しかし、従来では、初期溶融代１０６（ｔ１）、残存溶融代１１０（ｔ３）、押し込み量（ａ）は、溶接設備側での位置、温度、時間、押し込み力等の管理に頼るしかなく、溶着後の品質確認は別途破壊検査を実施して確認していた。   In the case of the above-described conventional hot plate welding, it is very important to manage the initial melting allowance 106 (t1), the remaining melting allowance 110 (t3), and the push-in amount (a). Due to various factors, such as not so good, insufficient holding power of parts at the time of welding, or insufficient rigidity of the welded part, insufficient initial melting allowance (insufficient heating), insufficient residual melting allowance There is a possibility that problems such as insufficient push-in amount occur. However, in the past, the initial melting allowance 106 (t1), the remaining melt allowance 110 (t3), and the push-in amount (a) have to rely on the management of the position, temperature, time, push-in force, etc. on the welding equipment side. Later quality confirmation was confirmed by conducting a separate destructive inspection.

上記に対し、溶着時にできる溶着バリ・溶着ビード１１２（図５（Ｂ）参照）が全周に存在することを確認することにより、溶着後の品質を管理する方法もあるが、溶着バリ・溶着ビードがインレットホース結合部１０４及びフューエルタンク１００の開口部１０２を熱板に押付けた際にできたものなのか、それとも加圧時に押し出されてできたものなのかの判断が難しい。また、初期にできたバリで溶着バリ・溶着ビードが隠れてしまうこともあるので、この方法はあまり確実ではなく、推奨できない。   In contrast to the above, there is a method of controlling the quality after welding by confirming that there are welding burrs / welding beads 112 (see FIG. 5B) formed at the time of welding. It is difficult to determine whether the bead is formed when the inlet hose coupling portion 104 and the opening 102 of the fuel tank 100 are pressed against the hot plate, or whether the bead is formed when pressed. In addition, since the welding burr and the weld bead may be hidden by the burr formed in the initial stage, this method is not very reliable and is not recommended.

本発明は上記事実を考慮し、破壊検査等の大掛かりな検査をしなくても、初期溶融代、残存溶融代、及び押し込み量の管理を適切かつ確実に行うことができる樹脂タンクと樹脂部品との熱板溶接構造を得ることが目的である。   In view of the above facts, the present invention provides a resin tank and a resin component that can appropriately and reliably manage the initial melting allowance, the remaining melting allowance, and the push-in amount without performing a large-scale inspection such as a destructive inspection. It is an object to obtain a hot plate welded structure.

請求項１記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、樹脂タンクの所定位置に樹脂部品を熱板溶接するための樹脂タンクと樹脂部品との熱板溶接構造であって、樹脂タンク及び樹脂部品の少なくとも一方に、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えた溶着品質判定手段を一体に設けた、ことを特徴としている。   The hot plate welding structure between the resin tank and the resin component according to the first aspect of the present invention is a hot plate welding structure between the resin tank and the resin component for hot plate welding the resin component to a predetermined position of the resin tank. In addition, at least one of the resin tank and the resin component has a first protrusion having a protrusion height determined corresponding to the initial melting allowance at the time of heating and melting with a hot plate, and protrudes in the same direction as the first protrusion. And a second projection portion having a projection height lower than that of the first projection portion and a projection height determined in accordance with the remaining melting allowance at the time of welding. It is characterized by that.

請求項２記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、樹脂タンクの所定位置に樹脂部品を熱板溶接するための樹脂タンクと樹脂部品との熱板溶接構造であって、樹脂タンクにおける溶着部の周囲に一体に設けられ、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えたタンク側溶着品質判定手段と、樹脂部品における溶着部の周囲に一体に設けられると共に前記タンク側溶着品質判定手段と周方向にラップしない位置に配置され、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えた部品側溶着品質判定手段と、を有することを特徴としている。   The hot plate welding structure between the resin tank and the resin component according to the present invention as defined in claim 2 is a hot plate welding structure between the resin tank and the resin component for hot plate welding the resin component to a predetermined position of the resin tank. A first projection provided integrally around the welded portion of the resin tank and having a projection height determined in accordance with the initial melting allowance at the time of heating and melting with a hot plate, and the same as the first projection And a second protrusion having a protrusion height lower than that of the first protrusion and having a protrusion height determined in accordance with the remaining melting allowance at the time of welding. And is provided integrally around the welded portion of the resin part and is disposed at a position not wrapped in the circumferential direction with the tank-side weld quality judging means, and has a protruding height corresponding to the initial melting allowance at the time of heating and melting with a hot plate. A first protrusion having a predetermined length, and the first protrusion A part-side weld quality judgment comprising: a second protrusion that protrudes in one direction and has a protrusion height lower than that of the first protrusion and a protrusion height determined in accordance with the remaining melting allowance at the time of welding. And means.

請求項３記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、請求項１又は請求項２記載の発明において、前記第１突起部は溶着部の外縁に対して離間して配置されており、当該第１突起部と溶着部の外縁との間には所定幅の溝が形成されている、ことを特徴としている。   According to a third aspect of the present invention, there is provided the hot plate welded structure between the resin tank and the resin component according to the first or second aspect, wherein the first protrusion is separated from the outer edge of the welded portion. A groove having a predetermined width is formed between the first protrusion and the outer edge of the welded portion.

請求項４記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、請求項１乃至請求項３のいずれかに記載の発明において、前記第１突起部及び前記第２突起部は一体かつ略階段形状に形成されており、当該第１突起部の端面には熱板での加熱溶融時に溶融して消失する第１識別部が形成されていると共に、当該第２突起部の端面には熱板での加熱溶融時には溶融しない第２識別部が形成されている、ことを特徴としている。   According to a fourth aspect of the present invention, there is provided the hot plate welded structure between the resin tank and the resin component according to any one of the first to third aspects, wherein the first protrusion and the second protrusion are The first protrusion is integrally formed in a substantially staircase shape, and a first identification part that melts and disappears when heated and melted by a hot plate is formed on the end face of the first protrusion, and the end face of the second protrusion Is characterized in that a second discriminating portion that does not melt when heated and melted by a hot plate is formed.

請求項１記載の本発明によれば、樹脂タンクの所定位置に樹脂部品を熱板溶着するには、まず、樹脂タンクの溶着部と樹脂部品の溶着部とを熱板にそれぞれ押し付け、双方の溶着部をそれぞれ溶融させる。次に、熱板除去後に、溶融状態にある樹脂タンクと樹脂部品との溶着部同士を所定の押し込み力で相互に押し付ける。これにより、双方の溶着部同士が密着して一体化される。その後、溶着部が硬化すれば、樹脂タンクと樹脂部品との熱板溶接が完了する。   According to the first aspect of the present invention, in order to weld the resin part to the predetermined position of the resin tank, first, the welded part of the resin tank and the welded part of the resin part are respectively pressed against the hot plate, Each welded part is melted. Next, after the hot plate is removed, the welded portions of the molten resin tank and the resin parts are pressed against each other with a predetermined pressing force. Thereby, both welding parts closely_contact | adhere and are integrated. Thereafter, when the welded portion is cured, the hot plate welding between the resin tank and the resin component is completed.

ここで、本発明では、樹脂タンク及び樹脂部品の少なくとも一方に溶着品質判定手段を一体に設けたので、以下の如くして、溶着部の溶接品質を判定するすることができる。   Here, in the present invention, since the welding quality determining means is integrally provided in at least one of the resin tank and the resin component, the welding quality of the welded portion can be determined as follows.

まず、第１突起部は初期溶融代に対応して設けられているため、熱板での加熱溶融時に第１突起部は必ず溶融していなればならない。これが第１条件となる。従って、仮にこの第１突起部が溶融していない場合には、「加熱溶融時に溶着部の加熱不足が生じた」と判定することができる。   First, since the first protrusions are provided corresponding to the initial melting allowance, the first protrusions must be melted at the time of heating and melting with a hot plate. This is the first condition. Therefore, if the first protrusion is not melted, it can be determined that “the heating of the welded part has been insufficient during heating and melting”.

次に、第１突起部と同一方向へ突出されかつ第１突起部よりも突出高さが低く設定された第２突起部は残存溶融代に対応して設けられているため、熱板での加熱溶融時に第２突起部は溶融してはならない。これが第２条件となる。従って、仮にこの第２突起部が溶融している場合には、「熱板での加熱溶融時に溶着部を加熱し過ぎた」か又は「加熱時の押し込み力が強過ぎた」と判定することができる。   Next, since the second protrusion that protrudes in the same direction as the first protrusion and has a protrusion height lower than the first protrusion is provided corresponding to the remaining melting allowance, The second protrusion must not melt during heating and melting. This is the second condition. Therefore, if the second protrusion is melted, it is determined that "the welded part has been heated too much when heated and melted on the hot plate" or "the pushing force during heating is too strong". Can do.

さらに、溶着後に溶融後の第１突起部の端面の相対位置を目視又はゲージ等の測定器具を使って測定し、当該測定値が予め設定した目標管理値（許容管理値）に入っているかどうかを確認する。確認した結果、実測値が目標管理値以内にあれば、「溶着時の押し込み量は適正であった」と判定することができる。逆に、実測値が目標管理値以内になければ、「溶着時の押し込み力が不足していた」か又は「溶着時の押し込み力が強過ぎた」と判定することができる。   Furthermore, after welding, measure the relative position of the end face of the first projection after melting visually or using a measuring instrument such as a gauge, and whether the measured value falls within the preset target management value (allowable management value). Confirm. As a result of the confirmation, if the actual measurement value is within the target management value, it can be determined that “the amount of pushing during welding was appropriate”. Conversely, if the measured value is not within the target management value, it can be determined that “the pushing force at the time of welding was insufficient” or “the pushing force at the time of welding was too strong”.

上記より、本発明によれば、熱板溶接時の良否を判定する際の重要なファクターである初期溶融代、残存溶融代、及び押し込み量のすべてを簡便な方法で確実に確認することができる。   As described above, according to the present invention, all of the initial melting allowance, the remaining melting allowance, and the indentation amount, which are important factors in determining the quality during hot plate welding, can be reliably confirmed by a simple method. .

請求項２記載の本発明によれば、樹脂タンクの所定位置に樹脂部品を熱板溶着するには、まず、樹脂タンクの溶着部と樹脂部品の溶着部とを熱板にそれぞれ押し付け、双方の溶着部をそれぞれ溶融させる。次に、熱板除去後に、溶融状態にある樹脂タンクと樹脂部品との溶着部同士を所定の押し込み力で相互に押し付ける。これにより、双方の溶着部同士が密着して一体化される。その後、溶着部が硬化すれば、樹脂タンクと樹脂部品との熱板溶接が完了する。   According to the second aspect of the present invention, in order to weld the resin part to the predetermined position of the resin tank, first, the welded part of the resin tank and the welded part of the resin part are respectively pressed against the hot plate, Each welded part is melted. Next, after the hot plate is removed, the welded portions of the molten resin tank and the resin parts are pressed against each other with a predetermined pressing force. Thereby, both welding parts closely_contact | adhere and are integrated. Thereafter, when the welded portion is cured, the hot plate welding between the resin tank and the resin component is completed.

ここで、本発明では、樹脂タンクにおける溶着部の周囲にタンク側溶着品質判定手段を一体に設けると共に、樹脂部品における溶着部の周囲でタンク側溶着品質判定手段と周方向にラップしない位置に部品側品質判定手段を一体に設けたので、以下の如くして、溶着部の溶接品質を判定するすることができる。   Here, in the present invention, the tank-side welding quality determining means is integrally provided around the welded portion in the resin tank, and the part is not wrapped around the welded part in the resin part in the circumferential direction with the tank-side welded quality judging means. Since the side quality determination means is provided integrally, the weld quality of the welded portion can be determined as follows.

まず、タンク側溶着品質判定手段の第１突起部及び部品側溶着品質判定手段の第１突起部は初期溶融代に対応して設けられているため、熱板での加熱溶融時に双方の第１突起部は必ず溶融していなればならない。これが第１条件となる。従って、仮にこの第１突起部が溶融していない場合には、「加熱溶融時に溶着部の加熱不足が生じた」と判定することができる。   First, since the first protrusion of the tank-side welding quality determining means and the first protrusion of the component-side welding quality determining means are provided corresponding to the initial melting allowance, both the first protrusions at the time of heating and melting on the hot platen are provided. The protrusion must be melted. This is the first condition. Therefore, if the first protrusion is not melted, it can be determined that “the heating of the welded part has been insufficient during heating and melting”.

次に、第１突起部と同一方向へ突出されかつ第１突起部よりも突出高さが低く設定された第２突起部は残存溶融代に対応して設けられているため、熱板での加熱溶融時に第２突起部は溶融してはならない。これが第２条件となる。従って、仮にこの第２突起部が溶融している場合には、「熱板での加熱溶融時に溶着部を加熱し過ぎた」か又は「加熱時の押し込み力が強過ぎた」と判定することができる。   Next, since the second protrusion that protrudes in the same direction as the first protrusion and has a protrusion height lower than the first protrusion is provided corresponding to the remaining melting allowance, The second protrusion must not melt during heating and melting. This is the second condition. Therefore, if the second protrusion is melted, it is determined that "the welded part has been heated too much when heated and melted on the hot plate" or "the pushing force during heating is too strong". Can do.

さらに、溶着後にタンク側溶着品質判定手段及び部品側溶着品質判定手段の溶融後の第１突起部の端面の相対位置を目視又はゲージ等の測定器具を使って測定し、当該測定値が予め設定した目標管理値（許容管理値）に入っているかどうかを確認する。確認した結果、実測値が目標管理値以内にあれば、「溶着時の押し込み量は適正であった」と判定することができる。逆に、実測値が目標管理値以内になければ、「溶着時の押し込み力が不足していた」か又は「溶着時の押し込み力が強過ぎた」と判定することができる。   Further, after welding, the relative position of the end face of the first projection after melting of the tank side welding quality judgment unit and the part side welding quality judgment unit is measured visually or using a measuring instrument such as a gauge, and the measured value is set in advance. Whether the target management value (allowable management value) is within the specified range. As a result of the confirmation, if the actual measurement value is within the target management value, it can be determined that “the amount of pushing during welding was appropriate”. Conversely, if the measured value is not within the target management value, it can be determined that “the pushing force at the time of welding was insufficient” or “the pushing force at the time of welding was too strong”.

上記より、本発明によれば、熱板溶接時の良否を判定する際の重要なファクターである初期溶融代、残存溶融代、及び押し込み量のすべてを簡便な方法で確実に確認することができる。   As described above, according to the present invention, all of the initial melting allowance, the remaining melting allowance, and the indentation amount, which are important factors in determining the quality during hot plate welding, can be reliably confirmed by a simple method. .

請求項３記載の本発明によれば、第１突起部は溶着部の外縁に対して離間して配置されており、当該第１突起部と溶着部の外縁との間には所定幅の溝が形成されているため、溶着時の溶着バリ・溶着ビードを溝へ逃がすことができる。このため、初期溶融代を規定する第１突起部の機能が阻害されるのを防止することができる。つまり、仮に溝を設定せず第１突起部を溶着部に隣接して設けた場合、熱板での加熱溶融時に溶着部に生じる溶着バリ・溶着ビードが第１突起部にそのまま雪崩れ込み、当該第１突起部を溶かして初期溶融代が判別できなくなる可能性がある。しかし、本発明のように溝を設けておけば、溶着部の溶着バリ・溶着ビードによって第１突起部に悪影響が及ぶのを未然に防止することができる。   According to the third aspect of the present invention, the first protrusion is disposed away from the outer edge of the welded portion, and a groove having a predetermined width is provided between the first protrusion and the outer edge of the welded portion. Therefore, the welding burr and welding bead at the time of welding can be released to the groove. For this reason, it can prevent that the function of the 1st projection part which prescribes | regulates an initial fusion allowance is inhibited. In other words, if the first protrusion is provided adjacent to the welded part without setting a groove, the welding burr / weld bead generated in the welded part at the time of heating and melting with the hot plate is crushed into the first protrusion as it is, There is a possibility that the initial melting allowance cannot be determined by melting the first protrusion. However, if the groove is provided as in the present invention, it is possible to prevent the first protrusion from being adversely affected by the welding burr / welding bead of the welding portion.

請求項４記載の本発明によれば、第１突起部及び第２突起部は一体かつ略階段形状に形成されており、当該第１突起部の端面には熱板での加熱溶融時に溶融して消失する第１識別部が形成されていると共に、当該第２突起部の端面には熱板での加熱溶融時には溶融しない第２識別部が形成されているので、第１識別部が消失していれば、第１突起部は熱板での加熱溶融によって溶融したことが簡単に判る。また、溶着後に第２識別部が溶けているか否かを視認すれば、加熱し過ぎであったか否かが簡単に判る。   According to the fourth aspect of the present invention, the first protrusion and the second protrusion are integrally formed in a substantially step shape, and the end surface of the first protrusion is melted at the time of heating and melting with a hot plate. The first identifying portion disappears and the second identifying portion is formed on the end surface of the second projection portion and does not melt when heated and melted by the hot plate. If it is, it can be easily understood that the first protrusion is melted by heating and melting on the hot plate. In addition, if it is visually confirmed whether or not the second identification portion is melted after welding, it can be easily determined whether or not the second identification portion has been heated too much.

以上説明したように、請求項１記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、樹脂タンク及び樹脂部品の少なくとも一方に、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えた溶着品質判定手段を一体に設けたので、破壊検査等の大掛かりな検査をしなくても、初期溶融代、残存溶融代、及び押し込み量の管理を適切かつ確実に行うことができるという優れた効果を有する。   As described above, the hot plate welded structure of the resin tank and the resin component according to the present invention according to claim 1 is used for at least one of the resin tank and the resin component in the initial melting allowance at the time of heat melting with the hot plate. Correspondingly to the first protrusion with a corresponding protrusion height, the protrusion protruding in the same direction as the first protrusion, the protrusion height being lower than the first protrusion, and the remaining melting allowance at the time of welding Since the welding quality determination means including the second protrusion portion having a protruding height determined in an integrated manner, the initial melting allowance, the remaining melting allowance, and the It has an excellent effect that the amount of pushing can be managed appropriately and reliably.

請求項２記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、樹脂タンクにおける溶着部の周囲に一体に設けられ、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えたタンク側溶着品質判定手段と、樹脂部品における溶着部の周囲に一体に設けられると共に前記タンク側溶着品質判定手段と周方向にラップしない位置に配置され、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えた部品側溶着品質判定手段と、を有するので、破壊検査等の大掛かりな検査をしなくても、初期溶融代、残存溶融代、及び押し込み量の管理を適切かつ確実に行うことができるという優れた効果を有する。   The hot plate welding structure of the resin tank and the resin component according to the present invention as set forth in claim 2 is provided integrally around the welded portion of the resin tank, and corresponds to the initial melting allowance at the time of heat melting with the hot plate. A first protrusion having a defined protrusion height, and a protrusion height that protrudes in the same direction as the first protrusion, is lower than the first protrusion, and corresponds to the remaining melting allowance during welding. A tank-side weld quality determining means provided with a second protrusion having a predetermined length, and a tank-side weld quality determining means that is integrally provided around the welded portion of the resin component and that does not wrap in the circumferential direction with the tank-side weld quality determining means. A first protrusion having a protrusion height determined in correspondence with an initial melting allowance at the time of heat-melting with a hot plate, and protruding in the same direction as the first protrusion and being more than the first protrusion The protrusion height is low and corresponds to the remaining melting allowance during welding. Since there is a part-side weld quality judgment means having a predetermined second protrusion, management of the initial melting allowance, residual melting allowance, and indentation amount is possible without performing extensive inspection such as destructive inspection. It has the outstanding effect that it can perform appropriately and reliably.

請求項３記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、請求項１又は請求項２記載の発明において、第１突起部は溶着部の外縁に対して離間して配置されており、当該第１突起部と溶着部の外縁との間には所定幅の溝が形成されているため、溶着時の溶着バリ・溶着ビードを溝へ逃がすことができ、その結果、溶着部の溶着品質の判定に対する信頼性を向上させることができるという優れた効果を有する。   According to a third aspect of the present invention, there is provided the hot plate welded structure between the resin tank and the resin component according to the first or second aspect, wherein the first protrusion is disposed away from the outer edge of the welded portion. Since a groove having a predetermined width is formed between the first protrusion and the outer edge of the welded portion, the welding burr / weld bead at the time of welding can be released to the groove. It has the outstanding effect that the reliability with respect to the determination of the welding quality of a part can be improved.

請求項４記載の本発明に係る樹脂タンクと樹脂部品との熱板溶接構造は、請求項１乃至請求項３のいずれかに記載の発明において、第１突起部及び第２突起部は一体かつ略階段形状に形成されており、当該第１突起部の端面には熱板での加熱溶融時に溶融して消失する第１識別部が形成されていると共に、当該第２突起部の端面には熱板での加熱溶融時には溶融しない第２識別部が形成されているので、前述した第１条件及び第２条件の適否を簡単に判断することができるという優れた効果を有する。   According to a fourth aspect of the present invention, there is provided the hot plate welded structure between the resin tank and the resin component according to any one of the first to third aspects, wherein the first protrusion and the second protrusion are integrated with each other. It is formed in a substantially staircase shape, and a first identification portion that melts and disappears when heated and melted by a hot plate is formed on the end surface of the first projection, and on the end surface of the second projection Since the second identification portion that does not melt at the time of heating and melting with the hot plate is formed, it has an excellent effect that the suitability of the first condition and the second condition described above can be easily determined.

以下、図１〜図５を用いて、本発明に係る樹脂タンクと樹脂部品との熱板溶接構造の幾つかの実施形態について説明する。   Hereinafter, several embodiments of a hot plate welding structure between a resin tank and a resin component according to the present invention will be described with reference to FIGS.

図１には、本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造の要部を拡大した斜視図が示されている。樹脂タンクとしてのフューエルタンク１０は中空の略直方体形状を成しており、ブロー成形によって製造されている。このフューエルタンク１０の所定位置には、平面視で円形の開口部１２が形成されている。この開口部１２には、図示しないフィラーパイプが結合される樹脂部品としてのインレットホース結合部１４が熱板溶接によって溶着されるようになっている。   FIG. 1 is an enlarged perspective view of a main part of a hot plate welding structure of a resin tank and a resin component according to this embodiment. A fuel tank 10 as a resin tank has a hollow, substantially rectangular parallelepiped shape, and is manufactured by blow molding. A circular opening 12 is formed at a predetermined position of the fuel tank 10 in a plan view. An inlet hose joint 14 as a resin part to which a filler pipe (not shown) is joined is welded to the opening 12 by hot plate welding.

インレットホース結合部１４は全体として略パイプ形状を成しており、扁平な円筒形状に形成されると共にフューエルタンク１０の開口部１２に溶着される基部１４Aと、この基部１４Aの軸芯部から同軸上に突出された結合部１４Bと、によって構成されている。この結合部１４Bに図示しないフィラーパイプが結合される。   The inlet hose coupling portion 14 has a substantially pipe shape as a whole, is formed in a flat cylindrical shape, and is coaxially formed from a base portion 14A welded to the opening 12 of the fuel tank 10 and an axial core portion of the base portion 14A. And a coupling portion 14B protruding upward. A filler pipe (not shown) is coupled to the coupling portion 14B.

ここで、図１及び図２に示されるように、フューエルタンク１０側の開口部１２の周囲（溶着部１２Ａから外れた位置であればよい）には、周方向に所定の間隔（本実施形態では、一例として９０°間隔）でタンク側溶着品質判定手段としてのタンク側突起部１６が一体に形成されている。このタンク側突起部１６は側面視で略階段形状を成しており、かつ開口部１２の取付座１２Ｂに隣接して配置されている。   Here, as shown in FIG. 1 and FIG. 2, there is a predetermined interval in the circumferential direction around the opening 12 on the fuel tank 10 side (which may be a position that is disengaged from the welded portion 12 </ b> A) (this embodiment). Then, as an example, tank side protrusions 16 as tank side welding quality judgment means are integrally formed at intervals of 90 °. The tank-side protrusion 16 has a substantially step shape when viewed from the side, and is disposed adjacent to the mounting seat 12 </ b> B of the opening 12.

より具体的には、タンク側突起部１６は、その上段を構成する第１突起部１８と、この第１突起部１８と一体に形成されタンク側突起部１６の下段を構成する第２突起部２０と、によって構成されている。第１突起部１８のタンク一般面１０Ａからの突出高さｈ１（図２（Ａ）参照）は、熱板２２での加熱溶融時の初期溶融代２４に対応して定められている。なお、ここでいう「対応して」とは「関係付けられて」の意であり、必要かつ十分な初期溶融代を予め算定しておき、それが実際の加熱溶融時において実現されるように第１突起部１８の突出高さｈ１を定めているという意味である（以下において使用する「対応して」の語も、同様の使い方をする）。   More specifically, the tank-side protrusion 16 includes a first protrusion 18 that constitutes the upper stage thereof, and a second protrusion that is integrally formed with the first protrusion 18 and constitutes the lower stage of the tank-side protrusion 16. 20. The protrusion height h1 (see FIG. 2A) of the first protrusion 18 from the tank general surface 10A is determined corresponding to the initial melting allowance 24 when the hot plate 22 is heated and melted. In addition, “corresponding” here means “related”, and a necessary and sufficient initial melting allowance is calculated in advance so that it can be realized at the time of actual heating and melting. This means that the protrusion height h1 of the first protrusion 18 is determined (the word “correspondingly” used in the following is used in the same manner).

また、第２突起部２０のタンク一般面１０Ａからの突出高さｈ２（図２（Ａ）参照）は、第１突起部１８の突出高さｈ１よりも低くかつ溶着時の残存溶融代（従来図である図５（Ｂ）の１１０参照）に対応して定められている。予め設定された初期溶融代にさらに、第１突起部１８の平面形状は第２突起部２０よりも小さく設定されており、径方向の外側に配置されている。これにより、第１突起部１８と開口部１２の取付座１２Ｂとの間に所定の溝幅の溝２６が形成されている。   Further, the protrusion height h2 (see FIG. 2A) of the second protrusion 20 from the tank general surface 10A is lower than the protrusion height h1 of the first protrusion 18 and the remaining melting allowance at the time of welding (conventional) It is determined in correspondence with 110 in FIG. 5B. In addition to the preset initial melting allowance, the planar shape of the first protrusion 18 is set smaller than that of the second protrusion 20, and is arranged on the outer side in the radial direction. As a result, a groove 26 having a predetermined groove width is formed between the first protrusion 18 and the mounting seat 12 </ b> B of the opening 12.

一方、インレットホース結合部１４の基部１４Aの周囲（溶着部２８から外れた外周面であればよい）には、周方向に所定の間隔（本実施形態では、一例として９０°間隔）で部品側溶着品質判定手段としてのホース側突起部３０が一体に形成されている。これらのホース側突起部３０は、タンク側突起部１６と周方向にラップしないように配置されている。すなわち、各ホース側突起部３０は、これに対応する各タンク側突起部１６と斜向かいに対向している。従って、溶着後の状態では、図２（Ｂ）に示されるように、タンク側突起部１６とホース側突起部３０とは周方向にずれた位置で互いに宙に浮いた状態で保持されている。   On the other hand, around the base portion 14A of the inlet hose coupling portion 14 (which may be an outer peripheral surface removed from the welded portion 28), the component side at a predetermined interval in the circumferential direction (in this embodiment, as an example, 90 ° interval). A hose-side protrusion 30 as a welding quality determination means is integrally formed. These hose side protrusions 30 are arranged so as not to wrap around the tank side protrusions 16 in the circumferential direction. That is, each hose side protrusion part 30 is opposed to each tank side protrusion part 16 corresponding to this diagonally. Therefore, in the state after welding, as shown in FIG. 2B, the tank side protrusion 16 and the hose side protrusion 30 are held in a state of floating in the air at positions shifted in the circumferential direction. .

より具体的には、ホース側突起部３０は、その下段を構成する第１突起部３２と、この第１突起部３２と一体に形成されホース側突起部３０の上段を構成する第２突起部３４と、によって構成されている。第１突起部３２の突出高さｈ３（即ち、ホース側突起部３０の上端面からの高さである。図２（Ａ）参照）は、熱板２２での加熱溶融時の初期溶融代２４に対応して定められている。また、第２突起部３４の突出高さｈ４（図２（Ａ）参照）は、第１突起部３２の突出高さｈ３よりも低くかつ溶着時の残存溶融代（従来図である図５（Ｂ）の１１０参照）に対応して定められている。なお、本実施形態では、ｈ１＝ｈ３、ｈ２＝ｈ４に設定されている。さらに、第１突起部３２の平面形状は第２突起部３４よりも小さく設定されており、径方向の外側に配置されている。これにより、第１突起部３２とインレットホース結合部１４の基部１４Aの外周面の間には、所定の溝幅の溝３６（図１参照）が形成されている。   More specifically, the hose-side protrusion 30 includes a first protrusion 32 that forms the lower stage thereof, and a second protrusion that is formed integrally with the first protrusion 32 and forms the upper stage of the hose-side protrusion 30. 34. The protrusion height h3 of the first protrusion 32 (that is, the height from the upper end surface of the hose-side protrusion 30. See FIG. 2A) is the initial melting allowance 24 when the hot plate 22 is heated and melted. It is determined corresponding to The protrusion height h4 of the second protrusion 34 (see FIG. 2A) is lower than the protrusion height h3 of the first protrusion 32, and the remaining melting allowance at the time of welding (FIG. 5 (conventional view)). B) (see 110)). In this embodiment, h1 = h3 and h2 = h4 are set. Furthermore, the planar shape of the first protrusion 32 is set to be smaller than that of the second protrusion 34, and is disposed on the outer side in the radial direction. Thus, a groove 36 (see FIG. 1) having a predetermined groove width is formed between the first protrusion 32 and the outer peripheral surface of the base portion 14A of the inlet hose coupling portion 14.

次に、本実施形態の作用並びに効果について説明する。   Next, the operation and effect of this embodiment will be described.

フューエルタンク１０の開口部１２にインレットホース結合部１４を熱板溶着するには、まず、図２（Ａ）に示されるように、フューエルタンク１０の開口部１２の溶着部１２Ａとインレットホース結合部１４の溶着部２８とを、熱板２２の上下両側にそれぞれ位置決めした状態でセットする。続いて、フューエルタンク１０の開口部１２の溶着部１２Ａ及びインレットホース結合部１４の溶着部２８を熱板２２にそれぞれ押し付け、双方の溶着部１２Ａ、２８をそれぞれ溶融させる。次に、熱板２２を除去した後に、溶融状態にあるフューエルタンク１０とインレットホース結合部１４との溶着部１２Ａ、２８同士を所定の押し込み力で相互に押し付ける。これにより、双方の溶着部１２Ａ、２８同士が密着して一体化される。その後、溶着部１２Ａ、２８が硬化すれば、フューエルタンク１０の開口部１２とインレットホース結合部１４との熱板溶接が完了する。   In order to weld the inlet hose coupling portion 14 to the opening 12 of the fuel tank 10 with a hot plate, first, as shown in FIG. 2A, the welding portion 12A of the opening 12 of the fuel tank 10 and the inlet hose coupling portion. 14 welding portions 28 are set in a state where they are positioned on both the upper and lower sides of the hot plate 22. Subsequently, the welded portion 12A of the opening 12 of the fuel tank 10 and the welded portion 28 of the inlet hose coupling portion 14 are pressed against the hot plate 22, respectively, and both the welded portions 12A and 28 are melted. Next, after removing the hot plate 22, the welded portions 12A and 28 of the molten fuel tank 10 and the inlet hose coupling portion 14 are pressed against each other with a predetermined pushing force. Thereby, both welding parts 12A and 28 adhere closely and are integrated. Thereafter, when the welded portions 12A and 28 are cured, the hot plate welding between the opening 12 of the fuel tank 10 and the inlet hose coupling portion 14 is completed.

ここで、本実施形態では、フューエルタンク１０における開口部１２の溶着部１２Ａの周囲にタンク側突起部１６を一体に設けると共に、インレットホース結合部１４における溶着部２８の周囲でかつタンク側突起部１６と周方向にラップしない位置にホース側突起部３０を一体に設けたので、以下の如くして、溶着部１２Ａ、２８の溶接品質を判定するすることができる。   Here, in the present embodiment, the tank side protrusion 16 is integrally provided around the welded portion 12A of the opening 12 in the fuel tank 10, and the tank side protruding portion around the welded portion 28 in the inlet hose coupling portion 14 is provided. Since the hose-side protrusion 30 is integrally provided at a position that does not wrap around 16 in the circumferential direction, the welding quality of the welded portions 12A and 28 can be determined as follows.

まず、タンク側突起部１６の第１突起部１８及びホース側突起部３０の第１突起部３２の突出高さｈ１、ｈ３は初期溶融代２４（図２（Ａ）参照）に対応して設けられているため、熱板２２での加熱溶融時に第１突起部１８、３２は必ず溶融していなればならない。これが第１条件となる。従って、仮にこの第１突起部１８、３２が溶融していない場合には、「加熱溶融時に溶着部の加熱不足が生じた」と判定することができる。   First, the projecting heights h1 and h3 of the first projecting portion 18 of the tank side projecting portion 16 and the first projecting portion 32 of the hose side projecting portion 30 are provided corresponding to the initial melting allowance 24 (see FIG. 2A). Therefore, the first protrusions 18 and 32 must be melted when heated and melted by the hot plate 22. This is the first condition. Therefore, if the first protrusions 18 and 32 are not melted, it can be determined that “the heating of the welded portion has been insufficient during heating and melting”.

次に、第１突起部１８、３２と同一方向へ突出されかつ第１突起部１８、３２よりも突出高さが低く設定された第２突起部２０、３４は残存溶融代に対応して設けられているため、熱板２２での加熱溶融時に第２突起部２０、３４は溶融してはならない。これが第２条件となる。従って、仮にこの第２突起部２０、３４が溶融している場合には、「熱板での加熱溶融時に溶着部を加熱し過ぎた」か又は「加熱時の押し込み力が強過ぎた」と判定することができる。   Next, the second protrusions 20 and 34 protruding in the same direction as the first protrusions 18 and 32 and having a protrusion height lower than that of the first protrusions 18 and 32 are provided corresponding to the remaining melting allowance. Therefore, the second protrusions 20 and 34 should not be melted when the hot plate 22 is heated and melted. This is the second condition. Therefore, if the second protrusions 20 and 34 are melted, it means that “the welded part has been heated too much at the time of heating and melting on the hot plate” or “the pushing force at the time of heating was too strong”. Can be determined.

さらに、溶着後に、タンク側突起部１６の溶融後の第１突起部１８の端面１８Ａと、ホース側突起部３０の溶融後の第１突起部３２の端面３２Ａとの距離（ギャップ）Ｅ（図２（Ｂ）参照）を目視又はゲージ等の測定器具を使って測定し、当該測定値が予め設定した目標管理値（許容管理値）に入っているかどうかを確認する。確認した結果、実測値が目標管理値以内にあれば、「溶着時の押し込み量は適正であった」と判定することができる。逆に、実測値が目標管理値以内になければ、「溶着時の押し込み力が不足していた」か又は「溶着時の押し込み力が強過ぎた」と判定することができる。   Further, after welding, the distance (gap) E between the end face 18A of the first protrusion 18 after melting of the tank-side protrusion 16 and the end face 32A of the first protrusion 32 after melting of the hose-side protrusion 30 (FIG. 2 (B)) is measured visually or using a measuring instrument such as a gauge, and it is confirmed whether or not the measured value falls within a preset target management value (allowable management value). As a result of the confirmation, if the actual measurement value is within the target management value, it can be determined that “the amount of pushing during welding was appropriate”. Conversely, if the measured value is not within the target management value, it can be determined that “the pushing force at the time of welding was insufficient” or “the pushing force at the time of welding was too strong”.

上記より、本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造によれば、熱板溶接時の良否を判定する際の重要なファクターである初期溶融代、残存溶融代、及び押し込み量のすべてを簡便な方法で確実に確認することができる。その結果、本実施形態によれば、破壊検査等の大掛かりな検査をしなくても、初期溶融代、残存溶融代、及び押し込み量の管理を適切かつ確実に行うことができ、ひいては熱板溶接品質を低コストで向上させることができる。   From the above, according to the hot plate welding structure between the resin tank and the resin component according to the present embodiment, the initial melting allowance, the residual melting allowance, and the indentation amount, which are important factors when determining the quality during hot plate welding. All of these can be reliably confirmed by a simple method. As a result, according to the present embodiment, the initial melting allowance, the remaining melting allowance, and the indentation amount can be managed appropriately and reliably without performing a large-scale inspection such as a destructive inspection. Quality can be improved at low cost.

また、本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造では、第１突起部１８、３２は溶着部１２Ａ、２８の外縁に対して離間して配置されており、当該第１突起部１８、３２と溶着部１２Ａ、２８の外縁との間には所定幅の溝２６、３６が形成されているため、溶着時の溶着バリ・溶着ビードを当該溝２６、３６へ逃がすことができる。このため、初期溶融代を規定する第１突起部１８、３２の機能が阻害されるのを防止することができる。つまり、仮に溝２６、３６を設定せず、第１突起部１８、３２を溶着部１２Ａ、２８に隣接して設けた場合、熱板２２での加熱溶融時に溶着部１２Ａ、２８に生じる溶着バリ・溶着ビードが第１突起部１８、３２にそのまま雪崩れ込み、第１突起部１８、３２を溶かして初期溶融代が判別できなくなる可能性がある。しかし、本実施形態のように溝２６を設けておけば、溶着部１２Ａ、２８の溶着バリ・溶着ビードによって第１突起部１８、３２に悪影響が及ぶのを未然に防止することができる。その結果、本実施形態によれば、溶着部１２Ａ、２８の溶着品質の判定に対する信頼性を向上させることができる。   Further, in the hot plate welding structure of the resin tank and the resin component according to the present embodiment, the first protrusions 18 and 32 are arranged apart from the outer edges of the welded parts 12A and 28, and the first protrusions Since grooves 26 and 36 having a predetermined width are formed between the portions 18 and 32 and the outer edges of the welded portions 12A and 28, the welding burrs and weld beads at the time of welding can be released to the grooves 26 and 36. . For this reason, it can prevent that the function of the 1st projection parts 18 and 32 which prescribe | regulate an initial stage allowance is inhibited. That is, if the grooves 26 and 36 are not set and the first protrusions 18 and 32 are provided adjacent to the welded portions 12A and 28, the weld burrs generated in the welded portions 12A and 28 when heated and melted by the hot plate 22 are provided. There is a possibility that the weld bead collapses into the first protrusions 18 and 32 as it is, and the first protrusions 18 and 32 are melted so that the initial melting allowance cannot be determined. However, if the groove 26 is provided as in the present embodiment, it is possible to prevent the first protrusions 18 and 32 from being adversely affected by the welding burrs / welding beads of the welding parts 12A and 28. As a result, according to the present embodiment, the reliability with respect to the determination of the welding quality of the welded portions 12A and 28 can be improved.

さらに、本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造では、タンク側突起部１６はフューエルタンク１０の成形と同時に一体成形され、又ホース側突起部３０はインレットホース結合部１４の成形と同時に一体成形される構成であるため、溶着品質を判定をするための意図的な識別部（例えば、スリット）を樹脂タンク及び樹脂部品の樹脂成形後の後加工によって別途設定する構造に比し、判定誤差が生じ難いというメリットがある。つまり、後加工によって樹脂タンク及び樹脂部品に別途識別部を設けるとなると、樹脂タンク及び樹脂部品の製造誤差に加えて後加工時の加工誤差が加わるので、判定誤差が大きくなる。これに対し、本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造では、フューエルタンク１０及びインレットホース結合部１４の成形と同時にタンク側突起部１６及びホース側突起部３０が形成されるため、その分、判定誤差が生じ難くなる。その他にも、工程数が減少するので、製造ラインの短縮化を図ることができ、コスト削減を図ることができるというメリットもある。   Further, in the hot plate welding structure of the resin tank and the resin component according to the present embodiment, the tank side protrusion 16 is integrally formed simultaneously with the formation of the fuel tank 10, and the hose side protrusion 30 is the inlet hose coupling portion 14. Compared to a structure in which the intentional identification part (for example, slit) for judging the welding quality is set separately by post-processing after resin molding of the resin tank and resin parts because it is a structure that is integrally molded simultaneously with molding. However, there is an advantage that a determination error hardly occurs. That is, if a separate identification portion is provided in the resin tank and the resin part by post-processing, a processing error at the time of post-processing is added in addition to a manufacturing error of the resin tank and the resin part, so that a determination error increases. In contrast, in the hot plate welding structure of the resin tank and the resin component according to the present embodiment, the tank side protrusion 16 and the hose side protrusion 30 are formed simultaneously with the formation of the fuel tank 10 and the inlet hose coupling portion 14. Therefore, a determination error is less likely to occur. In addition, since the number of processes is reduced, the production line can be shortened, and the cost can be reduced.

次に、幾つかのバリエーションについて説明する。   Next, some variations will be described.

図３（Ａ）に示される変形例では、タンク側溶着品質判定手段としてのタンク側突起部４０を構成する第１突起部４２の上端面に、円錐形状の第１識別部としての第１小突起４４を設けると共に、第２突起部４６の上端面に円錐形状の第２識別部としての第２小突起４８を設けた点に特徴があある。   In the modification shown in FIG. 3 (A), the first small portion as the first discriminating portion having the conical shape is formed on the upper end surface of the first protruding portion 42 constituting the tank side protruding portion 40 as the tank side welding quality determining means. The projection 44 is provided, and the second small projection 48 as a conical second identification portion is provided on the upper end surface of the second projection 46.

上記構成によれば、熱板２２での加熱溶融時に第１小突起４４が溶融して消失していれば、第１突起部４２は熱板２２での加熱溶融によって溶融したことが簡単に判る（即ち、視認して簡単に判別できる）。また、溶着後に第２小突起４８が溶けているか否かを視認すれば、加熱し過ぎであったか否かが簡単に判る。よって、前述した第１条件及び第２条件の適否を簡単に判断することができる。   According to the above configuration, if the first small protrusions 44 are melted and disappear when the hot plate 22 is heated and melted, it can be easily understood that the first protruding portions 42 are melted by the heat and melt of the hot plate 22. (In other words, it can be easily identified by visual recognition). Further, if it is visually confirmed whether or not the second small protrusions 48 are melted after welding, it can be easily determined whether or not the heating has been excessive. Therefore, it is possible to easily determine whether the first condition and the second condition described above are appropriate.

図３（Ｂ）に示される変形例では、タンク側溶着品質判定手段としてのタンク側突起部５０を構成する第１突起部５２と第２突起部５４とを開口部１２の径方向に並べた点に特徴がある。   In the modification shown in FIG. 3B, the first protrusion 52 and the second protrusion 54 constituting the tank-side protrusion 50 as the tank-side welding quality determination means are arranged in the radial direction of the opening 12. There is a feature in the point.

図３（Ｃ）に示される変形例では、タンク側溶着品質判定手段としてのタンク側突起部５６を構成する第１突起部５８と第２突起部６０とをそれぞれ円柱形状に形成し、分離して開口部１２の周方向に近接して配置した点に特徴がある。   In the modification shown in FIG. 3C, the first protrusion 58 and the second protrusion 60 constituting the tank-side protrusion 56 as the tank-side welding quality determination means are respectively formed in a cylindrical shape and separated. Thus, it is characterized by being arranged close to the circumferential direction of the opening 12.

図３（Ｄ）に示される変形例では、タンク側溶着品質判定手段としてのタンク側突起部６２を構成する第１突起部６４と第２突起部６６とを開口部１２の全周に均一断面形状で設けた点に特徴がある。   In the modification shown in FIG. 3D, the first protrusion 64 and the second protrusion 66 constituting the tank-side protrusion 62 as the tank-side welding quality determining means are uniformly cross-sectioned on the entire periphery of the opening 12. There is a feature in the point provided by the shape.

（実施形態の補足説明）
なお、上述した本実施形態では、フューエルタンク１０をブロー成形によって製造したが、これに限らず、インジェクション成形によってフューエルタンクを製造する場合においても、本発明は適用可能である。 (Supplementary explanation of the embodiment)
In the above-described embodiment, the fuel tank 10 is manufactured by blow molding. However, the present invention is not limited to this, and the present invention can be applied to a case where a fuel tank is manufactured by injection molding.

また、上述した本実施形態では、フューエルタンク１０側及びインレットホース結合部１４側の双方に溶着品質判定手段を設ける構成を採ったが、これに限らず、いずれか一方にのみ溶着品質判定手段を設けるようにしてもよい。一般には、樹脂部品側の精度管理は容易であるため、フューエルタンク１０側だけに溶着品質判定手段を設けても十分に有効である。逆に、フューエルタンク１０側の精度保証が容易に得られるのであれば、樹脂部品側にのみ溶着品質判定手段を設けても一向に差し支えない。   Moreover, in this embodiment mentioned above, although the structure which provides a welding quality determination means in both the fuel tank 10 side and the inlet hose coupling | bond part 14 side was taken, it is not restricted to this, A welding quality determination means is provided only in either one. You may make it provide. In general, since the accuracy control on the resin component side is easy, it is sufficiently effective to provide the welding quality determination means only on the fuel tank 10 side. On the contrary, if the accuracy guarantee on the fuel tank 10 side can be easily obtained, the welding quality judgment means may be provided only on the resin component side.

さらに、上述した本実施形態では、タンク側突起部１６及びホース側突起部３０を周方向の４箇所に設定したが、工程能力との兼ね合いで１箇所又は２箇所でチェックすれば十分な場合もある。逆に５箇所以上にタンク側突起部及びホース側突起部を設定して信頼性を高めるようにしてもよい。   Furthermore, in the above-described embodiment, the tank side protrusion 16 and the hose side protrusion 30 are set at four locations in the circumferential direction, but it may be sufficient to check at one location or two locations in consideration of the process capability. is there. Conversely, tank side protrusions and hose side protrusions may be set at five or more locations to improve reliability.

また、上述した本実施形態では、フューエルタンク１０とインレットホース結合部１４とを熱板溶接する場合に対して本発明を適用したが、これに限らず、フューエルタンク１０とブリーザホースとを熱板溶接する場合に対して本発明を適用してもよい。また、樹脂タンクには、自動車の燃料タンクであるフューエルタンク１０以外にもウォッシャ装置の構成部品であるウォッシャタンク等が含まれる他、車両以外の用途で使用される樹脂タンクも含まれる。要は、樹脂タンクと樹脂部品とを熱板溶接で溶着させるものであれば、本発明は適用可能である。   Moreover, in this embodiment mentioned above, although this invention was applied with respect to the case where the fuel tank 10 and the inlet hose coupling | bond part 14 are hot plate welded, not only this but the fuel tank 10 and a breather hose are hot plate. The present invention may be applied to the case of welding. In addition to the fuel tank 10 that is a fuel tank of an automobile, the resin tank includes a washer tank that is a component of the washer device, and also includes a resin tank that is used for purposes other than vehicles. In short, the present invention is applicable as long as the resin tank and the resin component are welded by hot plate welding.

本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造を示す要部拡大斜視図である。It is a principal part expansion perspective view which shows the hot plate welding structure of the resin tank and resin component which concern on this embodiment. 本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造を用いて溶着品質の判定の仕方を説明するための説明図であり、（Ａ）は熱板での加熱溶融前の状態を示すタンク側突起部及びホース側突起部の側面図、（Ｂ）は溶着後のタンク側突起部及びホース側突起部の側面図である。It is explanatory drawing for demonstrating the method of determination of welding quality using the hot plate welding structure of the resin tank and resin component which concerns on this embodiment, (A) shows the state before the heat melting by a hot plate. The side view of a tank side protrusion part and a hose side protrusion part, (B) is a side view of the tank side protrusion part and hose side protrusion part after welding. 本実施形態に係る樹脂タンクと樹脂部品との熱板溶接構造のバリエーションを示す部分拡大斜視図である。It is a partial expansion perspective view which shows the variation of the hot plate welding structure of the resin tank and resin component which concern on this embodiment. 従来例に係る樹脂タンクと樹脂部品との熱板溶接構造を示す図１に対応する要部拡大斜視図である。It is a principal part expansion perspective view corresponding to FIG. 1 which shows the hot plate welding structure of the resin tank and resin component which concerns on a prior art example. 従来例に係る樹脂タンクと樹脂部品との熱板溶接構造を用いた場合の問題点を説明するための説明図であり、（Ａ）は熱板での加熱溶融前の状態を示すタンク側溶着部及びホース側溶着部の側面図、（Ｂ）は溶着後のタンク側溶着部及びホース側溶着部の側面図である。It is explanatory drawing for demonstrating the problem at the time of using the hot plate welding structure of the resin tank and resin component which concerns on a prior art example, (A) is the tank side welding which shows the state before the heat fusion by a hot platen The side view of a welding part and a hose side welding part, (B) is a side view of the tank side welding part and hose side welding part after welding.

符号の説明Explanation of symbols

１０ フューエルタンク（樹脂タンク）
１２Ａ 溶着部
１４ インレットホース結合部（樹脂部品）
１６ タンク側突起部（タンク側溶着品質判定手段）
１８ 第１突起部
２０ 第２突起部
２２ 熱板
２４ 初期溶融代
２６ 溝
２８ 溶着部
３０ ホース側突起部（部品側溶着品質判定手段）
３２ 第１突起部
３４ 第２突起部
３６ 溝
４０ タンク側突起部（タンク側溶着品質判定手段）
４２ 第１突起部
４４ 第１小突起（第１識別部）
４６ 第２突起部
４８ 第２小突起（第２識別部）
５０ タンク側突起部（タンク側溶着品質判定手段）
５２ 第１突起部
５４ 第２突起部
５６ タンク側突起部（タンク側溶着品質判定手段）
５８ 第１突起部
６０ 第２突起部
６２ タンク側突起部（タンク側溶着品質判定手段）
６４ 第１突起部
６６ 第２突起部 10 Fuel tank (resin tank)
12A welding part 14 inlet hose joint part (resin part)
16 Tank side protrusion (tank side welding quality judgment means)
18 First Projection 20 Second Projection 22 Heat Plate 24 Initial Melting Allowance 26 Groove 28 Welding Part 30 Hose Side Protrusion (Part Side Welding Quality Judgment Means)
32 1st protrusion 34 Second protrusion 36 Groove 40 Tank side protrusion (tank side welding quality judging means)
42 1st protrusion 44 1st small protrusion (1st identification part)
46 2nd protrusion 48 2nd small protrusion (2nd identification part)
50 Tank side protrusion (tank side welding quality judgment means)
52 1st projection part 54 2nd projection part 56 Tank side projection part (tank side welding quality judgment means)
58 1st protrusion 60 2nd protrusion 62 Tank side protrusion (tank side welding quality judging means)
64 1st protrusion 66 2nd protrusion

Claims (4)

樹脂タンクの所定位置に樹脂部品を熱板溶接するための樹脂タンクと樹脂部品との熱板溶接構造であって、
樹脂タンク及び樹脂部品の少なくとも一方に、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えた溶着品質判定手段を一体に設けた、
ことを特徴とする樹脂タンクと樹脂部品との熱板溶接構造。 A hot plate welding structure of a resin tank and a resin part for hot plate welding a resin part to a predetermined position of the resin tank,
At least one of the resin tank and the resin component is protruded in the same direction as the first protrusion, the first protrusion having a protrusion height determined corresponding to the initial melting allowance at the time of heat melting with the hot plate And a second protrusion having a protrusion height lower than that of the first protrusion and a protrusion height determined in accordance with the remaining melting allowance at the time of welding, integrally provided with a welding quality determination means,
A hot plate welded structure between a resin tank and a resin component. 樹脂タンクの所定位置に樹脂部品を熱板溶接するための樹脂タンクと樹脂部品との熱板溶接構造であって、
樹脂タンクにおける溶着部の周囲に一体に設けられ、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えたタンク側溶着品質判定手段と、
樹脂部品における溶着部の周囲に一体に設けられると共に前記タンク側溶着品質判定手段と周方向にラップしない位置に配置され、熱板での加熱溶融時の初期溶融代に対応して突出高さが定められた第１突起部と、この第１突起部と同一方向へ突出されると共に第１突起部よりも突出高さが低くかつ溶着時の残存溶融代に対応して突出高さが定められた第２突起部と、を備えた部品側溶着品質判定手段と、
を有することを特徴とする樹脂タンクと樹脂部品との熱板溶接構造。 A hot plate welding structure of a resin tank and a resin part for hot plate welding a resin part to a predetermined position of the resin tank,
A first projection provided integrally around the welded portion of the resin tank and having a projection height determined corresponding to the initial melting allowance during heating and melting with a hot plate, and in the same direction as the first projection A tank-side welding quality determination means comprising: a second protrusion that protrudes and has a protrusion height lower than that of the first protrusion and a protrusion height determined in accordance with the remaining melting allowance during welding;
Provided integrally around the welded portion of the resin part and disposed at a position that does not wrap in the circumferential direction with the tank-side weld quality judging means, and has a protruding height corresponding to the initial melting allowance at the time of heating and melting with a hot plate. The defined first protrusion, the protrusion protruding in the same direction as the first protrusion, the protrusion height is lower than the first protrusion, and the protrusion height is determined corresponding to the remaining melting allowance at the time of welding. A second-side projection part, and a component-side welding quality determination means comprising:
A hot plate welding structure between a resin tank and a resin component. 前記第１突起部は溶着部の外縁に対して離間して配置されており、当該第１突起部と溶着部の外縁との間には所定幅の溝が形成されている、
ことを特徴とする請求項１又は請求項２記載の樹脂タンクと樹脂部品との熱板溶接構造。 The first protrusion is disposed away from the outer edge of the welded portion, and a groove having a predetermined width is formed between the first protrusion and the outer edge of the welded portion.
3. A hot plate welded structure between a resin tank and a resin part according to claim 1 or 2. 前記第１突起部及び前記第２突起部は一体かつ略階段形状に形成されており、
当該第１突起部の端面には熱板での加熱溶融時に溶融して消失する第１識別部が形成されていると共に、当該第２突起部の端面には熱板での加熱溶融時には溶融しない第２識別部が形成されている、
ことを特徴とする請求項１乃至請求項３のいずれかに記載の樹脂タンクと樹脂部品との熱板溶接構造。 The first protrusion and the second protrusion are formed integrally and substantially in a step shape,
The end face of the first protrusion is formed with a first identification part that melts and disappears when heated and melted by a hot plate, and the end face of the second protrusion does not melt when heated and melted by a hot plate A second identification part is formed,
The hot plate welding structure of a resin tank and a resin part according to any one of claims 1 to 3.
JP2004067717A 2004-03-10 2004-03-10 Hot plate welding structure between resin tank and resin parts Expired - Fee Related JP4140538B2 (en)

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KR101774088B1 (en) 2014-10-31 2017-09-04 주식회사 동희산업 Plastic tank, method and system for welding palstic tank
JP2020069617A (en) * 2018-11-02 2020-05-07 トヨタ自動車株式会社 Weld bead cutting device and weld bead cutting method

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KR101774088B1 (en) 2014-10-31 2017-09-04 주식회사 동희산업 Plastic tank, method and system for welding palstic tank
JP2020069617A (en) * 2018-11-02 2020-05-07 トヨタ自動車株式会社 Weld bead cutting device and weld bead cutting method
JP7047711B2 (en) 2018-11-02 2022-04-05 トヨタ自動車株式会社 Welding bead cutting equipment

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