JP2011152741A - Electric heating repair device - Google Patents

Electric heating repair device Download PDF

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Publication number
JP2011152741A
JP2011152741A JP2010016500A JP2010016500A JP2011152741A JP 2011152741 A JP2011152741 A JP 2011152741A JP 2010016500 A JP2010016500 A JP 2010016500A JP 2010016500 A JP2010016500 A JP 2010016500A JP 2011152741 A JP2011152741 A JP 2011152741A
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repair device
electrothermal
electrode member
hole
electric heating
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JP5277186B2 (en
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Kazuaki Shinpo
和章 新保
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ASAHI GAUGE KK
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ASAHI GAUGE KK
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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
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local heating
    • B29C73/34—Apparatus or accessories not otherwise provided for for local pressing or local heating for local heating
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • 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
    • B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
    • B29C65/564—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined hidden in the joint, e.g. dowels or Z-pins
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C66/861—Hand-held tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for obtaining a flexible repair work appropriate to a shape even the shape hard to repair by an electric heating repair device in a conventional configuration wherein a hole part for mounting an electric heating pin is provided at the tip of an electrode member. <P>SOLUTION: In the electric heating repair device, the repair of a thermoplastic resin part is performed by pressing and burying the heated electric heating pin with respect to the thermoplastic resin part as an object to be repaired. The electric heating repair device includes a grip part and a pair of rod-shaped electrode members which project from the grip part and wherein the hole parts capable of inserting or extracting the electric heating pin are formed respectively, and the hole parts are formed on the respective side surfaces of the pair of electrode members. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、熱可塑性樹脂パーツを電熱ピンによって補修する電熱補修装置に関する。   The present invention relates to an electrothermal repair device for repairing a thermoplastic resin part with an electrothermal pin.

従来、補修対象物であるプラスチック等の熱可塑性樹脂パーツに対して、加熱した電熱ピンを押し当てて埋没させることにより、当該熱可塑性樹脂パーツの補修を行う電熱補修装置が知られる。   2. Description of the Related Art Conventionally, there is known an electrothermal repair device that repairs a thermoplastic resin part by pressing a heated electrical heating pin against a thermoplastic resin part such as plastic, which is an object to be repaired, and burying it.

一般に、上記従来の電熱補修装置では、グリップから突出する電極棒の先端に設けられている装着用の穴に電熱ピンを装着する。ユーザは、電極棒から当該電極棒の長手方向に延出するかたちで延びる電熱ピンを、加熱した状態で熱可塑性樹脂パーツの亀裂等の補修箇所に埋没させ、補修箇所の補修を行う。   In general, in the above-described conventional electric heat repair apparatus, an electric heat pin is mounted in a mounting hole provided at the tip of an electrode rod protruding from the grip. The user repairs the repaired portion by burying an electric heating pin extending in a shape extending from the electrode rod in the longitudinal direction of the electrode rod in a repaired portion such as a crack in the thermoplastic resin part in a heated state.

しかしながら、補修の対象となる箇所は、電極棒の長手方向に延出するかたちで延びる電熱ピンを押し込むだけで到達できる場所ばかりではなく、例えば深い溝や凹部の内壁等の補修を行う場合、電極棒が補修箇所の周囲の壁面と干渉してしまい作業が困難な場合がある。   However, the location to be repaired is not only a place that can be reached simply by pushing in the electric heating pin extending in the longitudinal direction of the electrode rod, but for example when repairing deep grooves, inner walls of recesses, etc. Work may be difficult because the bar interferes with the wall around the repair site.

本発明は上述した問題点を解決するためになされたものであり、電極部材先端に電熱ピン装着用の穴部を設ける従来の構成の電熱補修装置では補修が困難な形状でも、その形状に応じた柔軟な補修作業を実現する技術を提供することを目的とする。   The present invention has been made to solve the above-described problems, and even in a shape that is difficult to repair with an electric heating repair device having a conventional configuration in which a hole for mounting an electric heating pin is provided at the tip of an electrode member, depending on the shape. The purpose is to provide technology that realizes flexible repair work.

上記課題を解決するため、本発明の一態様は、補修対象物である熱可塑性樹脂パーツに対して、加熱した電熱ピンを押し当てて埋没させることにより、該熱可塑性樹脂パーツの補修を行う電熱補修装置であって、グリップ部と、前記グリップ部から突出し、それぞれに前記電熱ピンを挿抜可能な穴部が形成される棒状の１対の電極部材と、を備え、前記穴部は、前記一対の電極部材それぞれの側面に形成されている電熱補修装置に関する。   In order to solve the above-described problem, one aspect of the present invention is an electrothermal process for repairing a thermoplastic resin part by pressing and embedding a heated electric heating pin against a thermoplastic resin part that is an object to be repaired. A repair device, comprising: a grip portion; and a pair of rod-shaped electrode members that project from the grip portion and each have a hole portion into which the electric heating pin can be inserted and removed. It is related with the electrothermal repair apparatus currently formed in the side surface of each electrode member.

また、本発明の一態様は、前記穴部は、該穴部に挿入される前記電熱ピンの端部近傍が前記電極部材の長手方向と直交する方向と略平行になるように形成されている電熱補修装置に関する。   In one embodiment of the present invention, the hole is formed so that the vicinity of the end of the electric heating pin inserted into the hole is substantially parallel to a direction orthogonal to the longitudinal direction of the electrode member. The present invention relates to an electric heat repair device.

また、本発明の一態様は、前記グリップ部の側面に設けられ、前記電極部材に対する電力供給を行うためのスイッチ部をさらに備え、前記穴部は、前記電熱補修装置を前記電極部材が前記グリップ部から突出する方向に見たときに、前記電極部材の長手方向と略平行な方向を中心軸として、前記穴部は前記スイッチ部に対して反時計回り方向９０度の角度位置に形成されている電熱補修装置に関する。   One embodiment of the present invention further includes a switch portion provided on a side surface of the grip portion for supplying power to the electrode member, wherein the hole portion includes the electrothermal repair device, and the electrode member includes the grip portion. When viewed in a direction protruding from the portion, the hole portion is formed at an angular position of 90 degrees counterclockwise with respect to the switch portion, with a direction substantially parallel to the longitudinal direction of the electrode member as a central axis. The present invention relates to an electric heat repair device.

また、本発明の一態様は、前記電極部材の前記グリップ部によって支持されている側の基端部は、長手方向と直交する平面における断面形状が平行な二辺を有する多角形状に形成されており、前記電極部材は、前記基端部側面の平行な２平面に対する法線方向に形成された貫通孔を挿通するネジによって前記グリップ部に対してネジ留めされ、前記穴部は前記貫通孔と平行な方向に形成されている電熱補修装置に関する。   In one embodiment of the present invention, the base end portion of the electrode member that is supported by the grip portion is formed in a polygonal shape having two parallel cross-sectional shapes in a plane orthogonal to the longitudinal direction. The electrode member is screwed to the grip portion by a screw that passes through a through hole formed in a normal direction to two parallel planes of the side surface of the base end portion, and the hole portion is connected to the through hole. The present invention relates to an electrothermal repair device formed in parallel directions.

また、本発明の一態様は、前記電極部材の先端には雄ネジが形成されており、前記電極部材先端の雄ネジに螺合可能な雌ネジが内周に形成され、前記雄ネジに螺合させた状態において先端に前記電熱ピンを装着可能な円筒部材をさらに備える電熱補修装置に関する。   In one embodiment of the present invention, a male screw is formed at the tip of the electrode member, and a female screw that can be screwed into the male screw at the tip of the electrode member is formed on the inner periphery. The present invention relates to an electrothermal repair device further comprising a cylindrical member capable of mounting the electrothermal pin at the tip in the combined state.

また、本発明の一態様は、前記グリップ部の側面に設けられ、前記電極部材に対する電力供給を行うためのスイッチ部をさらに備え、前記一対の電極部材は、前記スイッチ部の押下方向と平行に配列されている電熱補修装置に関する。   One embodiment of the present invention further includes a switch portion provided on a side surface of the grip portion for supplying power to the electrode member, wherein the pair of electrode members are parallel to a pressing direction of the switch portion. The present invention relates to an array of electric heat repair devices.

また、本発明の一態様は、前記電熱補修装置は、外部電源から電力供給を受けるものであり、前記グリップ部の側面から延出する電源コードをさらに有する電熱補修装置に関する。   Moreover, one aspect of the present invention relates to an electric heat repairing apparatus, wherein the electric heat repairing apparatus receives power supply from an external power source and further includes a power cord extending from a side surface of the grip portion.

以上に詳述したように、本発明によれば、電極部材先端に電熱ピン装着用の穴部を設ける従来の構成の電熱補修装置では補修が困難な形状でも、その形状に応じた柔軟な補修作業を実現する技術を提供することができる。   As described above in detail, according to the present invention, even if it is difficult to repair with an electric heating repair device having a conventional configuration in which a hole for mounting an electric heating pin is provided at the tip of an electrode member, flexible repair according to the shape is performed. It is possible to provide a technique for realizing the work.

本発明の実施の形態による電熱補修装置１を含む電熱補修キット（ヒートリペアキット）の概略構成を示す図である。It is a figure which shows schematic structure of the electric heat repair kit (heat repair kit) containing the electric heat repair apparatus 1 by embodiment of this invention. 電熱補修装置１における電極部材１０１先端の詳細構成を示す斜視図である。It is a perspective view which shows the detailed structure of the electrode member 101 front-end | tip in the electrothermal repair apparatus 1. FIG. グリップ部１０３における電極部材１０１の基端部の支持構造を示す概念図である。3 is a conceptual diagram showing a support structure of a base end portion of an electrode member 101 in a grip portion 103. FIG. 電熱補修装置１の電極部材１０１の先端に電熱ピン９を装着する様子を示す斜視図である。It is a perspective view which shows a mode that the electrothermal pin 9 is mounted | worn at the front-end | tip of the electrode member 101 of the electrothermal repair apparatus 1. FIG. 本発明の実施の形態による電熱補修装置１を用いた補修方法について説明するための図である。It is a figure for demonstrating the repair method using the electrothermal repair apparatus 1 by embodiment of this invention. 本発明の実施の形態による電熱補修装置１を用いた補修方法について説明するための図である。It is a figure for demonstrating the repair method using the electrothermal repair apparatus 1 by embodiment of this invention. 本発明の実施の形態による電熱補修装置１を用いた補修方法について説明するための図である。It is a figure for demonstrating the repair method using the electrothermal repair apparatus 1 by embodiment of this invention. 本発明の実施の形態による電熱補修装置１を用いた補修方法について説明するための図である。It is a figure for demonstrating the repair method using the electrothermal repair apparatus 1 by embodiment of this invention. 穴部１０１ｈに電熱ピン９を装着した場合における補修作業の様子を示す図である。It is a figure which shows the mode of the repair work at the time of attaching the electrothermal pin 9 to the hole part 101h. 穴部１０１ｈに電熱ピン９を装着した場合における補修作業の様子を示す図である。It is a figure which shows the mode of the repair work at the time of attaching the electrothermal pin 9 to the hole part 101h.

以下、本発明の実施の形態について図面を参照しつつ説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明の実施の形態による電熱補修装置１を含む電熱補修キット（ヒートリペアキット）の概略構成を示す図である。図２は、電熱補修装置１における電極部材１０１先端の詳細構成を示す斜視図である。図３は、グリップ部１０３における電極部材１０１の基端部の支持構造を示す概念図である。図４は、電熱補修装置１の電極部材１０１の先端に電熱ピン９を装着する様子を示す斜視図である。   FIG. 1 is a diagram showing a schematic configuration of an electric heat repair kit (heat repair kit) including an electric heat repair device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing a detailed configuration of the tip of the electrode member 101 in the electrothermal repair device 1. FIG. 3 is a conceptual diagram showing a support structure of the base end portion of the electrode member 101 in the grip portion 103. FIG. 4 is a perspective view showing a state in which the electric heating pin 9 is attached to the tip of the electrode member 101 of the electric heat repairing apparatus 1.

本実施の形態における電熱補修装置１は、電極部材１０１に装着したニクロム線等から構成される電熱ピン９に電流を流すことで発生するジュール熱を利用して電熱ピン９を加熱する。電熱補修装置１は、補修対象物であるプラスチック等の熱可塑性樹脂パーツの亀裂発生箇所等の補修対象箇所に対して、加熱した電熱ピン９（図４を参照）を押し当てて埋没させることにより、当該補修対象箇所の補修（ブリッジ結合）を行う。   The electrothermal repair device 1 according to the present embodiment heats the electrothermal pin 9 using Joule heat generated by passing a current through the electrothermal pin 9 composed of a nichrome wire or the like attached to the electrode member 101. The electrothermal repair device 1 is configured by pressing and heating the heated electrical heating pin 9 (see FIG. 4) against a repair target part such as a cracked part of a thermoplastic resin part such as plastic that is a repair target. Then, repair (bridge connection) for the repair target part.

図１に示すように、本発明の実施の形態における電熱補修キットは、電熱補修装置１、電源コード２、コントロールボックス３および電源プラグ４を備えている。   As shown in FIG. 1, the electric heat repair kit in the embodiment of the present invention includes an electric heat repair device 1, a power cord 2, a control box 3, and a power plug 4.

電熱補修装置１は、大まかには、電極部材１０１、筒状部材１０２およびグリップ部１０３を備えている。電熱補修装置１を構成する各構成要素の詳細については後述する。   The electrothermal repair device 1 roughly includes an electrode member 101, a cylindrical member 102, and a grip portion 103. The detail of each component which comprises the electrothermal repair apparatus 1 is mentioned later.

電源コード２は、コンセントに差し込まれた電源プラグ４からコントロールボックス３を介して供給される電流を、電熱補修装置１に供給する。   The power cord 2 supplies a current supplied from the power plug 4 inserted into the outlet via the control box 3 to the electric heat repair device 1.

コントロールボックス３は、電熱補修装置１に供給される電流を制御する役割を有している。また、コントロールボックス３は、電熱補修装置１への電力供給をオン／オフするためのスイッチ３ｓを備えている。   The control box 3 has a role of controlling the current supplied to the electrothermal repair device 1. In addition, the control box 3 includes a switch 3 s for turning on / off the power supply to the electrothermal repair device 1.

続いて、本実施の形態における電熱補修装置１の詳細について説明する。   Then, the detail of the electrothermal repair apparatus 1 in this Embodiment is demonstrated.

電熱補修装置１は、１対の電極部材１０１、筒状部材１０２およびグリップ部１０３を備えている。   The electrothermal repair device 1 includes a pair of electrode members 101, a cylindrical member 102, and a grip portion 103.

１対の電極部材１０１は、グリップ部１０３の一端から突出している。電極部材１０１は、導電性の金属から形成される棒状部材で構成することができる。一対の電極部材１０１それぞれには、電熱ピン９（図４を参照）を挿抜可能な穴部１０１ｈが形成されている。   The pair of electrode members 101 protrude from one end of the grip portion 103. The electrode member 101 can be composed of a rod-shaped member formed from a conductive metal. Each of the pair of electrode members 101 is formed with a hole 101h into which the electric heating pin 9 (see FIG. 4) can be inserted and removed.

具体的に、穴部１０１ｈは、一対の電極部材１０１それぞれの側面に形成されている（図３を参照）。このように、電極部材１０１の側面に電熱ピン保持用の穴部１０１ｈを設けることにより、電極部材の先端に穴部を設ける従来の構成の電熱補修装置では補修が困難な形状でも、その形状に応じた柔軟な補修作業を実現することができる。   Specifically, the hole portion 101h is formed on each side surface of the pair of electrode members 101 (see FIG. 3). As described above, by providing the hole 101h for holding the electric heating pin on the side surface of the electrode member 101, even if it is difficult to repair the electric heating repair device having the conventional configuration in which the hole is provided at the tip of the electrode member, the shape is changed to that shape. Flexible repair work can be realized.

また、穴部１０１ｈは、当該穴部１０１ｈに挿入される電熱ピン９の端部近傍が電極部材１０１の長手方向と直交する方向と略平行（ここでは法線方向）になるように形成されている。   The hole 101h is formed so that the vicinity of the end of the electric heating pin 9 inserted into the hole 101h is substantially parallel to the direction perpendicular to the longitudinal direction of the electrode member 101 (here, the normal direction). Yes.

このように、電極部材１０１に対して電熱ピン９を直角に装着することができる構成とすることにより、電極部材の先端に設けられた穴部に電熱ピンを装着する従来の構成では補修処理を施すことが困難であった複雑な形状のパーツの補修作業の作業性を高めることができる。また、電熱ピン９が電極部材１０１外周面に対して法線方向に立つように装着することにより、埋め込み作業中に安定的に力を加えやすく、意図しない脱落や抜け等の発生を防止することができる。   In this way, by adopting a configuration in which the electric heating pin 9 can be mounted at right angles to the electrode member 101, the conventional configuration in which the electric heating pin is mounted in the hole provided at the tip of the electrode member performs repair processing. It is possible to improve the workability of repair work of parts having complicated shapes that were difficult to apply. Further, by mounting the electric heating pins 9 so as to stand in the normal direction with respect to the outer peripheral surface of the electrode member 101, it is easy to apply a force stably during the embedding operation, and prevent the occurrence of unintentional dropping or dropping out. Can do.

また、図２に示すように、電極部材１０１の先端には雄ネジ１０１ｎが形成されている。   As shown in FIG. 2, a male screw 101 n is formed at the tip of the electrode member 101.

円筒部材１０２は、電極部材１０１先端の雄ネジ１０１ｎに螺合可能な不図示の雌ネジが内周に形成され、雄ネジ１０１ｎに螺合させた状態において先端の穴部１０２ｈに電熱ピン９を挿し込んで装着可能となっている（図４を参照）。筒状部材１０２における上記雌ネジと穴部１０２ｈとは連通している。   The cylindrical member 102 has a female screw (not shown) that can be screwed into the male screw 101n at the tip of the electrode member 101 formed on the inner periphery, and the electric heating pin 9 is inserted into the hole 102h at the tip in a state of being screwed into the male screw 101n. It can be inserted and mounted (see FIG. 4). The female screw and the hole 102h in the tubular member 102 communicate with each other.

このような構成とすることにより、電極部材１０１の先端に位置する円筒部材１０２における先端の穴部に溶けた熱可塑性樹脂やゴミが詰まった場合でも、円筒部材１０２を電極部材１０１先端から取り外し、円筒部材１０２における電熱ピン挿し込み口に詰まったゴミ等を円筒部材１０２の基端部側から押し出して掃除することで、電極部材１０１の電熱ピン保持性能を維持することができる。   By adopting such a configuration, even when the thermoplastic resin or dust melted in the hole at the tip of the cylindrical member 102 located at the tip of the electrode member 101 is clogged, the cylindrical member 102 is removed from the tip of the electrode member 101, By cleaning and cleaning dust or the like clogged in the insertion hole of the cylindrical member 102 from the base end side of the cylindrical member 102, it is possible to maintain the electric pin holding performance of the electrode member 101.

グリップ部１０３は、筐体内に、電源コード２を介してコントロールボックス３側から供給される電流を電極部材１０１に流すためのスイッチ回路を収容している。当該スイッチ回路による電極部材１０１への電流供給の切り替えは、グリップ部１０３の側面に設けられるスイッチ部１０３ｓの押下操作によって行われる。   The grip portion 103 accommodates a switch circuit for allowing a current supplied from the control box 3 side via the power cord 2 to flow through the electrode member 101 in the housing. Switching of the current supply to the electrode member 101 by the switch circuit is performed by a pressing operation of a switch unit 103 s provided on the side surface of the grip unit 103.

また、一対の電極部材１０１は、スイッチ部１０３ｓの押下方向と平行に配列されている。一般にスイッチは、押下等されることにより所定の動作範囲で往復動作する関係上、当該スイッチの動作方向と平行な方向においてある程度の配置スペースを要する。そこで、本実施の形態では、電熱補修装置１全体としての薄型化を実現するために、スイッチ部１０３ｓの押下方向と電極部材１０１の配列方向とを揃えている。   The pair of electrode members 101 are arranged in parallel with the pressing direction of the switch portion 103s. In general, a switch requires a certain arrangement space in a direction parallel to the operation direction of the switch because the switch reciprocates within a predetermined operation range when pressed. Therefore, in the present embodiment, the pressing direction of the switch portion 103 s and the arrangement direction of the electrode members 101 are aligned in order to reduce the thickness of the electrothermal repair device 1 as a whole.

穴部１０１ｈは、電熱補修装置１を電極部材１０１がグリップ部１０３から突出する方向に見たときに、電極部材１０１の長手方向と略平行な方向を中心軸として、スイッチ部１０３ｓに対して反時計回り方向９０度の角度位置に形成されている（図４を参照）。   When the electrothermal repair device 1 is viewed in a direction in which the electrode member 101 protrudes from the grip portion 103, the hole portion 101 h is opposite to the switch portion 103 s with a direction substantially parallel to the longitudinal direction of the electrode member 101 as a central axis. It is formed at an angular position of 90 degrees in the clockwise direction (see FIG. 4).

通常、グリップ部１０３にスイッチ部が設けられている構成の場合、ユーザは、スイッチの視認性が良いようにスイッチが手前側に位置するようにグリップ部を保持することが多い。また、統計的にみても、ユーザには右利きの人間が多い。したがって、穴部１０１ｈを電極部材１０１に対して本実施の構成のように配置することにより、グリップ部１０３を右手で保持したユーザは、電極部材１０１に形成された穴部１０１ｈに装着された電熱ピン９を容易に目視することができ（例えば、図９を参照）、ひいては補修対象箇所における作業状態の視認性の向上に寄与することができる。   In general, in a configuration in which a switch portion is provided in the grip portion 103, a user often holds the grip portion so that the switch is positioned on the near side so that the visibility of the switch is good. Also, statistically, there are many right-handed users among users. Therefore, by disposing the hole 101h with respect to the electrode member 101 as in the present configuration, the user holding the grip 103 with the right hand can perform the electric heating mounted in the hole 101h formed in the electrode member 101. The pin 9 can be easily visually observed (see, for example, FIG. 9), and as a result, it can contribute to the improvement of the visibility of the work state at the repair target location.

電極部材１０１のグリップ部１０３によって支持されている側の基端部１０１ｂは、長手方向と直交する平面における断面形状が六角形に形成されている。ここでは、基端部１０１ｂの断面形状が六角形である例を示したが、平行な二辺を有する多角形状（平行な二側面を有する多角柱）であればよく、例えば、四角形や八角形の断面形状としてもよいことは言うまでもない。   The base end portion 101b on the side supported by the grip portion 103 of the electrode member 101 has a hexagonal cross-sectional shape in a plane orthogonal to the longitudinal direction. Here, an example in which the cross-sectional shape of the base end portion 101b is a hexagon has been shown, but it may be a polygonal shape having two parallel sides (a polygonal column having two parallel sides), for example, a quadrangle or an octagon. It goes without saying that the cross-sectional shape may be acceptable.

電極部材１０１は、基端部１０１ｂ側面の平行な２平面に対する法線方向Ｎ（図３を参照）に形成された貫通孔を挿通するネジ１０３ｂによってグリップ部１０３に対してネジ留めされ、穴部１０１ｈは基端部１０１ｂの貫通孔と平行な方向に延びる軸Ｐを中心とするように形成されている。   The electrode member 101 is screwed to the grip portion 103 by a screw 103b inserted through a through-hole formed in a normal direction N (see FIG. 3) with respect to two parallel planes of the side surface of the base end portion 101b. 101h is formed so as to be centered on an axis P extending in a direction parallel to the through hole of the base end portion 101b.

このような構成によれば、一対の電極部材それぞれに形成する穴部の向きを、基端部の側面を基準面として位置決めすることができ、位置決め精度の向上に寄与することができる。また、基端部の平行な２側面の内の一方の面をグリップ部の筐体の内面によって支持し、他方の面から当該筐体に対してネジ留めすることにより、比較的長い電極部材１０１を採用した場合でも、電極部材１０１を高い保持強度でグリップ部１０３に対して固定することができる。また、電極部材１０１をグリップ部に固定するためのネジ孔と、電極部材１０１に電熱ピンを装着するための穴部とを同じ方向からのドリル加工によって形成することができるため、加工精度が高く、加工工数の削減にも寄与することができる。   According to such a configuration, the direction of the hole formed in each of the pair of electrode members can be positioned with the side surface of the base end portion as the reference surface, which can contribute to improvement in positioning accuracy. Also, one of the two parallel side surfaces of the base end portion is supported by the inner surface of the housing of the grip portion, and is screwed to the housing from the other surface, whereby a relatively long electrode member 101 is obtained. Even when is adopted, the electrode member 101 can be fixed to the grip portion 103 with high holding strength. Further, since the screw hole for fixing the electrode member 101 to the grip portion and the hole portion for mounting the electric heating pin on the electrode member 101 can be formed by drilling from the same direction, the processing accuracy is high. It can also contribute to the reduction of processing man-hours.

また、本実施の形態では、電源コード２は、グリップ部１０３の側面から延出している。   In the present embodiment, the power cord 2 extends from the side surface of the grip portion 103.

一般に、電熱補修装置にて補修作業を行う際、電熱ピンを補修対象である熱可塑性樹脂パーツに埋没させるために電熱補修装置のグリップ部の後端を押し込む場合が多い。そこで、本実施の形態では、グリップ部１０３の後端を押しやすいように、通常グリップ部後端から延出される電源コード２を、グリップ部１０３側面から延出させることとしている。なお、グリップ部１０３から電源コード２を延出させる方向としては、ユーザが通常はスイッチ部が設けられている側の側面が上方に向くように保持することを考慮すると、例えば図４に示すように、グリップ部１０３におけるスイッチ部が設けられている側の側面とは反対側の側面側から延出させることが望ましい。   In general, when performing repair work with an electric heat repair device, the rear end of the grip portion of the electric heat repair device is often pushed in to bury the electric heat pin in the thermoplastic resin part to be repaired. Therefore, in the present embodiment, the power cord 2 that is normally extended from the rear end of the grip portion 103 is extended from the side surface of the grip portion 103 so that the rear end of the grip portion 103 can be easily pushed. The direction in which the power cord 2 is extended from the grip portion 103 is, for example, as shown in FIG. 4 considering that the user normally holds the side surface on the side where the switch portion is provided facing upward. Further, it is desirable to extend from the side surface opposite to the side surface of the grip portion 103 where the switch portion is provided.

続いて、上述した本発明の実施の形態による電熱補修装置１を用いた補修方法について説明する。   Then, the repair method using the electrothermal repair apparatus 1 by embodiment of this invention mentioned above is demonstrated.

まず、電源プラグ４をコンセントに挿し込み、コントロールボックス３のスイッチ３ｓをＯＮにする（図１を参照）。   First, the power plug 4 is inserted into an outlet, and the switch 3s of the control box 3 is turned on (see FIG. 1).

次に、図４に示すように、電熱ピン９を穴部１０１ｈもしくは穴部１０２ｈに挿し込み、装着する。   Next, as shown in FIG. 4, the electric heating pin 9 is inserted into the hole 101h or the hole 102h and attached.

続いて、スイッチ部１０３ｓを押下することにより電熱ピン９を加熱する（図５の（１）を参照）。   Subsequently, the electrothermal pin 9 is heated by pressing the switch portion 103s (see (1) in FIG. 5).

そして、スイッチ部１０３ｓを押下したままで、熱可塑性樹脂パーツの補修対象箇所に対して電熱ピン９を押し込み、電熱ピン９を補修対象箇所に埋没させる（図６の（２）を参照）。   Then, with the switch portion 103 s kept pressed, the electric heating pin 9 is pushed into the portion to be repaired of the thermoplastic resin part, and the electric heating pin 9 is buried in the portion to be repaired (see (2) in FIG. 6).

電熱ピン９を十分な深さまで埋没させたら、スイッチ部１０３ｓへの押圧を解除してオフ位置まで復帰させ（図６の（３）を参照）、そのまま３０秒〜６０秒程度、電熱ピン９が冷えるのを待ち、電熱補修装置１を引き抜く（図７を参照）。これにより、補修対象箇所付近に埋没した電熱ピン９は、熱可塑性樹脂パーツ内に残留し、亀裂等の補修対象箇所をブリッジ結合する。   When the electric heating pin 9 is buried to a sufficient depth, the pressing to the switch portion 103s is released and the electric heating pin 9 is returned to the off position (see (3) in FIG. 6). Waiting for cooling, the electric heat repair apparatus 1 is pulled out (see FIG. 7). Thereby, the electrothermal pin 9 buried in the vicinity of the repair target portion remains in the thermoplastic resin part, and bridges the repair target portion such as a crack.

そして、補修対象箇所から突き出ている電熱ピン９の端部をニッパ等によって切断する（図８を参照）。   And the edge part of the electric heating pin 9 which protrudes from the repair object location is cut | disconnected by a nipper etc. (refer FIG. 8).

図９は、電極部材１０１の穴部１０１ｈに電熱ピン９を装着して、補修対象箇所の補修を行っている様子を示す斜視図である。図１０は、電極部材１０１の穴部１０１ｈに電熱ピン９を装着して、補修対象箇所の補修を行っている様子を示す側面図である。   FIG. 9 is a perspective view showing a state where the electric heating pin 9 is attached to the hole 101h of the electrode member 101 and the repair target portion is repaired. FIG. 10 is a side view showing a state where the electric heating pin 9 is attached to the hole 101h of the electrode member 101 and the repair target portion is repaired.

図９および図１０に示すように、電極部材１０１の側面に設けた穴部１０１ｈに電熱ピン９を装着して補修作業を行うことで、深い溝や深い凹部のように、従来の電極部材先端に電熱ピンを装着する構成では電極部材が干渉してしまって補修困難な箇所でも、高い作業性を実現することができる。   As shown in FIG. 9 and FIG. 10, the tip of the conventional electrode member is made like a deep groove or a deep recess by performing repair work by attaching the electric heating pin 9 to the hole 101 h provided in the side surface of the electrode member 101. In the configuration in which the electric heating pins are mounted, high workability can be realized even in places where the electrode members interfere and are difficult to repair.

本発明は、その精神または主要な特徴から逸脱することなく、他の様々な形で実施することができる。そのため、前述の実施の形態はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。本発明の範囲は、特許請求の範囲によって示すものであって、明細書本文には、なんら拘束されない。さらに、特許請求の範囲の均等範囲に属する全ての変形、様々な改良、代替および改質は、すべて本発明の範囲内のものである。   The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the scope of claims, and is not restricted by the text of the specification. Further, all modifications, various improvements, alternatives and modifications belonging to the equivalent scope of the claims are all within the scope of the present invention.

１ 電熱補修装置、１０１ 電極部材、１０１ｈ 穴部、１０２ 筒状部材、１０２ｈ 穴部、１０３ グリップ部、２ 電源コード、３ コントロールボックス、４ 電源プラグ。   DESCRIPTION OF SYMBOLS 1 Electrothermal repair apparatus, 101 electrode member, 101h hole part, 102 cylindrical member, 102h hole part, 103 grip part, 2 power cord, 3 control box, 4 power plug.

Claims (7)

補修対象物である熱可塑性樹脂パーツに対して、加熱した電熱ピンを押し当てて埋没させることにより、該熱可塑性樹脂パーツの補修を行う電熱補修装置であって、
グリップ部と、
前記グリップ部から突出し、それぞれに前記電熱ピンを挿抜可能な穴部が形成される棒状の１対の電極部材と、を備え、
前記穴部は、前記一対の電極部材それぞれの側面に形成されている電熱補修装置。 An electric heat repair device for repairing the thermoplastic resin part by pressing and embedding the heated electric heat pin against the thermoplastic resin part to be repaired.
A grip part;
A pair of rod-shaped electrode members that protrude from the grip portion and in which holes for inserting and removing the electric heating pins are formed, respectively,
The hole portion is an electrothermal repair device formed on each side surface of the pair of electrode members. 請求項１に記載の電熱補修装置において、
前記穴部は、該穴部に挿入される前記電熱ピンの端部近傍が前記電極部材の長手方向と直交する方向と略平行になるように形成されている電熱補修装置。 In the electrothermal repair device according to claim 1,
The hole repairing device is an electric heating repair device in which an end portion of the electric heating pin inserted into the hole is formed substantially parallel to a direction orthogonal to the longitudinal direction of the electrode member. 請求項１に記載の電熱補修装置において、
前記グリップ部の側面に設けられ、前記電極部材に対する電力供給を行うためのスイッチ部をさらに備え、
前記穴部は、前記電熱補修装置を前記電極部材が前記グリップ部から突出する方向に見たときに、前記電極部材の長手方向と略平行な方向を中心軸として、前記穴部は前記スイッチ部に対して反時計回り方向９０度の角度位置に形成されている電熱補修装置。 In the electrothermal repair device according to claim 1,
Provided on a side surface of the grip portion, further comprising a switch portion for supplying power to the electrode member;
When the electrothermal repair device is viewed in a direction in which the electrode member protrudes from the grip portion, the hole portion has a direction substantially parallel to the longitudinal direction of the electrode member as a central axis, and the hole portion is the switch portion. An electrothermal repair device formed at an angular position of 90 degrees counterclockwise. 請求項１に記載の電熱補修装置において、
前記電極部材の前記グリップ部によって支持されている側の基端部は、長手方向と直交する平面における断面形状が平行な二辺を有する多角形状に形成されており、
前記電極部材は、前記基端部側面の平行な２平面に対する法線方向に形成された貫通孔を挿通するネジによって前記グリップ部に対してネジ留めされ、前記穴部は前記貫通孔と平行な方向に形成されている電熱補修装置。 In the electrothermal repair device according to claim 1,
The base end portion on the side supported by the grip portion of the electrode member is formed in a polygonal shape having two parallel cross-sectional shapes in a plane perpendicular to the longitudinal direction,
The electrode member is screwed to the grip portion by a screw that passes through a through hole formed in a normal direction to two parallel planes of the side surface of the base end portion, and the hole portion is parallel to the through hole. Electric heat repair device formed in the direction. 請求項１に記載の電熱補修装置において、
前記電極部材の先端には雄ネジが形成されており、
前記電極部材先端の雄ネジに螺合可能な雌ネジが内周に形成され、前記雄ネジに螺合させた状態において先端に前記電熱ピンを装着可能な円筒部材をさらに備える電熱補修装置。 In the electrothermal repair device according to claim 1,
A male screw is formed at the tip of the electrode member,
An electrothermal repair device further comprising a cylindrical member formed on an inner periphery of a female screw that can be screwed with a male screw at the tip of the electrode member, and capable of mounting the electric heating pin at the tip in a state of being screwed into the male screw. 請求項１に記載の電熱補修装置において、
前記グリップ部の側面に設けられ、前記電極部材に対する電力供給を行うためのスイッチ部をさらに備え、
前記一対の電極部材は、前記スイッチ部の押下方向と平行に配列されている電熱補修装置。 In the electrothermal repair device according to claim 1,
Provided on a side surface of the grip portion, further comprising a switch portion for supplying power to the electrode member;
The pair of electrode members is an electrothermal repair device in which the pair of electrode members are arranged in parallel with a pressing direction of the switch unit. 請求項１に記載の電熱補修装置において、
前記電熱補修装置は、外部電源から電力供給を受けるものであり、
前記グリップ部の側面から延出する電源コードをさらに有する電熱補修装置。

In the electrothermal repair device according to claim 1,
The electric heat repair device receives power supply from an external power source,
An electrothermal repair device further comprising a power cord extending from a side surface of the grip portion.

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