JP5835175B2 - Method for welding casing and lid, and method for manufacturing storage case - Google Patents

Method for welding casing and lid, and method for manufacturing storage case Download PDF

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JP5835175B2
JP5835175B2 JP2012212595A JP2012212595A JP5835175B2 JP 5835175 B2 JP5835175 B2 JP 5835175B2 JP 2012212595 A JP2012212595 A JP 2012212595A JP 2012212595 A JP2012212595 A JP 2012212595A JP 5835175 B2 JP5835175 B2 JP 5835175B2
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lid
cavity
welding
housing
casing
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JP2014065230A (en
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悠宰 長井
悠宰 長井
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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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission 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
    • B29C66/001—Joining in special atmospheres
    • B29C66/0012—Joining in special atmospheres characterised by the type of environment
    • B29C66/0014—Gaseous environments
    • 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
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12445—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue having the tongue on the side
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • 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
    • B29C66/70—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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • 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
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/737—Articles provided with holes, e.g. grids, sieves

Description

本発明は、開口したキャビティを有する筐体に蓋体を溶着するための筐体と蓋体の溶着方法、及び筐体と蓋体の組立体に関する。   The present invention relates to a housing and lid welding method for welding a lid to a housing having an open cavity, and a housing and lid assembly.

電子基板等を格納するキャビティを有する筐体と蓋体との組立体を溶着する方法として、筐体と蓋体を組み立てた組立体を溶着する際に、ポンプを用いてキャビティ内の空気を排出し、キャビティ内を負圧にすることで蓋体が外れないようにする方法が用いられている（特許文献１）。   As a method for welding an assembly of a housing and a lid having a cavity for storing an electronic substrate, etc., the air in the cavity is discharged using a pump when welding the assembly of the housing and the lid. And the method of keeping a cover body from removing by making the inside of a cavity into a negative pressure is used (patent document 1).

特開２０１０−５９１３号公報JP 2010-5913 A

しかしながら、筐体と蓋体を溶着する際にキャビティ内を負圧にして蓋体を抑えた状態で溶着すると、キャビティ内の圧力が外部の圧力より低いため、筐体と蓋体との境目の近辺では空気をキャビティ内へ吸い込む力が働く。そのため、溶着時に生じたフューム等の異物をキャビティ内に吸い込む場合がある。従って、筐体と蓋体を溶着した格納ケースのキャビティ内に格納された基板等に悪影響を与えるおそれがある。   However, when welding the casing and lid, if the inside of the cavity is welded with a negative pressure and the lid is held down, the pressure in the cavity is lower than the external pressure, so the boundary between the casing and the lid is In the vicinity, there is a force to suck air into the cavity. Therefore, foreign matters such as fumes generated during welding may be sucked into the cavity. Therefore, there is a possibility that the substrate stored in the cavity of the storage case in which the housing and the lid are welded may be adversely affected.

本発明は、このような問題を解決するためになされたものであり、開口したキャビティを有する筐体と蓋体を溶着する際に、キャビティ内にフューム等の異物が入り込むことを抑制可能な筐体と蓋体の溶着方法、及び筐体と蓋体の組立体を提供することが目的とする。   The present invention has been made to solve such a problem, and is capable of suppressing the entry of a foreign substance such as a fume into a cavity when welding a casing having an open cavity and a lid. It is an object of the present invention to provide a method for welding a body and a lid, and an assembly of a housing and a lid.

第１の態様では、筐体と蓋体の溶着方法が提供される。前記筐体は、開口を有するキャビティを備えるとともに、外部から前記キャビティまで通じた通気孔が設けられている。そして、前記筐体と蓋体の溶着方法は、前記筐体を前記蓋体で蓋をして組み立てる工程と、前記通気孔から前記キャビティ内に気体を供給することで前記キャビティ内の気圧を外部の気圧より高める工程と、キャビティ内の気圧を外部の気圧より高めた状態で、前記筐体と前記蓋体を溶着する工程とを含む。   In a 1st aspect, the welding method of a housing | casing and a cover body is provided. The housing includes a cavity having an opening and is provided with a vent hole that communicates from the outside to the cavity. The method of welding the casing and the lid includes the steps of assembling the casing with the lid and assembling the casing, and supplying the gas from the vent hole into the cavity to adjust the atmospheric pressure in the cavity to the outside. And a step of welding the casing and the lid in a state where the pressure in the cavity is higher than the external pressure.

さらに、前記筐体と前記蓋体を組み立てた組立体は、外部から前記キャビティまで通じる換気孔を形成してもよい。そして、前記溶着する工程は、溶着工程中に前記筐体と前記蓋体を溶着することで前記換気孔を塞ぐ工程を含んでもよい。   Furthermore, the assembly in which the casing and the lid are assembled may form a ventilation hole that communicates from the outside to the cavity. The step of welding may include a step of closing the ventilation hole by welding the casing and the lid during the welding step.

さらに、前記筐体は、前記筐体の壁部、又は底部に前記キャビティ内に収容される電子部品に電気的に接続される端子を有するコネクタを有してもよく、前記通気孔の開口は、前記コネクタに設けられることを含んでもよい。   Furthermore, the housing may include a connector having a terminal electrically connected to an electronic component housed in the cavity on a wall portion or a bottom portion of the housing, and the opening of the vent hole is And may be included in the connector.

さらに、前記筐体及び前記蓋体の互いに溶着される溶着部は、樹脂製又は金属製であってもよい。   Further, the welded portion of the casing and the lid that are welded to each other may be made of resin or metal.

第２の態様では、組立体が提供される。前記組立体は、筐体及び蓋体を含む。前記筐体は、開口を有するキャビティを備えるとともに、外部から前記キャビティまで通じた通気孔が設けられている。前記蓋体は、前記開口を塞ぐように前記筐体と溶着可能である。そして、前記筐体と前記蓋体を組み立てた際に、外部から前記キャビティまで通じる換気孔を形成するものである。   In a second aspect, an assembly is provided. The assembly includes a housing and a lid. The housing includes a cavity having an opening and is provided with a vent hole that communicates from the outside to the cavity. The lid body can be welded to the housing so as to close the opening. And when the said housing | casing and the said cover body are assembled, the ventilation hole which leads to the said cavity from the outside is formed.

さらに、前記通気孔は、前記筐体と前記蓋体が溶着される際に塞がれてもよい。   Furthermore, the vent hole may be closed when the casing and the lid are welded.

上述した態様によれば、開口したキャビティを有する筐体に蓋体を溶着する際にキャビティ内に異物が入り込むことを抑制可能な筐体と蓋体の溶着方法、及び筐体と蓋体の組立体を提供できる。   According to the above-described aspect, the method of welding the housing and the lid body that can prevent foreign matter from entering the cavity when the lid body is welded to the housing having the opened cavity, and the combination of the housing and the lid body 3D can be provided.

組立体を溶着する際の縦断面概略図Schematic diagram of longitudinal section when welding assembly 組立体の側面概略図Side schematic view of assembly 組立体を組み立てる縦断面概略図Schematic diagram of longitudinal section for assembling the assembly 組立体を載置台に固定する縦断面概略図Schematic diagram of vertical cross section for fixing assembly to mounting table 蓋体を筐体に押さえつけ、キャビティ内に気体を供給する縦断面概略図Schematic diagram of a longitudinal section that presses the lid against the housing and supplies gas into the cavity 筐体と蓋体を溶着する斜視概略図Schematic perspective view of welding case and lid

以下では、本発明を適用した具体的な実施の形態について、図面を参照しながら詳細に説明する。各図面において、同一又は対応する要素には同一の符号が付されており、説明の明確化のため、必要に応じて重複説明は省略される。   Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. In each drawing, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted as necessary for clarification of the description.

添付した図面は一実施の形態に係る筐体と蓋体の溶着方法、及び筐体と蓋体の組立体の具体例を説明するものであり、図１は、第１の実施の形態に係る組立体を溶着する際の縦断面概略図、図２は、第２の実施の形態に係る溶着前の組立体の具体例を示す側面概略図である。   The attached drawings are for explaining a specific example of a housing and lid welding method and a housing and lid assembly according to one embodiment, and FIG. 1 relates to the first embodiment. FIG. 2 is a schematic side view showing a specific example of the assembly before welding according to the second embodiment.

＜第１の実施の形態＞
以下、樹脂製の筐体１０と蓋体２０とをレーザ溶着する例を、図面を用いて説明する。図１に示すように筐体１０は、開口を有するキャビティ１１を備えるとともに、筐体の底部に外部からキャビティ１１まで通じた通気孔１２が設けられている。そして、筐体１０は、キャビティ１１内にセンサや電子回路等の電子部品が格納されており、治具１１０を用いて載置台１００の上に固定され、筐体１０の開口部が蓋体２０で蓋をされ、組立体を構成している。 <First Embodiment>
Hereinafter, an example of laser welding the resin casing 10 and the lid 20 will be described with reference to the drawings. As shown in FIG. 1, the housing 10 includes a cavity 11 having an opening, and a ventilation hole 12 communicating from the outside to the cavity 11 is provided at the bottom of the housing. The casing 10 stores electronic components such as sensors and electronic circuits in the cavity 11, and is fixed on the mounting table 100 using a jig 110, and the opening of the casing 10 is a lid 20. The lid is covered with, and the assembly is constituted.

そして、筐体１０の開口側とは反対側、即ち、キャビティ１１の底部となる側には、筐体１０と一体にされているコネクタ１３が外側に向かって突出成形されている。コネクタ１３は、キャビティ１１内に収容される電子部品に電気的に接続される端子を有する。コネクタ１３は、筐体１０から筒状に突出しており、キャビティ１１内に繋がる通気孔１２と、筒状内部にはコネクタ１３用の端子（図示しない）とを有している。コネクタ１３用の端子については規格化がされているので、コネクタ１３は、規模が同等の組立体であれば、殆ど同じ形状・構造に形成されている。   On the side opposite to the opening side of the housing 10, that is, on the side serving as the bottom of the cavity 11, a connector 13 integrated with the housing 10 is formed so as to protrude outward. The connector 13 has a terminal that is electrically connected to an electronic component housed in the cavity 11. The connector 13 protrudes from the housing 10 in a cylindrical shape, and has a vent hole 12 connected to the cavity 11 and a terminal (not shown) for the connector 13 inside the cylindrical shape. Since the terminals for the connector 13 are standardized, the connector 13 is formed in almost the same shape and structure as long as it is an assembly of the same scale.

図１に示された溶着機構５０は、開口に合わせて配置された蓋体２０と筐体１０を溶着する。図１の例では、溶着機構５０は、レーザ溶着のためのレーザ光を照射するレーザヘッドを含む。気体供給機構６０は、溶着機構５０によって筐体１０と蓋体２０が溶着される際に、通気孔１２からキャビティ１１内に気体を供給する。   The welding mechanism 50 shown in FIG. 1 welds the lid 20 and the housing 10 that are arranged in accordance with the opening. In the example of FIG. 1, the welding mechanism 50 includes a laser head that irradiates laser light for laser welding. The gas supply mechanism 60 supplies gas into the cavity 11 from the vent hole 12 when the casing 10 and the lid 20 are welded by the welding mechanism 50.

筐体１０の少なくとも蓋体２０との溶着部分は、レーザヘッドから照射される所定波長のレーザ光Ｌに対して吸収特性を有する熱可塑性樹脂によって形成されており、蓋体２０はレーザ光Ｌに対して透過特性を有する樹脂によって形成されている。熱可塑性樹脂は、例えば、ＰＰ（ポリプロピレン）、ＰＣ（ポリカーボネイト）、ＡＢＳ（アクリロニトリル・ブタジエン・スチレンポリマ）、ＰＢＴ（ポリブチレンテレフタレート）、又はＰＰＳ（ポリフェニレンサルファイド）等である。またこれらの熱可塑性樹脂は、レーザ光吸収特性を付加するために、顔料（例えばカーボンブラック）又は染料が添加されてもよい。   At least a welded portion of the housing 10 with the lid 20 is formed of a thermoplastic resin having absorption characteristics with respect to the laser light L having a predetermined wavelength irradiated from the laser head. On the other hand, it is formed of a resin having transmission characteristics. Examples of the thermoplastic resin include PP (polypropylene), PC (polycarbonate), ABS (acrylonitrile butadiene styrene polymer), PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), and the like. In addition, these thermoplastic resins may be added with a pigment (for example, carbon black) or a dye in order to add laser light absorption characteristics.

コネクタ１３の先端には、シール材が設けられている。図１の例では、シール材としてのシリコンラバー３０がコネクタ１３の先端に装着されている。シリコンラバー３０は、コネクタ１３に取り付けられた状態では、コネクタ１３の先端部分にシリコンラバー３０の面が密着状態で当接する形状に形成されている。また、シリコンラバー３０の中央には、通気孔１２に連通する気体供給路３１が形成されている。   A seal material is provided at the tip of the connector 13. In the example of FIG. 1, a silicon rubber 30 as a sealing material is attached to the tip of the connector 13. When the silicon rubber 30 is attached to the connector 13, the silicon rubber 30 is formed in a shape in which the surface of the silicon rubber 30 comes into contact with the tip portion of the connector 13 in a close contact state. A gas supply path 31 communicating with the vent hole 12 is formed at the center of the silicon rubber 30.

上記の気体供給路３１は、配管６１を有する気体供給機構６０（例えば、ポンプ）が接続されている。気体供給機構６０は、配管６１、気体供給路３１、及び通気孔１２を通じてキャビティ１１の内部に気体を供給することができる。また、配管６１には、配管６１内の圧力を検出するための圧力センサ（プレッシャゲージ）と配管６１を閉鎖可能なバルブとが設けられてもよい。圧力センサはバルブよりキャビティ１１内側に設けられており、バルブを閉じた後で、キャビティ１１内側の圧力低下の有無をチェックすることができる。   The gas supply path 31 is connected to a gas supply mechanism 60 (for example, a pump) having a pipe 61. The gas supply mechanism 60 can supply gas into the cavity 11 through the pipe 61, the gas supply path 31, and the vent hole 12. The pipe 61 may be provided with a pressure sensor (pressure gauge) for detecting the pressure in the pipe 61 and a valve capable of closing the pipe 61. The pressure sensor is provided inside the cavity 11 from the valve, and after the valve is closed, the presence or absence of a pressure drop inside the cavity 11 can be checked.

ここで、この筐体と蓋体の溶着方法について説明する。まず、キャビティ１１内に電子部品を格納し、図３に示すように、筐体１０の開口部と蓋体２０の周縁部とが有する互いに嵌まり合う凹凸嵌合構造に合わせて筐体１０と蓋体２０とを組み立てる。   Here, the welding method of this housing | casing and a cover body is demonstrated. First, an electronic component is stored in the cavity 11, and as shown in FIG. 3, the housing 10 and the housing 10 are fitted to the fitting-concave fitting structure that the opening of the housing 10 and the peripheral edge of the lid 20 have. Assemble the lid 20.

次に、筐体１０と一体となって筐体１０の下部に設けられているコネクタ１３にシリコンラバー３０を密着させ、かつ、通気孔１２と気体供給路３１を連通させるように取り付ける。そして、治具１１０を用いて載置台１００の上に筐体１０を固定し、気体供給機構６０を有する配管６１を、通気孔１２とは反対側の気体供給路３１の端に取り付ける。   Next, it attaches so that the silicone rubber 30 may be closely_contact | adhered to the connector 13 provided in the lower part of the housing | casing 10 integrally with the housing | casing 10, and the ventilation hole 12 and the gas supply path 31 may be connected. And the housing | casing 10 is fixed on the mounting base 100 using the jig | tool 110, and the piping 61 which has the gas supply mechanism 60 is attached to the end of the gas supply path 31 on the opposite side to the vent hole 12. FIG.

その後、図４に示すように、クランプ機構４０を用いて蓋体２０を筐体１０に押さえつけて固定する。次に、図５に示すように、気体供給機構６０からキャビティ１１内に気体を供給してキャビティ１１内の圧力を高めた状態する。そして、図６に示すように、レーザ光Ｌを照射して筐体１０と蓋体２０とを溶着する。蓋体２０の周縁部を透過したレーザ光Ｌは側壁端部側の接触面を加熱して当該側壁端部を溶融し、固化する際に開口部の側壁端部と蓋体２０の周縁部とが溶着される。レーザヘッドが、レーザ光Ｌを照射しつつ蓋体２０の周縁部に沿って蓋体２０の上方を一巡することで、筐体１０と蓋体２０とを開口部の全周に渡って溶着し、格納ケースを得ることが出来る。   Thereafter, as shown in FIG. 4, the lid 20 is pressed against the housing 10 and fixed using the clamp mechanism 40. Next, as shown in FIG. 5, the gas is supplied from the gas supply mechanism 60 into the cavity 11 to increase the pressure in the cavity 11. And as shown in FIG. 6, the laser beam L is irradiated and the housing | casing 10 and the cover body 20 are welded. The laser beam L transmitted through the peripheral edge of the lid 20 heats the contact surface on the side wall end, melts the side wall end, and solidifies the side wall end of the opening and the peripheral edge of the lid 20. Is welded. The laser head makes a round over the lid 20 along the peripheral edge of the lid 20 while irradiating the laser beam L, so that the casing 10 and the lid 20 are welded over the entire circumference of the opening. A storage case can be obtained.

以上に説明したように、本実施の形態では、キャビティ１１内の気圧を高めた状態で筐体１０と蓋体２０とを溶着する。これにより、気圧の低い外部から気圧の高いキャビティ１１内への気体の流入を制限できる。したがって本実施形態は、溶着時に生じたフューム等の異物がキャビティ１１内へ入り込むことを防ぐことができる。これにより、溶着時にキャビティ１１内に生じたフューム等の異物をキャビティ１１外に効果的に排出することができ、溶着に伴う異物がキャビティ１１内に残留することを抑制できる。なお、溶着前の筐体１０と蓋体２０の隙間を通してキャビティ１１内から外部へ排気するための効果的な変形例については後に説明する第２の実施の形態において詳細に説明される。   As described above, in the present embodiment, the housing 10 and the lid 20 are welded in a state where the air pressure in the cavity 11 is increased. Thereby, inflow of the gas from the outside with a low atmospheric pressure into the cavity 11 with a high atmospheric pressure can be restricted. Therefore, this embodiment can prevent foreign matters, such as a fume generated at the time of welding, from entering the cavity 11. Thereby, foreign matters such as fumes generated in the cavity 11 at the time of welding can be effectively discharged out of the cavity 11, and foreign matter accompanying welding can be prevented from remaining in the cavity 11. Note that an effective modification for exhausting from the cavity 11 to the outside through the gap between the casing 10 and the lid 20 before welding will be described in detail in a second embodiment described later.

＜第２の実施の形態＞
本実施形態では、第１の実施の形態の変形例について説明する。本実施の形態における組立体（筐体１０および蓋体２０）の材料、並びに筐体と蓋体の溶着方法は、発明の第１の実施の形態と同様であるが、組立体は、以下のように構成される。すなわち、図２に示すように、筐体１０は、蓋体２０と当接する部位に開口に合わせて蓋体２０に蓋をされた際に外部からキャビティ１１まで通じる換気孔を形成する通気孔１４が設けられている。なお、この換気孔（通気孔１４）は、レーザ溶着等によって筐体１０と蓋体２０と溶着することによって塞がれ、筐体１０と蓋体２０は隙間なく溶着される。言い換えると、本実施の形態にかかる筐体と蓋体の溶着方法は、筐体１０と蓋体２０を溶着することで換気孔（通気孔１４）を塞ぐことを含む。 <Second Embodiment>
In the present embodiment, a modification of the first embodiment will be described. The material of the assembly (housing 10 and lid 20) and the method for welding the housing and the lid in the present embodiment are the same as those in the first embodiment of the invention. Configured as follows. That is, as shown in FIG. 2, the casing 10 has a ventilation hole 14 that forms a ventilation hole that leads from the outside to the cavity 11 when the lid 20 is covered with the opening at a portion that contacts the lid 20. Is provided. The ventilation hole (vent hole 14) is closed by welding the casing 10 and the lid 20 by laser welding or the like, and the casing 10 and the lid 20 are welded without a gap. In other words, the housing and lid welding method according to the present embodiment includes closing the ventilation hole (ventilation hole 14) by welding the housing 10 and the lid 20.

本実施形態で説明した組立体の構造および筐体と蓋体の溶着方法によれば、筐体１０と蓋体２０を溶着している途中は筐体１０と蓋体２０との間に換気孔（通気孔１４）が存在する。そのため、キャビティ１１内から外部へ向かう気体の流れが生じやすく、フューム等の侵入をより確実に防ぐことができ、かつ、キャビティ１１内で発生したヒュームを筐体１０外部へより確実に排出することができる。また、筐体１０と蓋体２０を溶着して得た格納ケースでは換気孔（通気孔１４）が塞がれ、隙間なく筐体１０と蓋体２０とが溶着されている。従って、本実施形態は、キャビティ１１内に異物が残留することを一層効果的に抑制することができる筐体と蓋体の溶着方法、及び筐体と蓋体の組立体を提供できる。   According to the structure of the assembly and the method of welding the casing and the lid described in the present embodiment, a ventilation hole is provided between the casing 10 and the lid 20 while the casing 10 and the lid 20 are being welded. (Vent hole 14) exists. Therefore, a gas flow from the inside of the cavity 11 to the outside is likely to occur, the intrusion of fumes and the like can be prevented more reliably, and the fumes generated in the cavity 11 can be more reliably discharged to the outside of the housing 10. Can do. In the storage case obtained by welding the casing 10 and the lid 20, the ventilation hole (ventilation hole 14) is closed, and the casing 10 and the lid 20 are welded without a gap. Therefore, this embodiment can provide a housing and lid welding method and a housing and lid assembly that can more effectively suppress foreign matter from remaining in the cavity 11.

また、第２の実施の形態において、筐体10が溝を有している例を示しているが、蓋体２０の溶着される部位、または筐体１０と蓋体２０の両方の溶着される部位に、外部からキャビティまで通じる溝が設けられていても良い。   Moreover, in 2nd Embodiment, although the housing | casing 10 has shown the example which has a groove | channel, the site | part to which the cover body 20 is welded, or both the housing | casing 10 and the cover body 20 are welded. A groove that communicates from the outside to the cavity may be provided in the site.

＜他の実施の形態＞
第１の実施の形態、及び第２の実施の形態は、樹脂製の蓋体２０を同じく樹脂製の筐体１０にクランプ機構４０で抑えてレーザ溶着する筐体と蓋体の溶着方法、及び筐体と蓋体の組立体についての例を示す図であるが、本発明はこれに限定されるものではない。すなわち、本発明は、溶着時にフュームが発生する筐体と蓋体の溶着方法、及び筐体と蓋体の組立体に好適に適用できる。本発明の他の実施の形態は、例えば金属製の筐体と蓋体とを筐体と蓋体の溶着方法、及び筐体と蓋体の組立体に適用されてもよい。また、筐体と蓋体は異種材料、例えば一方が金属製であり他方が樹脂製であってもよい。また、筐体は、異種材料を結合して構成されてもよい。例えば、蓋体と溶着される部位は樹脂製であり、その他は金属製であってもよい。同様に、蓋体も、異種材料を結合して構成されてもよい。また、本本実施の形態は、レーザ溶着とは異なる溶着技術、例えば筐体と蓋体とを溶着する際にフュームが発生するおそれがある熱溶着などの筐体と蓋体の溶着方法、及び筐体と蓋体の組立体に適用されてもよい。 <Other embodiments>
In the first embodiment and the second embodiment, a method of welding a housing and a lid, in which the resin lid 20 is held on the resin housing 10 by the clamp mechanism 40 and laser welding is performed, and Although it is a figure which shows the example about the assembly of a housing | casing and a cover body, this invention is not limited to this. That is, the present invention can be suitably applied to a housing and lid welding method in which fumes are generated during welding and a housing and lid assembly. Other embodiments of the present invention may be applied to, for example, a method of welding a housing and a lid made of metal to a housing and a lid, and an assembly of the housing and the lid. Further, the housing and the lid may be made of different materials, for example, one is made of metal and the other is made of resin. The housing may be configured by combining different materials. For example, the part welded to the lid may be made of resin, and the others may be made of metal. Similarly, the lid may be configured by combining different materials. In addition, the present embodiment provides a welding technique different from laser welding, for example, a method of welding a housing and a lid, such as thermal welding that may cause fumes when the housing and the lid are welded, and a housing. It may be applied to an assembly of a body and a lid.

また、蓋体を固定する機構は、第１の実施の形態に示されたクランプ機構４０に限られない。蓋体２０を固定する機構は、例えば、筐体１０に対する蓋体２０の配置を固定することができればよい。また、レーザ溶着の場合には、蓋体２０を固定する機構は、レーザ光Lによって影響を受けづらいものであればよい。例としては、蓋体２０を固定する機構は、レーザ光Lの波長域において大きな透過率を有するガラス板を用いて蓋体２０全体を筐体に対して押圧するものであってもよい。また、蓋体２０を固定する機構は、筐体１０及び蓋体２０の少なくとも一方に設けられたツメ（係止片）であってもよい。例えば、筐体１０及び蓋体２０は、互いに係合するツメを有しており、クランプ機構を用いずに蓋体を筐体に固定できるようにされてもよい。   Further, the mechanism for fixing the lid is not limited to the clamp mechanism 40 shown in the first embodiment. The mechanism for fixing the lid 20 only needs to be able to fix the arrangement of the lid 20 with respect to the housing 10, for example. In the case of laser welding, the mechanism for fixing the lid 20 may be any mechanism that is not easily affected by the laser light L. As an example, the mechanism for fixing the lid 20 may be a mechanism that presses the entire lid 20 against the casing using a glass plate having a large transmittance in the wavelength region of the laser light L. The mechanism for fixing the lid 20 may be a claw (locking piece) provided on at least one of the housing 10 and the lid 20. For example, the housing 10 and the lid body 20 may have claws that engage with each other, and the lid body may be fixed to the housing without using a clamp mechanism.

また、筐体１０の開口部と蓋体２０の周縁部の構造は、第１の実施の形態に示された構造、すなわち、筐体１０の開口部と蓋体２０の周縁部が互いに嵌まり合う凹凸嵌合構造、に限られない。例えば、筐体１０の開口部と蓋体２０の周縁部の構造は、クランプ機構４０を用いて筐体１０に蓋体２０を押圧することができる構造であればよい。例としては、筐体１０の周縁部と蓋体２０の周縁部とが凹凸を有さない構造や、筐体１０の周縁部と蓋体２０の周縁部とが対応するテーパ形状であるテーパ構造などが挙げられる。   Moreover, the structure of the opening part of the housing | casing 10 and the peripheral part of the cover body 20 is the structure shown in 1st Embodiment, ie, the opening part of the housing | casing 10, and the peripheral part of the cover body 20 fit mutually. It is not limited to the concave and convex fitting structure that fits. For example, the structure of the opening portion of the housing 10 and the peripheral portion of the lid body 20 may be any structure that can press the lid body 20 against the housing 10 using the clamp mechanism 40. As an example, the structure in which the peripheral part of the housing 10 and the peripheral part of the lid 20 are not uneven, or the taper structure in which the peripheral part of the housing 10 and the peripheral part of the lid 20 correspond to each other. Etc.

また、レーザ溶着に関する第１の実施の形態の例では、筐体１０はレーザ光Ｌに対して吸収特性を有する熱可塑性樹脂によって形成されており、蓋体２０はレーザ光Ｌに対して透過特性を有する樹脂によって形成されている。しかしながら、本実施の形態はこれに限られるものではない。すなわち、筐体と蓋体との境目で熱が発生し、筐体と蓋体とが溶着されればよい。例としては、レーザ光Lが蓋体の下側に当たるように照射された場合には筐体が光透過特性を有する樹脂で形成され、蓋体が光吸収特性を有する熱可塑性樹脂で形成されたものが挙げられる。また、筐体及び蓋体の両方が光透過特性を有する樹脂であり、筐体と蓋体との間に光吸収特性を有する部材（例えば熱硬化性の樹脂接着剤）が配置されたもの、または、筐体及び蓋体の光吸収特性光と透過特性のバランスが調整されたものも挙げられる。   Further, in the example of the first embodiment relating to laser welding, the casing 10 is formed of a thermoplastic resin having absorption characteristics with respect to the laser light L, and the lid 20 is transmissive with respect to the laser light L. It is formed with resin which has. However, the present embodiment is not limited to this. That is, heat is generated at the boundary between the casing and the lid, and the casing and the lid need only be welded. As an example, when the laser beam L is irradiated so as to hit the lower side of the lid, the casing is formed of a resin having light transmission characteristics, and the lid is formed of a thermoplastic resin having light absorption characteristics. Things. Further, both the housing and the lid are resins having light transmission characteristics, and a member having a light absorption characteristic (for example, a thermosetting resin adhesive) is disposed between the housing and the lid, Or the thing with which the balance of the light absorption characteristic light of a housing | casing and a cover body and the permeation | transmission characteristic was adjusted is mentioned.

さらに、本発明は上述した実施の形態のみに限定されるものではなく、既に述べた本発明の要旨を逸脱しない範囲において種々の変更が可能であることは勿論である。   Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention described above.

１０・・・筐体
１１・・・キャビティ
１２・・・通気孔
１３・・・コネクタ
１４・・・換気孔
２０・・・蓋体
３１・・・気体供給路
４０・・・クランプ機構
５０・・・溶着機構
６０・・・気体供給機構 DESCRIPTION OF SYMBOLS 10 ... Housing 11 ... Cavity 12 ... Vent hole 13 ... Connector 14 ... Ventilation hole 20 ... Lid 31 ... Gas supply path 40 ... Clamp mechanism 50 ... -Welding mechanism 60 ... Gas supply mechanism

Claims (4)

筐体と蓋体の溶着方法であって、
前記筐体は、開口を有するキャビティを備えるとともに、外部から前記キャビティまで通じた通気孔が設けられており、
前記溶着方法は、
前記開口を前記蓋体で蓋をして組み立てる工程と、
前記通気孔から前記キャビティ内に気体を供給して前記キャビティ内の気圧を外部の気圧より高める工程と、
前記キャビティ内の気圧を外部の気圧より高めた状態で、前記筐体と前記蓋体を溶着する工程と、
を備え、
前記筐体と前記蓋体を組み立てた組立体は、前記筐体と前記蓋体との境目に前記キャビティまで通じる換気孔を有し、
前記溶着する工程は、溶着工程中に前記筐体と前記蓋体を溶着することで前記換気孔を塞ぐ工程を含む、
溶着方法。 A method of welding a housing and a lid,
The housing includes a cavity having an opening, and a vent hole communicating from the outside to the cavity is provided.
The welding method is:
Assembling the opening with the lid and assembling;
Supplying gas into the cavity from the vent hole to increase the atmospheric pressure in the cavity from the external atmospheric pressure;
Welding the casing and the lid in a state where the atmospheric pressure in the cavity is higher than the external atmospheric pressure;
Equipped with a,
The assembly in which the casing and the lid are assembled has a ventilation hole that leads to the cavity at the boundary between the casing and the lid,
The step of welding includes a step of closing the ventilation hole by welding the casing and the lid during the welding step.
Welding method. 前記筐体は、前記筐体の壁部又は底部に前記キャビティ内に収容される電子部品に電気的に接続される端子を有するコネクタを備え、
前記通気孔の開口は、前記コネクタに設けられている、
請求項１に記載の溶着方法。 The housing includes a connector having a terminal electrically connected to an electronic component housed in the cavity on the wall or bottom of the housing,
The opening of the vent hole is provided in the connector,
The welding method according to claim 1 . 前記筐体及び前記蓋体の互いに溶着される溶着部は、樹脂製又は金属製である、請求項１又は２に記載の溶着方法。 The welding method according to claim 1 or 2 , wherein a welded portion of the casing and the lid that are welded to each other is made of resin or metal. 筐体と蓋体を溶着して格納ケースを製造する製造方法であって、A manufacturing method for manufacturing a storage case by welding a housing and a lid,
前記筐体は、開口を有するキャビティを備えるとともに、外部から前記キャビティまで通じた通気孔が設けられており、  The housing includes a cavity having an opening, and a vent hole communicating from the outside to the cavity is provided.
前記製造方法は、  The manufacturing method includes:
前記開口を前記蓋体で蓋をして組み立てる工程と、  Assembling the opening with the lid and assembling;
前記通気孔から前記キャビティ内に気体を供給して前記キャビティ内の気圧を外部の気圧より高める工程と、  Supplying gas into the cavity from the vent hole to increase the atmospheric pressure in the cavity from the external atmospheric pressure;
前記キャビティ内の気圧を外部の気圧より高めた状態で、前記筐体と前記蓋体を溶着する工程と、  Welding the casing and the lid in a state where the atmospheric pressure in the cavity is higher than the external atmospheric pressure;
を備え、With
前記筐体と前記蓋体を組み立てた組立体は、前記筐体と前記蓋体との境目に前記キャビティまで通じる換気孔を有し、  The assembly in which the casing and the lid are assembled has a ventilation hole that leads to the cavity at the boundary between the casing and the lid,
前記溶着する工程は、溶着工程中に前記筐体と前記蓋体を溶着することで前記換気孔を塞ぐ工程を含む、  The step of welding includes a step of closing the ventilation hole by welding the casing and the lid during the welding step.
製造方法。Production method.
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