FLOW PATH ASSEMBLY AND METHOD FOR PRODUCTION THEREOF

• Main Author: SHIMAMURA AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 15.12.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STAMPS; TRANSPORTING; TYPEWRITERS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To solve such a problem that when a contact part except a welding part generates in vibration welding for joining a resin member, liquid leakage occurs by losing a vibration energy from the contact part to deteriorate weldability.SOLUTION: There is provided a production method for a flow path assembly comprising positioning a protrusion 13 formed to a first welding member 1 by inserting into a hole 22 formed to a second welding member 2 and forming a flow path by welding the joint area of the first and second welding members 1 and 2. The method includes: a positioning step of narrowing the clearance between the protrusion 13 and the hole 22 to the utmost extent at the root side of the protrusion 13 below the half of the height direction of the hole 22; and a welding step of welding the sides of the protrusion 13 and the hole 22 by partially contacting only at the root side of the protrusion 13 below the half of the height direction of the hole 22. 【課題】 樹脂部材を接合する振動溶着で溶着部以外に接触部が生じると、そこから振動エネルギーをロスしてその近傍の溶着性を低下させ、液漏れが発生する懸念がある。【解決手段】 本発明は、第一の溶着部材１に形成された凸部１３を、第二の溶着部材２に形成された穴部２２に挿入して位置決めし、第一の溶着部材１と第二の溶着部材２の接合面を溶着して流路を形成する流路構成体の製造方法に係わる。上記課題を解決するため、この方法は、穴部２２の高さ方向半分以下より凸部１３の根元側で、凸部１３と穴部２２との隙間を最も狭くする位置決め工程と、穴部２２の高さ方向半分以下より凸部１３の根元側のみで凸部１３の側面と穴部２２の側面とを部分当接して溶着する溶着工程とを含む。【選択図】 図１