JPS63177623U

JPS63177623U -

Info

Publication number: JPS63177623U
Application number: JP6752787U
Authority: JP
Priority date: 1987-05-06
Filing date: 1987-05-06
Publication date: 1988-11-17
Also published as: JPH0429053Y2

Description

[Brief explanation of drawings]

第１図は本考案に係る熱交換器用樹脂キヤツプ
の構造を示す中央縦端面図、第２図はキヤツプ本
体の平面図、第３図は第２図の―線断面図、
第４図はキヤツプ本体の裏面に設けた保持突起及
び取付用突起の底面図、第５図は弁ケースの平面
図、第６図は第５図の―線断面図、第７図は
弁ケースの円筒状突起の底面図、第８図は弁取付
部の平面図、第９図は第８図の―線断面図、
第１０図は弾性パツキンの平面図、第１１図は第
１０図の―線断面図、第１２図は冷却系の加
圧時に於ける上記実施例に係る熱交換器用樹脂キ
ヤツプの機能説明図、第１３図は冷却系の負圧時
に於ける上記実施例に係る熱交換器用樹脂キヤツ
プの機能説明図、第１４図は従来の熱交換器用キ
ヤツプの構造説明図である。２１……蓋体、２３……フイラネツク、２５…
…保持突起、２５ｂ，３３ｂ，３９ａ……切込み
、２７……加圧スプリング、２９，４５……Ｏ―
リング取付用突起、３１，３７……Ｏ―リング、
３３……係合突起、３３ａ……環状凹溝、３５…
…弁ケース、３９……円筒状突起、４１……環状
肩部、４３……弁取付部、４７……負圧通気孔、
５３……弾性パツキン、５５……突起、５７……
舌片。 Fig. 1 is a central longitudinal end view showing the structure of a resin cap for a heat exchanger according to the present invention, Fig. 2 is a plan view of the cap body, Fig. 3 is a sectional view taken along the line - - of Fig. 2,
Fig. 4 is a bottom view of the holding protrusion and mounting protrusion provided on the back of the cap body, Fig. 5 is a plan view of the valve case, Fig. 6 is a sectional view taken along the line - - of Fig. 5, and Fig. 7 is the valve case. Fig. 8 is a plan view of the valve mounting part, Fig. 9 is a sectional view taken along the line - - of Fig. 8,
FIG. 10 is a plan view of the elastic packing, FIG. 11 is a sectional view taken along the line -- in FIG. FIG. 13 is a functional explanatory diagram of the resin cap for a heat exchanger according to the above embodiment when the cooling system is under negative pressure, and FIG. 14 is an explanatory diagram of the structure of a conventional heat exchanger cap. 21...Lid body, 23...Firanetsk, 25...
...Holding protrusion, 25b, 33b, 39a...Notch, 27...Pressure spring, 29,45...O-
Ring mounting protrusion, 31, 37...O-ring,
33... Engaging protrusion, 33a... Annular groove, 35...
... Valve case, 39 ... Cylindrical projection, 41 ... Annular shoulder, 43 ... Valve mounting part, 47 ... Negative pressure vent,
53...Elastic packing, 55...Protrusion, 57...
Tongue piece.

Claims

[Scope of Claim for Utility Model Registration] (1) A lid body that is secured to the fillet neck of the heat exchanger and has a sealing member attached to the back side of the fillet neck for airtightness with the filler neck, and a lid body that is attached to the lid body and that is attached to the fillet neck of the heat exchanger. A resin cap for a heat exchanger, comprising a valve case that presses against a valve seat, and a pressurization/pressure valve mechanism installed inside the valve case. (2) The valve case has a cylindrical engagement protrusion that engages with a cylindrical holding protrusion vertically installed on the back of the lid body, and a stepped part that presses against the valve seat of the filler neck to engage the engagement protrusion. Utility model registration claim 1, characterized in that it consists of a small-diameter cylindrical protrusion into which a sealing member is connected and fitted to ensure airtightness with the fillet neck.
Resin cap for heat exchanger as described in section. (3) The pressurizing/lowering valve mechanism has a negative pressure vent, and the lower end of the pressurizing spring interposed between the lid body and the cylindrical protrusion formed on the top surface fits outward, so that the valve case is flush with the valve case. It consists of a valve mounting part that is pressed against the valve mounting part, and an elastic packing attached to the back side of the valve mounting part. A resin for a heat exchanger according to claim 1, which is characterized in that a tongue piece is provided that closes a cooling water passage of a pressure vent and opens the cooling water passage by bending when the cooling system is under negative pressure. Cap.