JPH0393272U

JPH0393272U -

Info

Publication number: JPH0393272U
Application number: JP246790U
Authority: JP
Priority date: 1990-01-16
Filing date: 1990-01-16
Publication date: 1991-09-24
Anticipated expiration: 2003-10-01
Also published as: JPH0539020Y2

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図
はタンデム型負圧ブースタの縦断側面図、第２図
は第１図の矢視図、第３図は組立前の第２図に
対応した説明図、第４図、第５図及び第６図は第
２図の−線、−線及び−線断面図、
第７図は位置決め治具の斜視図、第８図及び第９
図は第２図の−線及び−線断面図である
。Ｂ……負圧ブースタ、１……ブースタシエル、
１ａ，１ｂ……前、後部シエル半体、４ｃ……隔
壁板、２……前部シエル室、３……後部シエル室
、５……前部ダイヤフラム、５ａ……同外周ビー
ド、７……後部ダイヤフラム、７ａ……同外周ビ
ード、２７……段部、３０……前部シエル半体の
円筒部、３４，３９……前、後部フランジ、３６
……隔壁板の円筒部、４２_１〜４２ｎ……係止爪
、４３_１〜４３ｎ……前部フランジの切欠、４４
_１〜４４ｎ……後部フランジの切欠、４５，４６
……位置決め孔、４７……位置決め治具。 The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal cross-sectional side view of a tandem negative pressure booster, Fig. 2 is a view taken in the direction of the arrows in Fig. 1, and Fig. 3 is a diagram showing Fig. 2 before assembly. The corresponding explanatory drawings, FIG. 4, FIG. 5, and FIG. 6 are sectional views taken along lines -, -, and - of FIG.
Figure 7 is a perspective view of the positioning jig, Figures 8 and 9.
The figures are sectional views taken along the - line and - line in FIG. 2. B...Negative pressure booster, 1...Booster shell,
1a, 1b...front and rear shell halves, 4c...partition plate, 2...front shell chamber, 3...rear shell chamber, 5...front diaphragm, 5a...outer peripheral bead, 7... Rear diaphragm, 7a... Same outer peripheral bead, 27... Step part, 30... Cylindrical part of front shell half, 34, 39... Front, rear flange, 36
... Cylindrical part of partition plate, 42 ₁ to 42n ... Locking claw, 43 ₁ to 43n ... Notch in front flange, 44
₁ ~ 44n...Notch in rear flange, 45, 46
...Positioning hole, 47...Positioning jig.

Claims

[Claims for Utility Model Registration] Bottomed cylindrical front shell half 1a with open rear end
, a rear shell half 1b that closes the open end of the front shell half 1a, and both front and rear shell halves 1.
sandwiched between a and 1b, both shell halves 1a and 1
A booster shell 1 is constituted by a partition wall plate 1c that divides the chamber between the two halves into a front shell chamber 2 and a rear shell chamber 3, and an annular step extending radially outward is formed at the rear end of the front shell half 1a. part 27 and a cylindrical part 30 extending rearward from the outer periphery of this stepped part 27, and overlap each other within the cylindrical part 30 to reach the disassembly position D.
Front and rear flanges 34, 39, which can be rotated between
Numerous notches 43 ₁ to 43n; 44 ₁ to 43 n on the periphery of 9;
44n arranged in the circumferential direction, both flanges 34
, 39, with the notches 43 ₁ to 43n; 44 ₁ to 44n aligned, the flanges 34 and 39 are connected in the circumferential direction via positioning means, and the cylindrical portion 30 has the flanges 34 and 39 At the disassembly position D, the plurality of notches 43 ₁ to 43n; 44 ₁ to
44n and both flanges 3 to the cylindrical part 30.
A large number of locking claws 42 ₁ to 42n are provided to allow the fitting and removal of the flanges 34 and 39 to the step portion 27 at the assembly position A, and the front shell half 1a and the partition wall The outer peripheral bead 5a of the front diaphragm 5 is sandwiched between the plates 1c, and the cylindrical part 36 of the partition plate continuous with the inner peripheral edge of the front flange 34 and the outer peripheral bead 5a of the front diaphragm 5 are sandwiched between the outer peripheral bead 5a of the front diaphragm 5 and the outer peripheral bead 5a of the front diaphragm 5. In a tandem negative pressure booster in which the outer circumferential bead 7a of the rear diaphragm 7 is sandwiched between an annular locking protrusion 41 protruding toward the direction, the front and rear flanges 34 and 39 are provided with substantially identical positioning holes. holes 45 and 46, and both flanges 34 by simultaneously engaging with these positioning holes 45 and 46.
, 39 in the circumferential direction.