JPH0385259U

JPH0385259U -

Info

Publication number: JPH0385259U
Application number: JP14737589U
Authority: JP
Priority date: 1989-12-21
Filing date: 1989-12-21
Publication date: 1991-08-29
Anticipated expiration: 2003-09-17
Also published as: JPH0536783Y2

Description

[Brief explanation of the drawing]

第１図ないし第９図は本考案の第１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図は第６図の−線断面
図、第８図及び第９図は第２図の−線及び
−線断面図、第１０図及び第１１図は本考案の
第２実施例を示すもので、第１０図は第６図と同
様の断面図、第１１図は第１０図の−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、１ｃ……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……位
置決め切欠、４６……突起、４７……位置決め手
段、４９……第１ストツパ突起、５０……第２ス
トツパ突起。 1 to 9 show a first embodiment of the present invention, in which 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 arrow in FIG. 1, and FIG. Explanatory diagrams corresponding to Figure 2 before assembly, Figures 4 and 5
Figures 6 and 6 are sectional views taken along lines -, - and - in Fig. 2, Fig. 7 are sectional views taken along - lines in Fig. 6, and Figs. 8 and 9 are sectional views taken along lines - and - in Fig. 2. 10 and 11 show a second embodiment of the present invention, FIG. 10 is a sectional view similar to FIG. 6, and FIG. 11 is a sectional view taken along the - line in FIG. 10. be. B...Negative pressure booster, 1...Booster shell,
1a, 1b...front and rear shell halves, 1c...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 to 44n... Notch in rear flange, 45... Positioning notch, 46... Projection, 47... Positioning means, 49... First stopper projection, 50... Second stopper projection.

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 step part 27, and overlap each other within the cylindrical part 30 to reach the disassembly position D.
Front and rear flanges 34 and 39, which can be rotated between and assembly position A, are provided on the bulkhead plate 1c and the rear shell half 1b, respectively.
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 the positioning means 47. At disassembly position D of No. 39, the plurality of notches 43 ₁ to 43n; 44
₁ to 44n to enable the flanges 34 and 39 to be fitted into and removed from the cylindrical portion 30, and to clamp the flanges 34 and 39 to the stepped portion 27 at the assembly position A. 42 ₁ to 42n, the outer peripheral bead 5a of the front diaphragm 5 is sandwiched between the front half shell 1a and the partition plate 1c, and the cylindrical portion 3 of the partition plate continuous with the inner peripheral edge of the front flange 34 is provided.
6, and an annular locking protrusion 41 protruding forward and radially outward from the inner peripheral edge of the rear flange 39.
In a tandem negative pressure booster in which the outer peripheral bead 7a of the rear diaphragm 7 is sandwiched between the positioning notch 4 formed in the front flange 34
5 and a projection 46 that projects from the rear flange 39 and engages with the positioning notch 45.