JPH0444444U

JPH0444444U -

Info

Publication number: JPH0444444U
Application number: JP8765190U
Authority: JP
Priority date: 1990-08-22
Filing date: 1990-08-22
Publication date: 1992-04-15

Description

[Brief explanation of the drawing]

第１図は本考案のダツシユポツトのプツシユロ
ツドの実施例及びその配置を示す図、第２図は車
両のアクセルペダルが踏み込まれ絞り弁が大きく
開いて、絞り弁と一体に回動する回動レバーとプ
ツシユロツドとが離れている状態を示す図、第３
図は本考案のダツシユポツトのプツシユロツドの
防塵案内構造の他の実施例を示す図、第４図及び
第５図はエンジンの吸気通路に配置した絞り弁と
ダツシユポツトとの、従来の配置構成の例を示す
図である。１……吸気通路、２……絞り弁、３……回動レ
バー、４……ダツシユポツト、５……ダイアフラ
ム、８……作動部材、９……スプリング、１１…
…プツシユロツド、１３……筒状案内部材、１５
……大間隙部分、１６……キヤツプ、１８……ス
プリング、２１……逆止弁付遅延装置、２４……
エアフイルタ。 Fig. 1 is a diagram showing an embodiment of the push rod of the dart pot of the present invention and its arrangement, and Fig. 2 shows the rotating lever that rotates together with the throttle valve when the accelerator pedal of the vehicle is depressed and the throttle valve opens wide. Figure 3 showing the state in which the push rod is separated from the push rod.
The figure shows another embodiment of the dustproof guide structure for the push rod of the dart pot according to the present invention, and FIGS. 4 and 5 show examples of the conventional arrangement of the throttle valve and the dart pot arranged in the intake passage of the engine. FIG. DESCRIPTION OF SYMBOLS 1... Intake passage, 2... Throttle valve, 3... Rotating lever, 4... Dash pot, 5... Diaphragm, 8... Operating member, 9... Spring, 11...
... Push rod, 13 ... Cylindrical guide member, 15
...Large gap portion, 16...Cap, 18...Spring, 21...Delay device with check valve, 24...
air filter.

Claims

[Claims for Utility Model Registration] A dart pot 4 that delays the closing of a throttle valve 2 disposed in an intake passage 1 of an engine and biased in the closing direction at a small opening near the fully closed position of the throttle valve 2. a push rod 11, one end of which abuts against the outer end surface of the actuating member 8 of the dart pot 4;
It is guided by a cylindrical guide member 13 disposed in the casing forming the intake passage 1 and is slidably arranged in the operating direction of the operating member 8 of the dart pot 4, so that when the throttle valve 2 is opened at a small opening, , in which the rotary lever 3 that rotates integrally with the throttle valve 2 abuts the other end of the push rod 11, at least when the rotary lever 3 does not abut the other end of the push rod 11, A portion exposed from the cylindrical guide member 13 toward the rotating lever 3 is formed to have a smaller diameter than other portions, and the small diameter portion 11-1
When the push rod 11 slides toward the doss pot 4 due to contact with the rotary lever 3, a large gap portion 15 is formed between the push rod 11 and the inner peripheral surface of the cylindrical guide member 13; A dust-proof guide structure for a push rod, characterized in that a dust-proof cap 16 is attached to the end of the push rod 11 on the dart pot 4 side to cover the end of the cylindrical guide member 13 on the dart pot 4 side. The rotating lever 3 is connected to the push rod 1.
Instead of forming at least a portion of the push rod 11 that is exposed from the cylindrical guide member 13 toward the rotary lever 3 side when the push rod 11 is not in contact with the other end of the cylindrical guide member 13 to have a small diameter, the cylindrical guide member 13 A dustproof guide structure for a push rod, characterized in that an inner circumferential surface of the push rod is formed to have a length and a large diameter at least equal to the sliding distance of the push rod 11 from the end on the side of the rotary lever 3.