CN2660153Y - Enabling presure-relief device of general gasoline engine - Google Patents

Abstract

The utility model relates to a common petrol engine component, in particular to a common petrol engine starting and pressure reducing device; the device comprises a camshaft 1, an acentric arm 2, a reset device 6 equipped between the camshaft and the acentric arm, a transmission fork rotary shaft 10 corresponding to the acentric arm bayonet 12 and a transmission fork pressure reducing block 11; the utility model is characterized in that the transmission fork is one equipped with a pin shaft 10 and the pin shaft is fixed on a shaft 7. The utility model has the advantages of simple structure, a small amount of parts, easy assembly, high work efficiency and excellent technological requirement control.

Description

General gasoline engines starts pressure relief device

One, technical field

The utility model relates to a kind of general gasoline engines accessory, and particularly general gasoline engines starts pressure relief device.

Two, technical background

General gasoline engines is generally before startup, its valve is an open mode, behind gasoline engine starting, its valve need be closed storage and be pressed, its startup pressure relief device included camshaft in the past, Returnning spring, the bearing pin of centrifuge arm fixed decompression piece and decompression pull-fork assembly etc., it is to make the centrifuge arm motion drive the shift fork rotation by centrifugal force to make valve-closing.Its deficiency be because: shift fork is by another part---bearing pin is fixed on the camshaft, so part is more, install inconvenient, complex structure.

Three, technology contents

The purpose of this utility model is exactly that a kind of general gasoline engines simple in structure, that part is few, easy for installation of design starts pressure relief device, it includes the resetting means of camshaft, centrifuge arm and between, and by the shift fork rotating shaft of centrifuge arm bayonet socket correspondence, shift fork decompression piece, it is characterized in that: shift fork is the shift fork of band bearing pin, and bearing pin is fixed on the axle.

The utility model is because the decompression shift fork that adopts is the shift fork of band bearing pin, thereby reduced bearing pin and shift fork riveted joint assembly technology, advantage such as have that structure is simpler, part is few, assembling is easy, raising work efficiency, technical requirements are controlled well.

Four, description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the left side view of Fig. 1.

Among the figure: 1, camshaft, 2, centrifuge arm, 3, the decompression shift fork, 4, guide chute, 5, directional post, 6, resetting means, 7, axle, 8, back-up ring, 9, bearing pin, 10, the shift fork rotating shaft, 11, the decompression piece, 12, the centrifuge arm bayonet socket.

Five, embodiment

As shown in the figure, a kind of general gasoline engines starts pressure relief device, include the resetting means 6 of camshaft 1, centrifuge arm 2 and between, and by the shift fork rotating shaft 10 of centrifuge arm bayonet socket 12 correspondences, shift fork decompression piece 11, it is characterized in that: shift fork is the shift fork of band bearing pin 9, and bearing pin is fixed on the axle 7; This bearing pin can be fixed on the axle 7 by back-up ring 8, so that bearing pin can rotate freely in axle, does not withdraw from outside the axle, also can directly be fixed on the axle 7; In like manner, for making shift fork rotating shaft rotation freely, the rotating shaft of decompression shift fork can be circle or ellipse.

Claims (3)

1, a kind of general gasoline engines starts pressure relief device, include the resetting means (6) of camshaft (1), centrifuge arm (2) and between, and by the corresponding shift fork rotating shaft (10) of centrifuge arm bayonet socket (12), shift fork decompression piece (11), it is characterized in that: shift fork is fixed on the axle (7) for the shift fork of band bearing pin (10), this bearing pin.

2, general gasoline engines as claimed in claim 1 starts release decompression shift fork, and it is characterized in that: bearing pin is fixed on the axle (7) with back-up ring (8).

3, general gasoline engines as claimed in claim 1 starts release decompression shift fork, it is characterized in that: the rotating shaft of decompression shift fork is for circular or oval.

Images