CN212250309U

CN212250309U - Novel engine recoil starter structure

Info

Publication number: CN212250309U
Application number: CN202021488883.2U
Authority: CN
Inventors: 张建斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2020-12-29
Anticipated expiration: 2030-07-25

Abstract

The utility model relates to a novel engine recoil starter structure, including starting cover, base, start ratchet, auxiliary spring, start rope sheave, start spring, handle, base screw, start the stay cord. The utility model discloses under this kind of external starting spring's structure, both can satisfy starting rope sheave pivoted flexibility, can ensure again that starting spring can not lead to breaking down because of the unhook appears in engine working process. This overcomes the problems of conventional starting structures on the market: the starting spring outer hook is larger in set clearance and can be popped out, the set clearance is small, the rope wheel cannot rotate flexibly enough, the starting handle cannot reset smoothly, the failure rate is greatly reduced, the maintenance and the use of equipment are facilitated, time and labor are saved, and the device is more humanized.

Description

Novel engine recoil starter structure

Technical Field

The utility model relates to an engine recoil starting technical field specifically is a novel engine recoil starter structure.

Background

The hand-pull-started small gasoline engine has the advantages of simple structure, light weight and wide application in hand-held garden tools. The whole process from the starting of the crank shaft to the automatic idling of the engine is started under the action of the external force of the hand-pull starter, and the process is called the starting process of the engine. The general recoil starter is composed of a starter housing, a return spiral coil spring, a starting handle, a pull rope, a starting rope pulley and the like, wherein a wheel claw is arranged on the starting rope pulley, the wheel claw can be combined with a pawl fixed on a flywheel, and the flywheel is fixed on a crankshaft. When the engine is started, the starting handle is tightly held to pull the pull rope, the pull rope drives the starting rope wheel to rotate, the starting rope wheel drives the return spiral coil spring to contract, a wheel claw on the starting rope wheel and a pawl on the flywheel are combined to drive the flywheel to rotate, the crankshaft is further rotated, and the engine automatically idles: and (3) loosening the starting rope, unfolding the return spiral coil spring, restoring to the original state, driving the starting rope pulley to rotate reversely, winding the rope pulling net on the starting rope pulley, and separating the pawl from the wheel claw under the action of centrifugal force, thereby finishing the starting process of the engine.

The starter is a recoil starting structure, and the rotating part and the static part need to keep mutual flexibility in the starting process so as to ensure that the starting handle can be smoothly reset, otherwise, the function of the starting machine fails. The conventional starter structure has a starting spring installed on a starting rope wheel, and a starting spring installed in a spring groove at the bottom of a starting cover. In order to ensure the flexibility of the moving part, the fit clearance between the matching parts is required to be not too small, the clearance is too small, the starting spring of the starter cannot be normally reset due to the friction force between the parts, but not too large, the fit clearance is too large, and in the working state of the engine, the starting spring can be separated from the starting rope wheel or the starting cover at the original installation position or the spring explodes and expands due to the vibration of the engine, so that the starting function is failed.

SUMMERY OF THE UTILITY MODEL

In view of the problems existing in the prior art, the utility model discloses a novel engine recoil starter structure, the technical scheme of adoption is, include: the base is connected with the left end face of the starting cover through a base screw, a starting spring is buckled between the base and the starting cover, a starting rope wheel is sleeved in an inner cavity of the starting cover, a starting pull rope is wound on the starting rope wheel, one end of the starting pull rope is fixedly connected with the starting rope wheel, the other end of the starting pull rope extends out of a side wall hole of the starting cover and is fixedly connected with a handle, a starting ratchet is sleeved on the right end face of the starting rope wheel, an auxiliary spring is arranged between the starting rope wheel and the starting rope wheel, and two ends of the auxiliary spring are respectively fixed on the starting rope wheel and the side face corresponding to the starting ratchet.

As a preferred scheme of the utility model, the through-hole has been seted up to the start cap left end face and the fender ring that is provided with and is interrupted, start the rope sheave left end face and be provided with the wheel claw, all be provided with the fixed head on the inside and outside both tops of starting spring, the wheel claw that starts the rope sheave with the through-hole slip of start cap cup joints, and with the inboard fixed head joint of starting spring, the outside fixed head of starting spring with the fender ring joint is interrupted of start cap left end face.

As an optimized scheme of the utility model, the ring shape recess has been seted up on starting the ratchet left surface, is provided with the ratchet on the right flank, vice spring cup joint start in the ring shape recess of rope sheave.

The utility model has the advantages that: the utility model discloses under this kind of external starting spring's structure, both can satisfy starting rope sheave pivoted flexibility, can ensure again that starting spring can not lead to breaking down because of the unhook appears in engine working process. The flexibility of the starting spring is ensured, and the moving range of the starting spring is controlled, so that the problems of the conventional starting structure in the market can be overcome: the starting spring outer hook is larger in set clearance and can be popped out, the set clearance is small, the rope wheel cannot rotate flexibly enough, the starting handle cannot reset smoothly, the failure rate is greatly reduced, the maintenance and the use of equipment are facilitated, time and labor are saved, and the device is more humanized.

Drawings

Fig. 1 is a first schematic view of an explosive structure according to the present invention;

fig. 2 is a second schematic view of the explosive structure of the present invention.

In the figure: 1-starting cover, 2-base, 3-starting ratchet, 4-auxiliary spring, 5-starting rope wheel, 6-starting spring, 7-handle, 8-base screw and 9-starting pull rope.

Detailed Description

Example 1

As shown in fig. 1 to fig. 2, the technical solution adopted by the novel engine recoil starter structure of the present invention is that, the novel engine recoil starter structure comprises: the starting device comprises a base 2, the base 2 is connected with the left end face of a starting cover 1 through a base screw 8, a starting spring 6 is buckled between the base 2 and the starting cover 1, a starting rope pulley 5 is sleeved in the inner cavity of the starting cover 1, a starting pull rope 9 is wound on the starting rope pulley 5, one end of the starting pull rope 9 is fixedly connected with the starting rope pulley 5, the other end of the starting pull rope 9 extends out of a side wall hole of the starting cover 1 and is fixedly connected with a handle 7, a starting ratchet 3 is sleeved on the right end face of the starting rope pulley 5, an auxiliary spring 4 is arranged between the starting rope pulley 5 and the starting ratchet 3, and two ends of the auxiliary spring 4 are respectively fixed on the starting rope pulley 5 and the.

The through-hole has been seted up to 1 left end face of starting hood and the fender ring that is provided with to be interrupted, 5 left end faces of starting rope sheave are provided with the wheel claw, all be provided with the fixed head on the inside and outside both tops of starting spring 6, the wheel claw of starting rope sheave 5 with the through-hole of starting hood 1 slides and cup joints, and with the inboard fixed head joint of starting spring 6, the outside fixed head of starting spring 6 with the fender ring joint that is interrupted of 1 left end face of starting hood.

The left side surface of the starting ratchet 3 is provided with a circular groove, the right side surface of the starting ratchet is provided with a ratchet, and the auxiliary spring 4 is sleeved in the circular groove of the starting rope wheel 5.

The utility model discloses a theory of operation: the utility model pulls the starting rope 9 by tightly holding the handle 7, the starting rope 9 drives the starting rope wheel 5 to rotate, the starting rope wheel 5 drives the starting spring 6 to contract, the starting ratchet 3 on the starting rope wheel 5 drives the flywheel to rotate, further the crankshaft rotates, and the engine automatically runs at idle speed; the starting rope pulley 5 is driven to rotate reversely by loosening the starting rope 9, the starting spring 6 is unfolded and restored to the original state, the starting rope pulley 9 is wound on the starting rope pulley 5, and the starting ratchet 3 is separated from the flywheel under the action of centrifugal force; when the starting spring 6 needs to be maintained or replaced, the base screw 8 is unscrewed, and the base 2 is opened.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations without creative efforts are still within the scope of the present invention.

Claims

1. A novel engine recoil starter structure, comprising: base (2), base (2) pass through base screw (8) and the left end face screw connection of starting cover (1), base (2) with the lock has starting spring (6) between starting cover (1), starting cover (1) inner chamber has cup jointed starting rope sheave (5), the winding has started stay cord (9) on starting rope sheave (5), start stay cord (9) one end with start rope sheave (5) fixed connection, the other end is followed the downthehole stretching out of starting cover (1) lateral wall to with handle (7) fixed connection, start rope sheave ratchet (5) right-hand member face has cup jointed and has started (3), and is equipped with auxiliary spring (4) between the two, the both ends of auxiliary spring (4) are fixed respectively start rope sheave (5) with start on the corresponding side of ratchet (3).

2. The novel engine recoil starter structure of claim 1, wherein: the through-hole has been seted up to start cover (1) left end face and the fender ring that is provided with and is interrupted, start rope sheave (5) left end face is provided with the wheel claw, all be provided with the fixed head on starting spring (6) inside and outside both tops, the wheel claw that starts rope sheave (5) with the through-hole slip of start cover (1) cup joints, and with the inboard fixed head joint of starting spring (6), the outside fixed head of starting spring (6) with the fender ring joint that is interrupted of start cover (1) left end face.

3. The novel engine recoil starter structure of claim 1, wherein: the left side surface of the starting ratchet (3) is provided with a circular groove, the right side surface of the starting ratchet (3) is provided with a ratchet, and the auxiliary spring (4) is sleeved in the circular groove of the starting rope wheel (5).