CN208870662U - Simple gear transmitting is to timing mechanism - Google Patents

Abstract

The utility model discloses a kind of simple gear transmitting to timing mechanism, for assembling timing gear train, simple gear transmitting includes at least timing mechanism: idle gear, the first positioning through hole is offered on anti-attrition face or wearing plate on idle gear shaft, corresponding timing position offers the first blind hole on idle gear, the first gear when idle gear and crankshaft timing gear or first assembled to just after, first positioning through hole can be corresponding with the position of the first blind hole, and positioned the first positioning through hole and the first blind hole by the first positioning mechanism, thus fixed idle gear.The gear transmitting aligning guide of the utility model greatly strengthens engine assembling capacity, improve timing gears assembly accuracy, and it effectively prevents timing gears misloading occur and relatively rotate after there is assembly, the phenomenon that misloading occurs so as to cause subsequent timing gears.

Description

Simple gear transmitting is to timing mechanism

Technical field

The utility model is about field of internal combustion engine, especially with regard to a kind of simple gear transmitting to timing mechanism.

Background technique

Conventional gears drive timing system gear train install or repair engine when be required to according on gear just When mark carry out only marking correct engine that could run well label, if will will lead to timing marks mistake Engine generates valve and beats the catastrophe failures such as piston, rocker arm fracture.And engine assembly to just during, crankshaft cannot The phenomenon that rotating, being easy to appear a wrong tooth in the case where rotational angle very little due to crankshaft, can in case of rotation It can lead to side set and generate above-mentioned failure.This, which can also be likely due to maloperation, leads to crank rotation and occurs to timing mistake.

Specifically, gear tradition timing system generally uses mark to an assembly, generally since crankshaft timing gear, According to the label of design to an assembly, in the process that the timing gears for needing to assemble from crankshaft timing gear to last one assemble In, engine does not allow to rotate, or have relative rotation and it is undiscovered.Due to engine have crankshaft timing gear, idle gear, The gears such as fuel injection pump gear, cam shaft gear are needed to just, so being a relatively long assembly in entire assembling process Journey, keeping in assembling process timing gears not rotate, difficulty is big, and engine is not easy to be found after rotating, assembly efficiency It is low.As shown in Figure 1, being equipped with timing marks on a gear 3, b gear 4, c gear 5, needed when b gear 4 with a gear in assembly Timing marks on 3 and c gear 5 are matched namely 3 timing marks 6 of a gear and 4 timing marks 7 of b gear need to match, together When 4 timing marks 8 of b gear and 5 timing marks 9 of c gear be also required to match, if in the assembly for completing a gear 3 and b gear 4 Afterwards, gear is easy to relatively rotate, and c gear 5 carries out just will appear 5 institute of c gear with clock synchronization again with the label on b gear 4 The timing mechanism of driving goes wrong, to generate corresponding failure.

The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing Technology.

Utility model content

The purpose of this utility model is to provide a kind of transmitting of gear to timing mechanism, can be improved timing gears assembly Accuracy.

To achieve the above object, the utility model provides a kind of simple gear transmitting to timing mechanism, and simple gear passes It passs and timing mechanism includes at least timing mechanism for assembling timing gear train, simple gear transmitting: idle gear, idle gear shaft The first positioning through hole is offered on upper anti-attrition face or wearing plate, it is blind to offer first for corresponding timing position on idle gear Hole, the first gear when idle gear and crankshaft timing gear or first assembled to just after, the first positioning through hole can be with the first blind hole Position it is corresponding, and the first positioning through hole and the first blind hole are positioned by the first positioning mechanism, thus fixed idle gear.

In a preferred embodiment, the transmitting of simple gear further includes second gear and third gear to timing mechanism, The first timing marks and the second timing marks are respectively arranged on idle gear, after idle gear is fixed, second gear and third tooth Wheel can be respectively according to the first timing marks and the second timing marks and idle gear to positive assembly.

In a preferred embodiment, it is fixed that second is offered on the gear shaft of second gear on anti-attrition face or wearing plate Position through-hole, corresponding timing position offers the second blind hole in second gear, and simple gear transmitting further includes to timing mechanism 4th gear, when assembling four gears, the second positioning through hole can be corresponding with the position of the second blind hole, and fixed by second Position mechanism positions the second positioning through hole and the second blind hole, thus fixed second gear.

In a preferred embodiment, the first positioning mechanism and the second positioning mechanism are positioning pin.

Compared with prior art, simple gear transmitting according to the present utility model has the advantages that guarantor to timing mechanism Card is fixed after having assembled the gear first assembled, it cannot be relatively rotated, while the positioning pin or right being inserted into Neat hole system can easily judge whether gear had occurred and that relative rotation, and engine timing gear system is facilitated to assemble.It prevents There is misloading and relatively rotate after there is assembly in timing gears, so as to cause subsequent timing gears showing for misloading occur As improving the efficiency of assembly timing gears, also improving the assembling capacity of timing gears, and fundamentally prevent engine As the problems such as the topping of timing gears valve as caused by assembly problem and fuel pump timing mistake.And due to only increasing Through-hole and blind hole, cost are very nearly the same.

Detailed description of the invention

Fig. 1 is the prior art to timing gears system schematic；

Fig. 2 is the idle gear structural representation transmitted according to the simple gear of one embodiment of the utility model to timing mechanism Figure；

Fig. 3 is cross-sectional view of the Fig. 1 along the direction A-A.

Main appended drawing reference explanation:

1- idle gear, the first blind hole of 11-, 2- idle gear shaft, the first positioning through hole of 21-.

Specific embodiment

With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical Novel protection scope is not limited by the specific implementation.

Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members Part or other component parts.

As shown in Figure 2 to Figure 3, timing mechanism is used for according to the transmitting of the simple gear of the preferred embodiments of the present invention Assemble timing gear train, the transmitting of simple gear includes at least timing mechanism: idle gear 1 anti-attrition face or subtracts on idle gear shaft 2 The first positioning through hole 21 is offered on nog plate, corresponding timing position offers the first blind hole 11 on idle gear 1, works as idle gear 1 with crankshaft timing gear or the first gear first assembled to after just, the first positioning through hole 21 can be with the position of the first blind hole 11 It is corresponding, and positioned the first positioning through hole 21 and the first blind hole 11 by the first positioning mechanism, thus fixed idle gear 1.

Simple gear transmitting further includes second gear and third gear to timing mechanism, and the is respectively arranged on idle gear 1 One timing marks and the second timing marks, after idle gear 1 is fixed by positioning pin, second gear and third gear can be distinguished According to the first timing marks and the second timing marks and idle gear 1 to positive assembly.

In a preferred embodiment, it is fixed that second is offered on the gear shaft of second gear on anti-attrition face or wearing plate Position through-hole, corresponding timing position offers the second blind hole in second gear, and simple gear transmitting further includes to timing mechanism 4th gear, when assembling four gears, the second positioning through hole can be corresponding with the position of the second blind hole, and fixed by second Position mechanism positions the second positioning through hole and the second blind hole, thus fixed second gear, then respectively according to second gear and the 4th Timing marks on gear complete the assembly of the 4th gear.

In a preferred embodiment, timing gears can be realized with cylinder block by gear itself and be fixed and to timing function Energy.

In a preferred embodiment, the first positioning mechanism and the second positioning mechanism are positioning pin.

The simple gear transmitting of the utility model includes the following steps: in idle gear shaft the operating method of timing mechanism Upper anti-attrition face or wearing plate open up the first positioning through hole；Corresponding timing position opens up the first positioning blind on idle gear Hole；After idle gear is with crankshaft timing gear or other gear mesh timings first assembled, the first positioning through hole is determined with first The position of position blind hole is corresponding；And positioned the first positioning through hole and the first blind hole using the first positioning mechanism, with solid Determine idle gear, prevent idle gear from relatively rotating, wherein the first positioning through hole and first can be inserted into using positioning pin Idle gear is fixed in blind hole, or can easily can judge whether gear had occurred and that opposite turn by the hole system of alignment It is dynamic, so that engine timing gear system be facilitated to assemble.After idle gear is fixed, second gear and third gear can respectively according to The second timing marks on the first timing marks and third gear and idle gear in second gear are to positive assembly.

In a preferred embodiment, operating method further include: when second gear and third gear after the assembly is completed, The second positioning through hole is opened up on anti-attrition face or wearing plate on second gear axis；Corresponding timing position is opened in second gear If the second blind hole；Second positioning through hole is corresponding with the position of the second blind hole；It is using the second positioning mechanism that the second positioning is logical Hole and the second blind hole are positioned, so that fixed second gear, prevents second gear from relatively rotating；When second gear is solid After fixed, the 4th gear is respectively according to the 4th timing marks and second on the third timing marks and the 4th gear in second gear Gear mesh just assembles.The gear in need to timing be designed by this structure and assemble according to the above method, thus Guarantee that gear phase itself is correct.

In a preferred embodiment, the first positioning mechanism and the second positioning mechanism are positioning pin.

The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes Formula is limited.

Claims (4)

1. a kind of simple gear transmitting is to timing mechanism, the simple gear transmitting is to timing mechanism for assembling timing gears System, the simple gear transmitting include at least timing mechanism: idle gear, which is characterized in that on idle gear shaft anti-attrition face or The first positioning through hole is offered on wearing plate, corresponding timing position offers the first blind hole on the idle gear, when described Idle gear and crankshaft timing gear or the first gear first assembled to after just, first positioning through hole can with it is described first blind The position in hole is corresponding, and is positioned first positioning through hole and first blind hole by the first positioning mechanism, thus solid The fixed idle gear.

2. simple gear transmitting as described in claim 1 is to timing mechanism, which is characterized in that the simple gear transmitting is to just When mechanism further include second gear and third gear, the first timing marks and the second positive markers are respectively arranged on the idle gear Note, after the idle gear is fixed, the second gear and the third gear can be respectively according to first timing marks With second timing marks and the idle gear to positive assembly.

3. gear transmitting as claimed in claim 2 simple is to timing mechanism, which is characterized in that on second gear axis anti-attrition face or The second positioning through hole is offered on person's wearing plate, corresponding timing position offers the second blind hole, institute in the second gear Stating simple gear transmitting further includes the 4th gear to timing mechanism, when assembling four gear, second positioning through hole Can be corresponding with the position of second blind hole, and pass through the second positioning mechanism for second positioning through hole and described second Blind hole positioning, thus the fixed second gear.

4. simple gear transmitting as claimed in claim 3 is to timing mechanism, which is characterized in that first positioning mechanism and institute Stating the second positioning mechanism is positioning pin.