CN202596826U - Damping system for air distribution mechanism - Google Patents
Damping system for air distribution mechanism Download PDFInfo
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- CN202596826U CN202596826U CN 201220094314 CN201220094314U CN202596826U CN 202596826 U CN202596826 U CN 202596826U CN 201220094314 CN201220094314 CN 201220094314 CN 201220094314 U CN201220094314 U CN 201220094314U CN 202596826 U CN202596826 U CN 202596826U
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- arm shaft
- pitman arm
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Abstract
The utility model provides a damping system (10) for an air distribution mechanism. The damping system comprises a rocker shaft (11) and a rocker (12) which is rotatably supported on the rocker shaft (11), wherein an end part of the rocker shaft (11) is supported in a rocker shaft supporting hole (131) formed on a cylinder body (13) of an internal-combustion engine; an oil channel (110) is formed in the rocker shaft (11); an oil inlet (111) of the oil channel (110) is arranged on an end face (116) of the rocker shaft (11); an oil outlet (112) of the oil channel (110) is arranged close to a part for bearing the impact of the rocker (12); hydraulic oil (P) from a tail oil pump enters into the oil channel (110) through the oil inlet (111) and then flows from the oil outlet (112) of the oil channel (110); an oil film (M1) between the rocker shaft (11) and a rocker axle hole (121) close to the oil outlet (112) is formed by the effluent hydraulic oil; and the vibration generated by the impact between the rocker shaft (11) and the rocker axle hole (121) is absorbed by the oil film (M1), so that the generation of noise is reduced.
Description
Technical field
The utility model relates to a kind of shock mitigation system, particularly the shock mitigation system of I. C engine distribution mechanism.
Background technique
Along with reaching its maturity of vehicles such as automobile, motorcycle technology, the user requires increasingly highly for the travelling comfort aspect of vehicle, and reducing vibrations, reducing noise is exactly one of them.
As the power source of vehicle, the internal-combustion engine of vehicle runs up.Between the on-stream period of internal-combustion engine, the inlet and outlet door of cylinder carries out opening and closing with the thousands of inferior frequencies of per minute.Whenever close once with regard to the countercylinder head and produce once bump, this bump becomes the main focus of vehicle, and its vibrations and the noise that produces pass to the outside of internal-combustion engine through pitman arm shaft, becomes the main noise source of vehicle.
At present; As reducing the such vibrations and the means of noise; The main employing the tight parcel of noise source with means of carrying out sound insulation and the pad that absorbing vibration and noise are set in the transmission propagation path of vibrations and noise etc. with blocking-up vibrations and noise means to cockpit or external world's transmission.
Yet, adopt above-mentioned means to carry out the method for shock insulation noise abatement, need component such as extra interpolation Wrap device or pad, this has not only increased the weight of internal-combustion engine self, and manufacturing and assembly cost are also than higher.
The model utility content
The utility model is accomplished for addressing the above problem, and its purpose is to provide a kind of distribution device shock mitigation system, and this distribution device shock mitigation system need not to increase the effect that component can reach damping noise reduction, and manufacturing and assembly cost are cheap.In addition, other of the utility model is to provide a kind of internal-combustion engine and the vehicle with this internal-combustion engine with distribution device shock mitigation system of the utility model.
For realizing above-mentioned model utility purpose; A technological scheme according to the utility model provides a kind of distribution device shock mitigation system; Comprise pitman arm shaft and be rotatably supported in the rocking arm on this pitman arm shaft, it is characterized in that the inside of said pitman arm shaft is provided with oil duct; Said oil duct has at least one oil outlet, and said oil outlet is located at said pitman arm shaft and bears near the position from the impact of said rocking arm.
Be formed with a plurality of annular grooves on the outer circumferential face of preferred said pitman arm shaft, and during from the radially observation of said pitman arm shaft, said annular groove lay respectively at said oil duct said oil outlet both sides and be positioned at the inboard of the rocker shaft hole end face of said rocking arm; Perhaps be formed with a plurality of annular grooves on the internal face of the said rocker shaft hole of said rocking arm, and during from the radially observation of said pitman arm shaft, said annular groove lays respectively at the both sides of said oil outlet.
Another technological scheme according to the utility model provides a kind of distribution device shock mitigation system; Comprise pitman arm shaft and be rotatably supported in the rocking arm on this pitman arm shaft; The two end part of said pitman arm shaft are bearing in the pitman arm shaft support holes of internal-combustion engine, it is characterized in that, said internal-combustion engine is provided with oil duct; Said oil duct has at least one oil outlet, and said oil outlet is located near the position that said pitman arm shaft impacts to said pitman arm shaft support holes.
Another technological scheme according to the utility model provides a kind of distribution device shock mitigation system; Comprise pitman arm shaft and be rotatably supported in the rocking arm on this pitman arm shaft; The two end part of said pitman arm shaft are bearing in the pitman arm shaft support holes of internal-combustion engine, it is characterized in that, the inside of said pitman arm shaft is provided with oil duct; Said oil duct has at least one oil outlet, and said oil outlet is located near the position that said pitman arm shaft impacts to said pitman arm shaft support holes.
Preferably on the outer circumferential face of said pitman arm shaft, be provided with a plurality of annular grooves, and during from the radially observation of said pitman arm shaft, it is inboard that said annular groove lays respectively at the end face of both sides and said pitman arm shaft support holes of said oil outlet of said oil duct; Perhaps, the internal face of said pitman arm shaft support holes is provided with a plurality of annular grooves, and during from the radially observation of said pitman arm shaft, said annular groove lays respectively at the both sides of said oil outlet.
Another technological scheme according to the utility model provides a kind of distribution device shock mitigation system; Comprise pitman arm shaft and be rotatably supported in the rocking arm on this pitman arm shaft; The two end part of said pitman arm shaft are bearing in the pitman arm shaft support holes of internal-combustion engine; It is characterized in that; Said internal-combustion engine is provided with first oil duct, and said first oil duct has at least one first oil outlet, and said first oil outlet is located near the position that said pitman arm shaft impacts to said pitman arm shaft support holes; Said pitman arm shaft inside is provided with second oil duct; Said second oil duct is communicated with at least one said first oil outlet of said first oil duct, and said second oil duct has at least one second oil outlet, and said second oil outlet is located at said pitman arm shaft and bears near the position of the impact of said rocking arm and/or near said pitman arm shaft the position that said pitman arm shaft support holes is impacted.
Another one technological scheme according to the utility model provides a kind of distribution device shock mitigation system; Comprise pitman arm shaft and be rotatably supported in the rocking arm on this pitman arm shaft; The two end part of said pitman arm shaft are bearing in the pitman arm shaft support holes of internal-combustion engine, it is characterized in that, the inside of said pitman arm shaft is provided with oil duct; Said oil duct has: at least one first oil outlet, said first oil outlet are located near the position that said pitman arm shaft impacts to said pitman arm shaft support holes; At least one second oil outlet, said second oil outlet are located at said pitman arm shaft and bear near the position from the impact of said rocking arm.
According to the utility model a kind of internal-combustion engine is provided, comprises distribution device, it is characterized by, its distribution device has the distribution device shock mitigation system of the utility model.
According to the utility model a kind of vehicle is provided, it is characterized by, it has the described internal-combustion engine of claim 9.
Distribution device shock mitigation system according to the utility model; Owing to the pitman arm shaft set inside oil duct of the hydraulic oil that utilizes hydraulic-pressure pump to provide at internal-combustion engine; In the future the random position of hydraulic oil from pitman arm shaft of self-hydraulic oil pump is incorporated into the said oil duct, the oil outlet of oil duct is arranged on pitman arm shaft bears near the position from the impact of rocking arm; Perhaps; Utilize hydraulic oil that hydraulic-pressure pump provides pitman arm shaft set inside oil duct at internal-combustion engine; In the future the random position of hydraulic oil from pitman arm shaft of self-hydraulic oil pump is incorporated into the oil duct, and the oil outlet of said oil duct is arranged near the position that said pitman arm shaft impacts to said pitman arm shaft support holes; Perhaps, at cylinder head, cylinder head or cylinder block set inside oil duct, the oil outlet of oil duct is arranged near the position that pitman arm shaft impacts to the pitman arm shaft support holes; Perhaps; At cylinder head, cylinder head or cylinder block set inside first oil duct; First oil outlet of first oil duct is arranged near the position that pitman arm shaft impacts to the pitman arm shaft support holes, and at pitman arm shaft set inside second oil duct, the random position of hydraulic oil from pitman arm shaft of self-hydraulic oil pump is incorporated into second oil duct in the future; And second oil outlet is arranged on pitman arm shaft to be born near the position from the impact of rocking arm; So, can form oil film at the position that takes place between pitman arm shaft and the rocker shaft hole and/or between pitman arm shaft and the pitman arm shaft support holes to impact, utilize formed oil film to absorb between pitman arm shaft and the rocker shaft hole and/or pitman arm shaft and pitman arm shaft support holes between impact; Thereby reduce the vibrations that produce because of impact, thereby reduce noise.
Above-mentioned optimal technical scheme according to the utility model; Owing to be formed with a plurality of annular grooves on the outer circumferential face of pitman arm shaft, perhaps, be formed with a plurality of annular grooves on the internal face of the rocker shaft hole of rocking arm and/or pitman arm shaft support holes; And during from the radially observation of pitman arm shaft; These annular grooves lay respectively at the both sides of the oil outlet of each oil duct, so, increase when annular groove not being set from the resistance of hydraulic oil when flowing through this annular groove of hydraulic-pressure pump; Help the oil film that keeps thicker, the damping effect of oil film can be more obvious.
According to the distribution device shock mitigation system of the utility model, owing to almost do not change existing component configuration relation, also need not extra interpolation component, extra taking up room, therefore, its manufacture cost is very cheap.
According to the utility model, can provide with cheap manufacture cost low noise, driving and riding comfort good, have the internal-combustion engine of high-grade sense and have the vehicle of this internal-combustion engine.
Description of drawings
Fig. 1 is the plan view of formation that schematically shows the utility model first embodiment's distribution device shock mitigation system.
Fig. 2 is the A-A line sectional view of Fig. 1, and it schematically shows the formation of the utility model first embodiment's distribution device shock mitigation system.
Fig. 3 is the B-B line amplification view of Fig. 2, and it schematically shows the formation of the oil film in the utility model first embodiment's the distribution device shock mitigation system.
Fig. 4 schematically shows a variation of the utility model first embodiment's shown in Figure 3 distribution device shock mitigation system.
Fig. 5 is the figure of formation that schematically shows the utility model second embodiment's distribution device shock mitigation system, and it is the sectional view suitable with Fig. 2.
Fig. 6 is the figure of formation that schematically shows the utility model the 3rd embodiment's distribution device shock mitigation system, and it is the sectional view suitable with Fig. 2.
Fig. 7 is the figure of formation that schematically shows the utility model the 4th embodiment's distribution device shock mitigation system, and it is the sectional view suitable with Fig. 2.
Fig. 8 is the figure of a variation that schematically shows the utility model the 4th embodiment's distribution device shock mitigation system, and it is the sectional view suitable with Fig. 2.
Fig. 9 is the figure of formation that schematically shows the utility model the 5th embodiment's distribution device shock mitigation system, and it is the sectional view suitable with Fig. 2.
Embodiment
First embodiment
Below, be example with the overhead cam rocker arm body, with reference to Fig. 1～Fig. 4 explanation distribution device shock mitigation system relevant with first embodiment of the utility model.Fig. 1～Fig. 3 schematically shows the formation of the utility model first embodiment's distribution device shock mitigation system; Fig. 1 is a plan view; Fig. 2 is the A-A line sectional view of Fig. 1, and Fig. 3 is the B-B line amplification view of Fig. 2, and Fig. 4 representes the utility model first embodiment's a variation.
As depicted in figs. 1 and 2, the distribution device shock mitigation system 10 of the utility model comprises pitman arm shaft 11 and rocking arm 12, and rocking arm 12 is provided with rocker shaft hole 121, and pitman arm shaft 11 is inserted in the rocker shaft hole 121 of rocking arm 12, and rocking arm 12 can rotate around pitman arm shaft 11.The end of pitman arm shaft 11 is inserted in and is able to supporting in the pitman arm shaft support holes 131 that forms on the cylinder block 13 of internal-combustion engine for example.The left end of rocking arm 12 links to each other with the valve 14 of internal-combustion engine among Fig. 1, and under the elastic force effect of valve spring 15, the right-hand member of rocking arm 12 is resisted against on the cam 16.When internal combustion engine, the rotation of cam 16 promotes rocking arm 12 and rotates around pitman arm shaft 11, causes the left end of rocking arm 12 among Fig. 1 to overcome the resistance of valve spring 15 and opens, closes.Along with the high frequency of valve 14 is opened, pitman arm shaft 11 bears from impact rocking arm 12, direction shown in the arrow F1, and the position of being impacted is shown in the m among Fig. 3.
The inside of pitman arm shaft 11 offers hydraulic pressure oil duct 110, and the filler opening 111 of this hydraulic pressure oil duct 110 is located on the end face 116 in left side among for example Fig. 2 of pitman arm shaft 11, and its oil outlet 112 is located near the position m that bears from the impact of rocking arm 12.Hydraulic oil P from not shown oil pump arrives end face 116, gets into hydraulic pressure oil duct 110 through filler opening 111, and the oil outlet 112 from hydraulic pressure oil duct 110 flows out then.The oil film M1 that formation is represented, represented with grid line in the enlarged view of Fig. 3 with thick line in like Fig. 2 between near pitman arm shaft 11 and the rocker shaft hole 121 of the hydraulic oil that flows out oil outlet 112.
The outer circumferential face of pitman arm shaft 11 is provided with the annular groove 115 of pairing left and right; During from the radially observation of pitman arm shaft 11, the annular groove 115 of pairing left and right lay respectively at hydraulic pressure oil duct 110 oil outlet 112 both sides and to be positioned at the end face of rocker shaft hole 121 of rocking arm 12 inboard.Like this, when hydraulic oil formed oil film M1 between pitman arm shaft 11 and rocker shaft hole 121, a part of hydraulic oil can be stored in the annular groove 115.When the impact of arrow F1 direction took place, oil film M1 was squeezed, and hydraulic oil can flow to each opening and place, slit.Increase because the existence of annular groove 115, the resistance when hydraulic oil flows through this annular groove 115 are compared to when annular groove 115 is set, help the oil film M1 that keeps thicker, the damping of oil film M1, noise reduction can be more obvious.
Perhaps; As shown in Figure 4; The outer circumferential face at pitman arm shaft 11 is not provided with annular groove, and the annular groove 123 of formation pairing left and right also is fine on the internal face 122 of rocker shaft hole 121, and is same; During from the radially observation of pitman arm shaft 11, the annular groove 123 of pairing left and right lays respectively at the both sides of said oil outlet 112.
Certainly, also can be as required, a plurality of annular grooves 115 are set and form a plurality of annular grooves 123 at the outer circumferential face of pitman arm shaft 11 at the internal face 122 of rocker shaft hole 121.
In addition; As required; In order to limit pitman arm shaft 11, can consider that kind shown in right side among Fig. 2, thereby carry out spacing with respect to combinations such as cylinder block 13 to pitman arm shaft 11 pitman arm shaft 11 as its supporting mass with bolt 17 and nut 18 with respect to its supporting mass cylinder block 13 rotations such as grade.Notice that 18 restrictions of bolt 17 and nut pitman arm shaft 11 allows it along the above-below direction slide relative among Fig. 4 with respect to the rotation of cylinder block 13 grades.
Though pitman arm shaft 11 is bearing on the cylinder block 13 in the present embodiment, in the practical application, can as required pitman arm shaft be bearing on the random position of internal-combustion engine aptly.
In addition, though in the present embodiment, the hydraulic pressure oil duct is roughly L shaped; But when using, can be designed to arbitrary shape according to actual conditions; For example, bias type, irregular curve type, the position that is provided with of filler opening does not have special restriction yet in addition; It both can be arranged on the end face of pitman arm shaft, also can be arranged on the outer circumferential face of pitman arm shaft 11.In addition; Be provided with under the situation of a plurality of oil outlets; The quantity of a plurality of oil outlets, direction and arrangement mode thereof also can be set arbitrarily as required; For example, these oil outlets can axially being arranged in a row or more than two rows, needing only and satisfy the condition that can between the position that is hit on pitman arm shaft and the pitman arm shaft, form oil film along pitman arm shaft.
According to present embodiment; Though rocking arm impacts to pitman arm shaft during internal combustion engine; But owing near the position that is hit, be provided with the oil outlet of hydraulic pressure oil duct, thus can between the member of near rocking arm the oil outlet and these two generation impacts of pitman arm shaft, form oil film, thus the impact that therefore can utilize formed oil film to absorb between pitman arm shaft and the rocker shaft hole reduces vibrations; Thereby the propagation of vibrations outside machine in the reduction internal-combustion engine, the generation that alleviates noise.
In addition; According to the preferred version of present embodiment,, perhaps on the internal face of rocker shaft hole, annular groove is set owing to annular groove is set at the outer circumferential face of pitman arm shaft; So; Increase when annular groove not being set from the resistance of hydraulic oil when flowing through annular groove of hydraulic-pressure pump, help the oil film that keeps thicker, the damping effect of oil film can be more obvious.
Second embodiment
Below with reference to the distribution device shock mitigation system of Fig. 5 explanation according to the utility model second embodiment.
Fig. 5 is the figure of formation that schematically shows the utility model second embodiment's distribution device shock mitigation system, is the figure suitable with the sectional view of Fig. 2.The present embodiment and first embodiment's formation is basic identical, its difference only be hydraulic pressure oil duct and oil outlet that the position is set is different.Below, only the present embodiment and first embodiment's difference is described and omit being repeated in this description other parts.
As shown in Figure 5, the two end part of pitman arm shaft 11 are bearing in the pitman arm shaft support holes 131 of the pairing left and right that is formed on the cylinder block 13.During internal combustion engine, pitman arm shaft 11 bears from impact rocking arm 12, direction shown in the arrow F1, the pitman arm shaft 11 that the is impacted inwall of the pitman arm shaft support holes 131 on the countercylinder body 13 impact that produces arrow F2 direction then.On the cylinder block 13 of internal-combustion engine; Offer the hydraulic pressure oil duct 130 of pairing left and right corresponding to the pitman arm shaft support holes 131 of pairing left and right, the oil outlet 132 of the hydraulic pressure oil duct 130 of this pairing left and right respectively towards 131 that born with the pitman arm shaft support holes, from the roughly opposite direction of the impact direction F2 of pitman arm shaft 11.Hydraulic oil P from not shown oil pump gets into hydraulic pressure oil duct 130 backs from oil outlet 132 outflows, so the hydraulic oil that flows out forms oil film M2 separately respectively between near pitman arm shaft 11 each oil outlet 132 and pitman arm shaft support holes 131.
In addition; Similar with first embodiment; Corresponding to the oil outlet on the pitman arm shaft support holes 131 132, on the outer circumferential face of pitman arm shaft 11, be respectively equipped with the annular groove 117 of pairing left and right in the both sides of each oil outlet 132; During from the radially observation of pitman arm shaft 11, the annular groove 117 of pairing left and right lay respectively at hydraulic pressure oil duct 130 oil outlet 132 both sides and to be positioned at the end face of pitman arm shaft support holes 131 inboard; Perhaps, on the inwall of each pitman arm shaft support holes 131, form the annular groove (not shown) of pairing left and right respectively.The function of these annular grooves is all identical with first embodiment, repeats no more here.
According to present embodiment; Though pitman arm shaft impacts to the pitman arm shaft support holes during internal combustion engine; But owing near the position that is hit, be provided with the oil outlet of hydraulic pressure oil duct, so can between the member of near pitman arm shaft the oil outlet and these two generation impacts of pitman arm shaft support holes, form oil film, this oil film can absorb the impact of pitman arm shaft and pitman arm shaft support holes and reduce the vibrations that produce because of impacting; Thereby the propagation of vibrations outside machine in the blocking-up internal-combustion engine, the generation that alleviates noise.
The 3rd embodiment
Below with reference to the distribution device shock mitigation system of Fig. 6 explanation according to the utility model the 3rd embodiment.
Fig. 6 is the figure of formation that schematically shows the utility model the 3rd embodiment's distribution device shock mitigation system, is the figure suitable with the sectional view of Fig. 2.The present embodiment and first embodiment's formation is basic identical, its difference with first embodiment be oil outlet that the position is set is different.Below, only the present embodiment and first embodiment's difference is described and omit being repeated in this description other parts.
As shown in Figure 6, the two end part of pitman arm shaft 11 are bearing in the pitman arm shaft support holes 131 of the pairing left and right that is formed on the cylinder block 13.During internal combustion engine, pitman arm shaft 11 bears from impact rocking arm 12, direction shown in the arrow F1, the pitman arm shaft 11 that the is impacted inwall of the pitman arm shaft support holes 131 on the countercylinder body 13 impact that produces direction shown in the arrow F2 then.Identical with first embodiment; In the present embodiment; Offer hydraulic pressure oil duct 110 in the inside of pitman arm shaft 11; The filler opening 111 of this hydraulic pressure oil duct 110 is located on the end face 116 in left side among for example Fig. 2 of pitman arm shaft 11, and just its oil outlet 118 is provided with pairing left and right corresponding to the pitman arm shaft support holes 131 of pairing left and right among Fig. 6, and the oil outlet 118 of this pairing left and right is that born, roughly consistent from the impact direction F2 of pitman arm shaft 11 with pitman arm shaft support holes 131 respectively.
So; During internal combustion engine; Hydraulic oil P from not shown oil pump gets into oil outlet 118 outflows of hydraulic pressure oil duct 110 backs from hydraulic pressure oil duct 110 through filler opening 111, and the hydraulic oil of outflow forms oil film M2 between near pitman arm shaft the oil outlet 118 11 and pitman arm shaft support holes 131.
The 4th embodiment
Below with reference to the distribution device shock mitigation system of Fig. 7 explanation according to the utility model the 4th embodiment.
Fig. 7 is the figure of formation that schematically shows the utility model the 4th embodiment's distribution device shock mitigation system, is the figure suitable with the sectional view of Fig. 2.Constituting of present embodiment and first embodiment (with reference to Fig. 2) and second embodiment (with reference to Fig. 5) is basic identical, and its difference is that being provided with of the hydraulic pressure oil duct that pitman arm shaft is inner is different.Below, only present embodiment and first embodiment and second embodiment's difference is described and omit being repeated in this description other parts.
As shown in Figure 7; Identical with second embodiment; On the cylinder block 13 of internal-combustion engine; Offer the hydraulic pressure oil duct 130 of pairing left and right corresponding to the pitman arm shaft support holes 131 of pairing left and right, the oil outlet 132 of the hydraulic pressure oil duct 130 of this pairing left and right respectively towards 131 that born with the pitman arm shaft support holes, from the roughly opposite direction of the impact direction F2 of pitman arm shaft 11.In addition; Similar with first embodiment; The oil outlet 112 that offers hydraulic pressure oil duct 110 and this hydraulic pressure oil duct 110 in the inside of pitman arm shaft 11 is located at and bears near the position m of the impact of rocking arm 12 (with reference to Fig. 3); Different is, the filler opening 119 of this hydraulic pressure oil duct 110 be pairing left and right be opened in cylinder block 13 on the oil outlet 132 of hydraulic pressure oil duct 130 corresponding locational, and filler opening 119 is interconnected with oil outlet 132.
Like this; Flow to the filler opening 119 of the hydraulic pressure oil duct 110 of pitman arm shaft 11 inside at entering hydraulic pressure oil duct 130 after by its oil outlet 132 from the hydraulic oil P of not shown oil pump; This hydraulic oil moves ahead in entering hydraulic pressure oil duct 110 continued; Finally the oil outlet 112 from hydraulic pressure oil duct 110 flows out, so the hydraulic oil that flows out forms oil film M1 between near pitman arm shaft the oil outlet 112 11 and rocker shaft hole 121.And hydraulic oil is near the filler opening 119 of oil outlet of the hydraulic pressure oil duct 130 of flowing through 132 and hydraulic pressure oil duct 110 time, thereby also can enter between oil outlet 132 and the filler opening 119 near formation oil film M2 it.
In addition; Hydraulic circuit in the present embodiment also can form like this; That is: being divided into two-way after getting in the hydraulic pressure oil duct 110 on the other side from from the hydraulic pressure oil duct 130 of pairing left and right one of the hydraulic oil P of not shown oil pump advances; One the road flows out from oil outlet 112, and flow out another relative hydraulic pressure oil duct 110 and this hydraulic pressure oil duct 130 backs flowed through in the hydraulic pressure oil duct 130 with pairing left and right in another road.At this moment, the filler opening 119 of the latter's hydraulic pressure oil duct 110 plays a part oil outlet in fact, and the oil outlet 132 of the latter's hydraulic pressure oil duct 130 plays a part filler opening in fact.
In addition; Fig. 8 shows the another one variation of present embodiment; That is: the hydraulic pressure oil duct 130 in left side is communicated with the hydraulic pressure oil duct 110 of pitman arm shaft 11; The filler opening 111 of this hydraulic pressure oil duct 110 is communicated with the oil outlet 132 of the hydraulic pressure oil duct 130 in left side, and the oil outlet 112 of this hydraulic pressure oil duct 110 is located near the position m (referring to Fig. 3) that pitman arm shaft 11 bears the impact of rocking arm 12.Hydraulic oil P from not shown oil pump gets into oil outlet 132 outflows of hydraulic pressure oil duct 130 backs of pairing left and right from this hydraulic pressure oil duct 130, thereby between near pitman arm shaft 11 this oil outlet 132 and pitman arm shaft support holes 131, forms oil film M2 separately; And the hydraulic oil flow in the hydraulic pressure oil duct 130 in left side is continuously introduced to after oil outlet 132 in the hydraulic pressure oil duct 110 of pitman arm shaft 11 and flow out from the oil outlet 112 of this hydraulic pressure oil duct 110, thus between near pitman arm shaft 11 this oil outlet 112 and rocker shaft hole 121 formation oil film M1.
Certainly, in the present embodiment, the filler opening 119 of the hydraulic circuit 110 on the pitman arm shaft 11 also can only be provided with one and be not provided with a pair ofly, and this situation is the equal of in fact to be combined togather preceding text illustrated first embodiment and second embodiment.
According to present embodiment, owing to can the vibrations of internal combustion engines be blocked to 2 places that are delivered in of engine body exterior, so can further improve the damping effect of the utility model.
The 5th embodiment
Below with reference to the distribution device shock mitigation system of Fig. 9 explanation according to the utility model the 5th embodiment.
Fig. 9 is the figure of formation that schematically shows the utility model the 5th embodiment's distribution device shock mitigation system, is the figure suitable with the sectional view of Fig. 2.Present embodiment and the 3rd embodiment's (with reference to Fig. 6) formation is basic identical, and its difference is that being provided with of the hydraulic pressure oil duct that pitman arm shaft is inner is different.Below, only present embodiment and the 3rd embodiment's difference is described and omit being repeated in this description other parts.
As shown in Figure 8; In the present embodiment; the inner hydraulic pressure oil duct 110 of pitman arm shaft 11 also is provided with another oil outlet 112 except being provided with two oil outlets 118 identical with the 3rd embodiment, this oil outlet 112 is located near the position m (referring to Fig. 3) that bears from the impact of rocking arm 12.Hydraulic oil P from not shown oil pump arrives end face 116, gets into hydraulic pressure oil duct 110 through filler opening 111, and two oil outlets 118 from hydraulic pressure oil duct 110 flow out with another oil outlet 112 then.The hydraulic oil that flows out forms oil film M2 separately respectively between near pitman arm shaft 11 each oil outlet 118 and pitman arm shaft support holes 131, and between near pitman arm shaft the oil outlet 112 11 and rocker shaft hole 121, forms oil film M1.
More than, the several typical embodiment of the utility model is illustrated, but this and do not mean that the utility model only is limited to the foregoing description.Those of ordinary skills can carry out various design alterations according to actual conditions, comprise above-mentioned each technical characteristics and technological scheme are made up, and these changes and combination all are included in the scope of the utility model.
Claims (10)
1. a distribution device shock mitigation system (10) comprises pitman arm shaft (11) and is rotatably supported in the rocking arm (12) on this pitman arm shaft (11), it is characterized in that,
The inside of said pitman arm shaft (11) is provided with oil duct (110), and said oil duct (110) has at least one oil outlet (112), and said oil outlet (112) is located at said pitman arm shaft (11) and bears near the position from the impact of said rocking arm (12).
2. distribution device shock mitigation system according to claim 1 (10); It is characterized by; Be formed with a plurality of annular grooves (115) on the outer circumferential face of said pitman arm shaft (11); And during from the radially observation of said pitman arm shaft (11), said annular groove (115) lay respectively at said oil duct (110) said oil outlet (112) both sides and be positioned at the inboard of rocker shaft hole (121) end face of said rocking arm (12); Be formed with a plurality of annular grooves (123) on the internal face of the said rocker shaft hole (121) of perhaps said rocking arm (12), and during from the radially observation of said pitman arm shaft (11), said annular groove (123) lays respectively at the both sides of said oil outlet (112).
3. a distribution device shock mitigation system (10) comprises pitman arm shaft (11) and is rotatably supported in the rocking arm (12) on this pitman arm shaft (11), and the two end part of said pitman arm shaft (11) are bearing in the pitman arm shaft support holes (131) of internal-combustion engine, it is characterized in that,
Said internal-combustion engine is provided with oil duct (130), and said oil duct (130) has at least one oil outlet (132), and said oil outlet (132) is located near the position that said pitman arm shaft (11) impacts to said pitman arm shaft support holes (131).
4. a distribution device shock mitigation system (10) comprises pitman arm shaft (11) and is rotatably supported in the rocking arm (12) on this pitman arm shaft (11), and the two end part of said pitman arm shaft (11) are bearing in the pitman arm shaft support holes (131) of internal-combustion engine, it is characterized in that,
The inside of said pitman arm shaft (11) is provided with oil duct (110), and said oil duct (110) has at least one oil outlet (118), and said oil outlet (118) is located near the position that said pitman arm shaft (11) impacts to said pitman arm shaft support holes (131).
5. according to claim 3 or 4 described distribution device shock mitigation systems (10); It is characterized by; The outer circumferential face of said pitman arm shaft (11) is provided with a plurality of annular grooves (115); And during from the radially observation of said pitman arm shaft (11), it is inboard that said annular groove (115) lays respectively at the end face of both sides and said pitman arm shaft support holes (131) of said oil outlet (132) of said oil duct (130); Perhaps, the internal face of said pitman arm shaft support holes (131) is provided with a plurality of annular grooves (117), and during from the radially observation of said pitman arm shaft (11), said annular groove (117) lays respectively at the both sides of said oil outlet (132).
6. a distribution device shock mitigation system (10) comprises pitman arm shaft (11) and is rotatably supported in the rocking arm (12) on this pitman arm shaft (11), and the two end part of said pitman arm shaft (11) are bearing in the pitman arm shaft support holes (13) of internal-combustion engine, it is characterized in that,
Said internal-combustion engine is provided with first oil duct (130), and said first oil duct has at least one first oil outlet, and said first oil outlet is located near the position that said pitman arm shaft (11) impacts to said pitman arm shaft support holes (131),
Said pitman arm shaft (11) inside is provided with second oil duct (110); Said second oil duct is communicated with at least one said first oil outlet of said first oil duct (130); Said second oil duct has at least one second oil outlet, and said second oil outlet is located at said pitman arm shaft (11) and bears near the position of the impact of said rocking arm (12) and/or near said pitman arm shaft (11) the position that said pitman arm shaft support holes (131) is impacted.
7. a distribution device shock mitigation system (10) comprises pitman arm shaft (11) and is rotatably supported in the rocking arm (12) on this pitman arm shaft (11), and the two end part of said pitman arm shaft (11) are bearing in the pitman arm shaft support holes (131) of internal-combustion engine, it is characterized in that,
The inside of said pitman arm shaft (11) is provided with oil duct (110), and said oil duct (110) has: at least one first oil outlet (118), said first oil outlet (118) are located near the position that said pitman arm shaft (11) impacts to said pitman arm shaft support holes (131); At least one second oil outlet (112), said second oil outlet (112) are located at said pitman arm shaft (11) and bear near the position from the impact of said rocking arm (12).
8. according to claim 6 or 7 described distribution device shock mitigation systems (10); It is characterized by; On the outer circumferential face of said pitman arm shaft (11), be formed with a plurality of first annular grooves; During from the radially observation of said pitman arm shaft (11), said first annular groove lays respectively at the both sides of said first oil outlet and/or the both sides of said second oil outlet;
And/or, on the internal face of said rocker shaft hole (121), be formed with a plurality of second annular grooves, during from the radially observation of said pitman arm shaft (11), said second annular groove lays respectively at the both sides of said second oil outlet;
And/or, on the internal face of said pitman arm shaft support holes (131), be formed with a plurality of the 3rd annular grooves, during from the radially observation of said pitman arm shaft (11), said the 3rd annular groove lays respectively at the both sides of said second oil outlet.
9. an internal-combustion engine is characterized by, and its distribution device has any described distribution device shock mitigation system (10) in the claim 1 to 8.
10. a vehicle is characterized by, and it has the described internal-combustion engine of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220094314 CN202596826U (en) | 2012-03-04 | 2012-03-04 | Damping system for air distribution mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220094314 CN202596826U (en) | 2012-03-04 | 2012-03-04 | Damping system for air distribution mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022030219A1 (en) * | 2020-08-07 | 2022-02-10 | ヤンマーホールディングス株式会社 | Internal combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022030219A1 (en) * | 2020-08-07 | 2022-02-10 | ヤンマーホールディングス株式会社 | Internal combustion engine |
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