CN104343907A - Tensioner pushing device - Google Patents
Tensioner pushing device Download PDFInfo
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- CN104343907A CN104343907A CN201410360096.2A CN201410360096A CN104343907A CN 104343907 A CN104343907 A CN 104343907A CN 201410360096 A CN201410360096 A CN 201410360096A CN 104343907 A CN104343907 A CN 104343907A
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- China
- Prior art keywords
- mentioned
- stretcher
- thrust piece
- supporting cylinder
- wedge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention provides a tensioner pushing device. In a supporting cylinder installed on a main body of an internal combustion engine, a pushing part the front end of which is contacted with a tensioner is elastically pressed in the direction in which the tensioner is pressed to an annular transmission belt and can be held in a sliding manner, a limiting part is arranged at one side of the pushing part on the supporting cylinder, a wedge part is inserted between the limiting part and the pushing part, and the pushing force applying scope and the application scope of the tensioner pushing device can be increased. A contact surface (53), of the wedge part (40), facing the pushing part (38) and a contact surface (54), of the pushing part (38), facing the wedge part (40) from a flat surface which is parallel to the moving direction of the pushing part (38), and a contact surface, of the wedge part (40), facing the limiting part (39) forms a wedge surface (58) which is crossed to the moving direction of the pushing part (38) in an inclined manner.
Description
Technical field
The present invention relates to stretcher ejector apparatus (tensioner lifter), in the supporting cylinder of fuselage main body being installed on internal-combustion engine, so that thrust piece can be maintained to being suppressed to the direction that annular driving band pushes by stretcher the mode also can slided, the front end of this thrust piece contacts with the above-mentioned stretcher extended along above-mentioned annular driving band, between limiting part and above-mentioned thrust piece, be inserted with to above-mentioned thrust piece towards the contrary direction of the movement direction of above-mentioned stretcher side by the wedge parts suppressed, wherein above-mentioned limiting part is arranged on above-mentioned supporting cylinder in the side of above-mentioned thrust piece.
Background technique
Following stretcher ejector apparatus is known to: the thrust piece that front end abuts with the stretcher extended along the cam chain as annular driving band in patent documentation 1, suppressed to by stretcher to the direction that cam chain pushes, in order to limit returning of thrust piece, between the roller in fixed position and above-mentioned thrust piece, wedge parts are sandwiched.
Prior art document
Patent documentation
Patent documentation 1: Japan Patent No. 4030392 publication
Summary of the invention
In the structure disclosed in above-mentioned patent documentation 1, the surface of contact towards above-mentioned wedge parts of thrust piece is formed as with along with the wedge surface that the mode close with the central axis of above-mentioned thrust piece tilts relative to the movement direction of above-mentioned thrust piece away from above-mentioned stretcher, distance between above-mentioned wedge surface and above-mentioned roller changes according to the movement of above-mentioned thrust piece, when above-mentioned thrust piece moves in the mode pushing above-mentioned stretcher according to the slackness of cam chain, expand between above-mentioned wedge surface and above-mentioned roller, wedge parts move to fill up the gap produced along with this expansion to the opposite direction of above-mentioned stretcher, carry out above-mentioned thrust piece thus to the restriction returning to side.But, when when increasing along with the amount of movement of thrust piece on the direction pushing stretcher, the amount of movement of wedge parts increases, the amount of suppressing of suppressing the spring of wedge parts reduces, and wedge parts is pressed to the power change on thrust piece, frictional force between wedge parts and thrust piece also changes, and wedge effect reduces.Its result is, produces the scope that stretcher ejector apparatus cannot play abundant thrust, causes the using scope of stretcher ejector apparatus to reduce.
The present invention researches and develops in view of the above circumstances, and the scope that its object is to provide a kind of expansion can play thrust also can increase the stretcher ejector apparatus of using scope.
To achieve these goals, the present invention is a kind of stretcher ejector apparatus, in supporting cylinder in the fuselage main body being installed on internal-combustion engine, the thrust piece that front end contacts with the stretcher that annularly driving belt extends, to above-mentioned stretcher being suppressed to the direction that above-mentioned annular driving band pushes and can being kept slidably, be inserted with between limiting part with above-mentioned thrust piece to above-mentioned thrust piece towards the contrary direction of the movement direction of above-mentioned stretcher side by the wedge parts suppressed, wherein this limiting part is arranged on above-mentioned supporting cylinder in the side of above-mentioned thrust piece, the 1st of this stretcher ejector apparatus is characterized as, the surface of contact towards above-mentioned thrust piece of above-mentioned wedge parts and the surface of contact towards above-mentioned wedge parts of above-mentioned thrust piece are formed as the tabular surface parallel with the movement direction of above-mentioned thrust piece, the surface of contact towards above-mentioned limiting part of above-mentioned wedge parts is formed as the wedge surface tilted in the mode of intersecting sideling relative to the movement direction of above-mentioned thrust piece.
In addition, the of the present invention 2nd is characterized as, and on the basis of the structure of the 1st feature, also has escapement, for by above-mentioned thrust piece from the state that above-mentioned supporting cylinder is pulled down, prevent above-mentioned wedge parts from coming off from above-mentioned supporting cylinder.
Of the present invention 3rd is characterized as, on the basis of the structure of the 2nd feature, form the engaging teat at least partially of above-mentioned escapement to be arranged on integratedly on above-mentioned wedge parts in the mode engaged with above-mentioned limiting part from the state that above-mentioned supporting cylinder is pulled down by above-mentioned thrust piece.
Of the present invention 4th is characterized as, on the basis of the structure of the 3rd feature, above-mentioned limiting part is the roller that axle is bearing on above-mentioned supporting cylinder, above-mentioned engagement portion is formed as the arc-shaped that can engage with above-mentioned roller, and above-mentioned supporting cylinder is formed the recess that the front end of the above-mentioned wedge parts rotated for engaging with above-mentioned roller along with above-mentioned engaging teat is chimeric.
Of the present invention 5th is characterized as, on the basis of the structure of the 2nd feature, above-mentioned supporting cylinder is provided with a pair wall portion of the both sides being configured in above-mentioned wedge parts integratedly, above-mentioned escapement is made up of projecting teat on above-mentioned wedge parts, wherein, this teat is outstanding from the side of these wedge parts to side also can engage with above-mentioned wall portion.
Of the present invention 6th is characterized as, on the basis of the structure of the 2nd feature, above-mentioned escapement makes engaging portion and above-mentioned wedge parts arrange continuously integratedly and form, and wherein, is formed with the inserting hole interted for above-mentioned limiting part between this engaging portion and above-mentioned wedge parts.
Of the present invention 7th is characterized as, on the basis of arbitrary structure of the 1st ~ 6th feature, to arrange wedge spring to above-mentioned thrust piece to suppress above-mentioned wedge parts mode towards the direction that the movement direction of above-mentioned stretcher side is contrary between Spring holder and this wedge parts, the Spring holder of this wedge spring of support with determine circumferential position mode setting-in, be fixed on the periphery, end of above-mentioned stretcher side of above-mentioned supporting cylinder.
Of the present invention 8th is characterized as, on the basis of the structure of the 7th feature, above-mentioned Spring holder has integratedly and is formed with lower part: annulus, it has the spring bearing for the above-mentioned wedge spring of support in a part for circumference, and the end of above-mentioned stretcher side around above-mentioned supporting cylinder; With restriction teat, it is given prominence to the inside from the inner circumferential many places of this annulus, and on the periphery, end of the above-mentioned stretcher side of above-mentioned supporting cylinder, the axial direction along above-mentioned supporting cylinder is formed extended at both sides many grooves embedded for above-mentioned restriction teat.
And the of the present invention 9th is characterized as, on the basis of arbitrary structure of the 1st ~ 8th feature, at least one party of the surface of contact of above-mentioned wedge parts and above-mentioned thrust piece is fixed with the facing material for improving frictional force.
Invention effect
According to the 1st feature of the present invention, wedge parts and the surface of contact of thrust piece are the tabular surfaces parallel with the movement direction of thrust piece, the surface of contact towards limiting part of wedge parts is the wedge surfaces tilted in the mode of intersecting sideling relative to the movement direction of thrust piece, therefore, no matter whether thrust piece moves, and the distance between the surface of contact towards wedge parts of thrust piece and limiting part is all fixing.Therefore, even if thrust piece moves, wedge parts also can not move, the power that wedge parts are pressed on thrust piece is also fixed, frictional force between wedge parts and thrust piece is fixed, and can expand the scope that stretcher ejector apparatus can play thrust, increases the using scope of stretcher ejector apparatus.
In addition, according to the 2nd feature of the present invention, prevent wedge parts from coming off from supporting cylinder under the state pulling down thrust piece by escapement, the raising of assembling performance and maintainability can be realized.
According to the 3rd feature of the present invention, being made up of the engaging teat be arranged on integratedly on wedge parts at least partially of escapement, therefore, it is possible to avoid forming escapement with increasing amount of parts.
According to the 4th feature of the present invention, engaging teat is formed as arc-shaped in the mode that can engage with the roller as limiting part, when when engaging with roller, wedge parts rotate, the front end of these wedge parts is fitted in the recess of supporting cylinder, therefore, engage teat to come off from roller thus coming off of wedge parts can be prevented more reliably.
According to the 5th feature of the present invention, to engage with wall portion by making the teat outstanding to side from the side of wedge parts and prevent coming off of wedge parts, wherein, this wall portion is configured in the both sides of wedge parts and is arranged on supporting cylinder, therefore, it is possible to avoid forming escapement with increasing amount of parts.
According to the 6th feature of the present invention, limiting part interts in inserting hole, wherein this inserting hole be formed in wedge parts and and the engaging portion that arranges continuously integratedly of these wedge parts between, therefore, it is possible to avoid forming escapement with increasing amount of parts.
According to the 7th feature of the present invention, support to the Spring holder of the wedge spring that wedge parts suppress with determine circumferential position mode setting-in, be fixed on the periphery, end of stretcher side of supporting cylinder, therefore, by utilizing supporting cylinder, amount of parts ground keep-spring holder can not be increased.
According to the 8th feature of the present invention, Spring holder has integratedly: annulus, and it is around the end of the stretcher side of supporting cylinder; With restriction teat, it is given prominence to the inside from the inner circumferential many places of this annulus, be formed at supporting cylinder stretcher side periphery, end and be embedded with restriction teat in many grooves extended along the axial direction of supporting cylinder, therefore, it is possible to Spring holder is installed on supporting cylinder with the spline of simple constitution realization Spring holder.
And, according to the 9th feature of the present invention, at least one party of the surface of contact of wedge parts and thrust piece is fixed with facing material, therefore, it is possible to improve the frictional force between wedge parts and thrust piece, the thrust that thrust piece is pushed back can be improved.
Accompanying drawing explanation
Fig. 1 is the longitudinal cross-sectional side view of the major component of the internal-combustion engine of the 1st mode of execution.
Fig. 2 is the amplification longitudinal section of stretcher ejector apparatus.
Fig. 3 is the 3-3 line sectional view of Fig. 2.
Fig. 4 is the plan view of Spring holder.
Fig. 5 represents thrust piece from the sectional view corresponding with Fig. 2 the state that supporting cylinder is pulled down.
Fig. 6 is the longitudinal section of the stretcher ejector apparatus of the 2nd mode of execution.
Fig. 7 is the 7-7 line sectional view of Fig. 6.
Fig. 8 is the plan view of Spring holder.
Fig. 9 is the longitudinal section of the stretcher ejector apparatus of the 3rd mode of execution.
Figure 10 is the 10-10 line sectional view of Fig. 9.
Figure 11 is the longitudinal section of the stretcher ejector apparatus of the 4th mode of execution.
Figure 12 is the longitudinal section of the stretcher ejector apparatus of the 5th mode of execution.
Figure 13 is the longitudinal section of the stretcher ejector apparatus of the 6th mode of execution.
Description of reference numerals
15 fuselage main bodys
25 as the cam chain of annular driving band
35 stretchers
36A, 36B, 36C, 36D, 36E, 36F stretcher ejector apparatus
37 supporting cylinders
38,82 thrust pieces
39 as the roller of limiting part
40 wedge parts
53,54,84 surface of contact
58 wedge surfaces
60 wedge springs
61,71 Spring holder (spring retainer)
61a, 71a annulus
61aa, 71aa spring bearing
61b, 71b limit teat
62 grooves
65,73,76 escapements
66 engaging teats
67 recesses
72 wall portion
74 teats
77 inserting holes
78 engaging portions
80 facing materials
E internal-combustion engine
Embodiment
Referring to accompanying drawing, embodiments of the present invention are described.
With reference to Fig. 1 ~ Fig. 5, the 1st mode of execution of the present invention is described, first, in FIG, this internal-combustion engine E is mounted on such as two-wheeled motor vehicle, its fuselage main body 15 has: crank box 17, and it rotatably supports crankshaft 16, and this crankshaft 16 has the axis in the overall width direction along two-wheeled motor vehicle; Cylinder block 18, it is surface thereof being combined with above-mentioned crank box 17 forward; Cylinder head 19, it is combined with this cylinder block 18; With cylinder head cover 20, it is combined with this cylinder head 19.
The camshaft 21 forming a part for valve mechanism has the axis parallel with above-mentioned crankshaft 16, and be rotatably bearing on said cylinder lid 19, between above-mentioned crankshaft 16 and above-mentioned camshaft 21, be provided with the timing drive mechanism 22 with the reduction speed ratio of 1/2, the rotating power of crankshaft 16 being delivered to camshaft 21 side.This timing drive mechanism 22 is made up of the driving sprocket wheel 23 be fixed on above-mentioned crankshaft 16, the driven sprocket 24 being fixed on an end of above-mentioned camshaft 21 and the cam chain 25 as annular driving band be wound around on driving sprocket wheel 23 and driven sprocket 24.In addition, above-mentioned crank box 17, said cylinder body 18 and said cylinder lid 19 are provided with the cam chain path 26 for above-mentioned cam chain 25 movement, with the rotation of above-mentioned crankshaft 16 correspondingly, above-mentioned cam chain 25 moves along the movement direction 27 shown in arrow.
The side of being drawn by driving sprocket wheel 23 in cam chain 25 between above-mentioned driving sprocket wheel 23 with above-mentioned driven sprocket 24 and the periphery of advancing side have abutted cam chain guide 28.This cam chain guide 28 is by having suitable stiff and flexible synthetic resin to be formed towards cam chain 25 side in roughly arc mode, and crankshaft 16 side end of cam chain guide 28 is fitted together to, be bearing in the supporting recess 29 that is openly arranged at upward on crank box 17.Be formed with the supporting surface 30 of the opposition side towards above-mentioned cam chain 25 in camshaft 21 side of above-mentioned cam chain guide 28, cylinder head 19 is provided with the abutting support 31 abutted with this supporting surface 30.In addition, at cam chain guide 28 by the intermediate portion both sides of above-mentioned supporting surface 30, being arranged in the prominent part of cross section is integratedly circular projection 32, at cylinder block 18 towards on the junction plane of cylinder head 19, be provided with and the location indentations 33 of location chimeric for projection 32.
In addition, in cam chain 25 between above-mentioned driving sprocket wheel 23 and above-mentioned driven sprocket 24 from the periphery of the side that driving sprocket wheel 23 is sent and slack-side, sliding contact has stretcher 35, this stretcher 35 is along the slack-side of above-mentioned cam chain 25, and an end can be bearing on the cylinder head 19 in fuselage main body 15 via bolt 34 rotationally, by being arranged on the stretcher ejector apparatus 36A on the cylinder block 18 in above-mentioned fuselage main body 15, by above-mentioned stretcher 35 to above-mentioned cam chain 25 thruster pressure.
Simultaneously with reference to Fig. 2, above-mentioned stretcher ejector apparatus 36A has: supporting cylinder 37, and it is arranged on the said cylinder body 18 of above-mentioned fuselage main body 15; Thrust piece 38, it is suppressed to the direction pushed to above-mentioned cam chain 25 by above-mentioned stretcher 35, and can be maintained slidably retained in above-mentioned supporting cylinder 37; As the roller 39 of limiting part, it is arranged on above-mentioned supporting cylinder 37 in the side of this thrust piece 38; With wedge parts 40, it is suppressed to above-mentioned thrust piece 38 towards the direction that the movement direction of above-mentioned stretcher 35 side is contrary, and is inserted between above-mentioned roller 39 and above-mentioned supporting cylinder 37.
The mounting cylinder portion 42 being formed with mounting hole 41 is arranged on said cylinder body 18 to make its outer end from the mode that cylinder block 18 is given prominence to laterally integratedly, by flange 43 being fastened on multiple bolt 44 outer end in above-mentioned mounting cylinder portion 42, above-mentioned supporting cylinder 37 is arranged on said cylinder body 18 in the mode be interspersed in above-mentioned mounting hole 41, wherein, flange 43 is located on above-mentioned supporting cylinder 37 integratedly in the mode of stretching out from the outside side of the intermediate portion of this supporting cylinder 37.
Above-mentioned supporting cylinder 37 is formed sliding bearing hole 45 and tapped hole 46 coaxially, wherein, this sliding bearing hole 45 make one end at above-mentioned supporting cylinder 37 towards end opening in above-mentioned cam chain path 26, this tapped hole 46 is connected coaxially with the other end in this sliding bearing hole 45 and at the outer end opening of above-mentioned supporting cylinder 37, in above-mentioned tapped hole 46, is screwed with cover 47.
Above-mentioned thrust piece 38 is made up of the cartridge unit 49 of cylindrical shape and the abutment 50 of rubber of the end that is arranged on this cartridge unit 49.On above-mentioned cartridge unit 49, be formed with the spring reception hole 48 from its center axis in length range, above-mentioned abutment 50 is arranged on an end of above-mentioned cartridge unit 49 in the mode of the end closing above-mentioned spring reception hole 48.
Above-mentioned cartridge unit 49 is in the mode making its other end relative with the rubber holding element 51 being connected to above-mentioned cover 47 the inner, can be entrenched in above-mentioned sliding bearing hole 45 slidably, compress between above-mentioned holding element 51 and an end of above-mentioned cartridge unit 49 and be provided with spiral helicine main spring 52, the major part of this main spring 52 is accommodated in above-mentioned spring reception hole 48.That is, above-mentioned thrust piece 38 is to make the abutment 50 of its front end contact with above-mentioned stretcher 35 and by above-mentioned main spring 52 to the mode of being suppressed to the direction that above-mentioned cam chain 25 pushes by this stretcher 35, can be maintained slidably retained in above-mentioned supporting cylinder 37.
Simultaneously with reference to Fig. 3, the surface of contact 54 towards above-mentioned wedge parts 40 of the above-mentioned cartridge unit 49 in the surface of contact 53 towards above-mentioned thrust piece 38 of above-mentioned wedge parts 40 and above-mentioned thrust piece 38 is formed as the tabular surface parallel with the movement direction of above-mentioned thrust piece 38, to the part excision of the periphery of the above-mentioned cartridge unit 49 of cylindrical shape be essentially and be formed flatly, thus form the surface of contact 54 towards above-mentioned wedge parts 40 of thrust piece 38.Cause a part for the circumference of the sidewall wall thickness of the above-mentioned cartridge unit 49 with above-mentioned spring reception hole 48 thinning in order to avoid the formation due to such surface of contact 54, above-mentioned spring reception hole 48 is formed from the center axis of above-mentioned cartridge unit 49 as described above.
On above-mentioned supporting cylinder 37, the slit 55 of a part for the periphery towards the cartridge unit 49 in above-mentioned thrust piece 38 is provided with in the mode extended along its length, further, be provided with integratedly each other across a pair wall portion 56,56 of above-mentioned slit 55 in the mode extended along the length direction of above-mentioned slit 55.Above-mentioned roller 39 is configured between a pair above-mentioned wall portion 56,56, and can be supported rotatably by the axle 57 be arranged between these wall portion 56,56.
Above-mentioned wedge parts 40 are configured between a pair above-mentioned wall portion 56,56, the wedge surface 58 that the mode that the surface of contact towards above-mentioned roller 39 of these wedge parts 40 is formed as intersecting sideling with the movement direction relative to above-mentioned thrust piece 38 tilts.That is, wedge surface 58 is formed obliquely in the mode increased along with the distance towards above-mentioned stretcher 35 side and between above-mentioned thrust piece 38.
Above-mentioned wedge parts 40 by spiral helicine wedge spring 60 to being suppressed towards the direction that the movement direction of above-mentioned stretcher 35 side is contrary with above-mentioned thrust piece 38, this wedge spring 60 is arranged between above-mentioned wedge parts 40 and Spring holder 61, wherein, Spring holder 61 with determine circumferential position mode setting-in, be fixed on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37.
Simultaneously with reference to Fig. 4, above-mentioned Spring holder 61 has integratedly and is formed with lower part: annulus 61a, it has the spring bearing 61aa of the end for the above-mentioned wedge spring 60 of support in a part for circumference, and the end of above-mentioned stretcher 35 side around above-mentioned supporting cylinder 37; With restriction teat 61b, 61b, its inner circumferential many places from this annulus 61a (being 2 in present embodiment) gives prominence to the inside.On the other hand, on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37, the axial direction along above-mentioned supporting cylinder 37 is formed extended at both sides many grooves 62,62 embedded for above-mentioned restriction teat 61b, 61b.
As shown in Figure 2, the above-mentioned annulus 61a of above-mentioned Spring holder 61 abuts with circular layer difference portion 37a, this circular layer difference portion 37a is formed on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37, and the stop ring 63 clamping above-mentioned annulus 61a between this circular layer difference portion 37a is inlaid in the periphery of above-mentioned supporting cylinder 37.Namely, circumferential position is determined by above-mentioned restriction teat 61b, 61b being embedded in above-mentioned groove 62,62, and determine axial position by being clamped between above-mentioned layer difference portion 37a and stop ring 63, thus by above-mentioned Spring holder 61 setting-in, be fixed on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37.
The above-mentioned spring bearing 61aa of above-mentioned Spring holder 61 is integrally formed with teat 61ab, and this teat 61ab is inserted partially into mode warpage in an end of above-mentioned wedge spring 60 to make one.On the other hand, above-mentioned wedge parts 40 are formed with the spring housing recess 64 of another side of receiving above-mentioned wedge spring 60.
As shown in Figure 5, by above-mentioned thrust piece 38 from the state that above-mentioned supporting cylinder 37 is pulled down, although there is the possibility that above-mentioned wedge parts 40 come off from above-mentioned supporting cylinder 37, prevent this from coming off by escapement 65.
As shown in Figure 5, being made up of engaging teat 66 at least partially of above-mentioned escapement 65, this engaging teat 66 is to be arranged on above-mentioned wedge parts 40 integratedly in the mode engaged with above-mentioned roller 39 from the state that above-mentioned supporting cylinder 37 is pulled down by above-mentioned thrust piece 38, in the present embodiment, above-mentioned escapement 65 is made up of above-mentioned engaging teat 66 and recess 67, wherein, this engaging teat 66 is formed as arc-shaped in the mode that can engage with above-mentioned roller 39 and is arranged on above-mentioned wedge parts 40 integratedly, the mode that the front end of the above-mentioned wedge parts 40 that this recess 67 rotates for engaging with above-mentioned roller 39 along with above-mentioned engaging teat 66 is chimeric is formed on above-mentioned supporting cylinder 37.
The effect of following explanation the 1st mode of execution, the surface of contact 53 towards thrust piece 38 of wedge parts 40 and the surface of contact 54 towards wedge parts 40 of thrust piece 38 are formed as the tabular surface parallel with the movement direction of thrust piece 38, the wedge surface 58 that the mode that the surface of contact towards roller 39 of above-mentioned wedge parts 40 is formed as intersecting sideling with the movement direction relative to above-mentioned thrust piece 38 tilts, therefore, no matter whether thrust piece 38 moves all fixing distance between the surface of contact 54 towards wedge parts 40 of thrust piece 38 and roller 39, therefore, even if thrust piece 38 moves, wedge parts 40 also can not move, the power that wedge parts 40 are pressed on thrust piece 38 is also fixed, frictional force between wedge parts 40 and thrust piece 38 is fixed, thus the scope that stretcher ejector apparatus 36A can play thrust can be expanded, increase the using scope of stretcher ejector apparatus 36A.
In addition, by thrust piece 38 from the state that supporting cylinder 37 is pulled down, prevent wedge parts 40 from coming off from supporting cylinder 37 by escapement 65, therefore, it is possible to realize the raising of assembling performance and maintainability.
In addition, form the engaging teat 66 at least partially of escapement 65 to be arranged on wedge parts 40 integratedly in the mode engaged with roller 39 from the state that supporting cylinder 37 is pulled down by thrust piece 38, therefore, it is possible to avoid forming escapement 65 with increasing amount of parts.
And, engaging teat 66 is formed as the arc-shaped that can engage with roller 39, the recess 67 that the front end of the wedge parts 40 rotated for engaging with roller 39 along with engaging teat 66 is chimeric is formed on supporting cylinder 37, therefore, it is possible to prevent coming off of wedge parts 40 more reliably in the mode making engaging teat 66 can not come off from roller 39.
In addition, the Spring holder 61 of support wedge spring 60 with determine circumferential position mode setting-in, be fixed on the periphery, end of stretcher 35 side of supporting cylinder 37, wherein, wedge spring 60 is with to being arranged between Spring holder 61 and wedge parts 40 with thrust piece 38 to suppress wedge parts 40 mode towards the direction that the movement direction of stretcher 35 side is contrary, therefore, by utilizing supporting cylinder 37, amount of parts ground keep-spring holder 61 can not be increased.
And Spring holder 61 has integratedly and is formed with lower part: annulus 61a, and it has the spring bearing 61aa of support wedge spring 60 in a part for axis, and the end of stretcher 35 side around supporting cylinder 37; With restriction teat 61b, 61b, it is given prominence to the inside from the inner circumferential many places of annulus 61a, on the periphery, end of stretcher 35 side of supporting cylinder 37, axial direction along supporting cylinder 37 is formed extended at both sides many grooves 62,62 embedded for restriction teat 61b, 61b, therefore, it is possible to Spring holder 61 is installed on supporting cylinder 37 with the spline of simple constitution realization Spring holder 61.
With reference to Fig. 6 ~ Fig. 8, the 2nd mode of execution of the present invention is described, identical reference character is marked to the part corresponding with above-mentioned 1st mode of execution and only illustrates, omit detailed description.
In stretcher ejector apparatus 36B, spiral helicine wedge spring 60 is provided with between wedge parts 40 and Spring holder 71, wherein, Spring holder 71 with determine circumferential position mode setting-in, be fixed on the periphery, end of above-mentioned stretcher 35 side of supporting cylinder 37.
Be conceived to Fig. 8, above-mentioned Spring holder 71 has integratedly and is formed with lower part: annulus 71a, it has the spring bearing 71aa of an end of the above-mentioned wedge spring 60 of support in a part for circumference, and the end of above-mentioned stretcher 35 side around above-mentioned supporting cylinder 37; With restriction teat 71b, 71b, its inner circumferential many places from this annulus 71a (being 2 in present embodiment) gives prominence to the inside.On the other hand, as shown in Figure 7, on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37, the axial direction along above-mentioned supporting cylinder 37 is formed extended at both sides many grooves 62,62 embedded for above-mentioned restriction teat 71b, 71b.
As shown in Figure 6, the above-mentioned annulus 71a of above-mentioned Spring holder 71 abuts with circular layer difference portion 37a, this circular layer difference portion 37a is formed on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37, and the stop ring 63 clamping above-mentioned annulus 71a between this circular layer difference portion 37a is inlaid in the periphery of above-mentioned supporting cylinder 37.Namely, circumferential position is determined by above-mentioned restriction teat 71b, 71b being embedded in above-mentioned groove 62,62, and determine axial position by being clamped between above-mentioned layer difference portion 37a and stop ring 63, thus by above-mentioned Spring holder 71 setting-in, be fixed on the periphery, end of above-mentioned stretcher 35 side of above-mentioned supporting cylinder 37.
On the above-mentioned spring bearing 71aa of above-mentioned Spring holder 71, be integrally formed with cylindric teat 71ab in a mode part be inserted in an end of above-mentioned wedge spring 60.
According to the 2nd mode of execution, the effect identical with above-mentioned 1st mode of execution also can be realized.
With reference to Fig. 9 and Figure 10, the 3rd mode of execution of the present invention is described, identical reference character is marked to the part corresponding with the above-mentioned 1st and the 2nd mode of execution and only illustrates, omit detailed description.
On the supporting cylinder 37 of stretcher ejector apparatus 36C, be provided with a pair wall portion 72,72 of the both sides being configured in wedge parts 40 integratedly, for preventing at the escapement 73 that thrust piece 38 is come off from the state hyposphene parts 40 that supporting cylinder 37 is pulled down from supporting cylinder 37, be made up of projecting teat 74,74 on above-mentioned wedge parts 40, this teat 74,74 is outstanding from the side of these wedge parts 40 to side also can be engaged with above-mentioned wall portion 72,72.
In the 3rd mode of execution, above-mentioned wall portion 72 is formed layer difference portion 72a, this layer of difference portion 72a reduces from the outstanding overhang of above-mentioned supporting cylinder 37 in the part corresponding with the both sides of above-mentioned wedge parts 40, and the two end part running through, be fixed on the pin 75 on above-mentioned wedge parts 40 are given prominence to from the bi-side of above-mentioned wedge parts 40 in the mode forming the above-mentioned teat 74,74 engaged with above-mentioned layer difference portion 72a.
According to the 3rd mode of execution, can avoid forming escapement 73 with increasing amount of parts.
With reference to Figure 11, the 4th mode of execution of the present invention is described, identical reference character is marked to the part corresponding with above-mentioned 1st ~ 3rd mode of execution and only illustrates, omit detailed description.
In stretcher ejector apparatus 36D, for at the escapement 76 preventing wedge parts 40 from coming off from supporting cylinder 37 from the state that supporting cylinder 37 is pulled down thrust piece 38, form by making engaging portion 78 and above-mentioned wedge parts 40 arrange continuously integratedly, wherein, be formed between engaging portion 78 and above-mentioned wedge parts 40 and intert for above-mentioned roller 39 and a part for inner circumferential becomes the inserting hole 77 of wedge surface 58.
According to the 4th mode of execution, can avoid forming escapement 76 with increasing amount of parts.
With reference to Figure 12, the 5th mode of execution of the present invention is described, identical reference character is marked to the part corresponding with above-mentioned 1st ~ 4th mode of execution and only illustrates, omit detailed description.
In stretcher ejector apparatus 36E, the at least one party of wedge parts 40 with the surface of contact 53,54 of thrust piece 38 is fixed with clad can (facing) material for improving frictional force, in the 5th mode of execution, at the facing material 80 be fixed with on the surface of contact 53 of above-mentioned thrust piece 38 for improving frictional force of wedge parts 40.
According to the 5th mode of execution, improve the frictional force between wedge parts 40 and thrust piece 38, thus the thrust that thrust piece 38 is pushed back can be improved.
With reference to Figure 13, the 6th mode of execution of the present invention is described, identical reference character is marked to the part corresponding with above-mentioned 1st ~ 5th mode of execution and only illustrates, omit detailed description.
Stretcher ejector apparatus 36F has: above-mentioned supporting cylinder 37; Thrust piece 82, it can be maintained slidably retained in this supporting cylinder 37; As the roller 39 of limiting part, it is arranged on above-mentioned supporting cylinder 37 in the side of this thrust piece 82; With wedge parts 40, it is suppressed to above-mentioned thrust piece 82 towards above-mentioned stretcher 35 (with reference to the 1st mode of execution) direction that the movement direction of side is contrary, and is inserted between above-mentioned roller 39 and above-mentioned supporting cylinder 37.
Above-mentioned thrust piece 82 at one end has the end wall 82a that abuts with above-mentioned stretcher 35 and is formed as bottomed cylindrical, on this thrust piece 82, the spring reception hole 83 from its center axis is formed in the mode of cover 47 side opening screwed togather in the outer end with above-mentioned supporting cylinder 37, compress between above-mentioned end wall 82a and above-mentioned cover 47 and be provided with main spring 52, the major part of this main spring 52 is accommodated in above-mentioned spring reception hole 83.
In this stretcher ejector apparatus 36F, spiral helicine wedge spring 60 is provided with between wedge parts 40 and Spring holder 71, wherein, Spring holder 71 with determine circumferential position mode setting-in, be fixed on the periphery, end of above-mentioned stretcher 35 side of supporting cylinder 37.
The surface of contact 53 towards above-mentioned thrust piece 82 of above-mentioned wedge parts 40 and the surface of contact 84 towards above-mentioned wedge parts 40 of above-mentioned thrust piece 82 are formed as the tabular surface parallel with the movement direction of above-mentioned thrust piece 82, a part for the periphery of the above-mentioned thrust piece 82 in bottomed cylindrical excision is formed flatly, thus forms the surface of contact 84 towards above-mentioned wedge parts 40 of thrust piece 82.
In addition, in above-mentioned stretcher ejector apparatus 36F, by escapement 76 stop by thrust piece 82 from the state that supporting cylinder 37 is pulled down, wedge parts 40 come off from supporting cylinder 37.
In addition, above-mentioned stretcher 35 side is being leaned on than above-mentioned wedge parts 40, in the upper portion side wall of above-mentioned thrust piece 82, be provided with towards the slit 55 be located on above-mentioned supporting cylinder 37 and the oil inlet hole 85 of opening, thus a part for the machine oil flowing to below in above-mentioned cam chain path 26 is directed in the spring reception hole 83 of above-mentioned thrust piece 82.And, the lower sides of the axial intermediate portion of above-mentioned thrust piece 82 is provided with oil outlet 86, the machine oil imported in above-mentioned spring reception hole 83 is directed between the periphery of above-mentioned thrust piece 82 and the internal surface in above-mentioned sliding bearing hole 45 by this oil outlet 86, for lubricating between above-mentioned thrust piece 82 and above-mentioned supporting cylinder 37.
According to the 6th mode of execution, the effect identical with above-mentioned 1st ~ 5th mode of execution also can be realized.
Above, describe embodiments of the present invention, but the present invention is not limited to above-mentioned mode of execution, various design alteration can be carried out not departing from the scope of the present invention described in claims.
Such as make limiting part be roller 39 in the above-described embodiment, as long as but limiting part be configured on the fixed position of supporting cylinder 37 in the mode contacted with the wedge surface 58 of wedge parts 40.
Claims (9)
1. a stretcher ejector apparatus, in supporting cylinder (37) in the fuselage main body (15) being installed on internal-combustion engine (E), to maintain thrust piece (38 to stretcher (35) to be suppressed the mode also can slided to the direction that annular driving band (25) pushes, 82), this thrust piece (38, 82) front end contacts with the described stretcher (35) extended along described annular driving band (25), at limiting part (39) and described thrust piece (38, 82) be inserted with between to described thrust piece (38, 82) towards the contrary direction of the movement direction of described stretcher (35) side by the wedge parts (40) suppressed, wherein, described limiting part (39) is at described thrust piece (38, 82) side is arranged on described supporting cylinder (37), the feature of described stretcher ejector apparatus is,
The surface of contact (53) towards described thrust piece (38,82) of described wedge parts (40) and the surface of contact (54,84) towards described wedge parts (40) of described thrust piece (38,82) are formed as the tabular surface parallel with the movement direction of described thrust piece (38,82), the wedge surface (58) that the mode that the surface of contact towards described limiting part (39) of described wedge parts (40) is formed as intersecting sideling with the movement direction relative to described thrust piece (38,82) tilts.
2. stretcher ejector apparatus as claimed in claim 1, is characterized in that,
There is escapement (65,73,76), for by described thrust piece (38) from the state that described supporting cylinder (37) is pulled down, prevent described wedge parts (40) from coming off from described supporting cylinder (37).
3. stretcher ejector apparatus as claimed in claim 2, is characterized in that,
Form the engaging teat (66) at least partially of described escapement (65), to be arranged on integratedly on described wedge parts (40) in the mode engaged with described limiting part (39) from the state that described supporting cylinder (37) is pulled down by described thrust piece (38).
4. stretcher ejector apparatus as claimed in claim 3, is characterized in that,
Described limiting part is the roller (39) that axle is bearing on described supporting cylinder (37), described engaging teat (66) is formed as the arc-shaped that can engage with described roller (39), described supporting cylinder (37) is formed recess (67), and the front end of the described wedge parts (40) that described recess (67) rotates for engaging with described roller (39) along with described engaging teat (66) is chimeric.
5. stretcher ejector apparatus as claimed in claim 2, is characterized in that,
Described supporting cylinder (37) is provided with a pair wall portion (72) of the both sides being configured in described wedge parts (40) integratedly, described escapement (73) is made up of projecting teat (74) on described wedge parts (40), wherein, described teat (74) also can engage with described wall portion (72) from the side of these wedge parts (40) is outstanding to side.
6. stretcher ejector apparatus as claimed in claim 2, is characterized in that,
Described escapement (76) makes engaging portion (78) and described wedge parts (40) arrange and form continuously integratedly, wherein, between described engaging portion (78) and described wedge parts (40), be formed with the inserting hole (77) interted for described limiting part (39).
7. the stretcher ejector apparatus according to any one of claim 1 ~ 6, is characterized in that,
To suppress the mode of described wedge parts (40) towards the direction that the movement direction of described stretcher (35) side is contrary to described thrust piece (38,82), between Spring holder (61,71) and this wedge parts (40), wedge spring (60) is set, the Spring holder (61,71) of wedge spring described in support (60) with determine circumferential position mode setting-in, be fixed on the periphery, end of described stretcher (35) side of described supporting cylinder (37).
8. stretcher ejector apparatus as claimed in claim 7, is characterized in that,
Described Spring holder (61,71) has integratedly and is formed with lower part: annulus (61a, 71a), it has the spring bearing (61aa, 71aa) for wedge spring described in support (60) in a part for circumference, and the end of described stretcher (35) side around described supporting cylinder (37); With restriction teat (61b, 71b), it is given prominence to the inside from the inner circumferential many places of this annulus (61a, 71a), on the periphery, end of described stretcher (35) side of described supporting cylinder (37), the axial direction along described supporting cylinder (37) is formed extended at both sides many grooves (62) embedded for described restriction teat (61b, 71b).
9. the stretcher ejector apparatus according to any one of claim 1 ~ 8, is characterized in that,
At the surface of contact (53,54 of described wedge parts (40) with described thrust piece (38,42); 53,84), at least one party, the facing material (80) for improving frictional force is fixed with.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013157700 | 2013-07-30 | ||
| JP2013-157700 | 2013-07-30 | ||
| JP2014096480A JP6256988B2 (en) | 2013-07-30 | 2014-05-08 | Tensioner lifter |
| JP2014-096480 | 2014-05-08 |
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| Publication Number | Publication Date |
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| CN104343907A true CN104343907A (en) | 2015-02-11 |
| CN104343907B CN104343907B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410360096.2A Active CN104343907B (en) | 2013-07-30 | 2014-07-25 | Tensioner pushing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113412380A (en) * | 2019-03-28 | 2021-09-17 | 本田技研工业株式会社 | Tensioning regulator |
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| JP2004169850A (en) * | 2002-11-21 | 2004-06-17 | Tsubakimoto Chain Co | Chain tension applicator |
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| JP2004169850A (en) * | 2002-11-21 | 2004-06-17 | Tsubakimoto Chain Co | Chain tension applicator |
| CN101113777A (en) * | 2006-07-26 | 2008-01-30 | 大同工业株式会社 | Mechanical tensioning device for dowm pressing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113412380A (en) * | 2019-03-28 | 2021-09-17 | 本田技研工业株式会社 | Tensioning regulator |
| CN113412380B (en) * | 2019-03-28 | 2024-05-17 | 本田技研工业株式会社 | Tensioning regulator |
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| CN104343907B (en) | 2017-04-12 |
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