CN205172669U - A cam slide positioning mechanism for variable valve lift mechanism - Google Patents
A cam slide positioning mechanism for variable valve lift mechanism Download PDFInfo
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- CN205172669U CN205172669U CN201520960220.9U CN201520960220U CN205172669U CN 205172669 U CN205172669 U CN 205172669U CN 201520960220 U CN201520960220 U CN 201520960220U CN 205172669 U CN205172669 U CN 205172669U
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Abstract
A cam slide positioning mechanism for variable valve lift mechanism is including camshaft and cam the camshaft includes interior axle and outer axle, and axial motion can be made to interior axle in outer, be equipped with the slider groove on the cam, the slider inslot is equipped with the cam slide that can realize the radial motion, during the cam slide indentation, and cam outline no change, when the cam slide stretched out, the cam outline had the arch, be equipped with positioning mechanism on cam and the cam slide, carry out clamping orient to the radial motion of cam slide. The utility model discloses simple structure is reliable, and control is easy, and spare part is few, and the assembly is compact, and processing is all relatively more convenient with the assembly, and the reliability is high and with low costs, accomplishes slider radial motion and return under cam slide axle and outside cam follower's in the camshaft the drive, and its radical location leans on the positioning mechanism completion. The utility model discloses use special design's positioning mechanism, the cam slide can be smoothly in inside high lift and the location of realizing of cam to and the location after withdrawing, make the mechanism stable.
Description
Technical field
The utility model relates to technical field of engines, particularly for the cam slide positioning means of variable air valve lift range mechanism.
Background technique
The maximum valve lift of conventional engines when normal work is fixing immutable, and namely the cam profile of camshaft only has one.This just causes this lift can not make motor all obtain good response in high velocity and low velocity zone.The valve lift of conventional engines---design of cam contour line selects the balance of motor under full working scope, and consequently motor both can not get best high speed efficiency, also can not get best low speed torque, best balanced performance under only obtaining full working scope.
But along with the development of automotive industry, the requirement of people to the performance of motor, oil consumption and discharge is more and more higher, one of lift range variable technology beautiful property key technology having become measured engine performance.Lift range variable technology changes the changeless state of conventional engine valve lift, optimal valve lift is provided within the scope of engine operating condition, make motor can be met the valve lift of demand in high velocity and low velocity zone, thus improve high engine speeds power and low speed torque, solve the contradiction of power character and Economy under high rotating speed and the slow-speed of revolution, large load and Smaller load preferably, improve toxic emission simultaneously.
Therefore, lift range variable technology, while significantly promoting engine performance, also has the advantage of its uniqueness in energy saving standard.But, existing variable air valve lift range mechanism is relatively complicated, or by switching complete cam, or make an issue of on rocker arm body, cause increasing many additional parts, system inertia is increased, frictional loss becomes large, and reliability requirement is high, need arrange do larger change and adjustment to engine valve actuating mechanism, the difficulty of engine cylinder cover design is comparatively large, and cost is very high.The charging efficiency improving motor improves the effective way of vehicle economy and power character, because motor required best air inflow under different operating mode is different, and the cam profile controlling valve event is fixing, so the distribution device of conventional engines can only meet the best distribution requirement of Part load.
A kind of good variable air valve lift range mechanism is wherein had to be the structure that cam slide is set on cam, change the line style of cam by the activity of cam slide thus reach the object of lift range variable, but the easy offset orientation of the motion that there is cam slide is inaccurate, there is the problem of rocking circumferentially, mechanism is unstable, easy damage, causes the line style of cam imperfect, affects the efficiency of variable air valve lift range mechanism.
Model utility content
The utility model will solve the problem of prior art, provides a kind of cam slide positioning means for variable air valve lift range mechanism, makes mechanism stable, not easy damaged, cause the line style of cam to keep perfect state for a long time.
For achieving the above object, the technical solution adopted in the utility model is as follows:
For the cam slide positioning means of variable air valve lift range mechanism, comprise camshaft described in camshaft and cam and comprise interior axle and outer shaft, interior axle can do axial motion in outer shaft; Described cam is provided with slide block slot, is provided with the cam slide that can realize radial motion in slide block slot, and during cam slide indentation, cam external frame is unchanged, and when cam slide stretches out, cam external frame has projection; Described cam and cam slide are provided with positioning means, position guiding to the radial motion of cam slide.The radial motion scope of slide block is for being fully retracted in cam and local protrusion cam external frame, the cam profile of camshaft is changed, thus reach the object of the valve lift changing motor, to adapt to best distribution and the emission performance requirement of motor under different operating mode, positioning means ensures the guide-localization of cam slide radial motion.
Preferably, described interior axle is provided with the ring-type path section of certain axial length; Described outer shaft is provided with opening; Described cam slide offsets through opening and interior axle, and in utilizing, axle controls the radial motion of slide block; Be provided with certain gradient between described path section and interior axle outer surface, be convenient to the radial motion of cam slide.By the axial motion of interior axle, cam slide can fall within the path section of interior axle or outside path section, when cam slide falls within the path section of interior axle, cam slide is indentation state, and cam external frame is unchanged, does not produce additional effect, when the path section that cam slide falls within interior axle is outer, cam slide is protruding state, and cam external frame has projection, thus changes cam lift.
Preferably, described cam adds certain thickness boss on two side planes of conventional cam.The effect of described boss is, after cam gear is on camshaft, for cam increases the extra area contacted with camshaft, to increase the radial rigidity of camshaft, reduces radial deformation.
There is a kind of preferred positioning means, described cam is positioned on front side of slide block slot I and is provided with pin-and-hole I, cam is positioned at slide block slot I and is provided with radial guide rail I; Described cam slide is provided with radial waist shaped hole I with pin-and-hole I opposite position, and is provided with the guide-track groove I matched with guide rail I; Described cam is positioned on rear side of slide block slot I and is provided with hole I, cam is positioned at slide block slot I and is provided with radial guide rail I; Described cam slide has and is provided with ball-and-socket with hole I opposite position, and be provided with the guide-track groove I matched with guide rail I; Be provided with locating stud I through pin-and-hole I and waist shaped hole I, and be fixed on cam.Be provided with limited location snap ring, return spring and steel ball, be arranged on from outside to inside in hole I.Guide rail I and guide-track groove I are positioned at the axial location of cam and cam slide.Chimeric mutually, play and prevent the cam slide generation effect of rocking circumferentially.During high lift work, interior axle is by cam slide along slide block slot I jack-up, and locating stud I offsets with one end of the nearly nose of waist shaped hole I, spacing to cam slide, prevents it from flying off because of centrifugal force, ball-and-socket and being separated with the steel ball of its tabling; During low lift work, the path section of interior axle moves to below cam slide, cam with drive cam slide under the effect of rocking arm to be pushed in path section along slide block slot I, locating stud I offsets with one end of waist shaped hole I nose far away, spacing to cam slide, ball-and-socket and steel ball tabling, there is provided damping to cam slide, prevent it from arbitrarily sliding in slide block slot I.
Preferably, one or both sides cam being positioned at slide block slot I are located at by described guide rail I, and corresponding described guide-track groove I is located at the one or both sides of cam slide.Arranging of each one of both sides, general front and back can reach best using effect.
Preferably, guide rail I structure on described cam and guide-track groove I structure on described cam slide interchangeable, namely guide-track groove I structure is set on cam, cam slide is arranged guide rail I structure, also can reach same effect.
As the preferred positioning means of another kind, described cam is positioned at both sides before and after slide block slot II and is provided with pin-and-hole II, cam is positioned at slide block slot II and is provided with radial guide rail II; Described cam slide is provided with radial waist shaped hole II with pin-and-hole II corresponding position, and is provided with the guide-track groove II matched with guide rail II; Be provided with cotter pin cover through waist shaped hole II, be provided with locating stud II through opening guide and front and back pin-and-hole II, and be fixed on cam.Guide rail II and guide-track groove II are positioned at the axial location of cam and cam slide, are fitted together to mutually, play and prevent the cam slide generation effect of rocking circumferentially.During high lift work, interior axle is by cam slide along slide block slot II jack-up, and locating stud II offsets with one end of the nearly nose of waist shaped hole II, spacing to cam slide, prevents it from flying off because of centrifugal force; During low lift work, the path section of interior axle moves to below cam slide, cam with drive cam slide under the effect of rocking arm to be pushed in path section along slide block slot II, locating stud II offsets with one end of waist shaped hole II nose far away, spacing to cam slide, cotter pin is set with and is placed in outside locating stud II circumference and contacts with waist shaped hole II, for cam slide provides damping, prevent it from arbitrarily sliding in slide block slot II.
Preferably, one or both sides cam being positioned at slide block slot II are located at by described guide rail II, and corresponding described guide-track groove II is located at the one or both sides of cam slide.Arranging of each one of both sides, general front and back can reach best using effect.
Preferably, guide rail II structure on described cam and guide-track groove II structure on described cam slide interchangeable, namely guide-track groove II structure is set on cam, cam slide is arranged guide rail II structure, also can reach same effect.
As the preferred positioning means of another kind, described cam is positioned at both sides before and after slide block slot III and is provided with pin-and-hole III; Described cam slide is provided with radial waist shaped hole III with pin-and-hole III corresponding position, pulls open formed shape up and down by after a circular hole dimidiation; Be provided with locating stud III through waist shaped hole III and front and back pin-and-hole III, and be fixed on cam.During high lift work, interior axle is by cam slide along slide block slot III jack-up, and locating stud III offsets with one end of the nearly nose of waist shaped hole III, spacing to cam slide, prevents it from flying off because of centrifugal force; During the work of low lift, the path section of interior axle moves to below cam slide, drives cam slide under the effect of rocking arm to be pushed in path section along slide block slot III at cam and institute, and one end of locating stud III and waist shaped hole III nose far away offsets, spacing to cam slide.
Also have a kind of preferred positioning means, described cam curved surface both sides are respectively equipped with hole II, in hole II, be respectively equipped with limited location snap ring, return spring and steel ball from outside to inside; Described cam slide both sides and hole II corresponding position are respectively equipped with locating slot, and shape is the combination of upper and lower two ball-and-sockets, and with the mating shapes of steel ball.During high lift work, interior axle is by cam slide along slide block slot IV jack-up, and positioning ball is pushed in the locating slot ball-and-socket of nearly nose spacing to cam slide by return spring, prevents it from flying off because of centrifugal force; During low lift work, the path section of interior axle moves to below cam slide, cam with drive cam slide under the effect of rocking arm to be pushed in path section along slide block slot IV, positioning ball is pushed in the locating slot ball-and-socket of nose far away spacing to cam slide by return spring.
Preferably, in said mechanism, be provided with arc groove bottom described cam slide, the radian of arc groove and the radian of interior axle match.Can realize interior axle coordinates steadily with the relative movement of slide block, can also ensure the simplification of installing simultaneously.
The beneficial effects of the utility model are: the utility model is simple and reliable for structure, control easily, component are few, assemble compact, processing is all more convenient with assembling, reliability is high and cost is low, and complete slide block radial motion and return under the driving of cam slide axle and external cam driven member in camshaft, its radial location completes by positioning means.The utility model uses the positioning means of particular design, and cam slide can realize high lift in cam inside smoothly and locate, and the location after regaining, make mechanism stable, not easy damaged, cam line style keeps perfect for a long time, and the function of lift range variable is protected.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model mode of execution one.
Fig. 2 is the structural blast figure of the utility model mode of execution one.
Fig. 3 is the axial sectional view of the utility model mode of execution one.
Fig. 4 is the structural representation of the utility model mode of execution two.
Fig. 5 is the structural blast figure of the utility model mode of execution two.
Fig. 6 is the axial sectional view of the utility model mode of execution two.
Fig. 7 is the radial cross-section at the cam place of the utility model mode of execution two.
Fig. 8 is the structural representation of the utility model mode of execution three.
Fig. 9 is the structural blast figure of the utility model mode of execution three.
Figure 10 is the axial sectional view of the utility model mode of execution three.
Figure 11 is the structural representation of the utility model mode of execution four.
Figure 12 is the structural blast figure of the utility model mode of execution four.
Figure 13 is the axial sectional view of the utility model mode of execution four.
Figure 14 is the radial cross-section at the cam place of the utility model mode of execution four.
In figure: 1, interior axle; 1a, path section; 2, outer shaft; 2a, opening; 3, cam; 3a, boss; 3.1a, slide block slot I; 3.1b, pin-and-hole I; 3.1c, guide rail I; 3.1d, hole I; 3.2a, slide block slot II; 3.2b, pin-and-hole II; 3.2c, guide rail II; 3.3a, slide block slot III; 3.3b, pin-and-hole III; 3.4a, slide block slot IV; 3.4b, hole II; 4, cam slide; 4.1a, guide-track groove I; 4.1b, waist shaped hole I; 4.1c, ball-and-socket; 4.2a, guide-track groove II; 4.2b, waist shaped hole II; 4.3a, arc groove I; 4.3b, waist shaped hole III; 4.4a, arc groove II; 4.3b, locating slot; 5, steel ball; 6, return spring; 7, limited location snap ring; 8, locating stud III; 9, locating stud II; 10, locating stud I; 11, opening guide.
Embodiment
Below by embodiment and accompanying drawing, the utility model is further described.
Mode of execution one: as Figure 1-3, for the cam slide positioning means of variable air valve lift range mechanism, comprise interior axle 1, outer shaft 2 and cam 3, interior axle 1 can do axial motion in outer shaft 2; Cam 3 is provided with slide block slot I 3.1a, is provided with the cam slide 4 that can realize radial motion, is provided with arc groove bottom cam slide 4 in slide block slot I 3.1a, and the radian of arc groove and the radian of interior axle 1 match; Interior axle 1 is provided with the ring-type path section 1a of certain axial length, is provided with certain gradient between path section 1a and interior axle 1 outer surface; Outer shaft 2 is provided with opening 2a, and cam slide 4 offsets through opening 2a and interior axle 1, and in utilizing, axle 1 controls the radial motion of cam slide 4.
Cam 3 and cam slide 4 are also provided with positioning means, guiding is positioned to the radial motion of cam slide 4, positioning means comprises: cam 3 is positioned at pin-and-hole I 3.1b on front side of slide block slot I 3.1a, cam 3 is positioned at slide block slot I 3.1a and is provided with radial guide rail I 3.1c, cam slide 4 is provided with radial waist shaped hole I 4.1b with pin-and-hole I 3.1b opposite position, and is provided with guide-track groove I 4.1a matched with guide rail I 3.1c; Cam 3 is positioned on rear side of slide block slot I 3.1a and is provided with hole I 3.1d, cam 3 is positioned at slide block slot I 3.1a and is provided with radial guide rail I 3.1c, cam slide 4 has and is provided with ball-and-socket 4.1c with hole I 3.1d opposite position, and be provided with guide-track groove I 4.1a matched with guide rail I 3.1c.Locating stud I 10 through pin-and-hole I 3.1b and waist shaped hole I 4.1b, and is fixed on cam 3, is provided with limited location snap ring 7, return spring 6 and steel ball 5, is arranged on from outside to inside in the 3.1d of hole I.Guide rail I 3.1c and guide-track groove I 4.1a is positioned at the axial location of cam 3 and cam slide 4, is fitted together to mutually, plays the effect of rocking preventing cam slide 4 from occurring circumferentially.
Working principle is: during high lift work, the axial motion of interior axle 1 makes cam slide 4 move to outside path section 1a, cam slide 4 does radial motion along slide block slot I 3.1a jack-up, radial motion is by the guide-localization effect of guide rail I 3.1c and guide-track groove I 4.1a, prevent cam slide 4 from rocking circumferentially occurring, locating stud I 10 offsets with one end of the nearly nose of waist shaped hole I 4.1b, spacing to cam slide 4, prevent it from flying off because of centrifugal force, ball-and-socket 4.1c and being separated with the steel ball 5 of its tabling, now cam slide 4 part is stretched out outside cam 3, cam 3 external frame has projection, change cam 3 line style, during low lift work, the path section 1a of interior axle 1 moves to below cam slide 4, cam 3 with drive cam slide 4 under the effect of rocking arm to be pushed in path section 1a along slide block slot I 3.1a, locating stud I 10 offsets with one end of waist shaped hole I 4.1b nose far away, spacing to cam slide 4, ball-and-socket 4.1c and steel ball 5 tabling, provide damping to cam slide 4, prevents it from arbitrarily sliding in slide block slot I 3.1a, now cam slide 4 is fully retracted in cam 3, and cam 3 external frame is unchanged.
Mode of execution two: as shown in figs. 4-7, positioning means is with the difference of mode of execution one, its positioning means comprises: slide block slot II 3.2a on cam 3, cam 3 is positioned at guide rail II 3.2c before and after slide block slot II 3.2a, both sides axis being respectively equipped with pin-and-hole II 3.2b and radial direction; Cam slide 4 is provided with radial waist shaped hole II 4.2b with pin-and-hole II 3.2b corresponding position, and guide-track groove II 4.2a matched with guide rail II 3.2c; Opening guide 11 is through waist shaped hole II 4.2b, and locating stud II 9 through opening guide 11 and front and back pin-and-hole II 3.2b, and is fixed on cam 3.
Working principle is: during high lift work, the axial motion of interior axle 1 makes cam slide 4 move to outside path section 1a, cam slide 4 does radial motion along slide block slot II 3.2a jack-up, radial motion is by the guide-localization effect of guide rail II 3.2c and guide-track groove II 4.2a, locating stud II 9 and opening guide 11 offset with one end of waist shaped hole II 4.2b nearly cam 3 peach point, spacing to cam slide 4, prevent it from flying off because of centrifugal force; During low lift work, the path section 1a of interior axle 1 moves to below cam slide 4, cam 3 with drive cam slide 4 under the effect of rocking arm to be pushed in path section 1a along slide block slot II 3.2a, locating stud II 9 and opening guide 11 offset with one end of waist shaped hole II 4.2b nose far away, spacing to cam slide 4, it is outer and contact with waist shaped hole II 4.2b that opening guide 11 is installed on locating stud II 9 circumference, for cam slide 4 provides damping, prevent it from arbitrarily sliding in slide block slot II 3.2a.
Mode of execution three: as seen in figs. 8-10, be positioning means with the difference of mode of execution one and mode of execution two, its positioning means comprises: slide block slot III 3.3a on cam 3, cam 3 is positioned at both sides before and after slide block slot III 3.3a and is provided with pin-and-hole III 3.3b; Cam slide 4 is provided with radial waist shaped hole III 4.3b with pin-and-hole III 3.3b corresponding position; Be provided with locating stud III 8 through waist shaped hole III 4.3b and front and back pin-and-hole III 3.3b, and be fixed on cam 3; Be provided with arc groove I 4.3a bottom cam slide 4, the radian of arc groove I 4.3a and the radian of interior axle 1 match.
Working principle is: during high lift work, the axial motion of interior axle 1 makes cam slide 4 move to outside path section 1a, cam slide 4 does radial motion along slide block slot III 3.3a jack-up, locating stud III 8 offsets with one end of waist shaped hole III 4.3b nearly cam 3 peach point, spacing to cam slide 4, prevent it from flying off because of centrifugal force, now cam slide 4 part is stretched out outside cam 3, and cam 3 external frame has projection, changes cam 3 line style; During low lift work, path section 1a moves to below cam slide 4, cam 3 with drive cam slide 4 under the effect of rocking arm to be pushed in path section 1a along slide block slot III 3.3a, locating stud III 8 offsets with one end of waist shaped hole III 4.3b cam 3 far away peach point, spacing to cam slide 4, in now cam slide 4 indentation cam 3, cam 3 external frame is unchanged.
Mode of execution four: as illustrated in figs. 11-14, positioning means is with the difference of above-mentioned mode of execution, its positioning means comprises: slide block slot IV 3.4a on cam 3, cam 3 curved surface both sides are respectively equipped with hole I 3.4b, limited location snap ring 7, return spring 6 and steel ball 5 is respectively equipped with from outside to inside in the 3.4b of hole I, cam slide 4 both sides and hole I 3.4b corresponding position are respectively equipped with locating slot 4.4b, and shape is the combination of upper and lower two ball-and-sockets, and with the mating shapes of steel ball 5.Limited location snap ring 7 is fixed in the 3.4b of hole I, and return spring 6 promotes steel ball 5, and steel ball 5 and cam slide 4 are tightly offseted, and be provided with arc groove II 4.4a bottom cam slide 4, the radian of arc groove II 4.4a and the radian of interior axle 1 match.
Working principle is: during high lift work, the axial motion of interior axle 1 makes cam slide 4 move to outside path section 1a, cam slide 4 does radial motion along slide block slot IV 3.4a jack-up, positioning ball 5 is pushed in the locating slot 4.4b ball-and-socket of nearly cam 3 peach point spacing to cam slide 4 by return spring 6, prevent it from flying off because of centrifugal force, now cam slide 4 part is stretched out outside cam 3, cam 3 external frame has projection, changes cam 3 line style; During low lift work, path section 1a moves to below cam slide 4, cam 3 with drive cam slide 4 under the effect of rocking arm to be pushed in path section 1a along slide block slot IV 3.4a, positioning ball 5 is pushed in the locating slot 4.4b ball-and-socket of cam 3 peach point far away spacing to cam slide 4 by return spring 6, in now cam slide 4 indentation cam 3, cam 3 external frame is unchanged.
In the above-described embodiment, cam 3 can have boss 3a at one or both sides planar outboard, and effect is after cam 3 device is on camshaft, for cam 3 increases the extra area contacted with camshaft, to increase the radial rigidity of camshaft, reduce radial deformation.
In the above-described embodiment, be applicable to mode of execution one comparatively large with cam slide 4 width in mode of execution two, rely on guide rail and guide-track groove structure spacing, prevent cam slide 4 from rocking circumferentially occurring.Be applicable to mode of execution three less with cam slide 4 width in mode of execution four, rely on cam 3 pairs of left and right sides spacing, prevent cam slide 4 from rocking circumferentially occurring.
Apparent, mode of execution one and mode of execution two middle guide I 3.1c and guide-track groove I 4.1a, the combination of guide rail II 3.2c and guide-track groove II 4.2a also has the change of various ways, can be each one group of front and back as shown in the figure, also can arrange many groups, only one or more groups can also be set in side.Meanwhile, the guide-track groove structure on the guide rail structure on cam 3 and cam slide 4 is interchangeable, also plays same effect.
Accordingly, position structure on mode of execution four cam 3 and cam slide 4 is also interchangeable, in mode of execution three, the combination of pin-and-hole III 3.3b, waist shaped hole III 4.3b and locating stud III 8 also has the change of various ways, and the pin-and-hole III 3.3b structure on cam 3 and the waist shaped hole III 4.3b structure on cam slide 4 can be exchanged equally.
In addition, although do not show in figure, bottom mode of execution one and mode of execution two cam slide block 4, the arc groove matched with the radian of interior axle 1 also can be set.
The foregoing is only specific embodiment of the utility model, but structure characteristic of the present utility model is not limited thereto, the utility model may be used on similar product, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (12)
1., for the cam slide positioning means of variable air valve lift range mechanism, comprise camshaft and cam (3), it is characterized in that:
Described camshaft comprises interior axle (1) and outer shaft (2), and interior axle (1) can do axial motion in outer shaft (2);
Described cam (3) is provided with slide block slot, is provided with the cam slide (4) that can realize radial motion in slide block slot, and during cam slide (4) indentation, cam (3) external frame is unchanged, and when cam slide (4) stretches out, cam (3) external frame has projection;
Described cam (3) and cam slide (4) are provided with positioning means, position guiding to the radial motion of cam slide (4).
2. the cam slide positioning means for variable air valve lift range mechanism according to claim 1, is characterized in that:
Described interior axle (1) is provided with the ring-type path section (1a) of certain axial length;
Described outer shaft (2) is provided with opening (2a);
Described cam slide (4) offsets through opening (2a) and interior axle (1), and in utilizing, axle (1) controls the radial motion of slide block (4);
Certain gradient is provided with between described path section (1a) and interior axle (1) outer surface;
Described cam (3) is provided with boss (3a) at both sides planar outboard, to increase the area of contact with camshaft.
3. the cam slide positioning means for variable air valve lift range mechanism according to claim 2, is characterized in that: described positioning means comprises:
Slide block slot on described cam (3) is set to slide block slot I (3.1a), cam (3) is positioned at slide block slot I (3.1a) front side and is provided with pin-and-hole I (3.1b), cam (3) is positioned at slide block slot I (3.1a) rear side and is provided with hole I (3.1d), in hole I (3.1d), be respectively equipped with limited location snap ring (7), return spring (6) and steel ball (5) from outside to inside; Cam (3) is positioned at slide block slot I (3.1a) and is provided with radial guide rail I (3.1c);
Described cam slide (4) front side is provided with radial waist shaped hole I (4.1b) with pin-and-hole I (3.1b) corresponding position, and is provided with the guide-track groove I (4.1a) matched with guide rail I (3.1c); Have on rear side of described cam slide (4) and be provided with a ball-and-socket (4.1c) with hole I (3.1d) corresponding position, and be provided with the guide-track groove I (4.1a) matched with guide rail I (3.1c);
Be provided with locating stud I (10) through waist shaped hole I (4.1b) and pin-and-hole I (3.1b), and be fixed on cam (3).
4. the cam slide positioning means for variable air valve lift range mechanism according to claim 3, it is characterized in that: described guide rail I (3.1c) is located at one or both sides cam (3) being positioned at slide block slot I (3.1a), corresponding described guide-track groove I (4.1a) is located at the one or both sides of cam slide (4).
5. the cam slide positioning means for variable air valve lift range mechanism according to claim 4, is characterized in that: guide rail I (3.1c) structure on described cam (3) and guide-track groove I (4.1a) structure on described cam slide (4) interchangeable.
6. the cam slide positioning means for variable air valve lift range mechanism according to claim 2, is characterized in that: described positioning means comprises:
Slide block slot on described cam (3) is set to slide block slot II (3.2a), before and after cam (3) being positioned at slide block slot II (3.2a), both sides are provided with pin-and-hole II (3.2b), cam (3) are positioned at slide block slot II (3.2a) and are provided with radial guide rail II (3.2c);
Described cam slide (4) is gone up and pin-and-hole II (3.2b) corresponding position is provided with radial waist shaped hole II (4.2b), and is provided with the guide-track groove II (4.2a) matched with guide rail II (3.2c);
Be provided with opening guide (11) through waist shaped hole II (4.2b) and with it contact internal walls;
Be provided with locating stud II (9) through opening guide (11) and front and back pin-and-hole II (3.2b), and be fixed on cam (3).
7. the cam slide positioning means for variable air valve lift range mechanism according to claim 6, it is characterized in that: described guide rail II (3.2c) is located at one or both sides cam (3) being positioned at slide block slot II (3.2a), corresponding described guide-track groove II (4.2a) is located at the one or both sides of cam slide (4).
8. the cam slide positioning means for variable air valve lift range mechanism according to claim 7, is characterized in that: guide rail II (3.2c) structure on described cam (3) and guide-track groove II (4.2a) structure on described cam slide (4) interchangeable.
9. the cam slide positioning means for variable air valve lift range mechanism according to claim 2, is characterized in that: described positioning means comprises:
Slide block slot on described cam (3) is set to slide block slot III (3.3a), and before and after cam (3) being positioned at slide block slot III (3.3a), both sides are provided with pin-and-hole III (3.3b);
Described cam slide (4) is gone up and pin-and-hole III (3.3b) corresponding position is provided with radial waist shaped hole III (4.3b);
Be provided with locating stud III (8) through waist shaped hole III (4.3b) and front and back pin-and-hole III (3.3b), and be fixed on cam (3).
10. the cam slide positioning means for variable air valve lift range mechanism according to claim 9, it is characterized in that: described cam slide (4) bottom is provided with arc groove I (4.3a), and the radian of arc groove I (4.3a) and the radian of interior axle (1) match.
The 11. cam slide positioning meanss for variable air valve lift range mechanism according to claim 2, is characterized in that: described positioning means comprises:
Slide block slot on described cam (3) is set to slide block slot IV (3.4a), and cam (3) curved surface both sides are respectively equipped with hole II (3.4b), is respectively equipped with limited location snap ring (7), return spring (6) and steel ball (5) in hole II (3.4b) from outside to inside;
Described cam slide (4) both sides and hole II (3.4b) corresponding position are respectively equipped with locating slot (4.4b), and shape is the combination of upper and lower two ball-and-sockets, and with the mating shapes of steel ball (5).
The 12. cam slide positioning meanss for variable air valve lift range mechanism according to claim 11, it is characterized in that: described cam slide (4) bottom is provided with arc groove II (4.4a), and the radian of arc groove II (4.4a) and the radian of interior axle (1) match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520960220.9U CN205172669U (en) | 2015-11-27 | 2015-11-27 | A cam slide positioning mechanism for variable valve lift mechanism |
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| CN201520960220.9U CN205172669U (en) | 2015-11-27 | 2015-11-27 | A cam slide positioning mechanism for variable valve lift mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317498A (en) * | 2015-11-27 | 2016-02-10 | 杭州新坐标科技股份有限公司 | Cam sliding block locating mechanism for variable valve lifting mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317498A (en) * | 2015-11-27 | 2016-02-10 | 杭州新坐标科技股份有限公司 | Cam sliding block locating mechanism for variable valve lifting mechanism |
| CN105317498B (en) * | 2015-11-27 | 2017-10-31 | 杭州新坐标科技股份有限公司 | Cam slide detent mechanism for variable air valve lift range mechanism |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20171031 |