CN2517622Y

CN2517622Y - Multi-disk cam shifting machine

Info

Publication number: CN2517622Y
Application number: CN 02212331
Authority: CN
Inventors: 江大建; 高启
Original assignee: YANTAI HONGQIAO HI-TECH Co Ltd
Current assignee: YANTAI HONGQIAO HI-TECH Co Ltd
Priority date: 2002-01-22
Filing date: 2002-01-22
Publication date: 2002-10-23
Anticipated expiration: 2012-01-22

Abstract

The utility model discloses a multi-disk shape cam shift device, which adopts a shift executive mechanism implementing automatic transmission improvement to the motor vehicle which is equipped with a manual speed changer. The utility model consists of a plurality of coaxial disk cams which act on the shift fork rod of a motor vehicle speed shifter through a driven part swing rod and match the automatic shift main device to realize the automatic transmission of the vehicle. The utility model is characterized in that the structure is simple, the performance is reliable, and the cost is low, and the utility model has a wide range of application.

Description

A kind of polydisc shape cam gearshift

One, technical field

The utility model belongs to motor vehicle gear changing transmission system technical field, especially relates to a kind of polydisc shape self-propelled vehicle auto-shifting device.

Two, background technology

Self-propelled vehicle is in order to obtain efficient preferably, in power-transmission system, be provided with a change-speed box, the tradition change-speed box is a mechanical type, some groups of gears are arranged, the different when forward and reverse transmissions of transmission is provided, to satisfy self-propelled vehicle walking needs, mechanical transmission is inexpensive because of it, and the transmission efficiency height is still the self-propelled vehicle first-selection at present, but the maneuverability pattern of this change-speed box is a hand shift, higher to driving technical requirements, influenced the development of self-propelled vehicle, under the trend of car family oriented, be necessary that when keeping the mechanical transmission advantage it is autoshift that hand shift is promoted.

Three, summary of the invention

The purpose of this utility model is to improve the deficiency of prior art and a kind of simple in structure, dependable performance, polydisc shape motor vehicle gear changing device that cost is low is provided.

The purpose of this utility model is to realize like this, a kind of polydisc shape cam gearshift, form by axle and shift shaft, be characterized in being fixed with on axle at least three disc cams, each disc cam is provided with tongue, and fork can anchor shaft be center of circle swing, the middle part of fork and an end are provided with roller, the roller at fork middle part is installed in the tongue and can rolls in groove, the roller activity holding of fork one end in the short slot of shifting fork bar, fork, shifting fork bar all with the tangent installation of disc cam end face.

In order further to realize the purpose of this utility model, can also be that tongue curve on the disc cam is the intrinsic stroke imprinting that shifting fork bar promotes the interlock of vehicle transmission case inner gear, separation, when the tongue of a cam is made the curvature change in radius, the tongue of other cams radial location that all mediates in this angle.

Compared with the prior art the utility model has following distinguishing feature and good effect: many disc cams are fixed on same axle and go up rotation, every cam acts on the tongue curvature change respectively on the shifting fork bar of vehicle transmission by the driven member fork, be converted to reciprocally swinging rotatablely moving and become straight-line motion again, the shift fork bar is finished intrinsic gear shift task, tongue curve on every cam is the set imprinting of effector shifting fork bar path of motion, the curvature change of each cam tongue must be followed the intrinsic rule of shift fork group, promptly only allow the mobile interlock of one of them grade, all the other shelves are in neutral gear.

Four, description of drawings

Below in conjunction with drawings and Examples wooden utility model is described in further detail.

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is that the A of Fig. 1 is to view.

Fig. 3 is the corresponding scheme drawing of the disc cam tongue curve of Fig. 1.

Fig. 4 is an another kind of structural representation of the present utility model.

Fig. 5 is the corresponding scheme drawing of the disc cam tongue curve of Fig. 4.

Five, specific embodiments

Embodiment 1, a kind of polydisc shape cam gearshift, with reference to Fig. 1, Fig. 2, Fig. 3, on axle 4, be fixed with at least three disc cams, each disc cam is provided with tongue, fork is center of circle swing with the anchor shaft, the middle part of fork and an end are provided with roller, the roller at fork middle part is installed in the tongue and can rolls in groove, the roller activity holding of fork one end is in the short slot of shifting fork bar, adopt three disc cams in the present embodiment, disc cam 1, disc cam 2 and disc cam 3 circles fix on the axle 4 and can rotate around axle 4 hearts, disc cam 1, disc cam 2, be respectively equipped with tongue 12 on the

disc cam

3,13,14,

fork

5,6, the roller 9 at 7 middle parts, 10,11 are installed on the tongue 12 of disc cam respectively, 13, also can in groove, roll in 14,

fork

5,6,7 is that the center of circle is fixing with axle 8 swings,

fork

5,6, the roller 15 of 7 one ends, 16,17 difference holdings are at shifting

fork bar

18,19, also can rotate in 20 the short slot, shifting

fork bar

18,19, an end of 20 is provided with shift fork 21,

fork

5,6,7, shifting

fork bar

18,19,20 with

disc cam

1,2,3 tangent installations, solid line among Fig. 3, dotted line, long and two-short dash line is represented tongue 12 respectively, 13,14,

disc cam

1,2,3

tongue

12,13, it must be when a cam tongue is made the curvature change in radius that 14 radius of curvature changes, in this angle, all the other two cam tongues are on the circular arc line 22, it is Neutral Position, tongue 12 is born 4 grade 27 of turnover, 3 grade of 26 task, tongue 13 is born 2 grade 25 of turnover, 1 grade of 24 task, tongue 14 is born turnover reverse gear 23 tasks, the tongue radius of curvature changes the stroke that value difference should satisfy corresponding shifting fork bar turnover shelves, has more than constituted a kind of static structure of the present utility model.

When using the utility model, axle 4 is connected with the reducing motor output shaft, axle 4

drives disc cam

1,2,3 and rotates synchronously, the radius of curvature of

tongue

12,13,14 changes, pass to

fork

5,6,7 by

roller

9,10,11 respectively,

fork

5,6,7 is that fulcrum is made reciprocally swinging with axle 8 centers of circle, through

roller

15,16,17 difference

shift fork bars

18,19,20 linear reciprocating motions, stir change-speed box through shift fork 21 and respectively organize gear interlock, disengaging, realize the gear shift function.

Embodiment 2, a kind of polydisc shape cam gearshift, with reference to Fig. 2, Fig. 4, Fig. 5, present embodiment adopts four disc cams, disc cam 1, disc cam 2, disc cam 3 and disc cam 28 are fixed on the axle 4 and can rotate around axle 4 hearts, disc cam 1, disc cam 2, disc cam 3, be respectively equipped with tongue 12 on the

disc cam

28,13,14,29,

fork

5,6,7, the roller 9 at 30 middle parts, 10,11,31 are installed on the tongue 12 of disc cam respectively, 13,14, also can in groove, roll in 29,

fork

5,6,7,30 is that the center of circle is fixing with axle 8 swings,

fork

5,6,7, the roller 15 of 30 1 ends, 16,17,32 difference holdings are at shifting

fork bar

18,19,20, also can rotate in 33 the short slot, shifting

fork bar

18,19,20, an end of 33 is provided with shift fork 21,

fork

5,6,7,30, shifting

fork bar

18,19,20,33 with

disc cam

1,2,3,28 tangent installations, heavy line among Fig. 5, fine line, middle solid line, dotted line is represented tongue 12 respectively, 13,14,29,

disc cam

1,2,3,28

tongue

12,13,14, it must be when a cam tongue is made the curvature change in radius that 29 radius of curvature changes, in this angle, its excess-three cam tongue is on the circular arc line 22, it is Neutral Position, tongue 12 is born turnover

reverse gear

23,7 grade of 36 task, tongue 13 is born 6 grade 35 of turnover, 5 grade of 34 task, tongue 14 is born 4 grade 27 of turnover, 3 grade of 26 task, tongue 28 is born 2 grade 25 of turnover, 1 grade of 24 task, the tongue radius of curvature changes the stroke that value difference should satisfy corresponding shifting fork bar turnover shelves, and this has constituted another kind of static structure of the present utility model.

drives disc cam

1,2,3,28 and rotates synchronously, the radius of curvature of

tongue

12,13,14,29 changes, pass to

fork

5,6,7,30 by

roller

9,10,11,31 respectively,

fork

5,6,7,30 is that fulcrum is made reciprocally swinging with axle 8 centers of circle, through

roller

15,16,17,32 difference

shift fork bars

18,19,20,33 linear reciprocating motions, stir change-speed box through shift fork 21 and respectively organize gear interlock, disengaging, realize the gear shift function.

In fact, various transmission design have nothing in common with each other, the gear positions difference, turnover shelves stroke difference, the shelves number of D Drive is also variant, by 4,5,6 or more, use the utility model and can both finish autoshift, if shifting fork bar increases then corresponding increase disc cam and fork, promptly a shifting fork bar disposes one group of cam pair, arranges and the corresponding imprinting of track of stroke just can realize on disc cam according to its gear.

Claims

1, a kind of polydisc shape cam gearshift, form by axle and shift shaft, it is characterized in that on axle, being fixed with at least three disc cams, each disc cam is provided with tongue, fork can anchor shaft be center of circle swing, and the middle part of fork and an end are provided with roller, and the roller at fork middle part is installed in the tongue and can rolls in groove, the roller activity holding of fork one end in the short slot of shifting fork bar, fork, shifting fork bar all with the tangent installation of disc cam end face.

2, a kind of polydisc shape cam gearshift according to claim 1, it is characterized in that the tongue curve on the disc cam is the intrinsic stroke imprinting that shifting fork bar promotes the interlock of vehicle transmission case inner gear, separation, when the tongue of a cam is made the curvature change in radius, the tongue of other cams radial location that all mediates in this angle.