CN2893314Y

CN2893314Y - Speed-changer for passenger car and light vehicle with double-cone synchronizer

Info

Publication number: CN2893314Y
Application number: CN 200520029642
Authority: CN
Inventors: 王凤; 于平; 田丙宝; 嵇晓霞; 王化武
Original assignee: CHANGCHUN GEAR WORKS FAW CAR Co Ltd
Current assignee: CHANGCHUN GEAR WORKS FAW CAR Co Ltd
Priority date: 2005-12-30
Filing date: 2005-12-30
Publication date: 2007-04-25
Anticipated expiration: 2015-12-30

Abstract

A derailleur having a dual-prick synchronizer for a passenger vehicle and a light vehicle is composed of an integer shell, a first axis assembly, a second axis assembly, a middle axis assembly, and an upper cover assembly, wherein the first axis is supported at the front end of the integer shell through a ball bearing; one end of the second axis is supported on the back end of the integer shell through a ball bearing with the other end supported in an inner hole of the first axis; each shift gear is arranged on the second axis through a needle bearing; the two ends of the middle axis are connected with the integer shell through the ball bearings; and one end of the fourth and fifth direction changing swing arm is connected with a fourth and fifth shift direction changing block with the other end is connected with a fourth and fifth shift fork. The utility model has the advantages of that the derailleur having a dual-prick synchronizer for a passenger vehicle and a light vehicle can reduce the shift force and the shift impact and shorten the shift time; besides, the shift ranging is more reasonable; with a large rotating speed and small frication, the middle axis is better for shift; and the cost can be reduced.

Description

A kind of passenger vehicle and light-duty vehicular transmission with double-cone synchronizer

Technical field:

The utility model relates to automotive transmission, especially relates to the passenger vehicle and the light truck speed changer of the good band double-cone synchronizer of a kind of flexibility of shifting gears.

Background technique:

The vehicle that the 170N.m-380N.m speed changer is mated on the market roughly is divided into two classes: a kind of is that also having a kind of is exactly light truck and agricultural vehicle because of the fast-developing passenger vehicle of domestic city development need.The speed changer that on these automobiles, uses at present, it mainly is made up of housing, an axle assembly, two axle assemblies, countershaft assembly and last cap assembly etc., and cone bearing is adopted in the total Chengdu of transmission countershaft, and its cost is higher; The shelves preface also mostly is reverse gear, 2 grades, 5 grades one group, and 1 grade, 3 grades, 4 grades one group, shelves preface unreasonable structure and arrangement; Other one grade is exactly that common synchronizer is put into gear except engagement cover engage a gear, causes the gear shift flexibility bad, and berth-changing strength is bigger than normal.

Summary of the invention:

Technical problem to be solved in the utility model provides a kind of grade of preface and arranges rationally, and the gear shift flexibility is good, the speed changer of low cost of manufacture.

The technical solution of the utility model is: comprise integral housing, one axle assembly, two axle assemblies, countershaft assembly and last cap assembly, one is supported on the integral housing front end by a ball bearing, an end of two is supported on the integral housing rear end by a ball bearing, the other end is supported in one the endoporus, each shifting gear is enclosed within on two by the needle bearing sky, the two ends of jack shaft connect integral housing by ball bearing respectively, four, one end and four of five grades of commutation swing arms, five grades of commutation shifting blocks connect, the other end and four, five grades of shift forks connect, intermediate hole and shift selection shaft and shift selection dial assembly Spielpassung, one grade of synchronizer in two axle assemblies adopts double-cone synchronizer, and wherein the cone angle of outer shroud and interior ring is greater than the cone angle of middle ring.

One grade of synchronizer in the utility model two axle assemblies adopts double-cone synchronizer, can reduce berth-changing strength, reduces shifting shock, shorten shift time; Gearshift mechanism adopts four, five grades of transpositions, and it is more reasonable that gear is arranged; Countershaft assembly adopts angular contact ball bearing, and rotating speed height, friction are more conducive to gear shift for a short time, and can reduce cost.

Description of drawings:

Fig. 1 is the utility model general assembly drawing;

Fig. 2 is gear seat assembly packing figure;

Fig. 3 is gear shift fork shaft and shifting fork assembly packing figure;

Fig. 4 is the utility model double-cone synchronizer structural representation.

Embodiment:

With reference to Fig. 1, the utility model comprises integral housing 16, one axle assembly 1, two axle assemblies 5, countershaft assembly 13 and last cap assembly 8, one axle bearing lid 2 is fixed on integral housing 16 front-end faces, be supported on integral housing 16 front ends by a ball bearing 4 for one 3, also be supported on integral housing 16 rear ends for two 7 by a ball bearing 9, the other end is supported on one 3 18 li of endoporus, each shifting gear is enclosed within on two 7 by the needle bearing sky, each grade synchronizer is fixed on two 7 by the toothholder spline, jack shaft 15 in the countershaft assembly 13 is supported on the front-end and back-end of housing 16 respectively by ball bearing 17 and ball bearing 12, double linked wheel 14 is fixed on the jack shaft 15 by interference fit joint, and with one and two on the corresponding one by one engagement of each grade gear; Each axle assembly relies on a shaft-cup 2 and two shaft-cups, 10 axial limitings; Be connected by spline with bead 11 for two 7; All gears on one 3 and two 7 all are drilled with oilhole and guarantee to lubricate, and 6 is one grade of synchronizer.

With reference to Fig. 2, Fig. 3, four, an end of five grades of commutation swing arms 21 is connected with the right notch 26 of four, five grades of commutation shifting blocks 25, the other end is connected with four, five grades of shift forks 28, intermediate hole 22 and shift selection shaft and shift selection dial assembly 20 Spielpassung, the 19th, shifting block connects the left notch 24 of four, five grades of commutation shifting

blocks

25,23 is four, five to fixedly connected with four, five grades of shift forks 28 when declutch shift shaft, and 27 is that four, five grades of commutation fork shafts are fixedlyed connected with four, five grades of shifting blocks 25 that commutate.

With reference to Fig. 4, the outer surface of ring 29 cooperates with the internal surface of middle ring 30 in the double-cone synchronizer, and the outer surface of middle ring 30 cooperates with the internal surface of outer shroud 31, and wherein the cone angle of outer shroud 31 and interior ring 29 is greater than the cone angle of middle ring 30, and the 32nd, synchronizer gear sleeve, 33 is one grade of gear.

Working procedure of the present utility model: when rotation gear shift shifting block, the notch that the gear shift shifting block just promotes four or five grades of commutation shifting blocks moves axially along fork shaft, owing to the intermediate hole in four, five grades of commutation swing arms and shift selection shaft and shift selection dial assembly Spielpassung formation leverage, so just commutate by four, five grades of commutation swing arms, four, five grades of shift forks of four, five grades of commutation swing arm promotions move axially along fork shaft and carry out gear shift.

Middle ring projection in the double-cone synchronizer is with one grade of gear matched and with one grade of gear rotation, when promotion tooth cover is moved to the left the arrival lockup state, interior ring left side contacts with one grade of gear face, this moment, effect lower inner ring and middle ring, outer shroud and the middle ring at tooth cover pressure produced friction, this makes synchronizer and one grade of gear reach synchronous rapidly, and then reduce lock in time, reduce the power of putting into gear.

Claims

1, a kind of passenger vehicle and light-duty vehicular transmission with double-cone synchronizer, comprise integral housing (16), one axle assembly (1), two axle assemblies (5), countershaft assembly (13) and last cap assembly (8), one (3) are supported on integral housing (16) front end by a ball bearing (4), one end of two (7) is supported on integral housing (16) rear end by a ball bearing (9), the other end is supported on endoporus (18) lining of (3), each shifting gear is enclosed within on two (7) by the needle bearing sky, it is characterized in that: the two ends of jack shaft (15) are respectively by ball bearing (17), (12) connect integral housing (16), four, one end and four of five grades of commutation swing arms (21), five grades of commutation shifting blocks (25) connect, the other end and four, five grades of shift forks (28) connect, intermediate hole (22) and shift selection shaft and shift selection dial assembly (20) Spielpassung, one grade of synchronizer (6) in two axle assemblies (5) adopts double-cone synchronizer, and wherein the cone angle of outer shroud (31) and interior ring (29) is greater than the cone angle of middle ring (30).