CN2709713Y

CN2709713Y - Automatic speed transmission

Info

Publication number: CN2709713Y
Application number: CN 200420046658
Authority: CN
Inventors: 柯伯林
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-04
Filing date: 2004-06-04
Publication date: 2005-07-13
Anticipated expiration: 2014-06-04

Abstract

The utility model discloses an automatic speed transmission, comprising a gearbox body, an output shaft, an input shaft, a gap bridge shaft, a drive gear mechanism, a first oriented clutch assembled on the gap bridge shaft and a second oriented clutch assembled on the output shaft. The outer gear-ring of the first oriented clutch is engaged with the first small gear of the drive gear mechanism; the outer gear-ring of the second oriented clutch is engaged with the third small gear of the drive gear mechanism. The utility model with simple structure and low production cost has the function of reversely self-locked of the output shaft and can change the turning of the output shaft through simultaneously changing the assembling direction of the oriented clutch of the output shaft and the gap bridge shaft.

Description

Automatic transmission

Technical field

The utility model relates to a kind of speed changer, belongs to a kind of automatic transmission.

Background technique

General manual transmission is to make shift fork drive shifting slide gear by the manual operation handle to mesh or separate the realization speed change.Though manual transmission is simple in structure, need the user to grasp certain operative skill, otherwise the speed change difficulty, and speed changer is damaged.In order to address this problem, people have developed hydraulic automatic transmission, though can realize automatic speed changing, exist structure complicated, technological requirement height, the deficiency that cost of production is high.

The purpose of this utility model provides a kind of simple in structure, automatic transmission that cost of production is low.

The purpose of this utility model is achieved in that it mainly is included in gearbox casing, output shaft, input shaft, gap bridge axle, drive gear mechanism, also comprises upward first directional clutch of assembling of axle of passing a bridge, second directional clutch that assembles on the output shaft; First pinion of the outer tooth ring of first directional clutch and drive gear mechanism, the outer tooth ring of second directional clutch and the engagement of the third pinion of drive gear mechanism.

The utility model since on the output shaft and the axle of passing a bridge respectively two directional clutch of assembling mesh with drive gear mechanism, input shaft clockwise rotates with to rotate counterclockwise the speed ratio that is transferred to output shaft different, therefore, when output shaft turns to change, the rotating speed of output shaft also changes thereupon automatically, but turn to constantly, and have the reverse auto-lock function of output shaft.Also have characteristics simple in structure, that cost of production is low.

Description of drawings

Fig. 1 is the utility model embodiment's a schematic representation

Fig. 2 is Figure 1A-A sectional view

Fig. 3 is the B-B sectional view of Fig. 2

Fig. 4 is the utility model embodiment clutch assembling schematic representation

Fig. 5 is the utility model embodiment clutch forward scheme of installation

Fig. 6 is the reverse scheme of installation of the utility model embodiment clutch

Among the figure: output shaft 1 gear shift cover 3 gearbox casings 4 second directional clutch 5 gearwheels 6 first directional clutch 8 input shafts 9 first small gears 10 third pinions 11 second small gears 12 gap bridge axles 13 rollers 14 pushing sleeves 15 springs 16 press tables 17 star-wheels 18 keys 19 top boards 20 outer tooth rings 21

Embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, it is made up of gear shift cover 3, gearbox casing 4, input shaft 9, output shaft 1, the axle 13 of passing a bridge, gear drive, two directional clutch and bearing 2, key 19, oil sealing 7, an axle spacer.Adorn three pairs of bearings 2 in the gearbox casing 4 respectively, input shaft 9, output shaft 1, the axle 13 of passing a bridge are placed through respectively in three pairs of bearings 2.Gear drive is made up of first small gear 10, second small gear 12, third pinion 11 and gearwheel 6.First small gear 10 and third pinion 11 are contained on the input shaft 9, and second small gear 12 is contained on the axle 13 of passing a bridge, and gearwheel 6 is contained on the output shaft 1.First directional clutch 8 of assembling on the gap bridge axle 13, second directional clutch, 5, the first directional clutch 8 of assembling and the periphery wall of second directional clutch 5 are respectively equipped with outer tooth ring on the output shaft 1.The outer tooth ring of first directional clutch 8 and 10 engagements of first small gear, the outer tooth ring of second directional clutch 5 and third pinion 11 engagements, second small gear 12 and gearwheel 6 engagements.With reference to Fig. 4, Fig. 5, Fig. 6, first directional clutch 8 and second directional clutch 5 are made up of top board 20, outer tooth ring 21, press table 17, spring 16, pushing sleeve 15, star-wheel 18, roller 14 respectively.Spring 16 and pushing sleeve 15 are contained in the aperture on the star-wheel 18, outer tooth ring 21 is contained on the periphery wall of star-wheel 18, roller 14 is contained in the wedge cavities between outer tooth ring and the star-wheel, by spring 16 and pushing sleeve 15 roller 14 is contacted all the time with star-wheel 18 with outer tooth ring 21, press table 17 is contained in below star-wheel 18 and the outer tooth ring 21, and top board 20 is contained in star-wheel 18 and above the outer tooth ring 21.The star-wheel endoporus of first clutch 8 is contained on the axle 13 of passing a bridge, and by key 19 transferring power on the axle 13 of passing a bridge, power is delivered on the axle 13 of passing a bridge by first clutch 8.The star-wheel endoporus of second clutch 5 is contained on the output shaft 1, and power is delivered on the output shaft 1 by second clutch 5.Also can change turning to of output shaft by changing output shaft simultaneously and the installation direction of the directional clutch of the axle of passing a bridge (the star-wheel bottom surface is installed, and it is constant that other part is installed relation) up.Working principle: when motor or motor drive input shaft and clockwise rotate, first small gear drives first directional clutch and rotates counterclockwise, first directional clutch drives its inner roller with frictional force and rolls forward, the inside and outside surface of contact of further wedging, thereby driving star-wheel rotates, the clutch that is contained on the axle of passing a bridge is in bonding state, drive second small gear to rotate counterclockwise by the key on pass a bridge axle and the axle, second small gear drives gearwheel to clockwise rotate, and gearwheel drives output shaft by the key on the axle and clockwise rotates.Third pinion drives second directional clutch and rotates counterclockwise, and second directional clutch drives its inner roller and overcomes the spacious part that spring force is rolled into wedge shape cavity, and second directional clutch that is contained on the output shaft is in separated state.When the driven by motor input shaft rotates counterclockwise, first small gear drives first directional clutch and clockwise rotates, its inner roller of first directional clutch overcomes the spacious part that spring force is rolled into wedge shape cavity, and first directional clutch that is contained on the axle of passing a bridge is in separated state.Second directional clutch drives its inner roller with frictional force and rolls forward, the inside and outside surface of contact of further wedging, thereby driving star-wheel rotates, second directional clutch that is contained on the output shaft is in bonding state, and the star-wheel of the second directional clutch inside drives output shaft by the key on the axle and clockwise rotates.When rotating counterclockwise output shaft, two directional clutch are in bonding state simultaneously, and gear transmission takes place to interfere mutually, therefore, has the reverse auto-lock function of output shaft.

Claims

1, a kind of automatic transmission, it mainly is included in gearbox casing, output shaft, input shaft, gap bridge axle, drive gear mechanism, it is characterized in that: also comprise upward first directional clutch (8) of assembling of axle (13) of passing a bridge, output shaft (1) is gone up second directional clutch (5) of assembling; First pinion (10) of the outer tooth ring of first directional clutch (8) and drive gear mechanism, third pinion (11) engagement of the outer tooth ring of second directional clutch (5) and drive gear mechanism.

2, automatic transmission according to claim 1, it is characterized in that: described first, second directional clutch (5,8) spring (16) and pushing sleeve (15) are contained in the aperture on the star-wheel (18), outer tooth ring (21) is contained on the periphery wall of star-wheel (18), roller (14) is contained in the wedge cavities between outer tooth ring and the star-wheel, by spring (16) and pushing sleeve (15) roller (14) is contacted all the time with star-wheel (18) with outer tooth ring (21), press table (17) is contained in below star-wheel (18) and the outer tooth ring (21), and top board (20) is contained in star-wheel (18) and above the outer tooth ring (21).

3, automatic transmission according to claim 1, it is characterized in that: first small gear (10) of described gear drive and third pinion (11) are contained on the input shaft (9), second small gear (12) is contained on the axle (13) of passing a bridge, gearwheel (6) is contained on the output shaft (1), second small gear (12) and gearwheel (6) engagement.