CN201588911U

CN201588911U - Energy-saving overdrive automatic transmission

Info

Publication number: CN201588911U
Application number: CN2009201881966U
Authority: CN
Inventors: 吴自传
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-13
Filing date: 2009-10-13
Publication date: 2010-09-22
Anticipated expiration: 2019-10-13

Abstract

At present, the abrasion loss, oil consumption and maintenance cost of transmissions of automobiles are high. In the plurality sets of speed-change gears of a transmission provided by the utility model, a compact component including drive gears at all gear positions, a rolling bearing, a ratchet wheel gear ring, a driving disc, a swing part and a return tension spring is fixed on a drive shaft, and a compact component including driven gears at all gear positions, a one-way ratchet wheel clutch, a ratchet wheel sprocket hole, a driven disc and a smooth ratchet pawl are fixed on a driven shaft. During the normal running of a vehicle, variation of the rotating speed of an engine leads to the variation of rotating speed of the drive shaft; within pre-designed different rotating speed intervals, a drive gear component and a driven gear component mutually interact, so that all the gear positions are automatically disengaged and engaged in a reciprocating circulating way, to realize automatic speed regulation. The transmission has the advantages of energy conservation, simple system structure, no gear position error and over neutral gear, and does not hamper the inertia gliding of vehicle.

Description

Energy-conservation automatic over-drive gear transmission

Technical field

The utility model relates to a kind of automatic transmission, and it is applicable to all motor vehicle speed changes.

Background technique

The automatic transmission of using with present car is example, and it is made up of many groups clutch plate, realizes separating and combination by the chip controls hydraulic system, relies on the friction driving between many group clutch plate.The transmission moment is little, wear extent is big, oil consumption is high, complex structure, and the maintenance difficulty is not little, and a lot of parts need the use special devices to detect, and promptly manufacture and the maintenance cost height.Other model vehicle is installed and used and is had narrow limitation relatively.

Summary of the invention

The utility model purpose provides a kind of simple in structure, motor vehicle automatic transmission that cost is low, easy to maintenance.

In the utility model gearbox, be provided with a driving shaft and a velamen moving axis, some groups of speed change gears are arranged in the gearbox, every group of speed change gear is fixing and can not produce displacement on axial direction with axle.

I retaining driving gear is ordinary gear, and it is fixedlyed connected with driving shaft; All the other respectively keep off the driving gear center and inlay a rolling bearing that is connected with driving shaft respectively, fix the ratchet gear ring of an even number of teeth in each mainshaft gear one side, fix a driving disc on the central principal axis in the ratchet gear ring, there are two C type holes in the driving disc outside, the ratchet of swing part one end inserts C shape hole, swing part is connecting a returning pull-spring, and the extension spring the other end is fixed on the driving disc card.The tension spring tension size of each gear swing part correspondence is different designs, and is corresponding with each group centrifugal force size that driving disc produced.

Except that last retaining driven gear, all the other respectively keep off the driven gear center one group of single direction ratchet clutch are set, and the interior circle of driven gear is provided with the ratchet perforation of the even number of teeth.Fixedly install one and the corresponding driven disc of ratchet perforation on the driven axle, the driven disc peripheral edge has the C shape hole of two symmetries, after two light ratchets are inserted C type hole respectively, is in normal bonding state with hook tooth under wire spring control.Last retaining driven gear is an ordinary gear, and it is fixedlyed connected with driven axle.

Above-mentioned swing part is for there being the handle shape, and an end of handle is a ratchet.The other end of swing part can also be provided with flyball again, and the handle bar between ratchet and the flyball also can be arc.Handle bar shape why no matter all is connected with returning pull-spring near an end of ratchet.

The utility model produces the difference of centrifugal force size according to the motor different rotating speeds on the driving disc swing part, thereby realizes the automatic speed changing of different gears.

The ratchet of swing part and the combination of hook tooth or the principle of separating on the driving disc:

1. driving disc and hook tooth sense of rotation in the same way, irreversible to (promptly nonreversible).

The ratchet of 2. specific gear swing part and hook tooth are under the situation of centrifugal force less than the spring tension that designs in advance, for normal separated state is neutral.

3. under the ratchet of swing part and the hook tooth bonding state, the angular velocity of hook tooth rotation is done the override type running and also is neutral during greater than the angular velocity of driving disc rotation.

4. under the ratchet of swing part and the hook tooth bonding state, driving disc rotation and hook tooth rotate when synchronous, are this gear normal working, and output is used as power this moment.

The working principle of driven gear device part:

1. the hook tooth of driven gear endoporus should bear the moment of torsion from driving gear, also will teach the light ratchet of moment of torsion to the driven disc outside, thereby driven axle is rotated.

When 2. driven axle drove the driven disc rotational angular greater than driven gear (hook tooth) rotational angular, the light ratchet lost original effect and only slides along hook tooth, and promptly transmitting torque work load is not zero override type running, and this moment, this group gear was the neutral position.

When 3. driven gear (hook tooth) angular velocity was more than or equal to the driven disc rotational angular, the place gear was a working state, and output promptly is used as power.

The good effect that the utility model produces is: control the automatic separation of speed changer or be attached to corresponding gear according to the engine throttle size, system architecture is simple, and driving operation is easy.When each gear combination or separation, gearless engagement sound, no neutral is excessive, does not disorderly keep off, and off-gear does not have a gear all the time at real time execution.More show at rugged road traveling its superiority not hinder the coast of vehicle in the normal operation, fuel-economizing about 25% at that time.

Description of drawings

Fig. 1 the design automatic transmission case transmission system

Fig. 2 follower single direction ratchet free wheel device front

Fig. 3 swing part

Fig. 4 is furnished with the driving disc in symmetrical C shape hole

The pawl-and-gearing tooth bonding state of swing part on Fig. 5 driving disc

The pawl-and-gearing tooth separated state of swing part on Fig. 6 driving disc

Fig. 7 I retaining power transmission process schematic representation

Fig. 8 II retaining power transmission process schematic representation

Fig. 9 gravity process schematic representation that drives up

Embodiment

Basic structure of the present utility model as described above, in addition also of particular note:

1, an end of swing part is ratchet (14), and ratchet (14) is assemblied in C type hole (18); The other end of swing part is flyball (15), is bow (16) between ratchet (14) and the flyball (15).About 1/3rd places of close ratchet (14) one ends of camber bar (being about 1/3rd places of swing part) are connecting a returning pull-spring (13), and extension spring (13) the other end is fixed on about 1/3rd places of driving disc radius.Extension spring (13) the pulling force size of each gear swing part correspondence is different designs, and is corresponding with each group centrifugal force size that driving disc produced.The ratchet of swing part (14) and hook tooth in conjunction with or the working principle of separating be: the centrifugal force that produces when the driving disc rotation is during greater than swing part extension spring (13) design pulling force, swing part flyball (15) is under action of centrifugal force, center, C type hole (18) with ratchet (14) place is that outwards swing in the center of circle, ratchet (14) is most advanced and sophisticated to be combined with hook tooth, as Fig. 5; When the centrifugal force of driving disc rotation generation designed pulling force less than extension spring (13), the combination of ratchet (14) discord hook tooth was as Fig. 6.

2, light ratchet (17) parts are compared with swing part, are light ratchet (17) after the bow (16) of swing part and flyball (15) are left out, and that is to say that ratchet (14) structure of light ratchet (17) and swing part one end is identical.The certain amplitude swing can be done in the tip of light ratchet (17) and ratchet (14) in the opening in C shape hole (18).

3, driven disc structure and driving disc structure are basic identical, and the main distinction is that driven disc is installed on driven axle (4), and driving disc is installed on driving shaft (1), thereby has produced difference nominally.

Specifying speed change of the present utility model below in conjunction with accompanying drawing realizes:

Referring to Fig. 1 that to have four groups of speed change gears be example and referring to Fig. 2: arrive driving shaft (1) from the input power of motor, suppose 500 rev/mins of driving shaft rotating speeds, light ratchet (17) ratchet mechanism (5) that I retaining driving gear (2) drives in the I retaining driven gear (3) rotates, thereby driven axle (4) entry into service, promptly the I retaining is in effective working state.

Swing part (7) on II retaining driving disc (6), III retaining driving disc (8), IV retaining driving disc (10) and the driving disc outside, (9), (11) are under the pulling force control of extension spring (13) simultaneously, flyball (15) can not be swung, location status as shown in Figure 6, this moment, II, III, IV retaining was neutral.

I retaining power transmission process as shown in Figure 7.

Suppose that engine speed rises to 1000 rev/mins, the ratchet (14) in II retaining driving disc (6) outside is most advanced and sophisticated under flyball (15) drives, with the center in the C shape hole (18) at ratchet (14) place is that the center of circle is made arc and put outward, combine (pulling force of II retaining driving disc swing part returning pull-spring this moment (13) is less than its suffered centrifugal force) with II retaining hook tooth, thereby the II retaining driving gear that is fastened on ratchet gear ring one side drives the running of II retaining driven gear, does the output of II retaining raising speed power under the effect of single direction ratchet clutch.This moment is in I retaining driven gear (3), pawl clutch mechanism does the override type running, the angular velocity that is driven axle (4) rotation keeps off the angular velocity that driven gear (3) rotates greater than I, rotates so the light ratchet (17) under the sliding state can not drive hook tooth, and I retaining gear torque is the zero neutral that becomes.

II retaining power transmission process as shown in Figure 8.

Suppose that throttle further is increased to 1500 rev/mins, III stops beginning work.The IV retaining remains separated state.The I retaining driven disc and the II retaining driven disc that act on this moment on the driven axle are done the override type running, and light ratchet (17) slides on hook tooth, and each retaining is neutral.

When throttle was increased to the operation of IV gear, because of in driven gear (12) hole pawl clutch not being set, it directly was fastened on the driven axle (4).So IV gear driving ratchet tooth was done the override type rotation when vehicle quickened (descending) at gravity, each gear is neutral.

Gravity drives up process as shown in Figure 9.

Therefore for the safety of descending and reversing, can establish 1 to 2 group in addition and manually keep off, in particular cases using.

This speed changer is in normal vehicle operation, and along with engine speed just changes, each gear reciprocation cycle is separated and combination voluntarily, thereby realizes automatic speed regulation.

Claims

1. energy-conservation automatic over-drive gear transmission, some groups of speed change gears and driving shaft and a velamen moving axis are arranged in its gearbox, driving gear in every group of speed change gear and driving shaft is fixed and can not produce displacement on axial direction, driven gear in every group of speed change gear and driven axle is fixed and can not produce displacement on axial direction is characterized in that:

A. except that the first retaining driving gear, all the other respectively keep off the driving gear center and inlay a rolling bearing that is connected with driving shaft respectively, fix the ratchet gear ring of an even number of teeth in each mainshaft gear one side, fix a driving disc on the central principal axis in the ratchet gear ring, there are two C type holes in the driving disc outside, the ratchet of swing part one end inserts C shape hole, swing part is connecting a returning pull-spring, the extension spring the other end is fixed on the driving disc card, the tension spring tension size of each gear swing part correspondence is different designs, adapts with each group centrifugal force size that driving disc produced;

B. except that last retaining driven gear, all the other respectively keep off the driven gear center one group of single direction ratchet clutch are set, the interior circle of driven gear is provided with the ratchet perforation of the even number of teeth, fixedly install one and the corresponding driven disc of ratchet perforation on the driven axle, the driven disc peripheral edge has the C shape hole of two symmetries, and two light ratchets are in normal bonding state with hook tooth after inserting C type hole respectively under wire spring control.

2. energy-conservation automatic over-drive gear transmission according to claim 1 is characterized in that: the other end of swing part is a flyball, is connected as a single entity by bow between flyball and the ratchet, and the camber bar is connecting returning pull-spring near an end of ratchet.