CN102537276A

CN102537276A - Elastic buffer device

Info

Publication number: CN102537276A
Application number: CN2012100589924A
Authority: CN
Inventors: 李凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-08
Filing date: 2012-03-08
Publication date: 2012-07-04

Abstract

The invention relates to an elastic buffer device, which is used for solving the problem of abortion caused by the existing gear transmission. When the elastic buffer device is used for automobile transmission, the elastic buffer device can replace the half-linkage function of the existing clutch and the goal of reducing manual labor is achieved. The method for realizing a gear is characterized in that the gear is different from the existing transmission gear and is provided with an elastic buffer mechanism, power on the periphery of the gear can be linearly transmitted to a transmission shaft or the power of the transmission shaft is linearly transmitted to the periphery of the gear, peripheral power is transmitted from a central shaft, the distance between a peripheral structure and the central shaft is fixed through a rolling shaft structure, the peripheral structure is enabled to rotate around the central shaft and a buffer structure takes a buffer effect.

Description

A kind of elastic buffering mechanism

Technical field

A kind of elastic buffering mechanism is a kind of device that when power engages, cushions and finally realize harmless transferring power.This device is applicable to that one of power source acquisition need passing through stable output can't harm and the power transmission field of field, the especially motor car engine of linear change power, can replace clutch semi-linkage function.

Background technique

At present; In the power transmission of the motor of most of automobile; All need pass through a series of parts comes the dynamic torque of motor output is handled; Thereby avoid motor to receive great resistance or automobile receives great impact force, problem such as reach the pause and transition in rhythm or melody sense that reduces even avoid the generation of automobile in processes such as starting, gearshift, stop working.In the process of the starting of automobile, gearshift; Existing most of automobile all is the degree of engagement of coming solenoidoperated cluthes through various manual works (MT) or intelligent computer modes such as (AMT), produces between the input end that makes clutch and the output terminal not exclusively to contact and skid; Thereby generation speed difference; Let frictional force increase gradually then and reduce speed difference gradually, finally realize synchronous shipowner, the purpose that reaches the smooth starting automobile or steadily shift gears.

The mode of this power transmission, in the middle of the automobile of manual retaining (MT), mainly the degree of engagement through artificial solenoidoperated cluthes realizes that this way has improved the amount of labour of driver in the process that drives a car; In electronic control manual (AMT), because electronically controlled stability, technically all be not so good as outstanding driver, and increased microcomputer system, shift impact is strong, starting is slow, the more high shortcoming of cost so exist.

In automatic catch (AT), then use torque converter to realize functions such as step gear shifting, torque converter is a kind of Fluid coupling, it can let engine and gearbox independently rotate separately.If automobile is waiting the red light engine idle, the rotating speed of engine is very low, and the torsion of its input torque transducer is just very little.So just can let automobile keep static as long as gently apply the brakes.Though this way need not manually to control the degree of clutch with respect to manual clutch, advantage be simple to operate, travelling comfort good; But,, also exist the cost height, safeguard that complicated, starting speed waits shortcoming slowly so that shortcoming is a fuel efficiency is not high, meanwhile because Fluid coupling exists the loss of energy.

The invention provides a kind of elastic buffer gear, be very different with existing gear on the structure, because resislient gear itself has elasticity; Can bear the elastic strain in the certain limit; So after adding this resislient gear, do not need on the one hand the combination degree of driver's solenoidoperated cluthes in the starting of automobile, shift process, on the other hand; Because almost there is not force of sliding friction; Can not cause the loss of automobile power output yet, and with low cost, be a kind of not only aspect but also economic elastic buffer gear.

Summary of the invention

A kind of elastic buffering mechanism is used to solve the pause and transition in rhythm or melody problem that existing gear transmission produces, and when being used for vehicle transmission, can substitute the function of the semi-linkage of existing clutch, reaches the purpose that reduces hand labor.The way that this gear is realized is: be different from existing transmission gear; Mechanism with a kind of elastic buffer can let the power linearity of outer gear rim transfer to transmission axle, and perhaps the power linearity with transmission axle transfers to outer gear rim; Peripheral power imports into from central shaft; Fix the distance of outer rim structure and central shaft then through the roller bearing structure, let the outer rim structure rotate around central shaft, buffer structure plays the effect of buffering.

A kind of elastic buffering mechanism, the locations of structures of its central shaft and outer rim transmission are fixing, and the middle roller bearing that passes through is connected with elastic material; Wherein, a side is the roller bearing structure, is used to support the outer rim structure around the central shaft rotation; Opposite side is a buffer structure, in the time of central shaft input driving force, can cushion driving force; Let the outer rim structure of gear receive a driving force that increases gradually, let central shaft also receive a resistance that increases gradually simultaneously.

In general example; The driving force position of central shaft and outer rim structure can oppositely be changed, that is: can be by central shaft as output, and the outer rim structure is as the part of directly importing driving force; It is identical to play buffer function, and the structural feature of this elastic buffer gear is following:

One, outer rim structure: this structure comprises various ways, can be gear, also can be sprocket wheel, does not have the belt wheel structure etc. of the friction driving of tooth even.

Two, roller bearing structure: this structure mainly is used for fixing the distance of outer gear rim structure and central shaft, can let the outer rim structure rotate around central shaft all the time.

Three, central shaft: be used to serve as input shaft, under a stable condition, can oppositely connect, be used to serve as output shaft.

Four: buffer structure: processed by padded coaming, be generally spiral spring, spring is one; Also can be a plurality of above spring assemblies; The force bearing point of spring is centered close on the central shaft, is in the position of how much symmetries, also can have elastomeric material for ball spring or rubber etc.

Description of drawings

Fig. 1 is the buffering side 45 degree views that elastic buffering mechanism removes shell;

Fig. 2 is the roller bearing side 45 degree views that elastic buffering mechanism removes shell;

Fig. 3 is the parts composition view that elastic buffering mechanism does not comprise shell;

Fig. 4 is the 45 degree plan views that elastic buffering mechanism comprises shell;

Fig. 5 is the change in torque figure in the pyrotechnical actuator power transmission process;

Fig. 6 is the change in torque figure in the elastic buffering mechanism power transmission process.

Embodiment

Fig. 1 is the buffering side 45 degree views that the elastic buffer gear removes shell, and in Fig. 1, middle axle construction is 101 and 102; The 101st, the axis groove, spiral spring can be fixed an end through inserting groove, and the 102nd, spline can mesh (this form also can be first-class for the output shaft that is directly welded in the transmission carrier) with splined shaft on the transmission carrier; Buffer structure is 201 and 202, and spiral spring 201 twines with spiral spring 202 each other, and all there is hook in the inboard and outside; Hook is used to insert the axis groove, and the outer rim structure is 301,302 and 303,301 to be that (this form can be other shape to sprocket wheel; Like gear, belt wheel etc.); 302 is the outer ring fixed groove, and 303 is the outer rim groove, can spiral spring 201 is fixing with spiral spring 202.

After as shown in the figure installing; Spiral spring is the parts that can produce than large deformation; Can let the parts of whole outer rim structure rotate around middle axle construction, but this rotation must have certain condition, this condition is: the elastic force that overcomes spiral spring; Because the elastic force of spiral spring is to increase along with the increase of deformation; So it is big more around the angle of middle axle construction rotation to work as the outer rim structure, the elastic force of spiral spring is just big more, and the resistance that this moment, outer rim structure continuation rotation was obtained is also big more.If active force is put on middle axle construction, this process is still set up.

As everyone knows, existing Motor Vehicle manually keeps off, when starting and gearshift; Need be by clutch, and the driver is in operated clutch, be not only directly to enter into or unclamp; But need slowly enter into, know that automobile gets into semi-linkage, and then slowly unclamp; This operation of slowly entering into and slowly unclamping for a new hand, is very difficult to control; Because new hand for the assurance of the access point of clutch and bad, very likely causes the motor of automobile because rotating speed is lower than the minimum speed of motor and causes stopping working during the power of load automobile; For an exper ienced driver, though when carrying out the semi-linkage operation, can well get hold of access point, on the road of urban district stop-go, repeating the semi-linkage operation continually also is a work that expends very much muscle power.

Effect of the present invention is to reduce on the one hand and reduces the driver's experiences demand, reduces driver's work on the other hand; In this figure, when vehicle starting, the driver directly is totally released clutch; The power of motor car engine imports into to automobile castellated shaft through clutch, transfers to whole middle axle construction through spline 102 again, and axle construction has had rotating speed identical with splined shaft and moment of torsion in this moment; Rotating speed and the moment of torsion of this moment through spring in the buffer structure 201 and spring 202 bufferings, transfer to the outer rim structure again; The outer rim structural bearing and is come from inertia of automobile own and the resistance that produced of friction, because spring 201 can produce deformation with spring 202, so when the rotating speed of automobile and moment of torsion pass over; Can at first let spring 201 and spring 202 that the deformation of a crimping property takes place; Also become big gradually greatly because the moment of torsion of spring transmission is the change along with the deformation degree, become big moment of torsion gradually so the outer rim structure can obtain one, the effect of power is mutual simultaneously; Middle axle construction also can obtain one and become big moment of torsion resistance gradually; Because this moment of torsion resistance is As time goes on and gradually to become big, so motor car engine in this process, can not cause stopping working because of the huge inertia of automobile.When moment of torsion greatly to can let automobile remain a constant speed to go the time, the moment of torsion that automobile output torque and outer rim structure are obtained equates that length of spring compressed to carrying this moment is the degree of moment of torsion at this moment.When automobile quickened or slows down, corresponding deformation was carried out in the meeting of spring, came the moment of torsion of balanced engine output.

Fig. 2 is the roller bearing side 45 degree views that the elastic buffer gear removes shell; In Fig. 2, sprocket wheel 301 is responsible for the moment of torsion and the rotating speed of motor are passed to wheel, converts the driving force of Motor Vehicle into; This kind form is merely a kind of form of power transmission; According to different Motor Vehicle, different modes is arranged, as: what large car mainly adopted is the mode of transmission shaft; One time of the car employing all is directly to use gear transmission; What dillies such as motorcycle adopted is chain transmission, so these parts are sprocket wheel; What the part farm machinery adopted is belt, so this place can be to be designed to belt pulley.The change of the form of above transmission does not all change whole principle of the present invention.302 is the outer ring fixed groove, in order to form the track of a ball motion, lets ball 204 can be close to orbital motion; The quantity of ball can be for a plurality of; Relative fixed-site between the different balls, fixed method are ball cover 203, and the structure of ball cover is a bar shaped; One side is jagged, can allow roller bearing in the middle of breach, to rotate.

The effect of whole ball 204 and ball cover 203 is to reduce the frictional force between outer rim structure and the middle axle construction, keeps the outer rim structure to rotate around middle axle construction simultaneously, and does not squint.Because Motor Vehicle most of the time in the process of going is not a uniform motion, have frequent acceleration and accelerated motion, so in this process, need the attitude that a thing keeps this middle axle construction and outer rim structure relative rotary motion.

Fig. 3 is that the parts of elastic buffering mechanism are formed view, and in Fig. 3,201 and 202 are spring; This part can replace with common spring in the part instance, 204 is ball, and the quantity of ball does not limit; Can how also can lack, the effect of roller bearing is to keep the relative rotary motion of outer rim structure and middle axle construction, and 203 is the ball cover; Be complementary with the quantity of ball, effect is the distance between the fixing different balls, and 301 is sprocket wheel; In addition this form can also be other the various forms that comprises gear, transmission shaft, and 302 is the outer ring fixed groove, is used for fixing the orbit of ball; 303 is the outer rim groove, be used for fixing spring the position of outer end on outer ring fixed groove 302, this form can also fix, weld the technique for fixing that can use without creative work such as fixing for screw in instance.101 is the axis groove, is used for fixing the position of inner segment on middle axle construction of spring, and this form can also fix, weld the technique for fixing that does not need performing creative labour to use such as fixing for screw in instance.102 is spline, is used to conduct the power from motor.

Fig. 4 is the view that elastic buffering mechanism comprises shell, and in Fig. 4,205 is lid, lid be shaped as patty, be used to stop the outside to comprise that dust, water etc. influences the material of device stability and flexibility, play the effect of protecting internal structure.

Fig. 5 is the change in torque figure in the pyrotechnical actuator power transmission process, and in Fig. 5, what t represented is the time, and what s represented is moment of torsion; The moment of torsion of motor output is a, because pyrotechnical actuator itself all is to have solid to process, and the deformation of solid and small; We can ignore, so the power transmission of power is fully directly to transmit, i.e. motor transmission is how much power; Automobile has identical power equally, so in this process, as long as the moment of torsion of motor transmission remains on a inconvenience; The terminal moment of torsion that obtains of its transmission device remains a equally, and this moment of torsion As time goes on, do not change; When the change in torque of the output of motor, the terminal moment of torsion that obtains of transmission device keeps changing equally, and the scope and time that change are identical with the change in torque of motor.

Fig. 6 is the change in torque figure in the elastic buffering mechanism power transmission process, and in Fig. 6, what t represented is the time, and what s represented is moment of torsion; The moment of torsion of motor output is a, because this spring bumper has a buffer structure in the middle of itself, this structure is processed by spring; So when the moment of torsion of motor was output as a, automobile needed acceleration because of static to motion, this acceleration needs consumption of power; So in this process, deformation can take place spring, the torque transfer of motor can at first overcome the elastic strain of spring; The elastic strain of knowing spring arrives to a certain degree, can not need continue deformation and till during the moment of torsion of Transmission Engine, in such process; The outer rim structure of damping device obtains moment of torsion, is that the moment of torsion of motor deducts and lets the moment of torsion that spring deformation consumed, because the deformation of spring has an elasticity coefficient; Motor is one by the moment of torsion that is consumed of spring deformation and becomes big variable gradually, so when the motor transfer of torque is a, begin most in a flash; The moment of torsion that output terminal obtains is 0, and directly As time goes on, the deformation of spring is increasing; Finally the deformation degree is mated the moment of torsion of motor, and this moment, spring kept the shape relative fixed, and the end of damping device obtains one and the identical moment of torsion a of motor.

In this process, the end of damping device obtain one with the needed time of the identical moment of torsion of motor, depend on the elasticity coefficient of middle springs, and the moment of torsion when driving the needed equinoctial point of the unladen mass of whole Motor Vehicle.

Claims

1. an elastic buffering mechanism is used to solve the pause and transition in rhythm or melody problem that existing gear transmission produces, and it is characterized in that: the locations of structures of its central shaft and outer rim transmission is unfixing; The middle roller bearing that passes through is connected with elastic material, and wherein, a side is the roller bearing structure; Be used to support the outer rim structure around the central shaft rotation; Opposite side is a buffer structure, in the time of central shaft input driving force, can cushion driving force; Let the outer rim structure of gear receive a driving force that increases gradually, let central shaft also receive a resistance that increases gradually simultaneously.

2. elastic buffering mechanism according to claim 1 is characterized in that: middle buffer structure is an elastic material, can be the ball spring, also can be spiral spring, can also be that other have certain flexible material; The quantity of spring can be one, also can be for a plurality of, and the geometrical center of a plurality of springs is positioned at jack shaft.

3. elastic buffering mechanism according to claim 1 is characterized in that: the transmission of power can be that therefrom axle construction is imported into, spread out of from the outer rim structure again, and also can be to import into from the outer rim structure, therefrom axle construction spreads out of.

4. elastic buffering mechanism according to claim 1; It is characterized in that: middle axle construction can be spline; Also can be transmission shaft, or directly directly middle axle construction is connected in the output of power or the structure of output terminal with other that comprise welding, mold.

5. elastic buffering mechanism according to claim 1 is characterized in that: the outer rim structure can be a sprocket wheel, also can be gear, belt wheel or other existing structures that are used for transmission.

6. elastic buffering mechanism according to claim 1 is characterized in that: the roller bearing structure can be ball, and perhaps other can let the structure that the outer rim structure is rotated with respect to axis.