Pedal drive (versions)

FIELD: transport.

SUBSTANCE: invention relates to pedal drive for, primarily, rollers. Proposed drive comprises pedal 1, mechanism with flexible links 10, and free run mechanisms 9. Free run mechanism pulleys 19 are arranged in pairs on running axle 12 articulated with pedal and axles 6 of actuators. Gear ratio is changed with the help of movable lever 2 and extra different-diametre drive interjointed pulleys that may be jointed together and detached fast.

EFFECT: higher efficiency of drive.

16 cl, 2 dwg

 

The claimed technical solution is a mechanism for converting a reciprocating rotary or reciprocating movements of small amplitude and frequency in the fast rotational motion of the Executive bodies. It is intended primarily for use in devices that are powered by human muscle force, such as individual vehicle type roller skates and skateboards, as well as for simulators and other devices.

The actuator includes a foot pedal or other item for the perception of the external forces - the handle, the slider and the like, and a transmission connecting the element with the Executive bodies of the devices, such as roller skates.

Overview of the known solutions and the analysis of the requirements to the pedal actuator are given in EN 2274576 C2.

Main findings:

for the convenience of the user, the pedal should have two hinged with an average location of the axis of swing;

- due to the large dynamic loads from the weight of the user, severe size limitations, having a large gear ratio and the complexity of operating conditions (dust, sand, moisture) for the first stage of the transmission, where the greatest load, the preferred mechanism with exible links. And such, in which transmission of torque is not for MF is t friction between the flexible elements and pulleys, and by fixing the ends of the flexible elements at the leading pulleys;

- for this reason, of all types of flexible connections only apply tape and rope. Because in the future the term "mechanism with flexible links" refers only tape or cable transmission, the term "flexible" - only tape or rope (cord) of flexible high strength material;

to achieve the necessary speed of the Executive bodies in the majority of cases the second stage of the transmission - multiplier. By reducing loads the first stage as the second stage may use a variety of mechanisms, including timing.

All these findings are implemented in EN 2274576. However, this technical solution has disadvantages, namely:

- availability of speakers up transmission parts, increasing the size of the device and creates inconvenience for the user.

the transmission connects the pedal with only one Executive body - the rear pair of rollers. When turning the foot forward and moving the center of pressure on the toe of the pedal force of pressure on the rear rollers decreases rapidly, until their separation from the road, causing slippage of the rollers;

in the given dimensions of conventional timing mechanism able to provide only a small gear ratio transmission that limit the AET high-speed capabilities of the device;

- does not provide the ability to quickly change the gear ratio of transmission.

As the closest analogue is selected design pedal drive from RU 2067481 C1, corresponding offer on the greatest number of features. In this actuator hinge when the pedal is in the middle part, the transmission includes a mechanism with flexible connections and mechanisms of free running, connects the pedal with both the Executive bodies of the device and has a bilateral action (direct and reverse strokes of the pedal). As the mechanism with exible links used two polyspast with multiple pulleys each and a common flexible element thrown over the Central pulley. Tackles perform the functions of both the first and second stages of transmission: through the distribution of efforts legs for a few pulleys and segments of the flexible element reduces the load on these parts and because of the faster movement of the flexible element increases the gear ratio of the transmission.

The flexible element is fixed by their ends to the front and rear parts of the pedal near the axis of its fastening. He freely moved through a few supporting pulleys, not transmitting torque, and is wound on the driving pulleys (drive drums)that transmit the torque on the axis of the Executive bodies. Supports the s pulleys are dispersed along the length of the device and installed each on its own axis of rotation. Some of them, namely the movable pulleys mounted on the pedal and move together with it; the other part is fixed pulleys mounted on the frame of the device. Leading pulleys mounted on the axes of the Executive bodies and connected with these axes through mechanisms of free running. Executive bodies - two pairs of rollers - bonded with the axes.

Disadvantages the closest equivalent:

in fact pillar mount the pedals, as its second pillar is the brake, accidental clicking on which will lead to involuntary inhibition. This disadvantage is overcome in EN 2274576 and therefore is not considered further;

- the transfer of torque through the friction between the leading pulleys and a flexible element, without fixing the past, will inevitably lead to slippage of the flexible element, and means for reducing the useful pedal. This disadvantage is also addressed in EN 2274576;

- dispersed single control sheaves complicates the design and greatly reduces the gear ratio of the transmission, as with the approach to the axis of the pedal is the amplitude of the movements of movable pulleys decreases rapidly;

- consolidation of movable pulleys and the ends of the flexible element directly on the pedals makes it impossible for the conclusion of the transmission in a closed housing with purpose of protecting it from external influences (dust, moisture, foreign substances is their items);

- leading the pulleys have a large diameter, because within them are the axis of the Executive bodies. This reduces the gear ratio of the transmission;

Executive bodies bonded with their axes, and therefore the rotational speed of the Executive bodies of each pair and between pairs are always the same, which makes cornering of the vehicle, i.e. affects its handling;

- no measures to distribute spooled cable length leading pulleys. In the coils of rope will lie one upon the other, then slide off. The first will lead to irregular change of the gear ratio, the second to the jerks in the transmission;

- offer a "pinching" of the flexible element on the supporting pulleys can hardly provide reliable and quick, on the go, the change of the gear ratio of the transmission.

In the future, all the pulleys for transmitting torque will be called leading, because each of them is leading in relation to another pulley or the Executive body. The axis of rotation, performs a linear movement in the process will be called a movable axis, and on the pulleys is movable pulleys.

The technical result of the proposed solutions should be to improve the efficiency of the drive. The problem is solved by changing the kinematic scheme of the transmission. For e the CSOs in the known actuator, includes foot pedal, mounted articulated with the possibility of turns at a given angle to perpendicular to the pedal longitudinal plane, and the transmission, kinematically connecting the pedal with the Executive bodies of the device and including a mechanism with flexible connections and mechanisms of free running, according to the claimed solution

all movable supporting pulleys are placed on a common rolling axis of rotation connected to the pedal by means of, for example, a lever attached to the pedal near the axis of its mounting and located in the space between the Executive bodies of the device.

stationary support pulleys hosted on a shared axes, such as axes Executive bodies.

Close placement of the pulleys on a small number of axes simplifies the design of the transmission and allows to increase the gear ratio by providing the maximum possible displacement amplitude for all movable pulleys, and not just to the extreme.

Placing a movable axis and the points of fastening the flexible element on the lever extending from the pedal near the axis of its mounting and located between the axes of the Executive bodies, allows us to conclude the whole transmission in an indoor enclosure that provides protection from external impacts and do not increase the size of the device.

It should be noted that the supporting pulleys, the first osvezenih with them leading pulleys, are inclined to its axis of rotation. This provides a distributed winding cord flexible elements on the leading pulleys, which eliminates unpredictable changes of the gear ratio and the resulting jerks in the transmission.

Moreover, parts of the transmission that connects the pedal with a different, for example the front and rear by the Executive bodies or their groups, have different gear ratios, so you can choose the most convenient for the user, the ratio of the speeds of different Executive bodies.

In addition, the lever, which is fixed to the movable axis of rotation and the ends of the flexible elements firmly attached to the pedal. This is the most simple type of construction.

At the same time, these lever can be attached to the pedals with the possibility of turns relative to the pedal in a longitudinal plane at an angle specified by the rotation angle of the pedal, and the actuator is further provided with a steering lever, kinematically connecting the lever with a pedal and the housing of the device. This solution allows, in particular, to increase the amplitude of the movement fixed to the lever pulleys and the ends of the flexible elements, and means to increase the gear ratio of the transmission.

It is possible that the mechanism of turn of the lever is made with a fixed ratio of the angles of rotation of the lever relative to the PED is whether and pedal relative to the housing of the device. This option is the easiest to implement.

It is possible, however, that the mechanism of turn of the lever is made with the possibility of rapid changes in the ratio of angles of rotation of the lever and pedal through, for example, changes in the geometric parameters of the mechanism. This is the quick change gear ratio of transmission to bring it in line with the changing driving conditions.

This transmission includes an additional leading pulleys of unequal diameter mounted coaxially to each other, and the pulley of smaller diameter connected by two flexible elements mounted thereon and wound him in opposite directions, via the supporting pulleys front and rear axles, with a movable arm, and a pulley of larger diameter is connected to two additional flexible elements, also fixed on him and reeled him in opposite directions, with each of the leading pulleys Executive bodies. The presence of such pulleys significantly in proportion to the ratio of their diameters, to increase the gear ratio of the transmission or to reduce the number of support pulleys.

Moreover, additional lead pulleys can be permanently bonded together. This is the easiest for the execution of the option.

It is possible, however, that additional lead pulleys soy is inany between them with quick fastening - unfastening, and the drive mechanism includes a fastening - unfastening additional leading pulleys. This allows the user to choose from a number of possible gear ratios of the transmission most suitable for these conditions, i.e., to exercise "shifting".

It should be noted that the Executive organ of the mechanism fastening-unfastening of the pulleys is movable keyed connection. Also, they can serve as a sliding splined connection. Select the connection type is determined by the structural and mechanical considerations.

Moreover, additional lead pulleys can be installed on bonded with lever movable axis. This gives an additional gain in the value of the gear ratio.

However, additional lead pulleys can be installed on at least one fixed in the housing fixed axis. This solution facilitates the implementation of gear.

In addition, the leading pulley axes Executive officers are those axes for which each of them is connected by flexible elements via the supporting pulleys and possibly additional leading pulleys with a movable arm and is connected by a separate mechanism of a free motion with each of the set on it's Executive bodies.

Combining leading pulleys with leading axes allows you reduce the shape, the diameter of these pulleys, and thus, to increase the gear ratio of the transmission, and in conjunction with the equipment of each of the Executive body for its free-wheeling mechanism is to make the vehicle more convenient operation by improving its manageability.

While the mechanisms of free running, connecting leading axis mounted with the Executive bodies, placed in the hubs of the Executive bodies. This gives the possibility to increase the number of friction.

The claimed technical solution is illustrated by schemes 1 and 2. As an example, the selected drive for double track four skates. There are also options of two - and three-roller skates and other types of devices. Figure 1 presents the scheme of a drive with two driving pulleys on the axes of the Executive bodies and the two mechanisms of free running. Figure 2 - with two additional leading pulley on the movable axes, with the axes of the Executive bodies as the main leading pulleys and four mechanisms of free running. Shows side and top views (without pedals).

Digital signs in the figures: 1 - foot, 2 - arm, 3 - axle of the pedal, 4 - second bearing pedals, 5 - Executive bodies, 6 - axis rotation of the rollers, 7 - fixed wheel pulleys, 8 - stationary support pulleys, 9 - mechanisms of free running, 10 flexible front element is on the polyspast, 11 is movable supporting pulleys, 12 - movable axis of rotation 13 of the flexible element of the rear sheave pulleys, 14 - connecting flexible element 15 to the housing of the transmission, 16 - drive pulley of small diameter, 17 - additional drive pulley of large diameter, 18 and 19 additional flexible elements.

The pedal 1 and bonded with her movable arm 2 is attached to the axis of the pedal 3. A fixed reference position of the pedal is provided by the second support 4 under the heel of the pedal.

In the actuator 1, the rollers 5 are bonded with their axes 6. On the same axes freely installed stationary pulley - wheel 7 and the support 8, as well as the mechanisms of the free wheel 9, which connects the leading pulley 7 with the axes of the Executive bodies 6. Flexible element 10 connects the lever 2 via the supporting pulleys front axle 8 and the mobile support pulleys 11, freely mounted on bonded with lever movable axis 12, with the drive pulley of the front axle 7. Flexible element 13 connects the lever 2 via the supporting pulleys rear axle 8 and the mobile support pulleys 11 with the drive pulley of the rear axle 7. Flexible element 14 attached by their ends at the leading pulleys front and rear axles, and thrown across the movable supporting the pulley, is closed by a flexible connection, allowing its bilateral work. Each drive pulley attached two flexible element wound on the pulley in the opposite n the boards. They can be performed as a single flexible element attached to the pulley in its middle. The attachment shows dashes (conditionally).

The front pulleys and movable axes together with flexible elements 10 and 14 form a first sheave pulleys and gears, pulleys and rear movable axes together with the flexible elements 13 and 14 - second. All transmission is enclosed in a housing 15.

The function of the lever 2 can perform, for example, the rib pedal or rod frame. Design considerations stationary support pulleys 7 can be placed on the axes of the Executive bodies, and on a separate fixed in the housing axis.

The gear ratio of the transmission is equal to the number of revolutions of the rollers on one swing of the pedal forward or backward, is determined by the angle of rotation of the pedal lever length and the location of the attachment points of the flexible elements on it, the number of support pulleys in each variable geometry mechanism and the diameter of the leading pulleys. Selecting different for the front and rear pulley the location of the attachment points of the flexible elements, the number of anchor pulleys or the diameter of the leading pulley, you can get a transmission with different values of the gear ratio for the front and rear of Executive bodies.

The actuator 2 includes in addition to installed on a movable axis 12 leading pulleys 16 and 17. The lever 2 is connected to the flexible element is mi 10 and 13 via the supporting pulleys 8 and 11 with additional drive pulley of small diameter 16, not with the leading pulleys Executive bodies, as in scheme 1. In turn, additional drive pulley of large diameter 17 is connected to two pairs of fixed and flexible elements 18 and 19 with the leading pulleys Executive bodies, which serve as the axis 6. Each of the rollers is connected to the axle through a separate mechanism of a free stroke 9, located in the hub of the wheel.

Additional lead pulleys 16 and 17 may be either permanently connected or installed with the possibility of their fastening-unfastening. For example, using floating in the axial direction keys. In the first case, the transmission has one fixed gear ratio, the second two. If more additional pulleys of different diameters, the number of values of the gear ratio is determined by the number of such pulleys.

Additional lead pulleys can be installed on a single fixed axis or axes of the Executive bodies. In this scheme of their inclusion in the transmission does not change. In both schemes 1 and 2 movable arm 2 can be installed with the possibility of turns relative to the pedal in the longitudinal direction. This goal can be, for example, the rocker mechanism in which the lever is in the wings, and the slider is connected to the device. In this case, the gear ratio of the transmission will depend on the parameters of the mechanism of turn of the lever.

To prevent sagging of the flexible elements, due to their gradual traction, transmission may be provided with a tension device.

In the initial position of the center of pressure on the pedal is located between the axis of its mounting 3 and the rear pillar 4. Pedal and all pulleys fixed, but thanks to the mechanisms of a free motion you can move forward coasting.

When the transfer of the center of pressure on the toe of the pedal (Fig. he left) arm 2, 1, shifts the movable pulleys to the right, pulling the flexible element 10 of the front sheave pulleys. This causes the front drive pulley 7 to rotate clockwise. The rotation is transmitted by the freewheel mechanism 9 on the front axle 6 and bonded with her rollers 5. Skates are moving forward. At the same time flexible connecting element 14, naratiwas on the front drive pulley 7, causes the rear to rotate counter-clockwise, winding itself flexible element 13 of the rear sheave pulleys. Through the mechanism of free-wheeling rotation is not transmitted to the rear axle, the rear rollers are spinning forward in free running mode.

When the transfer of the center of pressure on the heel of the pedal lever moves the movable pulleys to the left and the opposite is happening. Flexible element 13 causes the rear drive pulley 7 to rotate clockwise. Naratiwas at him, the flexible element 14 rotates the front drive pulley counterclockwise is traci. Become major rear rollers, front spinning in the freewheel. Thus, at every movement of the feet becomes the leading one pair of rollers, which accounts for the greatest burden of the weight of the user.

The actuator 2 is characterized by the fact that pressing on the toe pedal pulling the flexible element 10 causes the rotating clockwise an additional drive pulley of small diameter 16 and bonded with him more pulley of large diameter 17. Through one of the flexible elements of the pair 18 clockwise rotation is transmitted directly to the front of the leading axle 6 and through the mechanisms of the free wheel 9 on the front rollers 5. At the same time one of the pair of flexible elements 19, naratiwas on the pulley 17 rotates the rear axle counterclockwise. Due to the mechanisms of a free motion 9 this rotation is not transmitted to the rear rollers.

With the return movement of the pedal movable axis 12 is shifted to the left. Pulling the flexible element 13 causes the rotating additional lead pulleys 16 and 17 in a counterclockwise direction. But due to the fact that the flexible elements 19 are cross, rear driven axle rotates clockwise. Become major rear rollers, front spinning in free running mode.

In drives of both schemes in any phase of the movement of rotation of the rollers ago is impossible, so what. the resulting force is transmitted to the pedal and locks the muscles of the leg, and in the initial position of the pedal - rear pillar. "Return" is missing, possible uphill.

"Shifting gears" by changing the angle of rotation of the lever or fastening-unfastening additional leading pulleys carried by hand and without removing the skates to his feet. Perhaps in motion.

In the scheme of figure 2 due to "private" mechanisms of free running rollers in each pair can rotate at different speeds. This facilitates the execution of turns without lifting the roller from the road, i.e. improves the controllability of the vehicle.

1. The pedal actuator, comprising a pedal, mounted articulated with the possibility of turns at a given angle to perpendicular to the pedal longitudinal plane, and the transmission, kinematically connecting the pedal with the Executive bodies of the device and including a mechanism with exible links and mechanisms free play
characterized in that all the mobile support pulleys are placed on a common rolling axis of rotation connected to the pedal by means of, for example, a lever attached to the pedal near the axis of its mounting and located in the space between the Executive bodies of the device;
stationary support pulleys hosted on a shared axes, such as axes Executive is lanov.

2. The pedal actuator according to claim 1, characterized in that the supporting pulleys, the first from the related leading pulleys are inclined to its axis of rotation.

3. The pedal actuator according to claim 1, characterized in that the parts of the transmission that connects the pedal with a different, for example the front and rear, the Executive bodies or their groups, have different gear ratio.

4. The pedal actuator according to claim 1, characterized in that the lever, which is fixed to the movable axis and the ends of the flexible elements firmly attached to the pedal.

5. The pedal actuator, comprising a pedal, mounted articulated with the possibility of turns at a given angle to perpendicular to the pedal longitudinal plane, and the transmission, kinematically connecting the pedal with the Executive bodies of the device and including a mechanism with a flexible coupling and mechanisms free play
characterized in that all the mobile support pulleys are placed on a common rolling axis of rotation connected to the pedal by means of, for example, a lever attached to the pedal near the axis of its mounting and located in the space between the Executive bodies of the device;
stationary support pulleys hosted on a shared axes, such as axes Executive bodies;
moreover, the lever, which is fixed to the movable axis of rotation and the ends of the flexible elements attached to the peda and with the possibility of turns relative to the pedal in a longitudinal plane at an angle, set the rotation angle of the pedal, and the actuator is further provided with a rotation mechanism mentioned lever, kinematically connecting the lever with a pedal and the housing of the device.

6. The pedal actuator according to claim 5, characterized in that the mechanism of turn of the lever is made with a fixed ratio of the angles of rotation of the lever and the pedals.

7. The pedal actuator according to claim 5, characterized in that the mechanism of turn of the lever is made with the possibility of rapid changes in the ratio of angles of rotation of the lever and pedal through, for example, changes in the geometric parameters of the mechanism.

8. The pedal actuator, comprising a pedal, mounted articulated with the possibility of turns at a given angle to perpendicular to the pedal longitudinal plane, and the transmission, kinematically connecting the pedal with the Executive bodies of the device and including a mechanism with a flexible coupling and mechanisms free play
characterized in that all the mobile support pulleys are placed on a common rolling axis of rotation connected to the pedal by means of, for example, a lever attached to the pedal near the axis of its mounting and located in the space between the Executive bodies of the device;
stationary support pulleys hosted on a shared axes, such as axes Executive bodies;
this transmission includes an additional wheel W is willow unequal diameters, mounted coaxially to each other, and the pulley of smaller diameter connected by two flexible elements mounted thereon and wound him in opposite directions, via the supporting pulleys front and rear axles, with a movable arm, and a pulley of larger diameter is connected to two additional flexible elements, also fixed on him and reeled him in opposite directions, with each of the leading pulleys Executive bodies.

9. The pedal actuator of claim 8, wherein the additional lead pulleys permanently bonded together.

10. The pedal actuator of claim 8, wherein said additional wheel pulleys are connected with quick fastening-unfastening, and the drive mechanism includes a fastening-unfastening additional leading pulleys.

11. The pedal actuator of claim 10, characterized in that the Executive organ of the mechanism fastening-unfastening additional leading pulleys is movable in the axial direction of the dowel connection.

12. The pedal actuator of claim 10, characterized in that the Executive organ of the mechanism fastening-unfastening additional leading pulleys is movable in the axial direction of the spline connection.

13. The pedal actuator of claim 8, wherein the additional lead pulleys mounted is bonded on with lever movable axis.

14. The pedal actuator of claim 8, wherein the additional lead pulleys installed on at least one fixed in the housing fixed axis.

15. The pedal actuator, comprising a pedal, mounted articulated with the possibility of turns at a given angle to perpendicular to the pedal longitudinal plane, and the transmission, kinematically connecting the pedal with the Executive bodies of the device and including a mechanism with a flexible coupling and mechanisms free play
characterized in that all the mobile support pulleys are placed on a common rolling axis of rotation connected to the pedal by means of, for example, a lever attached to the pedal near the axis of its mounting and located in the space between the Executive bodies of the device;
stationary support pulleys hosted on a shared axes, such as axes Executive bodies;
and leading the axes of the pulleys Executive officers are those axes for which each of them is connected by flexible elements via the supporting pulleys and possibly additional leading pulleys with a movable arm and is connected by a separate mechanism of a free motion with each of the set on it's Executive bodies.

16. The pedal drive 15, characterized in that the freewheel mechanisms housed in the hub of the Executive bodies.



 

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Motoneuron // 2067482
The invention relates to the construction of motoneurone

Roller skates // 2067481
The invention relates to sports equipment and can be used as individual sports vehicle for the movement of people on the roads with hard surface

Roller skates // 2060748

Roller skates // 2252051

FIELD: transport means with muscular drive, may be used for walking and in sports.

SUBSTANCE: roller skate has platform with user's foot fastener, rear and forward levers pivotally mounted on platform with their one ends for limited rotation. Drive roller is fixed through freewheel clutch on other end of one lever by means of pins and driven roller is positioned for free rotation on other end of other lever. Roller skate is further provided with drive roller drive formed as flexible linkage engageable during displacement with drive part fixed on pin, and drive for rotating levers to one another. Flexible linkage is directly fixed with its one end on forward lever and with its other end through lever rotating drive to flexible linkage coils. Lever rotating drive is made in the form of coil disposed on forward lever and spring-loaded in angular manner.

EFFECT: simplified construction of roller skate drive.

2 cl, 2 dwg

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