Bicycle frame

FIELD: transport.

SUBSTANCE: invention relates to foot crank mechanisms. Cranks 6 are keyed to shaft 16. One spacer ring is fitted on shaft 16 while another one is fitted in bicycle frame carriage assembly. Inner ends of cranks 6 thrust against each other via inner races of carriage assembly bearings and via spacer ring on shaft 16. Outer races of bicycle frame carriage assembly bearings thrust against each other via spacer ring fitted in bicycle frame carriage assembly. Con rod angular displacement relative to crank within the limits of 45 degrees in vertical position of cranks is limited by inner surfaces of con rod via shockproof spacers.

EFFECT: accurate positioning, reliable operation.

6 cl, 13 dwg

 

The invention relates to the production of bicycles, in particular racing bikes.

For racing bikes fundamental requirements for structural elements is to provide high installation precision and reliability of fastening of the cranks on the shaft of the carriage and transmission of muscular effort of the legs of the cyclist on the rear wheel of the bike with the highest possible efficiency. Another important requirement for the design of the bike is the provision of high technology of its manufacture and Assembly.

Transfer the muscular effort of the legs of the cyclist on the rear wheel of the bike with the highest possible efficiency is obtained by optimization of the design of the carriage of bicycles, consisting of a ball bearing hub and crank system, determining the accuracy and reliability of fastening of the cranks on the shaft of the carriage, in which the axis of the pedals and the axis of the shaft parallel and lie in the same plane, and by way of the seat of the rider, providing its user-friendly and efficient pedaling, in which the optimal distance between the planes of rotation of the right and left pedals, due to the location of the hip joints, allows the pressure on the pedals strictly in the vertical direction, by using muscle power in the legs, and about the optimum length of the cranks, due to the length of the legs of the cyclist when they are flexion and extension, allows for long-term power pedaling with high frequency.

In the formation of torque on the carriage of bicycles decisive role is the length of the cranks in their horizontal position, when the maximum muscular force is used the legs of a cyclist at a pressure of one foot down on one of the pedals while simultaneously pulling up another pedal up in a strictly vertical directions. When the vertical position of the cranks, the so-called "dead zone", the torque is equal to "0". One way to further increase the torque on the carriage of bicycles is the application of leading elliptic gears and cranks having upright well-defined optimal length, due to the length of the legs when they are flexion and extension, and horizontal is increased without changing the optimal distance between the planes of rotation of the pedals, allowing you to send the muscular effort of the legs of the cyclist in a strictly vertical directions.

Known carriage racing Bicycle, consisting of two nodes:

ball bearing hub and crank system (Lubowicki VP Racing bikes. - Leningrad, Mashinostroenie, Leningrad branch, 1989, p.64-69, 166-167). Sarykopa repnikovy node carriage includes a shaft, the left and right cups, which are installed on the thread in the body frame of the bike and with the shoulder of the shaft form a ball tracks, which are located in bearing balls. The axial position of the Cup is fixed by nuts. Crank the system consists of left and right cranks, which are attached to the shaft of the carriage on the mating wedge surfaces of the square hole with screws with washers and top gear.

Mount the cranks by means of bolts leads to periodic weakening of torque and the emergence of a backlash, leading to axial oscillation of the cranks, which dramatically reduces the dynamic characteristics of the bike. The adjustments mounting cranks in the process of races is virtually eliminated due to the irreparable loss of time. To manufacture parts ball bearing host and assembling them to meet high requirements for strength, durability and precision, resulting in a decrease in workability. Square joint shaft with the crank results in uneven distribution of loads from the current torque and the crushing faces of the crank that eliminates periodic tightening of bolts and padimonium of cranks, thus reducing the distance between the planes of rotation of the pedals and breaking the parallelism of the axes of the pedals with the axis of the shaft of the carriage, and apply it to what's window leading gears does not allow more torque.

Also known carrier of a Bicycle (patent US20060112780 A1 from 1.06.2006,), in which by means of the threaded connection with the nut via a thrust bearing has two supports with bearings, in which is placed a shaft, on the right side which, through a splined connection, pressed right crank, and on the left side, through the splined connection free boarding, has left crank bolt and two tightening screws.

The installation stops, which are placed in the outer casing bearing, through a thrust bearing with threaded connection and prop nut cannot ensure full alignment of the bearings and reduces their life time, and manually adjust ball-bearing site by pocomania the left crank to the inner race of the left bearing to eliminate axial clearance with subsequent fixation of the two tightening screws is subjective, which also reduces the life of the bearings. The splined joint of the left crank to the shaft of the carriage due to the difficulties of precise manufacture of the mating surfaces and the connection of a small part of the left crank shaft with a round cross-section and free planting may not provide enough parallelism of the axes of the pedals with the shaft of the carriage and their arrangement in one plane, and the additional compression of split cha the tee left crank tightening the screws causes in operation to periodic weakening of their torque and the emergence of angular backlash and, as a consequence, excessive dynamic loads on the spline connection and a slice of connecting protrusions in the body of the left crank.

The closest analogue (prototype) of the claimed invention disclosed in the patent US 5636554 A, which is a known carrier of a Bicycle, including a leading gear wheel and the shaft connecting the two crank mounted with two rods, each of which is placed on the outer side of the crank with the possibility of free angular movement of the rod relative to crank up to 90 degrees in a horizontal position, limited by a screw mounted in the crank, and the inner surfaces of the connecting rod.

The location of the rod in the same plane with the crank, and with its outer side, leads to the increase of the distance between the pedal and the crank, which reduces the rigidity of the structure and forces us to raise the feet of the athlete in hand, and, as a consequence, the pressure on the pedal is not in a strictly vertical direction, and at a slight angle, which leads to a distortion of pedaling and reduction of the pressure force on the pedal. The angular limit rotation of the rod relative to the crank is screwed into the crank screws for each turn of the crank gets two opposite impact of restrictive neckline rod. If we assume that in time the I training exercises an athlete every day passes for 2 hours with a frequency of pedaling at 100 rpm, it is easy to calculate that for the first 45 days stop screw with its small contact area will receive more than 1,000,000 hits from two opposite sides and loosen, deformed and gets out, which will lead to jamming of the rotation of the rod relative to the crank, and the small contact area of the circular cutout of the rod will receive significant deformation. As can be seen from the diagram the circular movement of the crank to the shaft of the carriage when moving the pedal down, the distance from the axis of the pedal shaft to the carriage is increased, and when moving the pedal up - reduced, i.e. how much increased torque on the shaft of the carriage when moving the pedal down, so he and decreases when moving the pedal up, which casts doubt on the effectiveness of this design. In addition, excessive angular displacement of the rod relative to the crank from 0 to 90 degrees lead to inconvenience pedaling with high frequency. Application recoil leads to unproductive effort of the cyclist on the torsion or tension springs, which significantly reduces torque on the shaft of the carriage of bicycles, and the use of "springless" rod without limiting its angular movements will lead to a significant angle (up to 180 degrees) and linear movement axes PE the Ali relative to the crank (especially during acceleration from the start, with rotation, or when driving uphill, when the rider stands up and is making every effort to one of the pedals down, while pulling the other pedal up). In addition, significantly increase the overall dimensions and weight of rods.

Also known carrier of the bike with the cranks on the right of which has a leading ellipse gear (US patent 7749117 B2 06.07.2010,). To reduce effort in the upper and lower positions major (long) axis of symmetry ellipses gear is located at an angle of 90 degrees to the axis of symmetry of the right crank, and with the advent of the moment of inertia during rotation of the cranks is shifted by an additional angle in the course of their rotation.

The alignment of the muscular effort over a full turn of rods leads to increased efforts to pedal shaft in the horizontal position of the cranks, and decreased effort in their vertical positions. But in the lower and upper positions of the cranks there is no need to reduce the torque by reducing the gear ratio between the leading and driven gears, since in this position of the cranks, the so-called "dead zones"that there is no formation of torque and an automatic increase in the reduction ratio in the horizontal position of the cranks will need the STI to make increased efforts to pedals, to get the original torque on the carriage of bicycles.

The technical result of the proposed solutions to provide the most accurate installation and the reliability of mounting of the crank shaft of the carriage and increasing the life of bearings, the increase in torque on the shaft of the carriage of the bike, maintaining optimal usual, the distances between the planes of rotation of the pedals and the parallelism between the axes of the pedals and the shaft of the carriage in one plane, increasing reliability while limiting the angular movements of rods relative to the cranks.

The technical result is ensured by the fact that in the carriage of a Bicycle, comprising a crank system having a leading Ellipso gear, left and right cranks mounted left and right rods and ball bearing hub, mounted on a Bicycle frame having a shaft and two bearings, two elongated cranks rigidly connected by a shaft with a round cross-section with a set of cylindrical dowels all the way down the inner face planes of the cranks through the inner race of the bearings of the carriage in the spacer with the simultaneous focusing of the outer casing bearing carriage in a thrust bearing, with two connecting rod having a hollow shape, each of are placed in the same plane with crooked is ipom before him in the course of its rotation through the guide sleeve in the spacer ring on two bearings and fixed by means of the screw connection locking lid and zakontrolit from loosening the axle of the pedal with the ability free angular movement of the rod relative to the crank in the range of 45 degrees with the vertical position of the cranks and up to 90 degrees in their horizontal position, limited by the lug on the crank and the inner side surfaces of the connecting rod through the shockproof strip, reducing knock the bounding planes. To increase the reliability of design ball bearing node, installed in the Bicycle frame, and extend the service life of the bearings in the Bicycle frame in end-to-end, the bore in a single setup a seat for the outer cone bearing set thrust bearing using a press fit, and on the shaft of the carriage, between the inner rings of the bearings installed spacer sleeve on free landing, and both sleeves are exactly the same length due to the simultaneous flat grinding their face planes. To provide more torque on the right crank set leading ellipsa gear, the major (long) axis of symmetry which is at an optimum angle to the right crank. To ensure the parallelism of the axis of the pedal shaft and the carriage in each of the cranks through hole for external clamps bearings and a through hole for mounting the shaft of the bore with one hit, and each cylindrical rod h is b for the inner cone bearings and a threaded hole for the axis pedals are also made with one hit. To ensure the reliability of the attachment of cranks on the shaft of the carriage left crank mounted on the shaft with a round cross-section and tight fit to the complete alignment of the end planes. On a circular line contact at regular intervals blind bore holes, in which are mounted cylindrical dowels for tight fit and pressed bolt with washer. The right crank mounted on the shaft with a round cross-section and tight fit so that the shaft and seats for the outer cone bearing left and right cranks were in the same plane, and by a circular line of contact of the shaft and right crank at regular intervals blind bore holes, in which are mounted cylindrical dowels for tight fit and close the bolt with the washer all the way down through the inner race of the bearings of the carriage and spacer to the inner end of the left crank. To eliminate axial movement of the shaft the length should be slightly less (0.1-0.5 mm) total length of the cylindrical parts of the right and left cranks, inner cone bearing carriage and spacers.

Distinguishing features of the proposed device is that the two cranks rigidly connected by a shaft with a round cross-section with a set of cylindrical dowels all the way down domestic the end planes of the cranks through the inner race of the bearings of the carriage in the spacer with the simultaneous focusing of the outer casing bearing carriage in a thrust bearing, has two connecting rod having a hollow shape, each of which is placed in the same plane with the crank before him in the course of its rotation through the guide sleeve in the spacer ring on two bearings and fixed by means of the screw connection locking lid and zakontrolit from loosening pedal spindle with the possibility of free angular movement of the rod relative to the crank in the range of 45 degrees with the vertical position of the cranks and up to 90 degrees in their horizontal position, limited by the lug on the crank and the inner side surfaces of the connecting rod through the shockproof strip. Leading ellipsa gear is oriented relative to the right of the crank and set it so that at the location of the axis of the right pedal in the down position on a straight line with the center shaft of the carriage and the hip joint of the athlete on the bike its major (long) axis of symmetry is located at an angle of 90 degrees to the upper branch of the drive chain. In the Bicycle frame in end-to-end, the bore in a single setup a seat for the outer cone bearing set thrust bearing using a press fit, and on the shaft of the carriage, between the inner rings of the bearings installed spacer sleeve on free landing, and both sleeves are exactly the same length for the et simultaneous flat grinding their face planes. In each of the cranks through hole for external clamps bearings and a through hole for mounting the shaft of the bore with one hit, and each rod of the cylindrical portion to the inner cone bearings and a threaded hole for the axis pedals are also made with one hit. The left crank mounted on the shaft with a round cross-section and tight fit to the complete alignment of the end planes. On a circular line contact at regular intervals blind bore holes, in which are mounted cylindrical dowels for tight fit and pressed bolt with washer. The right crank mounted on the shaft with a round cross-section and tight fit so that the shaft and seats for the outer cone bearing left and right cranks were in the same plane, and by a circular line of contact of the shaft and right crank at regular intervals blind bore holes, in which are mounted cylindrical dowels for tight fit and close the bolt with the washer all the way down through the inner race of the bearings of the carriage and spacer to the inner end of the left crank, and shaft length should be slightly less than the total length of the cylindrical parts of the right and left cranks, inner cone bearing carriage and spacers.

The invention of illustrer what is drawings, where figure 1 shows the carriage bike with cranks, rods and axes of the pedals is a top view; figure 2 is a view And side view; figure 3 shows a section b-b, showing the movable mounting of the left rod to the left crank; figure 4 shows a cross-section, depicting a rigid axle, the right pedal in the right rod through the free edge of the locking cover to prevent it from loosening; figure 5 shows a section a-a, illustrating features of the left turn of the rod in the range from 0 degrees with the vertical position of the cranks and up to 90 degrees - when horizontal position; figure 6 shows a section a-a, illustrating features of the left turn of the rod in the range of 45 degrees with the vertical position of the cranks and up to 90 degrees - horizontal position; figure 7 shows the normal kinematics of circular motion axis left pedal radius l, due to the length of the legs of the cyclist - curve 31, the kinematics of circular motion of the crank radius L - curve 32 and the kinematics of the movement axis of the left pedal with moving rod of length m with limitation of rotation angle of the rod relative to the crank in the range from 0 to 90 degrees in a full turn of the crank 360 degrees in the counterclockwise direction curve 33; Fig shows the normal kinematics of circular motion left axis p is given radius l, due to the length of the legs of the cyclist - curve 31, the kinematics of circular motion of the crank radius L - curve 32 and the kinematics of the movement axis of the left pedal with moving rod of length m with limitation of rotation angle of the rod relative to the crank in the range of 45 to 90 degrees in a full turn of the crank 360 degrees in a counterclockwise direction curve 33; figure 9 shows the section D-D, showing the section of the carriage of the bike and the mounting yoke to the shaft of the carriage; figure 10 shows the fastening of the left crank to the shaft of the carriage by means of a set of cylindrical dowels; figure 11 shows the attachment of the right crank to the shaft of the carriage by means of a set of cylindrical dowels; Fig shows the location of the main axis of symmetry leading ellipses gear towards the right crank for a racing Bicycle; Fig shows the location of the main axis of symmetry leading ellipses gear towards the right crank for a track bike.

The carriage of a Bicycle includes a left crank 4 with the installed movably left hollow rod 3 with impact-resistant gaskets 14 and 15 on two bearings 12 through the guide sleeve 13 and the spacer ring 34 fixed left locking cover 2 and the left pedal spindle 1. Similarly arranged right crank 6 is installed is and it is movable right hollow rod 7, fixed right locking lid 8 and the right pedal spindle 9, and the leading ellipsa gear 22 with aspect ratio a>b.

In the Bicycle frame 5 through a thrust bearing 20 has two bearing 21, which through the spacer 17 is placed a shaft 16, which is on the left side with a set of cylindrical dowels 19 has left the crank 4, fixed by the bolt 10 through the washer 11, and on the right side, using a set of cylindrical pins 19 mounted right crank 6, is fixed by bolts 18 through the washer 11. Leading ellipsa gear 22 via the drive circuit 25 transmits torque for a road bike through the chain tensioner 26 to 27 cassette rear wheel 28, and for a track bike right on the leading gear wheel 29 of the rear wheels 30. The athlete sitting on the saddle 24, through the hip joint 23 passes muscular effort on the rear road wheel 28 or track 30.

The carriage of bicycles is as follows. A round cross-section and tight fit on the left side of the shaft 16 has a left crank 4, is rigidly fixed with the help of a set of cylindrical pins 19 and the bolt 10 through the washer 11, and the circular cross-section and tight fit on the right side of the shaft 16 has the right crank 6, rigidly fixed by a set of cylindrical pins 19 and the bolt 18 through the washer 11, providing high techno is aginast of manufacture and ease of Assembly, connections, while supporting the flat part of the left 4 and right 6 cranks tightly pressed their mechanical parts through the inner race of the bearings 21 to the spacer sleeve 17, forming a rigid structure that does not have axial and angular movements even after a long term operation of tightening and loosening of bolts 10 and 18. On the right crank 6 is installed leading ellipsa gear 22 so that the location of the axis of the damper pedal 9 in the lower position on the same line with the center shaft of the carriage 16 and hip joint athlete 23 on the saddle 24 its major (long) axis of symmetry is located at an angle of 90 degrees to the upper branch of the drive chain 25, the transmitting torque to road bike through the chain tensioner 26 to 27 cassette rear wheel 28, and for a track bike right on the driven gear 29 of the rear wheels 30.

When the rotation of the pedals by the rider muscular effort, his legs are passed down through the left pedal spindle 1 with simultaneous pulling up through the right pedal spindle 9 in the hollow left 3 and right 7 rods, to the left 4 and right 6 cranks and through a set of cylindrical pins 19 on the shaft of the carriage 16. When the vertical position of the cranks 4 and 6, the left foot of the rider due to the usual stereotype of pedaling, due to the length of the legs when they are bent, cannot bagnaticavia its optimal value and is at a distance l from the shaft of the carriage 16. Considering the kinematics of the movement axis of the left pedal 1 7, you can see that the increase of the distance between the left pedal spindle 1 and the shaft of the carriage 16 during rotation of the left crank arm 4 from the vertical l to its horizontal position L is reached by turning left hollow rod 3 from 0 to 90 degrees in length from 0 (at 0 degrees) to its maximum value m equal to the length of the rod (at 90 degrees). And you can see that this increase in distance is minimal in the initial stage of rotation (from 0 to 45 degrees), reaching values from 0 to 0.3 m, and the maximum end rotation (from 45 to 90 degrees), reaching values from 0.3 m to m. Comparing the kinematics of the movement axis of the left pedal 1 7 and Fig, we conclude that to maintain the usual stereotype pedaling least its distortion the most effective turn left connecting rod 3 relative to the left of the crank 4 is 45 degrees (45 to 90 degrees) with simultaneous sufficient distance between the left pedal spindle 1 to the shaft of the carriage 16 to 0,7m (from 0.3 m to m), which is two times reduces additional angular and linear displacement of the left connecting rod 3 relative to the left of the crank 4.

When the horizontal position of the cranks 4 and 6, when mainly generated torque on the carriage of bicycles, used the most which such application the maximum effort of the legs of the athlete on the cranks 4 and 6 at an angle of 90 degrees. When turning the cranks 4 and 6 from the horizontal to its vertical position, due to changes in the comfortable position of the feet of the athlete when the pressure on the axis pedals 1 and 9 and changing the angle of application of muscular forces to the axes of the pedals 1 and 9, there is a reduction in torque on the carriage of bicycles from its maximum value to "0". In addition, the upper and lower positions of the cranks 4 and 6 there is a change directions attached forces to the axes of the pedals 1 and 9 on the opposite, which leads to the formation of the so-called "dead zones", which are not included muscular strength and not generated torque. The use of increased gear ratio in "dead zones"where there is no pressure on the pedal axles 1 and 9 and is not generated torque will result in automatic reduction ratio in the horizontal position of the cranks 4 and 6 and easier pedaling with preserving the original usual torque on the carriage of bicycles.

Considering the kinematics of the movement axis of the left pedal 1 on Fig, it is seen that when the left turn of the crank 4 from 0 to 45 degrees left rod 3 under the influence of the extensor pressure left foot on the left pedal spindle 1 down remains stationary relative to the left of the crank 4, and when it is further rotated from 45 degrees to 90 the radius of freely rotated from its original position 45 degrees to 90 degrees in the clockwise direction. When turning left crank 4 from 90 degrees to 180 degrees left rod 3 due to turn restrictions, due to extensor force of the left leg down, holding the right side surface of the hollow rod 3 through the shockproof strip 15 to the ledge on the left crank 4, remains stationary relative to the left of the crank 4 up until acts extensor force of the left leg down. But as the left foot due to the usual stereotype of pedaling, due to the length of the legs when the extension may not fall below the optimum values of l and C1keeps the left pedal spindle 1 at a distance l from the shaft of the carriage 16 by turning the hollow rod 3 in the counterclockwise direction with respect to the left crank 4 from 90 degrees to 45 degrees, at which its angular movement is limited to the left side surface of the hollow rod 3 through the shockproof strip 14 and the tab on the left crank 4. When turning left crank 4 from 180 degrees to 225 degrees left rod 3 under the influence of flexion strength left foot on the left pedal spindle 1 up remains stationary relative to the left of the crank 4, and when it is further rotated from 225 degrees to 270 degrees also rotated from its original position 45 degrees to 90 degrees in the direction of the hour is howling arrow. When turning left crank 4 from 270 degrees to 360 degrees left rod 3 due to turn restrictions, due to flexion force of the left leg up, holding the right side surface of the hollow rod 3 through the shockproof strip 15 to the ledge on the left crank 4, remains stationary relative to the left of the crank 4 up until acts flexion force of the left leg up. But as the left foot due to the usual stereotype of pedaling, due to the length of the legs when they are bent, cannot rise above its optimal values of l and C2keeps the left pedal spindle 1 at a distance l from the shaft of the carriage 16 by turning the hollow rod 3 in the counterclockwise direction with respect to the left crank 4 from 90 degrees to 45 degrees, at which its angular movement is limited to the left side surface of the hollow rod 3 through the shockproof strip 14 and the tab on the left crank 4.

1. The carriage of bicycles, including leading the gear and the shaft connecting the two crank mounted with two rods, wherein the two cranks rigidly connected by a shaft with a round cross-section with a set of cylindrical dowels all the way down the inner face planes of the cranks through the inner race of the bearings ka is etki the spacer with a simultaneous emphasis of the outer casing bearing carriage in a thrust bearing, has two connecting rod having a hollow shape, each of which is placed in the same plane with the crank before him in the course of its rotation through the guide sleeve and spacer ring on two bearings and fixed by means of the screw connection locking lid, and zakontrolit from loosening pedal spindle with the possibility of free angular movement of the rod relative to the crank in the range of 45° when the vertical position of the cranks and up to 90° in their horizontal position, limited by the lug on the crank and the inner side surfaces of the connecting rod through the shockproof strip.

2. The carriage of a Bicycle according to claim 1, characterized in that the leading ellipsa gear is oriented relative to the right of the crank and set it so that at the location of the axis of the right pedal in the down position on a straight line with the center shaft of the carriage and the hip joint of the athlete on the bike, its major (long) axis of symmetry is located at a 90° angle to the upper branch of the drive chain.

3. The carriage of a Bicycle according to claim 1, characterized in that the Bicycle frame in end-to-end, the bore in a single setup a seat for the outer cone bearing set thrust bearing using a press fit, and on the shaft of the carriage between the inner cone bearing set thrust vtalk the free landing both sleeves have exactly the same length.

4. The carriage of a Bicycle according to claim 1, characterized in that each of the cranks through hole for external clamps bearings and a through hole for mounting the shaft of the bore with one hit, and each rod is a cylindrical portion to the inner cone bearings and a threaded hole for the axis pedals are also made with one hit.

5. The carriage of a Bicycle according to claim 1, characterized in that the left crank mounted on the shaft with a round cross-section and tight fit to the full alignment of their end surfaces, and circular lines of contact at regular intervals blind bore holes, in which are mounted cylindrical dowels for tight fit and is pressed by a bolt with a washer.

6. The carriage of a Bicycle according to claim 1, characterized in that the right crank mounted on the shaft with a round cross-section and tight fit so that the shaft and seats for the outer cone bearing left and right cranks were in the same plane, and by a circular line of contact of the shaft and right crank at regular intervals blind bore holes, in which are mounted cylindrical dowels for tight fit and close the bolt with the washer all the way down through the inner race of the bearings of the carriage and spacer to the inner face of the left krivosha is a, the length of the shaft should be slightly less than the total length of the cylindrical parts of the right and left cranks, inner cone bearing carriage and spacers.



 

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Threaded joint // 2459125

FIELD: machine building.

SUBSTANCE: proposed joint has tightening threaded element with hole receiving locking element, nut, spring washer and body to be tightened. Nut seat has saw teeth with inclined top wall and vertical cut made along radius on site with larger-diameter equal to or slightly exceeding that of spring washer. Width of inclined top wall of saw teeth equals height of spring washer while tooth vertical cut equals Vt.=gs.=1.618 mm, where gs. is golden section from 1 mm. Spring washer features vertical or skewed cut made over its entire thickness while left and right ends of said washer have angles of sharpening directed in opposite sides relative to each other. Said angles equal incidence angle between tooth top wall and its vertical cut. Their heights are equal but smaller than that of spring washer by golden section from 1 mm. Circular way similar to that of saw teeth ob nut seat is made on body to be tightened. Top and bottom faces of spring washer left and right ends are parallel.

EFFECT: increased friction forces, higher reliability.

2 dwg

FIELD: transport.

SUBSTANCE: invention relates to variable-diameter or offset sprockets. Drive sprocket features larger diameter apex bent opposite direction of motion. Note here that larger-diameter apex is sharpened at intersection of perpendicular moving from smaller-diameter apex. Center of rotation may be shifted along vertical and/or horizontal axes.

EFFECT: higher sprocket drive efficiency.

11 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to bicycles comprising reciprocating foot pedals. Frame 1 comprises guides 2, 3 accommodating carriages 4, 5 with pedals 6, 7 that may be locked, and carriage 22 with seat 23. Rear drive wheels 8, 9 are provided with tapered blocks 14, 18 that have helical flutes with variable radius for cables 20, 21 coupled with carriages 4, 5. Backrest 25 thrusting on roller 26 secured to frame 1 is articulated with seat 24. To shift gears, seat 23 is moved along guides 2, 3. Note here that cables 20, 21, winding or unwinding, move to helical flute sections with required radius and appropriate gear ratio. To allow boat-racing motion to load hand, back and belly muscles, retainer 32 of seat 23 is disengaged from guides 2, 3.

EFFECT: increased gear ratio in streamlined horizontal position and reduced gear ratio for uphill climbing and heavy road.

5 dwg

The invention relates to machine building, transport, in particular to velotron

Drive bike // 2184673
The invention relates to transmissions with wheels that is moved when switching

The invention relates to vehicles with a muscular drive

The invention relates to the field of vehicle engineering, powertrain vehicles, namely variable transmission, which can be used in automobile and tractor industry

The invention relates to mechanical engineering and can be used in particular for bicycles, exercise bikes and other similar devices

Drive biotransporta // 2060195
The invention relates to the field of engineering, namely, to designs of bicycles, velomobiles, etc

Bike maxi-2" // 2057673
The invention relates to transport machinery, mainly for the design of biotransporta, namely bicycles for transportation of goods and passengers, travel, tourism and sport

The invention relates to the field of engineering, namely, to designs of bicycles, velomobiles, etc

FIELD: transport.

SUBSTANCE: invention relates to bicycles with pedal drive crank mechanisms that comprises levers of self-adjusting length that run along elliptic trajectory or other noncircular rotational trajectory. Pedal drive with chain or belt transmission comprises pinion frame 1 with its first end coupled with shaft of carriage 2, lever 3 with pedal 4 rigidly fixed with sun gear 5, stationary gear 6 with gear ratio of 2:1 with respect to sun gear 5. Stationary gear 6 is fixed relative to bicycle and coupled with sun gear 5 by chain or belt transmission. Second end of pinion frame 2 is articulated with sun gear 5 at the point shifted from its center while stationary wheel 6 features shape other than circle.

EFFECT: reduced drive forces due to mismatch between passing top dead center and bottom dead center of pedals.

4 cl, 4 dwg

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