Front car for bicycle

FIELD: transport engineering.

SUBSTANCE: invention is designed for converting standard bicycle into tricycle by fastening car instead of front fork. Connecting device 3 of car 1 has upper and lower parts with axle tilter relative to bicycle frame 8 to provide tilting of bicycle frame 8 to side of cornering. Connecting device 3 consists of upper and lower brackets on car 1. Plate fastened to frame 8 through hole for passing front fork of bicycle is hinge-connected with upper bracket of connecting device 3. Tube consisting of two parts connected by two cover plates enclosing tilted tube of bicycle frame 8 is hinge-connected with lower bracket. Tube is secured in its rear part by two cover plates in unit of under-saddle intersection of tubes of bicycle frame 8. Wheels of car are mounted on cantilever axle. Synchronous operation of caliper brakes of car wheels is provided by tensioning of cable, common for two brakes, and passing along steering tube of car skeleton. When brakes are used as parking brakes, cable is tensioned and put on hooks on said tube. Sides of car are made of gauze. Hinged front board can be fixed in horizontal position. Car is provided with seat for passengers, which can be used as tent for covering loads, or as sail.

EFFECT: increased load carrying capacity of car, possibility of use with any bicycle without its modification.

4 cl, 17 dwg

 

The invention relates to vehicles, particularly trucks and trailers for two-wheeled vehicles: bicycles, mopeds, scooters, etc.

There is a construction truck-trailer bike (A.S. USSR 152346 3 A1 CL 62 To 27/12, 1988), comprising a housing, wheels, a handle and a connecting device. Truck-trailer is used as a cargo swing front-to-manage platform. On the underside of the cargo platform fixed vertical axis, enabling the platform to rotate around the connecting device.

The disadvantage of this design is that such a bike with a cart in the front when turning loses its stability due to the fact that the connecting device causes the bike to lean in the direction opposite to the rotation.

The closest technical solution (prototype) to declare is the truck for bike (patent GB 190926310, CL 62 To 7/00, 15.09.1910,), comprising a housing, wheels, connecting the device to the frame of the bike made the back of the truck and having upper and lower portions with the axis having a tilt relative to the frame, so when you rotate the bike is provided by the tilting of the frame in the direction of rotation.

The disadvantage of this design is that the distance between the upper and lower brackets cha the tee connection slightly, therefore, the stiffness and strength of the connection of the frame with trolley in this design is small, and therefore such a bike with a cart can be used for transportation of small cargoes in lung conditions.

A significant drawback of this design is that the frame of the bike must have a special design because of its short front tube, selenaaa with brackets connection has a reverse slope compared with the conventional frame of a Bicycle.

The basis of the invention is tasked to create a cart that could be used with almost any bike without alteration, with minimum overall dimensions of the truck with the bike to get the maximum useful volume of trucks, capable of cargo to transform into a truck for transportation of passengers and is capable of being used as a trailer to the bike and as hand truck.

The solution of this problem is achieved by the fact that the upper bracket of the connecting device connects the plate attached to the Bicycle frame through the hole for a hike on the front forks of the bike, and with the bottom bracket pivotally connected to pipe consisting of two bonded plates parts going to the seatpost crossing pipes to the Bicycle frame, resulting in sufficient jetcost and the strength of the connection. This design of the connecting device allows for the drive to rotate the trolley relative to the Bicycle frame at an angle of up to ±75°and thus to have a very small radii of curvature less than 0.5 m for the inner wheels of the truck. When storing the bike frame can be rotated relative to the truck at an angle of 90° and mounted along the tailgate, which reduces the overall dimensions.

The truck has a rigid tubular frame, one of the pipes which plays the role of the steering wheel, the bottom is made of steel sheet, the sides of the grid, and the front Board has the opportunity to lean back and be fixed in a horizontal position, which allows the carriage of goods to increase the loading area and when transporting passengers hinged front Board is used as a footrest.

Tick brakes on wheels of the trolleys operate synchronously with its common for the two brake cable, they are also used as the Parking brake, for which the cable is stretched and worn on the hooks on the steering tube. The availability of Parking brake satisfies the “Temporary technical requirements velomobiles, approved by the Ministry of the automotive industry of the USSR in 1988

Collapsible seat fabric or leather, which included trucks, allows the use of a cart for transporting two passengers, so they can desactivate the cargo or to use the wind as a sail.

The truck is equipped with a special handle for retrofitting truck in the back of the trailer to the Bicycle or hand cart.

Comparative analysis of the prototype shows that the proposed technical solution has novelty, since the connection unit truck with the frame of the bike is made in the form of two spaced apart along the height of the mounts, which increases the rigidity and strength of the connection; the truck has a rigid tubular frame with mesh sides and bottom, tick brakes are used as the motion of the bike, as well as Parking, and the presence of collapsible seats and a folding Board, fixed in a horizontal position, allowing to transform the bike from the cargo in the passenger.

The claimed invention is illustrated by drawings, where figure 1 shows the truck with the bike, General view; figure 2 - the truck with the bike, top view; figure 3 is a node I in figure 1; figure 4 - node II in figure 1; figure 5 site III in figure 1; figure 6 is a section a - a in figure 3; figure 7 - site IV in figure 1, Fig - section b-B of figure 7; figure 9 - frame truck in a perspective view; figure 10 is the side of the truck from the grid in perspective view; figure 11 - bottom truck is a perspective view; Fig - front side of the truck in a lowered position in a perspective view; Fig - section b-b In figure 1; Fig - view cart front; on Fig - view cart side; on Fig - ve is ociped with truck-trailer rear General view; Fig - handle for truck-trailer in a perspective view.

Truck 1 for a Bicycle consists of a body 2, the connecting device 3, wheels 4, tick brakes 5, welded seat 6, screw on the pipe 7.

The connecting device of the trolley 1 and the frame 8 bike has a bracket 9 upper mount and bracket 10 bottom mount rigidly attached to the housing 2. The frame 8 is fixed through the hole of the front fork bolt 11 and the plate 12. The bracket 9 and the plate 12 are connected by a bolt 13 through a damping washer 14. The bracket 10 bottom mount coupling devices bolt 13 is connected via a damping washer 14 with the pipe 15. The pipe 15 and its extension pipe 16 is connected plates 17 which surround the pipe 18 of the frame 8. Pads 17 and the pipes 15 and 16 are drawn together by bolts 19. The pipe 16 in the upper part is rigidly attached to the two pads 20 that are included seatpost fork tubes 21 and 22 of the frame 8.

If the bike frame has a simplified construction and a horizontal pipe 22 is absent, the pipe 16 is attached to the pipe 21 by means of a clamp 23 and bolt 24.

The tubular frame 25 truck has a U-shaped high pipe 26 that performs the role of the steering, the pipe 27 in the form of a rectangular frame, tilted forward is rigidly attached to two brackets 28 for fastening tick brakes 5, the U-shaped lower pipe 29, the two bent the x of the pipe elbows 30 and two longitudinal pipes 31. To the knees 30 is rigidly attached two rings 32 and two plates with holes 33. On the lower front tube 34 of the frame 27 has four brackets 35 for fastening the hinged front Board 36. Front folding Board 36 is made of mesh 37, rigidly attached to the pipe 38, and has on each side two folding lever 39, pivotally connected to the plates 33. Board the trolley back 40 and two side 41 is made of mesh. The bottom 42 of the trolley is made of steel sheet with limb 43 rear and sides. The 4 wheel trolley mounted on cantilever axis 44, is fixed by a nut 45 in the pipe 46, sandwiched between the two gusset plates 47 and 48 are rigidly attached to the tubes 27 and 29 of the frame 25. Tick brakes 5 synchronously driven common to the two brake cable 49, which when using the brakes as Parking worn on the hooks 50 on the horizontal tube of the steering wheel 26. Collapsible seat 6 for the carriage of passengers set his pipe 7 in ring 32 on lap 30, and the upper part hooks 51 is attached to the mesh back Board 40.

The truck is equipped with a handle 52, which when using the truck as a trailer is attached through holes 53 by bolts 54 to the pipe 26 of the frame of the truck. The handle 52 to its trailer device 55 is attached to the seat tube of a Bicycle. The handle 52 as is required when using the truck as hand.

odlievania truck to the bike runs as follows. Fork of the front wheel with the wheel and the wheel is detached. To the frame 8 of the bike fixed plate 12 and the pipes 15 and 16. The upper bracket 9 and the bracket 10 of the bottom fastening of the connecting device on the body of the truck are connected by bolts 11 are respectively mounted on the frame plate 12 and the pipe 15.

When moving the bike with a cart-wheel is U-shaped pipe 26 of the frame. The connecting device allows you to have the angle of rotation of the frame relative to the truck to ±75°while the turning radius of the inner wheel can be less than 0.5 m

Tick brakes 5 on wheels carts are common to the two brake cable 49, passing under the steering pipe 26 at a comfortable viewing distance for tensioning fingers. The Parking position of the brakes is effected by attaching the cable 49 to the hooks 50 on the steering tube 26.

Seat 6 with the pipe 7 may be used for closing the cargo, as a seat for passengers and as a sail with a fair wind.

The offered trolley is connected to it by the handle 52 can be used as a trailer to a regular Bicycle or hand cart.

1. Trolley for a Bicycle, comprising a housing, a connecting device of the truck with the bike frame, wheels, tick brakes;

the connecting device is made in the back of the truck and has upper and lower frequent the axis, with a tilt relative to the frame of the bike to ensure that when turning the bike tilt the Bicycle frame in the direction of rotation,

the connecting device consists of upper and lower brackets on the truck, wherein the upper bracket of the connecting device pivotally connected to plate attached to the Bicycle frame through the access opening of the front fork of a Bicycle;

with the bottom bracket pivotally connected to pipe consisting of two parts connected by two plates covering the inclined tube of the frame of the Bicycle;

and in the rear part of the tube is secured with two straps in seatpost crossing pipes to the Bicycle frame.

2. The trolley according to claim 1, characterized in that the trolley has a tubular frame, one of the pipes which plays the role of the steering wheel, the bottom side of the grid, and the hinged front Board has the opportunity to lock in a horizontal position.

3. The trolley according to claim 1, characterized in that the synchronous drive of tick brakes of the wheels of the trolley is provided with tension common to the two brake cable passing along the tubes of the frame of the truck, the role of the steering wheel, and when using the brakes as the Parking cable is stretched and worn on the hooks above the pipe.

4. The trolley according to claim 1, characterized in that it has a collapsible shiden the E. of fabric or leather, attached on one side to the pipe on which is wound a cloth or leather, with possible use for the carriage of passengers, as an awning to cover the cargo, or as a sail.



 

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