CN2194864Y - Portable multipurpose two-speed bicycle - Google Patents

Abstract

The utility model relates to a portable multipurpose two-speed pocket bicycle. The existing portable bicycles have low riding speed and difficult practicality after using small wheels. The utility model has small wheels and two-stage acceleration and has a set of big wheels and a set of small wheels to make the riding speeds all higher than the riding speed of a big wheel bicycle. The two-speed pocket bicycle can become into a children bicycle only by using one stage acceleration so that the two-speed pocket bicycle can be used for a whole life. A middle connection pipe is vertically and fixedly connected with a back vertical pipe, and the middle connection pipe can be rotated from a 70 DEG connected regular H-shaped bicycle frame into a 90 DEG connected regular H-shaped bicycle frame, and a baggage trailer, or a pushchair or a temporary chair can be formed by only rotating the planes of the front wheel and the rear wheel to 90 DEG with the regular H-shaped bicycle frame. The two-speed pocket bicycle has telescopic bicycle frame and foldable pedals and is small and light so that the two-speed pocket bicycle is convenient for carrying, and the cost is low and the production is fast because of small land occupation and less material consumption.

Description

Portable multipurpose two-speed bicycle

The utility model relates to the pocket bicycle of a kind of portable versatile two-speed.

At present, many portable bicycles have been invented both at home and abroad, their characteristics are to have adopted trundle for ease of carrying more, this but makes the speed of riding of portable bicycle cross low and can not practicality do walking-replacing tool, can not doublely do perambulator and his usefulness, the function singleness purposes is few, and therefore, a kind of portable multi-purpose can be on sale throughout in the city as yet for practical small-wheel bicycle.

The purpose of this utility model is to provide a kind of shape and variable size, can be the adult ride at a high speed practicality, can learn car for children's low speed again and play, also variablely do that luggage trailer, shopping cart, child stroller and interim seat etc. have the volume of multiple function little, the pocket bicycle of steamboat in light weight, portable.The purpose of this utility model is achieved in that transversal surface is that preceding standpipe and the transversal surface of garden shape pipe is that the rear profile tube of square tube can connect into two kinds of H shape vehicle frames for connection pipe among the long up and down rectangular tube with transversal surface: standpipe hypsokinesis and become the oblique H shape vehicle frames at 70 degree angles with middle pipe before just constituting during locker on the standpipe before central pipe front end inserts, for forming the pocket bicycle use of two-speed; In the middle of connection pipe front end just constitute during locker under the standpipe before inserting before standpipe vertical and become the positive H shape vehicle frame of an angle of 90 degrees with middle pipe, for forming the luggage trailer, shopping cart, child stroller and interim seat are used, the middle pipe rear end of two kinds of H shape vehicle frames becomes an angle of 90 degrees Joint with the rear profile tube leading flank, middle connection pipe is to be connected into by connection pipe locker in the two sections employings in isometric front and back, the structure of middle connection pipe locker is identical with locker on the preceding standpipe, locker is that one section transversal surface is long up and down rectangular tube on the preceding standpipe, it becomes 70 degree angle Joints with preceding standpipe, the side up and down of rectangular tube all has one section vertical fluting to make the left and right side flexible, be covered with brace panel on the left surface, individual in-line fluting is arranged on the plate, through hole on through hole being arranged in the fluting and middle pipe leading portion being held before communicates, T shape screw rod passed the through hole in the in-line groove and makes the in-line nut of T shape screw rod imbed in-line groove on the brace panel stoping the rotation of T shape screw rod, the other end that T shape screw rod passes screw on jam nut just make before standpipe and middle pipe can not relative motion.Before under the standpipe structure of locker identical with locker on the preceding standpipe, it becomes 90 to spend Joints with preceding standpipe, transversal surface is to be locked in the locker on the saddle sitting pipe insertion rear profile tube of square tube.The structure of locker is that trailing flank at rear profile tube has one section groove on the rear profile tube, there is chimb on groove two limits, passing on the chimb through hole with lock bolt twists to constitute behind the nut, the structure of lock device is identical with locker on the preceding standpipe under the rear profile tube, just its transversal surface is a square tube, and cross-section is that foursquare back vent jaw can insert locker under the rear profile tube with following two orientation.

The formation of the pocket bicycle of two-speed is that the back vent jaw is inserted after the cycle frame be oblique H shape locker under the standpipe, and make the trailing wheel plane in oblique H shape cycle frame plane, be connected with bottom bracket in middle pipe locker back, axis and preceding chain wheel, crank and pedal device are equipped with in its lower end, being with initiatively on the preceding chain wheel, chain also is enclosed within on the little chain wheel of accelerating the axle sleeve right-hand member backward, the left end of accelerating axle sleeve has back chain wheel, be with driven chain on it and also be enclosed within downwards on the left flywheel of trailing wheel, accelerate axle sleeve and be enclosed within the upward rotation of quickening axle.Because the little chain wheel of ratio of number of teeth of preceding chain wheel is many, little chain wheel rotates with speed with the back chain wheel, the number of teeth of back chain wheel is more than the left flywheel number of teeth, so whenever crank and preceding chain wheel are stepped on when circling, left side flywheel and trailing wheel just rotate several weeks, make the pocket bicycle of two-speed can be,, more can improve and ride speed if when changing the standby big trailing wheel of left flywheel with the riding at a high speed of general big wheel bicycle; If active chain the past chain wheel directly is enclosed within on the right flywheel of trailing wheel backward, then the revolution of trailing wheel just is declined to become the child's bicycle revolution, lower again handlebar, saddle sit and shorten in behind the connection pipe, the pocket bicycle of two-speed just becomes the child's bicycle that can supply the infantile study car, play.

The luggage trailer, shopping cart, the formation of child stroller and interim seat is that the back vent jaw is inserted after the vehicle frames such as luggage trailer be positive H shape locker under the standpipe, and make the trailing wheel plane perpendicular to positive H shape vehicle frame plane, again handlebar is clockwise rotated 90 degree, the plane that makes front-wheel is also perpendicular to H conformality vehicle frame plane, loosen and push handlebar tube to saddle behind the handlebar locker and sit locker and locking, the structure that saddle is sat locker is identical with locker on the rear profile tube, just its transversal surface is garden shape pipe, it is identical that handlebar locker and saddle are sat the locker structure, just can shelve article or work as cushion behind the nylon strap that tacks down between front fork pillar and back vent are leant on for a short time.In order to make luggage trailer, shopping cart, child stroller and interim seat have front and back wheel the 3rd fulcrum in addition to park for stand temporarily, left crank is turned to and lock mutually with bottom bracket with the U-shaped lock, then right crank just contacts to earth right pedal downwards becomes the 3rd fulcrum.Portable method of the present utility model has two kinds, a kind of is to reduce handlebar under the pocket bicycle state of two-speed, saddle is sat, connection pipe in the shortening, loosen handlebar and sit locker handlebar rotation 90 degree, loosen again the handlebar locker with handlebar tube push to the back insert saddle sit in the locker fastening after, with promoting the pocket bicycle of two-speed and advance once holding handlebar tube, also can mention and get on or off the bus, ship, subway and high building etc., another kind method is that locker place on the standpipe of pocket bicycle the past of the two-speed after above-mentioned the dwindling is split up into two big parts, pull down handlebar tube and pedal, put into the suitcase internal fixation on the hard floor of suitcase, the suitcase handgrip also is fixed on the base plate, and the zip drawing be made and be used to suitcase case nation and case lid can with light and soft nylon cloth.The locker structure of aforementioned each non-pipe also can adopt the form of locker on the rear profile tube.

Below in conjunction with the accompanying drawing of an embodiment in detail, structure of the present utility model is described in detail:

The pocket bicycle front elevation of Fig. 1 portable multi-purpose two-speed

The pocket bicycle back view of Fig. 2 portable multi-purpose two-speed

Fig. 3 accelerator device constructional drawing

Locker constructional drawing about the standpipe before Fig. 4

Locker constructional drawing under Fig. 5 rear profile tube

Fig. 6 pedal and crank connecting link constructional drawing

Locker constructional drawing on Fig. 7 rear profile tube

Fig. 8 saddle is sat the locker constructional drawing

Fig. 9 luggage trailer, shopping cart, child stroller and interim seat front elevation

Figure 10 V-gear drive mechanism figure

The pocket bicycle vanning of Figure 11 portable multi-purpose two-speed figure

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Before standpipe (4), rear profile tube (20) can form two kinds of H shape vehicle frames with the middle pipe leading portion (2) that is connected them and middle pipe back segment (21): before the front end of middle pipe leading portion (2) inserts on the standpipe during locker (5), just preceding standpipe (4) hypsokinesis of formation and become the 70 oblique H shape cycle frames of spending angles with middle pipe; In the front end of connection pipe leading portion (2) just constitute during locker (6) under the standpipe before inserting before standpipe vertical and become positive H shape luggage trailer, shopping cart, child stroller and the interim seat vehicle frame of an angle of 90 degrees with middle pipe.In the connection pipe be by two sections isometric cross-sectionly are socketed to form for long up and down rectangular tube, in the rear end of connection pipe leading portion (2) insert in connection pipe back segment (21) and with in connection pipe locker (18) locking, middle connection is managed purchasing of locker (18) and is made identical with locker (5) on the preceding standpipe, locker (5) is that transversal surface is long up and down rectangle short tube on the preceding standpipe, become 70 degree angle Joints with preceding standpipe (4), it has vertical fluting (67) can make the left and right side flexible in the side up and down, left surface is covered with brace panel (51), brace panel has the in-line groove on (51), there is garden shape through hole to communicate in the groove with the through hole of middle pipe leading portion (2), after passing in-line groove and through hole with T shape tie down screw, the in-line nut (47) of T shape tie down screw is imbedded in the in-line groove of brace panel (51) T shape tie down screw can not be rotated in through hole, just make preceding standpipe (4) and the middle pipe leading portion (2) can not relative motion at the traversing through end of the T shape tie down screw jam nut (48) of screwing on, the effect of locker (6) is identical with locker (5) on structure and the preceding standpipe under the preceding standpipe, just it becomes an angle of 90 degrees Joint with preceding standpipe (4), the side of middle connection pipe leading portion (2) has some knock holees (3), it communicates with the through hole that middle pipe locker (18) is gone up in the in-line groove, length in order to connection pipe back segment (21) in connection pipe leading portion (2) insertion in regulating, middle connection pipe back segment (21) is the vertical Joint of rear profile tube (20) leading flank of square tube with transversal surface, there is locker under the rear profile tube (23) lower end of rear profile tube (20), its structure is identical with locker (5) on the preceding standpipe, just transversal surface is a square tube, there is locker on the rear profile tube (19) rear profile tube (20) upper end, transversal surface is that foursquare pipe saddle sitting pipe (17) inserts wherein and is locked, the structure of locker on the rear profile tube (19) is that the trailing flank at rear profile tube (20) has one section vertically fluting, slot through hole is arranged on the chimb (59) on two limits and passes with lock bolt (57) after, just make saddle sitting pipe (17) and the rear profile tube (20) can not relative motion at the traversing through end jam nut (56) of screwing on, locker on the rear profile tube (19) can be used to regulate the height that saddle is sat (15).

The formation of the pocket bicycle of two-speed is to be transversal surface that the jaw of the back vent (30) of square tube inserts under the rear profile tube of the cycle frame be oblique H shape in the locker (23), and the plane that makes trailing wheel (31) is in oblique H shape cycle frame plane.Middle pipe locker (18) affixed afterwards bottom bracket (22), axis (10) is equipped with in the lower end, the right-hand member of axis (10) has preceding chain wheel (11), crank (52) and pedal (76) etc., before be with chain (27) initiatively on the chain wheel (11) and be enclosed within backward accelerate axle sleeve (63) right-hand member on the affixed little chain wheel (45), the left end of accelerating axle sleeve (63) is connected with back chain wheel (26), accelerating axle sleeve (63) is to be assemblied in quickening axle (61) by ball (64) in its two termination and quickening axle bumper (60) upward to rotate, accelerating axle (61) is to be clamped on the quickening yoke (25) of back vent thigh (66) with nut (65), there is the chain screw rod (62) of accent the termination of accelerating yoke (25), being with driven chain (28) on the back chain wheel (26) is enclosed within downwards on the left flywheel (43) in trailing wheel (31) left side, because the number of teeth of preceding chain wheel (11) is more than little chain wheel (45), little chain wheel rotates with speed with the back chain wheel, the number of teeth of back chain wheel (26) is more than left flywheel (43), therefore, make preceding chain wheel (11) rotation during one week when stepping crank (52), a left side flywheel (43) and trailing wheel (31) just rotate several weeks, and this makes the pocket bicycle can riding at a high speed with general big wheel bicycle.If also can more improve when changing the standby big trailing wheel of left flywheel and ride speed; If active chain (27) the past chain wheel (11) directly is enclosed within on the right flywheel (46) on trailing wheel (31) right side backward, then the revolution of trailing wheel (31) just drops to the revolution of child's bicycle, the saddle of loweing again sit (15), handlebar and shorten in just become child's bicycle that the child plays behind the connection pipe.Initiatively chain (27) draws distortion to back vent thigh (66) when preventing to step crank, between back vent (30) and bottom bracket (22), there are two back vent push rods (9) to support, back vent push rod (9) one ends withstand on two back vent thighs (66), the other end tangles in bottom bracket (22) lower end so that time spent pull-up and bottom bracket (22) do not fix, in the middle of the fork shoulder of back vent (30), be connected with pillar (40) downwards, its lower end is connected with back brake (41) and rear mudguard (42) and lock, for the different azimuth that adapts to back vent (30) adopts back brake backguy (39) and back brake the soft brake structure of (44).The also available V-gear of driven chain (28) (78) of the pocket bicycle of two-speed replaces, its upper limb is meshed with back chain wheel (26), lower edge is meshed with left flywheel (43) and is sleeved on V-gear axle (79) and goes up rotation, and V-gear axle (79) is to pitch on the thigh on the left side of back vent (30) with nut screwing clamping.Strand go up at the left side of back vent (30) fork and can also fix a totally-enclosed chain of lightweight and close and cover afterwards chain wheel (26), driven chain (28) or V-gear (78) and left flywheel (43).For improving the handlebar road-holding property and making the center of gravity reach, be welded in after front-wheel yoke (12) and trailing wheel yoke (29) are all made with steel plate front fork (8) and back vent (30) about pitch on the thigh (66).Handlebar adjusting screw(rod) (34) is in order to regulate handlebar height and fastening handlebar.

The formation of luggage trailer, shopping cart, child stroller and interim seat is that the insertion of back vent (30) jaw is under the vehicle frame rear profile tube of positive H shape in the locker (23), and make the plane of trailing wheel (31) perpendicular with the plane of positive H shape vehicle frame, handlebar being clockwise rotated 90 degree makes the plane of front-wheel (14) also promptly parallel with trailing wheel (31) perpendicular to positive H shape vehicle frame plane again, after loosening left and right sides handlebar locker (36), handlebar tube (35) is pushed to back insertion saddle sit locker (16) and lock the handrail that push-and-pulls such as just constituting trailer is used.The structure that saddle is sat locker (16) is identical with locker (19) on the rear profile tube, and just the handlebar tube (35) of its internal layer and outer field garden pipe (58) all is that garden shape is managed, and it is identical that the structure of handlebar locker (36) and saddle are sat locker (16).Can stand temporarily or park for making luggage trailer, shopping cart, child stroller and interim seat, the 3rd fulcrum except two wheels in front and back is left crank (68) to be turned to and bottom bracket (22) U-shaped lock (70) locking, and then right crank (32) turns to down right pedal (33) to contact to earth and obtains.To let pass Lee or work as cushion of the nylon strap (69) that between front fork pillar (7) and back vent pillar (24), tacks down.The structure of (19) also can be adopted in each locker (5), (6), (18), (23).

The method of being convenient for carrying of the pocket bicycle of high-mobility, multipurpose, wheeled vehicle two-speed provided by the utility model has two kinds, a kind of is to be reduced to bicycle handle bar's standpipe (1) and saddle sitting pipe (17) minimum, in connection pipe leading portion (2) all in the retractions in the connection pipe back segment (21), unscrewing handlebar again sits locker (38) and makes handlebar sit (37) to rotate 90 degree, loosen handlebar locker (36) back and handlebar tube (35) is pushed to the back insert saddle to sit locker (16) back fastening, then if with a hand just can hold handlebar tube (35) go-cart advance or mention about car and boat, subway and high building.The structure that handlebar is sat locker (38) is identical with locker (19) on the rear profile tube, but will to make transversal surface be square tube in the upper end of the tubular stem in garden (1).For reducing horizontal volume, pedal (76) can be pulled down, it be with square tenon (53) pass crank (52) square opening and be screwed in circular spiro rod section (54) and be fixed tightly in the termination with nut (55).Also locker (5) punishment on the pocket bicycle the past standpipe that has dwindled can be untied and be front and back two big parts, extract out again in the suitcase of packing into after the handlebar tube (35), on the base plate of suitcase, suitcase handgrip (80) also is fixed on the hard floor (72), case nation (74) and the available light and soft nylon cloth of case lid (77) are made and with zip (75) drawing, suitcase can be folded in half into the tablet shape and carry when not using, also can be used as baggage container.

The front and back wheel of present embodiment can be selected the diameter 310---400mm wheel of respectively keeping off a car for use, and other many parts in addition also can be selected the existing standard part for use, and vehicle frame can adopt manufacturings such as high-quality light alloy material, highstrenghtpiston or carbon fibre material.

Although the utility model has the advantage of the trundle that has adopted perambulator, after accelerating through secondary to ride speed the same with general big wheel bicycle, when changing the 400mm big trailing wheel for subsequent use that left flywheel is housed, ride speed and can surpass general big wheel bicycle. And vehicle body is light, inertia is little, the low riding safety that makes of center of gravity, but Shen compression deformation vehicle frame and pedal etc. have been adopted again, make its volume little, in light weight, easy to carry, ride in the time of both can be on and off duty and with transfer subway, car and boat and upstairs place, with anti-lost, can go out by train again, during steamer, with towing Lee, behind interim seat and lower car and boat, riding, especially more convenient when not having public transport. Now general big wheel bicycle is because volume is big, weight is big, it is difficult to move, go upstairs, place and take up an area greatly, easily lose etc., so that when conveniently riding instead of walk, often become again people's burden, Portable multipurpose two-speed bicycle provided by the utility model has then fundamentally been removed above-mentioned burden, really becomes people's carry-on walking-replacing tool. The utility model also becomes child's bicycle when using one-level to pass speed, therefore, to the adult and can ride all the life usefulness old age, it also becomes shopping cart, child stroller and interim seat etc. from the child, advances for people and uses when the park is gone in market or stroll. The utility model is because volume is little, materials are few, adopt standard component and member many, so production cost is low and the cycle short, and price can be accepted by consumers in general.

Claims (4)

1, the pocket bicycle of a kind of portable multi-purpose two-speed, by preceding standpipe (4), rear profile tube (20), middle connection pipe, front fork (8), front wheel spindle (13), front-wheel (14), back vent (30), hind axle (49), trailing wheel (31), handlebar, handlebar adjusting screw(rod) (34), axis (10) and crank (52), pedal compositions such as (76), it is characterized in that: during insert the rear end of middle pipe leading portion (2) connection pipe back segment (21) scalable and with in connection to manage locker (18) fastening, the jaw neck of back vent (30) is that transversal surface is foursquare pipe, the leading flank of rear profile tube (20) is held vertical welding mutually afterwards with middle pipe back segment (21), locker (23) structure is identical with locker (19) on the rear profile tube under the rear profile tube of rear profile tube (20) lower end, but it is cross-section to be square tube, the structure of locker on the rear profile tube (19) is to open one section vertically fluting at the trailing flank of rear profile tube (20), there is chimb (59) on the fluting both sides, through hole are arranged in order to pass the jam nut (56) of screwing on behind the lock bolt (57) on the chimb (59);

In the front end of connection pipe leading portion (2) before locker (5) constitutes on the standpipe before inserting standpipe (4) become the 70 oblique H shape cycle frames of spending angles with middle pipe, the plane that the jaw of back vent (30) inserts locker (23) under the rear profile tube that is oblique H shape cycle frame and makes trailing wheel (31) is in the cycle frame plane of oblique H shape, in connection pipe locker (18) affixed afterwards bottom bracket (22), axis (10) is equipped with in its lower end, preceding chain wheel (11), crank (52), pedal (76) etc., being with initiatively on the preceding chain wheel (11), chain (27) is enclosed within on the little chain wheel (45) backward, little chain wheel (45) is fixed in the right-hand member that adds fast steamer cover (63), the left end of accelerating axle sleeve (63) is connected with back chain wheel (26), accelerate axle sleeve (63) by the ball (64) its two termination in accelerate axle bumper (60) and be assemblied in and accelerate to make on the axle (61) the fast together rotation of little chain wheel (45) and back chain wheel (26), there is driven chain (28) to be enclosed within on the left flywheel (43) on the back chain wheel (26) downwards, the number of teeth of preceding chain wheel (11) is more than little chain wheel (45), and the number of teeth of back chain wheel (26) is more than left flywheel (43).When active chain (27) the past chain wheel (11) can directly be enclosed within on the right flywheel (46) on trailing wheel (31) right side backward, behind the connection pipe, become the child's bicycle that low speed is ridden in reduction saddle seat (45), handlebar and the shortening.

2, the pocket bicycle of portable multi-purpose two-speed according to claim 1, it is characterized in that the available last V-gear (78) that rotates of V-arrangement tooth axle (79) that is contained in of driven chain (28) replaces, V-gear (78) upper limb is meshed with back chain wheel (26), lower edge is meshed with left flywheel (43), and V-gear axle (79) is stuck at the left side of back vent (30) thigh with nut screwing clamping.

3, the pocket bicycle of portable multi-purpose two-speed according to claim 1, it is characterized in that two back vent push rods (9) that can pull to bottom bracket (22) are arranged between back vent (30) and the bottom bracket (22), preventing to step in the row initiatively, chain (27) draws distortion to back vent thigh (66).

4, the pocket bicycle of portable multi-purpose two-speed according to claim 1, the totally-enclosed chain of chain wheel (26), driven chain (28) and the available light material of left flywheel (43) closes and forms a sealing integral body on the cover after it is characterized in that, totally-enclosed chain closes on the left side fork thigh that can be fixed on back vent (30); Preceding chain wheel (11) and available simple and easy half chain guard that is fixed on the bottom bracket (22) of active chain (27) cover from above.

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