CN2481610Y

CN2481610Y - Portable foldable bicycle

Info

Publication number: CN2481610Y
Application number: CN 01246212
Authority: CN
Inventors: 方根明
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-28
Filing date: 2001-06-28
Publication date: 2002-03-13
Anticipated expiration: 2011-06-28

Abstract

The utility model relates to a portable foldable bicycle, which aims to solve the problems of big weight, large volume and the shape to be fixed after being unfolded of a foldable bicycle in the prior art. The frame of the utility model is riveted by steel boards. A four-pole structure of a frame, a pulling pole, a supporting pole and a saddle pole of bicycle fork realizes that the bicycle can be folded vertically and locked automatically in the unfolded state. Rear wheels provided with a flywheel and a chain wheel are arranged on the frame and the bicycle saddle is articulated with the frame. A bicycle fork is arranged in the saddle pole of bicycle and fore wheels and handlebars are arranged on the bicycle fork. The utility model has the advantages of reasonable arrangement, a simple structure, convenient folding and unfolding, small weight, small volume and easy portability, hence an ideal vehicle before and after taking public vehicles.

Description

The portable folding bicycle

The utility model is a kind of portable folding bicycle, belongs to a kind of vehicle.

The vehicle frame of folding bicycle of the prior art is made of steel pipe welding, other parts is contained on the vehicle frame of this structure to have any problem, and adopts longitudinal folding form, and steel pipe and steel pipe can interfere, and adopting needs anchor fitting when laterally folded.So this folding bicycle complex structure, the cost height, Heavy Weight uses inconvenience, and volume after folding is bigger, is unfavorable for carrying.

The utility model is in order to solve above-mentioned weak point, adopt steel plate riveted structure vehicle frame, make longitudinal foldingly, do not interfere between member, parts can be adorned or preserve to the vehicle frame inner chamber, utilize the automatic locking deployed condition of gravity, it is simple in structure, and cost is low, in light weight, it is extremely convenient to fold, launch, and volume after folding is little, is easy to carry.

The utility model implementation method is as follows: based on the vehicle frame of steel plate riveted structure, the steel plate that this vehicle frame adopts dashing of two symmetries to rivet aperture and wash out non-important stressed place material, form with the little axle riveted joint of ladder, after the riveted joint, leave certain distance between two steel plates, so that install or preserve other parts of the present utility model.The trailing wheel of band flywheel is equipped with at the vehicle frame rear portion, and car saddle of vehicle frame upper articulation can be with respect to vehicle frame folding or expansion.The sprocket wheel of a band pedal is equipped with in the vehicle frame middle and lower part, and chain couples together flywheel and sprocket wheel.Pull bar one end is connected with the front upper part ball pivot of vehicle frame, the other end of pull bar and car forked standard bar upper end ball pivot couple together, with selling the preceding bottom that an end of strut is hinged on vehicle frame directly to households, this direct selling is not vertical with vehicle frame, form specific angle, strut at this end also by bending, hinged with another direct selling the lower end of the strut other end and car forked standard bar, this design makes vehicle frame, car forked standard bar, pull bar and strut constitute the three dimensional space four-bar mechanism, so that after folding, front and back wheel is not interfered, and after the expansion, front and back wheel is on same straight line.The car fork is contained in the car forked standard bar, in the car fork front-wheel is housed, and car is stuck end handlebar is housed, and front and back wheel can be equipped with brake equipment.The limit deflection device of being made up of U-shaped frame and fixture block limits the deflection that car is pitched, and makes the utility model not only can portablely carry but also can push-and-pull carry.At vehicle frame inner chamber three places three vee-blocks are housed, after the utility model is launched, the strut bar of car saddle, pull bar and strut embed respectively in the groove of three vee-blocks, under the effect of gravity, the groove of three vee-blocks is strut bar, pull bar and the strut of locking car saddle respectively, keeps deployed condition of the present utility model.

The utility model and folding bicycle of the prior art relatively have following advantage.

Adopt the steel plate riveting to press vehicle frame, in light weight, volume after folding is littler, and is easy to carry.

Adopt longitudinal foldingly, do not need latching device, folding, launch convenient.

Utilize gravity to realize self-locking, driving safety is reliable.

The accompanying drawing drawing is described as follows:

Fig. 1 is a structural principle scheme drawing of the present utility model.

Fig. 2 is the scheme drawing after the utility model folds.

Fig. 3 is the body frame structure for automotive scheme drawing.

Fig. 4 is the hinged scheme drawing of pin of vehicle frame front portion and strut.

Fig. 5 is a car fork limit deflection device scheme drawing.

Fig. 6 is the self-locking mechanism scheme drawing.

Further describe the utility model below in conjunction with drawings and Examples

The utility model is based on the vehicle frame 21 of steel plate riveted joint, and the trailing wheel 20 of being furnished with flywheel 19 is contained in the rear end of vehicle frame 21.On the top that connects vehicle frame 21, the sprocket wheel 17 of a band pedal is equipped with in vehicle frame 21 middle and lower parts to pin 23 car saddle 1 hinge, and chain 22 couples together flywheel 19 and sprocket wheel 17.Vehicle frame 21, car forked standard bar 10, pull bar 5 and strut 14 are formed three-dimensional four-bar mechanism, realize longitudinal folding purpose.Car fork 11 is contained in the car forked standard bar 10, in the car fork 11 front-wheel 12 is housed, and car is pitched 11 upper ends handlebar 7 (see figure 1)s are housed.

Vehicle frame 21 of the present utility model is the

steel plates

24,25 that adopt two symmetries, and dashing respectively on

steel plate

24,25 has several riveted joint apertures, and washes out the steel plate at non-important stressed place, rivets the (see figure 3) that forms with the little axle 26 of several ladders.The little axle of ladder 26 two ends diameters after little axle 26 riveted joints of

steel plate

24,25 usefulness ladders, leave certain distance between two

steel plates

24,25, so that install or preserve other parts of the present utility model less than mid diameter.

In the four-bar mechanism,

bead

2,9 all is equipped with at pull bar 5 two ends, pull bar 5 one ends are by the front upper part swivel coupling of bead 2 with vehicle frame 21, pull bar 5 other ends are by bead 9 and car forked standard bar 10 upper end swivel couplings, direct selling 16 is hinged on an end of strut 14 the preceding bottom of vehicle frame 21, this direct selling 16 is designed in horizontal surface and 21 one-tenth specific angle D (see figure 4)s of vehicle frame, strut 14 at this end by bending.Packing ring 28,29 is housed between

steel plate

24,25 and strut 14, prevents that strut 14 is run into

steel plate

24,25 in expansion, when folding, sell directly to households with nut 27 fixing.Another direct selling 13 is hinged on strut 14 lower end of car forked standard bar 10, this design makes the utility model carry out folding in three dimensional space and expansion, after making it folding, car fork 10 is in a certain bits arm, front-wheel 12 and trailing wheel 20 are interfered (see figure 2) side by side and not, the purpose that realizes that the utility model not only can portablely carry but also can push-and-pull carry, front-wheel 12 and trailing wheel 20 are its use the same with existing bicycle on same straight line during expansion.Vehicle frame 21 inner chambers above bead 2 swivel couplings are provided with vee-block 4, vehicle frame 21 inner chambers before selling 16 hinged places directly to households are provided with vee-block 15, during expansion, by gravity pull bar 5 is embedded in the groove of vee-block 4, strut 14 embeds in the groove of vee-block 15, realize the self-orientation locking of pull bar 5 and strut 14, safe and reliable when guaranteeing to travel by bike.

Pin 23 cuts with scissors car saddle 1 by the top at vehicle frame 21, car saddle 1 can rotate around pin 23, realize the folding of car saddle 1 and launch, when folding, part car saddle 1 is ensconced in the vehicle frame 21, reduces the volume after folding, during expansion, the strut bar of car saddle 1 embeds in vee-block 18 grooves, utilizes gravity self-orientation locking, guarantees the firm of car saddle 1.

The utility model design has car fork 11 limit inflector assembly (see figure 5)s, and the deflection of restriction car fork 11 guarantees that push-and-pull carries.It is made up of the fixture block 8 that is fixed on the U-shaped frame 6 on the pull bar 5 and be fixed on the car fork 11.When folding, hold handle 3 and up carry, by gravity auto-folder car forked standard bar 10, U-shaped frame 6 blocks fixture block 8, and the restriction car is pitched 11 deflection (see figure 2)s.Hold handlebar 7 during expansion, up carry, launch car forked standard bar 10, U-shaped frame 6 breaks away from fixture block 8, and car fork 11 can rotate under the effect of handlebar 7 again, and controlling party is to (see figure 1).

The utility model utilizes vee-block and gravity self-orientation Locking Device (car saddle 1, pull bar 5 and strut 14 places) after the design of three places has expansion, be example with strut 14 self-orientation Locking Devices now, its principle of work (see figure 6) is described, under the effect of gravity, strut is subjected to F power after selling 16 directly to households when rotating, entering the groove of vee-block 15, and groove two inclined-planes of vee-block 15 are by strut 14 self-orientations, last locking strut 14 keeps deployed condition of the present utility model.

Claims

1. portable folding bicycle, it comprises vehicle frame (21), be contained in the trailing wheel (20) of vehicle frame rear portion band flywheel (19), be hinged on the car saddle (1) on vehicle frame top, be contained in the sprocket wheel (17) of vehicle frame (21) middle and lower part band pedal, the chain (22) that flywheel (19) and sprocket wheel (17) are coupled together, between vehicle frame (21) and car forked standard bar (10), play the pull bar (5) and the strut (14) of interconnect function, be contained in the car fork (11) in the car forked standard bar (10), be contained in the front-wheel (12) in the car fork (11), be contained in the handlebar (7) of car fork (11) upper end, it is characterized in that: vehicle frame (21) adopts the steel plate riveted structure, steel plate (24), (25) dash respectively several riveted joint apertures are arranged, and wash out the steel plate at non-important stressed place, alleviate weight of the present utility model, the little axle of several ladders (26) two ends penetrate steel plate (24) respectively, (25) rivet in several riveted joint apertures, after the riveted joint, two steel plates (24), (25) keep certain spacing between, preserve other parts.

2. the portable folding bicycle of narrating according to claim 1, it is characterized in that: vehicle frame (21), pull bar (5), strut (14) and car forked standard bar (10) constitute four-bar mechanism, bead (2) is equipped with at pull bar in the four-bar mechanism (5) two ends respectively, (9), the bead (2) of pull bar (5) one ends is hinged with vehicle frame (21), the bead (9) of pull bar (5) other end is hinged with car forked standard bar (10) upper end, direct selling (13) is adopted at strut (14) two respectively, (16) hinged with vehicle frame (21) and car forked standard bar (10) lower end, it is not vertical with vehicle frame with the direct selling (16) of strut (14) wherein to connect vehicle frame (21), form specific angle, make four-bar mechanism become the three dimensional space four-bar mechanism, folding back front-wheel 12 and trailing wheel 20 are interfered side by side and not.

3. the portable folding bicycle of narrating according to claim 1, it is characterized in that: vehicle frame (21) inner chamber is provided with vee-block (4), (15), when the utility model launches, pull bar (5) embeds in the groove of vee-block (4), strut (14) embeds in the groove of vee-block (15), the groove locking pull bar (5) of by gravity vee-block (4), the groove locking strut (14) of vee-block (15).

4. the portable folding bicycle of narrating according to claim 1, it is characterized in that: pin (23) is hinged on car saddle (1) on the vehicle frame (21), car saddle (1) is after pin (23) rotation is folding, preserve in vehicle frame (21) inner chamber, during expansion, strut bar on the car saddle (1) is embedded in the groove of the vee-block (18) that is located at vehicle frame (21) inner chamber, the groove locking strut bar of by gravity vee-block (18).

5. the portable folding bicycle of narrating according to claim 1, it is characterized in that: pull bar (5) is provided with U-shaped frame (6), on the car fork (11) fixture block (8) is housed.Fixture block (8) embeds in the U-shaped frame (6) when folding, (11) deflection of restriction car fork.