CN85200761U - Box-type foldoble bicycle - Google Patents

Abstract

The utility model discloses a box-type folding bicycle, belonging to the improvement of the bicycle, and a general folding bicycle often adopts the method of folding a bicycle frame but users carry inconveniently because of the disordered external form. The utility model adopts the X-shaped bicycle frame, and front and back wheels are arranged respectively in the front and back arcs of the bicycle frame when the bicycle frame is folded; the front wheel can be arranged through the turnover method, and the back wheel can be arranged through the sliding method. Meanwhile, the utility model also adopts the effective measures of folding feet pedals, a divided handle bar and a saddle, and has the advantages of compact fold and convenient portability and the appearance can be the box type after being folded.

Description

Box-type foldoble bicycle

The utility model belongs to the vehicle, particularly the improvement of bicycle.

In China, bicycle is still the prevailing vehicle.Therefore problems such as but at present the general-duty bicycle exists and carries inconvenience when not using, and shared locus is big when depositing need Foldable bicycle.Once developed various Folding Bicycles both at home and abroad, normally dwindled the size of car load with the way of folding stand.For example Japan adopts vehicle frame to receive folded mode to the trailing wheel direction at the OPC-1 type Folding Bicycle of operation in 1981; (1984. the 5th phases " beautiful with life 》 Za Chi) or at central frame beam partly by removable active structure, two wheels are folded up.(U.S.'s development and production.19853.20 the introduction of day Yangcheng Evening News) but the method for this folding stand, its profile of folding back is irregular thereby still inconvenient when carrying.How many car load shared space volume And in folding in addition back do not reduce, so generally do not use as yet so far.

The utility model purpose is to provide a kind of new Folding Bicycle ， And and avoids folding stand, under the prerequisite that guarantees vehicle frame rigidity, further increase folding degree, make folding back neat appearance, shared locus is littler, and folding, restore simple and conveniently, in light weight, be easy to carry about with one.

Folding Bicycle of the present utility model is custom-designed for the ease of carrying.Except that adopting the little wheel of diameter, design X-member frame, turnover front-wheel and can receive the trailing wheel that moves and the structure of other several detachable movable parts, gather into folds when easily two-wheeled being turned over without Che Shike, put the enclosure after Calipering become a rectangular box.The vehicle frame of this folded bicycle is X-shaped, and former and later two curved metal pipes that linked to each other by the arc back of the body on the same plane constitute.A top connection (2) is welded in the frontal arc upper end of X-member frame (1), is used to lock the position of stem (3).Frontal arc lower end and Qian shape turning rack (6) join.Below, frontal arc middle part is provided with central axis hole.Vehicle frame backarc upper end welding saddle joint (7), the backarc lower end is connected with trailing wheel chain stay (9).Two fork legs about the trailing wheel chain stay has, (termination is flat) connect respectively about two chain stay contact pin (11), have the curved groove of hook-type in the chain stay contact pin, the hind axle device makes rear axle be fixed on control position or shifts out curved groove and enter slideway (10) by tightening or unscrewing nut in the curved groove of chain stay contact pin.Be connected upright fork between saddle joint and chain stay contact pin, the upright end of sticking is fixed tightly in the saddle joint, about the lower end of fork leg be fixed tightly in respectively in the chain stay contact pin.Sliding onto the slideway of receiving folded position for hind axle is made of two metal sheets or plastic flagstone, the upper end of slideway is fastened on upright sticking with nut, the lower end is fastened in the chain stay contact pin, slideway upper end has the curved groove (Fig. 4) of hook forward, is the control position when travelling when hind axle is positioned at the curved groove terminal of chain stay contact pin; When bending the groove terminal on slideway moves to, hind axle then folds positions for receiving.During folding bicycle, the front-wheel upset places in the frontal arc of X-member frame, in the backarc of trailing wheel income vehicle frame.Front-wheel upset income vehicle frame is that the upset by front fork upset joint realizes.The income of trailing wheel enters the folded position of receipts by hind axle through slideway and realizes.The stem of control front-wheel travel direction is detachable.The handlebar parts are contained in the upper end of stem, and there is the solid fork (16) of stirring of a recessing lower end of stem.When using car, stem inserts in the lining of the top connection be connected vehicle frame frontal arc upper end, passes Chen Tao And and is inserted in the interior vertical tube of front fork lining (20) of the front fork upset joint (18) that links to each other with vehicle frame frontal arc lower end always.The lining sponson of top connection has two lugs that separate to constitute a blocking device.When loosering a bolt, stem can freely be extracted or insert, and when tighting a bolt, the lining upper diameter diminishes, and makes to clamp the stem that passes lining, makes stem can not move up and down longitudinal register.And can drive lining and rotate thereupon when stem rotates.One cover antifriction-bearing box (being made up of steel ball, steel retaining, steel bowl) is installed between lining and the top connection, lining can freely be rotated in top connection.Be positioned at and install a front fork upset joint (Fig. 3) on the Qian shape turning rack of vehicle frame frontal arc lower end, in vertical tube of front fork (19), front fork bushing pipe (21) and standpipe lining are arranged.The standpipe lining is embedded with the buy car in installments fork of stirring of handle riser lower end of horizontal key and injects.The standpipe lining tightens up on the front fork bushing pipe with tightening bolt (22), and Shi Cone face contacts between standpipe lining and the front fork bushing pipe.The standpipe lining is stirred fork when stirring by stem, and the front fork bushing pipe also rotates thereupon.Because the front fork bushing pipe is (flush fit) that is pressed into vertical tube of front fork, vertical tube of front fork can freely be rotated in the upset joint and Yi Tao Roll dynamic bearing (being made up of steel ball, ball retaining, steel bowl) has been installed between vertical tube of front fork and the upset joint.Therefore, when stem is stirred the rotation of vertical tube of front fork lining, drive front fork bushing pipe and vertical tube of front fork simultaneously and rotate, make front fork drive front-wheel and change travel direction.Hind axle is to be arranged on the terminal location of the curved groove of chain stay contact pin hook-type when travelling, and (Fig. 1) seen with the fastening location of nut in two ends.When car is folded, unclamp the spring latching device (34) on the brake lever support (5) at handlebar transverse tube (4) two ends, the left and right sides earlier, see that (Fig. 8) makes brake lever support pine from handlebar, then stem is pulled away standpipe lining and the top connection lining of upset in the joint.Because the upset joint on turning rack, can overturn front fork by Enough by Yi Dui Roll dynamic bearing (steel ball, ball retaining, ball bowl are formed) and positioning screw cap device in plane, vehicle frame place, therefore by the upset front fork front-wheel upset is entered in the frontal arc of vehicle frame.Unclamp the positioning screw cap on trailing wheel both sides then, hind axle is shifted out the curved groove of hook-type of chain stay contact pin, along the slideway trailing wheel that moves up, till hind axle entered the curved groove terminal of slideway upper end hook-type, at this moment, trailing wheel had been taken in and has been seen (Fig. 2) in the vehicle frame backarc.Because the variable in distance when hind axle is in control position and receives folded position between flywheel and the sprocket wheel causes the chain length variations, therefore on the trailing wheel chain stay, installed the loosening and tightening wheel device and regulated chain and change (Fig. 5).The pedestal and the support of loosening and tightening wheel (12) can relatively rotate, and adorn a torsion spring (25) between pedestal (24) and support (23), make loosening and tightening wheel that the tension force of tension chain be arranged.

Width behind the few bicycle folding of Minus, except the handlebar transverse tube that will extract was vertically placed, pedal was designed to folding.First kind of turning type pedal is to adopt pedal axle (26) to rotate the method (Fig. 6) of 90 degree: the pedal axle places in the 90 degree open recess of crank (27), be fixed in the crank by a location screw (29), And can gather into folds from revolving perpendicular to plane, vehicle frame place to turn 90 degrees to receive around its fixing screw.Be horizontal positioned when the pedal axle is in control position, the lock lock dog (28) that be contained on the crank recess this moment is in the locking positioning state, and the pedal axle can not move in groove.When opening lock lock dog (brake shoe is compressed in-to-in spring (30), open the slot opening part), then rotatable 90 degree of pedal axle are vertically received folded.Because the spring force effect in the brake shoe, no matter the pedal axle is in control position or the folded position of receipts, and brake shoe all makes it to tighten up.Second kind of separation type foot-operated (Fig. 7) is to adopt the method for pulling down the pedal axle.Have two location round pools on the pedal axle, pedal axle head head has the location circumferential groove.The pedal axle interts in crank hole, and the location circumferential groove of termination is blocked longitudinal register by the positioning spring card on the crank side (33).And have two positioning balls (32) slightly protruding in crank hole in the crank hole by the effect of spring pressuring plate (31).In positioning ball is stuck in location round pool on the pedal axle just, circumferential location then, the pedal axle can not move in crank hole and rotate.Receive when folding, unclamp the positioning spring card of crank hole side, extract two Jiao and pedal Bu spare And, make the pedal shaft extension go out part and place within the frame width scope respectively from the other end reeve of crank hole.For making folding back car load that a regular external form be arranged, saddle (14) is designed to and can dismantles easily.In the locking sleeve in the saddle joint of seatpillar insertion vehicle frame backarc upper end.Locking sleeve is by its degree of tightness of adjustable diameter and screw adjusting, so that the insertion of saddle and extracting.All be placed on rational position after handlebar, saddle split out, form a regular profile with folded bicycle, (lid) Calipering becomes the box-type folding car to put the enclosure.

The utility model total is reasonable, compact, and is folding easy.Need the position of degree of tightness in when folding dress, owing to adopt fly nut or band handle nut, thus folding, must any instrument during recovery, and volume after folding is little.The box-type folding car for living space little and need carry upstairs the resident and the people of jaunt all bring very big facility.

Fig. 1 is car load scheme drawing (motoring condition).

Among the figure: the upright fork of 1.X type vehicle frame 2. top connections 3. stems 4. handlebar transverse tubes 5. brake supports 6. turning racks 7. saddle joints 8. trailing wheels 9. trailing wheel chain stays 10. chute boards 11. chain stay contact pin 12. loosening and tightening wheels 13. front forks 14. saddles 15. hind axles

Fig. 2 is a car load folding position scheme drawing.

Among the figure: 3. stem 6. turning racks 12. loosening and tightening wheels

13. front fork 14. saddles 15. hind axles

Fig. 3 is a front fork switching mechanism scheme drawing.

Among the figure: 3. stem 6. turning racks 13. front forks

16. stir fork 17. Roll dynamic bearings 18. upset joints

19. vertical tube of front fork 20. standpipe linings 21. front fork bushing pipes

22. tightening bolt

Fig. 4 is the slideway structure scheme drawing.

Among the figure: 8: the 11. chain stay contact pin of the upright fork of trailing wheel 10. chute boards

Fig. 5 is a loosening and tightening wheel device scheme drawing.

Among the figure: 12. loosening and tightening wheels, 23. loosening and tightening wheel supports, 24. loosening and tightening wheel pedestals, 25. torsion springs

Fig. 6 is a turning type pedal scheme drawing

Among the figure: 26. pedal axles, 27. cranks, 28. lock lock dogs

29. positioning of rotating screw 30. springs

Fig. 7 is a separation type pedal scheme drawing.

Among the figure: 26. pedal axles, 27. cranks, 31. spring pressuring plates 32. are Dinged Wei Roll pearl 33. positioning spring cards

Fig. 8 is the scheme drawing of detachable brake lever support.

Among the figure: 5. brake lever support 34. rim locks link closely

An embodiment of the present utility model is:

X type vehicle frame diameter is 30 millimeters, and wall thickness is that 1.2 millimeters steel tube bending is welded.Each need connect the place of miscellaneous part at vehicle frame, the corresponding joint of all burn-oning.Vehicle frame frontal arc upper and lower end is at a distance of 410 millimeters, and the frontal arc bending spring is about 200 millimeters.Vehicle frame backarc upper and lower end is at a distance of 460 millimeters, and the backarc bending spring is about 250 millimeters.820 millimeters of vehicle frame total lengths.

The front fork preassembling links by turning rack and vehicle frame in the upset joint.The front-wheel external diameter is 12 inch, adopts steel rim and spoke.

Be connected by the stem parts between handlebar parts and the front fork parts.The handlebar diameter is 22 millimeters, and thickness is that 1.5 millimeters steel pipe is made.And stem employing diameter is 22 millimeters, and thickness is that 1.2 millimeters steel pipe is made, and length is 620 millimeters.A shift fork is equipped with in the stem lower end, stirs it in the lining of its insertion vertical tube of front fork and rotates, and changes the travel direction of front-wheel.

Rear wheel part basic with steamboat car identical directly.The trailing wheel external diameter is 16 inch, adopts steel rim and spoke.Wheel links to each other with vehicle frame by trailing wheel chain stay, upright fork.Chain stay and upright fork are made with steel pipe, and the cross section is an elliptical shape.The termination of two fork legs all is pressed into flat, is convenient to connect fastening.Chain stay length 300 millimeter, 530 millimeters of upright fork length, two fork leg Zhi Jian Net Ullages are from 110 millimeter.In motion, trailing wheel is fixed in the curved groove of chain stay contact pin of trailing wheel chain stay with band handle nut.When folding, then in the backarc by slideway income X type vehicle frame, chain length makes it keep certain force of strain with loosening and tightening wheel device Tiao Jie And.The loosening and tightening wheel device is made of ten tooth minor sprockets of two equal diameters, torsion spring, support etc.About 100 millimeter of loosening and tightening wheel device total length, width is 60 millimeter, is fixed tightly on the trailing wheel chain stay with screw.

Axis adopts the Type B axis, and crank length is 175 millimeters.The pedal axle revolves the folded method of receiving that turn 90 degrees with folded method of receipts that adopts the plug-in type locking connecting of crank or hinge type, with the width dimensions of the folding less back of Minus car load.

Brake system adopts pincerlike lock, and the brake lever support is fixed tightly on the handlebar transverse tube by Spring lock catch.When folding, the trip spring snap close unloads the brake lever support and returns and be put on the vehicle frame.

The box-type folding car owner wants dimensional parameters as follows: car load front and back wheel width between centers is 820 millimeters.Minimum centers-distance is 460 millimeters between sprocket wheel, flywheel.Stem and ground constitute the inclination angle of 77.3 degree, 50 millimeters of the front fork gradients, 175 millimeters of crank length.Car load is conducted oneself with dignity about about 12 kilograms.After folding, the Zhe Die Che Calipering that puts the enclosure become one long 820 millimeters, wide 180 millimeters, high 520 millimeters rectangular box.The enclosure is provided with handle, is convenient to carry.

Claims (10)

1, the utility model belongs to the improvement of bicycle, and is a kind of by vehicle frame, handle, forward and backward fork, forward and backward wheel, pedal, the Folding Bicycle that loosening and tightening wheel, saddle, overcoat and other accessories are formed.Feature of the present utility model is that the bicycle main body is an X type vehicle frame that forward and backward wheel can be placed in the arc of vehicle frame front and back, by mobilizable brake support and can pull out handlebar, the front fork (front-wheel) that can overturn, the trailing wheel that can move along the slideway receipts, foldable movable pedal and other accessories are realized folding of bicycle.

2, as the said bicycle of claim 1, it is characterized in that the X type vehicle frame that vehicle frame is made of former and later two continuous curved metal pipes of the arc back of the body in the same plane, (Fig. 1) vehicle frame backarc lower end is connected with the trailing wheel chain stay, have upright fork to link to each other on the vehicle frame backarc with between the chain stay contact pin, front and back wheel respectively is positioned within the front and back arc of vehicle frame when folding.(Fig. 2).

3, as the said bicycle of claim 2, it is characterized in that vehicle frame frontal arc lower end and front fork joining place, have one when folding rotatable front fork front-wheel is put into the rotating mechanism of vehicle frame frontal arc.(Fig. 3) trailing wheel chain stay and upright stuck one when folding, the slip on hind axle energy edge is concealed in slideway within the vehicle frame backarc with trailing wheel.(Fig. 4).

4, as the said bicycle of claim 3, it is characterized in that handlebar and stem from the vehicle frame frontal arc end junction by and insert in the vertical tube of front fork lining, the stem lower end is the fork of stirring that has groove, have in the vertical tube of front fork lining one with stir the horizontal key that cooperates of fork.(Fig. 3)

5, as the said bicycle of claim 4, two ends are the curved groove of hook forward to it is characterized in that being shaped as up and down by the hind axle slideway.The whole piece slideway is made of metal sheet or plastic flagstone.(Fig. 4).

6,, it is characterized in that being equipped with on the trailing wheel chain stay loosening and tightening wheel device, loosening and tightening wheel support and be fixed on to be connected with between the sleeve pipe on the chain stay and make loosening and tightening wheel can keep chain to have the torsion spring of certain tension force as the said bicycle of claim 5.(Fig. 5)

7, as the said bicycle of claim 6, it is characterized in that when folded state, have the softness of handle or braces or duricrust overcoat with the box shape of the topped one-tenth of car load with one.

8, as the said bicycle of claim 7, the brake lever support that it is characterized in that brake is to be fixed tightly on the handlebar transverse tube by the Spring lock catch form.The trip spring snap close can unload the brake lever support and fold so that extract stem.(Fig. 8)

9, as the said bicycle of claim 8, it is characterized in that pedal axle and crank form a hinge by a screw, and at crank to make the pedal axle be rotating shaft with the screw by opening one on the car lateral surface, make the groove of 90 degree rotations around crank, crank is provided with the lock lock of a locking pedal shaft position.(Fig. 6)

10,, it is characterized in that adopting between pedal axle and the crank inserted mode to be connected and with positioning spring card and locate ball and come position and lock as the said bicycle of claim 8.(Fig. 7)

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