CN204124271U - A kind of longitudinal Quickfolding bicycle frame - Google Patents

Abstract

The utility model discloses a kind of folding bicycle, its vehicle frame can be divided into front fork folding unit and back vent folding unit two parts, and folded form is longitudinal folding, and operating mode is for twisting or plug head tube and seatpost.Front fork and head tube are folded and placed to one by this Novel frame, and back vent is folding is accommodated in one with seatpost, utilizes two folding units to realize the folding of four positions of vehicle frame.Effectively can solve the problem of existing folding rigidity voluntarily and durability deficiency, have succinct reliable, the lines flow smoothly, operation is easily graceful, the feature that volume after folding is little and folding rate is fast.

Description

A kind of longitudinal Quickfolding bicycle frame

Technical field

The utility model relates to bicycle, be specifically related to a kind of can the bicycle of longitudinal fast folding.

Background technology

In recent years, cycle racing spreads and comes in the compatriots day by day paying attention to quality of life, and what accompany with it is popularizing of automobile and extensively spreading out of public transport, and because of these two factors, portable folding bicycle have also been obtained and accepts widely and use.Folding bicycle folding mode common is on the market generally laterally folded, namely realize the folding of vehicle frame by using the handle box-type folding controlled on crossbeam and other position to buckle and launch, this mode has the advantages such as operation is simple, with low cost, but because its folding position is positioned at crossbeam and head tube root, its rigidity and durability unsatisfactory.Outside common laterally folded bicycle, the folding bicycle of part higher gears is had to adopt longitudinal folding design, and obtain good safety and durability thus, but these longitudinal folding vehicle frames still have complex structure, complex operation, and volume after folding is bigger than normal and fall the shortcomings such as chain.

Summary of the invention

The utility model aims to provide a kind of longitudinal fold bicycle, and it has fast folding, and simple and reliable for structure, good looking appearance, exempts from lever operated feature.

The present invention is achieved in that longitudinal fast folding car, comprises back vent folding unit and front fork folding unit two parts.

The seat pipe of described vehicle frame main beam is provided with through hole, and back vent hook can be made to stretch into.

Described seatpost lower end is provided with non-circular irregular through hole, can clamp back vent connecting element.

Described head tube lower end with time lower end pipe axis parallel but not conllinear, end user realizes being locked of front fork by the head tube being rotatably inserted into pipe and front fork on front fork.

Described front fork is equipped with spring and stops bolt, and spring stops bolt and comprises check screw, spring leaf and latch, and spring stops bolt and is fixed on front fork root end by check screw, and latch is pushed down in the through hole of front fork root end in the compressing of spring leaf.

The latch that described spring stops bolt can contact with head tube after pitching before insertion, and the latch that head tube makes its through hole and spring stop bolt by rotating after inserting front fork overlaps, thus indenter pipe through-hole under the pressure of the spring, then fixes head tube and front fork.

The present invention realizes folding of front fork and back vent by controlling the plug of head tube and seatpost and rotation, end user can control head tube and seatpost by both hands respectively, carry out folding simultaneously and launch, have simple and efficient to handle, simple and reliable for structure, beautiful design is smooth, can effectively improve vehicle frame rigidity, exempts and bends over to carry out the loaded down with trivial details of multiple positions folding fastener operation.

Accompanying drawing explanation

Fig. 1 is overlooking of vehicle frame entirety and lateral plan;

Fig. 2 is overlooking and lateral plan under vehicle frame folding state;

Fig. 3 is the exploded drawings of vehicle frame;

Fig. 4 is back vent folding unit detail view 1;

Fig. 5 is back vent folding unit detail view 2;

Fig. 6 is front fork folding unit detail view 1;

Fig. 7 is front fork folding unit detail view 2;

Fig. 8 is front fork section components exploded drawings.

Detailed description of the invention

Below in conjunction with accompanying drawing, the longitudinal Quickfolding bicycle of one of the present invention is described in further detail.

In Figure of description, this longitudinal Quickfolding bicycle eliminate a bowl group, vertical, parts such as horizontal stroke, wheels, seat bag, brake system and drive systems, these parts can adopt prior art, do not belong to content category of the present invention, those skilled in the art can use existing parts according to actual needs, do not affect technique effect of the present invention, be not repeated herein.

The parts such as this longitudinal Quickfolding bicycle comprises pipe 3 on head tube 1, pipe bundle clip 2, front fork, front fork 4, spring stop bolt 5, vehicle frame main beam 6, seatpost 7, seatpost folder 8, back vent 9, front fork hinge 10, back vent hinge 11.

This longitudinal Quickfolding bicycle can be divided into back vent folding unit and front fork folding unit generally, and the control stalk of back vent folding unit is seatpost 7, and the control stalk of front fork folding unit is head tube 1.

Described back vent folding unit component part has girder seat pipe 15, seatpost 7, seatpost folder 8, back vent 9, is connected with hinge 11 between vehicle frame main beam 6 with back vent 9.

Further, girder seat pipe 15 and seatpost 7 all have through hole, and seatpost through hole 12 is non-circular irregular, and can overlap with girder seat pipe through-hole 13 under the control of seatpost folder 8.

Further, have an adjustable screw 14 between back vent 9 and girder seat pipe 15, the umbrella head of this screw can stretch in girder seat pipe through-hole 13 under the control of hinge 11.

Further, after adjustable screw 14 stretches into girder seat pipe through-hole 13, stretch into seatpost through hole 12 in turn, end user compresses seatpost further subsequently and is made the umbrella head of adjustable screw 14 be fixed in seatpost inwall, operation link thus, can make seatpost, girder seat pipe, back vent three realizes fixing.

Further, end user, when implementing to unclamp attended operation, only needs to stir seatpost 7, makes adjustable screw 14 extract seatpost through hole 12 and girder seat pipe through-hole 13 successively, subsequently collapsible back vent 7 and extract seatpost 7.

Corresponding, front fork folding unit comprises pipe 3, front fork 4, spring on head tube 1, clamp folder 2, front fork and stops the parts such as bolt 5 and front fork hinge 10 composition.

Further, front fork 4 and front fork are connected and fixed by hinge 10 between pipe 3, are then fixed in girder head tube 16 to sit pipe clamp 2.

Further, head tube 1 is made up of the pipe of more than three sections, and pipe 22 and secondary lower end pipe 21 to insert on front fork heel apertures 26 and front fork in pipe 3 respectively bottom.

Further, it is not identical that the external diameter of the pipe bottom 22 in head tube 1 is slightly less than time axle center of lower end pipe 21, two pipe, and the external diameter of the two is tangent.

Further, on front fork pipe 3 inwall axle center and front fork heel apertures 26 axis parallel but do not overlap, the axle center of front fork heel apertures 26 offsets slightly toward back vent direction compared with the inwall axle center of pipe on front fork 3.

Further, the pipe bottom of head tube 1 by inserting front fork heel apertures 26 after pipe on front fork 3 inwall, and utilizes its side-play amount, reaches pipe 3 on fixing front fork, front fork 4 and the object of himself by rotating.

Further, the spring be fixed on front fork by front fork screw hole 25 is stopped bolt 5 and is made up of check screw 19, spring leaf 20, latch 21.

Further, latch 21 inserts front fork through hole 24 on the pressure of spring leaf 20, contact with head tube 1 subsequently, the appropriate location of head tube pipe 23 is bottom provided with through hole 23, in rotation head tube 1 with in pipe 3 on fixing front fork 4, front fork and the action of himself, the latch 21 that head tube through hole 23 and spring stop bolt 5 overlaps, and latch 21 is insert head pipe through-hole 23 under the pressure of spring leaf 20, reaches and prevents head tube 1 from continuing to rotate and improper object of extracting.

Because the folding operation of head tube folding unit has come primarily of the rotation of head tube, so the hinge pipe of pipe 3 is provided with and stops into protruding 18 on front fork, the lower end of the girder head tube 16 of the vehicle frame main beam 6 corresponded is provided with two convex beaks 17.

Further, in the operation of fixing front fork folding unit, head tube 1 inserts pipe 3 and front fork heel apertures 26 on front fork, and to drive on front fork pipe 3 and front fork 4 with girder head tube 16 axle center for axle rotates, when rotating to a certain position, on front fork pipe 3 stop into protruding 18 inconsistent with a convex beak in girder head tube 16, on front fork, therefore pipe 3 and front fork 4 are fixed, head tube is able to independent rotation, reaches the object of pipe 3 and front fork on fixing head tube 1, front fork with stop-pass over-rotation.

Further, when end user will carry out the operation of folding front fork, only need rotate in the opposite direction head tube 1, fixing head tube 1 drives pipe 3 on front fork, when front fork 4 rotates to a certain position, stopping into protruding 18 on front fork on pipe 3 is inconsistent with another convex beak, on front fork, pipe 3 and front fork 4 are by rotation of only cannot following up, spring leaf 21 upper end that the spring be simultaneously fixed on front fork 4 stops bolt 5 contacts with the convex beak 17 of the other end, and upspring under the effect of this convex beak 17, latch 20 is driven to detach head tube through hole 23, thus, while two factors under effect, head tube is continued to rotate, loosen head tube 1, pipe 3 on front fork, fixing between front fork 4, and extract, then front fork 4 with front fork hinge 10 for axle carries out jackknife action.

After controlled the plug of seatpost 7 and the rotation of head tube 1 respectively by both hands, back vent 9 and front fork 4 are able to girder 6 direction longitudinal folding, and seatpost 7 and head tube 1 are extracted completely and put into the space between front fork 4 back vent 9 after folding subsequently, complete jackknife action.

When end user wants to launch vehicle frame, only need two hands to divide the upper end of holding head tube 1 and seatpost 7, to insert on front fork in pipe 3 and girder seat pipe 15 respectively, realize fast speed by the above principle and fix vehicle frame action.

Claims (17)

1. a longitudinal fast folding vehicle frame, comprises back vent folding unit and front fork folding unit, it is characterized in that front fork and the folding of back vent folding unit are triggered by head tube (1) and seatpost (7).

2. the longitudinal fast folding vehicle frame of one according to claim 1, is characterized in that back vent folding unit comprises girder seat pipe (15), seatpost (7), parts such as seatpost folder (8), back vent (9), back vent hinge (11) etc.

3. the longitudinal fast folding vehicle frame of one according to claim 2, is characterized in that girder seat pipe (15) is provided with a pipe through-hole (13), and seatpost (7) thus seat pipe through-hole (13) controls back vent (9).

4. the longitudinal fast folding vehicle frame of one according to claim 3, is characterized in that seatpost opening (12) is arranged at seatpost bottom, contacts, control the jackknife action of back vent (9) thus with back vent (9) adjustable screw (14).

5. the longitudinal fast folding vehicle frame of one according to claim 2, is characterized in that back vent (9) front portion is provided with adjustable screw (14) or other can fixed parts.

6. the longitudinal fast folding vehicle frame of the one according to any one of claim 2-5, is characterized in that adjustable screw (14) can realize being connected with seatpost (7) through seat pipe through-hole (13).

7. the longitudinal fast folding vehicle frame of one according to claim 1, is characterized in that front fork folding unit comprises pipe (3), front fork (4), spring on head tube (1), pipe bundle clip (2), girder head tube (16), front fork and stops the parts such as bolt (5), front fork hinge (10).

8. the longitudinal fast folding vehicle frame of one according to claim 7, is characterized in that head tube (1) is made up of multiple pipes that external diameter is different, and its lower end pipe (22) and secondary lower end pipe (21) can be inserted on front fork and be managed (3) and front fork root perforate (26).

9. the longitudinal fast folding vehicle frame of one according to claim 7, is characterized in that head tube (1) lower end pipe (22) external diameter is slightly less than time lower end pipe (21), two pipe axis parallels but not conllinear.

10. the longitudinal fast folding vehicle frame of one according to claim 7, is characterized in that lower end pipe (22) is tangent with time lower end pipe (21) external diameter.

The longitudinal fast folding vehicle frame of 11. one according to Claim 8 described in-10 any one, is characterized in that head tube (1) pitch pipe (3) before insertion and front fork root perforate (26) fixes aforementioned three parts by rotating realization afterwards.

The longitudinal fast folding vehicle frame of 12. one according to claim 7, is characterized in that spring stops bolt (5) and is made up of parts such as check screw (19), spring leaf (27), latches (20).

The longitudinal fast folding vehicle frame of 13. one according to claim 12, is characterized in that check screw (19) is fixed on front fork (4) by front fork screw hole (25), and latch (20) inserts front fork through hole (24) insert head pipe through-hole (23) afterwards.

The longitudinal fast folding vehicle frame of 14. one according to claim 7, it is characterized in that girder head tube (16) nearby fork have two convex beaks (17).

The longitudinal fast folding vehicle frame of 15. one according to claim 7, its feature front fork is managed (3) lower end and is provided with boss (18), and can contact with two flanges (17) of girder head tube (16).

The longitudinal fast folding vehicle frame of 16. one according to any one of claim 12-15, it is characterized in that spring leaf (27) can contact with the convex beak of two head tube (17) respectively with boss (18) in rotary course, realize insertion and the extraction of latch (20) and head tube (1).

The longitudinal fast folding vehicle frame of 17. one according to claim 1, is characterized in that front fork folding unit and the detachable use of back vent folding unit two parts, also should belong to the protection domain of this patent after fractionation.