CN2261980Y

CN2261980Y - Reinforced folding joint of foldable bicycle

Info

Publication number: CN2261980Y
Application number: CN 96237086
Authority: CN
Inventors: 韩德玮
Original assignee: LIU NONGYING
Priority date: 1996-06-19
Filing date: 1996-06-19
Publication date: 1997-09-10
Anticipated expiration: 2006-06-19

Abstract

The utility model relates to a reinforced folding joint of a folding bicycle; end heads of two sections of steel pipes are respectively fixed to connection blocks; two sides from two connection blocks are hinged; both sides of a hinging point are provided with a locking component, and a joint is fastened at the outer edges of the connection blocks. The reinforced joint enables two connection blocks to have more than three connected bearing force points; compared with the common folding bicycle joints with two connected points, which obviously improves the rigidity.

Description

The reinforcement folding joint of folding bicycle

The utility model relates to the folding joint of the folding joint of folding bicycle, particularly a kind of heavier-duty.

Folding bicycle is fixed a contiguous block respectively in the termination of two sections steel pipes of vehicle frame usually, and a side of two contiguous blocks is hinged, and after two contiguous blocks were involutory, the cooresponding opposite side of hinge tightened up two contiguous blocks with a snap close.Because bicycle both may be subjected to vertical external force also may be subjected to lateral external forces to produce moment of flexure on joint.And only cooresponding 2 continuous the tightening up of folding joint when upper and lower 2 continuous folding joints are subjected to transverse force, are just disliked insufficient rigidity slightly; , be subjected to longitudinal force as the same at left and right 2 when continuous.

But the utility model is intended to provide the reinforcement folding joint that a kind of multiple spot tightens up, to improve the rigidity of folding joint.

Described folding bicycle reinforced joint is fixed a contiguous block respectively at two sections steel tube heads, and a side of two contiguous blocks is hinged, has locking piece at the contiguous block outward flange two contiguous blocks to be tightened up mutually in the hinge both sides.

Described folding bicycle reinforced joint, two contiguous block is hinged and connected on one point, and the hinge both sides have locking piece to link to each other again.Constitute the continuous folding joint of multiple spot thus and can obviously improve rigidity than 2 continuous joints that have earlier.

The front view of a kind of described folding joint of Fig. 1;

Fig. 2 is the A-A view of Fig. 1;

Fig. 3 is the half-open position of the described joint of Fig. 1;

The cutaway view of a kind of described folding joint of Fig. 4;

Fig. 5 is the B-B view of Fig. 4;

Fig. 6 is a kind of cutaway view of described folding joint;

Fig. 7 is the C-C view of Fig. 6.

Embodiment is just like Fig. 1-3

Two sections steel pipe 1 end captive joint pieces 2, two contiguous blocks 2 are hinged in a side, there is locking piece that two contiguous blocks 2 are tightened up mutually in hinge 6 both sides, this locking piece is the pin 3 that runs through two contiguous blocks 2 respectively, the axis of pin 3 is good to the deviation in driction joint center that deviates from hinge 6, one end of one of them pin 3 is equipped with rotating hook 4, and this hook 4 can be caught on another pin 3.The other end of two pins 3 is a hinged connecting rod 7 respectively, and the another side of two connecting rods 7 is hinged, one of them connecting rod 7a is the groove shape, it is the U-shaped cross section, another connecting rod 7b is a pole spar, but in the groove of two connecting rods 7 pole spar card entry slot shape bar side by side the time, 3 and two connecting rods of two pins 7 are common to constitute four connecting rod catch gears 5.Fig. 1 is the locking state of described folding joint, and the hook 4 on its top tightens up an end of two pins 3, and four connecting rod catch gears 5 of bottom tighten up the other end of two pins 3.Two pins 3.Running through on the each point that two contiguous blocks 2 are two lines all has coupling mechanism force to compress two contiguous blocks 2.The hinge 6 of two contiguous block 2 one sides also tightens up power.This joint has tightening up a little more than three, and the rigidity after the locking is rather good.The hook 4 on Fig. 1 top is thrown off, in four connecting rod catch gears, 5 outside application of forces, promptly Fig. 2 deviate from the bottom surface direction, when this joint is half-open position as shown in Figure 3.

Embodiment two is as Fig. 4,5

Two contiguous blocks 2 are bowl-shape, and diameter small one and large one can be chimeric mutually, locking piece is in hinge 6 sides, pin 3 is arranged, and it traverses contiguous block 2, bowl-shape contiguous block 2 edges have groove 11 that pin 3 is come in and gone out, the hinged pressure handle 8 of an end of pin 3, and the pressure handle front side has boss 9 can compress the outward flange of contiguous block 2, the other end of pin 3 has screw thread can screw on nut 10, but the effective length of these nut 10 adjusting pins 3 is the degree of tightening up of whole joint with the thrust of adjusting pressure handle 8.For preventing that thrust from crossing the distortion of the bowl-shape contiguous block of ambassador, in little contiguous block 2, there is the inverted draw cut 12 of semi-surrounding pin 3 to support.The all effective big friction force of the ring circumferential edges of the bowl-shape connector 2 of two tablings of this joint, exterior in addition 3 link to each other, and locking back rigidity is also fine.

Embodiment three is as Fig. 6,7

Be with push pipe 13 at the middle part of pin 3, its two ends push against the inwall of little contiguous block 2, and big contiguous block 2 middle parts have locating dowel pin 14 to may be stuck in the shrinkage pool at push pipe 13 middle parts, and are loosening with restriction push pipe 13.All the other are identical with embodiment two.

Claims

1, the reinforcement folding joint of folding bicycle, fix a contiguous block (2) respectively in two sections steel pipes (1) termination, one side of two contiguous blocks (2) is hinged, it is characterized in that: hinge (6) both sides have locking piece at contiguous block (2) outward flange two contiguous blocks (2) to be tightened up mutually.

2, by the described reinforcement folding joint of claim 1, it is characterized in that: locking piece is the pin (3) that runs through two contiguous blocks (2) respectively, one end of a pin (3) is equipped with rotating hook (4), this hook can be caught on another pin (3), the other end of two pins (3) is a hinged connecting rod (7) respectively, and the other end of two connecting rods (7) is hinged.

3, by the described reinforcement folding joint of claim 2, it is characterized in that: connecting rod (7) is divided into the groove shape connecting rod (7a) and the solid connecting rod (7b) in U-shaped cross section, and when two connecting rods (7) were arranged side by side, connecting rod (7b) can snap in the groove of connecting rod (7a).

4,, it is characterized in that by the described reinforcement folding joint of claim 1: as the axis of the pin (3) of one of locking piece to deviating from hinge (6) deviation in driction joint center.

5, by the described reinforcement folding joint of claim 1, it is characterized in that: two contiguous blocks (2) are bowl-shape and directly can be chimeric mutually toward small one and large one.

6, by claim 1 or 5 described reinforcement folding joints, it is characterized in that: locking piece is to have pin (3) to traverse contiguous block (2) in the hinge side, bowl-shape contiguous block (2) edge has groove (11) that pin (3) is come in and gone out, the hinged pressure handle of one end (8) of pin (3), pressure handle (8) front side has boss (9) can compress the outward flange of contiguous block (2), and the other end of pin (3) has screw thread can screw on nut (10).

7, by the described reinforcement folding joint of claim 6, it is characterized in that: inverted draw cut (12) or push pipe (13) support and connection piece (2) are arranged.