CN200967525Y - Reinforced folding joint - Google Patents

Abstract

The utility model discloses a strengthened foldable joint. The utility model contains two connection boards made of light metal materials and one side of the two connection boards is impenetrate with a steel hinge shaft to hinge them together. The other side of one connection board is provided with a steel locking rod and a wear-resistant shaft sleeve is embedded into shaft holes of the connection board and hinge shaft or locking rod. The shaft sleeve embedded into shaft holes of the connection board and scrubbing with the steel hinge shaft or the locking rod can reduce the wearing significantly caused by friction the during the open or close operation of the foldable joint compared with the wearing caused by the friction of steel shaft and light metal materials such as aluminum alloy, prolong the service light and ensure a rigidity of the foldable joint.

Description

A kind of reinforcement folding joint

Technical field

The utility model relates to the folding joint that folding bicycle uses.

Background technology

The bicycle of current trend requires weight little, and especially the vehicle frame of folding bicycle adopts lightweight metal material more, as aluminum alloy etc., with expendable weight.The also corresponding employing lightweight metal material of its folding joint.One class bicycle folding joint is arranged, two connecting panels at a side pivotally attached lightweight metal material are arranged, the opposite side of connecting panel is equipped with the locking lever that two connecting panels that close up can be locked.The hinge axis of folding joint and locking lever can only use firm material ability proof strength.The locking folding joint uses frequent, folds at every turn or launch operation, the relative connecting panel pivoting friction of hinge axis; Locking lever rotates relative to connecting panel is existing, and axially movable friction is arranged again.Because the nonhomogeneous hardness of two kinds of materials that folding joint uses is very big, in use, the connecting panel wearing and tearing of aluminum alloy are very fast, make the quality of fit variation of folding joint, the matching loose of folding joint, can make the integral rigidity variation of folding bicycle, even influence the service life of folding bicycle.

Summary of the invention

The purpose of this utility model is to provide a kind of lightweight metal material that both can use to manufacture connecting panel, can guarantee again wear-resistant, to improve the reinforcement folding joint in service life.

Folding joint described in the utility model, the connecting panel that has two lightweight metal materials to make, two connecting panel one sides run through the steel hinge axis, make it hinged, the opposite side of a connecting panel is equipped with the locking lever of steel, embeds the abrasion resistant axle sleeve in connecting panel and axis hole that hinge axis or locking lever match.

Folding joint described in the utility model, in the axis hole of connecting panel, embedded the abrasion resistant axle sleeve, folding joint launch or the operating process of closing up in, the friction that matches with axle sleeve of the hinge axis of steel or locking lever, than light-weight metal frictions such as steel axle and aluminum alloys, can reduce wearing and tearing greatly, improve service life, guarantee the rigidity of folding joint.Again because axle sleeve has annular knurl and two ends flange outward, and the embedding of axle sleeve in connecting panel is firm, stressed when big even cycling jolts, the mobile increase wearing and tearing that also can not produce axle sleeve.

For preventing that axle sleeve and connecting panel from relatively rotating, axle sleeve has annular knurl outward.For preventing axle sleeve and connecting panel end float misalignment, there is flange at the axle sleeve two ends.

Description of drawings

A kind of block diagram of strengthening folding joint of Fig. 1;

Fig. 2 is the cutaway view that closes up state of Fig. 1;

The front view of Fig. 3 axle sleeve;

The front view of Fig. 4 axle sleeve;

A kind of block diagram of strengthening folding joint of Fig. 5;

A kind of block diagram of strengthening folding joint of Fig. 6.

The specific embodiment

Embodiment 1, and as Fig. 1, Fig. 2, two connecting panels 1,2 are the groove shape, and a side runs through hinge axis 3 makes it hinged.The opposite side of a connecting panel is equipped with the locking lever 4 parallel with hinge axis 3, this locking lever 4 is rotatable, and can move axially, locking lever 4 is outer to be equipped with 5 the bar cover 6 of oblique notching, fixing a lateral pin 7 on the locking lever 4 is stuck in the skewed slot 5, spring 8 is housed on the locking lever 4 withstands on the lateral pin 7, locking lever is imposed axial power.Rotation lock bar 4, lateral pin can drive locking lever 4 and move vertically along the skewed slot displacement.Another connecting panel 2 has axis hole 9,10, and its upper shaft hole 9 has radial opening, and locking lever 4 is radially snapped in, and its lower shaft hole 10 can insert the front end 11 of locking lever 4, is equivalent to locking bolt and inserts in the lockhole, and two connecting panels 1,2 that close up are lockable.Above structure is prior art.In hinge axis 3 and axis hole that connecting panel 1,2 cooperates, embed axle sleeve 12, in locking lever 4 and each axis hole that connecting panel 1,2 cooperates, also embed axle sleeve 12, annular knurl 13 is arranged with the cooperate firmness of increase axle sleeve outside the axle sleeve 12 with connecting panel, there is flange 14 axle sleeve 12 both ends or one end to prevent the axle sleeve end float misalignment, as Fig. 3, Fig. 4.

Embodiment 2, as Fig. 5, have skewed slot 15 on the locking lever 4, and at the fixing lateral pin 16 of skewed slot 15 1 sides, lateral pin one end is inserted in the skewed slot 15, and rotation lock bar 4 can make it to move axially, and all the other are identical with embodiment 1.

Embodiment 3, as Fig. 6, spring 17 is housed on the locking lever 4 withstands on the locking lever 4 on the fixing lateral pin 18, spur handle 19 vertically, locking lever 4 is moved on axially open connecting panel.When closing up, locking lever 4 slides along arc surface 20, and locking lever 4 moves on axially, inserts in the axle sleeve 12 under the effect of spring force.All the other are identical with embodiment 1.

Claims (3)

1, a kind of reinforcement folding joint, the connecting panel (1,2) that has two lightweight metal materials to make, two connecting panel one sides run through steel hinge axis (3), make it hinged, the opposite side of a connecting panel is equipped with the locking lever (4) of steel, it is characterized in that, in connecting panel (1,2) and axis hole that hinge axis (3) or locking lever (4) match, embed abrasion resistant axle sleeve (12).

2, a kind of reinforcement folding joint according to claim 1, it is characterized in that: described axle sleeve has annular knurl (13) outward.

3, a kind of reinforcement folding joint according to claim 1, it is characterized in that: there is flange (14) at described axle sleeve two ends.

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