CN201538402U - Handlebar position adjusting mechanism - Google Patents

Abstract

The utility model discloses a handlebar position adjusting mechanism used for adjusting a handlebar of a bicycle or a tricycle, which comprises a handlebar portion, an upper cover, a lower cover and a handlebar vertical tube. The to-be-clamped handlebar is approximately horizontal with an approximately circular or polygonal cross section; and the upper cover is used for clamping the handlebar. Steps are arranged on the top portion of the handlebar vertical tube; the upper cover used for clamping the handlebar is connected with one side of the lower cover; and the other side of the lower cover can be mutually locked through an independent locking mechanism. The lower cover is sleeved outside the vertical tube and positioned below the steps at the top end of the handlebar vertical tube, thereby the handlebar vertical tube can be tightly fixed onto a front fork through the locking mechanism, and the position of the handlebar can be adjusted repeatedly without influencing rigidity between the front fork and the handlebar to enable the bicycle to achieve better comfortability and safety performance. Simultaneously, a whole handlebar system can rotate relatively to the vertical tube by loosening the locking mechanism. When not being used, the handlebar can rotate to be placed down to the direction parallel to a bicycle body in order to decrease occupation space of the bicycle.

Description

A kind of adjusting mechanism of handle bar position

Technical field:

The utility model relates to the position adjusting mechanism of bicycle handle bar.

Background technology:

Distance between bicycle handle bar's handle and cushion has very big influence to bicyclist's traveling comfort, bicyclist's difference, and it requires the handlebar grip and the spacing of cushion also can be different.For making same bicycle can satisfy the traveling comfort requirement that different bicyclists use simultaneously, the handlebar of bicycle can be made the adjustable structure of fore-and-aft direction, changes handle to the distance between cushion by the angle of regulating handlebar, thereby adapts to different bicyclists' requirement.Nearly two during the last ten years, and folding bicycle has a great vogue, and handlebar can fold conveniently that car is minimized is an epochmaking demand.

Fig. 1 is a kind of handlebar position adjustment structure of existing bicycle, its handlebar 1a middle part is clamped by loam cake 2a and lower cover 3a, loam cake and lower cover one side are hinged by hinge 4a, lower cover is captiveed joint with the stem 5a of bicycle, and tie bolt 8a runs through loam cake, lower cover and vertical tube, is threaded onto on the oblique nut 9a of stem bottom, by screwing tie bolt, in vertical tube of front fork,, and loam cake and lower cover are clamped handlebar stem and oblique nut tensioner with the vertical tube of front fork chucking.When unclamping tie bolt, loam cake and lower cover unclamp handlebar, and at this moment, rotatable handlebar is regulated its angle of inclination, thereby regulate the distance of handle to cushion, make it satisfy bicyclist's traveling comfort requirement.And, pipe also Rotate 180 ° down,, make pipe is pressed close to the vehicle frame plane toward about 90 ° of left rotation and right rotation, reach partly folding function.Yet the handle after folding is run affairs must be vertical with vertical tube of front fork, far can not reach minimized purpose; Moreover the locking of the locking of its upper and lower cover and stem and oblique nut realizes by same tie bolt, when tie bolt loosens, tighten upper and lower cover, vertical tube and front fork is followed unscrew and lock.And in order to strengthen vertical tube and the oblique reliability of nut tensioner in front fork, tiltedly nut outer wall all can be processed with the perpendicular tooth line 15a of the friction between pipe in increase and the front fork, these perpendicular tooth lines all can wear and tear the front fork tube wall once in each tensioner process, after repeatedly regulating the handlebar angle, the front fork inwall may have bigger wearing and tearing, it can exert an influence to the rigidity of front fork, thereby influences the safety of cycling.In addition, because same screw must be played the part of two degree of tightness roles simultaneously, stroke needs very big, can't replace to cancel the operation of hand tool with general quick locking at all.

Recent two decades comes, general traditional folding bicycle general-duty handlebar vertical tube joint adopts as Fig. 7 mode, the vertical tube that pipe central authorities are stretched under having,, there is joint at its end, and joint has upper and lower covers, and loam cake is close to vertical tube, lower cover is close to vertical tube of front fork, upper and lower covers links opposite side on one side to be had without the instrument catch gear of easy operating again, from and can ride by fastening handlebar, can loosen again.Allow handlebar down turn down 180 °, reduced volume.This nearly 25 years folding means in fashion, no doubt easy to operate, and it is selected to a certain extent via the design of hinge angle optimum position, the folding back of pipe, but serious shortcoming is also arranged, one for not regulating managing longitudinal separation in order to driving, and two is that requirement on machining accuracy is higher, makes cost, weight, life-span and safe everyway are not ideal enough.This kind method Foldable handlebar requires folding joint intensity higher, and folding position precision height makes that folding joint is heavier and tooling cost is higher (30-50 cover/unit).This structure is for less to folding volume, bicycle brake generally is transferred to (with the angle of horizontal surface) about 0 ° to angle, do not meet the bicycle standard-required, can adjust the brake lever angle in order to reach when folding, must increase other mechanism realizes, make inconvenient operation, cost will increase about 30 yuan, weight increases about 0.2KG.

The utility model content:

The purpose of this utility model is to provide that a kind of cost is low, the life-span long, it is separate to tighten up between the clamping of handlebar and stem and vertical tube of front fork, handlebar can be that axle rotates and vertical direction is that axle rotates easily with the horizontal direction, and rigidity and the good adjusting mechanism of handle bar position of safety.

Adjusting mechanism of handle bar position of the present utility model, the loam cake, lower cover and the stem that comprise the clamping handlebar, stem can be anchored on the front fork by catch gear, the loam cake of clamping handlebar is connected with lower cover one side, opposite side is locked mutually by independent catch gear, step is arranged at the stem top, and lower cover is placed in outside the stem and under the riser top step.

Handlebar position adjustments described in the utility model and foldable structure, the catch gear that its stem can pass through is fixed on the front fork, the loam cake of clamping handlebar is connected with lower cover one side, opposite side is locked mutually by independent catch gear, and the clamping of loam cake and lower cover and the securing device that unclamps with stem and front fork are independent of each other.Regulate handlebar to cushion apart from the time, do not need to screw or unclamp being connected of stem and front fork, directly unclamp the catch gear of loam cake and lower cover, with level is that a rotation handlebar gets final product, whole process does not influence the degree of tightness of stem and vertical tube of front fork, can not occur in the existing product, tiltedly the nut outer tooth thread is because of degree of tightness repeatedly, rub and scratch the vertical tube of front fork inwall repeatedly, influence the situation of front fork rigidity, regulating the handlebar position repeatedly also can not influence the rigidity of front fork, and the safety performance of bicycle is better.Simultaneously, when unclamping catch gear, can vertically be the whole rotation upper and lower cover of axle, can carry the relative stem rotation of whole handle bar; Bicycle is not when using, and handlebar can go to the direction with the vehicle body almost parallel, to reduce the bicycle occupation space.It can be used on the folding bicycle, under the situation of not using folding joint, handlebar is received a folded side of closing up in vehicle frame, reduces the volume behind the bicycle folding, does not install foldingly on the folding bicycle stem, can strengthen the rigidity and the aseismicity of folding bicycle.

Over more than hundred year, is adjustable folding of pipe one of international industry utility model man principal proposition of doing one's utmost to study, patent reaches the hundreds of item, can all be blemish in an otherwise perfect thing. the utility model utilizes the new idea combination, reach unprecedented cost low (15 yuan), (0.3KG) in light weight, the solution of safety.It seems simply, but really is the important breakthrough of two-wheeled, the three-wheel vehicle.

Description of drawings:

Fig. 1 is a kind of scheme drawing of existing handlebar position adjustment structure;

Fig. 2 is the scheme of installation of handlebar position adjustment structure of the present utility model;

Fig. 3 reconciles the decomposing schematic representation of structure for the handlebar position;

Fig. 4 is stem and front fork scheme of installation;

Fig. 5 is the handle bar structure scheme drawing;

Fig. 6 is the handle bar structure scheme drawing;

Fig. 7 is a kind of existing general general handlebar foldable structure scheme drawing.

The specific embodiment:

A kind of handlebar position adjustment structure, as Fig. 2, Fig. 3, the loam cake 2 of its clamping handlebar 1 and lower cover 3 one sides are hinged by rotating shaft 4, opposite side is equipped with the catch gear that it can be locked mutually, the described catch gear that upper and lower covers is screwed mutually can be an eccentric links mechanism 14 commonly used in the folding bicycle, the quick detach that promptly is commonly called as, as shown in Figure 2, it can lock and unclamp upper and lower cover quickly and easily; Catch gear also can be bolt, and is not shown.Lower cover 3 is placed under the outer step of stem 5, and its upper surface is fluted 7, and there is step 6 on the top of stem 5, and the groove of lower cover matches with the step of stem.Stem is anchored on the vertical tube of front fork 10 by catch gear, this catch gear, as Fig. 3, comprise the oblique nut 9 of stem bottom and the tension nut 8 in the stem, tie bolt 8 runs through stem, be threaded onto on the oblique nut 9 of stem bottom, by screw tightening nut with oblique nut and stem tensioner in vertical tube of front fork 10.

Stem is anchored on the vertical tube of front fork 10 by catch gear, and this catch gear also can comprise and embrace the exterior pipe clamp 2e of stem as Fig. 4, screws pipe clamp nut 3e, tension nut 4e and tightening nut 1e.The strip shape breach is arranged at the bottom of stem, tension nut 8 runs through stem, be threaded onto the tightening nut that is fixed together with vertical tube of front fork, make stem be pressed in a tubular axis and hold, by screwing the pipe clamp nut stem distortion is anchored on the vertical tube of front fork then with suitable dynamics.

The step at the groove of lower cover upper surface and stem top can be circle, and step cutting pattern matches rotatable with circular groove, unclamp catch gear after, finish the rotation of handlebar, its operation is simpler, convenient.

The upper surface of stem step cutting pattern 6 and corresponding position, the handlebar of clamping 1 position can be provided with handlebar and be held the corresponding arc groove 11 of partial shape, when upper and lower cover passes through catch gear clamping handlebar, handlebar can embed in the arc groove, it can make handlebar be held reliably more and be firm, and handlebar can not slide because of the touching of external force.

The corresponding position, handlebar 1 position of stem step cutting pattern 6 upper surfaces and clamping can be provided with handlebar and be held two grooves 11 of the corresponding arc of partial shape, a groove becomes 90 ° with vehicle frame, make the handlebar preceding adjustable position of normally riding, another groove roughly with the vehicle frame plane parallel, position after handlebar is folding reaches minimum volume, it can guarantee that handlebar all can not slided because of the touching of external force by the failure-free clamping when riding condition and folded state.

Constant in order to guarantee that handlebar 1 can remain on the angle of adjusting, between the gripping section of upper and lower cover and stem anti-skid structure can be set.As Fig. 3, on the arc groove 11 on stem step cutting pattern 6 surfaces double wedge 12 can be set, handlebar 1 portion of being held is provided with the recessed tooth 13 that is meshed with it, profile of tooth restriction by shaggy tooth, the handlebar that is held can failure-free remains on the angle of being adjusted and does not rotate, even also can not swing by the collision of big external force, handlebar is fixing more solid and reliable.Anti-skid structure between the gripping section of upper and lower cover and stem also can be held the annular knurl structure of part surface for arc groove surface and handlebar.Anti-skid structure between the gripping section of upper and lower cover and stem can also be held anti-slip rubber pad between part for arc groove and handlebar.

In order to increase the handlebar strength and stiffness, handlebar can be the structure of Fig. 5, the left and right sides that reaches regulating mechanism under the rigid body 2c (as pipe fitting) is respectively arranged about its pipe and link to each other with approximate horizontal and cross section circular or polygonal position, and it is crooked to avoid when folding and the mutual interference of car parts (especially vehicle frame) before and after can be simultaneously to stretch rigid body for these twice, makes that the car volume after folding is littler, safety performance is better.

For the handlebar upper-lower position also can be adjusted, handlebar also can be as Fig. 6 structure, comprises T shape 1d, vertical tube 2d and catch gear 3d (can be eccentric links mechanism, the quick detach that promptly is commonly called as).T shape is inserting in the vertical tube, and is by catch gear that T shape handle and vertical tube is fastening.By regulating T shape the degree of depth of inserting vertical tube, the upper-lower position of scalable handlebar makes the comfort level of car better.

Claims (9)

1. adjusting mechanism of handle bar position, the loam cake, lower cover and the stem that comprise the clamping handlebar, stem can be anchored on the front fork by catch gear, the loam cake of clamping handlebar is connected with lower cover one side, it is characterized in that: the opposite side of loam cake and lower cover is locked mutually by independent catch gear, step is arranged at the stem top, and lower cover is placed in outside the stem and under the stem top stage.

2. adjusting mechanism of handle bar position according to claim 1 is characterized in that: the catch gear of described loam cake and lower cover is an eccentric pulling bar structure.

3. adjusting mechanism of handle bar position according to claim 1 is characterized in that: have 1 and clamping handlebar shape corresponding grooves above the stem top stage at least.

4. adjusting mechanism of handle bar position according to claim 1, it is characterized in that: two and clamping handlebar shape corresponding grooves are arranged on the stem top stage, a groove becomes 90 ° with the vehicle frame plane, another groove roughly with the vehicle frame plane parallel, can be close to vehicle frame, the volume after folding minimum after making handlebar folding.

5. according to any one described adjusting mechanism of handle bar position in the claim 1 to 4, it is characterized in that: the loam cake the inside has and clamping handlebar shape corresponding grooves.

6. adjusting mechanism of handle bar position according to claim 1 is characterized in that: between the gripping section of upper and lower cover and stem anti-skid structure is arranged.

7. stem position adjusting mechanism according to claim 6 is characterized in that: described anti-skid structure is the shaggy tooth that cooperatively interacts between upper and lower cover and handlebar retained part.

8. adjusting mechanism of handle bar position according to claim 1, it is characterized in that: the left and right sides that reaches regulating mechanism under the rigid body is respectively arranged about handlebar and link to each other with approximate horizontal and cross section circular or polygonal position, it is crooked forward or backward simultaneously to stretch rigid body these twice.

9. adjusting mechanism of handle bar position according to claim 1 is characterized in that: described handlebar comprises T shape handle, vertical tube and catch gear, and T shape is locked by catch gear inserting in the vertical tube.

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