CN201343114Y

CN201343114Y - Telescopic structure of steering shaft of bicycle

Info

Publication number: CN201343114Y
Application number: CNU2009200004346U
Authority: CN
Inventors: 曾伟震
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-07
Filing date: 2009-01-07
Publication date: 2009-11-11
Anticipated expiration: 2019-01-07

Abstract

The utility model provides a bicycle steering shaft extending structure, which is provided with a main shaft pipe and a handle connecting pipe above a front fork of the bicycle, the steering shaft extending structure is mainly erected on the main shaft pipe and comprises a positioning component, a pressing component, a screw rod, a screw pipe and an extension shaft, the screw pipe is positioned in the main shaft pipe for the screw rod to go up and down, the screw rod synchronously drives the extension shaft to go up and down, the extension shaft drives the handle connecting pipe to go up and down, and the pressing component can be used for quickly reducing or expanding the inner diameter to loosen the positioning component, so that the positioning component can be used for clamping the extension shaft or not; therefore, the positioning component is tightly clamped or loosened on the telescopic shaft by the tightening component, and when the positioning component is loosened, the screw rod can be moved up and down to link the telescopic shaft to adjust the height, so that the aim of adjusting the telescopic shaft more conveniently and quickly is fulfilled.

Description

The bicycle control is to the shaft extension shrinking structure

Technical field

The utility model relates to a kind of bicycle control to the shaft extension shrinking structure, relevant with bicycle, especially refer to be applied to the adjustment of bicycle handle height, and the structure that fast short stopping button is arranged, unclamp fast, convenient, safe and reliable a kind of bicycle control is to the shaft extension shrinking structure.

Background technology

Traditional bicycle can't adjust the height of bicycle handle, can only select (gentlewoman's type or sport car type) by style, the height of bicycle handle, can't adjust arbitrarily, perhaps by the selection of bicycle wheel size, decide the height of bicycle handle, the height of this bicycle handle all is a certain altitude, yet human body height differs, except selecting bicycle style, wheel size, more should select the height of handle, with in response to everyone height, pushing, or make sitting posture or the appearance of lying prone in response to the person's of riding strain at any time;

In the time of by bike, the muscle group of mainly exerting oneself is at lower limb, and also must continue firmly above the waist, keeps body steadiness, especially the muscle of shoulder, neck; So, for a long time by bike, also may cause shoulder, the stiff discomfort of upper arm and neck, the bicycle sport of sitting posture increases dmm, make the backache symptom more obvious, especially the lower bicycle of some handle, can allow knight's forward lean, increase waist and bend degree, the easier symptom of backache that allows occurs and aggravation, too low handgrip can allow knight's body gesture become antecurvature appearance, in order to allow sight line keep a straight line, neck can become elevation angle appearance, so the muscle of neck rear side feels tired easily, and the symptom that occurs aching, suitable handgrip height is for allowing shoulder loosen and the slightly rectangular angle of bend of elbow joint;

Though the detachable bicycle can be done the assembling of handle, use the turnover mode and make up, perhaps stretch mode, it adjusts handle height and inconvenient, essential multiple tracks step, very inconvenience.

The utility model content

The purpose of this utility model is to provide a kind of bicycle control to the shaft extension shrinking structure, the height that it can quick and convenient adjustment handle, reliable and secure outside, Shang Kegeng does the action that fastens fast, with the height of more convenient adjustment handle.Simultaneously, can in travelling, adjust the height of handle, need not stagnation of movement.

A kind of bicycle control of the utility model is to the shaft extension shrinking structure, and it is to have a spindle tube and leader to take over above the bicycle front fork, and control mainly is to be erected on the spindle tube to the shaft extension shrinking structure, and it includes:

A certain hyte part and a urgent assembly, positioning component and urgent assembly are positioned the spindle tube top, and urgent assembly is a clasp, and clasp can dwindle fast or enlarge the clasp internal diameter, and clasp promotes positioning component, location one screwed pipe in this spindle tube;

One screw rod, screw rod screw in screwed pipe, and a rotating head is arranged at the screw rod top;

One telescopic shaft, screw rod is positioned at telescopic shaft, and screw rod and telescopic shaft be articulated, and screw rod and telescopic shaft can penetrate in spindle tube, and this telescopic shaft is provided with a positioning groove, and positioning component is gone in the positioning groove, and telescopic shaft one position connects establishes this handle and takes over;

In view of the above, with urgent assembly with the urgent clip of positioning component or unclamp in the positioning groove of telescopic shaft, when positioning component unclamps, rotatable this rotating head, make the screw rod upper and lower displacement,, reach the purpose of convenient quick adjusting telescopic shaft with interlock telescopic shaft adjustment height.

Wherein, the positioning groove of this telescopic shaft is located at the telescopic shaft surface, is axial setting, and this positioning component one end is a clipping block, and clipping block is gone in the positioning groove, and other end surface is a screw thread, with in conjunction with a nut.

Wherein, the clasp of this urgent assembly has an opening, and the eccentric handle of the internal diameter of clasp can be dwindled or enlarge to opening part pivot joint one.

Wherein, this clasp radial position is provided with a screw that supplies positioning component to penetrate.

Wherein, this screwed pipe bottom is provided with a bulge loop, is provided with ring in this spindle tube, encircles in bulge loop is fixed in.

A kind of bicycle control is to the shaft extension shrinking structure, and its advantage and effect are: the height that the utility model can quick and convenient adjustment handle, reliable and secure, and can do the action that fastens fast, the height of more convenient adjustment handle.Simultaneously, the utility model can be adjusted the height of handle in travelling, and need not stagnation of movement.

Description of drawings

Fig. 1 is a perspective exploded view of the present utility model.

Fig. 2 heightens the generalized section of handle for the utility model.

Fig. 3 fastens positioning component for the urgent assembly of the utility model the generalized section of telescopic shaft.

Fig. 4 turns down the generalized section of handle for the utility model.

Concrete label is as follows among the figure:

Ring in 10 spindle tubes, 101 screw threads 102

11 baffle rings, 20 positioning components, 21 clipping blocks

22 screw threads, 23 nuts, 30 urgent assemblies

31 clasps, 311 screws, 312 openings

32 decenter clutches, 40 telescopic shafts, 401 positioning grooves

41 screw rods, 411 rotating heads, 42 screwed pipes

421 bulge loops, 50 handles are taken over 51 handles

The specific embodiment

Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.

At first, a kind of bicycle control of the utility model is to the shaft extension shrinking structure, shown in Fig. 1 to 4, it includes a spindle tube 10, certain hyte part 20, one urgent assembly 30, one telescopic shaft 40, one screw rod 41 and a screwed pipe 42, this spindle tube 10 is positioned at bicycle front fork upper end, can freely rotate in the bicycle frame front end, spindle tube 10 tops are provided with screw thread 101, screw thread 101 is with several baffle rings 11 (as Fig. 2) that are spirally connected, baffle ring 11 has negative thread, and urgent assembly 30 is a quick clasp, the combination of a clasp 31 and an eccentric handle 32, clasp 31 has an opening 312, opening 312 places articulate eccentric handle 32, and eccentric handle 32 can be swung to dwindle or to enlarge the internal diameter of clasp 31, and clasp 31 radial positions are provided with a screw 311, screw 311 penetrates for positioning component 20, positioning component 20 1 ends are a clipping block 21, and positioning component 20 end surfaces in addition has screw thread 22, and screw thread 22 is in conjunction with a nut 23, positioning component 20 is along with urgent assembly 30 dwindles internal diameter, make positioning component 20 can clip on telescopic shaft 40;

This telescopic shaft 40 penetrates in spindle tube 10, these telescopic shaft 40 surfaces are provided with a positioning groove 401, positioning groove 401 is axially to be provided with, the positioning groove 401 of this telescopic shaft 40 is a lweis hole, the clipping block 21 of positioning component 20 is gone in the positioning groove 401, clipping block 21 is the ladder type piece, telescopic shaft 40 1 positions connect the handle of establishing bicycle and took over for 50 (as shown in Figure 2), handle adapter 50 connects again establishes handle 51, this screw rod 41 is gone in telescopic shaft 40 and the screwed pipe 42, screw rod 41 is articulated in telescopic shaft 40, screw rod 41 tops are provided with a rotating head 411, and this screwed pipe 42 is positioned in the spindle tube 10 and penetrates in the telescopic shaft 40, and screwed pipe 42 bottoms are provided with a bulge loop 421, the external diameter of bulge loop 421 is smaller than spindle tube 10 internal diameters, and screwed pipe 42 bottom bulge loops 421 are fixed in interior ring 102 in the spindle tube 10;

By above-mentioned textural association, a kind of bicycle control of the utility model is to the shaft extension shrinking structure, shown in each figure, as long as open eccentric handle 32 during adjustment, make to enlarge the internal diameter of clasp 31, after clasp 31 unclamps, positioning component 20 moves with clasp 31 is slightly outer, the positioning groove that props up telescopic shaft 40 401 no longer tightly, the clipping block 21 of positioning component 20 can be opened and make rotation rotating head 411 for the positioning groove 401 free upper and lower displacements of telescopic shaft 40, and screw rod 41 is rotated, the screw thread relative motion of screw rod 41 and screwed pipe 42, can make screw rod 41 rise or descend, and screw rod 41 is articulated with telescopic shaft 40, so screw rod 41 drive the action that telescopic shaft 40 synchronous works rise or descend, and make telescopic shaft 40 (or handle 51) do upper and lower displacement, adjust desired height;

During the location, as long as pull eccentric handle 32 playback, work dwindles the internal diameter of clasp 31, and after clasp 31 fastenings, positioning component 20 moves in omiting with clasp 31, the positioning groove that props up telescopic shaft 40 401 tightly, the positioning groove 401 of the clipping block 21 clip telescopic shafts 40 of positioning component 20 makes the telescopic shaft 40 can not free upper and lower displacement, and with telescopic shaft 40 location, behind telescopic shaft 40 location, can not move down;

This screwed pipe 42 can be in response to various bicycle sizes, and bulge loop 421 is arranged at screwed pipe 42 bottoms simultaneously, can keep screwed pipe 42 centers, and increase telescopic shaft 40 stability when flexible;

The clipping block 21 by positioning component 20 is not only in the location of the utility model telescopic shaft 40, but be bolted in screwed pipe 42 by screw rod 41, the downforce of support handle 51, the clipping block 21 of this positioning component 20 is that control telescopic shaft 40 is scalable not, so even mistake pulls open eccentric handle 32, this telescopic shaft 40 and handle 51 are can not descend or unclamp, and still can drive bicycle safely;

The very convenient handle 51 that adjusts of the utility model is to desired height, can differ in response to human body height, and in response to everyone height, pushing, the person's of riding strain is at any time made sitting posture or the appearance of lying prone, to adjust posture, make the condition of the most comfortable, and the utility model is quick adjusting and quick position fixing knob 51, even in travelling, still can operate, are convenient means for players, do not waste its fixture, and this case makes to dwindle or enlarge clasp 31 with eccentric handle 32, shorten the operating time, quicker, safely and reliably.

Claims

1. A bicycle steering shaft telescopic structure, which has a main shaft tube and a handle connecting pipe above the front fork of the bicycle, characterized in that: the steering shaft telescopic structure is erected on the main shaft tube, and the steering shaft telescopic structure Contains:

A positioning component and a pressing component, the positioning component and the pressing component are positioned on the top of the main shaft tube, the pressing component is a buckle, the buckle can quickly reduce or expand the inner diameter of the buckle, and the buckle pushes the positioning component, and a screw is positioned in the main shaft tube Tube;

A screw, the screw is screwed into the spiral tube, and there is a rotating head at the top of the screw;

A telescopic shaft, the screw rod is located in the telescopic shaft, and the screw rod and the telescopic shaft are pivotally connected, and the screw rod and the telescopic shaft penetrate into the main shaft tube, the telescopic shaft is provided with a positioning groove, and the positioning component is inserted into the positioning groove, and the telescopic shaft is in one position Connect the handle to take over.

2. The telescopic structure of the bicycle steering shaft according to claim 1, characterized in that: the positioning groove of the telescopic shaft is arranged on the surface of the telescopic shaft, which is arranged in the axial direction, and one end of the positioning component is a locking block, and the locking block into the positioning groove, and the surface of the other end is threaded to combine with a nut.

3. The telescoping structure of the bicycle steering shaft according to claim 1, characterized in that: the buckle of the pressing component has an opening, and an eccentric handle that can reduce or expand the inner diameter of the buckle is pivotally connected to the opening.

4. The telescoping structure of the bicycle steering shaft according to claim 1, wherein a screw hole is provided at the radial position of the buckle for the positioning assembly to pass through.

5. The telescoping structure of the bicycle steering shaft according to claim 1, characterized in that: the bottom of the spiral tube is provided with a protruding ring, the spindle tube is provided with an inner ring, and the protruding ring is fixed on the inner ring.