CN2174408Y - Improved structure for handle-bar stem of bicycle - Google Patents

Abstract

The utility model relates to an improved structure for handle-bar stem of bicycle, comprising a pipe casting which is forged with aluminium alloy through an integral bent forming; The front end comprises a coupling body, and a tension adjusting screw bolt is limited in the front end of the main connection pipe; the screwing and pulling screw nut of the steel strip is locked, and the steel bars with both ends are respectively fixedly connected to the screwing and pulling screw nut of the steel strip and on the tail end locked screw bolt; the double-ended pulling and placing state is formed, and the steel bar strip is forced to pull at the tail end locked screw bolt through the locking of the tension adjusting screw bolt; the tension directly makes the slanting clamping head generate slanting offset actions, and the slanting clamping head which is positioned in the faucet pipe generate the effects of external lock and internal fixing.

Description

Improved structure for handle-bar stem of bicycle

The utility model relates to the structure-improved that a kind of bicycle jociey stick master takes over body, refers to that especially a kind of jociey stick master of sport car takes over the structure-improved of body.

For the short distance road, bicycle is a walking-replacing tool the most easily, and one comes can not cause aerial contamination; Two can reach the purpose of having a rest and moving, so bicycle can not have the trend of more and more popularizing on the contrary because of industrial high development is eliminated.Therefore, alleviate car body weight, improve intensity and improve the main construction that structure design is bicycle trade research.Car owner voluntarily in the past takes over body and is the two sectional type structure, as shown in Figure 1; Main adapter (A1) and mobile jib partly (A2) are the keystone configuration that engages with faucet.This structure is to utilize oblique holding head (A3) to cause the pulling force deflection, make this oblique holding head (A3) firmly fastening in faucet, sectional structure chart by Fig. 1 can obviously be learnt, this oblique holding head (A3) and mobile jib part (A2) be connected be by a large and long bolt (A4) from mobile jib partly (A2) run through and descend, lock reaches in oblique holding head (A3), this mobile jib (A2) termination then produces an open hole (A21), becomes main (A1) maximum drawback------dead angle of taking over; One, water can be opened hole (A21) thus and infiltrate, pipe and main the adapter and the bolt corrosion phenomenon in causing; Two, this position, dead angle is often over against the speed change position of sport car knight face voluntarily, in case bump, danger increases thereupon; Shortcoming place when this uses for it.

Secondly, this used main (A1) structure of taking over does not play effect to the weight that alleviates bicycle, and the weight of large and long double-screw bolt (A4) adds the weight of the hoop body bolt (A5) of front end, often surpasses the weight that the alloy master takes over (1).

As for strength problem, except that material for to influence the principal element of intensity, the intensity of two sectional type structure is inevitable less than integrated structure, and also safer on the latter's the external form.

On manufacturing issue, because main take over (A1) in the past needs upward to bore a screw at mobile jib (A2), the accuracy rate of its position directly influences the departure distance of the oblique holding head (A3) of its below.Therefore usefulness main taken over (A1) no matter on making, on the intensity, dismounting, assembling and use undesirable part is all arranged in the past.

Therefore, main purpose of the present utility model provides the structure-improved that a kind of integrated bicycle jociey stick master takes over body, and this main joint pipe structure is except that strengthening the intensity, also get rid of the defective with dead angle and open hole.Another purpose of the present utility model provides the structure-improved that a kind of safe in utilization and lighter bicycle jociey stick master of weight easy to assembly takes over body.

Purpose of the present invention can reach by following measure: making the structure-improved that a kind of bicycle jociey stick master takes over body, mainly is to be revolved by reflective headkerchief, a positioning bolt, a steel band before the adapter, to draw nut, a steel bar band, an oblique holding head, tail end lock to put elements such as bolt and nut and constituted, it is characterized in that:

Described main adapter is the global formation pipe fitting by aluminum alloy forged one-tenth, it is a hollow curved arc body, front end comprises a locking hoop body, hoop body is offered a longitudinal cut in order to hoop lock jociey stick, draw bolt to be locked on steel band with accent in it and revolve and draw nut, and revolve with steel band and to draw nut to be engaged in an end of steel bar band; The other end of steel bar band then is engaged in the tail end lock and puts on the bolt, and is locked on outside the oblique holding head with a nut, makes steel band form the structure of two tractive restriction.Draw the sealed of bolt by accent, make the steel bar band produce pulling force, make oblique holding head produce skew simultaneously, and with locking clip body banding.Preceding reflecting cover head is covered on main the adapter in the front end, in order to seal the main port of taking over.Accent draws bolt to place in the slotted eye of main adapter front end, forms restriction state, and its rear end and steel band revolve and draw nut to be spirally connected, revolve at steel band and to draw the nut tail end that the line of rabbet joint and fixing lockhole are set, and insert fixedly lockhole by lock body, the steel bar band is fixed in steel band revolves and draw on the nut formation drawing structure.Tail end lock is put bolt and the line of rabbet joint is set and runs through lockhole in its end, and makes this tail end lock put bolt by lock body to be connected with steel band, this bolt then pass oblique holding head and nut sealed, the acting point of formation pulling force.The outer rim of oblique holding head is surrounded by one deck rubber cushion, in order to anti-skidding and more firm joint.Hoop unification jociey stick in the main locking hoop body of taking over, this body of rod is to make entity structure with forging method in the locked portions of central authorities, both sides then are hollow tube.

Cooperate the diagram of the utility model preferred embodiment to carry out comparatively detailed explanation below:

Fig. 1 is that bicycle jociey stick master took over the sectional structure scheme drawing of body in the past;

Fig. 2 is the stereoscopic scheme drawing that the utility model master takes over body and jociey stick combination;

Fig. 3 is the decomposition of each element of the utility model and the sectional structure scheme drawing of jociey stick;

Fig. 4 is the utility model integral member sectional structure and action scheme drawing.

See also shown in Fig. 2,3, the utility model mainly draws bolt (3) by main adapter (1), preceding reflective headkerchief (2), accent, steel band revolves and draws nut (4), steel bar band (5), and bolt (7) put by oblique holding head (6), tail end lock and nut elements such as (8) constitutes.Wherein main adapter body is one-body molded made by the reflectal pipe, it is shaped as the curved body of hollow, front end comprises a locking hoop body (11), this hoop body (11) is by the nargin of vertical grooving (12) control locking, so that jociey stick (9) penetrates, and draw bolt (3) to lock by accent and draw the steel bar band (5) in main the adapter and make the sealed banding of jociey stick (9) simultaneously.

See also the jociey stick cutaway view shown in Fig. 3 below, this jociey stick (9) is for fear of causing the fashionable distortion of hoop and obtaining the higher sealed stress of anti-hoop, be not to be general hollow tube, this new construction is that what to adopt that the forging mode makes is entity structure in central locked portions (91), and two still is hollow tube.Reflective headkerchief (2) seals main (1) port of taking over before main adapter (1) front port holding one, have in the front port to transfer and draw the solid slotted eye (13) of bolt, make and transfer in the port that draws bolt (3) can be limited to main adapter (1), steel band revolves and draws nut (4) then to place main the adapter in (1), draws bolt (3) to be spirally connected with accent.This steel band revolves and draws nut (4) tail side to offer a line of rabbet joint (41), line of rabbet joint outer rim has the pin-and-hole of running through (42), steel bar band (5) front end then is inserted in the line of rabbet joint (41), penetrate by a set pin (10), insert simultaneously in the lockhole (51) of steel bar band (5), make steel bar band (5) one ends be fixed in steel band and revolve and draw on the nut (4).The other end at steel bar band (5) has a pin-and-hole (52) too, this end is inserted in the tail end lock and puts in bolt (7) the end line of rabbet joint (71), making steel bar band (5) be fixed in the tail end lock with a set pin (10) equally puts on the bolt (7), make steel bar band (5) have the structure of two ends engaging, in order to spur oblique holding head (6).See also shown in Figure 4 again, this tail end lock is put bolt (7) and is passed oblique holding head (6) and engage with steel bar band (5), and be locked together in the outside of holding head (6) by a nut (8), the tail end lock is put bolt (7) and is locked to the acting point that becomes steel bar band (5) pulling force in the appropriate location by nut (8), promptly the accent by front end draws bolt (3) to revolve lock, force its interior steel band to revolve and draw nut (4) displacement forward, this displacement is except that steel bar band (5) is produced the pulling force, also make locking hoop body (11) banding simultaneously, reached dual usefulness.

Because main take over (1) is engaged in the action that faucet (100) is implemented for interior pipe, must make oblique holding head (6) produce oblique out-of-position protuberance, just can block faucet (100) location.For making its holding can be more definite, and do not cause holding head (6) to produce rigid the contact, be provided with a rubber cushion (61), so that play on-slip and more firm snap action during its contact with oblique holding head (6) contact surface with faucet (100) inwall.

In sum, the utility model also has the premium properties of multiple actual use, manufacturing and intensity enhancing aspect except that possessing one-body molded and having the main effect of clamping faucet.

Claims (6)

1, the utility model is the structure-improved that a kind of bicycle jociey stick master takes over body, it mainly is to be revolved by reflective headkerchief, a positioning bolt, a steel band before the adapter, to draw nut, a steel bar band, an oblique holding head, tail end lock to put elements such as bolt and nut and constituted, and it is characterized in that:

Described main adapter is the global formation pipe fitting by aluminum alloy forged one-tenth, it is a hollow curved arc body, and front end comprises a locking hoop body, and hoop body is offered a longitudinal cut with hoop lock jociey stick, draw bolt to be locked on steel band with accent in it and revolve and draw nut, and revolve with steel band and to draw nut to be engaged in an end of steel bar band; The other end of steel bar band then is engaged in the tail end lock and puts on the bolt, and is locked on outside the oblique holding head with a nut, makes the steel bar band form the structure of two tractive restriction, draws the sealed of bolt by accent, and with locking clip body banding.

2, a kind of bicycle jociey stick master according to claim 1 takes over the structure-improved of body, it is characterized in that: the reflecting cover head is covered on main the adapter in the front end before described, in order to seal the main port of taking over.

3, a kind of bicycle jociey stick master according to claim 1 takes over the structure-improved of body, it is characterized in that: described accent draws bolt to place in the slotted eye of main adapter front end, form restriction state, its rear end and steel band revolve and draw nut to be spirally connected, revolve at steel band and to draw the nut tail end that the line of rabbet joint and fixed pin holes are set, and insert fixedly lockhole by lock body, the steel bar band is fixed in steel band revolves and draw on the nut formation drawing structure.

4, a kind of bicycle jociey stick master according to claim 1 takes over the structure-improved of body, it is characterized in that: described tail end lock is put bolt and the line of rabbet joint is set in the end and runs through lockhole, and make this tail end lock put bolt by lock body to be connected with the steel bar band, this bolt then pass oblique holding head and nut sealed, form the acting point of pulling force.

5, a kind of bicycle jociey stick master according to claim 1 takes over the structure-improved of body, and it is characterized in that: the outer rim of described oblique holding head is surrounded by one deck rubber cushion, in order to anti-skidding and more firm joint.

6, a kind of bicycle jociey stick master according to claim 1 takes over the structure-improved of body, it is characterized in that: hoop unification jociey stick in the described main locking hoop body of taking over, this body of rod is to make entity structure with forging method in the locked portions of central authorities, and both sides then are hollow tube.

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