CN2443910Y

CN2443910Y - Locking mechanism for bicycle head bowl group

Info

Publication number: CN2443910Y
Application number: CN 00244058
Authority: CN
Inventors: 李木荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-04
Filing date: 2000-08-04
Publication date: 2001-08-22
Anticipated expiration: 2010-08-04

Abstract

The utility model relates to a locking mechanism for bicycle head bowl group, mainly including a front fork standpipe fixed on the handlebar tube and an upper bulb stopper, a fixing seat, a hand lever and a tightening device which are arranged on the upper end of the front fork standpipe in order. The tightening device mainly comprises a location base, tightening blocks and a casing cover, the location base as a hollow cylinder is provided with opening conduit channels around its surface, the tightening blocks whose peripheral surface is a pyramidal face is fixed on and matches with a hollow perforating hole of the location base, and a screw is arranged in the center of the tightening block, a screw rod is arranged at the bottom of the casing cover and can be spirally combined into the screw of the tightening block, and a driving hole is arranged on the upper end of the casting cover. Utilizing the spanner to screw the casing cover can make the tightening block upwards embed in the location base and enable the location base to push off and accomplish the buckled fixing.

Description

Bicycle headstock bowl group locked mechanism

The utility model relates to a kind of headstock bowl group locked mechanism of bicycle.

Figure 1 shows that existing headstock bowl group locked mechanism, smooth surface is made in the periphery, top of its standpipe of front fork 1, inside, top is provided with screw 1a and is pressed into a pressing block 2, the top of pressing block 2 is provided with outward extending flange 2a and is compressed on the top end face of sleeve pipe 3, the bottom face of sleeve pipe 3 is compressed on again on the collar 4 that has breach 4a, the side face 4b of the collar 4 is pushing and drawing shape, the inside of last bulb stopper 5 also is provided with wide at the top and narrow at the bottom pushing away and pulls out hole 5a and make this collar 4 be set in to push away and pull out among the 5a of hole, and its side face 4b just pulls out hole 5a and fits with pushing away.Utilize pressing block 2 to be locked among the screw 1a and when utilizing flange 2a that sleeve pipe 3 and the collar 4 produced press powers, the collar 4 will more be inserted in towards pushing away to pull out among the 5a of hole by crowded the pushing away of axial force, and the width of breach 4a and the internal diameter of the collar 4 are diminished, make the inner peripheral surface of the collar 4 produce the effect of tightening standpipe of front fork 1.

Though the locked mechanism of said structure can produce the effect of tightening to standpipe of front fork 1, but in the cycling process, because vibrations or stress, the thread segment and the standpipe of front fork 1 screw 1a that are locked on the pressing block 2 among the screw 1a are easy to produce loosening, the collar 4 suffered press powers will reduce gradually, even completely lose, thereby cause the loosening of one-piece parts, even the disturbance of causing danger.

In view of this, the inventor is active development research, and the phase can be designed a kind of headstock bowl group locked mechanism of bicycle, so that it has more practicality.Yet Providence doesn't let down a man who does his best at long last, the inventor is based on being engaged in this series products manufacturing experience and long-term endeavour research and test for many years, finally development and Design goes out the utility model bicycle headstock bowl group locked mechanism, and can all customer and the industrial communitys in Jiahui.

The purpose of this utility model promptly is to provide a kind of simple in structure, bicycle headstock bowl group locked mechanism that locking is reliable and easy to use.

To achieve these goals, the utility model utilizes positioning seat, clamp holder and upper shield to constitute the Fastening device that is set in the standpipe of front fork top.Positioning seat is a hollow cylindrical body, is provided with open channel along side face; The clamp holder periphery is a conical surface shape, is set in the positioning seat and with the perforation of positioning seat hollow to work in coordination, and its central authorities are provided with screw; The upper shield bottom is provided with screw rod and can screws togather to the clamp holder screw, which is provided with drive hole.

For the Fastening device of said structure, when utilizing spanner to screw upper shield, clamp holder is risen buckle into positioning seat and positioning seat is strutted, reach the purpose of locking and make the anxiety of permanent seat non-loosening.

Be described in further detail below in conjunction with the technical characterictic of specific embodiment the utility model bicycle headstock bowl group locked mechanism.

Fig. 1 is the generalized section of the headstock bowl group locked mechanism of existing bicycle;

Fig. 2 is the decomposition texture scheme drawing of the utility model bicycle headstock bowl group locked mechanism;

Fig. 3 is the combination scheme drawing of the utility model bicycle headstock bowl group locked mechanism;

Generalized section when Fig. 4 is the locking of the utility model bicycle headstock bowl group locked mechanism;

Fig. 5 is the action scheme drawing of the utility model bicycle headstock bowl group locked mechanism.

With reference to shown in Figure 2, the utility model bicycle headstock bowl group locked mechanism mainly comprises last bulb stopper 50, permanent seat 60, driver's bar 70 and the Fastening device 80 that is located in vehicle head tube 10 in-to-in standpipe of front fork 20 and is set in standpipe of front fork 20 tops successively.

Vehicle head tube 10, standpipe of front fork 20, members such as last bulb stopper 50, permanent seat 60 and driver's bar 70 are all prior art, and its thin bilge construction repeats no more.

Urgent device 80 comprises positioning seat 81, clamp holder 82 and upper shield 83.Positioning seat 81 is provided with open channel 812 for having the cylinder of hollow perforation along its side face.Urgent 82 outer peripheral face 821 is the conical surface, is set in the hollow perforation of positioning seat 81 and with the hollow perforation to work in coordination, and its central authorities are provided with screw 822.Upper shield 83 bottoms are provided with screw rod 831 and can screw togather to the screw 822 of clamp holder 82, and upper shield 83 is provided with drive hole 832 (being hex hole in the present embodiment).So be the integral structure of the utility model bicycle headstock bowl group locked mechanism, and as shown in Figure 3.

With reference to shown in Figure 4, the utility model in use, can directly utilize a hex spanner 90 to buckle in the drive hole 832 of upper shield 83, when screwing upper shield 83, clamp holder 82 is risen (as shown in Figure 5), so can buckle into positioning seat 81 and positioning seat is strutted, reach the effect of locking and make the anxiety of permanent seat 60 non-loosenings.

When the utility model uses, only need utilize spanner to rotate upper shield 83, can realize snap close easily, it is quite convenient to use.

By above-described locking mechanism for bicycle head bowl group as can be known, the utility model in use can be complete Entirely overcome the defective of existing locked mechanism, have suitable practicality and industrial utilization.

1, the utility model simple structure, it is quite convenient to use;

2, the utility model has only been made slightly moving the change in the structure aspects of member, but and manufacturing cost phase To reducing.

In a word, the utility model locking mechanism for bicycle head bowl group is at structural design, practicality and cost The benefit aspects, it is required really to meet industry development fully, is to propose patent application in accordance with the law, earnestly asks an ancient unit of weight office Early examination and approval.

Claims

1, a kind of bicycle headstock bowl group locked mechanism, comprise standpipe of front fork that is located in the vehicle head tube and last bulb stopper, permanent seat, driver's bar and the Fastening device that is set in the standpipe of front fork top successively, of the present utility modelly be characterised in that described Fastening device comprises positioning seat, clamp holder and upper shield; Described positioning seat is the cylinder with hollow perforation, is provided with the conduit of opening along its side face; The periphery of described clamp holder is the conical surface, is set in the perforation of positioning seat hollow and with the hollow perforation to work in coordination, and its central authorities are provided with screw; Described upper shield bottom is provided with screw rod and can screws togather to the clamp holder screw, which is provided with drive hole.