CN2501791Y

CN2501791Y - Easy-to-assembly high stability central-axis device for bicycle

Info

Publication number: CN2501791Y
Application number: CN 01201638
Authority: CN
Inventors: 纪易成
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-20
Filing date: 2001-01-20
Publication date: 2002-07-24
Anticipated expiration: 2011-01-20

Abstract

The utility model relates to an easy-to-assembly high stability central-axis device for a bicycle. A central axis pipe is spirally arranged in a five-way pipe; one end of the central axis pipe is sheaA medial axis device of bicycle is easy assembled and has high stability, which is arranged a medial axis tube screw in a five-way pipe, one end of the medial axis tube is sleeved with a ball bearing,thed with a roller bearing; a central axis is penetrated and fixed in the roller bearing. The central axis is sheathed with one roller bearing on the internal side near a toothed disk; a backing ring a medial axis is fixedly arranged in the ball bearing; the medial of the medial axis closed to a tooth disk is sleeved with a bal bearing, a ring gasket is sleeved between the ball bearing and the meis sheathed between the roller bearing and the central axis pipe, and the external side of the roller bearing is buckled and positioned with a buckle in the shape of C. The assembly of the utility moddial axis tube, and a C-shaped button is used for location at the lateral of the ball bearing. The utility model is assembled simply and disassembled and replaced components easily, the whole body hasel is very simply; the disassembly and the replacement of the components are easy, and the integration of the easy-to-assembly high stability central-axis device for a bicycle has favorable rotating s perfect rotary stability and trampling force strength. table degree and tread stress strength.

Description

Easily assemble the also bicycle middle shaft device of tool high stability

The utility model is about a kind of bicycle middle shaft device.

The middle axle construction of Regular Bicycle is that group is provided with an axis group in the five-way pipe that is welded with down pipe, seat pipe and back breeches pipe, and can supply the smooth and easy rotating function of trampling of rider; Please cooperate and consult shown in Figure 4ly, be the combination section for axle construction in commonly using, and the axis group of commonly using 40 is with behind a mandrel 41 devices one body 42, again in its each ball bearing of main shaft 43 of both sides installing, and after it was installed on five-way pipe 50, each was solid with a volution 44 spiral shells in both sides, can trample rotation for smooth and easy; Yet this kind directly is installed in ball bearing of main shaft 43 mode on the mandrel 41, and not only assembly is slow, influence the single-piece efficiency of assembling, and to revolve lock not tight because of the single-piece precision problem most probably, causes the problem of becoming flexible on the structure; Moreover, because of the crank end of tool fluted disc is a transmission side for power, and less because of the area of contact of ball bearing of main shaft, only be point-like contact, and because of rider's foot pedal force bigger in this side application of force, if after using a period of time, the ball bearing of main shaft of this side is destroyed easily, diagonal distortion or the relatively poor phenomenon of slow-roll stabilization degree when trampling is arranged, and integral body can bear that to trample intensity of force relatively poor, so, according to above-mentioned disadvantages, have in fact axle construction in commonly using is made the further essentiality of improvement.

The purpose of this utility model is the bicycle middle shaft device that is to provide a kind of easy assembling and tool high stability, can be for the simple and easy assembling of ball bearing of main shaft location, and the splendid slow-roll stabilization degree of tool and trample and be subjected to force intensity when integral body is trampled.

In order to achieve the above object, the utility model provides the bicycle middle shaft device of a kind of easy assembling and tool high stability, it is characterized in that: it comprises a five-way pipe and a central siphon, be located on the negative thread of five-way pipe with the outside thread spiral shell of central siphon one end, the sheathed ball bearing of main shaft of this central siphon other end, this ball bearing of main shaft outside is set with the outside thread spiral shell of a packing ring and is positioned on the negative thread of five-way pipe, is fixed in the ball bearing of main shaft and wear with an axis;

Inboard near fluted disc on this axis is arranged with a cylindrical bearing, a sheathed again grommet between this cylindrical bearing and central siphon, and outside cylindrical bearing, set the position with C shape button button.

The bicycle middle shaft device of described easy assembling and tool high stability is characterized in that: an end of the sheathed ball bearing of main shaft of this central siphon can be provided with one for the nested fixing location terrace edge of this ball bearing of main shaft.

The utlity model has following advantage in sum:

1, the effect of the simple and easy assembling of tool location: be provided with a location terrace edge in addition because the central siphon spiral shell is established the opposite end, so can be for the simple and easy assembling of ball bearing of main shaft location.

2, the splendid slow-roll stabilization degree of tool and trample and be subjected to force intensity: the crank end of tool fluted disc is to be arranged with the cylindrical bearing installing of a grommet, and anchor the position with a C shape, and because of the crank end of tool fluted disc be to be the power transmission side, and rider's foot pedal force is bigger in this side, because the area of contact of the utility model cylindrical bearing is bigger, be planar contact, be subjected to force intensity so can make this side have bigger trampling, and the splendid slow-roll stabilization degree of tool when integral body is trampled makes prolong the service life of bearing.

For further understanding to the utility model, below lift a preferred embodiment now, and cooperate graphic, figure number, constitution content of the present utility model and the effect reached thereof are described in detail as the back:

Brief description of drawings:

Fig. 1 is overall appearance three-dimensional combination figure of the present utility model.

Fig. 2 A is three-dimensional exploded view of the present utility model.

Fig. 2 B is the partial enlarged drawing of Fig. 2 A.

Fig. 3 A is combination section of the present utility model.

Fig. 3 B is the partial enlarged drawing of Fig. 3 A.

Fig. 4 is for commonly using the combination generalized section of structure.

Please cooperate and consult shown in Fig. 1 and Fig. 2 A, Fig. 2 B, bicycle middle shaft device of the present utility model is installing one axis group 20 in five-way pipe 10, and can tramples rotation for the rider is smooth and easy.

Five-way pipe 10 is hollow tube, and inner both sides are provided with the promising negative thread 11 of setting the position for spiral shell.

Axis group 20, comprise a central siphon 21, be located on the negative thread 11 of five-way pipe 10 with outside thread 211 spiral shells of central siphon 21 1 ends, the sheathed ball bearing of main shaft 22 of these central siphon 21 other ends (being relative fluted disc 31 ends), ball bearing of main shaft 22 outsides are set with the tight spiral shells of outside thread 231 of a packing ring 23 and are positioned on the negative thread 11 of five-way pipe 10, are fixed in the ball bearing of main shaft 22 and wear with an axis 24.

Wherein, it should be noted that, bicycle middle shaft device of the present utility model, central siphon 21 outside threads 211 relative fluted disc 31 ends in axis group 20 are provided with a location terrace edge 212, and can be nested fixing for ball bearing of main shaft 22, and the inboard near fluted disc 31 on axis 24 is to be arranged with a cylindrical bearing 25, a sheathed again grommet 26 between cylindrical bearing 25 and central siphon 21, and set the position with C shape button 27 buttons in cylindrical bearing 25 outsides, and the splendid slow-roll stabilization degree (please cooperate and consult shown in Fig. 3 A, Fig. 3 B) of tool when integral body is trampled.

Please continue to cooperate and consult shown in Fig. 3 A, Fig. 3 B, be to be combination section of the present utility model, because the central siphon 21 of this axis group 20 is provided with a location terrace edge 212 in addition, and can be with ball bearing of main shaft 23 simple and easy assembling location thereon; Moreover, inboard near fluted disc 31 on axis 24 is to be arranged with a cylindrical bearing 25, be arranged with a grommet 26 on the cylindrical bearing 25 again, to commonly use ball bearing of main shaft big because of the area of contact of this cylindrical bearing 25, so can make the rider when trampling, have splendid rotation contact stabilization degree and preferable trampling and be subjected to force intensity.

In sum, the utility model is the bicycle middle shaft device of assembling and tool high stability easily, and combine and assemble is very easy, and the dismounting and change assembly easily and the splendid slow-roll stabilization degree of the whole tool after the assembling and trample and be subjected to force intensity, dark tool practicality.

Claims

1, the bicycle middle shaft device of a kind of easy assembling and tool high stability, it is characterized in that: it comprises a five-way pipe and a central siphon, be located on the negative thread of five-way pipe with the outside thread spiral shell of central siphon one end, the sheathed ball bearing of main shaft of this central siphon other end, this ball bearing of main shaft outside is set with the outside thread spiral shell of a packing ring and is positioned on the negative thread of five-way pipe, is fixed in the ball bearing of main shaft and wear with an axis;

2, the bicycle middle shaft device of easy assembling according to claim 1 and tool high stability is characterized in that: an end of the sheathed ball bearing of main shaft of this central siphon is provided with one for the nested fixing location terrace edge of this ball bearing of main shaft.