CN2184642Y - Structure-improved bicycle plug-in hub - Google Patents

Abstract

The utility model relates to a bicycle plug-in hub with an improved structure. A plum blossom groove having an oblique conical surface is arranged at the lateral side of the main body of the hub; the groove part of an inner shell is of a bulging shape; the main body of the hub and the inner shell are respectively combined with the methods of concave matching and convex matching, and the strength is increased; a wave-shaped pad used for causing a fixing screw bolt to have little possibility of looseness is arranged between the fixing screw bolt and the inner shell.

Description

Structure-improved bicycle plug-in hub

The utility model relates to a kind of structure improved bicycle cassette flower hub.

In the existing colored hub structure, flower hub body is to combine in protruding, recessed mode respectively with cooperation between inner casing, makes the plum blossom seat that protrudes from colored hub body be subject to cut off, and need higher precision in assembly; And bolt of rear end plate does not have the locking of good location structure, so it is become flexible by vibrations easily, and the utility model promptly is to improve existing colored hub structure at this all shortcoming, makes the colored hub in the use can be more good.

Flower hub head (HUB NABE) is a transmission device of being located at cycle wheel central authorities, make the wheel running by the chain driven gear, so this mechanism design is whether good, it is a big key point for the bicycle quality, please referring to shown in Figure 3, it is the constructional drawing of existing flower hub, mainly be by a variable gear dish 60, pearl bowl 61, Location guide 62, shell 70, inner casing 80, flower hub body 90, bolt of rear end plate 92 reaches to be correlated with and constitutes in conjunction with part, wherein spend hub body 90 central authorities to be equipped with bolt of rear end plate 92, the body of rod of this bolt of rear end plate 92 is to stretch out colored hub body 90 outer ends, is provided with the plum blossom seat 91 of protrusion again at the sidepiece of bolt of rear end plate 92 external parts of spending hub body 90; The inner casing 80 that other establishes a tool center through hole 83 is at one end to establish threaded portion 81; End then is provided with grooving 82 in addition, this inner casing 80 is matched with on the plum blossom seat 91 with grooving 82, and cooperate a shell 70 to be sheathed on inner casing 80 outsides, establishing the pearl bowl 61 of a location guide rod 62 and a tool negative thread more respectively is located in the through hole of shell 71, and screw togather respectively with inner casing 80, cooperate parts such as relevant ball and pad to do combination again, and inside and outside shell and flower hub body are combined into one.

Existing design has all following shortcoming in practicality:

1, because flower hub body side is provided with the plum blossom seat of protrusion, and is the vertical surface of 90 degree between plum blossom seat and flower hub body,, the stressed situation of breaking or cutting off arranged when being existing plum blossom seat so its torsion that can bear is limited.

2, in addition when bolt of rear end plate lock, do to paste and support because of only being provided with pad, then easily make pad lose effectiveness when stressed greatly the time, and when being shaken, bolt become flexible easily, is its another shortcoming again.

Main purpose of the present utility model is: a kind of structure improved bicycle cassette flower hub is provided, will spends hub body one side to be provided with the plum blossom seat, form salient relatively at inner casing in addition, this concave, convex is cooperated can reach preferable bond strength and steadiness.

Another purpose of the present utility model is: a kind of structure improved bicycle cassette flower hub is provided, between flower hub body and inner casing, form directly and contact with the awl inclined-plane, make it compel to close more convenient and the intensity increase, between bolt of rear end plate and inner casing, establish a corrugated gasket again so that bolt of rear end plate is difficult for loosening.

A purpose more of the present utility model is: a kind of structure improved bicycle cassette flower hub is provided, inner casing held in addition be formed with polygonal square groove, can insert fixedly inner casing, make bolt of rear end plate be easy to demolition, installation then for instrument, and comparatively convenient in the use.

The utility model provides a kind of structure improved bicycle cassette flower hub, comprise colored hub body, bolt of rear end plate, inner casing, shell, the beautiful signature and correlated parts, this flower hub body is provided with croze in central authorities and is passed respectively with inner casing and beautiful the signature by a side for bolt of rear end plate and join, and it is characterized in that:

Flower hub body one side is provided with recessed plum blossom groove, and inner casing is forced in the plum blossom groove with the end of protruding, and the bulge loop wall that the inner casing outside is formed offsets to overlap with plum blossom notch end face and cooperates.

The bicycle cassette flower hub of aforementioned structure improvement is characterized in that: be formed with tapering relatively to cooperate in the bulge loop wall outside of inner casing and the notch profile of plum blossom groove.

The bicycle cassette flower hub of aforementioned structure improvement is characterized in that: be provided with a corrugated gasket between the bottom land of plum blossom groove and inner casing end.

The bicycle cassette flower hub of aforementioned structure improvement, it is characterized in that: the bolt cap of bolt of rear end plate and the croze place of offseting establish a pad again.

The bicycle cassette of aforementioned structure improvement is spent hub, it is characterized in that: inner casing is provided with for instrument in all sides of central screw of giving as security the end that joins by jade and stretches into fixing polygonal square groove.

The utlity model has following advantage:

1, because the utility model is spending hub body one side to form the plum blossom groove, and inner casing then forms convex shape relatively, the cooperation of this concave, convex can obtain preferable intensity and cooperate, and improves the shortcoming that existing plum blossom seat can be cut off.

2, because the utility model forms engaging of inclined-plane at the colored groove of flower hub body with the inner casing contact jaw, thus only can make it assemble very facility with the contact design on an inclined-plane, and can reduce the radial beat etc. of combination.

3, because the utility model forms the inclined-plane in plum blossom notch end, make the wall thickness at this place even, and make it difficultly produce situation such as break because of bump because of being provided with the inclined-plane.

4, because the utility model is equipped with a corrugated gasket at the plum blossom groove end of inner casing and flower hub body, make bolt of rear end plate after locking, produce a precompressed effect, make in conjunction with more firmly durable, and can prevent the phenomenon that bolt of rear end plate is loosening because of vibrations produce.

5, because inner casing end of the present utility model is provided with polygonal square groove in all sides of center through hole, when desire is removed the bolt of rear end plate of each part of serial connection, jade give as security remove after, stretch with elongated tool and to do in the polygonal square groove, then turn bolt of rear end plate and do not make inner casing while turn smoothly.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a structure assembling section of the present utility model.

Fig. 2 is another example structure of the utility model figure.

Fig. 3 is existing colored hub structure exploded drawings.

Please referring to as shown in Figure 1; the utility model mainly is the colored hub body 10 that is provided with a central tool axle; these flower hub body 10 central authorities are provided with a croze 13; it is one stepped that this croze 13 forms in the end; just can pass from an end for bolt of rear end plate 32; this bolt of rear end plate 32 is stretched out with inner casing 20 to join; spiral shell is solid mutually and beautiful signature (cone) 50 is promptly with central axle; again the bolt cap of bolt of rear end plate 32 then just and this cascaded surface place offset; establish a pad 31 again at this bolt cap and 13 of crozes in addition; can prevent the loosening of bolt of rear end plate 32; and can protect the smooth and uniform-compression of croze 13 step-like surfaces; be provided with plum blossom groove 11 in flower hub body 10 1 sides in addition; this plum blossom groove 11 outwards forms an awl inclined-plane 12 in open end, and this awl inclined-plane 12 is greater than once, simultaneously because the increase of wall thickness has preferable intensity; all sides at plum blossom groove 11 are provided with oil sealing 33 again, and establish a corrugated gasket 30 in trench bottom.

Inner casing 20 is that to establish screw and bolt of rear end plate 32 spiral shells in central authorities solid, one protrusion end is then stretched in the plum blossom groove 11 and is butted on corrugated gasket 30 places, be provided with bulge loop wall 22 at inner casing 20 apart from above-mentioned end certain distance in addition, this bulge loop wall 22 is to form tapering 23 in external side end, this tapering 23 is just to match with the awl inclined-plane 12 of plum blossom groove 11 notch edge, side in addition at bulge loop wall 22 is provided with appearance pearl groove 24 again, cooperate shell 40 simultaneously respectively, beautiful signature 50, ball 41,42,43 and correlated parts finish combination (this array mode and structure be all same as the prior art, so locate and to give unnecessary details), shell 40 is formed articulate shapes, and can join with the Variable speed fluted disc (not shown) and finish a colored hub structure.

Giving as security 50 central screw week sides of joining end with jade and be provided with polygonal square groove 25 at inner casing 20 in addition, this polygonal square groove 25 is good with hexagon, when dismantling or being tightened bolt 32, instrument elongated or other given shapes such as polygonal ring-type is inserted in the polygonal square groove 25, then when turn bolt of rear end plate 32, can smoothly bolt of rear end plate 32 not unloaded or screw because of inner casing 20 can not rotate thereupon.

Referring to shown in Figure 2, be another embodiment of the utility model please, promptly establish recessed plum blossom groove 101 in flower hub body 100 1 sides, the notch week side of this plum blossom groove 101 is provided with a ring rib wall 102, then makes the 101 interior formation of plum blossom groove stepped; Inner casing 201 again, be at one end to form to protrude the end, be provided with a projecting ring section 202 apart from a distance, end at inner casing 201, between projecting ring section 202 and protruding end, also be formed with the awl inclined-plane 203 that can align concentricity, because this awl inclined-plane 203 aligns the center for easily making inner casing 201, this projecting ring section 202 is to paste the planar wall be butted on 102 on the plum blossom groove 101 notches outside and rib wall in the plane of sidepiece, also can get a good cooperation.

Claims (5)

1, a kind of structure improved bicycle cassette flower hub, comprise colored hub body, bolt of rear end plate, inner casing, shell, the beautiful signature and correlated parts, this flower hub body is provided with croze in central authorities and is passed respectively with inner casing and beautiful the signature by a side for bolt of rear end plate and join, and it is characterized in that:

Flower hub body one side is provided with recessed plum blossom groove, and inner casing is forced in the plum blossom groove with the end of protruding, and the bulge loop wall that the inner casing outside forms offsets to overlap with plum blossom notch end face and cooperates.

2, structure improved bicycle cassette flower hub according to claim 1 is characterized in that: be formed with taper fitting relatively in the bulge loop wall outside of inner casing and the notched outer ring of plum blossom groove.

3, structure improved bicycle cassette flower hub according to claim 1 is characterized in that: be provided with a corrugated gasket between the bottom land of plum blossom groove and inner casing end.

4, structure improved bicycle cassette flower hub according to claim 3, it is characterized in that: the bolt cap of bolt of rear end plate and the croze place of offseting establish a pad again.

5, structure improved bicycle cassette according to claim 1 is spent hub, it is characterized in that: inner casing is provided with for instrument in all sides of central screw of giving as security the end that joins by jade and stretches into fixing polygonal square groove.

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