CN2269486Y

CN2269486Y - Fastening combined structure

Info

Publication number: CN2269486Y
Application number: CN 96209280
Authority: CN
Inventors: 温宜纯
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-13
Filing date: 1996-05-13
Publication date: 1997-12-03
Anticipated expiration: 2006-05-13

Abstract

The utility model relates to a fastening combined structure which is a body with a C-shaped sheathing hole. Both ends of the body respectively form a dummy club with a locking hole, and therefore, the sheathing hole can be sheathed at a bicycle pipe piece. The utility model is characterized in that the inner edges of the two dummy clubs respectively form an inclined plane, and the two inclined planes can be in a form of enlarging toward the body center; a press tightening block is arranged between the two dummy clubs; both sides of the press tightening block are provided with matching inclined planes matched with the inclined plane. One end of the press tightening block forms an extending part with slots, and therefore, the press tightening block can make up for the larger gap between the two dummy clubs of the body. Consequently, the fastening combined ring body can be molded in the best extruding manufacturing way and have the best strength structure.

Description

Restraint young composite structure

The utility model relates to the bicycle technical field of fastening.

The young structure of known bundle (as shown in Figure 6), it is one to have the beam ring body 20 of C shape trepanning 200, these body 20 two ends respectively form a projection and are corresponding lug 21, and respectively are provided with a lockhole 22 on each lug 21, make its lockhole 22 can supply locking bolt 23; During this kind textural association, can be sheathed on the pipe fitting of bicycle with trepanning 200 earlier, and in lockhole 22 locking bolts 23 of lug 21, by bolt 23 compel close, and then make two lugs 21 close mutually, and make trepanning 200 dwindle internal diameter, and reach the effect that is locked in pipe fitting; This kind structure only is the form that has C shape trepanning merely, there is no any Jie and puts the structural design that remedies, so it can produce following deficiency during fabrication:

1, the one manufacture, for making its trepanning 200 have preferable out of roughness, its trepanning 200 is designed to the form of circle, the spacing that is its two lug 21 is less form, when it is made mould 30 is designed to the form shown in the 7th figure, again with the extruding the mode extrusion forming, joint 33 is less between its internal mold 31 and the external mold 32, the join strength deficiency, when extruding, can cause damage, carefully connect bar 34 so this structure appropriate location between internal mold 31 and external mold 32 is connected with, yet, because carefully connect the existence of bar 34, though aluminium can be connected into a complete C shape mutually by the back, its structure is destroyed, and still retaining has finedraw, so structural strength significantly lowers, cause structural strength not good, the deficiency that serviceability is low.

2, its two manufacture, for making mould 40 inside and outside

mould

41,42 joints 43 bigger, be that design makes the spacing of two lugs 21 be bigger form (as Fig. 7, shown in Figure 8), just need not establish between its inside and

outside mould

41,42 again and carefully connect bar this moment, directly extruding is promptly plastic, then again body 20 is done bending, this two lug 21 is leaned on mutually to the spacing as above-mentioned structure, yet, it is bent to minimum from two lugs 21 at a distance of maximum distance with body 20, variability is excessive, causes stress to concentrate and stress rupture, causes its structural strength to reduce.

The purpose of this utility model provides a kind of function of supplying that has, and can increase substantially the young structure of bundle of structural strength and packing effect.

The utility model is achieved in that in the inner edge of this two lug and respectively forms a plane of inclination, it is the form that enlarges that this two plane of inclination is towards the body center, and Jie puts a clamp holder between this two lug, these clamp holder both sides have the inclined-plane of joining that matches with above-mentioned plane of inclination, and this clamp holder one end formation one has the extension part of slotted hole, make this clamp holder can remedy body two lugs than large-spacing, so its beam ring body can be with the mode that the extrudes moulding of the best, and can have preferable structural strength.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model decomposing schematic representation

Fig. 2 is the utility model combination dissected figure

Fig. 3 is the utility model combination schematic appearance

Fig. 4 is the utility model shaping die schematic representation

Fig. 5 is the utility model moulding schematic flow sheet

Fig. 6 is the existing structure schematic representation

Fig. 7 is the shaping die schematic representation of existing structure

Fig. 8 is the shaping die schematic representation of another kind of existing structure

Fig. 9 is the moulding schematic flow sheet of another kind of existing structure

As shown in Figure 1, the utility model basic structure such as prior art, be mainly a beam ring body 10 with C shape trepanning 11, respectively establish a projection and be corresponding lug 12 in these body 10 two ends, and on each lug 12, establish a lockhole 13, and make body 10 that trepanning 11 be arranged, can be sheathed on bicycle pipe part, and in lockhole 13 locking bolts of lug 12, to be locked in pipe fitting; Characteristics of the present utility model are that the inner edge of two lugs 12 respectively forms a plane of inclination 120, this two plane of inclination 120 is towards body 10 centers for enlarging the form of shape, and Jie puts a clamp holder 14 between this two lug 12, this each tool one of clamp holder 14 both sides matches with above-mentioned plane of inclination 120 joins inclined-plane 140, and this clamp holder 14 1 ends formation one has the extension part 141 of slotted hole 142, in addition end is then established the face that urges 143 of circular arc, make this clamp holder 14 can remedy 10 liang of lugs 12 of body than large-spacing.

See Fig. 1, shown in Figure 4, when the utility model is made, as its two manufacture as described in the existing structure background note, in mould 50,

external mold

51,52 are designed to the form (as shown in Figure 4) of the big joint 53 of tool, two lugs 12 that are beam ring body 10 have the form of spacing greatly, and the mode moulding to extrude earlier, be provided with lockhole 13 in 12 processing of two lugs again, again body 10 is bent slightly, making its two lug 12 close non-slightly is hithermost state (as shown in Figure 5), again clamp holder 14 is situated between and places between two lugs 12, make the slotted hole 142 of clamp holder 14 involutory with the lockhole 13 of lug 12, in slotted hole 142 and lockhole 13 locking bolts 15, be this composite structure again.

See Fig. 2, shown in Figure 3, when the utility model uses, body 10 is sheathed on bicycle pipe part with trepanning 11, and makes the face that urges 143 of clamp holder 14 touch pipe fitting slightly, again lock bolt 15 gradually, make two lugs 12 close mutually, at this moment, because of the inclined-plane 140 of joining of the plane of inclination 120 of lug 12 and clamp holder 14 is the state that is involutory, so clamp holder 14 can move to trepanning 11 centers of body 10, and then pushing against pipe fitting, its body 10 just can effectively overlap and be fixed on the pipe fitting.

Therefore, by the said structure design, can conclude and the utlity model has following advantage:

1, fills up the formula structural design, can avoid stress to concentrate and destruction, significantly to improve structural strength; It is situated between between two lugs 12 and puts the clamp holder 14 of tool proper width, make it need not establish on the one hand that carefully to connect bar promptly plastic as existing structure, and in addition the aspect need not be planted existing structure as other and bent and cause stress to concentrate and destroy significantly, so can effectively improve structural strength, and promote its serviceability.

2, forward compels to support formula packing form, can effectively improve the packing effect; Its two lug 12 is situated between and puts clamp holder 14, and these clamp holder 14 1 ends are provided with the face of urging 143, can keep the out of roughness of body 10 trepannings 110 on the one hand, but the aspect forward urges bicycle pipe part in addition, so can effectively improve the packing effect.

In sum, structure of the present utility model has and fills up and forward urges function, can significantly improve the soundness of structural strength and packing, thoroughly improves the deficiency that existing structure produces.

Claims

1, the young composite structure of a kind of bundle, it has a body with C shape trepanning, and these body two ends respectively form a lug with lockhole, and make it and can be sheathed on bicycle pipe part by trepanning, and in the lockhole locking bolt of lug, to be locked in pipe fitting; It is characterized in that: the inner edge of this two lug respectively forms a plane of inclination, this two plane of inclination is towards the body center for enlarging the form of shape, and Jie puts a clamp holder between this two lug, these clamp holder both sides have the inclined-plane of joining that matches with above-mentioned plane of inclination, and this clamp holder one end formation one has the extension part of slotted hole.