CN204250269U - The U-shaped damping crotch leg of single tube forming - Google Patents
The U-shaped damping crotch leg of single tube forming Download PDFInfo
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- CN204250269U CN204250269U CN201420720862.7U CN201420720862U CN204250269U CN 204250269 U CN204250269 U CN 204250269U CN 201420720862 U CN201420720862 U CN 201420720862U CN 204250269 U CN204250269 U CN 204250269U
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Abstract
The utility model discloses a kind of U-shaped damping crotch leg of single tube forming, this U-shaped damping crotch leg comprises by tubing integrated U-shaped overlap joint section, fork leg section, fork section; U-shaped overlap section is positioned at the top of two fork leg sections and is interconnected by two fork leg sections, and it leans forward gradually from bottom to top or hypsokinesis bends, and the pipe tangent plane of U-shaped overlap joint section is c-shaped; Two fork leg sections are symmetrical and be parallel to each other; Two fork sections lay respectively at the bottom of two fork leg sections.The utility model is processed into single metal pipe material, and intensity is higher, and portable construction is handsome in appearance, and profile is smooth, more ensures product design; Its job operation does not relate to welding process substantially, and raw MAT'L, technique, cost of labor also greatly reduce.
Description
Technical field
The utility model relates to the shock mount fork leg for bicycle, specifically, relates to a kind of U-shaped damping crotch leg.
Background technology
Bicycle and Electrical Bicycle use shock-proof frame fork mostly because of road conditions.Especially in recent years popular both at home and abroad mountain bike, require more and more higher to shock-absorbing front fork, require that its intensity is good, rigidity is high, can bear the impulsive force on various road surface, field, reduces the probability of occurrence of the situations such as fracture, guarantee product service life.
Shock-absorbing front fork is formed by damping crotch leg and upper fork assembling components, and the shock mount fork leg that in current industry, producer uses is roughly divided into two classes: a class is formed by iron pipe, U-iron attaching parts and iron forks piece Combination Welding, as depicted in figs. 1 and 2; Be specially the iron pipe of two predetermined lengths, its one end adds that U-shaped iron attaching parts welds, and other end welding iron forks piece, as breeches pipe end, welds an all-pass pipe for installing lock fare at the rear side of iron pipe simultaneously.The advantage of this series products is low price, but owing to needing multiposition to weld, causes that cost of labor is high, outward appearance is coarse, low strength.Another kind of for using aluminum magnesium alloy raw material to be formed by the disposable casting of casting mould, as shown in Figure 3 and Figure 4.Although this series products outward appearance is comparatively smooth, complex process, single size can only use single mold, causes cost higher, causes intensity low, the fracture situation happened occasionally after place in operation in ride because Casting Parts density is low simultaneously.
Utility model content
To be solved in the utility modelly be that existing bicycle shock-proof frame fork outward appearance is coarse, low strength, the technical matters that light not, cost is higher, a kind of U-shaped damping crotch leg of single tube forming is provided, be processed into single metal pipe material, intensity is higher, portable construction, handsome in appearance, profile is smooth, more ensure product design, raw MAT'L, technique, cost of labor also greatly reduce.
In order to solve the problems of the technologies described above, the utility model is achieved by following technical scheme:
A U-shaped damping crotch leg for single tube forming, comprises and overlaps section, fork leg section, fork section by the integrated U-shaped of tubing;
Described U-shaped overlap section is positioned at the top of two described fork leg sections and is interconnected by two described fork leg sections, and it leans forward gradually from bottom to top or hypsokinesis bends, and the pipe tangent plane of described U-shaped overlap joint section is c-shaped;
Two described fork leg sections are symmetrical and be parallel to each other;
Two described fork sections lay respectively at the bottom of two described fork leg sections.
Wherein, described U-shaped overlap joint section is made up of double-layer tube wall, and this double-layer tube wall is by the inclined one-sided compression superpose-forming of tubing.
Wherein, described U-shaped overlap joint section is made up of individual layer tube wall.
Further, the thickness of pipe of described U-shaped overlap joint section is 0.5 ~ 5.0mm.
Further, described U-shaped overlap joint section is provided with tongue or groove along its U-shaped symmetric line.
Further, be wherein provided with on rear side of fork leg section described at least one by the wire conduit of its tube wall extrusion forming, described wire conduit is straight tube-like and communicates with the base portion of described fork leg section.
The beneficial effects of the utility model are:
(1) the utility model is one-body molded, saves soldered, and flat appearance, intensity are better, safety is high; The U-shaped overlap joint section wherein forming double-layer tube wall by the overlapping institute of the inclined one-sided compression of tubing has superhigh intensity; And by tubing cut U-shaped that institute forms individual layer tube wall overlap section can either proof strength, again can expendable weight, especially the light alloy metal tubing such as employing magnalium carries out processing and can make product lightweight more.
(2) main forming process of the present utility model does not relate to welding process, can avoid the problems such as the deforming displacement because welding processing error causes, not prison welding are solid, rough surface, effective Improving The Quality of Products, aesthetic appeal.
(3) the utility model can utilize pipe length to convert processing different size, relative to the casting product of a size casting mould, cost greatly reduces, and avoids the low density defect of Casting Parts simultaneously, adds intensity and the safety of product.
(4) the utility model is by single tube forming, effectively uses materials in the tube, reduces waste material, low-carbon environment-friendly, reduces manufacturing cost.
(5) the utility model can use the metal pipe material of any pipe tangent plane to process, and its moulding can according to doing polynary change needed for customer.
Accompanying drawing explanation
Fig. 1 is the front view of iron pipe welded type shock-absorbing front fork device of the prior art;
Fig. 2 is the lateral plan of iron pipe welded type shock-absorbing front fork device of the prior art;
Fig. 3 is the front view of aluminum magnesium alloy cast type shock-absorbing front fork device of the prior art;
Fig. 4 is the lateral plan of aluminum magnesium alloy cast type shock-absorbing front fork device of the prior art;
Fig. 5 be embodiment 1 the front view of the U-shaped damping crotch leg of single tube forming is provided;
Fig. 6 be embodiment 1 the lateral plan of the U-shaped damping crotch leg of single tube forming is provided, wherein U-shaped overlap joint section tip forward bend is bent;
Fig. 7 be embodiment 1 the lateral plan of the U-shaped damping crotch leg of single tube forming is provided, wherein U-shaped overlap joint section tip back bend is bent;
Fig. 8 be embodiment 1 the job operation schematic flow sheet of the U-shaped damping crotch leg of single tube forming is provided;
Fig. 9 be embodiment 1 structural representation as raw-material single tubing in job operation is provided;
Figure 10 be embodiment 1 the front view of finished product after first time bend pipe processing is provided in job operation;
Figure 11 be embodiment 1 the lateral plan of finished product after first time bend pipe processing is provided in job operation;
Figure 12 be embodiment 1 the front view of finished product after the processing of second time bend pipe is provided in job operation;
Figure 13 be embodiment 1 the lateral plan of finished product after the processing of second time bend pipe is provided in job operation;
Figure 14 be embodiment 1 the front view of finished product after the processing of arc making mouth in job operation is provided;
Figure 15 be embodiment 1 the lateral plan of finished product after the processing of arc making mouth in job operation is provided;
Figure 16 be embodiment 1 the front view of finished product after the processing of extrusion forming in job operation is provided;
Figure 17 be embodiment 1 the lateral plan of finished product after the processing of extrusion forming in job operation is provided;
Figure 18 be embodiment 1 the front view of finished product after the processing of expander in job operation is provided;
Figure 19 be embodiment 1 the lateral plan of finished product after the processing of expander in job operation is provided;
Figure 20 be embodiment 1 the front view of finished product after third time bend pipe processing is provided in job operation;
Figure 21 be embodiment 1 the lateral plan of finished product after third time bend pipe processing is provided in job operation;
Figure 22 is the front view of the damping crotch leg composition shock-absorbing front fork device that embodiment 1 provides;
Figure 23 is the lateral plan of the damping crotch leg composition shock-absorbing front fork device that embodiment 1 provides, and wherein U-shaped overlap joint section tip forward bend is bent;
Figure 24 is the lateral plan of the damping crotch leg composition shock-absorbing front fork device that embodiment 1 provides, and wherein U-shaped overlap joint section tip back bend is bent;
Figure 25 be embodiment 2 the front view of the U-shaped damping crotch leg of single tube forming is provided;
Figure 26 be embodiment 2 the lateral plan of the U-shaped damping crotch leg of single tube forming is provided, wherein U-shaped overlap joint section tip forward bend is bent;
Figure 27 be embodiment 2 the lateral plan of the U-shaped damping crotch leg of single tube forming is provided, wherein U-shaped overlap joint section tip back bend is bent;
Figure 28 be embodiment 2 the job operation schematic flow sheet of the U-shaped damping crotch leg of single tube forming is provided;
Figure 29 be embodiment 2 structural representation as raw-material single tubing in job operation is provided;
Figure 30 be embodiment 2 the front view of finished product after the processing of bend pipe in job operation is provided;
Figure 31 be embodiment 2 the lateral plan of finished product after the processing of bend pipe in job operation is provided;
Figure 32 be embodiment 2 the front view of finished product after cutting in job operation is provided;
Figure 33 be embodiment 2 the lateral plan of finished product after cutting in job operation is provided;
Figure 34 be embodiment 2 the front view of finished product after processing of bending is provided in job operation;
Figure 35 be embodiment 2 the lateral plan of finished product after processing of bending is provided in job operation;
Figure 36 be embodiment 2 pipe sectional drawing in job operation after the first tangent plane shaping is provided;
Figure 37 be embodiment 2 pipe sectional drawing in job operation after the shaping of the second tangent plane is provided;
Figure 38 be embodiment 2 the front view of finished product after the processing of expander in job operation is provided;
Figure 39 be embodiment 2 the lateral plan of finished product after the processing of expander in job operation is provided;
Figure 40 be embodiment 2 the front view of finished product after the processing of second time bend pipe is provided in job operation;
Figure 41 be embodiment 2 the lateral plan of finished product after the processing of second time bend pipe is provided in job operation;
Figure 42 is the front view of the damping crotch leg composition shock-absorbing front fork device that embodiment 2 provides;
Figure 43 is the lateral plan of the damping crotch leg composition shock-absorbing front fork device that embodiment 2 provides, and wherein U-shaped overlap joint section tip forward bend is bent;
Figure 44 is the lateral plan of the damping crotch leg composition shock-absorbing front fork device that embodiment 2 provides, and wherein U-shaped overlap joint section tip back bend is bent.
In figure: 1, U-shaped overlap joint section; 2, wide diameter portion; 3, fork leg section; 4, fork section; 5, U-shaped top section; 6, wire conduit; 7, nock.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Embodiment 1
As shown in Figures 5 to 7, the present embodiment 1 discloses a kind of U-shaped damping crotch leg of single tube forming, mainly comprise U-shaped overlap joint section 1, two fork leg sections 3, two fork sections 4, U-shaped overlap joint section 1, fork leg section 3, fork section 4 are integrated by tubing, and the thickness of pipe of tubing is 0.5 ~ 5.0mm.
U-shaped overlap joint section 1 be positioned at two fork leg sections 3 top and by two they be interconnected.U-shaped overlap joint section 1 leans forward bending from bottom to top with certain radian gradually, as shown in Figure 6; Or with certain radian, hypsokinesis is bending gradually from bottom to top for U-shaped overlap joint section 1, as shown in Figure 7.It should be noted that, the "front", "rear" direction mentioned in present specification is is benchmark with the fore-and-aft direction of bicycle or Electrical Bicycle.The position that U-shaped overlap joint section 1 is connected with two fork leg sections 3 is provided with nock 7, and the U-shaped overlap joint section 1 of nock more than 7, by the overlapping c-shaped tangent plane of the inclined one-sided compression of tubing, is therefore double-layer tube wall.
U-shaped overlap joint section 1, in order to the mud guard of fixing car front-wheel, improves the intensity of damping crotch leg simultaneously.U-shaped overlap joint section 1 is Double-layer pipe wall thickness, compares the bulk strength that traditional welding formula structure considerably increases damping crotch leg, significantly reduces the probability that fork leg section 3 deforms in transport and use procedure.
Two fork leg sections 3 are straight tube structure, are parallel to each other and symmetrically.The part that two fork leg sections 3 are connected on U-shaped overlap joint section 1 is wide diameter portion 2, and when this wide diameter portion 2 assemble for finished product, press-in lubricative axle sleeve, is beneficial to damping.One of them fork leg section 3 is provided with the wire conduit 6 for fixing brake cable on rear side of its wide diameter portion 2, general consistent with tradition, is arranged on the fork leg section 3 in left side.Wire conduit 6 is directly squeezed into straight tube-like by the tube wall of fork leg section 3, therefore communicates with the base portion of fork leg section 3, as shown in figure 17; Can welding process be saved like this, connect more firm, smooth surface and not yielding.
Two fork sections 4 lay respectively at the bottom of two fork leg sections 3, and fork section 4 has certain camber and becomes flat-shaped, to assemble with car front-wheel in a conventional manner.The least significant end of fork section 4 has otch, and this otch is used for being connected and fixed by bolt and car front wheel spindle core place.
As shown in Figure 8, the U-shaped damping crotch leg of embodiment 1 be by sequentially to single metal pipe material carry out first time bend pipe, second time bend pipe, arc making mouth, extrusion forming, expander, third time bend pipe, flatten the job operation of otch and make.Below for the U-shaped damping crotch leg that U-shaped overlap joint section 1 leans forward bending, concrete operation step is described in detail in detail as follows:
As shown in Figure 9, prepare the metal circular tube of a predetermined length, this metal circular tube can also by replacements such as pipe, oval pipe, rectangular tube, D shape pipe, triangle tubes.
As shown in Figure 10 and Figure 11, by the midway location bending of the metal pipe material of predetermined length by its length direction, namely first time bend pipe processing, forms U-shaped top section 5 and two fork leg sections 3.Two fork leg sections 3 link together by U-shaped top section 5, and two fork leg sections 3 are parallel to each other and symmetrically.
As shown in Figure 12 and Figure 13, U-shaped top section 5 is carried out the processing of second time bend pipe, make it lean forward bending by bottom to top gradually with certain radian.
As shown in Figure 14 and Figure 15, the rear side arc making mouth 7 of two positions that connects with fork leg section 3 of U-shaped top section 5 upon bending.
As shown in Figure 16 and Figure 17, adopt hydraulic molding machine device by the part forward partially one-sided compression of the U-shaped top section 5 of made nock 7 by nock more than 7, thereafter half tube wall and first half tube wall are adjacent to, thus formed have two-layer tube wall overlap and for C shape tangent plane U-shaped overlap joint section 1.
As shown in Figure 18 and Figure 19, two fork leg sections 3 are connected on the part of U-shaped overlap joint section 1, adopt hydraulic molding machine device to carry out expander processing according to the predetermined moulding of design, form two wide diameter portions 2 respectively.Meanwhile, adopt the projection squeezing out straight tube-like on rear side of the wide diameter portion 2 of a hydraulic molding machine device fork leg section 3 wherein, form wire conduit 6.Welding process is saved in the processing of this wire conduit 6, one-shot forming.
As shown in Figure 20 and Figure 21, third time bend pipe processing is carried out according to the radian of designed predetermined moulding in the bottom of two fork leg sections 3.
Finally, the part after the processing of two fork leg section 3 third time bend pipes is carried out the processing of flattening otch according to the predetermined moulding of design, forms fork section 4, form final finished as shown in Figures 5 to 7.
As shown in Figure 22 to Figure 24, by the U-shaped damping crotch leg that completes together with upper fork assembling components, shock-absorbing front fork device can be formed.The main forming process of the present embodiment 1 does not relate to welding process, there is the structure of integration, flat appearance is attractive in appearance, the equitant U-shaped of two-layer tube wall overlaps section 1 structure and avoids low density casting to add product strength, product design significantly improves, and raw MAT'L, technique, cost of labor also greatly reduce simultaneously.
Embodiment 2
As shown in Figure 25 to Figure 27, present embodiment discloses a kind of U-shaped damping crotch leg of single tube forming, mainly comprise U-shaped overlap joint section 1, two fork leg sections 3, two fork sections 4, U-shaped overlap joint section 1, fork leg section 3, fork section 4 are integrated by tubing.
U-shaped overlap joint section 1 be positioned at two fork leg sections 3 top and by two they be interconnected.U-shaped overlap joint section 1 leans forward bending from bottom to top with certain radian gradually, as shown in figure 26; Or with certain radian, hypsokinesis is bending gradually from bottom to top for U-shaped overlap joint section 1, as shown in figure 27.U-shaped overlap joint section 1 falls a part by tubing straight-cut, and therefore it has the C shape pipe tangent plane be made up of individual layer tube wall.
U-shaped overlap joint section 1 can also be provided with tongue or groove along its U-shaped symmetric line, tongue or groove can play the effect of similar reinforced rib, the bulk strength of further increase damping crotch leg, reduces the probability that fork leg section 3 deforms in transport and use procedure.
U-shaped overlap joint section 1, in order to the mud guard of fixing car front-wheel, improves the intensity of damping crotch leg simultaneously.U-shaped overlap joint section 1 is individual layer tube wall thickness, compares the bulk strength that traditional welding formula structure can either ensure damping crotch leg, makes weight saving again, make damping crotch leg lighter.
Two fork leg sections 3 are straight tube structure, are parallel to each other and symmetrically.The part that two fork leg sections 3 are connected on U-shaped overlap joint section 1 is wide diameter portion 2, and when this wide diameter portion 2 assemble for finished product, press-in lubricative axle sleeve, is beneficial to damping.The wire conduit 6 being used for fixing brake cable can also be set one of them fork leg section 3 on rear side of its wide diameter portion 2, general consistent with tradition, be arranged on the fork leg section 3 in left side.Wire conduit 6 is directly squeezed into straight tube-like by the tube wall of fork leg section 3, therefore communicates with the base portion of fork leg section 3, can save welding process like this, connects more firm, smooth surface and not yielding.
Two fork sections 4 lay respectively at the bottom of two fork leg sections 3, and fork section 4 has certain camber and becomes flat-shaped, to assemble with car front-wheel in a conventional manner.The lowermost end of fork section 4 has otch, and this otch is used for being connected and fixed by bolt and car front wheel spindle core place.
As shown in figure 28, the U-shaped damping crotch leg of embodiment 2 is by sequentially carrying out first time bend pipe, cutting, press-bending, expander, tangent plane shaping, second time bend pipe to single metal pipe material, flattens the job operation of otch and make.Below for the U-shaped damping crotch leg that U-shaped overlap joint section 1 leans forward bending, concrete operation step is described in detail in detail as follows:
As shown in figure 29, prepare the metal circular tube of a predetermined length, this metal circular tube can also by replacements such as pipe, oval pipe, rectangular tube, D shape pipe, triangle tubes, and the thickness of pipe of tubing is 0.5 ~ 5.0mm.
As shown in figures 30 and 31, by the midway location bending of the metal pipe material of predetermined length by its length direction, namely first time bend pipe processing, forms U-shaped top section 5 and two fork leg sections 3.Two fork leg sections 3 link together by U-shaped top section 5, and two fork leg sections 3 are parallel to each other and symmetrically.
As shown in Figure 32 and Figure 33, U-shaped top section 5 U-shaped symmetric line is longitudinally machined away half body, after cutting, its pipe tangent plane is c-shaped.
As shown in figs. 34 and 35, the U-shaped top section 5 after cutting is carried out press-bending processing, makes it lean forward bending by bottom to top gradually with certain radian.
Now, U-shaped top section 5 can be squeezed out tongue along its U-shaped symmetric line, the pipe tangent plane after processing as shown in figure 36; Or squeezing out groove, the pipe tangent plane after processing is as shown in figure 37.
As shown in Figure 38 and Figure 39, two fork leg sections 3 are connected on the part of U-shaped overlap joint section 1, adopt hydraulic molding machine device to carry out expander processing according to the predetermined moulding of design, form two wide diameter portions 2 respectively.Meanwhile, adopt the projection squeezing out straight tube-like on rear side of the wide diameter portion 2 of a hydraulic molding machine device fork leg section 3 wherein, form wire conduit 6.Welding process is saved in the processing of this wire conduit 6, one-shot forming.
As shown in Figure 40 and Figure 41, third time bend pipe processing is carried out according to the radian of designed predetermined moulding in the bottom of two fork leg sections 3.
Finally, the part after the processing of two fork leg section 3 third time bend pipes is carried out the processing of flattening otch according to the predetermined moulding of design, forms fork section 4, form the final finished as shown in Figure 25 to Figure 27.
As shown in Figure 42 to Figure 44, by the U-shaped damping crotch leg that completes together with upper fork assembling components, shock-absorbing front fork device can be formed.Main forming process of the present utility model does not relate to welding process, and have the structure of integration, flat appearance is attractive in appearance, portable construction, avoid low density casting to add product strength, product design significantly improves, and raw MAT'L, technique, cost of labor also greatly reduce simultaneously.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that present inventive concept and claim protect, can also make the concrete conversion of a lot of form, these all belong within protection domain of the present utility model.
Claims (6)
1. a U-shaped damping crotch leg for single tube forming, is characterized in that, comprises and overlaps section, fork leg section, fork section by the integrated U-shaped of tubing;
Described U-shaped overlap section is positioned at the top of two described fork leg sections and is interconnected by two described fork leg sections, and it leans forward gradually from bottom to top or hypsokinesis bends, and the pipe tangent plane of described U-shaped overlap joint section is c-shaped;
Two described fork leg sections are symmetrical and be parallel to each other;
Two described fork sections lay respectively at the bottom of two described fork leg sections.
2. the U-shaped damping crotch leg of a kind of single tube forming according to claim 1, is characterized in that, described U-shaped overlap joint section is made up of double-layer tube wall, and this double-layer tube wall is by the inclined one-sided compression superpose-forming of tubing.
3. the U-shaped damping crotch leg of a kind of single tube forming according to claim 1, is characterized in that, described U-shaped overlap joint section is made up of individual layer tube wall.
4. the U-shaped damping crotch leg of a kind of single tube forming according to claim 3, is characterized in that, the thickness of pipe of described U-shaped overlap joint section is 0.5 ~ 5.0mm.
5. the U-shaped damping crotch leg of a kind of single tube forming according to claim 1, is characterized in that, described U-shaped overlap joint section is provided with tongue or groove along its U-shaped symmetric line.
6. the U-shaped damping crotch leg of a kind of single tube forming according to claim 1, it is characterized in that, wherein be provided with on rear side of fork leg section described at least one by the wire conduit of its tube wall extrusion forming, described wire conduit is straight tube-like and communicates with the base portion of described fork leg section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420720862.7U CN204250269U (en) | 2014-10-13 | 2014-11-25 | The U-shaped damping crotch leg of single tube forming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014205919535 | 2014-10-13 | ||
| CN201420591953 | 2014-10-13 | ||
| CN201420720862.7U CN204250269U (en) | 2014-10-13 | 2014-11-25 | The U-shaped damping crotch leg of single tube forming |
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| CN204250269U true CN204250269U (en) | 2015-04-08 |
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| CN201420720862.7U Expired - Fee Related CN204250269U (en) | 2014-10-13 | 2014-11-25 | The U-shaped damping crotch leg of single tube forming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401437A (en) * | 2014-10-13 | 2015-03-11 | 天津市摩大金属制品有限公司 | U-shaped shock absorption fork leg formed by single pipeline and manufacturing method of U-shaped shock absorption fork leg |
-
2014
- 2014-11-25 CN CN201420720862.7U patent/CN204250269U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401437A (en) * | 2014-10-13 | 2015-03-11 | 天津市摩大金属制品有限公司 | U-shaped shock absorption fork leg formed by single pipeline and manufacturing method of U-shaped shock absorption fork leg |
| CN104401437B (en) * | 2014-10-13 | 2017-02-01 | 天津市摩大金属制品有限公司 | U-shaped shock absorption fork leg formed by single pipeline and manufacturing method of U-shaped shock absorption fork leg |
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