CN216861700U - Double-lower-tube designed carbon fiber bicycle - Google Patents
Double-lower-tube designed carbon fiber bicycle Download PDFInfo
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- CN216861700U CN216861700U CN202121594797.4U CN202121594797U CN216861700U CN 216861700 U CN216861700 U CN 216861700U CN 202121594797 U CN202121594797 U CN 202121594797U CN 216861700 U CN216861700 U CN 216861700U
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Abstract
The utility model relates to a double-lower-tube designed carbon fiber bicycle which comprises a bicycle frame, wherein the bicycle frame is provided with a head tube area, an upper tube, a vertical tube, a lower tube, a five-way area, a rear upper fork and a rear lower fork, the lower tube connected between the head tube area and the five-way area is divided into the double lower tubes arranged in parallel from the head tube area, and the double lower tubes are connected to the five-way area and then combined into a whole. The bicycle lower tube type bicycle has a simple structure, solves the problem of poor stability when the bicycle is changed from vertical riding to inclined riding when the bicycle is ridden in a large-radian turn, and realizes the riding stability of a product in the large-radian turn by changing one lower tube into two lower tubes and combining the change of the tube type of the lower tubes, the change of the positions of the kettle holes and the adjustment design of the five-way area shape.
Description
Technical Field
The utility model relates to the technical field of bicycle product design, in particular to a carbon fiber bicycle with double lower tubes.
Background
With the concept of environmental protection and body building of the whole people being deeply popular in recent years, the environment-friendly and healthy bicycle is more and more popular with the masses. The carbon fiber composite material bicycle has the characteristics of light weight, high specific strength, various shapes, good shock absorption, chemical corrosion resistance, good weather resistance and the like, gradually replaces metal bicycles, and is widely applied to the production of various medium and high-grade bicycles.
Present conventional carbon fiber bicycle design is in the region of an independent lower tube connector district and five-way district, and the posture of riding the bicycle when riding big radian turn is by riding perpendicularly to change into when the slope is ridden, poor stability.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a carbon fiber bicycle with double lower tubes, which solves the problem of poor stability when the riding posture of the bicycle is changed from vertical riding to inclined riding when the bicycle is ridden in a large-radian turn.
The utility model is realized by the following technical scheme:
the utility model provides a two low tube design carbon fiber bicycle, includes the frame, and the frame is equipped with head pipe area, top tube, riser, low tube, five-way district, back upper fork and back lower fork, connects the low tube between head pipe area and five-way district and distinguishes fork form the fork and become the two low tubes that set up side by side from the head pipe, and two low tubes merge into a whole in being connected to five-way district.
Furthermore, a transitional concave structure is arranged at the lower side position of the five-way area.
The transition concave design of the five-way area ensures smooth transition of the double lower tubes and the five-way area, improves the five-way strength and increases the driving efficiency of riding and treading.
Furthermore, the section of the lower pipe is two single pipes with semicircular sections, the planes of the two single pipes are opposite, and the arc surfaces are opposite.
Furthermore, the distance between the two single tubes of the double lower tubes is 5-25 mm.
Furthermore, two single tubes of the double lower tubes are respectively provided with a kettle hole.
The design of two low pipes combines kettle hole position respectively to design one about, two low pipes bear the weight of kettle simultaneously when riding the line use, guarantee the focus equilibrium when the conventional bicycle of change two low pipes back.
Furthermore, the planes of the two single tubes of the double lower tubes are respectively provided with a bulge in a protruding way towards the opposite plane, and kettle holes are respectively arranged on the two bulges.
Further, the width of the lower tube is slightly larger than the width of the head tube area or the width of the five-way area.
The whole cross section that two low tubes merge together can not be too big, leads to surpassing the head pipe district and five-way district, guarantees that the bicycle is whole pleasing to the eye.
The utility model has the beneficial effects that:
the utility model provides a, the bicycle is when riding big radian and turning, because the bicycle gesture of riding is changed into the slope gesture by riding perpendicularly, and stability can worsen when riding, leads to riding passerby accuse car nature difficult, becomes two single-tube designs through becoming a single tube to the low tube, can effectively improve the stability of bicycle when big radian turns.
The design of the double lower tubes is combined with the change that the positions of the kettle holes are respectively designed on the left lower tube and the right lower tube, when the bicycle is ridden, the double lower tubes bear the weight of the kettle, and the gravity center balance of the bicycle is guaranteed when the bicycle is ridden after the double lower tubes are changed.
And the transitional concave design of the five-way area ensures smooth transition of the double lower tubes and the five-way area, improves the five-way strength and increases the driving efficiency of riding and treading.
Fourthly, simple structure, convenient to use does not increase the weight of frame on the basis of promoting bicycle frame performance.
When the frame is turned at a large radian, the frame can incline at a certain angle in the direction vertical to the ground for resisting the centrifugal force of turning, at the moment, due to the decomposition of force, the lower pipe is stressed little in the horizontal direction from the original large vertical direction stress, so that the lower pipe is changed into the mode that the stress of the lower pipe in the horizontal direction is gradually increased, and the design of the double lower pipes is increased to four surfaces, namely the left outer side, the left inner side, the right inner side and the right outer side, from two surfaces, namely the left outer side and the right outer side in the horizontal direction, so that the horizontal stress has an amplification effect, and the stability during turning at the large radian is favorably improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a bottom perspective view of FIG. 1;
FIG. 4 is a graph showing the data of the rigidity of the carbon fiber bicycle frame with two lower tubes according to the present invention and a conventional bicycle frame.
Shown in the figure:
1 pipe area, 2 top tubes, 3 low tubes, 31 single tubes, 4 five-way areas, 5 stand tubes, 6 rear upper forks, 7 rear lower forks, 8 bulges, 9 kettle holes.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
The utility model provides a two low tube design carbon fiber bicycle, which comprises a vehicle rack, the frame uses the carbon-fibre composite preparation, the frame is equipped with head district 1 in district, go up pipe 2, riser 5, low tube 3, five-way district 4, back upper fork 6 and back lower fork 7, connect the low tube 3 between head district 1 and five-way district 4 and form the two low tubes that set up side by side from head district 1 bifurcation, and two low tubes merge into a whole again being connected to five-way district 4, the width of low tube 3 slightly is greater than the width in head district 1 or the width of five-way district 4, five-way district 4 has a transition indent in the below position.
Wherein: the section of the lower tube 3 is a single tube 31 with two semicircular sections, the planes of the two single tubes 31 are opposite, the arc surfaces are back to back, the distance between the two single tubes of the double lower tubes is 5-25 mm, and in the embodiment, the distance between the two single tubes of the double lower tubes is 20 mm.
In view of the fact that the product is designed with double lower tubes innovatively, the core materials of the double lower tubes are preferentially manufactured during rolling of the product, carbon fiber prepreg is laid on the core materials, the product is combined with the insert through the design of the built-in insert of the die during forming, and then the combined body is placed in a die cavity for forming.
By detecting the rigidity data of the double-down-tube carbon fiber bicycle prepared by the embodiment and the traditional bicycle, as shown in fig. 4, the rigidity and the strength of the double-down-tube carbon fiber bicycle prepared by the process of the embodiment are greatly improved under the condition of a precursor with the same weight.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a two low tube design carbon fiber bicycles is equipped with the frame, and the frame includes head tube district, top tube, riser, low tube, five pass through district, back upper fork and back lower fork, its characterized in that: the lower tubes connected between the head tube area and the five-way area are forked from the head tube area into double lower tubes arranged in parallel, and the double lower tubes are connected to the five-way area and then combined into a whole.
2. The double down tube designed carbon fiber bicycle frame of claim 1, characterized in that: the bottom of the five-way area is provided with a transitional concave structure.
3. The double down tube designed carbon fiber bicycle frame of claim 1, characterized in that: the section of the lower pipe is two single pipes with semicircular sections, the planes of the two single pipes are opposite, and the arc surfaces are opposite.
4. The double down tube designed carbon fiber bicycle frame of claim 3, wherein: the distance between the two single tubes of the double lower tubes is 5-25 mm.
5. The double down tube designed carbon fiber bicycle frame of claim 3, wherein: two single tubes of the double lower tubes are respectively provided with a kettle hole.
6. The double down tube designed carbon fiber bicycle frame of claim 5, characterized in that: the plane of two single tubes of the double lower tubes is respectively provided with a bulge towards the opposite plane in a protruding way, and the kettle holes are respectively arranged on the two bulges.
7. The double down tube design carbon fiber bicycle of claim 1, wherein: the width of the lower tube is slightly greater than the width of the head tube region or the width of the five-way region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121594797.4U CN216861700U (en) | 2021-07-14 | 2021-07-14 | Double-lower-tube designed carbon fiber bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121594797.4U CN216861700U (en) | 2021-07-14 | 2021-07-14 | Double-lower-tube designed carbon fiber bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216861700U true CN216861700U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121594797.4U Active CN216861700U (en) | 2021-07-14 | 2021-07-14 | Double-lower-tube designed carbon fiber bicycle |
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| Country | Link |
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| CN (1) | CN216861700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353183A (en) * | 2021-07-14 | 2021-09-07 | 山东泰山瑞豹复合材料有限公司 | Double-lower-tube designed carbon fiber bicycle |
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2021
- 2021-07-14 CN CN202121594797.4U patent/CN216861700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353183A (en) * | 2021-07-14 | 2021-09-07 | 山东泰山瑞豹复合材料有限公司 | Double-lower-tube designed carbon fiber bicycle |
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