CN105292354A - Lower beam pipe of bicycle - Google Patents
Lower beam pipe of bicycle Download PDFInfo
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- CN105292354A CN105292354A CN201510690623.0A CN201510690623A CN105292354A CN 105292354 A CN105292354 A CN 105292354A CN 201510690623 A CN201510690623 A CN 201510690623A CN 105292354 A CN105292354 A CN 105292354A
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- pipe
- lower beam
- pipe face
- arc surface
- face
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Abstract
The invention provides a lower beam pipe of a bicycle, and belongs to the technical field of bicycle components and parts. The lower beam pipe comprises a lower beam pipe body in a hollow structure, wherein the cross section of the lower beam pipe body is in a bilaterally symmetric quadrangular structure; the lower beam pipe body comprises an upper pipe surface and a lower pipe surface; a left pipe surface and a right pipe surface are arranged between the upper pipe surface and the lower pipe surface; a reinforcing rib is connected between the upper pipe surface and the lower pipe surface; the lower beam pipe body is divided into two independent spaces by the reinforcing rib; the left pipe surface and the right pipe surface are symmetrically arranged with regard to the reinforcing rib; and among the upper pipe surface, the left pipe surface, the right pipe surface and the lower pipe surface, an arc surface is arranged at an intersection place of every two adjacent pipe surface. The lower beam pipe is attractive in appearance; the lower beam pipe body is thinner and is high in strength, so that no cracking situation happens easily; the manufactured bicycle is light in mass, is relatively light and handy, and is convenient and quick; people can comfortably ride the bicycle with ease; and the application scope is wide.
Description
Technical field
The present invention relates to bicycle part field, specifically a kind of lower beam pipe of bicycle.
Background technology
In recent years, due to the develop rapidly of national economy and economy, the practicality of bicycle, bicycle obtains very large popularizing, and people have not only experienced convenience with quick in the use procedure of bicycle, have also discovered some problems that bicycle exists.At present, section bar for the manufacture of bicycle is varied, the lower beam pipe of bicycle is as the bearing tube of bicycle, stricter to its requirement of strength, but the section bar of the lower beam pipe of most of bicycle is a hollow tubular, in order to strengthen the intensity of hollow tubular, certainly will to increase the wall thickness of hollow tubular or increasing the size of hollow tubular.Such Problems existing is, the quality of hollow tubular is larger, owing to being subject to the effect of different directions power, the easy situation occurring fracture, in order to avoid the generation of the problems referred to above, after increasing the wall thickness of hollow tubular and size, certainly will produced bicycle quality weight, heavier, people ride more painstaking.
Summary of the invention
The problem to be solved in the present invention is: overcome the deficiencies in the prior art, a kind of lower beam pipe of bicycle is provided, specious, lower beam pipe body is thinner and intensity is large, be not easy the situation occurring fracture, produced bicycle quality is light, more lightly, convenient, people ride light, comfortable, applied widely.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of lower beam pipe of bicycle, comprise the lower beam pipe body of a hollow structure, the cross-sectional plane of described lower beam pipe body is symmetrical quadrilateral structure, described lower beam pipe body comprises pipe face and lower pipe face, left pipe face and right pipe face is provided with between described upper pipe face and lower pipe face, a reinforced rib is connected with between described upper pipe face and lower pipe face, lower beam pipe body is separated into two separate space by described reinforced rib, described left pipe face and right pipe face are symmetrical arranged about reinforced rib, described upper pipe face, left pipe face, in right pipe face and lower pipe face, the intersection in adjacent two pipe faces is arc surface, the intersection in described reinforced rib and upper pipe face and lower pipe face is arc surface.
Further, the middle and upper part in described left pipe face and right pipe face is arc-shaped structure, and the radius of the middle and upper part in described left pipe face and right pipe face is 98-102mm, and the bottom in described left pipe face and right pipe face is for facing structure directly.
Further, the intersection of the middle and upper part in described upper pipe face and left pipe face and right pipe face is respectively arc surface one and arc surface two, and the intersection of the bottom in described lower pipe face and left pipe face and right pipe face is respectively arc surface three and arc surface four.
Further, the radius of described arc surface one and arc surface two is 4.5-5.5mm, and the radius of described arc surface three and arc surface four is 6-9mm.
Further, the intersection in described reinforced rib and upper pipe face is respectively arc surface five and arc surface six, and the intersection in described reinforced rib and lower pipe face is respectively arc surface seven and arc surface eight.
Further, the radius of described arc surface five, arc surface six, arc surface seven and arc surface eight is 1.8-2.2mm.
Further, the thickness in described upper pipe face is 2-3mm, and the thickness in described lower pipe face is 2.5-3.5mm.
Further, the thickness of described reinforced rib is 1.8-2.2mm.
Further, the height a of described lower beam pipe body is 68-72mm, and the width b of described lower beam pipe body is 33-36mm.
Further, the material of described lower beam pipe body and reinforced rib is aluminum alloy.
The advantage that the present invention has and good effect are:
The lower beam pipe of bicycle of the present invention, lower beam pipe body is hollow structure, and forms quadrilateral structure by four faces, and the middle and upper part in left pipe face and right pipe face is arc-shaped structure, and the bottom in left pipe face and right pipe face is for facing structure directly, specious; Be provided with reinforced rib in lower beam pipe body interior, in order to increase the intensity of lower beam pipe without the need to increasing size and the wall thickness of lower beam pipe body, make whole lower beam pipe body thinner and intensity is large, being not easy the situation occurring fracture; Adopt the produced bicycle quality of lower beam pipe of the present invention light, more lightly, convenient, people ride light, comfortable; Because intensity ratio of the present invention is comparatively large, not only for the manufacture of the bicycle needed for asian population, and be applicable to American-European crowd, applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the lower beam pipe of bicycle of the present invention.
In figure: 1, lower beam pipe body; 2, upper pipe face; 3, lower pipe face; 4, left pipe face; 5, right pipe face; 6, reinforced rib; 7, arc surface one; 8, arc surface two; 9, arc surface three; 10, arc surface four; 11, arc surface five; 12, arc surface six; 13, arc surface seven; 14, arc surface eight.
Detailed description of the invention
As shown in Figure 1, a kind of lower beam pipe of bicycle, comprises the lower beam pipe body 1 of a hollow structure, and the height a of lower beam pipe body 1 is 70mm, and the width b of lower beam pipe body 1 is 34mm;
The cross-sectional plane of lower beam pipe body 1 is symmetrical quadrilateral structure, lower beam pipe body 1 comprises pipe face 2 and lower pipe face 3, the thickness in upper pipe face is 2.4mm, the thickness in lower pipe face is 3mm, left pipe face 4 and right pipe face 5 is provided with between upper pipe face 2 and lower pipe face 3, the middle and upper part in left pipe face 4 and right pipe face 5 is arc-shaped structure, and the radius of the middle and upper part in left pipe face 4 and right pipe face 5 is 100mm, and the bottom in left pipe face 4 and right pipe face 5 is for facing structure directly;
A reinforced rib 6 is connected with between upper pipe face 2 and lower pipe face 3, the thickness of reinforced rib 6 is 2mm, lower beam pipe body 1 is separated into two separate space by reinforced rib 6, left pipe face 4 and right pipe face 5 are symmetrical arranged about reinforced rib 6, upper pipe face 2, left pipe face 4, in right pipe face 5 and lower pipe face 3, the intersection in adjacent two pipe faces is arc surface, the intersection of the middle and upper part in upper pipe face 2 and left pipe face 4 and right pipe face 5 is respectively arc surface 1 and arc surface 28, the radius of cambered surface 1 and arc surface 28 is 5mm, the intersection of the bottom in lower pipe face 3 and left pipe face 4 and right pipe face 5 is respectively arc surface 39 and arc surface 4 10, the radius of arc surface 39 and arc surface 4 10 is 8mm, reinforced rib 6 is arc surface with the intersection in upper pipe face 2 and lower pipe face 3, reinforced rib 6 is respectively arc surface 5 11 and arc surface 6 12 with the intersection in upper pipe face 2, reinforced rib 6 is respectively arc surface 7 13 and arc surface 8 14 with the intersection in lower pipe face 3, arc surface 5 11, arc surface 6 12, the radius of arc surface 7 13 and arc surface 8 14 is 2mm,
Lower beam pipe body 1 is aluminum alloy with the material of reinforced rib 6.
The lower beam pipe of bicycle of the present invention, lower beam pipe body is hollow structure, and forms quadrilateral structure by four faces, and the middle and upper part in left pipe face and right pipe face is arc-shaped structure, and the bottom in left pipe face and right pipe face is for facing structure directly, specious; Be provided with reinforced rib in lower beam pipe body interior, in order to increase the intensity of lower beam pipe without the need to increasing size and the wall thickness of lower beam pipe body, make whole lower beam pipe body thinner and intensity is large, being not easy the situation occurring fracture; Adopt the produced bicycle quality of lower beam pipe of the present invention light, more lightly, convenient, people ride light, comfortable; Because intensity ratio of the present invention is comparatively large, not only for the manufacture of the bicycle needed for asian population, and be applicable to American-European crowd, applied widely.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiments of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (10)
1. the lower beam pipe of a bicycle, comprise the lower beam pipe body of a hollow structure, it is characterized in that: the cross-sectional plane of described lower beam pipe body is symmetrical quadrilateral structure, described lower beam pipe body comprises pipe face and lower pipe face, left pipe face and right pipe face is provided with between described upper pipe face and lower pipe face, a reinforced rib is connected with between described upper pipe face and lower pipe face, lower beam pipe body is separated into two separate space by described reinforced rib, described left pipe face and right pipe face are symmetrical arranged about reinforced rib, described upper pipe face, left pipe face, in right pipe face and lower pipe face, the intersection in adjacent two pipe faces is arc surface, the intersection in described reinforced rib and upper pipe face and lower pipe face is arc surface.
2. the lower beam pipe of a kind of bicycle according to claim 1, it is characterized in that: the middle and upper part in described left pipe face and right pipe face is arc-shaped structure, the radius of the middle and upper part in described left pipe face and right pipe face is 98-102mm, and the bottom in described left pipe face and right pipe face is for facing structure directly.
3. the lower beam pipe of a kind of bicycle according to claim 1, it is characterized in that: the intersection of the middle and upper part in described upper pipe face and left pipe face and right pipe face is respectively arc surface one and arc surface two, the intersection of the bottom in described lower pipe face and left pipe face and right pipe face is respectively arc surface three and arc surface four.
4. the lower beam pipe of a kind of bicycle according to claim 3, is characterized in that: the radius of described arc surface one and arc surface two is 4.5-5.5mm, and the radius of described arc surface three and arc surface four is 6-9mm.
5. the lower beam pipe of a kind of bicycle according to claim 1, is characterized in that: the intersection in described reinforced rib and upper pipe face is respectively arc surface five and arc surface six, and the intersection in described reinforced rib and lower pipe face is respectively arc surface seven and arc surface eight.
6. the lower beam pipe of a kind of bicycle according to claim 5, is characterized in that: the radius of described arc surface five, arc surface six, arc surface seven and arc surface eight is 1.8-2.2mm.
7. the lower beam pipe of a kind of bicycle according to claim 1, is characterized in that: the thickness in described upper pipe face is 2-3mm, and the thickness in described lower pipe face is 2.5-3.5mm.
8. the lower beam pipe of a kind of bicycle according to claim 1, is characterized in that: the thickness of described reinforced rib is 1.8-2.2mm.
9. the lower beam pipe of a kind of bicycle according to claim 1, is characterized in that: the height a of described lower beam pipe body is 68-72mm, and the width b of described lower beam pipe body is 33-36mm.
10. the lower beam pipe of a kind of bicycle according to any one of claim 1-9, is characterized in that: the material of described lower beam pipe body and reinforced rib is aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690623.0A CN105292354A (en) | 2015-10-22 | 2015-10-22 | Lower beam pipe of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690623.0A CN105292354A (en) | 2015-10-22 | 2015-10-22 | Lower beam pipe of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105292354A true CN105292354A (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510690623.0A Pending CN105292354A (en) | 2015-10-22 | 2015-10-22 | Lower beam pipe of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105292354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501932A (en) * | 2018-09-30 | 2019-03-22 | 天津达福思科技有限公司 | A kind of frame structure of electric bicycle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183954Y (en) * | 1994-02-04 | 1994-11-30 | 白清栋 | Bicycle frame tube strengthening structure |
| CN101367404A (en) * | 2008-09-16 | 2009-02-18 | 江苏大红成莱宝驰机车制造有限公司 | Four-wheel mini car frame |
| CN201784643U (en) * | 2010-08-27 | 2011-04-06 | 中山乐美达日用制品有限公司 | Reinforcing tube baby carriage |
| EP2474464A1 (en) * | 2011-01-10 | 2012-07-11 | J.D Components Co., Ltd. | Method of manufacturing frame tube and structure of the frame tube made therefrom |
| CN203461033U (en) * | 2013-07-31 | 2014-03-05 | 天津金轮自行车集团有限公司 | Novel bicycle frame |
| CN205131521U (en) * | 2015-10-22 | 2016-04-06 | 天津市佳世通金属制品有限公司 | Underbeam pipe of bicycle |
-
2015
- 2015-10-22 CN CN201510690623.0A patent/CN105292354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183954Y (en) * | 1994-02-04 | 1994-11-30 | 白清栋 | Bicycle frame tube strengthening structure |
| CN101367404A (en) * | 2008-09-16 | 2009-02-18 | 江苏大红成莱宝驰机车制造有限公司 | Four-wheel mini car frame |
| CN201784643U (en) * | 2010-08-27 | 2011-04-06 | 中山乐美达日用制品有限公司 | Reinforcing tube baby carriage |
| EP2474464A1 (en) * | 2011-01-10 | 2012-07-11 | J.D Components Co., Ltd. | Method of manufacturing frame tube and structure of the frame tube made therefrom |
| CN203461033U (en) * | 2013-07-31 | 2014-03-05 | 天津金轮自行车集团有限公司 | Novel bicycle frame |
| CN205131521U (en) * | 2015-10-22 | 2016-04-06 | 天津市佳世通金属制品有限公司 | Underbeam pipe of bicycle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501932A (en) * | 2018-09-30 | 2019-03-22 | 天津达福思科技有限公司 | A kind of frame structure of electric bicycle |
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Application publication date: 20160203 |