CN109895919B - Bowl group of bicycle axle core system - Google Patents
Bowl group of bicycle axle core system Download PDFInfo
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- CN109895919B CN109895919B CN201910276188.5A CN201910276188A CN109895919B CN 109895919 B CN109895919 B CN 109895919B CN 201910276188 A CN201910276188 A CN 201910276188A CN 109895919 B CN109895919 B CN 109895919B
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- bowl group
- main body
- bowl
- core system
- group main
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- 238000003754 machining Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Axle Suspensions And Sidecars For Cycles (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The bowl group of the axle core system of the bicycle comprises a center axle, a center tube arranged outside the center axle, bearings positioned at two sides of the center tube and a bowl group positioned at the outer side of the bearings, wherein the bowl group comprises a bowl group main body and a side cover, the bowl group main body and the bearings are in clearance fit, threads are machined on the outer wall of the bowl group main body, when the axle core system is installed on a bicycle frame, the bowl group main body is clamped with the outer circle of the bearings through radial deformation, interference fit is realized, an annular sinking groove is machined in the middle of the side cover, and an outer clamping groove and an inner clamping groove are also machined on the side cover; the bowl group main body and the bearing are assembled in a clearance way, the bearing is very labor-saving, when the shaft core system is screwed on the frame, the bowl group main body is deformed radially to realize interference with the bearing, the bearing plays a rolling role, the middle part of the side cover is provided with a sinking groove for placing the anti-lip sealing ring, the side cover is provided with an outer clamping groove and an inner clamping groove, and the side cover acts on the outer clamping groove or the inner clamping groove through a special tool to facilitate screwing of the side cover on the frame.
Description
Technical Field
The invention relates to a bowl group of a bicycle axle core system.
Background
FIG. 4 shows a bicycle axle center system comprising a center axle, a center tube sleeved outside the center axle, bearings positioned on both sides of the center tube, bowl sets positioned outside the bearings, the bowl sets being screwed onto the frame by threads machined thereon, the bowl sets requiring special tools for screwing the frame due to the very compact assembly of the axle center system, the inconvenience of the rotation of the bowl sets, in addition, the ease of water entering the bearings through the bowl sets, affecting the rotational performance of the bearings, the general interference fit between the bowl sets and the rolling bearings, and the inconvenience of the installation.
Disclosure of Invention
In response to the deficiencies in the prior art, the present invention provides a bowl assembly for a bicycle axle center system.
In order to achieve the above purpose, the invention provides a bowl group of a bicycle axle core system, the axle core system comprises a center axle, a center tube arranged outside the center axle, bearings arranged on two sides of the center tube, and a bowl group arranged outside the bearings, the bowl group comprises a bowl group main body in a thin-wall shape and a side cover arranged on one side of the bowl group main body, the bowl group main body and the bearings are in clearance fit, threads are machined on the outer wall of the bowl group main body, when the axle core system is installed on a bicycle frame, the bowl group main body is clamped with the outer circle of the bearings through radial deformation to realize interference assembly, an annular sinking groove is machined in the middle of the side cover, and an outer clamping groove and an inner clamping groove are also machined on the side cover.
As a further improvement of the invention, the outer circle of the bearing has a size of 30mm.
As a further improvement of the invention, the dimension of the inner wall surface of the bowl group main body is 30.2mm, and the machining precision is plus or minus 0.02mm.
As a further improvement of the invention, the outer wall surface of the bowl pack body is 1.37 inches in size, the outer wall surface is provided with english threads, and the number of threads in 1 inch is 24.
As a further improvement of the invention, the included angle between the threads is 55 degrees.
As a further improvement of the invention, the total of eight outer clamping grooves are uniformly distributed on the outer circumference of the side cover, and the outer clamping grooves do not penetrate through the side cover.
As a further improvement of the invention, twenty inner clamping grooves are uniformly distributed on the inner circumference of the side cover.
As a further improvement of the invention, the outer teeth of the threads on the bowl group body are provided with a taper of 1 degree, and the inner hole of the bowl group body is provided with a chamfer with a radius of 1 mm.
The beneficial effects of the invention are as follows:
1. the bowl group main body and the bearing are assembled in a clearance way, the bearing is very labor-saving to be installed in the bowl group main body, when the shaft core system is screwed on the frame, the external thread of the bowl group main body is screwed on the internal thread of the frame of the bicycle, the thin wall of the bowl group main body is deformed through the inclined thrust action between the threads, the bowl group main body is in interference fit with the outer ring of the bearing through radial deformation, the outer diameter of the bearing is prevented from running when the bearing works, and the bearing plays a role in rolling;
2. the middle part of the side cover is provided with a sinking groove for placing the anti-lip type sealing ring, so that water and other sundries can be effectively prevented from entering the shaft core, and a good working environment of the bearing is ensured;
3. the side cover is provided with an outer clamping groove and an inner clamping groove, and different special tools are used for acting on the outer clamping groove or the inner clamping groove, so that the side cover is conveniently screwed on the frame, and the universality is further improved;
4. the outer clamping groove does not penetrate through the side cover, and the special tool cannot damage threads of the bowl group main body in the process of screwing the bowl group through the outer clamping groove.
5. The inner hole of bowl group main part processes the chamfer, has effectively avoided the concentration of stress, and the tapering is processed to the outer tooth of bowl group main part screw thread, makes things convenient for bowl group to spin on the bicycle frame.
Drawings
FIG. 1 is a perspective view of a bowl assembly of a bicycle axle core system of the present invention;
FIG. 2 is a side view of the bowl assembly;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is an assembled schematic view of the mandrel system;
FIG. 5 is a disassembled view of FIG. 4;
FIG. 6 is an enlarged view of the position A of FIG. 2;
fig. 7 is an enlarged view of the position B in fig. 6.
In the figure: 1. a bowl group; 11. a bowl group main body; 111. an outer tooth; 112. chamfering; 12. a side cover; 121. sinking grooves; 122. an inner clamping groove; 123. an outer clamping groove; 2. a bearing; 3. a middle tube; 4. a central shaft.
Detailed Description
As shown in fig. 1, a bowl group of a bicycle axle core system according to an embodiment of the present invention includes a central axle 4, a central tube 3 disposed outside the central axle 4, bearings 2 disposed at both sides of the central tube 3, and a bowl group 1 disposed outside the bearings 2 (see fig. 4 and 5); the bowl group 1 comprises a bowl group main body 11 with a thin wall shape and a side cover 12 positioned at one side of the bowl group main body 11, the bowl group main body 11 and the bearing 2 are in clearance fit, threads are processed on the outer wall of the bowl group main body 11, when the axle core system is arranged on a bicycle frame, the bowl group main body 11 is tightly clamped with the outer circle of the bearing 2 through radial deformation, interference fit is realized, an annular sinking groove 121 is processed in the middle of the side cover 12, and an outer clamping groove 123 and an inner clamping groove 122 are also processed on the side cover 12; the size of the outer circle of the bearing 2 is 30mm, the size of the inner wall surface of the bowl group main body 11 is 30.2mm, the machining precision is plus or minus 0.02mm, the size of the outer wall surface of the bowl group main body 11 is 1.37 inches, the outer wall surface is provided with English threads, the number of threads in 1 inch is 24, the included angle between the threads of the threads is 55 degrees, eight outer clamping grooves 123 are uniformly distributed on the outer circumference of the side cover 12, the outer clamping grooves 123 do not penetrate the side cover 12, twenty inner clamping grooves 122 are uniformly distributed on the inner circumference of the side cover 12; the outer teeth 111 of the threads on the bowl pack body 11 have a taper of 1 degree, and the inner bore of the bowl pack body 11 has a chamfer 112 with a radius of 1mm (see fig. 6, 7).
The bowl group main body and the bearing are assembled in a clearance way, the bearing is very labor-saving to be installed in the bowl group main body, when the shaft core system is screwed on the frame, the external thread of the bowl group main body is screwed on the internal thread of the frame of the bicycle, the thin wall of the bowl group main body is deformed through the inclined thrust action between the threads, the bowl group main body is in interference fit with the outer ring of the bearing through radial deformation, the outer diameter of the bearing is prevented from running when the bearing works, and the bearing plays a role in rolling; the middle part of the side cover is provided with a sinking groove for placing the anti-lip type sealing ring, so that water and other sundries can be effectively prevented from entering the shaft core, and a good working environment of the bearing is ensured; the side cover is provided with an outer clamping groove and an inner clamping groove, and different special tools are used for acting on the outer clamping groove or the inner clamping groove, so that the side cover is conveniently screwed on the frame, and the universality is further improved; the outer clamping groove does not penetrate through the side cover, and the special tool cannot damage threads of the bowl group main body in the process of screwing the bowl group through the outer clamping groove.
The inner hole of bowl group main part processes the chamfer, has effectively avoided the concentration of stress, and when the external screw thread screw in of bowl group main part was to the frame internal screw thread department of bicycle simultaneously, the thin wall of bowl group main part warp, and the hole passes through the fillet transition, and this position is difficult for taking place to warp, and is firm and durable more after the bearing installation. The outer teeth of the threads of the bowl group main body are tapered, so that the bowl group can be conveniently screwed on the bicycle frame, and the outer teeth of the threads are reduced in size, thereby being beneficial to screwing of the threads.
When in specific use, the invention is described with reference to the drawings for convenient understanding;
the size of the inner wall surface of the bowl group main body 11 is 30.2mm, which is larger than the size of the outer circle of the bearing 2 by 30mm, the bearing can be easily installed in the bowl group main body in a clearance fit manner, the size of the outer wall surface of the bowl group main body 11 is 1.37 inches (34.798 mm), the maximum thickness of the bowl group main body is less than 2.5mm, the bowl group main body is flaky and easy to deform, when the bowl group main body is screwed on a frame through threads, the internal threads on the frame and the external threads of the bowl group main body are mutually extruded and deformed, the radial deformation of the bowl group main body and the outer circle of the bearing are tightly clamped, the interference fit of the bowl group main body and the bearing is realized, and the bearing plays a role in rolling instead of sliding in actual work;
referring to fig. 4, in the assembly diagram of the shaft core system, the bowl group has the effect of fixing the whole shaft core and the frame, ensuring that the central shaft can rotate relatively freely, processing an inner clamping groove and an outer clamping groove on the side cover of the bowl group, realizing the rotation of the bowl group by two corresponding matched tools, having good universality, processing an annular sinking groove on the middle part of the side cover, being used for placing an anti-lip type sealing ring, being used for placing water and sundries into the shaft core, and effectively avoiding the damage to the internal structure of the shaft core from the outside.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a bowl group of bicycle axle core system, axle core system includes a axis (4), arranges in well pipe (3) outside axis (4), be located in bearing (2) of well pipe (3) both sides, be located bowl group (1) in bearing (2) outside, its characterized in that: the bowl group (1) comprises a bowl group main body (11) with a thin wall shape and a side cover (12) positioned on one side of the bowl group main body (11), the bowl group main body (11) is in clearance fit with the bearing (2), threads are machined on the outer wall of the bowl group main body (11), when the axle core system is installed on a bicycle frame, the bowl group main body (11) is tightly clamped with the outer circle of the bearing (2) through radial deformation, interference assembly is achieved, an annular sinking groove (121) is machined in the middle of the side cover (12), and an outer clamping groove (123) and an inner clamping groove (122) are machined in the side cover (12).
2. A bowl assembly for a bicycle axle core system as defined in claim 1, wherein: the outer circle of the bearing (2) is 30mm in size.
3. A bowl assembly for a bicycle axle core system as defined in claim 1, wherein: the size of the inner wall surface of the bowl group main body (11) is 30.2mm, and the machining precision is plus or minus 0.02mm.
4. A bowl assembly for a bicycle axle core system as defined in claim 3, wherein: the outer wall surface of the bowl group main body (11) is 1.37 inches in size, the outer wall surface is provided with English threads, and the number of threads in 1 inch is 24.
5. The bowl assembly of a bicycle axle core system of claim 4, wherein: the included angle between the threads of the threads is 55 degrees.
6. A bowl assembly for a bicycle axle core system according to any one of claims 1 to 5 wherein: the number of the outer clamping grooves (123) is eight, the outer circumferences of the side covers (12) are uniformly distributed, and the outer clamping grooves (123) do not penetrate through the side covers (12).
7. A bowl assembly for a bicycle axle core system according to any one of claims 1 to 5 wherein: twenty inner clamping grooves (122) are uniformly distributed on the inner circumference of the side cover (12).
8. A bowl assembly for a bicycle axle core system according to any one of claims 1 to 5 wherein: the outer teeth (111) of the threads on the bowl group main body (11) are provided with a taper of 1 degree, and the inner hole of the bowl group main body (11) is provided with a chamfer (112) with a radius of 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276188.5A CN109895919B (en) | 2019-04-08 | 2019-04-08 | Bowl group of bicycle axle core system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276188.5A CN109895919B (en) | 2019-04-08 | 2019-04-08 | Bowl group of bicycle axle core system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109895919A CN109895919A (en) | 2019-06-18 |
| CN109895919B true CN109895919B (en) | 2024-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910276188.5A Active CN109895919B (en) | 2019-04-08 | 2019-04-08 | Bowl group of bicycle axle core system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109895919B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205345252U (en) * | 2016-01-13 | 2016-06-29 | 杭州云造科技有限公司 | Bowl group's structure and bicycle |
| CN207389426U (en) * | 2017-11-01 | 2018-05-22 | 宁波恒隆车业有限公司 | A kind of bicycle five-bowel set device |
| CN210027767U (en) * | 2019-04-08 | 2020-02-07 | 慈溪市肯力中轴有限公司 | Bowl group of bicycle axle core system |
-
2019
- 2019-04-08 CN CN201910276188.5A patent/CN109895919B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205345252U (en) * | 2016-01-13 | 2016-06-29 | 杭州云造科技有限公司 | Bowl group's structure and bicycle |
| CN207389426U (en) * | 2017-11-01 | 2018-05-22 | 宁波恒隆车业有限公司 | A kind of bicycle five-bowel set device |
| CN210027767U (en) * | 2019-04-08 | 2020-02-07 | 慈溪市肯力中轴有限公司 | Bowl group of bicycle axle core system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109895919A (en) | 2019-06-18 |
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