CN209274817U - Bicycle square opening axis - Google Patents
Bicycle square opening axis Download PDFInfo
- Publication number
- CN209274817U CN209274817U CN201821985443.0U CN201821985443U CN209274817U CN 209274817 U CN209274817 U CN 209274817U CN 201821985443 U CN201821985443 U CN 201821985443U CN 209274817 U CN209274817 U CN 209274817U
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- Prior art keywords
- square opening
- hole
- middle section
- threaded hole
- bicycle
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Abstract
A kind of bicycle of technical field of vehicle square opening axis, including the square opening end at both ends is arranged in and connects the shaft middle section of both ends square opening end, the square opening end offers threaded hole for installing crank in axial direction, the shaft middle section is less than threaded hole in the through-hole for being axially arranged with connection threaded hole, the through-hole aperture.The utility model is designed using hollow structure, can eliminate the stress concentration phenomenon of screw thread bore end, and square opening end in driving conditions is avoided to be broken and cause personal injury accidents with shaft middle section.
Description
Technical field
The utility model relates to a kind of technology of vehicular field, specifically a kind of bicycle square opening axis.
Background technique
Bicycle axis mainly has solid square opening axis and hollow spline axis at present.Large-diameter hollow spline axis is being competed
And there is greater advantage in cross-country activity, hollow structure design can offset major diameter design, and bring axis weight is overweight asks
Topic.And shaft diameter is smaller in square opening, is designed to solid construction, it is foot-operated to install crank only to open up threaded hole at solid shafting both ends；
But solid square opening axis is the phenomenon that screw thread bore end concentrates (as shown in the area Tu3Zhong A) there are stress, it is long-term foot-operated ride or
It is that external force is collided, it is understood that there may be the problem of square opening fracture causes personal injury.In the contemporary society that personal interests are increasingly paid attention to,
Personal injury problem will bring huge economic loss to company and will damage to company's fame, and the company of influence continues orderly
It manages.
Utility model content
The utility model In view of the above shortcomings of the prior art, proposes a kind of bicycle square opening axis, using sky
Core structure design, can eliminate the stress concentration phenomenon of screw thread bore end, avoid square opening end and shaft middle section in driving conditions
It is broken and causes personal injury accidents.
The utility model is achieved through the following technical solutions:
The utility model includes the square opening end that both ends are arranged in and the shaft middle section for connecting both ends square opening end, the side
Mouth end offers threaded hole in axial direction and is connected to the through-hole of threaded hole in being axially arranged with for installing crank, the shaft middle section,
The through-hole aperture is less than threaded hole.
The through-hole aperture is 6.5mm, and the nominal diameter of the threaded hole is 8mm.
The shaft middle section is equipped with spline, and the spline upper sleeve is equipped with torque deformed casing, on the torque deformed casing
It is arranged with wire-winding unit and sliding sleeve；The wire-winding unit is arranged with flux sleeve, the wire-winding unit and magnetic conduction in axial one end
Set is limited by sliding sleeve；Speed magnet ring is equipped between the shaft middle section and the wire-winding unit other end.
The wire-winding unit is equipped with moment sensing wiring board.
The torque deformed casing outer surface is equipped with magnetic conduction strip relative to flux sleeve.
Technical effect
Compared with prior art, the utility model is provided with the axis hole of perforation, and the stress for eliminating screw thread bore end is concentrated
Phenomenon, overall structure are light and handy；And it in the case where guaranteeing that square opening axis material, technique, outer dimension are constant, maintains original
Mechanical property；Furthermore it opens up and reduces interference after the axis hole of perforation, improve magnetic flux, magnetic induction intensity improves 6%, passes
It is more stable to feel signal.
Detailed description of the invention
Fig. 1 is the assembling structure schematic diagram of embodiment 1；
Fig. 2 is the sectional view of square opening axis in Fig. 1；
Fig. 3 is the schematic diagram of square opening axis in the prior art；
In figure: shaft middle section 1, square opening end 2, spline 3, threaded hole 4, through-hole 5, torque deformed casing 6, wire-winding unit 7,
Sliding sleeve 8, flux sleeve 9, speed magnet ring 10.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment includes the square opening end 2 and connection both ends square opening end 2 that both ends are arranged in
Shaft middle section 1, the square opening end 2 offer threaded hole 4 in axial direction and set for installing crank, the shaft middle section 1 in axially
There is the through-hole 5 of connection threaded hole 4, the through-hole aperture is less than threaded hole.
Preferably, the through-hole aperture is 6.5mm, and threaded hole nominal diameter is 8mm.
The shaft middle section 1 is equipped with spline 3, and moment deformed casing 6, the torque deformation set are arranged on the spline 3
Wire-winding unit 7 and sliding sleeve 8 are arranged on pipe 6；The wire-winding unit 7 is arranged with flux sleeve 9, the coiling group in axial one end
Part 7 and flux sleeve 9 are limited by sliding sleeve 8；Speed magnet ring 10 is equipped between 7 other end of the shaft middle section 1 and wire-winding unit.
The wire-winding unit 7 is equipped with moment sensing wiring board.
6 outer surface of torque deformed casing is equipped with magnetic conduction strip relative to flux sleeve 9.
The present embodiment is assemblied in built-in motor, built-in motor is applied on electric bicycle, power running can be carried out.
Interference is reduced after opening up the axis hole of perforation because of square opening axis, improves magnetic flux, and power-assisted transducing signal is more stable；With it is solid
The square opening axis of axle construction is compared, through test of many times, the average value of speed magnet ring magnetic induction intensity by 1402Gs promoted to
1486Gs improves 6%；
The prior stress concentration phenomenon for being a cancellation threaded hole end, improves the stability of total quality, avoids
Square opening end is broken with shaft middle section and is caused personal injury accidents in driving conditions.
It is emphasized that: the above is only the preferred embodiment of the present utility model, not appoints to the utility model
What formal limitation, any simple modification made by the above technical examples according to the technical essence of the present invention, etc.
With variation and modification, it is still within the scope of the technical solutions of the present invention.
Claims (5)
1. a kind of bicycle square opening axis, including being arranged in the square opening end at both ends and the shaft of connection both ends square opening end
Section, the square opening end offer threaded hole for installing crank in axial direction, which is characterized in that the shaft middle section is set in axially
There is the through-hole of connection threaded hole, the through-hole aperture is less than threaded hole.
2. bicycle square opening axis according to claim 1, characterized in that the aperture of the through-hole is 6.5mm, the screw thread
The nominal diameter in hole is 8mm.
3. bicycle square opening axis according to claim 1, characterized in that the shaft middle section is equipped with spline, the spline
On be arranged moment deformed casing, be arranged with wire-winding unit and sliding sleeve on the torque deformed casing；The wire-winding unit in
Axial one end is arranged with flux sleeve, the wire-winding unit and flux sleeve and is limited by sliding sleeve；The shaft middle section and coiling group
Speed magnet ring is equipped between the part other end.
4. bicycle square opening axis according to claim 3, characterized in that the wire-winding unit is equipped with moment sensing route
Plate.
5. bicycle square opening axis according to claim 3, characterized in that the outer surface of the torque deformed casing is opposite
Magnetic conduction strip is equipped in flux sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821985443.0U CN209274817U (en) | 2018-11-29 | 2018-11-29 | Bicycle square opening axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821985443.0U CN209274817U (en) | 2018-11-29 | 2018-11-29 | Bicycle square opening axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209274817U true CN209274817U (en) | 2019-08-20 |
Family
ID=67608722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821985443.0U Active CN209274817U (en) | 2018-11-29 | 2018-11-29 | Bicycle square opening axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209274817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109398579A (en) * | 2018-11-29 | 2019-03-01 | 八方电气(苏州)股份有限公司 | Bicycle square opening axis |
-
2018
- 2018-11-29 CN CN201821985443.0U patent/CN209274817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109398579A (en) * | 2018-11-29 | 2019-03-01 | 八方电气(苏州)股份有限公司 | Bicycle square opening axis |
| CN109398579B (en) * | 2018-11-29 | 2024-08-06 | 八方电气(苏州)股份有限公司 | Square mouth center shaft for bicycle |
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| GR01 | Patent grant |