CN205311813U - Novel high strength chain wheel subassembly - Google Patents
Novel high strength chain wheel subassembly Download PDFInfo
- Publication number
- CN205311813U CN205311813U CN201521088081.1U CN201521088081U CN205311813U CN 205311813 U CN205311813 U CN 205311813U CN 201521088081 U CN201521088081 U CN 201521088081U CN 205311813 U CN205311813 U CN 205311813U
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- axis
- chain wheel
- external splines
- subassembly
- utility
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Abstract
The utility model discloses a novel high strength chain wheel subassembly, include the axis and connect respectively at centraxonial right crank subassembly and the left crank subassembly of controlling both ends, the right crank subassembly has the chain wheel, the axis is hollow structure, centraxonial left end outer peripheral face is provided with the external splines, left crank subassembly with the axis junction has the staple bolt structure, staple bolt structure inner peripheral surface be provided with with external splines complex internal spline, the left end face of left side crank subassembly is provided with locking screw, the tooth root portion of external splines with centraxonial axial plane passes through the indent arc wall and connects, the tooth top portion of internal spline be with indent arc wall complex evagination arc portion. The utility model discloses an improvement type spline struvture makes the stress surface atress between left crank subassembly and the axis even, prevents that the key warp, guarantees the stability of key -type connection.
Description
Technical field
This utility model relates to chain wheel field, particularly to a kind of novel high-strength chain wheel assembly.
Background technology
Chain wheel assembly generally comprises axis and the right crankset part at the two ends, left and right being connected to axis and left crank assemblies, and right crankset part has chain wheel. Axis is hollow-core construction, the left end outer peripheral face of axis is provided with external splines, left crank assemblies and middle shaft connection place have hooping structure, hooping structure inner peripheral surface is provided with the internal spline coordinated with external splines, after left crank assemblies coordinates with axis, require over a lock-screw and be spun on the left side of axis, to prevent left crank assemblies to left side displacement or deviating from.
Shown in Figure 1, but the external splines that the left end outer peripheral face of current axis is arranged is conventional right-angle tooth 10, the contact point c stress between root 11 and the axial plane 12 of conventional right-angle tooth 10 when stress, this structure stress is uneven, it is easily caused conventional right-angle tooth 10 to deform, affects the stability that key connects.
Utility model content
The purpose of this utility model is in that the above-mentioned deficiency for prior art and defect, it is provided that a kind of novel high-strength chain wheel assembly, to solve the problems referred to above.
This utility model is solved the technical problem that to realize by the following technical solutions:
Novel high-strength chain wheel assembly, right crankset part and left crank assemblies including axis and the two ends, left and right being connected to axis, described right crankset part has chain wheel, described axis is hollow-core construction, the left end outer peripheral face of described axis is provided with external splines, left crank assemblies and described middle shaft connection place have hooping structure, described hooping structure inner peripheral surface is provided with the internal spline coordinated with external splines, the left side of described left crank assemblies is provided with lock-screw, it is characterized in that, the root portion of described external splines is connected by indent arcuate groove with the axial plane of described axis, the tooth crest of described internal spline is and the outer convex curvilinear of described indent arc slot fit.
Owing to have employed technical scheme as above, modified form spline structure of the present utility model makes the stress surface uniform force between left crank assemblies and axis, and anti-key deforms, it is ensured that the stability that key connects.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the left view of the axis of prior art.
Fig. 2 is the front view of a kind of embodiment of this utility model.
Fig. 3 is the side view (omission lock-screw) of Fig. 2.
Fig. 4 is the left view of the axis of a kind of embodiment of this utility model.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, this utility model is further elucidated below.
Referring to shown in Fig. 2 to Fig. 4, novel high-strength chain wheel assembly includes axis 100 and the right crankset part 200 at the two ends, left and right being connected to axis 100 and left crank assemblies 300, and right crankset part 200 has chain wheel 210. Axis 100 is hollow-core construction, the left end outer peripheral face of axis 100 is provided with external splines 110, left crank assemblies 300 has hooping structure 310 with axis 100 junction, and hooping structure 310 inner peripheral surface is provided with the internal spline 311 coordinated with external splines 110, and hooping structure 310 is locked by trip bolt 312. The left end inner peripheral surface of axis 100 is provided with female thread 102, and the left side of hooping structure 310 arranges spacing cannelure 313. The outer face of left crank assemblies 300 is additionally provided with lock-screw 400, one end of lock-screw 400 has the external screw thread 401 coordinated with female thread 102, the other end is by screwing part locking, and the other end outer peripheral face of lock-screw 400 is provided with the spacing ring limit 410 coordinated with spacing cannelure 313.
The root portion 110a of external splines 110 is connected by indent arcuate groove a with the axial plane 101 of axis 100, and the tooth crest of internal spline 311 is the outer convex curvilinear b coordinated with indent arcuate groove a. After lock-screw 400 is locked, tooth B1, B2 of the maximum both sides, bottom being of key junction stress between axis 100 and left crank assemblies 300, profile of tooth stress up is successively decreased, the stress surface uniform force between left crank assemblies 300 and axis 100 is made owing to have employed modified form spline structure, anti-key deforms, it is ensured that the stability that key connects.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described. Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model. This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (1)
1. novel high-strength chain wheel assembly, right crankset part and left crank assemblies including axis and the two ends, left and right being connected to axis, described right crankset part has chain wheel, described axis is hollow-core construction, the left end outer peripheral face of described axis is provided with external splines, left crank assemblies and described middle shaft connection place have hooping structure, described hooping structure inner peripheral surface is provided with the internal spline coordinated with external splines, the left side of described left crank assemblies is provided with lock-screw, it is characterized in that, the root portion of described external splines is connected by indent arcuate groove with the axial plane of described axis, the tooth crest of described internal spline is and the outer convex curvilinear of described indent arc slot fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088081.1U CN205311813U (en) | 2015-12-23 | 2015-12-23 | Novel high strength chain wheel subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088081.1U CN205311813U (en) | 2015-12-23 | 2015-12-23 | Novel high strength chain wheel subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205311813U true CN205311813U (en) | 2016-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521088081.1U Active CN205311813U (en) | 2015-12-23 | 2015-12-23 | Novel high strength chain wheel subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205311813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809332A (en) * | 2017-03-22 | 2017-06-09 | 武汉千斤智能科技有限公司 | A kind of bicycle spline axis and bicycle |
-
2015
- 2015-12-23 CN CN201521088081.1U patent/CN205311813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809332A (en) * | 2017-03-22 | 2017-06-09 | 武汉千斤智能科技有限公司 | A kind of bicycle spline axis and bicycle |
| CN106809332B (en) * | 2017-03-22 | 2022-09-16 | 武汉天腾动力科技有限公司 | Bicycle spline middle shaft and bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |