CN202789896U - Easy installation type external spline - Google Patents
Easy installation type external spline Download PDFInfo
- Publication number
- CN202789896U CN202789896U CN201220438610.6U CN201220438610U CN202789896U CN 202789896 U CN202789896 U CN 202789896U CN 201220438610 U CN201220438610 U CN 201220438610U CN 202789896 U CN202789896 U CN 202789896U
- Authority
- CN
- China
- Prior art keywords
- key tooth
- external splines
- tooth body
- type external
- guide way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides an easy installation type external spline which belongs to the technical field of machinery, and is used for solving the technical problems that the existing external spline is difficult to install, is easy to crush, has a short service life and the like. The easy installation type external spline is matched with a corresponding internal spline and comprises a shaft body and a plurality of key teeth which are formed in the way that a peripheral surface of the shaft body extends outwards; and each key tooth comprises a key tooth body and a guide body which is positioned on an insertion end of the external spline and is connected with the key tooth body, wherein the axial cross section of each body is smaller than the axial cross section of the key tooth body. The easy installation type external spline has the advantages of easiness in assembly, difficulty in crushing, good stability, long service life and the like.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of easy mounting type external splines.
Background technique
Spline joint is comprised of internal spline and external splines.Inside and outside spline is multiple tooth part, is the development of flat key on number.Be connected relatively with flat key, spline joint has very large advantage in intensity, technique and use.Because directly and equably making more tooth and groove on the axle with on the hub bore, be solidly connected stressed comparatively even; Because groove is more shallow, tooth root place stress is concentrated less, and the strength reduction of axle and hub is less; Spline tooth number is more, and total surface of contact is larger, thereby can bear larger load; The centering of parts on shaft and axle is good, and steering capability is good.Vertical many advantages of spline are widely used in the mechanical connection spline.
Yet, the existing spline that is applied to interference fit, easy and the internal spline key tooth formation extruding of external splines key tooth in press-fiting process, make the key tooth pressure burst, be out of shape, so just cause the spline load distribution unequal easily, make key toothed portion position carry cross heavy load, the spline poor work stability, damage easily, working life is short, even threatens people's safety.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for existing technology, and a kind of easy mounting type external splines is provided, and technical problem to be solved in the utility model is to make the installation of external splines more smooth.
The purpose of this utility model can realize by following technical proposal: a kind of easy mounting type external splines, and itself and corresponding internal spline match, and described external splines comprises the key tooth that axis body and some outer circumferential faces by axis body stretch out and form; Described key tooth comprises key tooth body and the guide way that is positioned at the external splines insertion end and is connected with key tooth body, the section area that the section area on described guide way is axial makes progress less than key tooth body shaft.
External splines and internal spline are in assembly process, because the external splines insertion end has guide way, the axial cross section of the end of guide way is long-pending less, so the insertion end of external splines can be inserted internal spline very like a cork.The again leading role by guide way, make key tooth body can insert very accurately internal spline, so just avoided external splines in assembly process by conquassation, guaranteed that external splines assembles smoothly, also guaranteed the stability that external splines and internal spline cooperate, long service life.
In above-mentioned a kind of easy mounting type external splines, described key tooth extending axially and circumferentially equidistantly arranging along it along axis body.
In above-mentioned a kind of easy mounting type external splines, described guide way is stepped and have joint and an axially extended guide portion, described joint smooth connection guide portion and key tooth body; Section area on described joint is axial is reduced gradually by nearly key tooth body end to key tooth body end far away.Guide portion can be inserted internal spline smoothly, has also played simultaneously position-limiting action, the positional deviation when joint can be corrected external splines and just inserted, and this physical efficiency of key tooth matches with internal spline smoothly and accurately.
In above-mentioned a kind of easy mounting type external splines, the outer side surface of described joint tilt to extend or is arcuation.
In above-mentioned a kind of easy mounting type external splines, the section area of described guide way on axially reduced to key tooth body end far away gradually by nearly key tooth body end, the outer side surface of described guide way tilt to extend or be arcuation and with the outer circumferential face smooth connection of key tooth body.What can make like this that guide way can be mild is transitioned into key tooth body, and the external splines assembling is more laborsaving.
Compared with prior art, the utility model is processed with guide way in the insertion end of external splines, and external splines can be assembled on the internal spline smoothly, the good stability of assembling is difficult for deforming, the phenomenon such as conquassation, and the key tooth is stressed evenly, long service life, and safe and reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model in embodiment one.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the structural representation of the utility model in embodiment two.
Fig. 4 is the B-B view of Fig. 3.
Among the figure, 1, axis body; 2, key tooth; 21, key tooth body; 22, guide way; 221, guide portion; 222, joint.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one
As shown in Figure 1 and Figure 2, a kind of easy mounting type external splines, itself and corresponding internal spline match.This external splines comprises axis body 1 and some key teeth 2, and key tooth 2 comprises key tooth body 21 and guide way 22.
External splines and internal spline are in assembly process, because the insertion end of external splines has guide way 22, the axial cross section area of the insertion end of guide way 22 is less, so the insertion end of external splines can be inserted internal spline very like a cork.Pass through again the leading role of guide way 22, make key tooth body 21 can insert very accurately internal spline, so just avoided external splines in assembly process by conquassation, guaranteed that external splines assembles smoothly, also guaranteed the stability that external splines and internal spline cooperate, long service life.
Embodiment two
See also Fig. 3 and Fig. 4, the structural principle of present embodiment is basic identical with embodiment one, different place is: guide way 22 section area on is axially reduced to key tooth body 21 ends far away gradually by nearly key tooth body 21 ends, the outer side surface of guide way 22 tilt to extend or be arcuation and with the outer circumferential face smooth connection of key tooth body 21.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. easy mounting type external splines, itself and corresponding internal spline match, and described external splines comprises the key tooth (2) that axis body (1) and some outer circumferential faces by axis body (1) stretch out and form; It is characterized in that, described key tooth (2) comprises key tooth body (21) and the guide way (22) that is positioned at the external splines insertion end and is connected with key tooth body (21), the section area on the section area on described guide way (22) is axial is axial less than key tooth body (21).
2. a kind of easy mounting type external splines according to claim 1 is characterized in that, described key tooth (2) extending axially and circumferentially equidistantly arranging along it along axis body (1).
3. a kind of easy mounting type external splines according to claim 1 and 2, it is characterized in that, described guide way (22) is stepped and have joint (222) and an axially extended guide portion (221), described joint (222) smooth connection guide portion (221) and key tooth body (21); Section area on described joint (222) is axial is reduced gradually by nearly key tooth body (21) end to key tooth body (21) end far away.
4. a kind of easy mounting type external splines according to claim 3 is characterized in that, the outer side surface of described joint (222) tilts to extend or is arcuation.
5. a kind of easy mounting type external splines according to claim 1 and 2, it is characterized in that, the section area of described guide way (22) on axially reduced to key tooth body (21) end far away gradually by nearly key tooth body (21) end, the outer side surface of described guide way (22) tilt to extend or be arcuation and with the outer circumferential face smooth connection of key tooth body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438610.6U CN202789896U (en) | 2012-08-30 | 2012-08-30 | Easy installation type external spline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438610.6U CN202789896U (en) | 2012-08-30 | 2012-08-30 | Easy installation type external spline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789896U true CN202789896U (en) | 2013-03-13 |
Family
ID=47817162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220438610.6U Expired - Lifetime CN202789896U (en) | 2012-08-30 | 2012-08-30 | Easy installation type external spline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789896U (en) |
-
2012
- 2012-08-30 CN CN201220438610.6U patent/CN202789896U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG GEELY TRANSMISSION CO.,LTD. Assignor: Zhejiang Geely Automobile Research Institute Co.,Ltd. Hangzhou Branch|ZHEJIANG GEELY AUTOMOBILE RESEARCH INSTITUTE Co.,Ltd.|ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Contract record no.: 2014330000125 Denomination of utility model: Easy installation type external spline Granted publication date: 20130313 License type: Exclusive License Record date: 20140505 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |