CN204267649U - Gearbox driving gear - Google Patents
Gearbox driving gear Download PDFInfo
- Publication number
- CN204267649U CN204267649U CN201420641451.9U CN201420641451U CN204267649U CN 204267649 U CN204267649 U CN 204267649U CN 201420641451 U CN201420641451 U CN 201420641451U CN 204267649 U CN204267649 U CN 204267649U
- Authority
- CN
- China
- Prior art keywords
- gear
- driving gear
- teeth
- face
- external splines
- 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 - Fee Related
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Abstract
The utility model discloses a kind of gearbox driving gear, comprise gear, the center of described gear is provided with central through bore, and one end of the periphery wall of described gear is provided with driving gear, the other end is provided with external splines, and all spline tooths of described external splines are all set to teeth; The direction that the width of described teeth points to described driving gear along described external splines reduces gradually, and the end face of described teeth is provided with the arc envelope face formed by circular arc chamfering.Gearbox driving gear of the present utility model, by arranging teeth in the end of external splines driving gear dorsad, can effectively avoid between driving gear and engaging sleeve out of supply; By arranging arc envelope face at the end face of teeth, make the gear teeth of engaging sleeve along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, namely make engage a gear operate more smooth-going.
Description
Technical field
The utility model belongs to technical field of mechanical transmission, is specifically related to a kind of gearbox driving gear.
Background technique
Gearbox is made up of gear and axle, and produce variable-speed torque-converting by different Gear combination, its function mainly contains: 1, change velocity ratio; 2, in the constant situation of hand engine rotation, automobile can be fallen back traveling; 3, utilize neutral, interrupt transmission of power, to start to enable motor, idling, and be convenient to shifting of transmission or carry out Power output.
Gearbox driving gear generally comprises driving gear and external splines, and the external splines of existing gearbox driving gear, when engaging with engaging sleeve, often exists and collides with and the phenomenon such as bite, causes gearbox shifting to operate irregularity, affects the performance of gearbox; In addition, after external splines engages with engaging sleeve engage a gear, also there is defect easily out of supply.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of gearbox driving gear, not only more smooth-going during engage a gear, and can effectively avoid out of supply.
For achieving the above object, the utility model provides following technological scheme:
A kind of gearbox driving gear, comprise gear, the center of described gear is provided with central through bore, and one end of the periphery wall of described gear is provided with driving gear, the other end is provided with external splines, and all spline tooths of described external splines are all set to teeth; The direction that the width of described teeth points to described driving gear along described external splines reduces gradually, and the end face of described teeth described driving gear is dorsad provided with the arc envelope face formed by circular arc chamfering.
Further, described teeth is arranged axisymmetricly.
Further, described teeth symmetry plane is fallen in and angle between the dual-side in the cross section intercepted on corresponding described teeth with the plane of the axis being parallel of described gear is 4 °.
Further, the external diameter in described arc envelope face reduces gradually along the radially outer direction of described gear.
Further, the symmetrical line in described arc envelope face is in the oblique line tilted relative to described gear axis.
Further, the angle between the symmetrical line in described arc envelope face and described gear axis is 80 °.
Further, in described arc envelope face, the center of circle of all circular arcs is all dropped on on the straight line of the axes normal of described gear.
Further, the end face that described gear is positioned at side, described driving gear place is provided with the end face oil groove communicated with described central through bore, and the periphery wall of the described gear between described driving gear and external splines is provided with the radial direction oil hole of leading to described central through bore.
The beneficial effects of the utility model are:
Gearbox driving gear of the present utility model, by the spline tooth of external splines is set to teeth, after driving gear engages with engaging sleeve, due to the existence of this teeth, effectively can avoid between driving gear and engaging sleeve out of supply, make gearbox performance more stable; By arranging arc envelope face at the end face of teeth, when external splines engages with engaging sleeve, due to the existence in this arc envelope face, even if touch between the spline tooth of external splines and the gear teeth of engaging sleeve, arc envelope face also can produce a tangent line component, make the gear teeth of engaging sleeve along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, namely make engage a gear operate more smooth-going.
Accompanying drawing explanation
In order to make the purpose of this utility model, technological scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the structural representation of the utility model gearbox driving gear embodiment;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the A detail drawing of Fig. 1;
Fig. 4 is the B direction view of Fig. 3;
Fig. 5 is the C-C sectional drawing of Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, be the structural representation of the utility model gearbox driving gear embodiment.The gearbox driving gear of the present embodiment, comprise gear 1, the center of described gear 1 is provided with central through bore 2, and one end of the periphery wall of described gear 1 is provided with driving gear 3, the other end is provided with external splines 4, and all spline tooths of described external splines 4 are all set to teeth 5.The direction that the width of described teeth 5 points to driving gear 3 along external splines 4 reduces gradually, and the end face of described teeth 5 driving gear 3 is dorsad provided with the arc envelope face 6 formed by circular arc chamfering.
Further, the teeth 5 of the present embodiment is arranged axisymmetricly, and the symmetry plane of spline tooth is the plane at gear 1 axis and this spline tooth Topland center line place.Concrete, angle α between the bus of teeth 5 and the axisymmetric face of this teeth 5 is 2 °, namely the angle perpendicular to spline tooth symmetry plane and between the dual-side of arbitrary section that intercepts on corresponding teeth of the plane being parallel to gear 1 axis is 4 °, can effectively avoid out of supply.
Further, the external diameter in arc envelope face 6 reduces gradually along the described radially outer direction of gear 1, the symmetrical line in the arc envelope face 6 of the present embodiment is in the oblique line tilted relative to described gear 1 axis, and the angle β between the symmetrical line in arc envelope face 6 and described gear 1 axis is 80 °, in arc envelope face 6, the center of circle of all circular arcs is all dropped on on the straight line of the axes normal of described gear 1, adopt the arc envelope face of this structure, engage a gear can be made smooth-going.
Further, the end face that gear 1 is positioned at side, described driving gear 3 place is provided with the end face oil groove 7 communicated with described central through bore 2, the periphery wall of the described gear 1 between driving gear 3 and external splines 4 is provided with the radial direction oil hole 8 of leading to described central through bore 2, by arranging end face oil groove 7 and radial direction oil hole 8, lubricant oil can be enable fully to enter central through bore 2, to improve the greasy property between gear 1 and gear shaft, reduce wear.
The driving gear of the present embodiment is the cylindrical gears of modulus m=3, tooth number Z=31, and external splines is modulus m=2, the involute splines of tooth number Z=31, and the surface of gear is provided with the carburizing and quenching layer that the degree of depth is 0.8-1.2mm, effectively can strengthen surface property.
The gearbox driving gear of the present embodiment, by the spline tooth of external splines is set to teeth, after driving gear engages with engaging sleeve, due to the existence of this teeth, effectively can avoid between driving gear and engaging sleeve out of supply, make gearbox performance more stable; By arranging arc envelope face at the end face of teeth, when external splines engages with engaging sleeve, due to the existence in this arc envelope face, even if touch between the spline tooth of external splines and the gear teeth of engaging sleeve, arc envelope face also can produce a tangent line component, make the gear teeth of engaging sleeve along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, namely make engage a gear operate more smooth-going.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (8)
1. a gearbox driving gear, comprise gear, the center of described gear is provided with central through bore, and one end of the periphery wall of described gear is provided with driving gear, the other end is provided with external splines, it is characterized in that: all spline tooths of described external splines are all set to teeth; The direction that the width of described teeth points to described driving gear along described external splines reduces gradually, and the end face of described teeth described driving gear is dorsad provided with the arc envelope face formed by circular arc chamfering.
2. gearbox driving gear according to claim 1, is characterized in that: described teeth is arranged axisymmetricly.
3. gearbox driving gear according to claim 2, is characterized in that: fall in described teeth symmetry plane and angle between the dual-side in the cross section intercepted on corresponding described teeth with the plane of the axis being parallel of described gear is 4 °.
4. gearbox driving gear according to claim 1, is characterized in that: the external diameter in described arc envelope face reduces gradually along the radially outer direction of described gear.
5. gearbox driving gear according to claim 4, is characterized in that: the symmetrical line in described arc envelope face is in the oblique line tilted relative to described gear axis.
6. gearbox driving gear according to claim 5, is characterized in that: the angle between the symmetrical line in described arc envelope face and described gear axis is 80 °.
7. gearbox driving gear according to claim 1, is characterized in that: in described arc envelope face, the center of circle of all circular arcs is all dropped on on the straight line of the axes normal of described gear.
8. the gearbox driving gear according to any one of claim 1-7, it is characterized in that: the end face that described gear is positioned at side, described driving gear place is provided with the end face oil groove communicated with described central through bore, and the periphery wall of the described gear between described driving gear and external splines is provided with the radial direction oil hole of leading to described central through bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641451.9U CN204267649U (en) | 2014-10-31 | 2014-10-31 | Gearbox driving gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641451.9U CN204267649U (en) | 2014-10-31 | 2014-10-31 | Gearbox driving gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267649U true CN204267649U (en) | 2015-04-15 |
Family
ID=52802520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420641451.9U Expired - Fee Related CN204267649U (en) | 2014-10-31 | 2014-10-31 | Gearbox driving gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678330A (en) * | 2015-11-05 | 2017-05-17 | 重庆克诺斯齿轮制造有限公司 | Gear-shifting intermediate shaft of tractor gearbox |
| CN106812778A (en) * | 2015-11-27 | 2017-06-09 | 重庆康田齿轮有限公司 | Gearbox active bevel pinion shaft |
-
2014
- 2014-10-31 CN CN201420641451.9U patent/CN204267649U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678330A (en) * | 2015-11-05 | 2017-05-17 | 重庆克诺斯齿轮制造有限公司 | Gear-shifting intermediate shaft of tractor gearbox |
| CN106812778A (en) * | 2015-11-27 | 2017-06-09 | 重庆康田齿轮有限公司 | Gearbox active bevel pinion shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |