CN204186945U - The middle-grade driving gear of gearbox - Google Patents
The middle-grade driving gear of gearbox Download PDFInfo
- Publication number
- CN204186945U CN204186945U CN201420641631.7U CN201420641631U CN204186945U CN 204186945 U CN204186945 U CN 204186945U CN 201420641631 U CN201420641631 U CN 201420641631U CN 204186945 U CN204186945 U CN 204186945U
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- CN
- China
- Prior art keywords
- driving gear
- gear
- teeth
- external splines
- bore
- 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 the middle-grade driving gear of a kind of gearbox, comprise gear, the center of described gear is provided with central through bore, the two ends of described gear are respectively equipped with external splines and dental inlay structure, driving gear is provided with between described external splines and dental inlay structure, described driving gear is provided with boss towards one end end face of described dental inlay structure, and described boss is provided with the oilhole leading to described central through bore; All spline tooths of described external splines are all set to teeth, and the direction that the width of described teeth points to described driving gear along described external splines reduces gradually.By arranging boss on one end end face of driving gear, and the oilhole leading to central through bore being set on boss, lubricant oil can be made fully to enter in central through bore, improve lubrication; By the spline tooth of external splines is set to teeth, after driven gear engages with engaging sleeve, utilize the characteristic that teeth change width is different, can effectively avoid between driven gear and engaging sleeve out of supply.
Description
Technical field
The utility model belongs to gear transmission technology field, is specifically related to the middle-grade driving gear of a kind of gearbox.
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.
Although the middle-grade driving gear of existing gearbox can meet usage requirement to a certain extent, but still there are 2 deficiencies:
1), after middle-grade driving gear engages with engaging sleeve engage a gear, there is defect easily out of supply;
2) middle-grade driving gear rotatable engagement is sleeved on gear shaft, when middle-grade driving gear idle running, due to the lack of lubrication between middle-grade driving gear and gear shaft, can cause undue wear and larger heating.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of gearbox middle-grade driving gear, can not only prevent out of supply, and effectively can improve lubrication effect.
For achieving the above object, the utility model provides following technological scheme:
The middle-grade driving gear of a kind of gearbox, comprise gear, the center of described gear is provided with central through bore, the two ends of described gear are respectively equipped with external splines and dental inlay structure, driving gear is provided with between described external splines and dental inlay structure, described driving gear is provided with boss towards one end end face of described dental inlay structure, and described boss is provided with the oilhole leading to described central through bore; All spline tooths of described external splines are all set to teeth, and the direction that the width of described teeth points to described driving gear along described external splines reduces gradually.
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 5.5-6.5 °.
Further, the end face of described teeth described driving gear is dorsad provided with the inclined-plane tilted relative to its symmetry plane, and the angle between two described inclined-planes is 110-120 °.
Further, the center line of the described teeth end face of described driving gear is dorsad in the oblique line tilted relative to described gear axis, and the angle of described teeth dorsad between the center line of the end face of described driving gear and described gear axis is 75-85 °.
The beneficial effects of the utility model are:
The middle-grade driving gear of gearbox of the present utility model, by arranging boss on one end end face of driving gear, and arranging the oilhole leading to central through bore, lubricant oil can be made fully to enter in central through bore, improve lubrication on boss; By the spline tooth of external splines is set to teeth, after driven gear engages with engaging sleeve, utilize the characteristic that teeth change width is different, can effectively avoid between driven gear and engaging sleeve out of supply, make gearbox performance more stable.
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 middle-grade driving gear embodiment of the utility model gearbox;
Fig. 2 is the A detail drawing of Fig. 1;
Fig. 3 is the B direction view of Fig. 2.
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 middle-grade driving gear embodiment of the utility model gearbox.The middle-grade driving gear of gearbox of the present embodiment, comprise gear 1, the center of described gear 1 is provided with central through bore 2, the two ends of described gear 1 are respectively equipped with external splines 3 and dental inlay structure 4, driving gear 5 is provided with between described external splines 3 and dental inlay structure 4, described driving gear 5 is provided with boss 6 towards one end end face of described dental inlay structure 4, and described boss 6 is provided with the oilhole 7 leading to described central through bore 2.All spline tooths of described external splines 3 are all set to teeth 8, and the direction that the width of described teeth 8 points to described driving gear 5 along described external splines 3 reduces gradually.
Further, teeth 8 is arranged axisymmetricly, fall in described teeth 8 symmetry plane and angle α between the dual-side in the cross section intercepted on corresponding described teeth 8 with the plane of the axis being parallel of described gear 1 is 5.5-6.5 °, angle α between the cross section dual-side of the present embodiment is 6 °, can prevent out of supply.The angle β that the end face of teeth 8 described driving gear 5 is dorsad provided with between the described inclined-plane 9,9, two, inclined-plane that tilts relative to its symmetry plane is 110-120 °, and the angle β between two inclined-planes 9 of the present embodiment is 115 °.The center line of teeth 8 end face of described driving gear 5 is dorsad in the oblique line tilted relative to described gear 1 axis, and the angle γ of described teeth 8 dorsad between the center line of the end face of described driving gear and described gear axis is 75-85 °, the teeth 8 of the present embodiment angle γ dorsad between the center line of the end face of described driving gear and described gear axis is 82 °, and middle-grade driving gear can be enable smoothly to engage with engaging sleeve engage a gear.
The driving gear of the present embodiment is modulus m=4.5, the cylindrical gears of tooth number Z=21, external splines is the involute outer spline of modulus m=3.25, tooth number Z=17, gear is provided with the carburizing and quenching layer that the degree of depth is 0.9-1.3mm, can effectively strengthen surface strength and wear-resisting property.
The middle-grade driving gear of gearbox of the present embodiment, by arranging boss on one end end face of driving gear, and arranging the oilhole leading to central through bore, lubricant oil can be made fully to enter in central through bore, improve lubrication on boss; By the spline tooth of external splines is set to teeth, after driven gear engages with engaging sleeve, utilize the characteristic that teeth change width is different, can effectively avoid between driven gear and engaging sleeve out of supply, make gearbox performance more stable.
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 (5)
1. the middle-grade driving gear of gearbox, it is characterized in that: comprise gear, the center of described gear is provided with central through bore, the two ends of described gear are respectively equipped with external splines and dental inlay structure, driving gear is provided with between described external splines and dental inlay structure, described driving gear is provided with boss towards one end end face of described dental inlay structure, and described boss is provided with the oilhole leading to described central through bore; All spline tooths of described external splines are all set to teeth, and the direction that the width of described teeth points to described driving gear along described external splines reduces gradually.
2. the middle-grade driving gear of gearbox according to claim 1, is characterized in that: described teeth is arranged axisymmetricly.
3. the middle-grade driving gear of gearbox 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 5.5-6.5 °.
4. the middle-grade driving gear of gearbox according to claim 2, is characterized in that: the end face of described teeth described driving gear is dorsad provided with the inclined-plane tilted relative to its symmetry plane, and the angle between two described inclined-planes is 110-120 °.
5. the middle-grade driving gear of gearbox according to claim 4, it is characterized in that: the center line of the described teeth end face of described driving gear is dorsad in the oblique line tilted relative to described gear axis, and the angle of described teeth dorsad between the center line of the end face of described driving gear and described gear axis is 75-85 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641631.7U CN204186945U (en) | 2014-10-31 | 2014-10-31 | The middle-grade driving gear of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641631.7U CN204186945U (en) | 2014-10-31 | 2014-10-31 | The middle-grade driving gear of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186945U true CN204186945U (en) | 2015-03-04 |
Family
ID=52618950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420641631.7U Expired - Fee Related CN204186945U (en) | 2014-10-31 | 2014-10-31 | The middle-grade driving gear of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186945U (en) |
-
2014
- 2014-10-31 CN CN201420641631.7U patent/CN204186945U/en not_active Expired - Fee Related
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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: 20150304 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |