CN204186935U - Gearbox is engage a gear engaging gear initiatively - Google Patents
Gearbox is engage a gear engaging gear initiatively Download PDFInfo
- Publication number
- CN204186935U CN204186935U CN201420641385.5U CN201420641385U CN204186935U CN 204186935 U CN204186935 U CN 204186935U CN 201420641385 U CN201420641385 U CN 201420641385U CN 204186935 U CN204186935 U CN 204186935U
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- China
- Prior art keywords
- gear
- engage
- teeth
- initiatively
- external splines
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Abstract
The utility model discloses a kind of gearbox initiatively engage a gear engaging gear, 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, the direction that the width of described teeth points to described driving gear along described external splines reduces gradually, and one end end face of described teeth described driving gear is dorsad provided with the arc envelope face formed by circular arc chamfering.Gearbox of the present utility model is engage a gear engaging gear initiatively, and not only engage a gear is smooth-going, and can prevent out of supply, effectively can also improve lubrication effect.
Description
Technical field
The utility model belongs to gear transmission technology field, is specifically related to a kind of gearbox initiatively engage a gear engaging 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.
Although existing gearbox initiatively engage a gear engaging gear can meet usage requirement to a certain extent, but still there are 2 deficiencies:
1), after initiatively engage a gear engaging gear engages with engaging sleeve engage a gear, there is defect easily out of supply;
2) when engage a gear engages, initiatively engage a gear engaging gear and tooth often exist between overlap and collide with and the phenomenon such as bite, cause the engage a gear that active engage a gear engaging gear can not be smooth-going;
3) initiatively engage a gear engaging gear rotatable engagement is sleeved on gear shaft, when middle-grade driving gear idle running, due to the lack of lubrication between active engage a gear engaging 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 initiatively engage a gear engaging gear, and not only engage a gear is smooth-going, and can prevent out of supply, effectively can also improve lubrication effect.
For achieving the above object, the utility model provides following technological scheme:
A kind of gearbox initiatively engage a gear engaging gear, 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, the direction that the width of described teeth points to described driving gear along described external splines reduces gradually, and one end 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 all equal.
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 4-7 °.
Further, the external diameter in described arc envelope face reduces gradually along the radially outer direction of described gear.
Further, seamlessly transit between described arc envelope face with the two side of corresponding described teeth.
Further, the symmetrical line in described arc envelope face is the oblique line be inclined to set relative to the axis of described gear.
Further, the angle between the symmetrical line in described arc envelope face and the axis of described gear is 80 °.
Further, in described arc envelope face, the center of circle of all circular arcs is all positioned at on the straight line of the axes normal of described gear.
The beneficial effects of the utility model are:
Gearbox of the present utility model is engage a gear engaging gear initiatively, by arranging boss on one end end face of driving gear, and on boss, arranging the oilhole leading to central through bore, 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, make gearbox performance more stable; By being provided with arc envelope face on the end face of teeth, even if touch between the spline tooth of external splines and the gear teeth of other tooth-shape structures, arc envelope face also can produce a tangent line component, make the gear teeth of other tooth-shape structures 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 active engage a gear engaging gear embodiment;
Fig. 2 is the A detail drawing of Fig. 1;
Fig. 3 is the B direction view of Fig. 2;
Fig. 4 is the C-C sectional drawing 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 utility model gearbox active engage a gear engaging gear embodiment.The gearbox initiatively engage a gear engaging gear 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, the direction that the width of described teeth 8 points to described driving gear 5 along described external splines 3 reduces gradually, and one end end face of described teeth 8 described driving gear 5 is dorsad provided with the arc envelope face 9 formed by circular arc chamfering.
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 all equal, and 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 4-7 °, the angle α of the present embodiment is 6 °, the intensity of teeth can not only be ensured, and can prevent out of supply.
The external diameter in the described arc envelope face 9 of the present embodiment reduces gradually along the radially outer direction of described gear 1, and seamlessly transits between arc envelope face 9 with the two side of corresponding described teeth, can avoid bite phenomenon further.The symmetrical line in arc envelope face 9 is the oblique line be inclined to set relative to the axis of described gear 1, angle β between the symmetrical line in the arc envelope face 9 of the present embodiment and the axis of gear 1 is 80 °, and in arc envelope face 9, the center of circle of all circular arcs is all positioned at on the straight line of the axes normal of described gear 1.
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 gearbox initiatively engage a gear engaging gear 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; By being provided with arc envelope face on the end face of teeth, even if touch between the spline tooth of external splines and the gear teeth of other tooth-shape structures, arc envelope face also can produce a tangent line component, make the gear teeth of other tooth-shape structures 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 (9)
1. a gearbox initiatively engage a gear engaging gear, 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, the direction that the width of described teeth points to described driving gear along described external splines reduces gradually, and one end end face of described teeth described driving gear is dorsad provided with the arc envelope face formed by circular arc chamfering.
2. gearbox according to claim 1 initiatively engage a gear engaging gear, is characterized in that: described teeth is arranged axisymmetricly.
3. gearbox according to claim 2 initiatively engage a gear engaging gear, 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 all equal.
4. gearbox according to claim 3 initiatively engage a gear engaging gear, 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 4-7 °.
5. gearbox according to any one of claim 1-4 is engage a gear engaging gear initiatively, it is characterized in that: the external diameter in described arc envelope face reduces gradually along the radially outer direction of described gear.
6. gearbox according to claim 5 initiatively engage a gear engaging gear, is characterized in that: seamlessly transit between described arc envelope face with the two side of corresponding described teeth.
7. gearbox according to claim 6 initiatively engage a gear engaging gear, is characterized in that: the symmetrical line in described arc envelope face is the oblique line be inclined to set relative to the axis of described gear.
8. gearbox according to claim 7 initiatively engage a gear engaging gear, is characterized in that: the angle between the symmetrical line in described arc envelope face and the axis of described gear is 80 °.
9. gearbox according to claim 5 initiatively engage a gear engaging gear, is characterized in that: in described arc envelope face, the center of circle of all circular arcs is all positioned at on the straight line of the axes normal of described gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641385.5U CN204186935U (en) | 2014-10-31 | 2014-10-31 | Gearbox is engage a gear engaging gear initiatively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641385.5U CN204186935U (en) | 2014-10-31 | 2014-10-31 | Gearbox is engage a gear engaging gear initiatively |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186935U true CN204186935U (en) | 2015-03-04 |
Family
ID=52618940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420641385.5U Expired - Fee Related CN204186935U (en) | 2014-10-31 | 2014-10-31 | Gearbox is engage a gear engaging gear initiatively |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186935U (en) |
-
2014
- 2014-10-31 CN CN201420641385.5U patent/CN204186935U/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 |