CN203297314U - Automobile transmission input shaft - Google Patents
Automobile transmission input shaft Download PDFInfo
- Publication number
- CN203297314U CN203297314U CN2013203300780U CN201320330078U CN203297314U CN 203297314 U CN203297314 U CN 203297314U CN 2013203300780 U CN2013203300780 U CN 2013203300780U CN 201320330078 U CN201320330078 U CN 201320330078U CN 203297314 U CN203297314 U CN 203297314U
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- China
- Prior art keywords
- input shaft
- hole
- stepped part
- mounting hole
- transmission input
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Abstract
The utility model provides an automobile transmission input shaft, and belongs to the technical field of automobile parts. The automobile transmission input shaft solves the problem that the traditional transmission input shaft is short in working service life by being positioned in a high-temperature environment for a long time because an effective radiation structure is lacked. The automobile transmission input shaft comprises a step shaft body, wherein the step shaft body is respectively provided with a step part I and a step part II which are connected with a transmission gear; the outer diameter of the step part II is larger than the outer diameter of the step part I; a section of installation holes are axially formed in the free end part of the step part II from outside to inside; a section of connecting holes are axially formed at the bottoms of the installation holes; the center lines of the installation holes are overlapped with the center lines of the connecting holes; the diameters of the installation holes are larger than the diameters of the connecting holes, and an expanding step is formed between the installation holes and the connecting holes. The automobile transmission input shaft provided by the utility model is simple in structure, can effectively reduce the temperature of the input shaft because the step shaft body is internally hollow and is high in mechanical strength and long in service life.
Description
Technical field
The utility model belongs to technical field of automobile parts, relates to a kind of automotive transmission input shaft.
Background technique
Speed changer is can fix or stepping changes the gear drive of output shaft and input shaft velocity ratio, and it is comprised of driving mechanism and gear.Take five speed transmission as example, on output shaft, be set with the gear of five different numbers of teeth, output shaft gear and the corresponding engagement of each shifting gear on jack shaft or input shaft, when automobile is in neutral gear, output shaft gear all rotates with the rotating speed that clutch spreads out of, on output shaft, but output shaft is not rotated due to the output shaft gear empty set; When driver's engage a gear, reverse shift fork can promote some synchronizers and engage with output shaft gear, wherein, synchronizer by spline joint on output shaft, when synchronizer with after output shaft gear engages just by transmission of power to output shaft, realize engage a gear.
Owing on input shaft, having high-grade gear and low-grade high torque gear, this just needs input shaft to meet following the requirement: 1, the input shaft gear needs of empty set on input shaft and input shaft have lubricatedly preferably, that is to say on input shaft and should be provided with oil passageway can be by oil delivery to the surface of contact of input shaft gear and input shaft; 2, the high torque (HT) gear on input shaft requires input shaft that certain intensity need to be arranged, and also just needs suitable material and the larger diameter of axle; 3, input shaft is often understood High Rotation Speed, particularly during galloping, so input shaft should have heat radiation preferably, to prevent the axis body scaling loss.
Present automotive transmission input shaft is generally a Step Shaft, sheathed each grade driving gear and synchronizer successively on Step Shaft, yet owing on this kind Step Shaft, lacking effective radiating structure, make the long-term work in hot environment that is in of input shaft, this will have a strong impact on the working life of output shaft.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind ofly can effectively reduce the temperature of self in the course of the work, thereby has improved the automotive transmission input shaft in the working life of self.
the purpose of this utility model can realize by following technical proposal: a kind of automotive transmission input shaft, comprise the Step Shaft body, the stepped part one and the stepped part two that on described Step Shaft body, have respectively the connection for transmission gear, the outer diameter of described stepped part two is greater than the outer diameter of stepped part one, it is characterized in that, at stepped part two free end end ecto-entads, axially offer one section mounting hole, at mounting hole hole lower shaft to also offering one section attachment hole, the center line overlaid of the center line of described mounting hole and above-mentioned attachment hole, the bore dia of described mounting hole is greater than between the bore dia of above-mentioned attachment hole and this mounting hole and attachment hole, forming an enlarging step.
In above-mentioned automotive transmission input shaft, the hole wall of described mounting hole and the hole wall of attachment hole are straight shape wall, and the step surface of above-mentioned enlarging step is respectively perpendicular to the hole wall of above-mentioned mounting hole and the hole wall of above-mentioned attachment hole.
In above-mentioned automotive transmission input shaft, the free-ended periphery wall of described stepped part one arranges outside thread, on the periphery wall of stepped part one, also is provided with spline one, between described spline one and outside thread, also is provided with against ring.
In above-mentioned automotive transmission input shaft, the end, mounting hole aperture of described stepped part two also sets firmly and is equipped with three lobe curved baffles, and described three lobe curved baffles are uniformly distributed along the mounting hole circumferential direction respectively.
In above-mentioned automotive transmission input shaft, on the periphery wall of stepped part two, also be provided with spline two.
compared with prior art, this automotive transmission input shaft axially offers one section attachment hole stepped part two is interior, at stepped part two free end end ecto-entads, axially offer one section mounting hole and this mounting hole is connected with above-mentioned attachment hole, the center line overlaid of the center line of described mounting hole and above-mentioned attachment hole, the bore dia of described mounting hole is greater than between the bore dia of above-mentioned attachment hole and this mounting hole and attachment hole, forming an enlarging step, owing on input shaft, having attachment hole and mounting hole, the hollow temperature that can effectively reduce input shaft of Step Shaft body interior, improve the working life of input shaft, owing on input shaft, being formed in one, so the overall mechanical strength of input shaft is higher.The utility model is simple in structure, the hollow temperature that can effectively reduce input shaft of Step Shaft body interior, and mechanical strength is higher, and working life is longer.
The accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this automotive transmission input shaft.
In figure, 1, the Step Shaft body; 2, stepped part one; 3, stepped part two; 4, attachment hole; 5, mounting hole; 6, enlarging step; 7, spline one; 8, against ring; 9, three lobe curved baffles; 10, spline two.
Embodiment
Be below specific embodiment of the utility model 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.
as shown in Figure 1, this automotive transmission input shaft mainly is comprised of Step Shaft body 1, the stepped part 1 and the stepped part 23 that on Step Shaft body 1, have respectively the connection for transmission gear, the outer diameter of stepped part 23 is greater than the outer diameter of stepped part 1, at stepped part 23 free end end ecto-entads, axially offer one section mounting hole 5, at mounting hole 5 hole lower shafts to also offering one section attachment hole 4, the center line overlaid of the center line of mounting hole 5 and above-mentioned attachment hole 4, the bore dia of mounting hole 5 is greater than between the bore dia of above-mentioned attachment hole 4 and this mounting hole 5 and attachment hole 4, forming an enlarging step 6, the hole wall of the hole wall of described mounting hole 5 and attachment hole 4 is straight shape wall, and the step surface of above-mentioned enlarging step 6 is respectively perpendicular to the hole wall of above-mentioned mounting hole 5 and the hole wall of above-mentioned attachment hole 4, the free-ended periphery wall of described stepped part 1 arranges outside thread, on the periphery wall of stepped part 1, also is provided with spline 1, between described spline 1 and outside thread, also is provided with against ring 8, mounting hole 5 ends, aperture of described stepped part 23 also set firmly and are equipped with three lobe curved baffles 9, and described three lobe curved baffles 9 are uniformly distributed along mounting hole 5 circumferential direction respectively, on the periphery wall of stepped part 23, also be provided with spline 2 10.
Specific embodiment described herein is only 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 supplements 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.
Although this paper has more used: Step Shaft body 1; Stepped part 1; Stepped part 23; Attachment hole 4; Mounting hole 5; Enlarging step 6; Spline 1; Against ring 8; Three lobe curved baffles 9; Spline 2 10 terms such as grade, but do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. automotive transmission input shaft, comprise Step Shaft body (1), the stepped part one (2) and the stepped part two (3) that on described Step Shaft body (1), have respectively the connection for transmission gear, the outer diameter of described stepped part two (3) is greater than the outer diameter of stepped part one (2), it is characterized in that, at stepped part two (3) free end end ecto-entads, axially offer one section mounting hole (5), at mounting hole (5) hole lower shaft to also offering one section attachment hole (4), the center line overlaid of the center line of described mounting hole (5) and above-mentioned attachment hole (4), the bore dia of described mounting hole (5) is greater than between the bore dia of above-mentioned attachment hole (4) and this mounting hole (5) and attachment hole (4), forming an enlarging step (6).
2. automotive transmission input shaft according to claim 1, it is characterized in that, the hole wall of the hole wall of described mounting hole (5) and attachment hole (4) is straight shape wall, and the step surface of above-mentioned enlarging step (6) is respectively perpendicular to the hole wall of above-mentioned mounting hole (5) and the hole wall of above-mentioned attachment hole (4).
3. automotive transmission input shaft according to claim 2, it is characterized in that, described stepped part one (2) free-ended periphery wall arranges outside thread, on the periphery wall of stepped part one (2), also be provided with spline one (7), between described spline one (7) and outside thread, also be provided with against ring (8).
4. automotive transmission input shaft according to claim 2, it is characterized in that, mounting hole (5) end, aperture of described stepped part two (3) also sets firmly and is equipped with three lobe curved baffles (9), and described three lobe curved baffles (9) are uniformly distributed along mounting hole (5) circumferential direction respectively.
5. automotive transmission input shaft according to claim 4, is characterized in that, on the periphery wall of stepped part two (3), also is provided with spline two (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203300780U CN203297314U (en) | 2013-06-08 | 2013-06-08 | Automobile transmission input shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203300780U CN203297314U (en) | 2013-06-08 | 2013-06-08 | Automobile transmission input shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297314U true CN203297314U (en) | 2013-11-20 |
Family
ID=49573323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203300780U Expired - Fee Related CN203297314U (en) | 2013-06-08 | 2013-06-08 | Automobile transmission input shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297314U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482033A (en) * | 2014-12-19 | 2015-04-01 | 无锡市士民机械设备厂 | Rotary table main shaft of circle formation and enveloping integrated machine |
| CN104595346A (en) * | 2015-01-21 | 2015-05-06 | 大丰市中德精锻件有限公司 | Middle concave surface precision forging piece structure for car output shaft |
| CN106015523A (en) * | 2016-07-01 | 2016-10-12 | 东风商用车有限公司 | Direct-gear gear mechanism |
-
2013
- 2013-06-08 CN CN2013203300780U patent/CN203297314U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482033A (en) * | 2014-12-19 | 2015-04-01 | 无锡市士民机械设备厂 | Rotary table main shaft of circle formation and enveloping integrated machine |
| CN104595346A (en) * | 2015-01-21 | 2015-05-06 | 大丰市中德精锻件有限公司 | Middle concave surface precision forging piece structure for car output shaft |
| CN106015523A (en) * | 2016-07-01 | 2016-10-12 | 东风商用车有限公司 | Direct-gear gear mechanism |
| CN106015523B (en) * | 2016-07-01 | 2018-04-17 | 东风商用车有限公司 | A kind of direct gear gear mechanism |
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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: 20131120 Termination date: 20150608 |
|
| EXPY | Termination of patent right or utility model |