CN220816425U - Starting mechanism - Google Patents
Starting mechanism Download PDFInfo
- Publication number
- CN220816425U CN220816425U CN202322533757.4U CN202322533757U CN220816425U CN 220816425 U CN220816425 U CN 220816425U CN 202322533757 U CN202322533757 U CN 202322533757U CN 220816425 U CN220816425 U CN 220816425U
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- starting
- shaft
- gear
- ratchet
- boss
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The utility model relates to a starting mechanism, which comprises a box body, a main shaft, a counter shaft and a starting shaft, wherein the main shaft, the counter shaft and the inner starting shaft are arranged in the box body in a rotating fit manner; the starting and reversing of the vehicle can be realized through a single starting mechanism, and during starting, the starting rod drives the boss ratchet II of the outer starting shaft to be combined with the boss ratchet I of the inner starting shaft, and drives the main shaft to rotate to start the engine; the vehicle runs forward, and power is transmitted to the auxiliary shaft through the main shaft; the vehicle runs in reverse, the main shaft transmits power to the starting shaft, and the power is transmitted to the auxiliary shaft through the starting gear.
Description
Technical Field
The utility model relates to the technical field of starting mechanisms, in particular to a split type starting shaft structure capable of realizing reverse gear and starting.
Background
In motor vehicles, reversing and starting are controlled by separate reversing and starting gear trains, respectively, which are connected to the drive shaft and are housed separately in the gearbox, not only increasing the size of the gearbox, but also increasing the number of parts, thus increasing the cost of the whole engine.
Disclosure of utility model
In view of the above, the utility model provides a starting mechanism which has a small number of parts and a split shaft, is easy to replace, reduces the cost of an engine and optimizes the size of the engine.
The starting mechanism provided by the utility model adopts the following technical scheme:
A starting mechanism comprising:
A case;
The main shaft is arranged on the box body in a rotating fit manner, and a main shaft transmission gear and a main shaft driving gear are coaxially arranged on the main shaft;
The auxiliary shaft is arranged on the box body in a rotating fit manner, and an auxiliary shaft transmission gear and an auxiliary shaft driven gear are coaxially arranged on the auxiliary shaft;
The starting shaft comprises an outer starting shaft and an inner starting shaft, the inner starting shaft is arranged in the box body in a rotating fit manner, the outer starting shaft can be driven to be arranged in the box body in a rotating fit manner along the axial direction, one end of the outer starting shaft extends out of the box body, the inner starting shaft is provided with a boss ratchet I, the outer starting shaft is provided with a boss ratchet II, the outer starting shaft can be driven to rotate so that the boss ratchet II is meshed with the boss ratchet I, the inner starting shaft is provided with a starting gear, and the main shaft transmission gear and the auxiliary shaft transmission gear are meshed with the starting gear respectively;
When the engine is started, the starting shaft is driven to rotate, the second boss ratchet of the outer starting shaft is combined with the first boss ratchet of the inner starting shaft, and the starting gear drives the main shaft to rotate along the advancing direction to start the engine; when the vehicle runs forwards, the main shaft transmits power to the auxiliary shaft through the main shaft driving gear and the auxiliary shaft driven gear; when the vehicle runs reversely, the main shaft transmits power to the starting shaft through the main shaft transmission gear and the starting gear, and then transmits power to the auxiliary shaft through the starting gear and the auxiliary shaft transmission gear.
Optionally, a ratchet spring for limiting circumferential rotation of the boss ratchet II is arranged on the boss ratchet II.
Optionally, a starting reset spring for applying an outward pretightening force to the second boss ratchet is arranged on the outer starting shaft.
Optionally, a bushing is disposed on the outer side of the outer actuation shaft, which is located outside the actuation return spring.
Optionally, a first limiting part for axially positioning the starting gear is arranged on the inner starting shaft.
Optionally, a second limiting part for limiting the second boss ratchet and the starting return spring along the axial direction is arranged on the outer starting shaft.
Optionally, a needle bearing is embedded on the inner starting shaft, and the outer starting shaft can be driven to be combined with the inner side of the needle bearing along the axial direction.
Optionally, the main shaft driving gear is provided with a plurality of along the axial direction of the main shaft, and the auxiliary shaft driven gear is provided with a plurality of along the axial direction of the auxiliary shaft.
In summary, the present utility model includes at least one of the following beneficial technical effects: the starting and reversing of the vehicle can be realized through a single starting mechanism, when the vehicle starts to start, the outer starting shaft rotates, the second boss ratchet is axially moved to a preset distance and combined with the first boss ratchet of the inner starting shaft, so that the starting gear rotates together with the starting shaft, and the main shaft rotates in the advancing direction to start the engine; when the vehicle runs forward, the main shaft directly transmits power to the auxiliary shaft; when the vehicle moves reversely, power is transmitted from the main shaft to the starting shaft and then transmitted to the auxiliary shaft through the starting gear, so that starting and reversing can be realized through a single starter, and meanwhile, the starting shaft is in a split structure and is easy to replace.
Drawings
FIG. 1 is a top plan view of an embodiment of the present utility model with a primary and secondary shaft engaged;
FIG. 2 is a cross-sectional view of the engagement of the main and auxiliary shafts and the actuating shaft in the housing of an embodiment of the present utility model;
fig. 3 is a schematic view of a split starting shaft structure according to an embodiment of the present utility model.
Reference numerals illustrate: 1. starting a shaft; 1a, an outer starting shaft; 1b, an inner starting shaft; 2. a main shaft; 2a, a main shaft transmission gear; 2b, a main shaft driving gear I; 2c, a main shaft driving gear II; 2d, a main shaft driving gear III; 2e, a main shaft driving gear IV; 3. a secondary shaft; 3a, a countershaft transmission gear; 3b, a driven gear I of the auxiliary shaft; 3c, a secondary shaft driven gear II; 3d, a driven gear of the auxiliary shaft; 3e, a driven gear of the auxiliary shaft is fourth; 4. a starting gear; 5. needle roller bearings; 6. a boss ratchet; 61. a boss ratchet I; 62. a boss ratchet II; 7. a ratchet spring; 8. a second shaft shoulder retainer ring; 9. starting a reset spring; 10. a bushing; 11. a circlip; 12. and a shaft shoulder check ring I.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
The embodiment of the utility model discloses a starting mechanism.
Referring to fig. 1-3, a starting mechanism comprises a box body, a main shaft 2, a countershaft 3 and a starting shaft 1, wherein the main shaft 2 is arranged in the box body in a rotating fit manner, a main shaft gear is coaxially arranged on the main shaft 2, and the main shaft gear comprises a main shaft transmission gear 2a and a main shaft driving gear; the auxiliary shaft 3 is arranged on the box body in a rotating fit manner, and auxiliary shaft gears are coaxially arranged on the auxiliary shaft 3 and comprise auxiliary shaft transmission gears 3a and auxiliary shaft driven gears; the starting shaft 1 adopts a split structure and is easy to replace, the starting shaft 1 comprises an outer starting shaft 1a and an inner starting shaft 1b, the inner starting shaft 1b is arranged in a box body in a rotating fit manner, the outer starting shaft 1a can be driven to rotate along the axial direction in a matching manner, one end of the outer starting shaft 1a extends out of the box body and is used for being connected with a starting rod, a boss ratchet 6 is arranged on the starting shaft 1, the inner starting shaft 1b is provided with a boss ratchet 61, the outer starting shaft 1a is provided with a boss ratchet 62, the boss ratchet 62 is meshed with the boss ratchet 61 by rotating the outer starting shaft 1a in a driving manner, the inner starting shaft 1b is provided with a starting gear 4, and a main shaft transmission gear 2a and a auxiliary shaft transmission gear 3a are meshed with the starting gear 4 respectively.
The utility model can realize the starting and reversing of the vehicle through a single starting mechanism, a starting rod is connected with the outer end of an outer starting shaft 1a, when the vehicle starts, the starting rod is pulled upwards to drive the outer starting shaft 1a to rotate, in the embodiment, the starting shaft 1 is driven to rotate through a spiral groove between the starting rod and the outer starting shaft 1a, a boss ratchet II 62 of the outer starting shaft 1a is combined with a boss ratchet I61 of an inner starting shaft 1b, and the main shaft 2 is driven to rotate along the advancing direction through the meshing of a starting gear 4 and a main shaft transmission gear 2a to start the engine; when the vehicle runs forward, the main shaft 2 directly transmits power to the auxiliary shaft 3 through the main shaft driving gear and the auxiliary shaft driven gear; when the vehicle runs reversely, the main shaft 2 transmits power to the inner starting shaft 1b through the meshing of the main shaft transmission gear 2a and the starting gear 4, and then transmits power to the auxiliary shaft 3 through the meshing of the starting gear 4 and the auxiliary shaft transmission gear 3b, and the starting gear 4 changes the rotation direction, so that the starting and reversing functions can be realized through a single starting mechanism, and meanwhile, the vehicle is easy to replace.
In this embodiment, the case is a gear case, which is a prior art and is not described here in detail.
The main shaft gears are provided in plural at intervals along the axial direction of the main shaft 2, and the sub shaft gears are provided in plural at intervals along the axial direction of the sub shaft 3. In the embodiment, five main shaft gears and auxiliary shaft gears are respectively arranged to form five groups of driving gears of an engine transmission system, and the five groups of driving gears respectively correspond to 1 gear, 2 gear, 3 gear, 4 gear and reverse gear, so that gear shifting of the whole vehicle is realized. The main shaft gears are respectively a main shaft transmission gear 2a, a main shaft driving gear 1 b, a main shaft driving gear 2c, a main shaft driving gear three 2d and a main shaft driving gear four 2e from outside to inside, and the auxiliary shaft gears are respectively a auxiliary shaft transmission gear 3a, an auxiliary shaft driven gear 3b, an auxiliary shaft driven gear two 3c, an auxiliary shaft driven gear three 3d and an auxiliary shaft driven gear four 3e from outside to inside, wherein the main shaft driving gear 2a is meshed with a starting gear 4, the auxiliary shaft driven gear 3a is meshed with the starting gear 4, and the main shaft 2 and the auxiliary shaft 3 can be directly transmitted through corresponding gear meshing.
The inner starting shaft 1b is provided with a first stopper for axially positioning the starting gear 4. In this embodiment, the first limiting member includes a circlip 11 and a shoulder collar 12, the starting gear 4 is coaxially disposed in the shoulder collar 12, the circlip 11 is coaxially disposed on the inner starting shaft 1b and is located on the inner side of the shoulder collar 12, so as to limit the axial displacement of the shoulder collar 12, and improve the stability of the starting gear 4.
The needle bearing 5 is embedded on the inner starting shaft 1b, in this embodiment, a concave hole is formed at the outer end of the inner starting shaft 1b, the needle bearing 5 is arranged in the concave hole, and when the boss ratchet II 62 on the outer starting shaft 1a is meshed with the boss ratchet I61 of the inner starting shaft 1b, the inner end of the outer starting shaft 1a is combined with the inner side of the needle bearing 5, so that the rotation stability of the outer starting shaft 1a is effectively ensured.
The outer contour of the boss ratchet II 62 is coaxially provided with a ratchet spring 7 for limiting circumferential rotation of the boss ratchet II 62, and the outer starting shaft 1a is provided with a starting return spring 9 for applying an outward pretightening force to the boss ratchet II 62. The ratchet spring 7 improves the friction force of the boss ratchet II 62, and ensures the engagement between the boss ratchet II 62 and the boss ratchet I61 while limiting the circumferential rotation of the ratchet spring 7, thereby completing the combination with the starting gear 4. In this embodiment, the ratchet spring 7 has a bent portion, and the bent portion is connected to the case, and cooperates with the case to further position the start return spring 9.
The outer starting shaft 1a is provided with a second limiting piece for limiting the boss ratchet 62 and the starting return spring 9 in the axial direction. In the embodiment, the second limiting part comprises a second shoulder retainer ring 8, and the second shoulder retainer ring 8 is coaxially arranged between the second boss ratchet 62 and the starting return spring 9 on the outer starting shaft 1 a.
The starting return spring 9 is arranged between the second shoulder retainer 8 and the bushing 10, and applies an outward pretightening force to the second boss ratchet 62 to separate the second boss ratchet 62 from the first boss ratchet 61.
The outer starting shaft 1a is provided with a bushing 10 positioned outside the starting return spring 9, the bushing 10 is coaxially arranged on the outer starting shaft 1a, and the bushing 10 can effectively reduce the abrasion and shock absorption of the starting return spring 9.
Compared with the traditional technical scheme, the utility model reduces the number of gear parts, optimizes the size of the gear box and reduces the cost.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. A starting mechanism, characterized by: comprising the following steps:
A case;
The main shaft is arranged on the box body in a rotating fit manner, and a main shaft transmission gear and a main shaft driving gear are coaxially arranged on the main shaft;
The auxiliary shaft is arranged on the box body in a rotating fit manner, and an auxiliary shaft transmission gear and an auxiliary shaft driven gear are coaxially arranged on the auxiliary shaft;
The starting shaft comprises an outer starting shaft and an inner starting shaft, the inner starting shaft is arranged in the box body in a rotating fit manner, the outer starting shaft can be driven to be arranged in the box body in a rotating fit manner along the axial direction, one end of the outer starting shaft extends out of the box body, the inner starting shaft is provided with a boss ratchet I, the outer starting shaft is provided with a boss ratchet II, the outer starting shaft can be driven to rotate so that the boss ratchet II is meshed with the boss ratchet I, the inner starting shaft is provided with a starting gear, and the main shaft transmission gear and the auxiliary shaft transmission gear are meshed with the starting gear respectively;
When the engine is started, the starting shaft is driven to rotate, the second boss ratchet of the outer starting shaft is combined with the first boss ratchet of the inner starting shaft, and the starting gear drives the main shaft to rotate along the advancing direction to start the engine; when the vehicle runs forwards, the main shaft transmits power to the auxiliary shaft through the main shaft driving gear and the auxiliary shaft driven gear; when the vehicle runs reversely, the main shaft transmits power to the starting shaft through the main shaft transmission gear and the starting gear, and then transmits power to the auxiliary shaft through the starting gear and the auxiliary shaft transmission gear.
2. The starting mechanism of claim 1, wherein: and a ratchet spring used for limiting the circumferential rotation of the boss ratchet II is arranged on the boss ratchet II.
3. The starting mechanism of claim 2, wherein: the outer starting shaft is provided with a starting reset spring for applying outward pretightening force to the boss ratchet II.
4. A starting mechanism as claimed in claim 3, wherein: the outer starting shaft is provided with a bushing on the outer side of the starting return spring.
5. The starting mechanism of claim 1, wherein: and a first limiting part for axially positioning the starting gear is arranged on the inner starting shaft.
6. A starting mechanism as claimed in claim 3, wherein: and a limiting piece II used for limiting the boss ratchet II and the starting return spring along the axial direction is arranged on the outer starting shaft.
7. The starting mechanism of claim 1, wherein: the inner starting shaft is embedded with a needle bearing, and the outer starting shaft can be driven to be combined with the inner side of the needle bearing along the axial direction.
8. The starting mechanism of claim 1, wherein: the main shaft driving gear is provided with a plurality of auxiliary shaft driven gears along the axial direction of the main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322533757.4U CN220816425U (en) | 2023-09-18 | 2023-09-18 | Starting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322533757.4U CN220816425U (en) | 2023-09-18 | 2023-09-18 | Starting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816425U true CN220816425U (en) | 2024-04-19 |
Family
ID=90707399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322533757.4U Active CN220816425U (en) | 2023-09-18 | 2023-09-18 | Starting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816425U (en) |
-
2023
- 2023-09-18 CN CN202322533757.4U patent/CN220816425U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |