CN211145173U - Gear shifting synchronizing mechanism of compact two-gear reduction gearbox - Google Patents
Gear shifting synchronizing mechanism of compact two-gear reduction gearbox Download PDFInfo
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- CN211145173U CN211145173U CN201922262357.8U CN201922262357U CN211145173U CN 211145173 U CN211145173 U CN 211145173U CN 201922262357 U CN201922262357 U CN 201922262357U CN 211145173 U CN211145173 U CN 211145173U
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- central shaft
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Abstract
The utility model discloses a two fender reducing gear box's of compact lazytongs of shifting, include: a central shaft; the transmission gear is coaxially and fixedly sleeved at one end of the central shaft; the first gear shifting synchronous gear is sleeved at the other end of the central shaft in an empty mode, and a first gear and a second gear are coaxially arranged on the first gear shifting synchronous gear in a stepped mode; the second shifting synchronous gear is sleeved on the central shaft between the transmission gear and the first shifting synchronous gear in an empty mode, and a third gear and a fourth gear are coaxially arranged on the second shifting synchronous gear in a stepped mode; the combination sleeve is of a circular ring structure, a gear ring meshed with the second gear and the fourth gear is coaxially and fixedly arranged in the combination sleeve, and the combination sleeve is arranged between the second gear and the fourth gear and is fixedly connected with the central shaft; wherein the coupling sleeve can move axially along the central shaft and selectively and synchronously rotate in combination with the second gear or the fourth gear.
Description
Technical Field
The utility model relates to a car technical field that shifts, more specifically, the utility model relates to a two fender reducing gear boxes of compact's synchrodyne mechanism that shifts.
Background
The two-gear reduction box of the electric automobile is used as an important core in a transmission system, so that the working efficiency of the motor can be improved, the power consumption is reduced, and the endurance mileage of the electric automobile is improved. The gear shifting actuating mechanism adopts a worm gear structure, and a new product also has a ball screw structure. The worm and gear processing cost is high, the transmission structure is complex, and the whole size of the gear shifting mechanism is large and the manufacturing cost is high. It is not beneficial to the internal arrangement of the reduction gearbox and the control of the overall cost. The scheme of the dedicated lead screw pair is designed and manufactured mostly through the lead screw nut structure, the shifting fork is directly assembled with the lead screw nut, the compact reduction gearbox is not facilitated to use, and the servo gear shifting motor adopted by the matched gear shifting motor is high in cost. And the gear shifting gears on different gears are separately arranged, so that power is separately transmitted to the differential in the gear shifting process, the integral structure is complex, the precision requirement is high, and the production and maintenance cost of products is improved.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a two keep off lazytongs of shifting of reducing gear box of compact has been developed, be provided with center pin fixed connection's combination cover, through combination cover selectivity with first synchronous gear or the second synchronous gear combination of shifting, shift through first synchronous gear or the second synchronous gear transmission of shifting with power and combine the cover and transmit to the center pin in step.
The utility model provides a technical scheme does:
a shifting synchronizing mechanism of a compact two-gear reduction gearbox comprises:
a central shaft; and
the transmission gear is coaxially and fixedly sleeved at one end of the central shaft;
the first gear shifting synchronous gear is sleeved at the other end of the central shaft in an empty mode, and a first gear and a second gear are coaxially arranged on the first gear shifting synchronous gear in a stepped mode;
the second shifting synchronous gear is sleeved on the central shaft between the transmission gear and the first shifting synchronous gear in an empty mode, and a third gear and a fourth gear are coaxially arranged on the second shifting synchronous gear in a stepped mode;
wherein the second gear and the fourth gear are arranged in a relative clearance manner;
the combination sleeve is of a circular ring structure, a gear ring meshed with the second gear and the fourth gear is coaxially and fixedly arranged in the combination sleeve, and the combination sleeve is arranged between the second gear and the fourth gear and is fixedly connected with the central shaft;
the combination sleeve can move axially along the central shaft and selectively combines with the second gear or the fourth gear to rotate synchronously, and the combination sleeve rotates synchronously with the central shaft;
when the combination sleeve is combined with the second gear, the first gear shifting synchronous gear drives the combination sleeve to rotate and drives the central shaft and the transmission gear to synchronously rotate; when the combination sleeve is combined with the fourth gear, the second gear shifting synchronous gear drives the combination sleeve to rotate and drives the central shaft and the transmission gear to synchronously rotate.
Preferably, the method further comprises the following steps:
the groove is in a ring shape and is arranged on the outer circumferential surface of the combination sleeve;
and the driving mechanism is matched with the groove and is used for driving the combination sleeve to axially move along the central shaft.
Preferably, the method further comprises the following steps:
the first guide cylinder is of a circular ring structure, is sleeved on the central shaft in a hollow mode, and is coaxially and fixedly arranged with the second gear;
the second guide cylinder is of a circular ring structure, is sleeved on the central shaft in an empty mode, and is coaxially and fixedly arranged with the fourth gear;
the first guide cylinder and the second guide cylinder are arranged in a relative clearance mode, and the combination sleeve is sleeved on the first guide cylinder and the second guide cylinder in a hollow mode.
Preferably, the coupling sleeve includes:
the first blocking pieces are circumferentially and uniformly fixedly arranged on a central shaft between the first gear shifting synchronous gear and the second gear shifting synchronous gear;
the second blocking pieces are circumferentially and uniformly fixed on a central shaft between the first gear shifting synchronous gear and the second gear shifting synchronous gear and are arranged in parallel with the first blocking pieces at intervals;
and the fixing plate is of a circular ring-shaped structure and is concentrically and fixedly arranged on the combination sleeve, and the fixing plate is arranged between the first blocking piece and the second blocking piece and is fixedly connected with the first blocking piece and the second blocking piece.
Preferably, the method further comprises the following steps:
the fifth gear is coaxially and fixedly arranged between the first gear and the second gear and is sleeved on the central shaft in an empty way;
and the sixth gear is coaxially and fixedly arranged between the third gear and the fourth gear and is sleeved on the central shaft in an empty way.
Preferably, the method further comprises the following steps:
and the pair of conical bearings are symmetrically and rotatably arranged at the two axial ends of the central shaft.
Preferably, the transmission gear is splined to the central shaft.
Preferably, the first shifting synchronizing gear is in meshing transmission with the first power input gear, and the second shifting synchronizing gear is in meshing transmission with the second power input gear.
Preferably, the thickness of the fixing plate is 1/3 of the thickness of the coupling sleeve, and the fixing plate is located at the middle of the coupling sleeve.
Preferably, the clearance between the first guide cylinder and the second guide cylinder is 5-10 mm.
Beneficial effects of the utility model
The utility model relates to a compact two keep off synchronous mechanism that shifts of reducing gear box of development is provided with the combination cover with center pin fixed connection, through combination cover selectivity with first synchronous gear or the second synchronous gear that shifts combine, shift synchronous gear transmission to combination cover and synchronous transmission to the center pin through first synchronous gear or the second of shifting with power, transmit the transmission gear through the center pin again to realize the transmission of power.
Drawings
Fig. 1 is the structure schematic diagram of the gear shifting synchronizing mechanism of the compact two-gear reduction box.
Fig. 2 is the structure schematic diagram of the gear shifting synchronizing mechanism of the compact two-gear reduction box.
Fig. 3 is the structure schematic diagram of the gear shifting synchronizing mechanism of the compact two-gear reduction box.
Fig. 4 is the structure diagram of the first gear shifting synchronous gear of the present invention.
Fig. 5 is a schematic structural view of the second gear shifting synchronous gear of the present invention.
Fig. 6 is a schematic structural view of the coupling sleeve and the central shaft of the present invention.
Fig. 7 is a schematic structural view of the coupling sleeve and the central shaft of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1-7, the utility model provides a gear shifting synchronizing mechanism of a compact two-gear reduction box, which comprises a central shaft 100; a transmission gear 110, preferably a spline connection, is fixedly connected to one axial end of the center shaft 100. A first shifting synchronizing gear 120 is mounted on the other axial end of the central shaft 100 in an empty manner, and a first gear 121 and a second gear 122 are coaxially provided in a stepped manner. A first guiding cylinder 123 is coaxially and fixedly arranged with the second gear 122, is in a circular ring structure, and is sleeved on the central shaft in an empty way. A second shifting synchronizing gear 130 is sleeved on the central shaft 100 between the transmission gear 110 and the first shifting synchronizing gear 120, and a third gear 131 and a fourth gear 132 are coaxially and stepwisely arranged on the second shifting synchronizing gear 130; a second guide cylinder 133 is coaxially and fixedly arranged with the fourth gear 132, is of a circular ring structure, and is sleeved on the central shaft in an empty way; the first guide cylinder 123 and the second guide cylinder 133 are arranged opposite to each other with a gap.
And a coupling sleeve 140 having a circular ring structure and coaxially and fixedly provided with a gear ring 141 engaged with the second gear 122 and the fourth gear 132, wherein the coupling sleeve 140 is disposed between the second gear 122 and the fourth gear 132, is freely sleeved on the first guide cylinder 123 and the second guide cylinder 133, and is fixedly connected with the central shaft 100.
A plurality of first blocking pieces 142 are circumferentially and uniformly fixed to the center shaft 100 between the first shift synchronizing gear 120 and the second shift synchronizing gear 130. A plurality of second blocking pieces (not shown in the figure) are uniformly and fixedly arranged on the central shaft 100 between the first shifting synchronizing gear 120 and the second shifting synchronizing gear 130 in the circumferential direction, and the second blocking pieces and the first blocking pieces 142 are arranged in parallel at intervals. A fixing plate 144 is arranged between the first blocking piece 142 and the second blocking piece, is in a circular ring structure, and is concentrically and fixedly arranged on the combining sleeve 140, and the fixing plate 144 is fixedly connected with the first blocking piece 142 and the second blocking piece.
An annular groove 145 is formed on an outer circumferential surface of the coupling sleeve 140, and a driving mechanism (not shown) is disposed to cooperate with the annular groove 145 to drive the coupling sleeve 140 to move axially along the central shaft 100 and selectively couple with the second gear 122 or the fourth gear 132 to rotate synchronously, and the coupling sleeve 140 rotates synchronously with the central shaft 100.
When the coupling sleeve 140 is coupled to the second gear 122, the first shifting synchronizing gear 120 drives the coupling sleeve to rotate and drives the central shaft 100 and the transfer gear 110 to rotate synchronously; when the coupling sleeve 140 is coupled to the fourth gear 132, the second shift synchronizing gear 130 rotates the coupling sleeve 140 and drives the central shaft 100 and the transfer gear 110 to rotate synchronously.
As a preferred embodiment, a fifth gear 124 is coaxially and fixedly arranged between the first gear 121 and the second gear 122, and is sleeved on the central shaft 100; a sixth gear 134 is coaxially fixed between the third gear 131 and the fourth gear 132, and is fitted on the central shaft 100. A pair of tapered bearings 150 are rotatably and symmetrically provided at both axial ends of the center shaft 100.
The first shifting synchronizing gear 120 is engaged with a first power input gear (not shown) for transmission of a first power, and the second shifting synchronizing gear 130 is engaged with a second power input gear (not shown) for transmission of a second power.
The thickness of the fixing plate 144 is 1/3 of the thickness of the coupling sleeve 140, and the fixing plate is located at the middle of the coupling sleeve 140. The clearance between the first guide cylinder 123 and the second guide cylinder 133 is 5-10 mm.
The utility model relates to a compact two keep off synchronous mechanism that shifts of reducing gear box of development is provided with the combination cover with center pin fixed connection, through combination cover selectivity with first synchronous gear or the second synchronous gear that shifts combine, shift synchronous gear transmission to combination cover and synchronous transmission to the center pin through first synchronous gear or the second of shifting with power, transmit the transmission gear through the center pin again to realize the transmission of power.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (10)
1. The utility model provides a synchronous mechanism that shifts of two fender reducing gears boxes of compact which characterized in that includes:
a central shaft; and
the transmission gear is coaxially and fixedly sleeved at one end of the central shaft;
the first gear shifting synchronous gear is sleeved at the other end of the central shaft in an empty mode, and a first gear and a second gear are coaxially arranged on the first gear shifting synchronous gear in a stepped mode;
the second shifting synchronous gear is sleeved on the central shaft between the transmission gear and the first shifting synchronous gear in an empty mode, and a third gear and a fourth gear are coaxially arranged on the second shifting synchronous gear in a stepped mode;
wherein the second gear and the fourth gear are arranged in a relative clearance manner;
the combination sleeve is of a circular ring structure, a gear ring meshed with the second gear and the fourth gear is coaxially and fixedly arranged in the combination sleeve, and the combination sleeve is arranged between the second gear and the fourth gear and is fixedly connected with the central shaft;
the combination sleeve can move axially along the central shaft and selectively combines with the second gear or the fourth gear to rotate synchronously, and the combination sleeve rotates synchronously with the central shaft;
when the combination sleeve is combined with the second gear, the first gear shifting synchronous gear drives the combination sleeve to rotate and drives the central shaft and the transmission gear to synchronously rotate; when the combination sleeve is combined with the fourth gear, the second gear shifting synchronous gear drives the combination sleeve to rotate and drives the central shaft and the transmission gear to synchronously rotate.
2. The gear shifting synchronizing mechanism of the compact two-speed reduction box according to claim 1, further comprising:
the groove is in a ring shape and is arranged on the outer circumferential surface of the combination sleeve;
and the driving mechanism is matched with the groove and is used for driving the combination sleeve to axially move along the central shaft.
3. The gear shifting synchronizing mechanism of the compact two-speed reduction gearbox according to claim 1 or 2, characterized by further comprising:
the first guide cylinder is of a circular ring structure, is sleeved on the central shaft in a hollow mode, and is coaxially and fixedly arranged with the second gear;
the second guide cylinder is of a circular ring structure, is sleeved on the central shaft in an empty mode, and is coaxially and fixedly arranged with the fourth gear;
the first guide cylinder and the second guide cylinder are arranged in a relative clearance mode, and the combination sleeve is sleeved on the first guide cylinder and the second guide cylinder in a hollow mode.
4. A gearshift synchronizing mechanism for a compact two-speed gearbox according to claim 3, characterized in that said coupling sleeve comprises:
the first blocking pieces are circumferentially and uniformly fixedly arranged on a central shaft between the first gear shifting synchronous gear and the second gear shifting synchronous gear;
the second blocking pieces are circumferentially and uniformly fixed on a central shaft between the first gear shifting synchronous gear and the second gear shifting synchronous gear and are arranged in parallel with the first blocking pieces at intervals;
and the fixing plate is of a circular ring-shaped structure and is concentrically and fixedly arranged on the combination sleeve, and the fixing plate is arranged between the first blocking piece and the second blocking piece and is fixedly connected with the first blocking piece and the second blocking piece.
5. The gear shifting synchronizing mechanism of the compact two-speed gearbox according to claim 1, 2 or 4, characterized by further comprising:
the fifth gear is coaxially and fixedly arranged between the first gear and the second gear and is sleeved on the central shaft in an empty way;
and the sixth gear is coaxially and fixedly arranged between the third gear and the fourth gear and is sleeved on the central shaft in an empty way.
6. The gear shifting synchronizing mechanism of the compact two-speed reduction gearbox according to claim 5, further comprising:
and the pair of conical bearings are symmetrically and rotatably arranged at the two axial ends of the central shaft.
7. A gear change synchronising mechanism for a compact two speed gearbox according to claim 1, 2, 4 or 6 characterised in that the transfer gear is splined to the central shaft.
8. The gear shifting synchronizing mechanism of the compact two-speed reduction box according to claim 7, wherein the first gear shifting synchronizing gear is in meshed transmission with a first power input gear, and the second gear shifting synchronizing gear is in meshed transmission with a second power input gear.
9. The gear shifting synchronizing mechanism of the compact two-gear speed reducing box according to claim 4, characterized in that the thickness of the fixing plate is 1/3 of the thickness of the combining sleeve, and the fixing plate is positioned in the middle of the combining sleeve.
10. The gear shifting synchronizing mechanism of the compact two-gear speed reduction box according to claim 4 or 9, wherein the clearance between the first guide cylinder and the second guide cylinder is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922262357.8U CN211145173U (en) | 2019-12-17 | 2019-12-17 | Gear shifting synchronizing mechanism of compact two-gear reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922262357.8U CN211145173U (en) | 2019-12-17 | 2019-12-17 | Gear shifting synchronizing mechanism of compact two-gear reduction gearbox |
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| CN211145173U true CN211145173U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922262357.8U Active CN211145173U (en) | 2019-12-17 | 2019-12-17 | Gear shifting synchronizing mechanism of compact two-gear reduction gearbox |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413015A (en) * | 2020-12-01 | 2021-02-26 | 吉林大学 | Chassis brake module mechanical structure for multiple vehicle types and hydraulic control system |
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2019
- 2019-12-17 CN CN201922262357.8U patent/CN211145173U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413015A (en) * | 2020-12-01 | 2021-02-26 | 吉林大学 | Chassis brake module mechanical structure for multiple vehicle types and hydraulic control system |
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