CN219432412U - Reversing gear shifting mechanism applied to CVT gearbox - Google Patents
Reversing gear shifting mechanism applied to CVT gearbox Download PDFInfo
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- CN219432412U CN219432412U CN202320394159.0U CN202320394159U CN219432412U CN 219432412 U CN219432412 U CN 219432412U CN 202320394159 U CN202320394159 U CN 202320394159U CN 219432412 U CN219432412 U CN 219432412U
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- reversing
- sliding sleeve
- driven wheel
- wheel disc
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Abstract
The utility model discloses a reversing gear shifting mechanism applied to a CVT gearbox, which comprises the following components: the driven wheel assembly comprises a driven wheel serving as an external power input member, and the lower end of the driven wheel assembly is provided with a linkage gear; the gear sliding sleeve is positioned below the driven wheel and comprises two reversing gears which are coaxially connected and oppositely arranged, and at least one part of the linkage gear extends into the space between the two reversing gears; one end of the shifting sheet is connected with the gear sliding sleeve and is used for driving the gear sliding sleeve to axially move so as to switch the meshing states of the two reversing gears and the linkage gear and adjust the rotation direction of the gear sliding sleeve, wherein the rotation direction comprises forward and reverse rotation states and non-rotation states; the control rod is connected with the poking piece through a connecting rod transmission and is used for driving the poking piece to move along the axis direction of the gear sliding sleeve. The number of gears for reversing and gear shifting is small in the technical scheme, the problem of latch jamming generated in the gear separation and engagement process due to the fact that a coaxial multi-gear structure is not needed is solved, and the reversing and gear shifting function is stable and smooth.
Description
Technical Field
The utility model relates to the technical field of CVT gearboxes, in particular to a reversing gear shifting mechanism applied to a CVT gearbox.
Background
The CVT gear box generally adopts a continuously variable transmission structure with movable teeth, that is, force transmission is performed through at least one movable wheel disc set and a driving belt, and the structure for reversing and shifting is designed in a driven wheel part in a relatively matched manner, so that the coaxial multi-gear structure is axially movable in a mode commonly adopted at present to realize reversing and shifting by changing different driving gears with driven wheels, but in practical application, the problem of blocking and tooth blocking is easily generated during reversing and shifting due to the fact that the multistage gear transmission structure is involved, and the problem of influence on the smoothness of reversing and shifting and the service life of gears is large.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a reversing and shifting mechanism with a more stable and smooth reversing and shifting function, which is applied to a CVT gearbox, and is used for overcoming the technical defects.
The specific technical scheme is as follows:
a reverse shift mechanism for use in a CVT transmission, comprising:
the driven wheel assembly comprises a driven wheel used for being connected with a transmission belt and used as an external power input member, and the lower end of the driven wheel assembly is provided with a linkage gear;
the gear sliding sleeve is positioned below the driven wheel and comprises two reversing gears which are coaxially connected and oppositely arranged, and at least one part of the linkage gear extends into the space between the two reversing gears;
one end of the shifting sheet is connected with the gear sliding sleeve and is used for driving the gear sliding sleeve to axially move so as to switch the meshing state between the two reversing gears and the linkage gear and adjust the rotation direction of the gear sliding sleeve, wherein the rotation direction comprises forward and reverse rotation states and non-rotation states;
the control rod is connected with the poking piece through a connecting rod transmission and is used for driving the poking piece to move along the axis direction of the gear sliding sleeve.
Preferably, the driven wheel assembly comprises a rotating shaft, the linkage gear is arranged at the lower end of the rotating shaft, the driven wheel comprises an upper wheel disc and a lower wheel disc which are arranged up and down, the lower wheel disc is fixedly assembled on the rotating shaft, the upper wheel disc can be longitudinally movably assembled on the rotating shaft, and one end of the transmission belt is arranged between the upper wheel disc and the lower wheel disc.
Preferably, an upper cover is fixedly arranged on the upper wheel disc, a spring is arranged in the upper cover, a round pressing plate is fixedly arranged at the upper end of the rotating shaft, and the upper end and the lower end of the spring are respectively abutted against the upper end face of the upper wheel disc and the lower end face of the round pressing plate so as to provide a pretightening force for the upper wheel disc to move in the direction of the lower wheel disc.
Preferably, the gear sliding sleeve comprises an output shaft and two reversing gears sleeved on the output shaft, the output shaft is also provided with a sliding gear capable of axially sliding, the sliding gear is positioned between the two reversing gears, the periphery of the sliding gear is also recessed in a circumferential direction to form an annular groove, one end of the shifting piece is provided with a semicircular notch structure matched with the annular groove in shape, and the semicircular notch structure is embedded in the annular groove.
Preferably, a gap is formed between the sliding gear and the two reversing gears.
Preferably, the linkage gear is a bevel gear, and bevel gear teeth matched with the linkage gear are respectively arranged on one side of the two reversing gears in opposite directions.
The beneficial effects of the technical scheme are that:
the reversing gear shifting mechanism applied to the CVT gearbox comprises a driven wheel assembly, a gear sliding sleeve, a shifting piece and a control rod, wherein a driving belt is connected to the driven wheel assembly to input external power, a linkage gear is driven to rotate along with a driving wheel and then transmit power to the gear sliding sleeve, the shifting piece drives the gear sliding sleeve to axially move, the meshing relationship between two reversing gears of the gear sliding sleeve and the linkage gear is changed, and then the overall rotation direction of the gear sliding sleeve is changed, so that the technical purpose of reversing gear shifting is achieved, the number of gears for reversing gear shifting in the CVT gearbox is small, the problem of latch jamming generated in the gear separation and meshing process is avoided, and the reversing gear shifting function is stable and smooth.
Drawings
FIG. 1 is a perspective view of a reverse shift mechanism of the present utility model as applied to a CVT transmission;
FIG. 2 is a side elevational view of the reverse gear mechanism of the present utility model as applied to a CVT transmission;
FIG. 3 is a perspective view of the reversing shift mechanism of the present utility model as applied to a CVT transmission with the driven wheel assembly removed;
FIG. 4 is a top view of the reversing shift mechanism of the present utility model as applied to a CVT transmission with the driven wheel assembly removed;
fig. 5 is a partial exploded view of the reverse shift mechanism of the present utility model applied to a CVT transmission.
Detailed Description
In order to make the technical means, the creation features, the achievement of the purpose and the effect of the present utility model easy to understand, the present utility model is specifically described below with reference to the accompanying drawings.
Referring to fig. 1 to 5, the reversing shift mechanism applied to a CVT transmission provided in this embodiment includes:
the driven wheel assembly 1 comprises a driven wheel connected with a transmission belt and used as an external power input member, and the lower end of the driven wheel assembly 1 is provided with a linkage gear 2;
the gear sliding sleeve 3 is positioned below the driven wheel, the gear sliding sleeve 3 comprises two reversing gears 7 which are coaxially connected and oppositely arranged, and at least one part of the linkage gear 2 extends into the space between the two reversing gears 7;
one end of the shifting sheet 4 is connected with the gear sliding sleeve 3 and is used for driving the gear sliding sleeve 3 to axially move so as to switch the meshing state between the two reversing gears 7 and the linkage gear 2 and adjust the rotation direction of the gear sliding sleeve 3, wherein the rotation direction comprises forward and reverse rotation states and non-rotation states;
the control rod 6 is in transmission connection with the poking piece 4 through the connecting rod 5 and is used for driving the poking piece 4 to move along the axial direction of the gear sliding sleeve 3;
in particular applications, the forward, reverse and no-rotation conditions of the gear sleeve 3 correspond to the forward, reverse and neutral gears of the CVT gearbox applied to the vehicle.
Based on the technical scheme, the reversing gear shifting mechanism applied to the CVT gearbox comprises the driven wheel assembly 1, the gear sliding sleeve 3, the shifting piece 4 and the control rod 6, wherein the driven wheel assembly 1 is connected with a transmission belt to input external power, the linkage gear 2 rotates along with the driven wheel and then transmits power to the gear sliding sleeve 3, the shifting piece 4 drives the gear sliding sleeve 3 to axially move, the meshing relationship between two reversing gears 7 of the gear sliding sleeve 3 and the linkage gear 2 is changed, and the overall rotation direction of the gear sliding sleeve 3 is changed, so that the technical purpose of reversing gear shifting is achieved, the number of gears for reversing gear shifting in the CVT gearbox is small, the problem that gear separation and tooth clamping in the meshing process are generated without designing a coaxial multi-gear structure is solved, and the reversing gear shifting function is stable and smooth.
In a preferred embodiment, as shown in fig. 5, the driven wheel assembly 1 includes a rotating shaft 10, a linkage gear 2 is mounted at the lower end of the rotating shaft 10, the driven wheel includes an upper wheel disc 12 and a lower wheel disc 11 which are arranged up and down, the lower wheel disc 11 is fixedly mounted on the rotating shaft 10, the upper wheel disc 12 is longitudinally movably mounted on the rotating shaft 10, one end of a driving belt is arranged between the upper wheel disc 12 and the lower wheel disc 11, an upper cover 13 is fixedly mounted on the upper wheel disc 12, a spring 14 is accommodated in the upper cover 13, a circular pressing plate 15 is fixedly mounted at the upper end of the rotating shaft 10, and the upper end and the lower end of the spring 14 respectively abut against the upper end face of the upper wheel disc 12 and the lower end face of the circular pressing plate 15 so as to provide a pre-tightening force for the upper wheel disc 12 to move towards the lower wheel disc 11. Thereby forming a movable tooth stepless speed change structure in the CVT gearbox.
As a further preferred embodiment, the gear sliding sleeve 3 comprises an output shaft 9 and two reversing gears 7 sleeved on the output shaft 9, the output shaft 9 is also provided with a sliding gear 8 capable of axially sliding, the sliding gear 8 is positioned between the two reversing gears 7, the periphery of the sliding gear 8 is also provided with an annular groove 16 in a sunk manner, one end of the shifting piece 4 is provided with a semicircular notch structure matched with the annular groove 16 in shape, and the semicircular notch structure is embedded in the annular groove 16.
As a further preferred embodiment, there is a gap between the sliding gear 8 and both reversing gears 7. Furthermore, the linkage gear 2 is a bevel gear, and conical gear teeth matched with the linkage gear 2 are respectively arranged on one side of the two reversing gears 7 in opposite directions, so that meshing and separating actions are smoother.
In addition, the reversing gear mechanism is assembled in a box body of the CVT gearbox, and a receiving groove and a bearing for receiving each member are formed in the box body to ensure stable movement of each member, which is a conventional design in the art, so that redundant description is omitted here.
The foregoing description of the preferred embodiment of the utility model is merely illustrative of the utility model and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. A reverse shift mechanism for use in a CVT transmission, comprising:
the driven wheel assembly (1) comprises a driven wheel which is used for being connected with a transmission belt and used as an external power input member, and the lower end of the driven wheel assembly (1) is provided with a linkage gear (2);
the gear sliding sleeve (3) is positioned below the driven wheel, the gear sliding sleeve (3) comprises two reversing gears (7) which are coaxially connected and oppositely arranged, and at least one part of the linkage gear (2) stretches into the space between the two reversing gears (7);
one end of the shifting sheet (4) is connected with the gear sliding sleeve (3) and is used for driving the gear sliding sleeve (3) to axially move so as to switch the meshing state between the two reversing gears (7) and the linkage gear (2) and adjust the rotation direction of the gear sliding sleeve (3), wherein the rotation direction comprises forward and reverse rotation states and non-rotation states;
the control rod (6) is connected with the poking piece (4) in a transmission way through the connecting rod (5) and is used for driving the poking piece (4) to move along the axial direction of the gear sliding sleeve (3).
2. The reversing gear mechanism applied to a CVT transmission as claimed in claim 1, wherein the driven wheel assembly (1) includes a rotating shaft (10), the linkage gear (2) is mounted at a lower end of the rotating shaft (10), the driven wheel includes an upper wheel disc (12) and a lower wheel disc (11) which are arranged up and down, the lower wheel disc (11) is fixedly assembled on the rotating shaft (10), the upper wheel disc (12) is longitudinally movably assembled on the rotating shaft (10), and one end of the transmission belt is arranged between the upper wheel disc (12) and the lower wheel disc (11).
3. The reversing gear shifting mechanism applied to a CVT gearbox according to claim 2, wherein an upper cover (13) is fixedly arranged on the upper wheel disc (12), a spring (14) is arranged in the upper cover (13), a circular pressing plate (15) is fixedly arranged at the upper end of the rotating shaft (10), and the upper end and the lower end of the spring (14) are respectively abutted against the upper end face of the upper wheel disc (12) and the lower end face of the circular pressing plate (15) so as to provide a pretightening force for the upper wheel disc (12) to move towards the direction of the lower wheel disc (11).
4. The reversing gear shifting mechanism applied to a CVT gearbox according to claim 1, wherein the gear sliding sleeve (3) comprises an output shaft (9) and two reversing gears (7) sleeved on the output shaft (9), the output shaft (9) is further provided with a sliding gear (8) capable of axially sliding, the sliding gear (8) is positioned between the two reversing gears (7), the periphery of the sliding gear (8) is further recessed annularly to form an annular groove (16), one end of the shifting piece (4) is provided with a semicircular notch structure matched with the annular groove (16), and the semicircular notch structure is embedded in the annular groove (16).
5. A reverse gear shifting mechanism for use in a CVT gearbox according to claim 4 characterised in that there is a gap between the sliding gear (8) and both of the reversing gears (7).
6. The reversing gear mechanism applied to a CVT gearbox according to claim 5, wherein the linkage gear (2) is a bevel gear, and bevel gear teeth matched with the linkage gear (2) are respectively arranged on one side of the two reversing gears (7) opposite to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320394159.0U CN219432412U (en) | 2023-02-27 | 2023-02-27 | Reversing gear shifting mechanism applied to CVT gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320394159.0U CN219432412U (en) | 2023-02-27 | 2023-02-27 | Reversing gear shifting mechanism applied to CVT gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219432412U true CN219432412U (en) | 2023-07-28 |
Family
ID=87343745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320394159.0U Active CN219432412U (en) | 2023-02-27 | 2023-02-27 | Reversing gear shifting mechanism applied to CVT gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219432412U (en) |
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2023
- 2023-02-27 CN CN202320394159.0U patent/CN219432412U/en active Active
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