CN217271795U

CN217271795U - Auxiliary box gear shifting structure of transmission, transmission and hybrid electric vehicle

Info

Publication number: CN217271795U
Application number: CN202221040125.3U
Authority: CN
Inventors: 董利杰; 贾军风; 董凯立
Original assignee: If Technology Co Ltd
Current assignee: If Technology Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-08-23
Anticipated expiration: 2032-04-28

Abstract

The utility model provides an auxiliary box gear shifting structure of a transmission, the transmission and a hybrid electric vehicle, wherein, the auxiliary box gear shifting structure of the transmission comprises an auxiliary box shell, an output shaft arranged in the auxiliary box shell and a main box output shaft partially positioned in the auxiliary box shell; the output shaft and the output shaft of the main box are coaxially arranged, and the output shaft of the main box is in transmission connection with a speed regulating mechanism; the auxiliary box gear shifting structure further comprises a gear shifting sliding sleeve arranged on the output shaft in a sliding mode along the axial direction of the output shaft, the gear shifting sliding sleeve is provided with a first gear directly in transmission connection with the output shaft of the main box, and a second gear in transmission connection with the output shaft of the main box through a speed regulating mechanism. Vice case shift structure of derailleur, utilize the sliding sleeve that shifts to shift between two fender positions on the output shaft to make the sliding sleeve that shifts to be connected with main case output shaft transmission, or be connected with main case output shaft transmission through speed adjusting mechanism, thereby realize that the conversion that high fender position and low gear position do benefit to the complexity that reduces shift structure.

Description

Auxiliary box gear shifting structure of transmission, transmission and hybrid electric vehicle

Technical Field

The utility model relates to a derailleur technical field, in particular to auxiliary box shift structure of derailleur.

The utility model discloses still relate to a derailleur to and a mixed moving automobile.

Background

Along with the change of consciousness and the improvement of living standard of people, vehicle manufacturers must consider humanization, vehicle intellectualization and fuel economy in the design process, and ensure the safety and comfort of the driving process. In view of this, each vehicle manufacturer designs a transmission assembly with more gears and a smaller gear step in order to satisfy fuel economy, but because the installation space of the transmission is limited, the transmission cannot be designed to be too large, so the number of gears is increased by adding an auxiliary box, and meanwhile, the operation convenience and the structural simplicity of the whole transmission mechanism need to be ensured so as to improve the transmission performance of the transmission mechanism.

At present, the main structure of a multi-gear double-intermediate-shaft transmission of a commercial vehicle is a structure of a main box and an auxiliary box, and specifically, the output rotating speed and the output torque of the main box are transmitted to an output flange through the auxiliary box of the transmission in different speed ratios. In the two-gear structure of the auxiliary box, the switching of the high gear and the low gear is mainly performed by using a planetary row or a synchronizer. The whole gear shifting and debugging structure is complex, so that the manufacturing cost of the auxiliary box of the transmission is high, and the whole size is large.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a vice case shift structure of derailleur to do benefit to and reduce the complexity of shift structure.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an auxiliary box gear shifting structure of a transmission comprises an auxiliary box shell, an output shaft arranged in the auxiliary box shell, and a main box output shaft partially arranged in the auxiliary box shell; the output shaft and the main box output shaft are coaxially arranged, and the main box output shaft is in transmission connection with a speed regulating mechanism; the auxiliary box gear shifting structure further comprises a gear shifting sliding sleeve arranged on the output shaft in an axial sliding mode, the gear shifting sliding sleeve is provided with a first gear directly connected with the main box output shaft in a transmission mode, and a second gear connected with the main box output shaft in a transmission mode is arranged through the speed regulating mechanism.

Furthermore, an internal spline is constructed on the inner wall of the gear shifting sliding sleeve, an external spline is constructed on the outer wall of the gear shifting sliding sleeve, the gear shifting sliding sleeve is connected onto the output shaft through the internal spline, and the gear shifting sliding sleeve is in transmission connection with the output shaft of the main box through the external spline.

Furthermore, a main box output shaft gear is arranged at one end, facing the output shaft, of the main box output shaft, the main box output shaft gear is meshed with the speed regulating mechanism, and a first spline connecting part used for being connected with the external spline is arranged on the main box output shaft gear.

Further, the speed regulating mechanism comprises a middle shaft assembly, the middle shaft assembly comprises a middle shaft arranged at intervals between the middle shaft and the output shaft along the radial direction of the output shaft, and an input gear and an output gear which are arranged on the middle shaft; the input gear is in transmission connection with the main box output shaft, and the output gear can be in transmission connection with the gear shifting sliding sleeve when the second gear is located.

Furthermore, the output shaft is rotatably provided with a low-gear driven gear, the low-gear driven gear is meshed with the output gear and is provided with a second spline connecting part used for being connected with the gear shifting sliding sleeve.

Further, the intermediate shaft assemblies are arranged in two groups at intervals around the axis of the output shaft.

Compared with the prior art, the utility model discloses following advantage has:

vice case shift structure of derailleur, utilize the sliding sleeve that shifts to shift between two fender positions on the output shaft to make shift sliding sleeve and main box output shaft transmission be connected, or be connected through speed adjusting mechanism and main box output shaft transmission, thereby realize the conversion that the high fender position kept off the position and low gear position, do benefit to the complexity that reduces shift structure.

The utility model discloses still relate to a derailleur, be equipped with vice gearbox in it. The auxiliary gearbox is internally provided with the auxiliary gearbox gear shifting structure of the transmission, so that the structure in the auxiliary gearbox is simplified.

Furthermore, the utility model also provides a hybrid vehicle, be equipped with foretell derailleur in the hybrid vehicle.

Furthermore, an engine unit and a motor unit are arranged in the hybrid electric vehicle, and the engine unit and the motor unit are respectively in transmission connection with a transmission input shaft of the transmission.

Further, the electric machine unit comprises a generator in drive connection with a fixed gear on the transmission input shaft and an electric motor in drive connection with a main box gear on the transmission input shaft.

Compared with the prior art, thoughtlessly move car, through being equipped with foretell derailleur, can improve the smoothness nature of shifting.

In addition, when the auxiliary box is shifted, the generator or the motor can regulate the speed of the output shaft of the main box, and when the rotating speed of the output shaft of the main box is matched with that of the output shaft of the auxiliary box, the shifting action of the auxiliary box is carried out, so that the shifting can be conveniently and smoothly completed. The motor in the generator and the motor can be used as power output, and the generator and the motor can be combined to carry out power output.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a sub-box shift structure of a transmission according to a first embodiment of the present invention;

fig. 2 is a working schematic diagram of the hybrid electric vehicle according to the third embodiment of the present invention.

Description of reference numerals:

1. a transmission; 2. an engine unit; 31. a transmission input shaft; 32. a main box gear; 33. fixing a gear; 301. a generator; 302. an electric motor; 4. a sub-tank case; 5. a main box output shaft; 50. a main box output shaft gear; 500. a first spline connection; 6. a shifting sliding sleeve; 700. an intermediate shaft; 701. an input gear; 702. an output gear; 8. an output shaft; 80. a low-gear driven gear; 800. a second spline connection; 801. an output shaft flange.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection may be fixed, detachable, or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The present embodiment relates to a sub-tank shift structure of a transmission, which integrally includes a sub-tank case 4, an output shaft 8 provided in the sub-tank case 4, and a main-tank output shaft 5 partially provided in the sub-tank case 4.

Wherein, output shaft 8 and main case output shaft 5 are coaxial to be arranged, and the transmission is connected with speed adjusting mechanism on main case output shaft 5. The auxiliary box gear shifting structure further comprises a gear shifting sliding sleeve 6 which is arranged on the output shaft 8 in a sliding mode along the axial direction of the output shaft 8, and the gear shifting sliding sleeve 6 is provided with a first gear which is directly in transmission connection with the main box output shaft 5 and a second gear which is in transmission connection with the main box output shaft 5 through a speed regulating mechanism.

According to the structure, the shifting sliding sleeve 6 is switched between two gears by utilizing the sliding displacement of the shifting sliding sleeve 6 on the output shaft 8, so that the shifting sliding sleeve 6 is in transmission connection with the main box output shaft 5, or is in transmission connection with the main box output shaft 5 through the speed regulating mechanism, thereby realizing the switching between a high gear and a low gear, and being beneficial to reducing the complexity of a shifting structure.

Based on the above overall design, an exemplary structure of the auxiliary box shift structure of the transmission of this embodiment is as shown in fig. 1, an inner spline is configured on an inner wall of the shift sliding sleeve 6, an outer spline is configured on an outer wall of the shift sliding sleeve 6, the shift sliding sleeve 6 is connected to the output shaft 8 through the inner spline, and the shift sliding sleeve 6 is in transmission connection with the main box output shaft 5 through the outer spline.

It will be appreciated that the shift sleeve 6 is connected to the output shaft 8 by internal splines, so that the shift sleeve 6 can slide axially on the output shaft 8. In order to realize the axial movement of the shifting sliding sleeve 6 and simplify the internal structure of the auxiliary box, the auxiliary box of the embodiment is provided with a shifting fork, and the shifting fork is used for changing the position of the shifting sliding sleeve 6, so that the shifting sliding sleeve 6 can be directly in transmission connection with the main box output shaft 5 or in transmission connection with the main box output shaft 5 through a speed regulating mechanism, and further the conversion of high and low gears is realized.

Specifically, in this embodiment, a main box output shaft gear 50 is disposed at one end of the main box output shaft 5 facing the output shaft 8, the main box output shaft gear 50 is engaged with the speed adjusting mechanism, and a first spline connection portion 500 for connecting with an external spline is disposed on the main box output shaft gear 50. When the shifting fork moves the shifting sliding sleeve 6, the shifting sliding sleeve 6 is meshed with the first spline connecting part 500 on the main box output shaft gear 50, so that the shifting sliding sleeve 6 is directly in transmission connection with the main box output shaft 5, and because the main box output shaft 5 and the output shaft 8 are coaxially arranged, the main box output shaft 5 can directly drive the output shaft 8 to rotate, and at the moment, the transmission 1 is located at a first gear, namely a high gear.

As shown in fig. 1, to realize the shift from the high gear to the low gear, the speed adjusting mechanism includes an intermediate shaft 700 assembly, the intermediate shaft 700 assembly includes an intermediate shaft 700 arranged at a distance from the output shaft 8 in the radial direction of the output shaft 8, and an input gear 701 and an output gear 702 provided on the intermediate shaft 700. It will be appreciated that the input gear 701 is drivingly connected to the main box output shaft 5 and the output gear 702 is drivingly connectable to the shift sleeve 6 in the second gear.

When the shift sliding sleeve 6 is meshed with the output gear 702 on the intermediate shaft 700, the main box output shaft 5 drives the main box output shaft gear 50 thereon to rotate, the main box output shaft gear 50 is meshed with the input gear 701 to rotate, namely, the intermediate shaft 700 rotates, the output gear 702 on the intermediate shaft 700 can drive the output shaft 8 to rotate, and the transmission 1 is located at the second gear, namely, the low gear.

Because the diameters of the main box output shaft gear 50, the input gear 701 and the output gear 702 are different, and the rotating speed proportion is inversely proportional to the gear diameter, the rotating speed of the main box output shaft 5 is changed by the speed regulating mechanism and then is output to the output shaft 8, so that the purpose of reducing the speed is achieved.

In addition, in this embodiment, in addition to the above-mentioned embodiment in which the shift sliding sleeve 6 is engaged with the output gear 702, in order to improve the shift precision, as a preferred embodiment, the output shaft 8 is rotatably provided with the low-gear driven gear 80, the low-gear driven gear 80 is engaged with the output gear 702, and the low-gear driven gear 80 is provided with the second spline connection portion 800 for connecting with the shift sliding sleeve 6. So when shift sliding sleeve 6 is removed the back by the shift fork, shift sliding sleeve 6 then with low gear driven gear 80 meshing, through setting up low gear driven gear 80, can improve shift sliding sleeve 6 and shift the precision of position to improve the smoothness nature of shifting. When the transmission 1 is in the low gear, the transmission conditions in the auxiliary box are the same as those described above, and will not be described again.

In addition, to ensure the output stability of the sub-tank shift structure, the intermediate shaft 700 assemblies are arranged in two groups at intervals around the axis of the output shaft 8. In addition, an output shaft flange 801 is provided on the sub-tank case 4 for connection of the transmission 1 to other devices.

The auxiliary box gear shifting structure of the transmission of the embodiment utilizes the shifting fork to change the position of the gear shifting sliding sleeve 6 on the output shaft 8, so that the gear shifting sliding sleeve 6 is in transmission connection with the main box output shaft 5, or is in transmission connection with the main box output shaft 5 through a speed regulating mechanism, and the conversion of high gears and low gears is realized, thereby being beneficial to reducing the complexity of the gear shifting structure.

Example two

The present embodiment relates to a transmission 1 in which a sub-transmission is provided. The auxiliary transmission case is provided with the auxiliary transmission case shifting structure of the transmission in the first embodiment, so that the structure in the auxiliary transmission case is simplified.

EXAMPLE III

The embodiment relates to a hybrid electric vehicle, wherein the transmission 1 is arranged in the hybrid electric vehicle. Specifically, as shown in fig. 2, the hybrid vehicle is provided with an engine unit 2 and a motor unit, and the engine unit 2 and the motor unit are respectively in transmission connection with a transmission input shaft 31 of the transmission 1.

In this embodiment, the electrical machine units comprise a generator 301 and an electric motor 302, the generator 301 being in driving connection with the fixed gear 33 on the transmission input shaft 31, and the electric motor 302 being in driving connection with the main gear 32 on the transmission input shaft 31. Specifically, the output shafts of the generator 301 and the motor 302 are provided with gears, and the gears on the output shafts are meshed with the fixed gear 33 or the main box gear 32 to realize the transmission setting. It can be understood that when the auxiliary box is shifted, the generator 301 or the motor 302 adjusts the speed of the main box output shaft gear 50 or the low-gear driven gear 80 through the transmission input shaft 31 and the main box gear, and when the rotating speed of the main box output shaft 5 is matched with the rotating speed of the auxiliary box output shaft 8, the auxiliary box is shifted, so that the shifting can be smoothly completed. Further, the generator 301 and the motor 302 may be used as power outputs, or both may be used together to output power. The hybrid electric vehicle of the embodiment can improve the shifting smoothness by providing the transmission 1.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary box gear shifting structure of a transmission comprises an auxiliary box shell (4), an output shaft (8) arranged in the auxiliary box shell (4), and a main box output shaft (5) partially positioned in the auxiliary box shell (4); the method is characterized in that:

the output shaft (8) and the main box output shaft (5) are coaxially arranged, and the main box output shaft (5) is in transmission connection with a speed regulating mechanism;

the auxiliary box gear shifting structure further comprises an edge, the axial sliding of the output shaft (8) is arranged on the gear shifting sliding sleeve (6) on the output shaft (8), the gear shifting sliding sleeve (6) is provided with a first gear directly connected with the main box output shaft (5) in a transmission mode, and the speed regulating mechanism is connected with a second gear in the transmission mode of the main box output shaft (5).

2. The range shift structure of a transmission according to claim 1, wherein:

the inner wall of the gear shifting sliding sleeve (6) is provided with an internal spline, the outer wall of the gear shifting sliding sleeve (6) is provided with an external spline, the gear shifting sliding sleeve (6) is connected onto the output shaft (8) through the internal spline, and the gear shifting sliding sleeve (6) is in transmission connection with the main box output shaft (5) through the external spline.

3. The range shift structure of a transmission according to claim 2, wherein:

the main box output shaft (5) faces one end of the output shaft (8) and is provided with a main box output shaft gear (50), the main box output shaft gear (50) is meshed with the speed regulating mechanism and is connected with the speed regulating mechanism, and a first spline connecting part (500) used for being connected with an outer spline is arranged on the main box output shaft gear (50).

4. The range shift structure of a transmission according to any one of claims 1 to 3, characterized in that:

the speed regulating mechanism comprises a middle shaft assembly, the middle shaft assembly comprises a middle shaft (700) arranged at intervals between the middle shaft assembly and the output shaft (8) along the radial direction of the output shaft (8), and an input gear (701) and an output gear (702) which are arranged on the middle shaft (700);

the input gear (701) is in transmission connection with the main box output shaft (5), and the output gear (702) can be in transmission connection with the gear shifting sliding sleeve (6) when the gear shifting sliding sleeve is located at the second gear.

5. The range shift structure of a transmission according to claim 4, wherein:

the output shaft (8) is provided with a low-gear driven gear (80) in a rotating mode, the low-gear driven gear (80) is meshed with the output gear (702) and connected with the output gear, and a second spline connecting portion (800) used for being connected with the gear shifting sliding sleeve (6) is arranged on the low-gear driven gear (80).

6. The range shift structure of a transmission according to claim 4, wherein:

the intermediate shaft assemblies are arranged in two groups spaced around the axis of the output shaft (8).

7. A transmission having a range box disposed within the transmission, characterized by:

the range section is provided with a range section shift structure of the transmission according to any one of claims 1 to 6.

8. A hybrid vehicle, characterized in that:

the hybrid vehicle is provided with the transmission of claim 7.

9. The hybrid vehicle according to claim 8, characterized in that:

the hybrid electric vehicle is provided with an engine unit (2) and a motor unit, wherein the engine unit (2) and the motor unit are respectively in transmission connection with a transmission input shaft (31) of the transmission (1).

10. The hybrid vehicle according to claim 9, characterized in that:

the motor unit comprises a generator (301) and an electric motor (302), wherein the generator (301) is in transmission connection with a fixed gear (33) on a transmission input shaft (31), and the electric motor (302) is in transmission connection with a main box gear (32) on the transmission input shaft (31).