CN217908961U - Transfer device and model car - Google Patents

Abstract

The utility model discloses a transfer gear and model car, transfer gear includes: a drive motor; the movable gear set comprises a first shaft, a front drive gear, a rear drive gear, a transfer gear, a gear shifting gear and a connecting pin; when the tooth part of the shifting gear is positioned on the side far away from the front drive gear, the shifting gear can be meshed with the shell of the movable gear set; the shift gear is simultaneously engageable with the front drive gear, the transfer gear and the rear drive gear; the connecting pin is used for fixing the front drive gear and the first shaft, or the connecting pin is used for fixing the transfer gear and the first shaft; the motion modes of the front driving gear and the rear driving gear can be adjusted by changing the connection relation between the shifting gear and the front driving gear and the rear driving gear respectively by moving the shifting gear.

Description

Transfer device and model car

Technical Field

The utility model relates to a vehicle transmission technical field especially relates to a power distribution device and model car.

Background

The existing model four-wheel drive vehicle can be switched back and forth between a front drive mode and a four-wheel drive mode, and different modes are adopted on different roads so as to improve the pleasure of remotely controlling the model four-wheel drive vehicle. However, as society develops continuously, people have higher requirements on the driving mode of the model four-wheel drive vehicle.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a transfer gear and model car, this transfer gear has two kinds of different assembly modes, and the model four-wheel drive car under an assembly mode can switch between forerunner's mode, four-wheel drive mode and brake mode; the model four-wheel drive vehicle in another assembly mode can be switched among a front drive mode, a four-wheel drive mode and a rear drive mode; the pleasure of the remote control model four-wheel drive vehicle is improved.

In a first aspect, an embodiment of the present invention provides a transfer device, the transfer device includes:

a drive motor;

the movable gear set comprises a first shaft, a front drive gear, a rear drive gear, a transfer gear, a gear shifting gear and a connecting pin, the driving motor is used for driving the first shaft to rotate, the front drive gear, the rear drive gear and the transfer gear are all sleeved on the first shaft, the transfer gear is positioned between the front drive gear and the rear drive gear, the front drive gear is used for driving front wheels of the model vehicle, and the rear drive gear is used for driving rear wheels of the model vehicle;

the shifting gear is sleeved on the transfer gear; the tooth part of the gear shifting gear is positioned on one side far away from the front drive gear, or the tooth part of the gear shifting gear is positioned on one side close to the front drive gear; when the tooth part of the gear shifting gear is positioned on the side far away from the front drive gear, the gear shifting gear can be meshed with the shell of the movable gear set;

the shift gear is capable of moving along the axial direction of the first shaft, the shift gear is capable of meshing with the transfer gear and the front drive gear at the same time, the shift gear is capable of meshing with the transfer gear and the rear drive gear at the same time, and the shift gear is capable of meshing with the front drive gear, the transfer gear and the rear drive gear at the same time;

the connecting pin is used for fixing the front drive gear and the first shaft, or the connecting pin is used for fixing the transfer gear and the first shaft.

According to the utility model discloses transfer device has following technological effect at least: the driving motor drives the first shaft to rotate, and under different assembly conditions of the gear shifting gear and the connecting pin, the connection relation between the gear shifting gear and the front driving gear and the connection relation between the gear shifting gear and the rear driving gear can be changed by moving the gear shifting gear, so that the motion modes of the front driving gear and the rear driving gear are adjusted.

According to the utility model discloses a some embodiments, work as the connecting pin will the forerunner gear with first axle fixed connection, just the tooth position of gear shift gear is in keeping away from during one side of forerunner gear, the loose gear group is in first assembled state, the loose gear group is in can make a round trip to switch between forerunner mode, four-wheel drive mode and brake mode three under the first assembled state, wherein:

when the shifting gear is meshed with the transfer gear and the front drive gear at the same time, the movable gear set enters the front drive mode, and the rotation of the first shaft can drive the front drive gear to rotate;

when the shifting gear is simultaneously meshed with the transfer gear, the front driving gear and the rear driving gear, the movable gear set enters the four-wheel drive mode, and the rotation of the first shaft can drive the front driving gear, the shifting gear, the transfer gear and the rear driving gear to rotate;

when the shifting gear is simultaneously meshed with the transfer gear and the rear drive gear and the shifting gear is meshed with the shell of the movable gear set, the movable gear set enters the brake mode, and the shell can block the rotation of the rear drive gear.

According to some embodiments of the present invention, when the connecting pin will transfer gear with first axle fixed connection, just the tooth position of the gear shift gear is close to when one side of forerunner gear, the activity gear train is in the second assembled state, the activity gear train can make a round trip to switch under the second assembled state between forerunner mode, four-wheel drive mode and rear-wheel drive mode three, wherein:

when the shifting gear is meshed with the transfer gear and the front drive gear at the same time, the movable gear set enters the front drive mode, and the rotation of the first shaft can drive the transfer gear to rotate so as to drive the shifting gear and the front drive gear to rotate;

when the shifting gear is meshed with the transfer gear, the front drive gear and the rear drive gear at the same time, the movable gear set enters the four-wheel drive mode, and the rotation of the first shaft can drive the transfer gear to rotate so as to drive the shifting gear, the front drive gear and the rear drive gear to rotate;

when the shifting gear is meshed with the transfer gear and the rear-drive gear at the same time, the movable gear set enters the rear-drive mode, and the rotation of the first shaft can drive the transfer gear to rotate so as to drive the shifting gear and the rear-drive gear to rotate.

According to some embodiments of the present invention, the first shaft is provided with a first through hole and a second through hole, the front drive gear is provided with a groove, and the transfer gear is provided with a connecting hole; when the connecting pin is positioned in the first through hole and the groove at the same time, the front driving gear is fixedly connected with the first shaft; when the connecting pin is simultaneously positioned in the second through hole and the connecting hole, the transfer gear is fixedly connected with the first shaft.

According to some embodiments of the present invention, the transfer device further comprises a fixed gear set, the fixed gear set comprising a first gear, a second gear and a second shaft, the first gear and the second gear both being sleeved and fixed to the second shaft; the movable gear set further comprises a third gear and a fourth gear, the third gear and the fourth gear are all sleeved on the first shaft, the first gear is meshed with the third gear, the second gear is meshed with the fourth gear, and the driving motor can drive the second shaft to rotate so as to drive the first shaft to rotate.

According to some embodiments of the present invention, the movable gear set further comprises a speed change gear, the speed change gear is sleeved on and meshed with the first shaft, the third gear and the fourth gear can rotate relative to the first shaft, and the speed change gear is located between the third gear and the fourth gear; the transmission gear is movable in an axial direction of the first shaft to mesh with the third gear or the fourth gear; when the speed change gear is meshed with the third gear, the third gear is relatively fixed with the first shaft; when the speed change gear is engaged with the fourth gear, the fourth gear is relatively fixed with respect to the first shaft.

According to the utility model discloses a some embodiments, the number of teeth of first gear is N1, the number of teeth of second gear is N2, the number of teeth of third gear is N3, the number of teeth of fourth gear is N4, satisfies:

according to some embodiments of the utility model, transfer device still includes first shift fork, first shift fork centre gripping in gear shifting, first shift fork can be followed the axis direction of primary shaft removes and then drives gear shifting removes.

According to some embodiments of the utility model, transfer device still includes the second shift fork, the second shift fork centre gripping in change gear, the second shift fork can be followed the axis direction of primary shaft removes and then drives change gear removes.

In a second aspect, embodiments of the present invention further provide a model car, including a transfer device according to the present invention.

According to the utility model discloses model car has following technological effect at least: the model car adopts this transfer device, and driving motor drives the primary shaft and rotates, under the different assembly condition of gear shifting gear and connecting pin, can change the gear shifting gear respectively with the front-wheel drive gear with the rear-wheel drive gear the relation of connection and then adjust the motion pattern of front-wheel drive gear and rear-wheel drive gear through removing the gear shifting gear for the model car has richer motion pattern.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a transfer case of some embodiments of the present invention;

FIG. 2 is a schematic illustration of a transfer case with a hidden housing according to some embodiments of the present invention;

fig. 3 is a schematic diagram of the connection of the movable gear set and the fixed gear set according to some embodiments of the present invention;

fig. 4 is an exploded view of a movable gear set according to some embodiments of the present invention;

fig. 5 is a schematic representation of a forward drive mode of the loose gear set of some embodiments of the present invention in a first assembled state;

fig. 6 is a schematic structural view of a four-wheel drive mode of the loose-gear set of some embodiments of the present invention in a first assembled state;

fig. 7 is a schematic structural view of a braking mode of the loose gear set of some embodiments of the present invention in a first assembled state;

fig. 8 is a schematic structural view of a shift gear and housing of some embodiments of the present invention;

fig. 9 is a schematic illustration of a forward drive mode of the movable gear set of some embodiments of the present invention in a second assembled state;

fig. 10 is a schematic structural view of a four-drive mode of the movable gear set of some embodiments of the present invention in a second assembled state;

fig. 11 is a schematic diagram of a rear drive mode of the movable gear set according to some embodiments of the present invention in a second assembled state.

Reference numerals:

the driving motor 100, the outer shell 110, the third shaft 120 and the shell inner teeth 130;

the movable gear set 200, the first shaft 210, the first through hole 211, the second through hole 212, the fourth convex portion 213, the front drive gear 220, the concave groove 221, the second convex portion 222, the rear drive gear 230, the third convex portion 231, the transfer gear 240, the connection hole 241, the first convex portion 242, the shift gear 250, the first concave portion 251, the connection pin 260, the third gear 270, the third front gear 271, the third rear gear 272, the fourth gear 280, the inner wall hole 281, the speed change gear 290, and the second concave portion 291;

a fixed gear set 300, a first gear 310, a second gear 320, a second shaft 330;

a first fork 410, a first handle 411, a second fork 420, a second handle 421.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The embodiments of the present invention will be further explained with reference to the drawings.

According to some embodiments of the present invention, referring to fig. 1 to 4, the transfer device includes a driving motor 100 and a movable gear set 200, the movable gear set 200 includes a first shaft 210, a front driving gear 220, a rear driving gear 230, a transfer gear 240, a shift gear 250 and a connecting pin 260, the driving motor 100 can drive the first shaft 210 to rotate; referring to fig. 5 to 7 and 9 to 11, a front drive gear 220, a rear drive gear 230 and a transfer gear 240 are all sleeved on a first shaft 210, the transfer gear 240 is located between the front drive gear 220 and the rear drive gear 230, the front drive gear 220 is located in front of the rear drive gear 230, the rotation of the front drive gear 220 can drive the front wheels of the model car to rotate, and the rotation of the rear drive gear 230 can drive the rear wheels of the model car to rotate; the shifting gear 250 is sleeved on the transfer gear 240; referring to fig. 4, the inner wall of shift gear 250 has a plurality of first recesses 251, and the exterior of transfer gear 240 is provided with a plurality of first protrusions 242 in one-to-one correspondence with the first recesses 251 of the inner wall of shift gear 250, so that shift gear 250 and transfer gear 240 are engaged and shift gear 250 can slide in the axial direction of first shaft 210 with respect to transfer gear 240; the outer peripheral wall of the shift gear 250 has teeth; referring to fig. 5, the tooth portion of the shift gear 250 is located on the side away from the front drive gear 220; referring to fig. 9, the tooth portion of the shift gear 250 is located on a side close to the front drive gear 220, so when the shift gear 250 is sleeved on the transfer gear 240, it can be understood that the direction in which the shift gear 250 is sleeved on the transfer gear 240 can be changed as required, so that the tooth portion of the shift gear 250 is located on a side close to the front drive gear 220 or on a side far from the front drive gear 220; referring to fig. 4, a plurality of second convex portions 222 corresponding to the first concave portions 251 of the inner wall of the shift gear 250 in a one-to-one manner are provided on the outer circumferential wall of the rear end of the front drive gear 220, the shift gear 250 can slide forward in a state of being engaged with the transfer gear 240 to be engaged with the front drive gear 220, a plurality of third convex portions 231 corresponding to the first concave portions 251 of the inner wall of the shift gear 250 in a one-to-one manner are provided on the outer circumferential wall of the front end of the rear drive gear 230, and the shift gear 250 can slide backward in a state of being engaged with the transfer gear 240 to be engaged with the rear drive gear 230, it can be understood that the shift gear 250 can be simultaneously engaged with the transfer gear 240 and the front drive gear 220, the shift gear 250 can also be simultaneously engaged with the transfer gear 240 and the rear drive gear 230, and the transfer gear 250 can also be simultaneously engaged with the transfer gear 240, the front drive gear 220 and the rear drive gear 230; referring to fig. 4, 5 and 9, the first shaft 210 is provided with a first through hole 211 and a second through hole 212, the front drive gear 220 is provided with a groove 221, the transfer gear 240 is provided with a connecting hole 241, when the connecting pin 260 is simultaneously positioned in the first through hole 211 and the groove 221, the connecting pin 260 relatively fixes the front drive gear 220 and the first shaft 210 together, and the rotation of the first shaft 210 drives the front drive gear 220 to rotate; when the connecting pin 260 is simultaneously located in the second through hole 212 and the connecting hole 241, the connecting pin 260 fixes the transfer gear 240 and the first shaft 210 together, and the rotation of the first shaft 210 drives the transfer gear 240 to rotate.

It should be noted that the movable gear set 200 has two assembling states, namely a first assembling state and a second assembling state, wherein:

referring to fig. 5 to 7, when the connecting pin 260 fixes the front drive gear 220 and the first shaft 210 together with the toothed portion of the shift gear 250 positioned at a side away from the front drive gear 220, the movable gear set 200 is in the first assembled state, and the movable gear set 200 has three modes of the front drive mode, the four drive mode, and the brake mode in the first assembled state.

Referring to fig. 5, when shift gear 250 is simultaneously engaged with transfer gear 240 and forward drive gear 220, and movable gear set 200 enters the forward drive mode, rotation of first shaft 210 can drive forward drive gear 220 to rotate, and rotation of forward drive gear 220 can drive the front wheels of the model car to rotate.

Referring to fig. 6, when the shift gear 250 is engaged with the transfer gear 240, the front drive gear 220 and the rear drive gear 230 at the same time, the movable gear set 200 enters a four-drive mode, the rotation of the first shaft 210 can drive the front drive gear 220, the shift gear 250, the transfer gear 240 and the rear drive gear 230 to rotate, the rotation of the front drive gear 220 can drive the front wheels of the model car to rotate, and the rotation of the rear drive gear 230 can drive the rear wheels of the model car to rotate.

Referring to fig. 7 and 8, when the shift gear 250 is engaged with the transfer gear 240 and the rear drive gear 230 at the same time and the teeth of the rear end of the shift gear 250 are engaged with the case inner teeth 130 on the inner wall of the case 110, the movable gear set 200 enters the braking mode, it can be understood that the rear wheel of the model car will rotate following the rotation of the front wheel of the model car, so the rear drive gear 230 will also rotate, and since the shift gear 250 is engaged with the case 110 and the rear drive at the same time, the case 110 will block the rotation of the rear drive gear 230, thereby blocking the rotation of the rear wheel of the model car, thereby implementing the braking function.

Referring to fig. 9-11, when connecting pin 260 secures transfer gear 240 and first shaft 210 together with the toothing of shift gear 250 on the side closer to the front-drive exit wheel, active gear set 200 is in a second assembled state in which active gear set 200 has three modes, a forward drive mode, a four drive mode, and a rear drive mode.

Referring to fig. 9, when shift gear 250 is simultaneously engaged with transfer gear 240 and forward drive gear 220, and active gear set 200 enters the forward drive mode, rotation of first shaft 210 rotates transfer gear 240 and thus shift gear 250 and forward drive gear 220, and rotation of forward drive gear 220 rotates the front wheels of the model vehicle.

Referring to fig. 10, when the shift gear 250 is engaged with the transfer gear 240, the front drive gear 220 and the rear drive gear 230 simultaneously, the movable gear set 200 enters the four-drive mode, and the rotation of the first shaft 210 can drive the transfer gear 240 to rotate, which in turn drives the shift gear 250, the front drive gear 220 and the rear drive gear 230 to rotate, the rotation of the front drive gear 220 can drive the front wheels of the model car to rotate, and the rotation of the rear drive gear 230 can drive the rear wheels of the model car to rotate.

Referring to fig. 11, when shift gear 250 is simultaneously engaged with transfer gear 240 and rear drive gear 230, and active gear set 200 enters a rear drive mode, rotation of first shaft 210 can drive transfer gear 240 to rotate and drive shift gear 250 and rear drive gear 230 to rotate, and rotation of rear drive gear 230 can drive the rear wheels of the model car to rotate.

According to some embodiments of the present invention, referring to fig. 1 to 4, the transfer device further includes a fixed gear set 300, the fixed gear set 300 includes a first gear 310, a second gear 320 and a second shaft 330, the first gear 310 and the second gear 320 are both sleeved and fixed on the second shaft 330, the first gear 310 is located in front of the second gear 320; the movable gear set 200 further includes a third gear 270 and a fourth gear 280, the third gear 270 and the fourth gear 280 are sleeved on the first shaft 210, the first gear 310 is meshed with the third gear 270, the second gear 320 is meshed with the fourth gear 280, a gear is sleeved on the driving end of the driving motor 100, the driving motor 100 is connected with the second shaft 330 through gear transmission, the rotation of the driving motor 100 can drive the second shaft 330 to rotate, the second shaft 330 is connected with the first shaft 210 through the gear, and the rotation of the second shaft 330 can drive the first shaft 210 to rotate.

According to some embodiments of the present invention, referring to fig. 2 to 4, the movable gear set 200 further includes a transmission gear 290, the third gear 270 includes a third front gear 271 and a third rear gear 272, the third rear gear 272 is sleeved on the first shaft 210, both the third rear gear 272 and the fourth gear 280 can rotate relative to the first shaft 210, the third front gear 271 is sleeved on and meshed with the third rear gear 272, the fourth gear 280 is located behind the third rear gear 272, the fourth gear 280 is provided with a plurality of inner wall holes 281, the plurality of inner wall holes 281 are uniformly distributed around the axis circumference of the fourth gear 280, the tooth portion of the rear end of the transmission gear 290 can be inserted into the inner wall hole 281 and then connected with the fourth gear 280, the inner wall of the transmission gear 290 is provided with a plurality of second concave portions 291, the outer circumferential wall of the first shaft 210 is provided with a plurality of fourth convex portions 213 corresponding to the second concave portions 291 of the inner wall of the transmission gear 290, the transmission gear 290 is sleeved on and meshed with the first shaft 210, and the transmission gear 290 can move along the axis direction of the first shaft 210.

It can be understood that when the change gear 290 slides forward to engage the tooth portion at the front end of the change gear 290 with the tooth portion at the rear end of the third rear gear 272, at this time, the change gear 290 engages with the third rear gear 272 and the first shaft 210 at the same time, the rotation of the second shaft 330 can drive the first gear 310 to rotate, the first gear 310 drives the third front gear 271 to rotate, the third front gear 271 drives the third rear gear 272 to rotate, and the third rear gear 272 rotates to drive the change gear 290 and the first shaft 210 to rotate; when the transmission gear 290 slides backwards and the tooth part at the rear end of the transmission gear 290 is inserted into the inner wall hole 281 of the fourth tooth part, at this time, the transmission gear 290 is engaged with the first shaft 210 and the fourth gear 280 at the same time, the rotation of the second shaft 330 can drive the second gear 320 to rotate, the second gear 320 drives the fourth gear 280 to rotate, and the fourth gear 280 drives the transmission gear 290 and the first shaft 210 to rotate.

According to some embodiments of the present invention, referring to fig. 2 and 3, the number of teeth of first gear 310 is N1, the number of teeth of second gear 320 is N2, the number of teeth of third gear 270 is N3, the number of teeth of fourth gear 280 is N4, and satisfy:

namely: the value obtained by dividing N3 by N1 is smaller than the value obtained by dividing N4 by N2.

It will be appreciated that the rotational speed of the first shaft 210 when the change gear 290 is engaged with the third gear 270 is less than the rotational speed of the first shaft 210 when the change gear 290 is engaged with the fourth gear 280; the speed change gear 290 may be moved as needed such that the speed change gear 290 engages with the third gear 270 or the fourth gear 280, thereby adjusting the rotational speed of the first shaft 210.

According to some embodiments of the utility model, referring to fig. 2, the transfer device still includes first shift fork 410, first shift fork 410 centre gripping is in gear shift 250, first shift fork 410 is equipped with the first in command 411, be equipped with third axle 120 in the shell 110, first shift fork 410 cover is established on third axle 120, third axle 120 is parallel with primary shaft 210, first shift fork 410 can slide along the axis direction of third axle 120 and then drive gear shift 250 and remove along the axis direction of primary shaft 210, the first in command 411 part is located outside the shell 110, when shell 110 sheltered from active gear group 200, thereby can drive gear shift 250 and remove along the axis direction push-and-pull first in command 411 of third axle 120.

According to some embodiments of the utility model, refer to fig. 2, transfer device still includes second shift fork 420, second shift fork 420 centre gripping is in change gear 290, second shift fork 420 is equipped with the second ba sa back, be equipped with third axle 120 in the shell 110, second shift fork 420 cover is established on third axle 120, third axle 120 is parallel with primary shaft 210, second shift fork 420 can slide and then drive change gear 290 along the axis direction of primary shaft 210 along the axis direction removal of third axle 120, second handle 421 parts are located outside shell 110, when shell 110 shelters from active gear group 200, thereby can drive change gear 290 removal along the axis direction push-and-pull second handle 421 of third axle 120.

In the description herein, references to the description of "some embodiments" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. Transfer device, be applied to model car, its characterized in that includes:

a drive motor (100);

the movable gear set (200), the movable gear set (200) comprises a first shaft (210), a front driving gear (220), a rear driving gear (230), a transfer gear (240), a gear shifting gear (250) and a connecting pin (260), the driving motor (100) is used for driving the first shaft (210) to rotate, the front driving gear (220), the rear driving gear (230) and the transfer gear (240) are all sleeved on the first shaft (210), the transfer gear (240) is located between the front driving gear (220) and the rear driving gear (230), the front driving gear (220) is used for driving front wheels of the model vehicle, and the rear driving gear (230) is used for driving rear wheels of the model vehicle;

the shifting gear (250) is sleeved on the transfer gear (240); the tooth of the shift gear (250) is positioned on the side far away from the front drive gear (220), or the tooth of the shift gear (250) is positioned on the side close to the front drive gear (220); when the tooth part of the shifting gear (250) is positioned at the side far away from the front drive gear (220), the shifting gear (250) can be meshed with the shell (110) of the movable gear set (200);

the shift gear (250) is movable in the axial direction of the first shaft (210), the shift gear (250) is capable of meshing with the transfer gear (240) and the front drive gear (220) simultaneously, the shift gear (250) is capable of meshing with the transfer gear (240) and the rear drive gear (230) simultaneously, and the shift gear (250) is capable of meshing with the front drive gear (220), the transfer gear (240) and the rear drive gear (230) simultaneously;

the connecting pin (260) is used to fix the front drive gear (220) and the first shaft (210), or the connecting pin (260) is used to fix the transfer gear (240) and the first shaft (210).

2. The transfer device according to claim 1, characterized in that, when the connecting pin (260) fixedly connects the front drive gear (220) and the first shaft (210) and the toothing of the shift gear (250) is located on a side remote from the front drive gear (220), the movable gear set (200) is in a first assembled state in which the movable gear set (200) can be switched back and forth between a front drive mode, a four drive mode and a brake mode, wherein:

when the shifting gear (250) is meshed with the transfer gear (240) and the front drive gear (220) at the same time, the movable gear set (200) enters the front drive mode, and the rotation of the first shaft (210) can drive the front drive gear (220) to rotate;

when the shift gear (250) is simultaneously engaged with the transfer gear (240), the front drive gear (220) and the rear drive gear (230), the active gear set (200) enters the four-drive mode, and the rotation of the first shaft (210) can drive the front drive gear (220), the shift gear (250), the transfer gear (240) and the rear drive gear (230) to rotate;

when the shift gear (250) is simultaneously engaged with the transfer gear (240) and the rear drive gear (230) and the shift gear (250) is engaged with the housing (110) of the active gear set (200), the active gear set (200) enters the braking mode and the housing (110) can block the rear drive gear (230) from rotating.

3. The transfer device of claim 1, wherein when the connecting pin (260) fixedly connects the transfer gear (240) and the first shaft (210) with the toothed portion of the shift gear (250) located on a side adjacent to the front drive gear (220), the active gear set (200) is in a second assembled state in which the active gear set (200) is switchable back and forth between a front drive mode, a four drive mode, and a rear drive mode, wherein:

when the shift gear (250) is engaged with the transfer gear (240) and the front drive gear (220) simultaneously, the movable gear set (200) enters the front drive mode, and the rotation of the first shaft (210) can drive the transfer gear (240) to rotate so as to drive the shift gear (250) and the front drive gear (220) to rotate;

when the shift gear (250) is simultaneously engaged with the transfer gear (240), the front drive gear (220) and the rear drive gear (230), the active gear set (200) enters the four-drive mode, and the rotation of the first shaft (210) can drive the transfer gear (240) to rotate so as to drive the shift gear (250), the front drive gear (220) and the rear drive gear (230) to rotate;

when the shift gear (250) is engaged with the transfer gear (240) and the rear drive gear (230) simultaneously, the active gear set (200) enters the rear drive mode, and the rotation of the first shaft (210) can drive the transfer gear (240) to rotate so as to drive the shift gear (250) and the rear drive gear (230) to rotate.

4. The transfer device according to claim 1, characterised in that the first shaft (210) is provided with a first through hole (211) and a second through hole (212), the front drive gear (220) is provided with a recess (221), and the transfer gear (240) is provided with a connecting hole (241); when the connecting pin (260) is simultaneously positioned in the first through hole (211) and the groove (221), the front drive gear (220) is fixedly connected with the first shaft (210); when the connecting pin (260) is simultaneously positioned in the second through hole (212) and the connecting hole (241), the transfer gear (240) is fixedly connected with the first shaft (210).

5. The transfer device of claim 1, further including a fixed gear set (300), the fixed gear set (300) including a first gear (310), a second gear (320) and a second shaft (330), the first gear (310) and the second gear (320) each being sleeved and fixed to the second shaft (330); the movable gear set (200) further comprises a third gear (270) and a fourth gear (280), the third gear (270) and the fourth gear (280) are sleeved on the first shaft (210), the first gear (310) is meshed with the third gear (270), the second gear (320) is meshed with the fourth gear (280), and the driving motor (100) can drive the second shaft (330) to rotate so as to drive the first shaft (210) to rotate.

6. The transfer device according to claim 5, characterized in that said active gear set (200) further comprises a speed change gear (290), said speed change gear (290) being sleeved and meshed with said first shaft (210), said third gear (270) and said fourth gear (280) being rotatable with respect to said first shaft (210), said speed change gear (290) being located between said third gear (270) and said fourth gear (280); the transmission gear (290) is movable in an axial direction of the first shaft (210) to mesh the transmission gear (290) with the third gear (270) or the fourth gear (280); when the speed change gear (290) is engaged with the third gear (270), the third gear (270) is fixed relative to the first shaft (210); the fourth gear (280) is relatively fixed with respect to the first shaft (210) when the speed change gear (290) is engaged with the fourth gear (280).

7. The transfer gear of claim 6, wherein the number of teeth of the first gear (310) is N1, the number of teeth of the second gear (320) is N2, the number of teeth of the third gear (270) is N3, and the number of teeth of the fourth gear (280) is N4, such that:

8. the transfer device according to claim 1, characterized in that the transfer device further comprises a first shifting fork (410), the first shifting fork (410) is clamped to the shifting gear (250), and the first shifting fork (410) can move along the axial direction of the first shaft (210) to drive the shifting gear (250) to move.

9. The transfer device according to claim 6, characterized in that it further comprises a second fork (420), said second fork (420) being clamped to said transmission gear (290), said second fork (420) being movable in the direction of the axis of said first shaft (210) to move said transmission gear (290).

10. Model vehicle, characterized in that it comprises a transfer device according to any one of claims 1 to 9.

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