Driving device of toy car

Abstract

The utility model provides a driving device of a toy car, which comprises a shell, a motor and a gear set, the motor and the gear set are in driving connection, the gear set comprises an input tooth, a first output tooth, a second output tooth, a first tooth set and a second tooth set, the input tooth is fixed with a rotating shaft of the motor, and the second output tooth is fixed with a rotating shaft of the motor. The first output teeth and the second output teeth are distributed at the two ends of the shell at intervals, the first tooth set comprises a plurality of duplicate gears which are sequentially meshed, a front-end gear of the first tooth set is meshed with the input teeth, a tail-end gear of the first tooth set is meshed with the first output teeth, and a rear-end gear of the second tooth set is meshed with the second output teeth. And the second tooth group comprises a plurality of single gears which are meshed in sequence, and the second tooth group is in transmission connection between the tail end gear of the first tooth group and the second output tooth. According to the driving device, the motor can be arranged at one end of the shell, so that the motor and other functional structures of the toy car can be staggered, position interference is not prone to being generated, flat arrangement of the thickness of the chassis is facilitated, and the structural compactness is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technical field at toy car, especially a driving device of toy car. BACKGROUND

[0002] Among various toys, the toy car with walking function is deeply loved by consumers, and in the driving device of some toy cars, a driving gear is usually arranged to engage with two gear chains respectively for driving the front and rear wheels to rotate simultaneously, such as the amphibious waterproof toy remote control car provided in the patent with the application number CN202121321745.X, the gear set of the transmission device includes an input wheel located at the middle position, two output wheels at the front and rear ends and a plurality of transition wheels located between the output wheels and the input wheel, the transmission ratio of the front and rear output wheels relative to the input wheel is the same, and the rotation speed and steering direction of the two are the same, the front and rear output wheels are concentrically provided with wheel shafts and form front and rear wheel shafts respectively. SUMMARY

[0003] The utility model discloses at least solve one of the technical problems in the prior art, and for this purpose, the utility model provides a driving device of toy car.

[0004] In order to achieve the foregoing purpose, the utility model provides a driving device of toy car, including casing, and driving connection motor and gear set, the gear set includes input tooth, first output tooth, second output tooth, first tooth group and second tooth group, the input tooth is fixed with the rotating shaft of motor, the first output tooth and the second output tooth interval distribution in both ends of the casing, the first tooth group includes a plurality of double coupling gear that engages in proper order, the front end gear of first tooth group is engaged with input tooth, the last gear of first tooth group is engaged with first output tooth, the second tooth group includes a plurality of single coupling gear that engages in proper order, the second tooth group transmission connection between the last gear of first tooth group and second output tooth.

[0005] As a preferred scheme, the first tooth group includes first double coupling tooth and second double coupling tooth that engage in proper order, the first double coupling tooth is engaged with the input tooth and is rotatably connected with the first output tooth coaxially, and the second double coupling tooth is engaged with the first output tooth and the front end gear of the second tooth group respectively.

[0006] As a preferred solution, the second tooth set comprises two first single gears and two second single gears, the first single gears have a smaller number of teeth than the second single gears, the two first single gears are connected in meshing between the two second single gears, and the two second single gears are connected in meshing with the second double gear and the second output gear respectively.

[0007] As a preferred solution, the first double gear comprises coaxially fixed first and second teeth, the second double gear comprises coaxially fixed third and fourth teeth, the first teeth have a larger number of teeth than the second teeth, and the third teeth have a larger number of teeth than the fourth teeth, wherein the first teeth are connected in meshing with the input gear, the second teeth are connected in meshing with the third teeth, and the fourth teeth are connected in meshing with the first output gear and the second single gear respectively.

[0008] As a preferred solution, the number of teeth of the first teeth to the input gear is 32:9, the number of teeth of the first teeth to the second teeth is 16:7, the number of teeth of the third teeth to the fourth teeth is 24:7, the number of teeth of the third teeth to the second teeth is 24:7, and the number of teeth of the fourth teeth to the first output gear is 7:24.

[0009] As a preferred solution, the first output gear, the second output gear and the second single gear have the same number of teeth.

[0010] As a preferred solution, the number of teeth of the first single gear is half of the number of teeth of the second single gear.

[0011] As a preferred solution, the transmission ratio between the input gear, the first tooth set and the first output gear is equal to the transmission ratio between the input gear, the first tooth set, the second tooth set and the second output gear, the first output gear and the second output gear have the same rotation direction, and a shaft rod is protruding from the same side of the housing and is rotatable outside the housing.

[0012] As a preferred solution, the housing comprises a first housing and a second housing connected detachably, one end of the first housing is provided with a first slot for accommodating and fixing the motor, and two ends of the second housing are respectively provided with a second slot for rotatably connecting the shaft rod.

[0013] Therefore, according to the technical means of the utility model, the utility model can obtain the effects briefly described as follows: the driving device of the toy car provided by the utility model fixes the input tooth on the rotating shaft of the motor, simultaneously sets the first tooth group as a plurality of double gear wheels which are sequentially engaged, sets the second tooth group as a plurality of single gear wheels which are sequentially engaged, makes the first tooth group engage and connect between the input tooth and the first output tooth, makes the second tooth group engage and connect between the first tooth group and the second output tooth, so that the input tooth, the first tooth group and the second tooth group can sequentially engage to form a long strip-shaped gear chain, so the motor can be arranged at one end of the shell, thereby being staggered with other functional structures of the toy car, position interference is not easy to generate, the thickness of the chassis can be flattened, and the compactness of the structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the preferred embodiment of the utility model.

[0015] Figure 2 It is Figure 1 It is an exploded structural schematic view of the driving device.

[0016] Figure 3 It is Figure 1 It is a structural schematic view of the gear group and the motor in one direction.

[0017] Figure 4 It is Figure 1 It is a structural schematic view of the gear group and the motor in another direction.

[0018] In the figure: 1: shell; 11: first shell; 111: first groove body; 12: second shell; 121: second groove body; 2: motor; 3: gear group; 31: input tooth; 32: first output tooth; 33: second output tooth; 34: first tooth group; 341: first double gear tooth; 3411: first tooth; 3412: second tooth; 342: second double gear tooth; 3421: third tooth; 3422: fourth tooth; 35: second tooth group; 351: first single gear tooth; 352: second single gear tooth; 30: axle rod; 40: sealing ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. It can be understood that the drawings are provided for reference and illustration only, and are not used to limit the utility model. The connections shown in the drawings are only for clear description, and do not limit the connection mode.

[0020] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like are used herein to describe the orientation or positional relationship of the present application based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating that the devices or elements referred to must have a special orientation or positional relationship, and therefore cannot be understood as limiting the present application. It should be noted that when one piece is considered to be "connected" to another piece, it can be directly connected to the other piece or a middle piece can be present at the same time. It should be understood that the terms "first", "second" and the like are only for the convenience of describing the technical solutions of the present application, and are not intended to indicate that the devices or elements referred to must have a special order, and therefore cannot be understood as limiting the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0021] As shown in Figures 1-4 The present embodiment provides a driving device of a toy car, comprising a shell 1, and a drivingly connected motor 2 and gear set 3, wherein the motor 2 is fixed in the shell 1, and the gear set 3 is rotatably connected in the shell 1.

[0022] The shell 1 comprises a first shell 11 and a second shell 12 which are detachably connected. It can be understood that the first shell 11 and the second shell 12 can be detachably connected by means of bolt connection, buckle connection, plug-in connection, etc. One end of the first shell 11 is provided with a first groove body 111 for accommodating and fixing the motor 2, and the two ends of the second shell 12 are respectively provided with a second groove body 121 for rotatably connecting two output teeth of the gear set 3.

[0023] The gear set 3 comprises an input tooth 31, a first output tooth 32, a second output tooth 33, a first tooth set 34 and a second tooth set 35, wherein the input tooth 31 is fixed with the rotating shaft of the motor 2, the first output tooth 32 and the second output tooth 33 are distributed at the two ends of the shell 1, the first tooth set 34 is drivingly connected between the input tooth 31 and the first output tooth 32, and the second tooth set 35 is drivingly connected between the first tooth set 34 and the second output tooth 33. The above arrangement enables the input tooth 31, the first tooth set 34 and the second tooth set 35 to be sequentially meshed to form a long strip-shaped gear chain, so that the motor 2 can be arranged in the first groove body 111 at one end of the shell 1, thereby being staggered with other functional structures of the toy car and not being prone to positional interference, which is conducive to the flatness arrangement of the toy car chassis thickness and improves the compactness of the structure.

[0024] In order to make the front and rear wheels of the toy car have the same rotation speed and steering, the transmission ratio between the input tooth 31, the first tooth set 34 and the first output tooth 32 is equal to the transmission ratio between the input tooth 31, the first tooth set 34, the second tooth set 35 and the second output tooth 33, and the steering of the first output tooth 32 and the second output tooth 33 is the same. It can be understood that the first output tooth 32 and the second output tooth 33 are respectively rotatably connected in the second groove body 121, and the first output tooth 32 and the second output tooth 33 are provided with an axle rod 30 protruding outwardly towards the second groove body 121, and in the embodiment, the axle rod 30 is rotatably connected outside the second groove body 121 through a sealing ring 40, and is used to fix the wheel. In other embodiments, if the driving device has no waterproof requirement, the axle rod 30 can be directly rotatably connected to the second groove body 121.

[0025] The first tooth set 34 includes a plurality of double gear wheels that are sequentially engaged, the front gear wheel of the first tooth set 34 is engaged with the input tooth 31, and the last gear wheel of the first tooth set 34 is engaged with the first output tooth 32. The second tooth set 35 includes a plurality of single gear wheels that are sequentially engaged, and the second tooth set 35 is drivingly connected between the last gear wheel of the first tooth set 34 and the second output tooth 33. The above arrangement can ensure that the gear chain length of the first tooth set 34 is shortened while the gear chain length of the second tooth set 35 is lengthened, so as to meet the position distribution requirement between the first output tooth 32 and the second output tooth 33.

[0026] In the embodiment, the first tooth set 34 includes a first double gear wheel 341 and a second double gear wheel 342 that are sequentially engaged, and at this time, the first double gear wheel 341 is the front gear wheel of the first tooth set 34, and the second double gear wheel 342 is the last gear wheel of the first tooth set 34. The first double gear wheel 341 is engaged with the input tooth 31 and is rotatably coaxially connected with the first output tooth 32, and the second double gear wheel 342 is engaged with the first output tooth 32 and the front gear wheel of the second tooth set 35, respectively. Specifically, the first double gear wheel 341 includes a first tooth 3411 and a second tooth 3412 that are coaxially fixed, and the second double gear wheel 342 includes a third tooth 3421 and a fourth tooth 3422 that are coaxially fixed, wherein the first tooth 3411 is engaged with the input tooth 31, the second tooth 3412 is engaged with the third tooth 3421, and the fourth tooth 3422 is engaged with the first output tooth 32 and the second single gear of the second tooth set 35, respectively. In other embodiments, the first tooth set 34 can be composed of three or more double gear wheels that are sequentially engaged.

[0027] In the embodiment, the second tooth set 35 includes two first single-gear wheels 351 and two second single-gear wheels 352, wherein the two first single-gear wheels 351 are meshed and connected between the two second single-gear wheels 352, at this time, the two second single-gear wheels 352 are respectively the front gear wheel and the terminal gear wheel of the second tooth set 35, and the two second single-gear wheels 352 are respectively meshed and connected with the fourth gear wheel 3522 and the second output gear 33. In other embodiments, the second tooth set 35 can be composed of three or more than five single-gear wheels which are sequentially meshed, and the single-gear wheels can be provided with only one kind of gear specification or more than three kinds of gear specifications.

[0028] It can be understood that the number of teeth of the first tooth 3411 is greater than the number of teeth of the second tooth 3412, and the number of teeth of the third tooth 3421 is greater than the number of teeth of the fourth tooth 3422. In the embodiment, the gear ratio of the first tooth 3411 to the input gear 31 is 32:9, the gear ratio of the first tooth 3411 to the second tooth 3412 is 16:7, the gear ratio of the third tooth 3421 to the fourth tooth 3422 is 24:7, the gear ratio of the third tooth 3421 to the second tooth 3412 is 24:7, and the gear ratio of the fourth tooth 3422 to the first output gear 32 is 7:24. The number of teeth of the first output gear 32, the second output gear 33 and the second single-gear wheel 352 is the same, the number of teeth of the first single-gear wheel 351 is less than the number of teeth of the second single-gear wheel 352, and the number of teeth of the first single-gear wheel 351 is half of the number of teeth of the second single-gear wheel 352. Through the above setting, the high-speed output power of the motor 2 can be speed-changed to meet the stable driving demand of the toy car, and the transmission ratio between the first output gear 32 and the input gear 31 can be equal to the transmission ratio between the second output gear 33 and the input gear 31. In other embodiments, according to the different rotating speeds of the motor 2, the gear ratio values of the above-mentioned gear pairs can be adjusted.

[0029] Specifically, in the embodiment, the number of teeth of the input gear 31 is set to 9, the number of teeth of the first tooth 3411 is set to 32, the number of teeth of the second tooth 3412 is set to 14, the number of teeth of the third tooth 3421 is set to 48, the number of teeth of the fourth tooth 3422 is set to 14, the number of teeth of the first output gear 32, the second output gear 33 and the second single-gear wheel 352 is set to 48, and the number of teeth of the first single-gear wheel 351 is set to 24. Correspondingly, in other embodiments, the number of teeth of each gear of the gear set 3 can also be adjusted to other values as needed.

[0030] The driving device provided in the embodiment can drive the first output gear 32 to rotate through the input gear 31, the first double-gear wheel 341 and the second double-gear wheel 342 when the motor 2 starts, and can drive the second output gear 33 to rotate at the same speed in the same direction through the input gear 31, the first double-gear wheel 341, the second double-gear wheel 342 and the second tooth set 35.

[0031] For the sake of clarity, certain features of the present utility model described in separate embodiments can be combined in a single embodiment. Also, various features of the present utility model described in a single embodiment can be used in separate embodiments or in any suitable sub-combination.

Claims

1. A drive arrangement for a toy vehicle comprising a housing, and a drive connected motor and gear set, the gear set comprising an input tooth, a first output tooth, a second output tooth, a first set of teeth and a second set of teeth, characterised in that, The input tooth is fixed with the rotating shaft of the motor, the first output tooth and the second output tooth are distributed at two ends of the shell, the first tooth group comprises a plurality of double gears which are sequentially engaged, the front gear of the first tooth group is engaged with the input tooth, the end gear of the first tooth group is engaged with the first output tooth, the second tooth group comprises a plurality of single gears which are sequentially engaged, and the second tooth group is drivingly connected between the end gear of the first tooth group and the second output tooth.

2. The drive arrangement for a toy vehicle of claim 1, wherein, The first tooth group comprises a first double gear and a second double gear which are sequentially engaged, the first double gear is engaged with the input tooth and is rotatably coaxially connected with the first output tooth, and the second double gear is engaged with the first output tooth and the front gear of the second tooth group respectively.

3. The drive arrangement for a toy vehicle of claim 2, wherein, The second tooth group comprises two first single gears and two second single gears, the number of teeth of the first single gear is less than that of the second single gear, the two first single gears are engaged and connected between the two second single gears, and the two second single gears are engaged and connected with the second double gear and the second output tooth respectively.

4. The drive arrangement for a toy vehicle of claim 3, wherein, The first double gear comprises a first tooth and a second tooth which are coaxially fixed, the second double gear comprises a third tooth and a fourth tooth which are coaxially fixed, the number of teeth of the first tooth is greater than that of the second tooth, and the number of teeth of the third tooth is greater than that of the fourth tooth, wherein the first tooth is engaged with the input tooth, the second tooth is engaged with the third tooth, and the fourth tooth is engaged with the first output tooth and the second single gear respectively.

5. The drive arrangement for a toy vehicle of claim 4, wherein, The number of teeth of the first tooth and the input tooth is in a ratio of 32:9, the number of teeth of the first tooth and the second tooth is in a ratio of 16:7, the number of teeth of the third tooth and the fourth tooth is in a ratio of 24:7, the number of teeth of the third tooth and the second tooth is in a ratio of 24:7, and the number of teeth of the fourth tooth and the first output tooth is in a ratio of 7:

24.

6. A drive arrangement for a toy vehicle as claimed in any one of claims 3 to 5, wherein, The number of teeth of the first output tooth, the second output tooth and the second single gear is the same.

7. The drive arrangement for a toy vehicle of claim 6, wherein, The number of teeth of the first single gear is half of that of the second single gear.

8. The drive arrangement for a toy vehicle of claim 6, wherein, The transmission ratio between the input tooth, the first tooth group and the first output tooth is equal to the transmission ratio between the input tooth, the first tooth group, the second tooth group and the second output tooth, the rotating directions of the first output tooth and the second output tooth are the same, and a vehicle axle rod is protrudingly arranged on the same side of the shell.

9. The drive arrangement for a toy vehicle of claim 8, wherein, The shell comprises a first shell and a second shell which are detachably connected, one end of the first shell is provided with a first groove body for accommodating and fixing the motor, and two ends of the second shell are respectively provided with second groove bodies for rotatably connecting the vehicle axle rod.

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