CN209934083U

CN209934083U - Driving device with double-planetary differential mechanism

Info

Publication number: CN209934083U
Application number: CN201920521411.3U
Authority: CN
Inventors: 方清松
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-01-14
Anticipated expiration: 2029-04-17

Abstract

A driving device with a double-planet type differential mechanism comprises a main power wheel, a left external gear hub, a right external gear hub, an internal gear ring, a planet gear base, a planet gear set and a sun gear, wherein the left external gear hub and the right external gear hub are symmetrically arranged on two sides of the main power wheel; a power source of the translation mechanism outputs power to a main power wheel through power transmission, so that the main power wheel drives a sun gear to transmit power to a planetary gear set, the planetary gear set slides relative to the circumference of an inner gear ring and drives a planetary gear base to coaxially rotate relative to an outer gear hub, and the planetary gear base outputs power to an output shaft; the power source of the steering mechanism outputs power to the outer gear rings of the two outer gear hubs through power transmission, so that the two outer gear hubs of the co-rotating shaft rotate in opposite directions. The device can make two ends of the output shaft of the driving device obtain great differential speed or heterodromous rotation, so that the vehicle body obtains highly sensitive operation feeling.

Description

Driving device with double-planetary differential mechanism

Technical Field

The utility model relates to a toy field, concretely relates to utensil double planetary differential mechanism's drive arrangement.

Background

The present toy car products on the market mainly include racing cars, turning cars, deforming cars and projectile cars from the aspect of playing functions, but the toys have one function of moving without leaving, and in the moving process, a player obtains a sensitive operation feeling, for example, a toy car which can realize multi-action control such as high-speed driving, multi-direction control, drifting and even in-situ drifting can certainly be well loved by consumers. Most of the current toy vehicles on the market can only realize simple forward and backward movement and large-corner turning on the moving function, and the playing method is monotonous, so that the playing method is easy to be tired, and consumers lose the playing pleasure.

Disclosure of Invention

The utility model aims at providing an utensil double row star formula differential mechanism's drive arrangement, its steering mechanism, translation mechanism are through the drive to planet differential mechanism, enable drive arrangement's output shaft both ends and obtain differential by a wide margin and even incorgruous rotation to the wheel that the messenger installed on the output shaft can drive the automobile body, obtains highly sensitive operation sense.

In order to achieve the above purpose, the utility model adopts the following technical means to implement:

a driving device with a double-planet type differential mechanism comprises a shell, a steering mechanism, a translation mechanism and a planet differential mechanism, wherein the planet differential mechanism comprises a main power wheel, a left external gear hub, a right external gear hub, an internal gear ring, a planet gear base, a planet gear set and a sun gear, the left external gear hub and the right external gear hub are symmetrically arranged on two sides of the main power wheel, the internal gear ring is arranged in the external gear hubs and is coaxial with the external gear ring, the planet gear base is meshed with the internal gear ring and is connected with the planet gear base through a shaft; a power source of the translation mechanism outputs power to a main power wheel through power transmission, so that the main power wheel drives a sun gear to transmit power to a planetary gear set, the planetary gear set slides relative to the circumference of an inner gear ring and drives a planetary gear base to coaxially rotate relative to an outer gear hub, and the planetary gear base outputs power to an output shaft; the power source of the steering mechanism outputs power to the outer gear rings of the two outer gear hubs through power transmission, so that the two outer gear hubs of the co-rotating shaft rotate in opposite directions.

Furthermore, the sun gear is in a gear column shape, the main power wheel is used as a connecting piece, and the left and right column parts of the sun gear are connected to the two sides of the main power wheel in a paired shaft hub mode.

Furthermore, the external gear hub comprises a gear hub main body and a cover body, the tooth part and the internal gear ring of the planetary gear base, the planetary gear set and the sun gear are arranged in a cavity enclosed by the gear hub main body and the cover body, and the column part of the sun gear extends outwards from the shaft hole of the cover body.

Still further, the planetary gear set has 3-5 planetary gears arranged circumferentially around the sun gear.

Furthermore, the planetary gear base transmits power to the output shaft through the transmission gear set.

Furthermore, the transmission gear set consists of a driving gear coaxially fixed with the planetary gear base and a driven gear coaxially fixed with the output shaft.

As an effective arrangement scheme, the shell comprises a bearing shell, a lower shell and an upper shell, the planetary differential mechanism and the translation mechanism are arranged in a space enclosed by the bearing shell and the lower shell, and the steering mechanism is arranged in a space enclosed by the upper shell and the lower shell.

As an effective arrangement scheme, the translation mechanism comprises a translation motor and a translation gear set, the translation gear set comprises a translation motor output gear, a second-order transmission gear and a transmission gear column, the translation motor output gear enlarges the transmission ratio through the second-order transmission gear, and then the transmission ratio is reduced to the transmission gear column through the second-order transmission gear, and the transmission ratio is enlarged to the main power wheel through the transmission gear column.

As an effective arrangement scheme, the steering mechanism comprises a steering motor and a steering gear set, the steering gear set comprises a steering motor output gear, a first-stage second-stage gear, a left second-stage gear and a right second-stage gear, the steering motor output gear expands the transmission ratio through the first-stage second-stage gear, and then the transmission ratio is expanded through the left second-stage gear and the right second-stage gear, so that the left second-stage gear and the right second-stage gear output power corresponding to outer gear rings of left outer gear hubs and right outer gear hubs in a transmission ratio expanding mode, and the two outer gear hubs of the co-rotating shaft rotate.

The utility model discloses have following useful part:

1. the driving device is a combined component, can be matched with different types of toy vehicles, and enables the toy vehicle provided with the driving device to drive the forward and reverse rotation, high and low speed rotation and output power to the planetary differential mechanism by matching with the control of an external controller, so that the toy vehicle body realizes various actions such as high-speed driving, multi-directional control, drifting and even in-situ drifting, and the like, and the existing monotonous operating toy vehicle obtains sensitive operation feeling;

2. through the partition design of the translation mechanism, the planetary mechanism and the steering mechanism, the maintenance of the driving device can be facilitated, and a player can more clearly maintain the toy car body with the direct or steering operation obstacle.

Drawings

FIG. 1 is a schematic view of the internal transmission mechanism of the present invention;

fig. 2 is a schematic structural diagram of the planetary differential mechanism of the present invention.

Fig. 3 is a schematic view of the installation process of the housing of the present invention.

Detailed Description

The following detailed description of the present application, taken in conjunction with the accompanying drawings and examples, will be understood that the specific embodiments described herein are illustrative of the invention only and are not limiting. In addition, for convenience of description, only the portions related to the invention appear in the drawings.

It should be noted that the features of the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Examples

As shown in fig. 1-3, a driving device with a double planetary differential mechanism includes a housing, a steering mechanism, a translational mechanism, and a planetary differential mechanism, wherein the planetary differential mechanism includes a main power wheel 11, two sets of left and right coaxially disposed outer gear hubs 13 symmetrically disposed at both sides of the main power wheel 11, an inner gear ring 1312 disposed in the outer gear hubs 13 and coaxial with the outer gear ring 1311, a planetary gear base 16, a planetary gear set 17 engaged with the inner gear ring 1312 and connected with a shaft of the planetary gear base 16, and a sun gear 18 in a gear column shape;

specifically, in the present embodiment, the planetary differential mechanism has the following structure: the left and right sun gears 18 and the column 181 of the main power wheel 11 are hexagonal shafts, the main power wheel 11 is used as a connecting piece, and the left and right paired shaft hubs are connected to both sides of the main power wheel 11; as shown in fig. 3, taking the left external gear hub 13 as an example, the external gear hub 13 includes a gear hub main body 131 and a cover 132, three planetary gears 17 are circumferentially arranged on a rotating shaft 161 of the planetary gear base 16, so that a tooth portion 182 of the sun gear 18 is mounted on a central portion of the three planetary gears, and the tooth portion 182 of the sun gear 18 is meshed with each planetary gear; the planetary gear base 16 is mounted in the outer hub 13 so that the outer peripheries of all three planetary gears mesh with the inner ring gear 1312. At this time, the planetary gear base 16, the planetary gear set 17, the tooth portion 182 of the sun gear 18, and the inner ring gear 1312 are disposed in a cavity surrounded by the hub main body 131 and the cover 132, and the column portion 181 of the sun gear 18 extends outward from the shaft hole 1321 of the cover 132 and is held fixed to the main power wheel 11; the base 162 of the planetary gear base 16 is inserted into the shaft hole 1313 of the outer hub gear 13, and at this time, the planetary differential mechanism is in the state shown in fig. 1 as a whole;

the translational mechanism comprises a translational motor 21 and a translational gear set, wherein the translational gear set comprises a translational motor output gear 22, a second-order transmission gear 23 and a transmission gear column 24, and specifically, the translational motor output gear 22 is a gear with a smaller diameter and is meshed with a larger gear layer 231 outside the second-order transmission gear 23, so that the transmission ratio is enlarged, and the translational motor 21 can drive the second-order transmission gear 23 to rotate more easily; the diameter of the smaller gear layer 232 inside the second-order transmission gear 23 is larger than that of the larger gear side 241 of the transmission gear column 24, so that after the smaller gear layer of the second-order transmission gear 23 is meshed with the larger gear side of the transmission gear column 24, and the smaller gear side 242 of the transmission gear column 24 is used, a transmission ratio reducing effect is formed, the transmission gear column 24 can obtain a higher rotating speed in unit time, and similarly, power is output to the main power wheel 11 in a manner of expanding the transmission ratio through the smaller gear side 242 of the transmission gear column 24, the driving torque of the transmission gear column 24 on the main power wheel 11 can be better improved, and the main power wheel 11 can be driven more smoothly.

The steering mechanism comprises a steering motor 31 and a steering gear set, wherein the steering gear set comprises a steering motor output gear 32, a first-stage second-stage gear 34, a left second-stage gear (35,35'), the diameter of the steering motor output gear 32 is smaller, and the transmission ratio is enlarged through a gear layer 341 with larger diameter of the first-stage second-stage gear 34, so that the steering motor 31 can drive the first-stage second-stage gear 34 to rotate more smoothly; the gear layers (351,351 ') with larger diameters of the left and right second-stage step gears (35,35') are correspondingly meshed with the left and right sides of the gear layer 342 with smaller diameter of the first-stage step gear 34, so that the first-stage step gear 34 expands the transmission ratio of the left and right second-stage step gears (35,35'), then the gear layers (352,352 ') with smaller diameters of the left and right second-stage step gears (35,35') correspondingly output power to the outer gear rings 1311 of the left and right outer gear hubs 13 in a manner of expanding the transmission ratio, and the steering motor 31 can output power to the steering mechanism with larger torsion force through the arrangement of expanding the transmission ratio for three times, so that the two coaxial outer gear hubs 13 rotate reversely.

In addition, in the embodiment, the steering gear set further includes an intermediate gear 33, the diameter of which is larger than that of the steering motor output gear 32 and is close to that of the larger gear layer of the first-stage second-stage gear 34, by this arrangement, the intermediate gear 33 plays a role of transmitting the rotating speed, and has an advantage of facilitating the layout of the steering motor 31 in the housing so as to maintain the relative balance of the left and right weights with the translation motor 21 in the housing.

The translation mechanism outputs power to the main power wheel 11 through power transmission, and the steering mechanism is in a stop working state at the moment, so that the outer gear hub 13 is in a static state in the state; when the main power wheel 11 drives the sun gear 18 to transmit power to the planetary gear set 17, the planetary gear set 17 is made to slide circumferentially relative to the inner gear ring 1312 by centering on the sun gear 18, at this time, the planetary gear set 17 correspondingly drives the planetary gear base 16 to rotate coaxially relative to the outer gear hub 13, and the planetary gear bases 16 on the left and right sides are driven by the translation mechanism at the same speed and in the same direction, so that the planetary gear bases 16 can output power to the output shaft;

when the steering action needs to be started, taking leftward rotation as an example, the starting state of the translation mechanism is maintained, and the steering mechanism is controlled to output power to the outer toothed rings 1311 of the left and right outer gear hubs 13, at this time, because the left and right second-stage gears (35,35') of the steering mechanism rotate in the same direction and at the same rotating speed, as shown in fig. 1-2, when the left and right second-stage gears (35,35') both rotate in the clockwise direction, the steering direction of the left outer gear hub 13 rotates backwards, and the steering direction of the right outer gear hub 13 rotates forwards; because the planetary gear set 17 on the left and right planetary gear bases slides forward along the inner gear ring 1312 under the normal translation state, and the left outer gear hub 13 rotates backward and superposes a rotating speed in the opposite direction, the rotating speed of the left planetary gear base 16 is reduced, so that the left planetary gear base 16 is relatively in a stationary state, and the planetary gear sets 17 slide relative to the inner gear ring 1312 by taking the corresponding rotating shafts 161 as axes; conversely, the right outer hub gear 13 turns forward, superimposing a rotation in the same direction as the inner ring gear 1312 on the whole, which in total causes the right planet carrier base to rotate faster, thus amplifying the right torque. Through the arrangement mode, the left output shaft and the right output shaft of the driving device obtain the effect of large-amplitude rotation differential, so that a vehicle body provided with the driving device can rotate in a small range, even the left output shaft is used as a rotation point to rotate in place, and the action of turning is more accurate and sensitive;

further, the planetary gear base 16 is fixed to the planetary gear base 16 through the driving gear 14 coaxially fixed with the planetary gear base 16, and a driven gear 15 coaxially fixed with the output shaft, a column part 141 of the driving gear 14 is formed in a hexagonal shaft shape, is inserted into a base part 162 of the planetary gear base 16 and is coaxially fixed with each other, a tooth part 142 of the driving gear is engaged with a tooth part 151 of the driven gear 15, and the rotary column portion 152 of the driven gear 15 is extended outwardly through the rotary hole of the housing, forming an output shaft, the output shaft can obtain the same force as the direct output by arranging the transmission gear set, and, according to different requirements, the driving gear 14 can be arranged in a mode of expanding/reducing the transmission ratio relative to the driven gear 15, and the modified structure is simple and can play a role in improving the torque force of an output shaft or increasing the rotating speed.

As an effective arrangement scheme, as shown in fig. 2, the housing includes a bearing shell 41, a lower shell 42 and an upper shell 43, the planetary differential mechanism and the translation mechanism are arranged in a space enclosed by the bearing shell 41 and the lower shell 42, the steering mechanism is arranged in a space enclosed by the upper shell 43 and the lower shell 42, and when the whole vehicle body has a problem in translation, the internal translation mechanism can be maintained by unlocking between the lower shell 42 and the bearing shell 41; similarly, when the whole body is out of order in the turning process, the steering mechanism inside can be maintained through unlocking between the upper shell 43 and the bearing shell 41, and the steering mechanism can have better pertinence in the maintenance process.

Finally, it should be noted that the above embodiments are only used for illustrating and not limiting the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can be modified or replaced with equivalents, and any modification or partial replacement without departing from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. A driving device with a double-planet type differential mechanism comprises a shell, a steering mechanism, a translation mechanism and a planet differential mechanism, and is characterized by also comprising a main power wheel, a left external gear hub, a right external gear hub, an internal gear ring, a planet gear base, a planet gear set and a sun gear, wherein the left external gear hub and the right external gear hub are symmetrically arranged on two sides of the main power wheel; a power source of the translation mechanism outputs power to a main power wheel through power transmission, so that the main power wheel drives a sun gear to transmit power to a planetary gear set, the planetary gear set slides relative to the circumference of an inner gear ring and drives a planetary gear base to coaxially rotate relative to an outer gear hub, and the planetary gear base outputs power to an output shaft; the power source of the steering mechanism outputs power to the outer gear rings of the two outer gear hubs through power transmission, so that the two outer gear hubs of the co-rotating shaft rotate in opposite directions.

2. The driving apparatus with a double planetary differential mechanism as claimed in claim 1, wherein the sun gear is in a gear column shape, the main power wheel is used as a connecting member, and the right and left paired hub portions of the sun gear are connected to both sides of the main power wheel.

3. A drive unit having a double planetary differential mechanism according to claim 2, wherein said outer hub includes a hub body and a cover, said planetary gear base, the planetary gear set, the tooth portion of the sun gear, and the inner ring gear are disposed in a cavity defined by the hub body and the cover, and the post portion of the sun gear extends outward from the axial hole of the cover.

4. A drive unit having a double planetary differential mechanism as claimed in claim 3, wherein said planetary gear set has 3 to 5 planetary gears arranged circumferentially centering on the sun gear.

5. A drive unit having a double planetary differential mechanism as claimed in claim 1, wherein said planetary gear base transmits power to the output shaft through a transmission gear set.

6. A drive unit having a double planetary differential mechanism as claimed in claim 5, wherein said drive gear set is composed of a drive gear fixed coaxially with the planetary gear base and a driven gear fixed coaxially with the output shaft.

7. A drive unit having a double planetary differential mechanism as claimed in any one of claims 1 to 6, wherein said housing includes a carrier case, a lower case, and an upper case, said planetary differential mechanism and said translation mechanism are disposed in a space enclosed by said carrier case and said lower case, and said steering mechanism is disposed in a space enclosed by said upper case and said lower case.

8. The driving apparatus with the double planetary differential mechanism as claimed in any one of claims 1 to 6, wherein the translational mechanism includes a translational motor and a translational gear set, the translational gear set includes a translational motor output gear, a second-order transmission gear and a transmission gear column, the translational motor output gear expands the transmission ratio through the second-order transmission gear, and then the transmission ratio is reduced to the transmission gear column through the second-order transmission gear, and the transmission ratio is expanded to the main driving wheel through the transmission gear column.

9. A driving apparatus having a double planetary differential mechanism according to any one of claims 1 to 6, wherein the steering mechanism includes a steering motor and a steering gear set, the steering gear set includes a steering motor output gear, a first-stage second-stage gear, a left second-stage gear and a right second-stage gear, the steering motor output gear expands the transmission ratio through the first-stage second-stage gear, and then expands the transmission ratio through the left second-stage gear and the right second-stage gear, so that the left second-stage gear and the right second-stage gear output power corresponding to the outer ring gears of the left outer gear hub and the right outer gear hub in the manner of expanding the transmission ratio, and the two outer gear hubs of the common rotation.