Driving wheel with built-in driving motor

Abstract

The utility model relates to the technical field of accessories of sweeping robots, and discloses a driving wheel with a built-in driving motor, which comprises a driving wheel tire, a brushless driving motor and a hub gear ring. The brushless driving motor is arranged in the tire and is stably connected with the tire and the hub gear ring through a bearing. A gear box, a motor rotor, a motor stator iron core and other components are designed in the motor, and efficient transmission is achieved. The hub gear ring is in close contact with the inner wall of the tire to ensure stable transmission. The driving wheel is compact in structure, and the space needed by a traditional driving wheel is obviously reduced; the brushless driving motor is combined with the gear box, so that the mechanical transmission effect is improved, and the driving wheel rotates more stably and powerfully; due to the integrated connection design, the manufacturing cost is reduced, the assembly process is simplified, function expansion is facilitated, meanwhile, disassembly and maintenance are easy, and the maintenance cost is reduced, so that the working efficiency and the cleaning effect of the sweeping robot are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sweeper robot accessory technical field, concretely is a drive wheel of built -in drive motor. BACKGROUND

[0002] The drive wheel is the core key component that must be used by the sweeper robot, provides the power such as advancing, retreating, steering, stopping for the sweeper robot in the working process.

[0003] The traditional drive wheel is usually composed of motor, reduction box, wheel hub and tire and multiple independent components, these components each occupies certain space, leads to the structural space required by the whole drive wheel to be larger. This not only limits the miniaturization design and layout of the sweeper robot, also increases the volume and weight of the whole machine. The motor and reduction box in the traditional drive wheel are often connected through complex transmission mechanism, not only increases the complexity of transmission, also easily leads to the energy loss in the transmission process, thereby reduces the working efficiency and cleaning effect of the sweeper robot. And because the traditional drive wheel needs the assembly and debugging of multiple independent components, its manufacturing cost is relatively higher. Meanwhile, the complex structure also increases the maintenance difficulty and time cost, brings the inconvenience to the user. For this, a drive wheel of built -in drive motor is provided. SUMMARY

[0004] (I) technical problem solved

[0005] In view of the deficiency of prior art, the utility model provides a drive wheel of built -in drive motor to solve the above -mentioned technical problem.

[0006] (II) technical scheme

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a drive wheel of built-in drive motor, including drive wheel tire, brushless drive motor and wheel hub gear ring, the brushless drive motor sets up in the inside of drive wheel tire, and is connected through first bearing between both, the wheel hub gear ring is set in the outside of brushless drive motor, and the axle of wheel hub gear ring is connected through second bearing between the rotor of brushless drive motor, the outer wall of wheel hub gear ring is contacted and is connected with the inner wall of drive wheel tire, the brushless drive motor includes gear box, the centre of gear box is movably inserted with motor rotor, the inner wall of gear box is lined with motor stator core, the middle part of gear box is equipped with motor fixed support, the inside of motor fixed support is equipped with motor PCBA, motor rotor is connected through third bearing between motor fixed support, and the end of motor rotor is stretched out on the surface of motor fixed support, and is coaxially connected with motor gear, the outside transmission of motor gear is connected with two-stage tooth, the outside of gear box is sealed with gear box cover, the utility model sets up the brushless drive motor in the inside of drive wheel tire, and is connected through first bearing, realizes the integrated design of motor and tire. Meanwhile, the wheel hub gear ring is set in the outside of brushless drive motor, and is connected with motor rotor through second bearing, further reduces the overall volume of drive wheel, because of adopting the design of built-in drive motor, reduces the use of motor, reduction gearbox and other independent components in traditional drive wheel, thereby reduces manufacturing cost. In addition, the integrated design also simplifies the assembly process, improves production efficiency.

[0008] Preferably, the inside of the drive wheel tire is provided with a mounting disc, and the middle part of the mounting disc is connected with the first bearing.

[0009] Preferably, the inner wall of the drive wheel tire is roughened and tightly contacted with the outer wall of the wheel hub gear ring, the inner wall of the drive wheel tire is roughened and tightly contacted with the outer wall of the wheel hub gear ring, the friction between the tire and the wheel hub gear ring is increased, and the stability of the drive wheel is improved. Meanwhile, the surface of the gear box cover is provided with a motor mounting hole and a bearing limiting groove, further ensuring the installation stability and operation reliability of the drive wheel.

[0010] Preferably, the two-stage tooth has two, which are respectively arranged on both sides of the motor gear, and the two-stage tooth is engaged with the motor gear, the brushless drive motor is internally provided with a gear box, the motor rotor, the motor stator core, the motor fixed support, the motor gear, the two-stage tooth and other components in the gear box are designed skillfully, and efficient transmission is realized. Especially, the engagement transmission of the two-stage tooth and the motor gear makes the rotation of the drive wheel more stable and powerful.

[0011] Preferably, the axles of the two-stage tooth are movably connected with the motor fixed support through gear shafts.

[0012] Preferably, the surface of the gear box cover is provided with a motor mounting hole and a bearing limiting groove.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the utility model provides a drive wheel with built-in driving motor, which has the following beneficial effects:

[0015] 1、 the drive wheel with built-in driving motor, by built-in brushless driving motor in the drive wheel tire, the structure space required by traditional drive wheel is reduced significantly, so that the overall structure of the floor cleaning robot is more compact, and the miniaturization design and layout of the whole machine are facilitated;

[0016] 2、 the drive wheel with built-in driving motor, the brushless driving motor built-in is combined with the gear box, which helps to improve the mechanical transmission effect, and the meshing connection of the secondary tooth in the gear box and the motor tooth makes the rotation of the drive wheel more stable and powerful, thereby improving the working efficiency and cleaning effect of the floor cleaning robot.

[0017] 3、 the utility model integrates the motor, the reduction gearbox, the hub and the tire, reduces the use of independent components such as the motor and the reduction gearbox in the traditional drive wheel, thereby reducing the manufacturing cost, making the structure of the drive wheel assembly of the floor cleaning robot simple, thereby simplifying the assembly process, facilitating cooperation with the structures of other floor cleaning robots to realize more functions, improving the working efficiency, and being easy to disassemble and maintain, thereby reducing the maintenance difficulty and time cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a drive wheel structure schematic view of the utility model;

[0019] Figure 2 It is a drive wheel structure explosion drawing of the utility model;

[0020] Figure 3 It is a brushless driving motor structure explosion drawing of the utility model;

[0021] Figure 4 It is a drive wheel structure sectional view of the utility model;

[0022] Figure 5 It is a front view schematic view of the drive wheel structure of the utility model;

[0023] Figure 6 It is a rear view schematic view of the drive wheel structure of the utility model.

[0024] In the drawing: 1, drive wheel tire; 2, first bearing; 3, brushless driving motor; 4, second bearing; 5, hub gear ring; 6, motor rotor; 7, motor stator core; 8, motor PCBA; 9, third bearing; 10, motor fixing support; 11, motor tooth; 12, secondary tooth; 13, gear shaft; 14, gear box cover; 15, gear box; 16, mounting disc. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] The present application provides a technical solution, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The utility model provides a drive wheel with built-in driving motor, which comprises a drive wheel tire 1, a brushless driving motor 3 and a wheel hub gear 5, wherein the brushless driving motor 3 is arranged inside the drive wheel tire 1 and connected with the drive wheel tire 1 through a first bearing 2, so that the whole drive wheel has sufficient load capacity and wear resistance, ensuring stable operation for a long time; the brushless design of the motor reduces the maintenance requirement and improves the energy efficiency; the first bearing 2 ensures smooth rotation between the drive wheel tire 1 and the brushless driving motor 3, reducing friction loss; the wheel hub gear 5 is arranged outside the brushless driving motor 3, and the shaft center of the wheel hub gear 5 is connected with the rotor of the brushless driving motor 3 through a second bearing 4; the design of the second bearing 4 enhances the connection stability between the wheel hub gear 5 and the rotor of the brushless driving motor 3, improving the transmission accuracy; the outer wall of the wheel hub gear 5 is in contact with the inner wall of the drive wheel tire 1, which makes the power transmission more direct and reduces energy loss; the brushless driving motor 3 comprises a gear box 15, which provides protection for internal components and ensures the accuracy of gear transmission; a motor rotor 6 is movably arranged in the center of the gear box 15; a motor stator core 7 is lined on the inner wall of the gear box 15; the motor stator core 7 and the motor rotor 6 interact to generate strong rotary torque; a motor fixing support 10 is arranged in the middle of the gear box 15, which ensures stable installation of the motor components; a motor PCBA 8 is arranged on the inner side of the motor fixing support 10, which serves as a control center to realize accurate control of the brushless driving motor 3; the motor rotor 6 is connected with the motor fixing support 10 through a third bearing 9, which further improves the stability of the rotation of the motor rotor 6; the end of the motor rotor 6 protrudes from the surface of the motor fixing support 10 and is coaxially connected with a motor gear 11; a secondary gear 12 is drivingly connected to the outside of the motor gear 11; the meshing design of the motor gear 11 and the secondary gear 12 realizes effective power transmission and speed regulation; a gear box cover 14 is arranged outside the gear box 15, which prevents external impurities from interfering with the internal gear transmission.

[0027] A mounting disc 16 is arranged inside the drive wheel tire 1, and the middle of the mounting disc 16 is connected with the first bearing 2; the design of the mounting disc 16 simplifies the installation process of the drive wheel tire 1 and the first bearing 2.

[0028] The inner wall of the drive wheel tire 1 is roughened and tightly contacted with the outer wall of the wheel hub gear 5; the rough design increases the friction between the two, improving the stability of the transmission.

[0029] The secondary gear 12 has two, which are arranged on the two sides of the motor gear 11 and are in meshing with the motor gear 11; the double-sided meshing design not only improves the stability of the transmission, but also effectively disperses the stress between the gears, prolonging the service life.

[0030] The shafts of the secondary teeth 12 are movably connected with the motor fixing support 10 through the gear shaft 13, and the design of the gear shaft 13 ensures the stable rotation of the secondary teeth 12 and facilitates the subsequent maintenance and replacement.

[0031] The gear box cover 14 is provided with a motor mounting hole and a bearing limiting groove on the surface, which is used for limiting and mounting the motor body and the gear shaft 13.

[0032] The utility model discloses a drive wheel of built-in driving motor, and its core is that the brushless driving motor 3 is built in the drive wheel tire 1, and the power transmission and driving are realized through a series of precise transmission components.

[0033] When the brushless driving motor 3 is connected with the power supply, the motor stator core 7 generates a magnetic field, which interacts with the permanent magnet in the motor rotor 6, thereby generating a rotating torque.

[0034] The motor teeth 11 are engaged with the secondary teeth 12 arranged on the two sides of the motor teeth 11, and when the motor teeth 11 rotate, the secondary teeth 12 are driven to rotate.

[0035] The shafts of the secondary teeth 12 are movably connected with the motor fixing support 10 through the gear shaft 13, and when the secondary teeth 12 rotate, the entire hub gear ring 5 is driven to rotate.

[0036] In the whole transmission process, the first bearing 2, the second bearing 4 and the third bearing 9 respectively play the roles of supporting and limiting.

[0037] The scheme adopts the integrated design of the motor, the reduction gearbox, the hub and the tire, which not only simplifies the assembly process, improves the production efficiency, but also makes the structure of the whole drive wheel more compact and simple.

[0038] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A drive wheel with built-in drive motor, comprising a drive wheel tire, a brushless drive motor and a wheel hub ring gear, the brushless drive motor is arranged inside the drive wheel tire and connected through a first bearing, the wheel hub ring gear is arranged outside the brushless drive motor and connected through a second bearing between the axis of the wheel hub ring gear and the rotor of the brushless drive motor, the outer wall of the wheel hub ring gear is in contact with the inner wall of the drive wheel tire, characterized in that: The brushless driving motor comprises a gear box, a motor rotor movably inserted in the center of the gear box, a motor stator core lined on the inner wall of the gear box, a motor fixing support arranged in the middle of the gear box, a motor PCBA arranged on the inner side of the motor fixing support, the motor rotor and the motor fixing support being connected through a third bearing, the end of the motor rotor extending out of the surface of the motor fixing support and coaxially connected with a motor gear, the motor gear being drivingly connected with two secondary gears, and the gear box being externally sealed with a gear box cover.

2. The drive wheel with a built-in drive motor according to claim 1, characterized in that: The inside of the driving wheel tire is provided with a mounting disc, and the middle of the mounting disc is connected with the first bearing.

3. The drive wheel with an in-wheel drive motor according to claim 1, characterized in that: The inner wall of the driving wheel tire is roughened and tightly contacted with the outer wall of the hub gear ring.

4. The drive wheel with an in-wheel drive motor according to claim 1, characterized by: The two secondary gears are arranged on the two sides of the motor gear respectively and are engaged with the motor gear.

5. The drive wheel with an in-wheel drive motor according to claim 1, characterized by: The shaft centers of the two secondary gears are movably connected with the motor fixing support through a gear shaft.

6. The drive wheel with an in-wheel drive motor according to claim 1, characterized by: The surface of the gear box cover is provided with a motor mounting hole and a bearing limiting groove.

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