Hub motor structure for commercial cleaning robot

Abstract

The hub motor structure comprises a planet carrier, a rotating shaft is arranged in the middle of an inner cavity of the planet carrier, a sun gear is arranged at the end, close to a machine shell, of the upper end of the rotating shaft, and a first inner machine shell and a second inner machine shell are sequentially arranged on one side of the sun gear. An inner gear ring is arranged on the other side, away from the first inner shell and the second inner shell, of the sun gear, and a rotor assembly and a stator assembly are sequentially arranged on the outer side of the rotating shaft. The beneficial effects of the utility model are that the stator and the rotor drive the sun gear and the hub equipped with the inner gear ring, thereby effectively optimizing the power density and the installation technology of the motor, and reducing the sizes of the iron core and the magnetic steel; the reducing mechanism with the reduction ratio i can theoretically reduce the size of i-1 / i, the size and the cost are greatly saved, the planet carrier is adopted for direct output, and compared with inner gear ring output, i (planet carrier) is equal to 1-i (inner gear ring), and the reduction ratio is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hub motors, in particular to a hub motor structure for a commercial cleaning robot. Background Art

[0002] In the existing technology, there are many publicly disclosed patent technologies for Linggu motor structures for industrial applications such as industrial robots and automobiles. However, there are still some shortcomings in practical applications. For example, the existing hub motor structure of industrial robots, in order to solve the problem of large torque requirements, is generally directly driven by a direct-drive motor of the main body. The direct-drive motor has high precision requirements, the iron core part occupies a large proportion of space, and the cost of the magnetic steel is relatively high. The use of a gearbox can effectively reduce the cost of the iron core and the magnetic steel. Utility Model Content

[0003] The purpose of the present utility model is to provide a hub motor structure for a commercial cleaning robot to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hub motor structure for a Shangqing robot, comprising a planetary carrier, a rotating shaft provided in the middle of the inner cavity of the planetary carrier, a sun gear provided at the upper end of the rotating shaft close to one end of the casing, a first internal casing and a second internal casing provided in sequence on one side of the sun gear, an inner gear ring provided on the other side of the sun gear away from the first internal casing and the second internal casing, and a rotor assembly and a stator assembly provided in sequence on the outside of the rotating shaft.

[0005] Further optimized, the rotor assembly is installed through the iron core and the sun gear half shaft.

[0006] Further optimized, the iron core is installed through the first inner casing and the second inner casing, and the rotor is installed on the two inner casings through bearings.

[0007] Further optimized, the first internal casing and the second internal casing are fixedly connected to the casing by screws.

[0008] Further optimized, an inner gear ring is provided on the first inner casing, and the inner gear ring is connected to the stator assembly.

[0009] Further optimized, the planet carrier is the wheel hub, and is connected to the planetary gear through a small shaft and is installed through an elastic retaining ring through the shaft.

[0010] Beneficial effects

[0011] The hub motor structure for the Shangqing robot provided by the utility model has a stator and rotor driving the sun gear and the hub equipped with an inner ring gear, which effectively optimizes the motor power density and installation process and reduces the volume of the iron core and the magnet; the use of a reduction mechanism with a reduction ratio of i can theoretically reduce the volume of i-1 / i, greatly saving volume and cost, and adopts a planetary carrier for direct output. Compared with the inner ring gear output, i (planetary carrier) = 1-i (inner ring gear), which improves the reduction ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] Example

[0015] like Figure 1 As shown, a hub motor structure for a Shangqing robot includes a planetary carrier 1, a rotating shaft 2 is provided in the middle of the inner cavity of the planetary carrier 1, a sun gear 5 is provided at the upper end of the rotating shaft 2 close to the end of the casing 1, a first internal casing 3 and a second internal casing 4 are provided on one side of the sun gear 5 in sequence, an inner gear ring 7 is provided on the other side of the sun gear 5 away from the first internal casing 3 and the second internal casing 4, and a rotor assembly 8 and a stator assembly 9 are provided on the outside of the rotating shaft 2 in sequence.

[0016] In this embodiment, the rotor assembly 8 is installed through the iron core and the half shaft of the sun gear 5, and is stopped by a key pin to transfer the kinetic energy of the rotor to the sun gear.

[0017] The iron core is mounted through the first inner casing 3 and the second inner casing 4, and the rotor is mounted on the two inner casings through bearings.

[0018] The first inner casing 3 and the second inner casing 4 are fixedly connected to the casing 1 by screws.

[0019] An inner gear ring is provided on the first inner housing 3 , and the inner gear ring is connected to the stator assembly 9 and is in a stationary state.

[0020] The planet carrier 1 is the wheel hub and is connected to the planetary gear through a small shaft and is installed through a shaft with an elastic retaining ring.

[0021] The stator and rotor drive the sun gear and the hub mounted with the internal gear ring, effectively optimizing the motor's power density and installation process while reducing the volume of the core and magnets. Using a reduction gear mechanism with a reduction ratio of i can theoretically reduce the volume by i-1 / i, significantly saving both size and cost. This structure utilizes a planetary carrier for direct output, and compared to an internal gear ring output, i(planetary carrier) = 1-i(internal gear ring), improving the reduction ratio.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hub motor structure for a commercial cleaning robot, characterized by: The invention comprises a planetary carrier (1), wherein a rotating shaft (2) is provided in the middle of an inner cavity of the planetary carrier (1), a sun gear (5) is provided at an upper end of the rotating shaft (2) close to the end of the planetary carrier (1), a first inner casing (3) and a second inner casing (4) are provided on one side of the sun gear (5) in sequence, an inner gear ring (7) is provided on the other side of the sun gear (5) away from the first inner casing (3) and the second inner casing (4), and a rotor assembly (8) and a stator assembly (9) are provided on the outer side of the rotating shaft (2) in sequence.

2. The hub motor structure for a commercial cleaning robot according to claim 1, characterized in that: The rotor assembly (8) is mounted via the iron core and the sun gear (5) half-shaft.

3. The hub motor structure for a commercial cleaning robot according to claim 2, characterized in that: The iron core is mounted through the first inner casing (3) and the second inner casing (4), and the rotor is mounted on the two inner casings through bearings.

4. The hub motor structure for a commercial cleaning robot according to claim 1, characterized in that: The first inner casing (3) and the second inner casing (4) are fixedly connected to the planetary frame (1) via screws.

5. The hub motor structure for a commercial cleaning robot according to claim 1, characterized in that: An inner gear ring is provided on the first inner casing (3), and the inner gear ring is connected to the stator assembly (9).

6. The hub motor structure for a commercial cleaning robot according to claim 1, characterized in that: The planetary carrier (1) is a wheel hub, and is connected to the planetary gear via a small shaft and is mounted via a shaft with an elastic retaining ring.

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