CN216693072U - Actuating mechanism, garden instrument and lawn mower - Google Patents
Actuating mechanism, garden instrument and lawn mower Download PDFInfo
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- CN216693072U CN216693072U CN202220259436.2U CN202220259436U CN216693072U CN 216693072 U CN216693072 U CN 216693072U CN 202220259436 U CN202220259436 U CN 202220259436U CN 216693072 U CN216693072 U CN 216693072U
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Abstract
The utility model belongs to the field of garden tools, and particularly relates to a driving mechanism, a garden tool and a mower, wherein the driving mechanism comprises a driving motor, a planetary reducer and wheels; the driving motor comprises a motor shell and a main shaft; the wheel comprises a rim and a tire; the planetary speed reducer is arranged in the rim and comprises a central shaft and a speed reducer shell, and a planetary speed reducing mechanism is arranged between the central shaft and the speed reducer shell; the outer wall of the motor shell is provided with a heat dissipation rib; and fan blades are arranged at one end of the speed reducer shell, which is close to the motor shell. The star-shaped speed reducer is arranged in the space of the inner ring of the wheel, the whole axial size of the driving mechanism is reduced, more transverse spaces are reserved for garden tools such as a mower, and airflow generated by the fan blade exchanges heat with the heat dissipation ribs and the outer wall of the motor shell, so that the driving motor is cooled.
Description
Technical Field
The utility model belongs to the field of garden tools, and particularly relates to a driving mechanism, a garden tool and a mower.
Background
Garden instrument is like lawn mower, snowplow etc, in order to pass through from narrow space such as fence door, its width requirement design is in certain extent, however electric drive garden instrument mainstream on the existing market still adopts parallel shaft gear box and motor drive's mode, this kind of drive mode occupation space is great, thereby to the battery compartment, the design and the installation of other structures such as footboard cause the hindrance, prior art has to set up the battery compartment, structure such as footboard above actuating mechanism, this has just led to garden instrument's focus on the high side, stability descends, in addition, because the installation space is limited, can't reserve sufficient heat dissipation channel, lead to the heat dissipation of electrical equipment such as motor not smooth, influence equipment life.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a driving mechanism, a garden tool and a lawn mower which occupy a small space in the lateral direction and have a self-heat dissipation function.
To achieve the above and other related objects, the present invention provides a driving mechanism including:
a drive motor including a motor housing and a spindle;
a wheel;
a planetary reducer installed at a center of the wheel, the planetary reducer including:
the central shaft is used as a power input end of the planetary speed reducer and is synchronously and rotatably connected with the main shaft;
the speed reducer shell is used as a power output end of the planetary speed reducer and is fixedly connected with the wheel rim;
a planetary reduction mechanism mounted between the central shaft and the reducer case;
the outer wall of the motor shell is provided with a heat dissipation rib;
the fan blade is arranged at one end, close to the motor shell, of the speed reducer shell, and the fan blade is assembled to enable airflow generated by the fan blade to flow through the heat dissipation ribs when the speed reducer shell rotates relative to the motor shell.
In an optional embodiment of the present invention, the planetary reduction mechanism includes a first sun gear, a first planet gear, a rotating support, a second sun gear, a second planet gear, a fixed support, a first ring gear and a second ring gear; the first sun gear is arranged in a synchronous rotating mode with the central shaft, the rotating support is connected with the central shaft in a rotating mode, the first planet gear is connected with the rotating support in a rotating mode, the second sun gear is arranged in a synchronous rotating mode with the rotating support, the second planet gear is connected with the fixing support in a rotating mode, the fixing support is fixedly connected with the motor shell, the first inner gear ring and the second inner gear ring are arranged in a synchronous rotating mode with the reducer shell respectively, the first planet gear is meshed with the first sun gear and the first inner gear ring respectively, and the second planet gear is meshed with the second sun gear and the second inner gear ring respectively.
In an alternative embodiment of the present invention, the fixing bracket and the motor housing are provided as an integral structure.
In an optional embodiment of the present invention, the rotating bracket includes a first part and a second part which are separately arranged, the first planet gear is rotatably arranged on the first part, the second sun gear is relatively fixed to the second part, and the first part and the second part form a synchronous rotation fit through a key or a tooth.
In an alternative embodiment of the present invention, the reducer case is rotatably connected to the fixed bracket by a bearing.
In an optional embodiment of the utility model, an end cover is arranged at one end of the reducer casing far away from the driving motor.
In an alternative embodiment of the utility model, the central shaft and the main shaft are provided as a one-piece structure.
In an optional embodiment of the present invention, the fan blade includes an annular substrate and blades uniformly arranged along a circumferential direction of the annular substrate, a flange is disposed at one end of the reducer housing close to the motor housing, the annular substrate is mounted on the flange and faces one side of the driving motor, and the blades protrude toward the heat dissipation rib.
In an optional embodiment of the present invention, the heat dissipation rib is protruded along a radial direction of the motor housing, the heat dissipation rib is in a long strip shape, and a length direction of the heat dissipation rib is parallel to an axial direction of the spindle.
In an optional embodiment of the utility model, the motor further comprises an electromagnetic brake, and the electromagnetic brake is positioned at one end of the motor shell far away from the planetary reducer.
To achieve the above and other related objects, the present invention also provides a gardening tool, comprising:
the machine body is provided with a plurality of machine bodies,
the driving mechanisms are respectively arranged on two sides of the machine body and comprise driving motors, planetary reducers and wheels;
the driving motor comprises a motor shell and a main shaft;
the planetary reducer is installed at the center of the wheel, and includes:
the central shaft is used as a power input end of the planetary speed reducer and is synchronously and rotatably connected with the main shaft;
the speed reducer shell is used as a power output end of the planetary speed reducer and is fixedly connected with the wheels;
a planetary reduction mechanism mounted between the central shaft and the reducer case;
the outer wall of the motor shell is provided with a heat dissipation rib;
the motor is characterized in that one end, close to the motor shell, of the speed reducer shell is provided with a fan blade, and the fan blade is assembled in such a way that when the speed reducer shell rotates relative to the motor shell, airflow generated by the fan blade can flow through the heat dissipation ribs.
To achieve the above and other related objects, the present invention also provides a lawn mower comprising:
a body;
a mowing mechanism mounted on the body;
the driving mechanisms are respectively arranged on two sides of the machine body and comprise driving motors, planetary reducers and wheels;
the driving motor comprises a motor shell and a main shaft;
the planetary reducer is installed at the center of the wheel, and includes:
the central shaft is used as a power input end of the planetary speed reducer and is synchronously and rotatably connected with the main shaft;
the speed reducer shell is used as a power output end of the planetary speed reducer and is fixedly connected with the wheels;
a planetary reduction mechanism mounted between the central shaft and the reducer case;
the outer wall of the motor shell is provided with a heat dissipation rib;
the motor is characterized in that one end, close to the motor shell, of the speed reducer shell is provided with a fan blade, and the fan blade is assembled in such a way that when the speed reducer shell rotates relative to the motor shell, airflow generated by the fan blade can flow through the heat dissipation ribs.
The utility model has the technical effects that:
the planetary reducer is arranged in the rim, so that the planetary reducer can be understood as a supporting shaft of a wheel, the planetary reducer can realize speed reduction transmission with a larger transmission ratio by using a shorter axial space, on the basis, the planetary reducer is arranged in the space of the inner ring of the wheel, the whole axial size of the driving mechanism is further reduced, the planetary reducer is embodied in garden tools such as a mower, the transverse width of the garden tools such as the mower is reduced, or more transverse spaces flow out of the garden tools such as the mower under the condition of the same width, and the spaces can be used for installing structures such as a battery bin, a standing pedal and the like, so that the gravity center of the garden tools such as the mower can be designed to be lower, and the stability of the planetary reducer is improved.
The air current that the fan blade produced is followed motor housing's outer wall flows, and the flow direction of air current is roughly parallel with driving motor's axial, and the heat dissipation muscle sets up to rectangular form, forms airflow channel between the adjacent heat dissipation muscle, and this airflow channel is parallel with driving motor's axis direction, the air current that the fan blade produced can unobstructed pass through from each heat dissipation muscle both sides, the air current through the time with heat dissipation muscle and motor housing's outer wall carries out the heat exchange to the realization is to driving motor's cooling.
The fixing support and the motor shell are integrally machined and formed, so that on one hand, the assembly process can be simplified, the assembly cost is reduced, on the other hand, the structure of the whole machine is more compact, and the accumulated assembly error of the whole machine is reduced.
The electromagnetic brake and the driving motor share the same shell, so that the equipment structure is further simplified, the assembly cost is reduced, and the assembly error is reduced.
Drawings
FIG. 1 is a perspective view of a lawn mower provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the drive mechanism provided by the embodiment of the present invention with the wheels hidden;
FIG. 3 is an exploded view of the drive mechanism provided by the embodiment of the present invention, with the wheels hidden;
FIG. 4 is a schematic diagram of the drive motor and planetary gear set of the present invention;
FIG. 5 is a perspective view of an electrode housing provided by an embodiment of the present invention;
fig. 6 is a perspective view of a fan blade provided in an embodiment of the present invention;
FIG. 7 is a perspective view of a retarder housing provided by an embodiment of the present invention;
fig. 8 is an exploded view of a rotating bracket and its associated components provided by an embodiment of the present invention.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Referring to fig. 1-8, the present invention is described in detail with reference to a lawn mower, and it should be understood that the driving mechanism of the present invention is not limited to lawn mowers, such as snow plows, sweeper, hedge trimmers, and other garden tools.
Referring to fig. 1, a lawn mower includes a main body 1 and two sets of driving mechanisms 100, where the two sets of driving mechanisms 100 are respectively disposed on two sides of the main body 1, in this embodiment, two steering wheels are disposed at a front end of the main body 1, and the driving mechanisms 100 include a driving motor 10, a planetary reducer 20, and wheels 30; the wheels 30 of the two sets of drive mechanisms 100 are mounted to the rear end of the body 1 as rear wheels, and in one embodiment, for example, a mowing mechanism may be provided between the steerable wheels and the rear wheels, the mowing actuator typically including a cutting blade and a header, and a separate motor for driving the cutting blade. It will be appreciated that the mowing mechanism may be provided not only between the front and rear wheels, but also on the front, rear or side of the body, and that a seat may be provided above the body 1, for example, for an operator to ride on the mower, and a corresponding joystick may be provided at the front end of the seat, for example, for controlling walking, mowing and the like of the mower. In a specific embodiment, the battery pack compartment may be located at the rear end of the body 1, for example, and the two sets of driving mechanisms 100 may be disposed on two sides of the body or below the body, for example.
It should be noted that the drive mechanism 100 of the present invention should be capable of being adapted for a wide variety of applications, and is not limited to a particular type of mower style. For example, the lawn mower may be a walk-behind lawn mower or a stand-up lawn mower, and the change in the form of the lawn mower does not substantially affect the structure and function of the present invention, and the driving mechanism 100 of the present invention has a high degree of integration, so that the present invention has high compatibility with most types of garden tools.
Referring to fig. 3 and 5, the driving motor 10 includes a motor housing 12 and a spindle 11; it will be appreciated that the drive motor 10 should also have the necessary stator and rotor, wherein the stator is fixedly connected to the motor housing 12 and the rotor is connected to the main shaft 11.
Referring to fig. 1, the wheel 30 includes a rim 31 and a tire 32; it should be noted that, in the present invention, the rim 31 refers to a rigid supporting structure of the inner ring of the wheel 30, and the tire 32 refers to an elastic buffer structure of the periphery of the wheel 30, generally, the rim 31 and the tire 32 are of a split structure, but the possibility that the two are of an integral structure is not excluded, and for example, an integrally formed non-pneumatic wheel may also be adopted, which also belongs to the protection scope of the present invention.
Referring to fig. 2, 3 and 4, the planetary reducer 20 is mounted in the rim 31, and the planetary reducer 20 includes a central shaft 21, a reducer casing 22 and a planetary reduction mechanism; specifically, the central shaft 21 is used as a power input end of the planetary reducer 20 and is connected with the main shaft 11 in a synchronous rotation manner; the reducer casing 22 is used as a power output end of the planetary reducer 20 and is fixedly connected with the rim 31; the planetary reduction mechanism is mounted between the center shaft 21 and the reduction gear case 22. The planetary reducer 20 is arranged in the rim 31, the planetary reducer 20 is used as a supporting shaft of the wheel 30, the planetary reducer can realize speed reduction transmission with a large transmission ratio by using a short axial space, on the basis, the planetary reducer is arranged in the inner ring space of the wheel 30, the whole axial size of the driving mechanism 100 is further reduced, the driving mechanism is embodied in garden tools such as a mower, the transverse width of the garden tools such as the mower is reduced, or more transverse spaces are reserved for the garden tools such as the mower under the condition of the same width, the spaces can be used for installing structures such as a battery bin, a standing pedal and the like, the gravity center of the garden tools such as the mower can be designed to be lower, and the stability of the garden tools can be improved.
Referring to fig. 2 and 5, further, a heat dissipation rib 121 is disposed on an outer wall of the motor housing 12; one end of the speed reducer casing 22 close to the motor casing 12 is provided with a fan blade 40, and the fan blade 40 is configured such that when the speed reducer casing 22 rotates relative to the motor casing 12, an airflow generated by the fan blade 40 can flow through the heat dissipation rib 121. In an embodiment, the heat dissipation rib 121 protrudes along a radial direction of the motor housing 12, the heat dissipation rib 121 is long, and a length direction of the heat dissipation rib 121 is parallel to an axial direction of the spindle 11; the fan blade 40 includes an annular substrate 41 and blades 42 uniformly arranged along the circumferential direction of the annular substrate 41, a flange 221 is disposed at one end of the reducer casing 22 close to the motor casing 12, the annular substrate 41 is mounted on the flange 221 and faces one side of the driving motor 10, and the blades 42 are protruded toward the heat dissipation ribs 121. In this embodiment, the airflow generated by the fan blade 40 flows along the outer wall of the motor housing 12, and the flow direction of the airflow is substantially parallel to the axial direction of the driving motor 10, in this embodiment, the heat dissipation ribs 121 are configured to be long, an airflow channel is formed between adjacent heat dissipation ribs 121, the airflow channel is parallel to the axial direction of the driving motor 10, the airflow generated by the fan blade 40 can pass through both sides of each heat dissipation rib 121 without obstruction, and the airflow exchanges heat with the heat dissipation ribs 121 and the outer wall of the motor housing 12 when passing through, so as to cool the driving motor 10.
It should be understood that, in the present invention, the specific structure of the blade 40 is not limited to the portion defined in the above embodiment, for example, the blade 40 may also be provided as an integral structure with the reducer casing 22, specifically, for example, the blade 42 is directly machined at the end of the reducer casing 22, and the blade 42 may be integrally machined with the reducer casing 22 by casting or machining, for example. Similarly, the specific structure of the heat dissipating rib 121 is not limited to the parts defined in the above embodiments, for example, the heat dissipating rib 121 and the motor housing 12 may be configured as a split structure, and the heat dissipating rib 121 may be made of a copper material or an aluminum material with better heat conductivity, so as to improve the heat dissipating effect and reduce the manufacturing cost of the entire machine.
Referring to fig. 2, 3 and 4, the planetary reduction mechanism includes a first sun gear 23, a first planet gear 24, a rotating bracket 25, a second sun gear 26, a second planet gear 27, a fixed bracket 28, a first ring gear 29 and a second ring gear 210; the first sun gear 23 and the central shaft 21 are arranged in a synchronous rotating mode, the rotating support 25 is connected with the central shaft 21 in a rotating mode, the first planet gear 24 is connected with the rotating support 25 in a rotating mode, the second sun gear 26 is arranged in a synchronous rotating mode with the rotating support 25, the second planet gear 27 is connected with the fixed support 28 in a rotating mode, the fixed support 28 is fixedly connected with the motor shell 12, the first inner gear ring 29 and the second inner gear ring 210 are arranged in a synchronous rotating mode with the speed reducer shell 22 respectively, the first planet gear 24 is meshed with the first sun gear 23 and the first inner gear ring 29 respectively, and the second planet gear 27 is meshed with the second sun gear 26 and the second inner gear ring 210 respectively. It can be understood that the utility model adopts two-stage planetary gear speed reduction, and can output larger torque under the condition of certain power of the driving motor 10, so that the mower can adapt to most of complex working conditions.
Referring to fig. 5, as a further embodiment of the present invention, the fixing bracket 28 and the motor housing 12 are formed as an integral structure, and it can be understood that the fixing bracket 28 and the motor housing 12 are integrally formed, so as to simplify the assembly process, reduce the accumulated assembly error of the whole machine, reduce the assembly cost, make the whole machine structure more compact, and further save the lateral space of the lawn mower.
Referring to fig. 8, the rotating bracket 25 includes a first member 251 and a second member 252 which are separately arranged, the first planet gear 24 is rotatably arranged on the first member 251, the second sun gear 26 is relatively fixed to the second member 252, and the first member 251 and the second member 252 form a synchronous rotating fit through a key or teeth. Specifically, the first member 251 includes a disk-shaped body, a spline hole is formed in the center of the disk-shaped body, the disk-shaped body includes three first planet gears 24, and the first planet gears 24 are arranged around the spline hole along the circumferential direction of the disk-shaped body; the second member 252 includes a tubular shaft body, and a spline that is matched with the spline hole is disposed on an upper outer wall of the tubular shaft body, in this embodiment, the second sun gear 26 is fixedly connected with the tubular shaft body, and the second sun gear 26 may be interference-assembled with the tubular shaft body through processes such as cold sleeve and hot sleeve. It is understood that the assembly of the second sun gear 26 and the tubular shaft is not limited to the above embodiment, and in fact, the assembly of the second sun gear 26 and the tubular shaft, which enables the two to rotate synchronously, falls within the scope of the present invention. It will be appreciated that the present invention provides the rotating carrier 25 in two parts to facilitate assembly of the first planet gear 24 and the second sun gear 26, respectively.
Referring to fig. 2 and 4, the reducer housing 22 is rotatably connected to the fixing bracket 28 through a bearing, it can be understood that, in the present invention, the motor housing 12 not only serves as a supporting structure for the driving motor 10, but also serves as a supporting structure for the entire wheel 30, and when the reducer housing 22 is fixedly connected to the wheel 30, which is equivalent to the wheel 30, and is rotatably disposed on the motor housing 12, the motor housing 12 serves as a supporting shaft for the wheel 30, so that the structure of the driving mechanism 100 is more compact.
Referring to fig. 2, an end cover 222 is disposed on an end of the reducer casing 22 away from the driving motor 10, and a sliding seal ring is disposed between an end of the reducer casing 22 close to the driving motor 10 and the fixing bracket 28, it can be understood that the reducer casing 22 and the end cover 222 form a sealed gear box, and lubricating oil can be injected into the gear box to further improve the transmission efficiency of the planetary reduction mechanism.
Referring to fig. 3, the central shaft 21 and the main shaft 11 are integrated, so as to further simplify the assembly process, reduce the assembly error, and improve the transmission efficiency.
Referring to fig. 1, spokes are provided on the inner side of the rim 31, and the spokes are connected to the flange 221 on the side facing away from the driving motor 10. In this embodiment, the wheel 30 is mounted in the same manner as the conventional wheel 30, and the wheel 30 can be flexibly replaced and maintained independently.
Referring to fig. 2 and 3, the electric vehicle further includes an electromagnetic brake 50, and the electromagnetic brake 50 is located at an end of the motor housing 12 far away from the planetary reducer 20. In the utility model, the electromagnetic brake 50 and the driving motor 10 share the same shell, so that the equipment structure is further simplified, the assembly cost is reduced, and the assembly error is reduced.
In summary, the planetary reducer 20 is installed in the rim 31, it can be understood that the planetary reducer 20 is used as a supporting shaft of the wheel 30, and the planetary reducer can realize speed reduction transmission with a large transmission ratio by using a short axial space, on the basis, the planetary reducer is placed in the inner ring space of the wheel 30, so that the overall axial size of the driving mechanism 100 is further reduced, the driving mechanism is embodied in garden tools such as a lawn mower, namely, the transverse width of the garden tools such as the lawn mower is reduced, or more transverse spaces flow out for the garden tools such as the lawn mower under the same width condition, and the spaces can be used for installing structures such as a battery compartment and a standing pedal, so that the center of gravity of the garden tools such as the lawn mower can be designed to be lower, and the stability of the garden tools can be improved. The air flow generated by the fan blade 40 flows along the outer wall of the motor housing 12, the flowing direction of the air flow is approximately parallel to the axial direction of the driving motor 10, the heat dissipation ribs 121 are arranged in a long strip shape, an air flow channel is formed between the adjacent heat dissipation ribs 121 and is parallel to the axial direction of the driving motor 10, the air flow generated by the fan blade 40 can pass through the two sides of each heat dissipation rib 121 without obstruction, and the air flow exchanges heat with the heat dissipation ribs 121 and the outer wall of the motor housing 12 when passing through, so that the driving motor 10 is cooled. The fixing bracket 28 and the motor shell 12 are integrally machined and formed, so that on one hand, the assembly process can be simplified, the assembly cost is reduced, on the other hand, the structure of the whole machine is more compact, and the accumulated assembly error of the whole machine is reduced. The electromagnetic brake 50 and the driving motor 10 share the same shell, so that the equipment structure is further simplified, the assembly cost is reduced, and the assembly error is reduced.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that an embodiment of the utility model can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of embodiments of the utility model.
Reference throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and not necessarily in all embodiments, of the present invention. Thus, appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined in any suitable manner with one or more other embodiments. It is to be understood that other variations and modifications of the embodiments of the utility model described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the present invention.
It will also be appreciated that one or more of the elements shown in the figures can also be implemented in a more separated or integrated manner, or even removed for inoperability in some circumstances or provided for usefulness in accordance with a particular application.
Additionally, any reference arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise expressly specified. Further, as used herein, the term "or" is generally intended to mean "and/or" unless otherwise indicated. Combinations of components or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.
As used in the description herein and throughout the claims that follow, "a," "an," and "the" include plural references unless otherwise indicated. Also, as used in the description herein and throughout the claims that follow, the meaning of "in …" includes "in …" and "on …" unless otherwise indicated.
The above description of illustrated embodiments of the utility model, including what is described in the abstract of the specification, is not intended to be exhaustive or to limit the utility model to the precise forms disclosed herein. While specific embodiments of, and examples for, the utility model are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the present invention and are to be included within the spirit and scope of the present invention.
The systems and methods have been described herein in general terms as the details aid in understanding the utility model. Furthermore, various specific details have been given to provide a general understanding of the embodiments of the utility model. One skilled in the relevant art will recognize, however, that an embodiment of the utility model can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the utility model.
Thus, although the present invention has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of the utility model will be employed without a corresponding use of other features without departing from the scope and spirit of the utility model as set forth. Thus, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present invention. It is intended that the utility model not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the utility model is to be determined solely by the appended claims.
Claims (12)
1. A drive mechanism, comprising:
a drive motor including a motor housing and a spindle;
a wheel;
a planetary reducer installed at a center of the wheel, the planetary reducer including:
the central shaft is used as a power input end of the planetary speed reducer and is synchronously and rotatably connected with the main shaft;
the speed reducer shell is used as a power output end of the planetary speed reducer and is fixedly connected with the wheels;
a planetary reduction mechanism mounted between the central shaft and the reducer case;
the outer wall of the motor shell is provided with a heat dissipation rib;
the motor is characterized in that one end, close to the motor shell, of the speed reducer shell is provided with a fan blade, and the fan blade is assembled in such a way that when the speed reducer shell rotates relative to the motor shell, airflow generated by the fan blade can flow through the heat dissipation ribs.
2. The drive mechanism of claim 1, wherein the planetary reduction mechanism includes a first sun gear, a first planet gear, a rotating carrier, a second sun gear, a second planet gear, a fixed carrier, a first ring gear, and a second ring gear; the first sun gear is arranged in a synchronous rotating mode with the central shaft, the rotating support is connected with the central shaft in a rotating mode, the first planet gear is connected with the rotating support in a rotating mode, the second sun gear is arranged in a synchronous rotating mode with the rotating support, the second planet gear is connected with the fixing support in a rotating mode, the fixing support is fixedly connected with the motor shell, the first inner gear ring and the second inner gear ring are arranged in a synchronous rotating mode with the reducer shell respectively, the first planet gear is meshed with the first sun gear and the first inner gear ring respectively, and the second planet gear is meshed with the second sun gear and the second inner gear ring respectively.
3. The drive mechanism as recited in claim 2, wherein the fixed bracket is provided as a unitary structure with the motor housing.
4. The driving mechanism as claimed in claim 2, wherein the rotating bracket includes a first member and a second member which are separately arranged, the first planetary gear is rotatably arranged on the first member, the second sun gear is fixedly connected with the second member, and the first member and the second member are in synchronous rotation fit through a key or a tooth.
5. The drive mechanism as recited in claim 2, wherein the reducer housing is rotatably coupled to the stationary bracket by a bearing.
6. The drive mechanism as recited in claim 2, wherein an end cap is provided on an end of the reducer housing remote from the drive motor.
7. The drive mechanism as recited in claim 1, wherein the central shaft and the main shaft are provided as a unitary structure.
8. The driving mechanism as claimed in claim 1, wherein the fan blade includes an annular base plate and blades uniformly arranged along a circumferential direction of the annular base plate, a flange is provided at one end of the reducer housing close to the motor housing, the annular base plate is mounted on the flange and faces one side of the driving motor, and the blades protrude toward the heat dissipating ribs.
9. The drive mechanism according to claim 1, wherein the heat dissipating rib protrudes in a radial direction of the motor housing, the heat dissipating rib is elongated, and a length direction of the heat dissipating rib is parallel to an axial direction of the main shaft.
10. The drive mechanism as recited in claim 1, further comprising an electromagnetic brake located at an end of the motor housing remote from the planetary reducer.
11. A garden tool, comprising:
a body;
the driving mechanisms are respectively arranged on two sides of the machine body and comprise driving motors, planetary reducers and wheels;
the driving motor comprises a motor shell and a main shaft;
the planetary reducer is installed at the center of the wheel, and includes:
the central shaft is used as a power input end of the planetary speed reducer and is synchronously and rotatably connected with the main shaft;
the speed reducer shell is used as a power output end of the planetary speed reducer and is fixedly connected with the wheels;
a planetary reduction mechanism mounted between the central shaft and the reducer case;
the outer wall of the motor shell is provided with a heat dissipation rib;
the motor is characterized in that one end, close to the motor shell, of the speed reducer shell is provided with a fan blade, and the fan blade is assembled in such a way that when the speed reducer shell rotates relative to the motor shell, airflow generated by the fan blade can flow through the heat dissipation ribs.
12. A lawn mower, comprising:
a body;
a mowing mechanism mounted on the body;
the driving mechanisms are respectively arranged on two sides of the machine body and comprise driving motors, planetary reducers and wheels;
the driving motor comprises a motor shell and a main shaft;
the planetary reducer is installed at the center of the wheel, and includes:
the central shaft is used as a power input end of the planetary speed reducer and is synchronously and rotatably connected with the main shaft;
the speed reducer shell is used as a power output end of the planetary speed reducer and is fixedly connected with the wheels;
a planetary reduction mechanism mounted between the central shaft and the reducer case;
the outer wall of the motor shell is provided with a heat dissipation rib;
the motor is characterized in that one end, close to the motor shell, of the speed reducer shell is provided with a fan blade, and the fan blade is assembled in such a way that when the speed reducer shell rotates relative to the motor shell, airflow generated by the fan blade can flow through the heat dissipation ribs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220259436.2U CN216693072U (en) | 2022-02-08 | 2022-02-08 | Actuating mechanism, garden instrument and lawn mower |
| PCT/CN2022/115745 WO2023030296A1 (en) | 2021-09-01 | 2022-08-30 | Garden tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220259436.2U CN216693072U (en) | 2022-02-08 | 2022-02-08 | Actuating mechanism, garden instrument and lawn mower |
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| Publication Number | Publication Date |
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| CN216693072U true CN216693072U (en) | 2022-06-07 |
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| CN202220259436.2U Active CN216693072U (en) | 2021-09-01 | 2022-02-08 | Actuating mechanism, garden instrument and lawn mower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023030296A1 (en) * | 2021-09-01 | 2023-03-09 | 格力博(江苏)股份有限公司 | Garden tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023030296A1 (en) * | 2021-09-01 | 2023-03-09 | 格力博(江苏)股份有限公司 | Garden tool |
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