Outer rotor hub motor and mower

Abstract

According to the outer rotor hub motor and the mower provided by the invention, the rotor mechanism rotates relative to the stator mechanism, the rotor mechanism drives the first speed reducing mechanism to rotate so as to drive the second speed reducing mechanism to rotate and enable the external connecting shell to rotate, and the two speed reducing mechanisms are arranged in the outer rotor hub motor, so that the speed reducing ratio is increased; the output torque of the motor is increased, so that the motor has stronger driving force, and the efficiency of the motor is improved. According to the mower, the outer rotor hub motor is adopted, and the connecting shell is connected with the hub of the mower, so that the mower obtains stronger driving force, and the efficiency is higher during mowing operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to an outer rotor wheel hub motor and a mower. BACKGROUND

[0002] The mower is a mechanical tool for trimming lawns, vegetation, etc., which is generally composed of a cutter head, an engine, a walking wheel, a walking mechanism, a blade, a handrail, and a control part. The cutter head is mounted on the walking wheel, and the engine is mounted on the cutter head. The output shaft of the engine is provided with a blade. The blade cuts the lawn or vegetation by high-speed rotation of the engine. The mower is widely used in lawn trimming and maintenance in places such as family courtyards, parks, schools, and golf courses, as well as in the harvesting of pasture grass in agricultural production. With the improvement of environmental awareness, the market demand for environmentally friendly mowers such as electric mowers and solar mowers is gradually increasing.

[0003] With the development of mower technology, higher requirements are put forward for the electric motor of the electric mower. Currently, the wheel hub motor used in the electric mower has the problems of small output torque of the motor and weak driving force. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the present application is that with the development of mower technology, higher requirements are put forward for the electric motor of the electric mower. Currently, the wheel hub motor used in the electric mower has the problems of small output torque of the motor and weak driving force.

[0005] In order to solve the above problems, in order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an outer rotor wheel hub motor and a mower.

[0006] In a first aspect, the utility model discloses an outer rotor wheel hub motor, which comprises a first output shaft, a stator mechanism, a rotor mechanism, a first reduction mechanism, a second reduction mechanism and a connecting shell.

[0007] The rotor mechanism is connected with the first reduction mechanism, the first reduction mechanism is connected with the second reduction mechanism, the second reduction mechanism is connected with the connecting shell, the first output shaft is connected with the second reduction mechanism, and the first output shaft is connected with the connecting shell.

[0008] The stator mechanism, the rotor mechanism, the first reduction mechanism and the second reduction mechanism are arranged in the connecting shell. The stator mechanism and the rotor mechanism rotate relative to each other. The first output shaft extends outward from the connecting shell. The connecting shell rotates relative to the first output shaft.

[0009] Preferably, the utility model comprises a motor support and a second output shaft, and the motor support and the second output shaft are mounted in the connecting shell.

[0010] The first output shaft is connected with the second reduction mechanism, the second output shaft is connected with the motor support, the second output shaft is connected with the rotor mechanism, the first output shaft and the second output shaft are in the same straight line, and the first output shaft and the second output shaft pass through the center line of the motor support;

[0011] The second output shaft rotates relative to the motor support and the first output shaft, and the motor support is connected with the first reduction mechanism and the second reduction mechanism respectively.

[0012] Preferably, the connecting shell comprises a first outer end cover and a second outer end cover, and the first outer end cover is connected with the second outer end cover in a clamping manner.

[0013] The first outer end cover is provided with a first opening, and the first output shaft extends outward from the first opening.

[0014] Preferably, the connecting shell comprises a first bearing and a second bearing, and the first bearing is connected with the first outer end cover and the first output shaft respectively.

[0015] The second bearing is connected with the second outer end cover and the second output shaft respectively.

[0016] Preferably, the connecting shell comprises a brake, and the brake is connected with the motor support and the second output shaft respectively.

[0017] Preferably, the brake comprises a rotating part and a fixed part, the rotating part is connected with the second output shaft, the fixed part is connected with the motor support, and the fixed part is magnetically connected with the rotating part through magnetic action after being electrified.

[0018] Preferably, the first reduction mechanism comprises a first sun gear, at least three first planetary gears and a first inner ring gear, and the first planetary gears are engaged with the first sun gear and the first inner ring gear respectively.

[0019] The first sun gear is installed at the center of the motor support, the first sun gear is connected with the second output shaft, and the first inner ring gear is fixedly connected with the motor support.

[0020] Preferably, the second reduction mechanism comprises a second sun gear, at least three second planetary gears and a second inner ring gear, and the second planetary gears are engaged with the second sun gear and the second inner ring gear respectively.

[0021] The second sun gear is connected with the first planetary gear, the second planetary gear is connected with the motor support, and the second inner ring gear is connected with the first outer end cover.

[0022] Preferably, a control module is included, which is connected to the stator mechanism and the brake, respectively;

[0023] The control module includes a connecting line, and the first output shaft is hollow, and the connecting line extends out of the hollow position of the first output shaft.

[0024] In a second aspect, the utility model discloses a mower which comprises the outer rotor wheel hub motor of any one of the above.

[0025] Compared with the prior art, the above technical solution provided by the application has the following advantages:

[0026] The outer rotor wheel hub motor and the mower provided by the application are mentioned, the rotor mechanism rotates relative to the stator mechanism, the rotor mechanism drives the first speed reduction mechanism to rotate, thereby driving the second speed reduction mechanism to rotate, and the connecting shell outside is rotated, two speed reduction mechanisms are arranged in the outer rotor wheel hub motor, the speed reduction ratio is increased, the output torque of the motor is increased, the motor has stronger driving force, and the efficiency of the motor is improved.

[0027] The mower is mentioned, the outer rotor wheel hub motor is adopted, the connecting shell is connected to the wheel hub of the mower, the mower has stronger driving force, and the efficiency is higher when the mower is operated.

[0028] Further, the wheel hub motor is provided with a brake, the wheel hub motor can have the function of power-off braking, and the rotation of the connecting shell can be quickly stopped. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings incorporated into the specification and forming a part thereof show, in accordance with the embodiments of the present utility model, and together with the specification, serve to explain the principle of the present utility model.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 It is a structural schematic view of the outer rotor wheel hub motor provided by the application;

[0032] Figure 2 It is an exploded structural schematic view of the outer rotor wheel hub motor provided by the application;

[0033] Figure 3 It is a structural schematic view of the outer rotor wheel hub motor provided by the application Figure 2 ;

[0034] Figure 4 A-A' is a cross-sectional structure schematic diagram of the outer rotor motor hub motor; Figure 3

[0035] Figure 5 A motor bracket, a first output shaft, a stator mechanism, a rotor mechanism, and a first speed reduction mechanism of an outer rotor motor hub motor provided by the present application are shown in the connection structure schematic diagram;

[0036] Figure 6 A structure schematic diagram of a motor bracket of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram;

[0037] Figure 7 A brake, a stator mechanism, and a rotor mechanism of an outer rotor motor hub motor provided by the present application are shown in the connection structure schematic diagram;

[0038] Figure 8 A structure schematic diagram of a brake of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram; Figure 1 ;

[0039] Figure 9 A structure schematic diagram of a brake of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram; Figure 2 ;

[0040] Figure 10 A first speed reduction mechanism and a second speed reduction mechanism of an outer rotor motor hub motor provided by the present application are shown in the connection structure schematic diagram;

[0041] Figure 11 A first speed reduction mechanism and a second speed reduction mechanism of an outer rotor motor hub motor provided by the present application are shown in the connection structure schematic diagram;

[0042] Figure 12 A structure schematic diagram of a first speed reduction mechanism of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram; Figure 1 ;

[0043] Figure 13 A structure schematic diagram of a first speed reduction mechanism of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram; Figure 2 ;

[0044] Figure 14 A structure schematic diagram of a second speed reduction mechanism of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram; Figure 1 ;

[0045] Figure 15 A structure schematic diagram of a second speed reduction mechanism of an outer rotor motor hub motor provided by the present application is shown in the connection structure schematic diagram; Figure 2 .

[0046] Explanation of reference signs:

[0047] 1. An outer rotor motor hub motor; ​

[0048] 11, motor support; 111, first output shaft; 112, second output shaft; 113, mounting slot; 114, through hole; 115, rotating bearing;

[0049] 12, stator mechanism;

[0050] 13, rotor mechanism;

[0051] 14, first reduction mechanism; 141, first sun gear; 142, first planetary gear; 1421, first driving shaft; 143, first inner ring gear;

[0052] 15, second reduction mechanism; 151, second sun gear; 1511, connecting piece; 152, second planetary gear; 1521, second driving shaft; 1522, driving bearing; 153, second inner ring gear; 154, gear carrier; 1541, fixing column; 1542, fixing position; 1543, gear slot;

[0053] 16, connecting shell; 161, first outer end cover; 1611, first opening; 1612, first bearing; 1613, second sealing element; 162, second outer end cover; 1621, second bearing;

[0054] 17, brake; 171, rotating element; 172, fixing element;

[0055] 18, control module; 181, connecting wire. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are 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.

[0057] In the first aspect, refer to Figures 1-15The utility model discloses an outer rotor wheel hub motor 1 can connect the equipment with wheel hub, such as lawn mower, vehicle and so on, is used for providing driving power, including first output shaft 111, stator mechanism 12, rotor mechanism 13, first reduction mechanism 14, second reduction mechanism 15 with connecting shell 16, rotor mechanism 13 with first reduction mechanism 14 is connected, first reduction mechanism 14 with second reduction mechanism 15 is connected, second reduction mechanism 15 with connecting shell 16 is connected, first output shaft 111 with second reduction mechanism 15 is connected, first output shaft 111 with connecting shell 16 is connected, stator mechanism 12, rotor mechanism 13, first reduction mechanism 14, second reduction mechanism 15 are arranged in connecting shell 16, stator mechanism 12 with rotor mechanism 13 opposite rotation, first output shaft 111 from connecting shell 16 stretches to outside, connecting shell 16 relative to first output shaft 111 rotation.

[0058] Specifically, rotor mechanism 13 relative to stator mechanism 12 rotation, rotor mechanism 13 can drive first reduction mechanism 14 rotation, first reduction mechanism 14 drives second reduction mechanism 15 rotation, second reduction mechanism 15 drives connecting shell 16 rotation, connecting shell 16 relative to first output shaft 111 rotation, first output shaft 111 fixed mounting in the equipment, connecting shell 16 is output end, drives the mechanism (such as wheel hub etc.) rotation of waiting.

[0059] Can understand, rotor mechanism 13 relative to stator mechanism 12 rotation, rotor mechanism 13 drives first reduction mechanism 14 rotation, thereby drives second reduction mechanism 15 rotation, makes external connecting shell 16 rotation, through setting two reduction mechanisms, increases the reduction ratio, increases the output torque of motor, makes motor have stronger driving force, improves the efficiency of motor. Further, the wheel hub motor is provided with the brake 17, can let the wheel hub motor have the function of power-off brake, quickly stops the rotation of connecting shell 16.

[0060] The outer rotor wheel hub motor 1 includes a motor support 11 and a second output shaft 112, the motor support 11 and the second output shaft 112 are installed in the connecting shell 16, the first output shaft 111 is connected with the second reduction mechanism 15, the second output shaft 112 is connected with the rotor mechanism 13, the first output shaft 111 and the second output shaft 112 are in the same straight line, and the first output shaft 111 and the second output shaft 112 pass through the center line of the motor support 11, the second output shaft 112 rotates relative to the motor support 11 and the first output shaft 111, and the motor support 11 is connected with the first reduction mechanism 14 and the second reduction mechanism 15.

[0061] Specifically, the first output shaft 111 is fixed on the motor support 11 through the first reduction mechanism 14, the first reduction mechanism 14 and the second reduction mechanism 15 are arranged on the motor support 11, the second output shaft 112 is arranged at two ends of the motor support 11 with the first output shaft 111, the first output shaft 111, the second reduction mechanism 15, the first reduction mechanism 14, the second output shaft 112 are sequentially installed on the motor support 11, the motor support 11 is provided with the mounting groove 113 corresponding to the first reduction mechanism 14, the first reduction mechanism 14 is installed in the mounting groove 113, the motor support 11 is provided with the through hole 114 in the center, the through hole 114 is communicated with the mounting groove 113, the second output shaft 112 is connected with the first reduction mechanism 14 from the through hole 114, the rotating bearing 115 is arranged in the through hole 114 and is sleeved on the second output shaft 112, so that the second output shaft 112 rotates relative to the motor support 11; in addition, the first output shaft 111, the second output shaft 112, the first reduction mechanism 14 and the second reduction mechanism 15 are installed along the center line of the motor support 11, and each rotating mechanism rotates around the center line of the motor support 11, so that the rotor mechanism 13, the stator mechanism 12, the first reduction mechanism 14, the second reduction mechanism 15 and the first output shaft 111 are coaxial.

[0062] As an embodiment, the motor stator mechanism 12 adopts a 24-slot outer rotor form, and the motor rotor mechanism 13 adopts a 28-pole permanent magnet structure form.

[0063] The connecting shell 16 includes a first outer end cover 161 and a second outer end cover 162, the first outer end cover 161 is connected with the second outer end cover 162 by buckling, the first outer end cover 161 is provided with a first opening 1611, and the first output shaft 111 extends outward from the first opening 1611.

[0064] Specifically, the first outer end cover 161 is buckled with the second outer end cover 162 to form a containing space, the first reduction mechanism 14, the second reduction mechanism 15, the motor support 11 and the second output shaft 112 are installed in the containing space, and the first output shaft 111 extends outward from the first opening 1611 of the first outer end cover 161.

[0065] As an embodiment, the first outer end cover 161 and the second outer end cover 162 are fixedly connected through fasteners.

[0066] As an embodiment, a first sealing member is arranged between the first outer end cover 161 and the second outer end cover 162, the first sealing member can make the connection between the first outer end cover 161 and the second outer end cover 162 more tight, so that the gap between the first outer end cover 161 and the second outer end cover 162 is filled by the first sealing member.

[0067] The outer rotor wheel hub motor 1 comprises a first bearing 1612 and a second bearing 1621, the first bearing 1612 is connected with the first outer end cover 161 and the first output shaft 111 respectively, and the second bearing 1621 is connected with the second outer end cover 162 and the second output shaft 112 respectively. Specifically, since the first output shaft 111 is a fixed component and does not participate in the rotation of the mechanism, the inner ring of the first bearing 1612 is connected with the first output shaft 111, and the outer ring is connected with the first outer end cover 161, so that the first output shaft 111 and the first outer end cover 161 rotate relative to each other. The second outer end cover 162 is fixed with the first outer end cover 161, and the rotation frequency of the two is the same, and the rotation frequency between the second outer end cover 162 and the second output shaft 112 is different. The second output shaft 112 needs to be provided with the second bearing 1621 between the second outer end cover 162 and the second output shaft 112, so that the second outer end cover 162 and the second output shaft 112 have a support, and the connection between the second outer end cover 162 and the second output shaft 112 is more stable.

[0068] Optionally, the first bearing 1612 is further provided with a second sealing member 1613, which is arranged at the first opening 1611 of the first outer end cover 161, so as to increase the airtightness between the first outer end cover 161 and the first output shaft 111.

[0069] The outer rotor wheel hub motor 1 comprises a brake 17, which is connected with the motor support 11 and the second output shaft 112 respectively. The brake 17 can stop the rotation of the rotor mechanism 13 and other rotating mechanisms in time.

[0070] Specifically, the brake 17 comprises a rotating member 171 and a fixed member 172, the rotating member 171 is connected with the second output shaft 112, the second output shaft 112 and the rotating member 171 are provided with clamping structures at corresponding positions, and the second output shaft 112 is clamped with the rotating member 171, the fixed member 172 is connected with the motor support 11, and the fixed member 172 is connected with the rotating member 171 through magnetic action after being powered off. It can be understood that the fixed member 172 of the brake 17 adsorbs the rotating member 171 after being powered off, so as to stop the rotation of the second output shaft 112, the rotor mechanism 13, the first speed reduction mechanism 14 and the second speed reduction mechanism 15, and the motor has the function of power-off brake.

[0071] The outer rotor wheel hub motor 1 comprises a control module 18 connected with the stator mechanism 12 and the brake 17 respectively. The control module 18 supplies power to the stator, and the stator generates a magnetic field after being powered on. The rotor rotates under the action of the magnetic field. The control module 18 also supplies power to the brake 17, and the motor can work normally after the brake 17 is powered off.

[0072] The control module 18 comprises a connecting line 181, the first output shaft 111 is hollow, the connecting line 181 extends outside from the hollow position of the first output shaft 111. It can be understood that the first output shaft 111 is hollow, the connecting line 181 supplies power to the stator mechanism 12 and the brake 17, which is transmitted from the first output shaft 111, and can be electrically connected with the installed mechanism. In addition, the control module 18 is installed close to the stator mechanism 12, and the motor support 11 is provided with a notch corresponding to the connecting line 181 to allow the connecting line 181 to pass through, thereby improving the utilization of space.

[0073] The first speed reduction mechanism 14 comprises a first sun gear 141, at least three first planetary gears 142, and a first inner ring gear 143, the first planetary gears 142 are respectively engaged with the first sun gear 141 and the first inner ring gear 143, the first sun gear 141 is installed at the center of the motor support 11, the first sun gear 141 is connected with the second output shaft 112, and the first inner ring gear 143 is fixedly connected with the motor support 11.

[0074] Specifically, the motor support 11 is provided with a mounting groove 113, the first inner ring gear 143 is fixed in the mounting groove 113 of the motor support 11, the outer wall of the first inner ring gear 143 is in contact with the inner wall of the mounting groove 113, the first inner ring gear 143 is relatively stationary with the motor support 11, the center line of the first sun gear 141 is on the central axis of the first inner ring gear 143, the first sun gear 141 is connected with the second output shaft 112, and the second output shaft 112 is relatively stationary with the first sun gear 141, the second output shaft 112 drives the first sun gear 141 to rotate, the first planetary gears 142 are arranged between the first sun gear 141 and the first inner ring gear 143, the first sun gear 141 drives the first planetary gears 142 to rotate, the first inner ring gear 143 is fixed and does not move, the first planetary gears 142 rotate around the first sun gear 141 along the circumference of the first inner ring gear 143, the first driving shaft 1421 is arranged on the first planetary gears 142, the first driving shaft 1421 is connected with the second speed reduction mechanism 15 to provide driving force for the second speed reduction mechanism 15, and the number of the first driving shaft 1421 corresponds to the number of the first planetary gears 142.

[0075] In this embodiment, three first planetary gears 142 are arranged, but the number of the first planetary gears 142 is not limited to three in this embodiment, and four, five or more can be arranged.

[0076] As an embodiment, a gasket ring is arranged at the bottom of the mounting groove 113, one end of the first planetary gear 142 is connected with the second speed reduction mechanism 15, and the other end contacts the gasket ring. When the first planetary gear 142 is running, the wear of the first planetary gear 142 on the bottom of the mounting groove 113 can be reduced. It can be understood that the end of the first planetary gear 142 close to the gasket ring is flush with the first driving shaft 1421, and the other end of the first planetary gear 142 protrudes from the first driving shaft 1421 to connect the second speed reduction mechanism 15.

[0077] As an embodiment, the first inner ring gear 143 can be fixedly connected with the mounting groove 113 by any one of magnetic attraction, adhesion, clamping and the like.

[0078] The second speed reduction mechanism 15 includes a second sun gear 151, at least three second planetary gears 152, a second inner ring gear 153, and a gear carrier 154. The second planetary gears 152 are respectively engaged with the second sun gear 151 and the second inner ring gear 153.

[0079] The second sun gear 151 is connected with the first planetary gear 142, the second planetary gears 152 are connected with the motor support 11, the second inner ring gear 153 is connected with the first outer end cover 161, and the gear carrier 154 is fixedly connected with the motor support 11.

[0080] The gear carrier 154 is buckled on the motor support 11, and the gear carrier 154 is provided with a gear groove 1543 matched with the outer shape of the second planetary gear 152. The second planetary gear 152 is installed in the gear groove 1543. Since the gear carrier 154 is buckled and installed, and the gear carrier 154 is fixed between the motor support 11 through fasteners, the gear groove 1543 is blocked by the motor support 11. The second planetary gear 152 rotates in the gear groove 1543. Each second planetary gear 152 is provided with a second drive shaft 1521 and a drive bearing 1522. The gear groove 1543 on the gear carrier 154 is provided with a fixing hole in the center. The second drive shaft 1521 is inserted into the fixing hole. The drive bearing 1522 is installed on the second drive shaft 1521. The second planetary gear 152 is connected with the second drive shaft 1521. The inner ring of the drive bearing 1522 is matched with the second drive shaft 1521, and the outer ring is matched with the second planetary gear 152. That is, the second drive shaft 1521 is inserted into the fixing hole. The inner ring of the drive bearing 1522 is sleeved on the second drive shaft 1521. The second planetary gear 152 is sleeved on the outer ring of the drive bearing 1522. The second sun gear 151 is connected with the first planetary gear 142. The first planetary gear 142 provides driving force for the second sun gear 151. The second sun gear 151 drives the second planetary gear 152 to rotate, so that the second inner gear ring 153 meshing with the second planetary gear 152 rotates. The second inner gear ring 153 rotates around the central axis of the second sun gear 151. The second inner gear ring 153 is connected with the first outer end cover 161. The rotation of the second inner gear ring 153 can drive the rotation of the first outer end cover 161.

[0081] The second sun gear 151 is provided with a connecting piece 1511. The connecting piece 1511 is provided with connecting holes. The number of the connecting holes corresponds to the number of the first drive shaft 1421. The outer shape of the connecting holes is matched with the outer shape of the first drive shaft 1421. After the connecting piece 1511 is installed with the first speed reduction mechanism 14, the first speed reduction mechanism 14 can drive the connecting piece 1511 to rotate. Since one end of the connecting piece 1511 is connected with the first speed reduction mechanism 14, and the other end is provided with the second sun gear 151, the driving force of the first planetary gear 142 of the first speed reduction mechanism 14 can be transmitted to the second sun gear 151 to drive the second speed reduction mechanism 15 to operate.

[0082] As an embodiment, the gear carrier 154 is fixedly connected with the second output shaft 112. The gear carrier 154 is provided with a fixing column 1541 and a fixing position 1542. The second output shaft 112 is provided with a connecting position corresponding to the fixing position 1542. The fixing position 1542 and the connecting position are both holes. The inner diameters of the two are matched with the outer diameter of the fixing column 1541. The fixing column 1541 is sequentially inserted from the fixing position 1542 and the connecting position, so that the connection between the gear carrier 154 and the second output shaft 112 is stable, and the two are relatively stationary.

[0083] The utility model discloses a mower for mowing, and the mower comprises the outer rotor wheel hub motor 1.

[0084] Specifically, the first output shaft 111 of the outer rotor wheel hub motor 1 is installed on the frame of the mower, the connecting shell 16 rotates relative to the first output shaft 111, the connecting shell 16 is connected with a rotating mechanism such as a blade, the connecting shell 16 provides driving force, two-stage reduction mechanisms are arranged inside, the reduction mechanisms have planetary gear reduction structures, the reduction ratio can be increased, the output torque is improved, and the cutting power is stronger.

[0085] It can be understood that the outer rotor wheel hub motor 1 is adopted, the connecting shell 16 is connected with the wheel hub of the mower, the first reduction mechanism 14 and the second reduction mechanism 15 of the outer rotor wheel hub motor 1 are used, the reduction ratio is increased, the output torque of the motor is increased, the efficiency of the motor is increased, different working conditions can be adapted to, and stronger driving force is obtained, so that the mower obtains stronger driving force, and the efficiency is higher when mowing operation is carried out.

[0086] Further, the brake 17 is arranged inside the outer rotor wheel hub motor 1, the brake 17 can stop rotating after being powered off, the connecting shell 16 and the rotating mechanism connected therewith can be stopped in time, and the use safety of the mower is improved.

[0087] In the above embodiment, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0088] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model.

[0089] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0090] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be the connection, also can be the detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through the intermediate medium, can be the communication of two elements or the interaction of two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0091] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0092] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0093] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model.Such, the modifications and variations of the utility model also belong to the scope of the claims of the utility model and its equivalent technologies, then the utility model also intends to include these modifications and variations.

[0094] The above is the specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model.Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. An external rotor hub motor, characterized in that, It includes a first output shaft, a stator mechanism, a rotor mechanism, a first reduction mechanism, a second reduction mechanism, and a connecting housing; The rotor mechanism is connected to the first reduction mechanism, the first reduction mechanism is connected to the second reduction mechanism, the second reduction mechanism is connected to the connecting shell, the first output shaft is connected to the second reduction mechanism, and the first output shaft is connected to the connecting shell. The stator mechanism, the rotor mechanism, the first reduction mechanism, and the second reduction mechanism are disposed within the connecting housing. The stator mechanism and the rotor mechanism rotate relative to each other. The first output shaft extends outward from the connecting housing, and the connecting housing rotates relative to the first output shaft.

2. The external rotor hub motor according to claim 1, characterized in that, It includes a motor bracket and a second output shaft, wherein the motor bracket and the second output shaft are installed inside the connecting housing; The first output shaft is connected to the second reduction mechanism, the second output shaft is connected to the motor bracket, and the second output shaft is connected to the rotor mechanism. The first output shaft and the second output shaft are on the same straight line, and the first output shaft and the second output shaft pass through the center line of the motor bracket. The second output shaft rotates relative to the motor bracket and the first output shaft, and the motor bracket is connected to the first reduction mechanism and the second reduction mechanism respectively.

3. The external rotor hub motor according to claim 1, characterized in that, The connecting shell includes a first outer end cover and a second outer end cover, which are fastened together. The first outer end cover is provided with a first opening, and the first output shaft extends outward from the first opening.

4. The external rotor hub motor according to claim 3, characterized in that, It includes a first bearing and a second bearing, wherein the first bearing is connected to the first outer end cover and the first output shaft respectively; The second bearing connects the second outer end cover and the second output shaft respectively.

5. The external rotor hub motor according to claim 1, characterized in that, It includes a brake, which is connected to the motor bracket and the second output shaft respectively.

6. The external rotor hub motor according to claim 5, characterized in that, The brake includes a rotating component and a fixed component. The rotating component is connected to the second output shaft, and the fixed component is connected to the motor bracket. When the fixed component is energized, it is magnetically connected to the rotating component through magnetic action.

7. The external rotor hub motor according to claim 1, characterized in that, The first reduction mechanism includes a first sun gear, at least three first planet gears, and a first internal gear ring, wherein the first planet gears respectively mesh with the first sun gear and the first internal gear ring; The first sun gear is mounted at the center of the motor bracket, the first sun gear is connected to the second output shaft, and the first internal gear ring is fixedly connected to the motor bracket.

8. The external rotor hub motor according to claim 1, characterized in that, The second reduction mechanism includes a second sun gear, at least three second planet gears, and a second internal gear ring, wherein the second planet gears respectively mesh with the second sun gear and the second internal gear ring; The second sun gear is connected to the first planetary gear, the second planetary gear is connected to the motor bracket, and the second internal gear ring is connected to the first outer end cap.

9. The external rotor hub motor according to claim 1, characterized in that, The system includes a control module, which is connected to both the stator mechanism and the brake. The control module includes a connecting line, and the first output shaft is hollow, with the connecting line extending outward from the hollow portion of the first output shaft.

10. A lawnmower, characterized in that, Includes the external rotor hub motor as described in any one of claims 1-9 above.

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