TWM611621U - Internal rotary electric lawn mower - Google Patents

Abstract

An inner-rotating electric lawn mower includes a control mechanism with a rod for gripping; a motor with a shell and a rotating shaft, a rotor and a stator installed inside the shell. The rotating shaft is along a The central axis is installed in the center of the shell, the rotor is sleeved on the outside of the rotating shaft, and is driven to rotate by the rotating shaft, and the stator is arranged on the outside of the rotor at intervals; It is installed at the bottom of the motor, and is arranged on the axis of the rotor by the shaft connection part, and is driven by the motor to rotate; an electric control mechanism with a motor controller, a switch group and a power group, the power group is used to supply the mowing The motor controller is installed on the top of the rod body, and the switch group is installed on the rod body and connected with the motor controller.

Description

Internal rotary electric lawn mower

This creation is about a lawn mower, especially a high-speed internal-rotating electric lawn mower that can reduce mechanical loss.

At present, the commonly used lawn mowers and gardening machines in the market use fuel as the power source for supplying the lawn mower engine to drive the engine to run and drive the cutting work piece linked with the engine to facilitate cutting.

However, when using traditional fuel-burning lawnmowers, operators have to carry heavy gasoline and diesel in addition to the weight of the lawnmower. Moreover, they must be refilled at any time after the fuel is consumed, which is quite effective in use. It is troublesome and inconvenient, and the exhaust gas produced by the fuel will also cause serious environmental pollution, and it is also quite harmful to the health of the operator.

Therefore, an industry has developed an electric lawn mower driven by a carbon brush motor. The electric lawn mower is powered by a commercial power or battery to operate the carbon brush motor to drive the cutting workpiece to achieve the purpose of cutting. Although the existing electric lawn mower can solve the environmental protection problem caused by fuel, the carbon brush motor uses the carbon brush to change the polarity of the current to cause the motor to run, so the carbon brush cannot flow large current, which is also the DC carbon brush motor The output power is small, and it needs to be matched with a reduction gear to increase its torque, so the life is short and the efficiency is low.

In addition, the motors of the existing electric lawn mowers are all an outer-rotating motor structure, and the outer-rotating motor is certainly achieved by rotating the rotor located on the outer ring of the motor to further drive the cutting workpiece. Since the rotor is installed on the outer ring (or shell) of the motor, it rotates outside In the structural design between the sub and the cutting workpiece, the position arrangement is limited. This is also one of the reasons why the power of the out-rotating motor cannot be increased. Moreover, the output of the out-rotating electric lawn mower is limited, so When the workpiece is cut using a blade, the resistance will be greater. If the workpiece is a cutting rope, usually only a length of less than 20 cm can be used, otherwise the driving efficiency will be weaker, which will reduce the cutting force and use of the lawn mower. effect.

The inner-rotating electric lawn mower of this creation has a motor with a large output and a high speed, and the motor and the turntable are easily assembled, and the volume can also be set to be smaller.

Therefore, an internal-rotating electric lawn mower proposed by this creation includes: a control mechanism with a rod for gripping; a motor with a housing and a rotating shaft and a shaft mounted inside the housing. A rotor and a stator, the rotating shaft is installed in the center of the housing along a central axis, the rotor is sleeved on the outside of the rotating shaft, and can be driven to rotate by the rotating shaft, and the stator is circumferentially arranged on the outside of the rotor at intervals ; A turntable with a centrally located shaft joint part, the turntable is installed at the bottom of the motor, the shaft joint part and the rotor are used for shafting, and is driven by the motor to rotate; and an electric control mechanism with A motor controller, a switch group and a power group, the power group is to supply the power required by the lawn mower, the motor controller is installed on the top of the pole, the switch group is installed on the pole Body and connected with the motor controller.

According to the above-mentioned internal-rotating electric lawn mower, the rotor is a magnet group and the stator is a coil group.

According to the above-mentioned invention, the inner-rotating electric lawn mower further includes at least one cutting element. The cutting element is installed on the turntable and is driven by the turntable to generate movement to facilitate cutting operations.

According to the internal-rotating electric lawn mower of the above invention, the cutting element is a tendon rope.

According to the above-mentioned inner-rotating electric lawn mower, there are two cutting elements, which are installed on both sides of the disc body at an angle of 180 degrees.

According to the above-mentioned inner-rotating electric lawn mower, the control mechanism further includes a handle and a handle. The handle is mounted on the top section of the rod body, and the handle is provided on the rod body. On the middle section.

According to the inner-rotating electric lawn mower according to the present invention, the control mechanism further includes a baffle, and the baffle is installed on the bottom section of the rod body and is close to the turntable.

According to the above-mentioned inner-rotating electric lawn mower, the switch group of the electric control mechanism has a box body, a power switch showing the outside of the box body, and an operation switch extending outward from the box body , The power switch and the operation switch are electrically connected to the motor controller.

According to the inner-rotating electric lawn mower of the above invention, the housing of the motor has a socket part extending outward from the shell body, and the socket part is installed at the bottom end of the rod body of the control mechanism.

According to the above-mentioned internal-rotating electric lawn mower, the motor is a brushless motor.

In summary, the inner-rotating electric lawn mower in this creation uses the inner-rotating motor to drive the turntable to drive the cutting element to rotate, and with the execution of the control circuit, the motor has a greater output and a faster speed. As for the mechanical structure, the rotating shaft can be directly connected to the spindle of the turntable by directly extending downwards. The assembly is easier, and the volume can be set to be smaller to reduce the volume of the motor and the turntable.

10: Operating mechanism

11: Rod body

12: Grip

13: handle

14: bezel

15: Locking parts

20: Motor

21: Shell

22: shaft

23: Rotor

24: stator

25: Socket

26: Locking parts

27: Drive

30: turntable

31: Shaft joint

32: Piercing holes

321: front end

322: end

323: Hole Outer Wall

33: bottom

34: Middle section

40: Electronic control mechanism

41: Motor controller

42: switch group

421: Box

422: Power switch

423: Operation switch

43: power pack

50: cutting element

51: rope body

52: Positioning Department

[Figure 1] is a three-dimensional view of a preferred embodiment of the inner-rotating electric lawn mower of the present invention.

[Figure 2] is a combined side view of the motor and the turntable.

[Figure 3] is an enlarged view showing that the motor controller and the switch are assembled on the rod body.

[Figure 4] is a schematic side view of the motor controller.

[Figure 5] is the bottom view of the turntable.

As shown in [Fig. 1], a preferred embodiment of the inner-rotating electric lawn mower of the present invention includes a control mechanism 10, a motor 20, a turntable 30, an electric control mechanism 40, and at least one cutting element 50.

The control mechanism 10 has a rod body 11 for gripping, a handle 12, a handle 13, and a baffle 14. The handle 12 is installed on the top section of the rod body 11, and the handle 13 is installed on the middle section of the rod body 11. The baffle 14 is installed at the bottom section of the rod body 11 and is close to the turntable 30 to block foreign objects such as grass that are cut off, and prevent the foreign objects ejected at high speed from directly injuring the operator. The handle 13 and the baffle 14 are respectively locked on the rod 11 by a plurality of locking members 15. In this embodiment, the handle 13 is rectangular, which is convenient to handle and can accurately control the operating direction, and the overall structure has good rigidity.

Continuing to refer to FIG. 2, the motor 20 has a housing 21 and a rotating shaft 22, a rotor 23 and a stator 24 installed in the housing 21. The housing 21 of the motor 20 has a socket part 25 extending outward from the shell body. The socket part 25 is installed on the bottom end of the rod 11 of the control mechanism 10 in cooperation with a plurality of locking parts 26, so that the motor 20 It is stably arranged at the bottom end of the rod body 11. The rotating shaft 22 of the motor 20 is installed in the center of the housing 21 along a central axis L. The rotor 23 is sleeved on the outside of the rotating shaft 21 and can be driven to rotate by the rotating shaft 22. The stator 24 is ringed at intervals. Located outside the rotor 23, the rotor 23 is a magnet group, and the stator 24 is a coil group. In this embodiment, the motor 20 is a permanent magnet brushless motor. Because the air gap of the internal rotation motor is small and the rotor is sealed, it is waterproof and dustproof.

The turntable 30 has a shaft connecting portion 31 in the center, and the turntable 30 is installed on The bottom of the motor 20 is axially arranged with the rotor 23 by the shaft connecting portion 31 and is driven by the rotating shaft 22 of the motor 20 to rotate. As shown in [Figure 2] and [Figure 5], in this embodiment, the turntable 30 is an I-shaped hollow shell in a side view, and has a plurality of corresponding through holes 32, each of which The front end 321 of the placement hole 32 extends upward from the middle of a bottom 33 of the turntable 30, and the end 322 is located at a middle section 34 of the turntable 30.

Continuing to refer to [FIG. 3] and [FIG. 4 ], the electric control mechanism 40 has a motor controller 41, a switch group 42 and a power group 43. The power pack 43 is used to supply the power required by the lawn mower. The motor controller 41 is installed on the top of the rod 11 and located on the rear side of the handle 12. The switch group 42 is installed on the The rod 11 is connected to the motor controller 41. The switch assembly 42 of the electric control mechanism 40 has a box body 421, a power switch 422 exposed outside the box body 421, and an operation switch 423 extending outward from the box body 421. The power switch 422 and the operation The switches 423 are electrically connected to the motor controller 41. In this embodiment, the outer shell of the motor controller 41 is circular, and a control circuit 411 is provided inside. The control circuit 411 controls the operation mode required by the lawn mower, and the control circuit 411 is electrically connected to the A driver 27 of the motor 20 drives the motor 20 to operate.

Continuing to refer to [FIG. 2] and [FIG. 5 ], the cutting element 50 has a rope body 51 and a positioning portion 52 riveted in the rope body 51. In this embodiment, the rope body 51 of the cutting element 50 is a tendon rope. When assembling, the rope body 51 is inserted into the insertion hole 32 from the bottom of the turntable 30, and the end 322 of the insertion hole 32 is extended outwards, and then the positioning portion 52 of the cutting element 50 The card is set at the front end 321 of the through hole 32. In operation, when the turntable 30 rotates in accordance with the direction of rotation, the positioning portion 52 of the cutting element 50 is clamped on the outer wall 323 of the front end 321 of the through hole 32 due to the inertial rotation. In [Figure 1], [Figure 2] and [Figure 5], two cutting elements 50 are installed on both sides of the turntable 30 at an angle of 180 degrees. In practical use, it can also be installed on the turntable 30. There are more than two cutting elements 50, for example, three or four cutting elements 50.

As mentioned above, the inner-rotating electric lawn mower of this creation uses an inner-rotating motor 20 drives the turntable 30 to drive the cutting element 50 to rotate, and cooperates with the execution of the control circuit 411. The shaft 22 of the motor 20 directly drives the rotor 23 located in the middle of the housing 21 to run. In terms of the structure, the rotating shaft 22 can be directly extended downward to be connected to the spindle of the turntable 30. The assembly design is simpler, and the volume can be set to be smaller to reduce the volume of the motor and the turntable. In the existing lawn mower driven by an outward-rotating motor, it is necessary to avoid the problem of serious mechanical loss caused by the large inertia of the external-rotating rotor. In addition, since the internal rotation motor 20 of the present invention has the advantages of high-speed operation, large output, and waterproof and dustproof, the setting of the rope body 51 of the cutting element 50 can be extended to more than 20 cm (for example, more than 23 cm). ), in this way, the longer the rope body 51, the cutting efficiency can be improved, and the mowing operation can be faster.

The above is only a preferred embodiment of this creation, and should not be used to limit the scope of implementation of this creation, that is, all simple equivalent changes and modifications made according to the scope of patent application and new description of this creation are all Should still be within the scope of this creation patent.

10: Operating mechanism

11: Rod body

12: Grip

13: handle

14: bezel

15: Locking parts

20: Motor

21: Shell

25: Socket

26: Locking parts

30: turntable

40: Electronic control mechanism

41: Motor controller

42: switch group

43: power pack

50: cutting element

Claims (10)

An internal-rotating electric lawn mower, which comprises: a control mechanism with a rod for gripping; a motor with a housing and a rotating shaft, a rotor and a stator installed inside the housing. The rotating shaft Installed in the center of the housing along a central axis, the rotor is sleeved on the outside of the rotating shaft, and can be driven to rotate by the rotating shaft, the stator is arranged on the outside of the rotor at intervals; a turntable having a The central shaft connection part, the turntable is installed at the bottom of the motor, and the shaft connection part is used to axially set the rotor and driven by the motor to rotate; and an electric control mechanism with a motor controller and a switch Group and a power group, the power group is to supply the power required by the lawn mower, the motor controller is installed on the top of the pole, the switch group is installed on the pole, and the motor Controller connection. The internal-rotating electric lawn mower according to claim 1, wherein the rotor is a magnet group, and the stator is a coil group. The internal-rotating electric lawn mower according to claim 1, further comprising at least one cutting element, the cutting element is installed on the turntable, and is driven by the turntable to generate movement to facilitate cutting operations. The inner-rotating electric lawn mower according to claim 3, wherein the cutting element is a tendon rope. The inner-rotating electric lawn mower according to claim 3, wherein the cutting element has two cutting elements, which are installed on both sides of the disc body at an angle of 180 degrees. The internal rotary electric lawn mower according to claim 1, wherein the control mechanism further includes a handle and a handle, the handle is installed on the top section of the rod body, and the handle is provided on the rod On the middle section of the body. The internal-rotating electric lawn mower according to claim 1, wherein the control mechanism further includes a baffle, and the baffle is installed on the bottom section of the rod body and is close to the turntable. The inner-rotating electric lawn mower according to claim 1, wherein the switch group of the electric control mechanism has a box body, a power switch exposing the outside of the box body, and a power switch extending outward from the box body. An operation switch, the power switch and the operation switch are electrically connected to the motor controller. The inner-rotating electric lawn mower according to claim 1, wherein the housing of the motor has a socket part extending outward from the shell body, and the socket part is installed at the bottom end of the rod body of the control mechanism . The internal-rotating electric lawn mower according to claim 1, wherein the motor is a brushless motor.

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