Motor structure of novel butt-joint braking mower

Abstract

The motor structure comprises a main shaft, a first wheel hub and a second wheel hub, the first wheel hub and the second wheel hub are arranged on the main shaft, the main shaft is sequentially sleeved with an iron core, a rotor shell, a center wheel, a support and a shaft sleeve, the two sides of the iron core are provided with an upper framework and a lower framework respectively, and the lower framework is provided with a Hall plate. An encoder base is arranged on the iron core, a PCB is arranged on the encoder base, a signal magnetic ring matched with the PCB is arranged on the rotor shell, magnetic steel is arranged between the iron core and the rotor shell, a gear ring is connected to the support through a supporting column, a nylon wheel is arranged in the gear ring, and the gear ring is meshed with the center wheel. According to the motor structure, the first hub and the second hub are fixed and prevented from falling off, the stability is good, the iron core can ensure that the temperature rise of the motor is not too high in the using process, the service life of the motor is ensured, the internal space of the motor is enlarged through the whole machine structure, the power density under the size of a motor cylinder is improved, and the torque output of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor structure of a novel docking-type brake lawn mower. Background Art

[0002] When assembling the hub motor and the end cover on the market, the end cover is generally put on the end of the motor, and then screw holes are set circumferentially on the side wall of the motor to fix the end cover to the side wall of the motor with screws. However, this method cannot position the end cover and the motor, the shaft hole on the end cover, the motor shaft and other components, and the assembly accuracy is poor. It is easy to cause wear of the components during use, affecting the service life of the hub motor, thereby reducing the service life and safety of the motor and increasing the cost of use. Summary of the Invention

[0003] The main technical problem solved by the present invention is to provide a new motor structure for a docking brake lawn mower. Eight mounting holes are respectively provided on the circumference of the first hub and the end face of the second hub. The first hub and the second hub are locked and fixed by 16 hexagon socket head screws passing through the first mounting holes and the second mounting holes. The motor can be fixed and prevented from falling off during operation, has good stability, and is safe to use. In addition, the iron core can ensure that the temperature rise of the motor will not be too high during use, thereby ensuring the service life of the motor.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a new motor structure of a docking brake lawn mower, including: a main shaft, a first hub and a second hub arranged on the main shaft, the first hub and the second hub are docked and connected to form a motor housing, the main shaft is sequentially sleeved with an iron core, a rotor shell, a center wheel, a bracket and a sleeve, an upper frame and a lower frame are respectively provided on both sides of the iron core, a Hall plate is provided on the lower frame, an encoder base is provided on the iron core, a PCB board is provided on the encoder base, a signal magnetic ring that works in conjunction with the PCB board is provided on the rotor shell, a magnetic steel is provided between the iron core and the rotor shell, and the bracket is provided with a magnetic steel. The support column is connected to a gear ring, a nylon wheel is provided inside the gear ring, and the gear ring is meshed with the center wheel. Eight groups of first wedge blocks are evenly distributed in the circumferential direction of the first hub, and a first mounting hole is opened on the first hub between each group of adjacent first wedge blocks. Eight second mounting holes are opened on the end surface of the first hub close to the second hub, and eight groups of second wedge blocks are evenly distributed in the circumferential direction of the second hub. A third mounting hole is opened on the second wedge block, and eight fourth mounting holes are opened on the end surface of the second hub close to the first hub. After assembly, the first wedge block is inserted between two groups of the second wedge blocks, and the second wedge block is inserted between two groups of the first wedge blocks.

[0005] Eight first mounting holes are provided, and eight second mounting holes are provided on the end surface of the second hub close to the first hub. The first hub and the second hub are locked and fixed by passing hexagon socket head screws through the first mounting holes and the second mounting holes.

[0006] In a preferred embodiment of the present invention, a first skeleton seal is provided between the shaft sleeve and the main shaft, and a second skeleton seal is provided between the second hub and the main shaft.

[0007] In a preferred embodiment of the present invention, the first skeleton seal and the second skeleton seal are made of environmentally friendly materials.

[0008] In a preferred embodiment of the present invention, the upper frame and the lower frame are respectively connected to two sides of the iron core by interference fit.

[0009] In a preferred embodiment of the present invention, the PCB and the central sensing area of ​​the signal magnetic ring are on the same horizontal axis.

[0010] In a preferred embodiment of the present invention, the first hub is disposed on the main shaft via a first bearing, and the second hub is disposed on the main shaft via a second bearing.

[0011] In a preferred embodiment of the present invention, a wire-avoiding groove is provided on the iron core.

[0012] In a preferred embodiment of the present invention, the encoder base is made of plastic.

[0013] In a preferred embodiment of the present invention, a flange plate is provided on the main shaft at the outer side of the second hub.

[0014] In a preferred embodiment of the present invention, a flat key is provided between the shaft sleeve and the main shaft, and the main shaft is a two-end shaft.

[0015] The beneficial effects of the present invention are: 1. Eight mounting holes are set on the circumference and end face of the first hub and the circumference and end face of the second hub respectively. The first hub and the second hub are locked and fixed by 16 hexagon socket head screws. They can be fixed and prevented from falling off during the operation of the motor, with good stability and safe use. 2. The iron core can ensure that the temperature rise of the motor will not be too high during use, so that the motor can reach the rated speed and ensure the service life of the motor; 3. The signal magnet is made of high temperature resistant material, which is anti-demagnetization and can increase the life of the motor. The first skeleton oil and the second skeleton oil seal are made of environmentally friendly materials, which can achieve waterproof and dustproof effects on the inside of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, among which: Figure 1 This is a schematic cross-sectional view of the motor structure of a novel docking brake lawn mower of the present invention; Figure 2 is a schematic diagram of the iron core of the present invention; Figure 3 This is a schematic diagram of the appearance of a motor structure of a novel docking brake lawn mower of the present invention; Figure 4 It is a bottom view of the motor structure of a novel docking brake lawn mower of the present invention; Figure 5 It is an exploded view of the first hub and the second hub in the present invention. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-5, an embodiment of the present invention: a motor structure of a novel docking brake lawn mower, comprising: a main shaft 1, a first hub 2 and a second hub 3 arranged on the main shaft, the first hub and the second hub being docked and connected to form a motor housing, the diameter of the motor housing being between 100-140 mm, wherein eight groups of first wedge blocks 201 are evenly distributed in the circumferential direction of the first hub, a first mounting hole 202 is opened on the first hub between each group of adjacent first wedge blocks, eight second mounting holes 203 are opened on the end surface of the first hub close to the second hub, eight groups of second wedge blocks 301 are evenly distributed in the circumferential direction of the second hub, the second wedge blocks are opened with a third mounting hole 302, and the end surface of the second hub close to the first hub There are eight fourth mounting holes 303. During assembly, the first wedge block is inserted between two groups of adjacent second wedge blocks, and the first hub and the second hub are first locked and fixed by using M3*8mm hexagon socket cylindrical head screws through the second mounting holes and the fourth mounting holes respectively. At the same time, the second wedge block is inserted between the two groups of first wedge blocks, and the first hub and the second hub are locked and fixed again by using M3*8mm hexagon socket cylindrical head screws through the first mounting holes and the third mounting holes respectively. The fixation is firm and can be fixed to prevent falling off during the operation of the motor. It has good stability and is safe to use. The material of the first hub and the second hub is steel to increase the strength. The above assembly method can free up the internal space of the motor while meeting the strength requirements, so that a specific speed can be achieved in conjunction with the selection of the iron core.

[0019] Specifically, an iron core 4, a rotor shell 5, a center wheel 6, a bracket 7 and a sleeve 8 are sequentially sleeved on the main shaft. The rotor shell is connected to the main shaft through two sets of bearings 21. The upper frame 8 and the lower frame 9 are connected on both sides of the iron core by interference fit. A Hall plate 10 is installed on the lower frame by screws. An encoder base 11 is provided on the iron core. A PCB board 12 is installed on the encoder base by hexagon socket round head screws. A signal magnetic ring 13 that works in conjunction with the PCB board is provided on the rotor shell. A magnet 14 is provided between the iron core and the rotor shell. The central sensing area of ​​the PCB board and the signal magnetic ring are on the same horizontal axis. The PCB board usually works together with the Hall plate, encoder and other necessary electronic components. The Hall plate can sense changes in the magnetic field and convert it into electrical signals, which are processed and amplified by the circuit on the PCB board, and finally output a signal representing the rotation position, which can realize the detection of speed information and play a role in timely stopping work and safety protection.

[0020] Specifically, a gear ring 15 is connected to the bracket through a support column, and the support column is provided with a bearing. A nylon wheel 16 is provided inside the gear ring to mesh with it. The gear ring is meshed with the center wheel, and the gears are meshed with each other to achieve a rated reduction ratio and a predetermined output speed.

[0021] Specifically, a first skeleton seal 17 is provided between the shaft sleeve and the main shaft, and a second skeleton seal 18 is provided between the second hub and the main shaft. The first skeleton seal and the second skeleton seal are made of environmentally friendly materials, which can achieve waterproof and dustproof effects on the inside of the motor housing and extend its service life.

[0022] Specifically, the first hub is set on the main shaft through the first bearing 19, and the second hub is set on the main shaft through the second bearing 20. The iron core is wound in a specific way to ensure that the temperature rise of the motor is not too high, so that the motor can reach the rated speed and ensure the life of the motor.

[0023] Specifically, a flat key 22 is provided between the shaft sleeve and the main shaft. The main shaft is a two-end shaft. A flange plate 23 is provided on the main shaft outside the second hub to facilitate the fixed installation of the main shaft and the external bracket.

[0024] The beneficial effects of the motor structure of the novel docking brake lawn mower of the present invention are: 1. Eight mounting holes are set on the circumference and end surface of the first hub and the circumference and end surface of the second hub respectively. The first hub and the second hub are locked and fixed by 16 hexagon socket head screws. They can be fixed and prevented from falling off during the operation of the motor, with good stability and safe use. 2. The special slot design of the iron core can ensure that the temperature rise of the motor will not be too high during use, so that the motor can reach the rated speed and ensure the service life of the motor; 3. The signal magnet is made of high temperature resistant material, which is anti-demagnetization and can increase the life of the motor. The first skeleton oil and the second skeleton oil seal are made of environmentally friendly materials, which can achieve waterproof and dustproof effects on the inside of the motor.

[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new motor structure for a docking brake lawn mower, characterized in that: include: A main shaft, a first hub and a second hub arranged on the main shaft, the first hub and the second hub are connected in a docking manner to form a motor housing, the main shaft is sequentially sleeved with an iron core, a rotor shell, a center wheel, a bracket and a sleeve, an upper frame and a lower frame are respectively provided on both sides of the iron core, a Hall plate is provided on the lower frame, an encoder base is provided on the iron core, a PCB board is provided on the encoder base, a signal magnetic ring that cooperates with the PCB board is provided on the rotor shell, a magnetic steel is provided between the iron core and the rotor shell, a gear ring is connected to the bracket through a support column, a nylon wheel is provided inside the gear ring, The ring gear is meshed with the center wheel, and eight groups of first wedge blocks are evenly distributed in the circumferential direction of the first hub. A first mounting hole is opened on the first hub between each group of adjacent first wedge blocks, and eight second mounting holes are opened on the end surface of the first hub close to the second hub. Eight groups of second wedge blocks are evenly distributed in the circumferential direction of the second hub, and a third mounting hole is opened on the second wedge block. Eight fourth mounting holes are opened on the end surface of the second hub close to the first hub. After assembly, the first wedge block is inserted between two groups of the second wedge blocks, and the second wedge block is inserted between two groups of the first wedge blocks.

2. The motor structure of a new docking brake lawn mower according to claim 1 is characterized in that: A first skeleton seal is provided between the shaft sleeve and the main shaft, and a second skeleton seal is provided between the second hub and the main shaft.

3. The motor structure of the new docking brake lawn mower according to claim 2 is characterized in that: The first skeleton seal and the second skeleton seal are made of environmentally friendly materials.

4. The motor structure of the new docking brake lawn mower according to claim 1 is characterized in that: The upper frame and the lower frame are respectively connected to two sides of the iron core by interference fit.

5. The motor structure of the new docking brake lawn mower according to claim 1 is characterized in that: The PCB and the central induction area of ​​the signal magnetic ring are on the same horizontal axis.

6. The motor structure of a new docking brake lawn mower according to claim 1 is characterized in that: The first hub is arranged on the main shaft through a first bearing, and the second hub is arranged on the main shaft through a second bearing.

7. The motor structure of a new docking brake lawn mower according to claim 1 is characterized in that: A wire avoidance groove is provided on the iron core.

8. The motor structure of a new docking brake lawn mower according to claim 1 is characterized in that: The encoder base is made of plastic.

9. The motor structure of a new docking brake lawn mower according to claim 1 is characterized in that: A flange plate is provided on the main shaft at the outer side of the second hub.

10. The motor structure of a new docking brake lawn mower according to claim 1, characterized in that: A flat key is provided between the shaft sleeve and the main shaft, and the main shaft is a two-end shaft.

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