CN211266631U

CN211266631U - DC brushless motor for electric branch scissors

Info

Publication number: CN211266631U
Application number: CN202020142096.6U
Authority: CN
Inventors: 胡景威
Original assignee: Shenzhen Isteady Electronics Co ltd
Current assignee: Shenzhen Isteady Electronics Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-08-14
Anticipated expiration: 2030-01-21

Abstract

The utility model discloses an electric tree pruning DC brushless motor, which comprises a motor rotor component, wherein the motor rotor component comprises a shaft, a plurality of rotor chips which are mutually overlapped at the same angle are sleeved on the shaft, and the periphery of the outer surface of each rotor chip is clamped with a sheet magnet; the motor rotor assembly is sleeved with the stator assembly, the stator assembly is sleeved with the shell, the shell comprises a shell body and an end cover, and the shell body and the end cover are integrally formed. The utility model discloses a shell body and end cover integrated into one piece of direct current brushless motor structure unites multiunit part as one, and technology is simpler, has improved work efficiency equally, has reduced manufacturing cost and production cycle.

Description

DC brushless motor for electric branch scissors

Technical Field

The utility model relates to a motor field, concretely relates to brushless DC motor of electronic pruning shear.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, and the motor is used in various automatic mechanical equipment, and a direct-current brushless motor is used in the electric tree pruner.

The manufacturing process of the direct current brushless motor of the existing electric tree pruner is mature, but the manufacturing process still has some defects, for example, the defects of complexity, high processing technical requirement, high energy consumption and low material utilization rate exist when the shell and the rear end cover of the brushless motor in the existing electric tree pruner industry are manufactured separately.

Meanwhile, magnets in the rotor assembly of the electric branch shear motor in the prior art are of a traditional arc structure, and the defects of low efficiency, high processing cost, long processing period and the like exist in the processing of the arc structure.

Therefore, there is a need for further improvements to the existing dc brushless motor structure in the electric tree pruning industry.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a make simply, the energy consumption is little, the high direct current brushless motor of electronic pruning shear of material utilization rate.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a DC brushless motor is cut to electronic branch, includes motor rotor subassembly, motor rotor subassembly includes the axle, epaxial cover has the mutual superimposed rotor chip of multi-disc with the angle, the slice magnet is established to the card all around of rotor chip surface, the shape of slice magnet is: rectangular, square, parallelogram, trapezoidal or triangular; the motor rotor assembly is sleeved with the stator assembly, the stator assembly is sleeved with the shell, the shell comprises a shell body and an end cover, and the shell body and the end cover are integrally formed.

Preferably, the shell body and the end cover are made of metal through stamping and are integrally formed.

Preferably, the end cover is provided with heat dissipation holes.

Preferably, the center of the rotor chip is provided with a shaft hole, the outer edge of the rotor chip is a regular N-polygon, and N is greater than or equal to 4; the connecting angles of any two adjacent edges of the outer edge of the regular N-shaped edge are provided with bulges used for installing the sheet-shaped magnets, the bulges comprise first bulges and second bulges, the size of the first bulges is larger than that of the second bulges, and the first bulges and the second bulges are sequentially and alternately arranged along the connecting angles of the outer edge of the regular N-shaped edge.

Preferably, the sheet-shaped magnet is provided with a rectangular, square, parallelogram, trapezoid or triangular cross section, and is clamped between any two adjacent protrusions.

Preferably, the protrusion is a trapezoidal protrusion (not limited to this shape), and a short side of the trapezoidal protrusion is connected to the connection corner.

Preferably, the machine shell is made of various metal materials such as electrolytic material SECD, single light plate, SPCC or SPCD.

The utility model discloses profitable technological effect: the shell body and the end cover of the direct current brushless motor structure are integrally formed, multiple groups of parts are combined into a whole, the process is simpler, the working efficiency is improved, and the production cost and the production period are reduced; simultaneously the utility model discloses a slice magnet among motor rotor mechanism adopts the cross-section to improve for the cooperation that corresponds rotor chip for rectangle (square, parallelogram, trapezoidal, triangle-shaped etc.) shape structure, and the structure is simpler, wholly has improved work efficiency, has reduced manufacturing cost and production cycle, can realize the standardization of industry.

Drawings

Fig. 1 is a schematic structural diagram of a casing in the electric tree pruning dc brushless motor of the present invention.

Fig. 2 is a side view of the casing of the electric tree pruning dc brushless motor of the present invention.

Fig. 3 is the overall structure schematic diagram of the motor rotor assembly of the electric tree pruning dc brushless motor of the present invention.

Fig. 4 is a front view of the motor rotor assembly of the electric tree pruning dc brushless motor of the present invention.

Fig. 5 is a cross-sectional view taken along the plane a-a in fig. 4.

Fig. 6 is a schematic view of the structure of the sheet magnet according to the present invention.

Fig. 7 is a schematic structural diagram of a rotor chip according to the present invention.

The names of the components in the figure correspond to the reference numbers:

the rotor comprises a shaft-1, a magnetic sleeve-2, a sheet magnet-3, a rotor chip-4, a shaft hole-41, a connecting angle-42, a first bulge-43, a second bulge-44, a shaft sleeve-5, a ball bearing-6, a machine shell-7, a shell body-71, an end cover-72 and a heat dissipation hole-73.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.

As shown in fig. 1-2, an electric dc brushless motor for pruning shears is provided, wherein a stator assembly (of conventional design, not shown) is sleeved outside a rotor assembly of the motor, a casing 7 is sleeved outside the stator assembly, the casing comprises a casing body 71 and an end cover 72, and the casing body 71 and the end cover 72 are integrally formed. Specifically, the shell 7 is made of an electrolytic material SECD single light plate or an SPCC SPCD metal material, and the shell 7 is made of hardware through stamping. The integrated design improves the material utilization rate and the work efficiency, reduces the cost, shortens the period, saves the resources, embodies the environmental protection, is convenient to operate and is easier to realize the mechanization and the automation.

Specifically, the end cover 72 is provided with the heat dissipation holes 73, so that a good heat dissipation effect is achieved, and the service life of the motor is effectively prolonged.

As shown in fig. 3-7, the motor rotor assembly includes a shaft 1, a plurality of rotor chips 4 stacked at the same angle are sleeved on the shaft 1, the sheet-shaped magnets 3 are clamped around the outer surface of the rotor chip 4, the plurality of rotor chips 4 are stacked at the same angle and in the same state to form a column, the sheet-shaped magnets 3 are vertically clamped around the column-shaped rotor chip, that is, the sheet-shaped magnets 3 are arranged in the direction parallel to the shaft, wherein:

the center of the rotor chip 4 is provided with a shaft hole 41, and the rotor chip 4 is sleeved on the shaft 1 through the shaft hole 41. The outer edge of the rotor chip is a regular N-edge, and N is more than or equal to 4; the connecting angle 42 of any two adjacent edges of the outer edge of the regular N-edge is provided with protrusions for mounting the sheet-shaped magnets, the number of the sheet-shaped magnets is 4-200, in the embodiment, N is 8, and the number of the sheet-shaped magnets is 8. The protrusions comprise first protrusions 43 and second protrusions 44, the size 43 of the first protrusions is larger than that of the second protrusions 44, and the first protrusions 43 and the second protrusions 44 are alternately arranged in sequence along the connecting angle 42 of the outer edge of the regular N-polygon, namely the first protrusions 43-the second protrusions 44-the first protrusions 43-the second protrusions 44 … … or 44-the first protrusions 43-the second protrusions 44-the first protrusions 43 … … are alternately arranged in sequence.

Specifically, the sheet-shaped magnet 3 is configured as a square-shaped structure with a rectangular cross section, and the size of the square-shaped structure covers all formable size combinations and all possible fixing modes of the sheet-shaped magnet 3 on the outer surface of the rotor;

the flaky magnet 3 is clamped between any two adjacent protrusions, the flaky magnet 3 is of a square structure, the production process is simpler, the efficiency is higher, the cost is lower, and the quality of the motor cannot be influenced.

Specifically, the protrusion is a trapezoidal protrusion, the short sides of the trapezoidal protrusion are connected to the connecting angle 42, and all corresponding fixing modes of the sheet-shaped magnet are included. The trapezoidal protrusions are adopted, and the sizes of the first protrusion 43 and the second protrusion 44 are different, so that the sheet-shaped magnet 3 is more convenient to mount, and the mounting stability is ensured.

The magnetic sleeve 2 is sleeved outside the sheet magnet 3, and the shaft 1 is further sleeved with a shaft sleeve 5 and a ball bearing 6. Wherein, the magnetic sleeve 2, the shaft sleeve 5 and the ball bearing 6 are all used for fixing.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims

1. The utility model provides a DC brushless motor is cut to electronic branch, its characterized in that, includes rotor chip and casing, the slice magnet is established to the card all around of rotor chip surface, the shape of slice magnet is: rectangular, square, parallelogram, trapezoidal or triangular; the casing comprises a casing body and an end cover, wherein the casing body and the end cover are integrally formed.

2. The brushless direct current motor for the electric branch shears according to claim 1, wherein the shell body and the end cover are integrally formed by hardware stamping.

3. The brushless dc motor for an electric tree pruner of claim 2, wherein said end cap is provided with heat dissipation holes.

4. The brushless DC motor according to claim 3, further comprising a motor rotor assembly, wherein the motor rotor assembly comprises a shaft, and a plurality of rotor chips stacked at the same angle are sleeved on the shaft; the stator assembly is sleeved outside the motor rotor assembly, and the shell is sleeved outside the stator assembly.

5. The electric DC brushless dendritic shear motor as claimed in claim 4, wherein said sheet magnet is configured with a cross section of: rectangular, square, parallelogram, trapezoidal or triangular.

6. The brushless electric motor as claimed in claim 1, wherein the outer edge of the rotor chip is a regular N-polygon, N is 4 or more; the connection angles of any two adjacent edges of the outer edge of the regular N-shaped edge are provided with bulges used for installing the sheet-shaped magnets, the bulges comprise first bulges and second bulges, the sheet-shaped magnets are clamped between the first bulges and the second bulges, and the first bulges and the second bulges are sequentially and alternately arranged along the connection angles of the outer edge of the regular N-shaped edge.

7. The brushless dc motor as claimed in claim 6, wherein the protrusions are trapezoidal protrusions, and the short sides of the trapezoidal protrusions are connected to the connecting corners.

8. The brushless dc motor as claimed in claim 1, wherein the housing is made of SECD, SPCC, SPCD or SECD.