External rotor motor

Abstract

The utility model relates to an external rotor motor, which comprises a base, a motor shell and a clamping mechanism, one end of a motor shell is connected with the base, a motor coil and a motor shaft are arranged in the motor shell, and the motor shell rotates around the motor coil and the motor shaft during working; and the clamping mechanism is fixedly arranged at the other end of the motor shell and is used for clamping a cutter. According to the utility model, the length of the motor shaft of the external rotor motor can be reduced by changing the connection or clamping mode with the rotated component. Due to the fact that the size of the outer rotor motor is reduced, the overall size of the cutting equipment can be reduced under the condition that power is not affected, and the efficiency of power provided by the motor is higher due to the connection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machines, in particular to an outer rotor motor used on a cutting machine. Background Art

[0002] The outer rotor motor has a simple structure, small axial size and high specific power. It can control torque within a wide speed range and has a fast response speed. Moreover, because there is no reducer, the efficiency is relatively high. The outer rotor motor of the present application can be mainly used as a power device such as the one disclosed in CN220372448U and named as a blade cutter power head. In order to reduce the overall size, reducing the length of the outer rotor motor has become an urgent problem to be solved. The existing outer rotor motor generally has a longer motor shaft. If it is used in the blade cutter power head, the overall size of the equipment will be larger. Therefore, how to improve the outer rotor motor and reduce the length of the outer rotor motor, thereby achieving the purpose of reducing the size of the blade cutter power head. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the present invention provides an outer rotor motor, which aims to solve the problem of how to reduce the length of the outer rotor motor in the existing technology, thereby achieving the purpose of reducing the size of the blade cutting machine power head.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An outer rotor motor, comprising:

[0006] base;

[0007] A motor housing, one end of which is connected to the base, wherein a motor coil and a motor shaft are arranged in the motor housing, and when in operation, the motor housing rotates around the motor coil and the motor shaft;

[0008] A clamping mechanism is fixedly arranged at the other end of the motor housing, and is used for clamping a tool.

[0009] Furthermore, it also includes:

[0010] A mounting gasket is located between the motor housing and the clamping mechanism.

[0011] Furthermore, the clamping mechanism includes a left clamping block and a right clamping block, the left clamping block is a semicircular block, and the right clamping block is a round block with an L-shaped step. The left clamping block and the right clamping block are combined to form a cylinder with a hole in the middle.

[0012] Furthermore, a first type of mounting hole and a second type of mounting hole are provided at the other end of the motor housing. There are two first type of mounting holes and two second type of mounting holes respectively, which are arranged opposite to each other at intervals.

[0013] Furthermore, the right clamping block and the mounting gasket are connected to the first type of mounting holes through screws, and the left clamping block and the right clamping block are connected to the second type of mounting holes through screws or bolts.

[0014] Furthermore, connection holes are respectively provided on both side surfaces of the left clamping block and the right clamping block.

[0015] Furthermore, a plurality of circular holes for heat dissipation are provided on the base.

[0016] Furthermore, heat dissipation slots or heat dissipation holes are provided on the motor housing.

[0017] Furthermore, the side surface of the other end of the motor housing is arranged to be inclined.

[0018] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0019] This utility model discloses an outer rotor motor that can reduce the length of its motor shaft by changing the connection or clamping method with the rotating component. This reduced size of the outer rotor motor can also reduce the overall size of the cutting equipment without compromising power. Furthermore, the connection method of this utility model improves the power efficiency provided by the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a side view of an outer rotor motor according to an embodiment of the present invention.

[0021] Figure 2 This is a top view of an outer rotor motor according to an embodiment of the present invention.

[0022] Figure 3 This is a side view of a clamping structure provided on the upper part of an outer rotor motor according to an embodiment of the present utility model.

[0023] Figure 4 This is a top view schematic diagram of a clamping structure provided on the upper part of an outer rotor motor according to an embodiment of the present utility model.

[0024] Figure 5 Schematic diagram of the base of an outer rotor motor according to an embodiment of the present utility model.

[0025] Among them, the names of the drawings corresponding to the drawings in the specification are:

[0026] 1-base, 2-motor housing, 3-motor shaft, 4-clamping mechanism, 5-mounting gasket, 6-left clamping block, 7-right clamping block, 8-first type mounting hole, 9-second type mounting hole, 10-connecting hole, 11-circular hole, 12-heat dissipation hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0028] See also Figures 1 to 5 As shown, an outer rotor motor in this embodiment includes a base 1, a motor housing 2 and a clamping mechanism 4; one end of the motor housing 2 is connected to the base 1, and a motor coil and a motor shaft 3 are arranged in the motor housing 2. When working, the motor housing 2 rotates around the motor coil and the motor shaft 3; the clamping mechanism 4 is fixedly arranged at the other end of the motor housing 2, and the clamping mechanism 4 is used to clamp the tool. The solution of this embodiment is to directly open a mounting hole on the other end of the motor housing 2, and fix the clamping mechanism 4 on the other end of the motor housing 2. The motor shaft 3 does not pass through one end of the motor housing 2 and the base 1, which can effectively shorten the length of the motor shaft 3. When this outer rotor motor is applied to a power head of a blade cutting machine with publication number CN220372448U, the overall size can be effectively reduced.

[0029] like Figure 4 As shown, the present invention may further include a mounting gasket 5, which is located between the motor housing 2 and the clamping mechanism 4. By providing the mounting gasket 5, the problem of the motor and the rotated component not being coaxial or the connection deviation can be tolerated to a certain extent.

[0030] The clamping mechanism 4 may include a left clamping block 6 and a right clamping block 7, wherein the left clamping block 6 is a semicircular block and the right clamping block 7 is a round block with an L-shaped step. The left clamping block 6 and the right clamping block 7 are combined together to form a cylinder with a hole in the middle.

[0031] To facilitate installation of the clamping mechanism 4, the motor housing 2 is provided with a first-type mounting hole 8 and a second-type mounting hole 9 at the other end. There are two first-type mounting holes 8 and two second-type mounting holes 9, spaced opposite each other. The right clamping block 7 and mounting gasket 5 are connected to the first-type mounting holes 8 via screws, while the left and right clamping blocks 6 and 7 are connected to the second-type mounting holes 9 via screws or bolts.

[0032] Connecting holes 10 are respectively provided on both sides of the left clamping block 6 and the right clamping block 7. The left clamping block 6 and the right clamping block 7 are fixed in the connecting holes 10 by screws or bolts, and the rotating parts in the space holes of the left clamping block 6 and the right clamping block 7 are clamped.

[0033] like Figure 5 As shown, a plurality of circular holes 11 for heat dissipation are provided on the base 1. By providing more of the small circular holes 11 for heat dissipation, the heat dissipation effect of the external motor is improved.

[0034] For example Figure 1 As shown, the motor housing 2 is provided with heat dissipation slots or heat dissipation holes 12 .

[0035] The other side of the motor housing 2 is tilted, i.e., the side where the heat dissipation slot or heat dissipation hole 12 is located. The opening of the heat dissipation hole 12 can be designed to open at a certain angle. The purpose is to design the front bracket of the outer rotor at an appropriate tilt angle, which is equivalent to forming a fan blade for cooling the motor.

[0036] In summary, the outer rotor motor of the present invention can reduce the length of its motor shaft by changing the connection or clamping method with the rotated component. This reduced size of the outer rotor motor can also reduce the overall size of the cutting equipment without compromising power. Furthermore, the connection method of the present invention allows the motor to provide greater power.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outer rotor motor, characterized in that: include: Base (1); A motor housing (2) is connected at one end to the base (1), a motor coil and a motor shaft (3) are arranged in the motor housing (2), and when in operation, the motor housing (2) rotates around the motor coil and the motor shaft (3); A clamping mechanism (4) is fixedly arranged at the other end of the motor housing (2), and the clamping mechanism (4) is used for clamping a tool.

2. The outer rotor motor according to claim 1, characterized in that Also includes: A mounting gasket (5) is located between the motor housing (2) and the clamping mechanism (4).

3. The outer rotor motor according to claim 2, characterized in that: The clamping mechanism (4) comprises a left clamping block (6) and a right clamping block (7), wherein the left clamping block (6) is a semicircular block and the right clamping block (7) is a round block with an L-shaped step. The left clamping block (6) and the right clamping block (7) are combined together to form a cylinder with a hole in the middle.

4. The outer rotor motor according to claim 3, characterized in that The other end of the motor housing (2) is provided with a first type of mounting hole (8) and a second type of mounting hole (9), and there are two first type of mounting holes (8) and two second type of mounting holes (9), which are arranged opposite to each other at intervals.

5. The outer rotor motor according to claim 4, characterized in that: The right clamping block (7) and the mounting gasket (5) are connected to the first type mounting hole (8) via screws, and the left clamping block (6) and the right clamping block (7) are connected to the second type mounting hole (9) via screws or bolts.

6. The outer rotor motor according to claim 5, characterized in that Connecting holes (10) are respectively provided on both side surfaces of the left clamping block (6) and the right clamping block (7).

7. The outer rotor motor according to claim 1, characterized in that The base (1) is provided with a plurality of circular holes (11) for heat dissipation.

8. The outer rotor motor according to claim 1, characterized in that The motor housing (2) is provided with heat dissipation slots or heat dissipation holes (12).

9. The outer rotor motor according to claim 8, characterized in that The side surface of the other end of the motor housing (2) is arranged to be inclined.

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