A kind of outer rotor brushless motor coil testing device and testing method

Abstract

The application discloses a kind of outer rotor brushless motor coil testing device and testing method, including coil and base;The upper end surface of the base is provided with detachable support seat, the coil fixing seat that can be up and down is arranged on the support seat, the locking mechanism for limiting coil fixing seat is provided on the support seat;The coil is set on the upper end of coil fixing seat, and the coil is positioned axially by the lower end surface of the coil and the upper end surface of the support seat contact;Rotatable rotor assembly is also provided on the coil fixing seat, and the coil is energized to drive rotor assembly to test.The application adopts fixed coil and assembles outer rotor to test coil, can realize the quick disassembly and test of coil, and can adapt to different height coils.

Description

Technical Field

[0001] This invention relates to the field of motor testing equipment technology, specifically to a testing device and method for an external rotor brushless motor coil. Background Technology

[0002] In the current technology, testing motor coils involves testing certain parameters to determine if there are any problems with the coils. However, even after assembling the entire motor and testing it, many problems still arise due to inconsistent coil performance or incorrect coil winding methods, leading to rework and scrapping. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a testing device and method for an external rotor brushless motor coil, which uses a fixed coil and an assembled external rotor to test the coil, and can realize the rapid disassembly and testing of the coil, and can adapt to coils of different heights.

[0004] The technical solution provided by the present invention to solve the above problems is as follows: an external rotor brushless motor coil testing device, including a coil and a base; a detachable support seat is provided on the upper end face of the base, a coil fixing seat that can move up and down is provided on the support seat, and a locking mechanism for limiting the coil fixing seat is provided on the support seat.

[0005] The coil is sleeved on the upper end of the coil fixing base, and the coil is axially positioned by contacting the upper end surface of the support base with the lower end surface of the coil.

[0006] The coil mounting base is also equipped with a rotatable rotor assembly, which drives the rotor assembly to perform testing after the coil is energized.

[0007] Preferably, the rotor assembly includes an outer rotor and a rotating connection mechanism, the rotating connection mechanism being disposed on a coil fixing seat, and the outer rotor being connected to the rotating connection mechanism.

[0008] Preferably, the rotating connection mechanism includes a bearing and a bushing. The coil fixing seat is provided with a receiving hole that mates with the bearing. The bearing is installed on the coil fixing seat, and the bushing is installed in the bearing seat hole of the bearing. The outer rotor is inserted into the bushing.

[0009] Preferably, the upper end of the receiving hole is provided with a limiting protrusion ring, and the lower end of the receiving hole is provided with a bearing cover plate, which is connected to the coil fixing seat by bolts.

[0010] Preferably, the support base is provided with an axial movable hole, and the coil fixing base is movably engaged with the movable hole.

[0011] Preferably, the locking mechanism includes a plurality of locking bolts, and the movable hole has a plurality of bolt holes on its wall, with the locking bolts installed in the bolt holes.

[0012] Preferably, the inner ring of the coil is provided with an axial limiting groove one, and the coil fixing seat is provided with an axial limiting groove two at a position corresponding to the limiting groove one. The limiting groove one and the limiting groove two are limited by a pin.

[0013] Preferably, both the base and the support are provided with bolt holes, and bolts are installed in the bolt holes.

[0014] This invention also discloses a testing method for the external rotor brushless motor coil testing device as described above, the method comprising the following steps:

[0015] Insert the coil holder into the coil, aligning the first limiting groove on the inner coil with the second limiting groove on the coil holder. Then insert the pin to complete the radial limiting of the coil.

[0016] After assembly, the coil holder is placed into the support base. Axial positioning is achieved by direct contact between the bottom end face of the coil and the top end face of the support base. Then, the locking bolts are tightened to complete the positioning between the coil holder and the support base.

[0017] Next, insert the bushing into the bearing, and position it by contacting the bearing end face; then insert the outer rotor into the bushing, and position it by contacting the bushing end face.

[0018] The coil is energized to perform a test.

[0019] Preferably, when the diameter of the positioning shaft of the outer rotor is different, the positioning shaft of the outer rotor is matched by replacing the bushing that mates with the bearing.

[0020] Compared with existing technologies, the advantages of this invention are: the testing device of this invention is simple to operate and highly flexible; this invention is beneficial for testing coils by fixing the coil and assembling the outer rotor, enabling rapid coil assembly and disassembly and testing, and can adapt to coils of different heights, as well as positioning shafts of different diameters on the outer rotor. This invention is beneficial for testing coils according to the performance requirements of the entire motor without fully assembling the motor, eliminating rework and scrapping caused by inconsistent coil performance or incorrect coil winding methods during the entire motor testing process, and also improving product consistency. Attached Figure Description

[0021] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention from another direction;

[0024] Figure 3 This is a cross-sectional view of the present invention;

[0025] Figure 4 This is a schematic diagram of the support base, bearing, and bearing cover plate of the present invention;

[0026] Figure 5 This is a top view of the invention after the outer rotor assembly has been removed;

[0027] Figure 6 yes Figure 5 Enlarged diagram of point A in the middle.

[0028] The attached diagram is labeled as follows: 1. Outer rotor, 2. Positioning shaft, 3. Coil, 4. Coil fixing seat, 5. Locking bolt, 6. Support seat, 7. Bolt, 8. Base, 9. Movable hole, 10. Bearing cover plate, 11. Bushing, 12. Bearing, 13. Receiving hole, 14. Limiting protrusion ring, 15. Limiting groove two, 16. Limiting groove one. Detailed Implementation

[0029] The following will describe in detail the implementation of the present invention with reference to the accompanying drawings and embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0030] In the description of this invention, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Example 1

[0034] A test device for an external rotor brushless motor coil includes a coil 3 and a base 8; the upper surface of the base 8 is provided with a detachable support 6, the support 6 is provided with a coil fixing seat 4 that can move up and down, and the support 6 is provided with a locking mechanism for limiting the coil fixing seat 4.

[0035] The coil 3 is sleeved on the upper end of the coil fixing base 4, and the coil 3 is axially positioned by contacting the upper end surface of the support base 6 with the lower end surface of the coil 3.

[0036] The coil mounting base 4 is also equipped with a rotatable rotor assembly. When the coil 3 is energized, it drives the rotor assembly to perform testing.

[0037] In the above scheme, the coil fixing base and support base can be replaced to accommodate coils of various inner and outer diameters. Alternatively, the coil fixing base and support base can be made into an adjustable inner and outer diameter structure to accommodate coils of various inner and outer diameters.

[0038] In this embodiment, the rotor assembly specifically includes an outer rotor 1 and a rotating connection mechanism. The rotating connection mechanism is disposed on the coil fixing seat 4, and the outer rotor 1 is connected to the rotating connection mechanism.

[0039] Furthermore, the rotating connection mechanism includes a bearing 12 and a bushing 11. The coil fixing seat 4 is provided with a receiving hole 13 that cooperates with the bearing 12. The bearing 12 is installed on the coil fixing seat 4, and the bushing 11 is installed in the bearing seat hole of the bearing 12. The outer rotor 1 is inserted into the bushing 11.

[0040] The specific method of fixing the bearing is as follows: a limiting protrusion ring 14 is provided at the upper end of the receiving hole 13, and a bearing cover plate 10 is provided at the lower end of the receiving hole 13. The bearing cover plate 10 is connected to the coil fixing seat 4 by bolts 7. The bearing is installed into the receiving hole, and the upper end of the bearing contacts and limits the limiting protrusion ring, and the lower end of the bearing contacts and limits the bearing cover plate.

[0041] In this embodiment, the support base 6 is provided with an axial movable hole 9, and the coil fixing base 4 is movably fitted with the movable hole 9. It should be noted that the movable hole is a circular hole, and the coil fixing base is a cylindrical structure adapted to the shape of the circular hole. In order to reduce the weight of the coil fixing base, its interior is a hollow structure, and its specific structure is as follows. Figure 4 As shown.

[0042] like Figure 3 As shown, the locking mechanism includes several locking bolts 5. Several bolt holes are provided on the wall of the movable hole 9. The locking bolts 5 are installed in the bolt holes. After the coil fixing seat and the support seat are properly matched, the locking bolts are tightened so that one end of the locking bolt abuts against the circumferential surface of the coil fixing seat, thus completing the positioning.

[0043] The specific positioning method between the coil and the coil holder is as follows: Figure 5 and Figure 6 As shown, the inner ring of the coil 3 is provided with an axial limiting groove 16, and the coil fixing seat 4 is provided with an axial limiting groove 15 at the position corresponding to the limiting groove 16. The limiting groove 16 and the limiting groove 15 are limited by a pin.

[0044] Bolt holes are provided on both the base 8 and the support 6, and bolts 7 are installed in the bolt holes to achieve a detachable connection between the base and the support by fixing with bolts.

[0045] During assembly, the support base is fixed to the base with screws; the bearing is placed into the receiving hole of the coil fixing base, with the upper end face of the bearing contacting the limiting protrusion on the coil fixing base and the lower end face contacting the bearing cover plate. The bearing and bearing cover plate are fixed to the coil fixing base with bolts; the coil fixing base is inserted into the coil, and the limiting groove 16 on the inner ring of coil 3 is aligned with the limiting groove 15 on the coil fixing base 4. The pin is inserted into the limiting groove 1 and the limiting groove 2 to radially limit the coil; the assembled coil fixing base is inserted into the support base that has been assembled on the base. After the bottom end face of the coil is in direct contact with the top end face of the support base and is positioned, the coil fixing base is fixed on the side of the support base with locking bolts; then the bushing is inserted into the bearing, and the end face of the bushing contacts the end face of the bearing for positioning; the outer rotor is inserted into the bushing, and the end face of the outer rotor contacts the end face of the bushing for positioning.

[0046] When testing and replacing coils using this invention, the assembled coil is directly energized for testing. After the test, the outer rotor is removed from the bushing, the locking bolts fixed to the side of the support are loosened, and the coil fixing seat fixed to the support is removed. The coil and pin fixed to the coil fixing seat are then removed. After replacing the coil with a new one, the coil and pin are reassembled onto the coil fixing seat. The reassembled coil fixing seat is then placed back into the support, with the bottom end face of the coil directly contacting and positioning the top end face of the support. The coil is then fixed by the locking bolts on the side of the support. The outer rotor is then reinserted into the bushing. The coil power supply is reconnected, and the test is conducted again.

[0047] In this solution, it should be noted that the lower end of the coil is positioned by contacting the upper end of the support base, so the testing device of this solution can test coils of different heights.

[0048] Example 2

[0049] This embodiment specifically discloses a testing method for the external rotor 1 brushless motor coil testing device described in Example 1, wherein the method includes the following steps.

[0050] Insert the coil holder 4 into the coil 3, and align the limiting groove 16 on the inner ring of the coil 3 with the limiting groove 15 on the coil holder 4. Then insert the pin to complete the radial limiting of the coil 3.

[0051] After assembly, the coil fixing seat 4 is placed into the support seat 6. The bottom end face of the coil 3 is directly in contact with the top end face of the support seat 6 for axial positioning. Then, the locking bolt 5 is tightened to complete the positioning between the coil fixing seat 4 and the support seat 6.

[0052] Next, insert the bushing into the bearing, and position it by contacting the bearing end face; then insert the outer rotor into the bushing, and position it by contacting the bushing end face.

[0053] When the diameter of the positioning shaft 2 of the outer rotor 1 is different, the bushing 11 that mates with the bearing 12 is replaced to match the positioning shaft 2 of the outer rotor 1.

[0054] Power on coil 3 and test coil 3.

[0055] The above description only illustrates the preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All modifications made within the scope of the independent claims of this invention are also within the scope of protection of this invention.

Claims

1. A coil testing device for an external rotor brushless motor, comprising a coil (3) and a base (8); characterized in that: The upper surface of the base (8) is provided with a detachable support seat (6), and the support seat (6) is provided with a coil fixing seat (4) that can move up and down. The support seat (6) is provided with a locking mechanism for limiting the coil fixing seat (4). The coil (3) is sleeved on the upper end of the coil fixing seat (4), and the coil (3) is axially positioned by contacting the upper end of the support seat (6) with the lower end face of the coil (3). The coil mounting base (4) is also provided with a rotatable rotor assembly. When the coil (3) is energized, it drives the rotor assembly to perform testing. The rotor assembly includes an outer rotor (1) and a rotating connection mechanism. The rotating connection mechanism is disposed on a coil fixing seat (4), and the outer rotor (1) is connected to the rotating connection mechanism. The rotating connection mechanism includes a bearing (12) and a bushing (11). The coil fixing seat (4) is provided with a receiving hole (13) that cooperates with the bearing (12). The bearing (12) is installed on the coil fixing seat (4). The bushing (11) is installed in the bearing seat hole of the bearing (12). The outer rotor (1) is inserted into the bushing (11).

2. The external rotor brushless motor coil testing device according to claim 1, characterized in that: The upper end of the receiving hole (13) is provided with a limiting protrusion ring (14), and the lower end of the receiving hole (13) is provided with a bearing cover plate (10). The bearing cover plate (10) is connected to the coil fixing seat (4) by bolts (7).

3. The external rotor brushless motor coil testing device according to claim 1, characterized in that: The support base (6) is provided with an axial movable hole (9), and the coil fixing base (4) is movably engaged with the movable hole (9).

4. The external rotor brushless motor coil testing device according to claim 3, characterized in that: The locking mechanism includes several locking bolts (5), and several bolt holes are provided on the wall of the movable hole (9), and the locking bolts (5) are installed in the bolt holes.

5. The external rotor brushless motor coil testing device according to claim 1, characterized in that: The inner ring of the coil (3) is provided with an axial limiting groove one (16), and the coil fixing seat (4) is provided with an axial limiting groove two (15) at the position corresponding to the limiting groove one (16). The limiting groove one (16) and the limiting groove two (15) are limited by a pin.

6. The external rotor brushless motor coil testing device according to claim 1, characterized in that: Bolt holes are provided on both the base (8) and the support (6), and bolts (7) are provided in the bolt holes.

7. A test method for a test device for an external rotor (1) brushless motor coil as described in any one of claims 1-6, characterized in that: The method includes the following steps: Insert the coil holder (4) into the coil (3), and at the same time align the first limiting groove (16) on the inner ring of the coil (3) with the second limiting groove (15) on the coil holder (4). Then insert the pin to complete the radial limiting of the coil (3). After assembly, the coil fixing seat (4) is placed into the support seat (6). The bottom end face of the coil (3) is directly in contact with the top end face of the support seat (6) for axial positioning. Then, the locking bolt (5) is tightened to complete the positioning between the coil fixing seat (4) and the support seat (6). Next, insert the bushing (11) into the bearing (12), and position the bushing (11) end face in contact with the bearing (12) end face; insert the outer rotor (1) into the bushing (11), and position the outer rotor (1) end face in contact with the bushing (11) end face; The coil (3) is energized and tested.

8. The test method of the external rotor (1) brushless motor coil test device according to claim 7, characterized in that: When the diameter of the positioning shaft (2) of the outer rotor (1) is different, the positioning shaft (2) of the outer rotor (1) is matched by replacing the bushing (11) that cooperates with the bearing (12).

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