Wiring structure of external rotor brushless motor

Abstract

The utility model discloses an external-rotation brushless motor wiring structure, and belongs to the technical field of external-rotation brushless motors, the external-rotation brushless motor wiring structure comprises a base and a bracket, a stator iron core is fixedly mounted in the base, a rotor iron core is arranged in the stator iron core, a circuit board is fixedly mounted at the bottom of the bracket, and the circuit board is connected with the motor. The stator core is electrically connected with the circuit board through a connecting line, and the outer surface of the circuit board is provided with a welding point matched with the connecting line; the clamping block is pulled to be far away from the fixing block, so that the connecting wire is conveniently placed in the lower semicircular groove in the fixing block, the clamping block is loosened after placement is completed, the elastic characteristic of the spring is utilized to apply pulling force to the clamping block to adjust the position of the clamping block, and the connecting wire is clamped and fixed between the lower semicircular groove and the upper semicircular groove; therefore, the connecting wire can be limited and fixed, and the connecting wire is ensured not to deviate during welding, so that the risk of pseudo soldering and false soldering can be eliminated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of outer-rotation brushless motors, and particularly relates to a wiring structure of an outer-rotation brushless motor. BACKGROUND

[0002] The working principle of the outer-rotation brushless motor is based on electromagnetic induction and magnetic interaction. The stator part is composed of coils, and when electric current passes through the coils, a rotating magnetic field is generated. The rotor part is a permanent magnet, and when the rotating magnetic field interacts with the permanent magnet, the rotor starts to rotate. By controlling the direction and frequency of the electric current in the stator coils, precise control of the motor can be achieved.

[0003] The existing wiring of the brushless outer-rotation core and the PCB circuit board is generally loose, and the wire end needs to be fixed on the PCB circuit board by manual operation and then welded. Because the connecting wire has a large diameter and is hard, there is a risk of rebound, and the wire is easy to deviate during welding, which may cause virtual welding and false welding risks. After the motor assembly process, open circuit anomalies may easily occur. Therefore, the wiring structure of the outer-rotation brushless motor needs to be improved. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the application provides a wiring structure of an outer-rotation brushless motor, which overcomes the deficiencies of the prior art and aims to solve the problem of loose wire ends in the existing wiring of the brushless outer-rotation core and the PCB circuit board, which requires manual fixing of the wire end on the PCB circuit board and then welding. Because the connecting wire has a large diameter and is hard, there is a risk of rebound, and the wire is easy to deviate during welding, which may cause virtual welding and false welding risks. After the motor assembly process, open circuit anomalies may easily occur.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a wiring structure of an outer-rotation brushless motor, comprising a machine base and a bracket, a stator core is fixedly installed in the inside of the machine base, a rotor core is arranged in the inside of the stator core, a circuit board is fixedly installed at the bottom of the bracket, the stator core is electrically connected with the circuit board through a connecting wire, a welding point matched with the connecting wire is arranged on the outer surface of the circuit board, a fixing unit is fixedly installed on one side of the welding point on the outer surface of the circuit board, the fixing unit comprises a fixing block and a clamping block, the fixing block is fixedly installed on the outer surface of the circuit board, a lower semicircular groove and an upper semicircular groove are respectively arranged on the opposite sides of the fixing block and the clamping block, a placing groove is arranged on the side of the fixing block close to the clamping block, a spring is fixedly connected in the placing groove, and the other end of the spring is fixedly connected with the clamping block.

[0006] By adopting the technical scheme, in the welding process, the clamping block is pulled away from the fixed block to place the connecting wire in the lower semicircular groove on the fixed block, the clamping block is loosened after the placement is completed, the elastic property of the spring is used to apply a pulling force to the clamping block to adjust the position of the clamping block, and the connecting wire is clamped and fixed between the lower semicircular groove and the upper semicircular groove, that is, the connecting wire can be fixed and limited, and it is ensured that the connecting wire will not be deviated during welding, so that the risk of false welding can be eliminated.

[0007] As a preferred technical scheme of the present application, the number of the lower semicircular grooves and the upper semicircular grooves is the same and is six, and the wire groove formed by the lower semicircular grooves and the upper semicircular grooves matches the outer diameter of the connecting wire.

[0008] By adopting the technical scheme, it is ensured that the connecting wire can be clamped and fixed between the lower semicircular groove and the upper semicircular groove.

[0009] As a preferred technical scheme of the present application, the upper surface of the bracket is provided with a protruding hole, the circuit board is fixedly connected with a lead-out wire through a connector, and the lead-out wire communicates with the external power supply through the protruding hole.

[0010] By adopting the technical scheme, the circuit board can communicate with the external power supply through the cooperation of the connector, the lead-out wire and the protruding hole, and it is ensured that the device can work normally.

[0011] As a preferred technical scheme of the present application, the outer surface of the rotor core is provided with bearings on both sides of the stator core, two bearings are fixedly installed in the interiors of the base and the bracket respectively, and the rotor core is movably connected with the base and the bracket through the two bearings respectively.

[0012] By adopting the technical scheme, the bearings play the roles of supporting and rotating, and allow the rotor core to rotate relative to the base and the bracket.

[0013] As a preferred technical scheme of the present application, the outer wall of the bracket is provided with a plurality of mounting holes which are uniformly distributed in a circumferential array, the outer wall of the base is threadedly connected with mounting bolts, and the front ends of the mounting bolts are located in the interiors of the mounting holes and are threadedly connected with the mounting holes.

[0014] By adopting the technical scheme, the bracket is fixedly installed on the base through the cooperation between the mounting holes and the mounting bolts.

[0015] As a preferred technical scheme of the present application, the vertical section of the bracket is provided in a T-shaped shape, and the upper end of the base is provided with an inclined surface.

[0016] By adopting the technical scheme, the inclined surface arranged at the upper end of the base can play a guiding role, and convenience is provided for subsequent installation and positioning.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] In the welding process, the clamping block is pulled away from the fixed block to facilitate the placement of the connecting wire in the lower semicircular groove on the fixed block, the clamping block is loosened after the placement is completed, the elastic property of the spring is utilized to exert a pulling force on the clamping block to adjust the position, and the connecting wire is clamped and fixed between the lower semicircular groove and the upper semicircular groove, so that the connecting wire can be fixed in position, the deviation of the connecting wire during welding is avoided, and the risk of false welding is eliminated.

[0019] Specific embodiments of the utility model are disclosed in detail with reference to the following description and drawings, and the principles of the utility model can be adopted. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model, and in the drawings:

[0021] Figure 1 It is a whole structural schematic diagram of the application;

[0022] Figure 2 It is a front sectional view structural schematic diagram of the application;

[0023] Figure 3 It is a local structural schematic diagram of the application;

[0024] Figure 4 It is a component structure schematic diagram of the fixed unit of the application.

[0025] In the drawing: 1, base; 101, inclined surface; 2, bracket; 3, stator core; 4, rotor core; 5, bearing; 6, circuit board; 7, connecting wire; 8, fixed unit; 801, fixed block; 802, clamping block; 803, lower semicircular groove; 804, upper semicircular groove; 805, placement groove; 806, spring; 9, welding point; 10, connector; 11, lead-out wire; 12, protruding hole; 13, mounting hole; 14, mounting bolt. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0027] As Figure 1 - Figure 4 The embodiment provides a wiring structure of an external-rotor brushless motor, which comprises a base 1, a bracket 2, a stator core 3 fixedly arranged in the base 1, a rotor core 4 arranged in the stator core 3, a circuit board 6 fixedly arranged at the bottom of the bracket 2, and a connecting wire 7 electrically connected with the circuit board 6 through the stator core 3, wherein the outer surface of the circuit board 6 is provided with a welding point 9 matched with the connecting wire 7, a fixing unit 8 is fixedly arranged on one side of the outer surface of the circuit board 6, the fixing unit 8 comprises a fixing block 801 and a clamping block 802, the fixing block 801 is fixedly arranged on the outer surface of the circuit board 6, and the side, facing each other, of the fixing block 801 and the clamping block 802 is respectively provided with a lower semicircular groove 803 and an upper semicircular groove 804, and the side, close to the clamping block 802, of the fixing block 801 is provided with a placing groove 805, the placing groove 805 is fixedly connected with a spring 806 in the inside, and the other end of the spring 806 is fixedly connected with the clamping block 802, in use, the clamping block 802 is pulled away from the fixing block 801 during the welding process, so that the connecting wire 7 is placed in the lower semicircular groove 803 on the fixing block 801, the clamping block 802 is released after the placing is completed, the position of the clamping block 802 is adjusted by the elastic property of the spring 806, the connecting wire 7 is clamped and fixed between the lower semicircular groove 803 and the upper semicircular groove 804, the connecting wire 7 is fixed in position, the deviation of the connecting wire 7 during the welding is avoided, and the risk of false welding is eliminated.

[0028] In the embodiment, as Figure 3 and 4 shown, the number of the lower semicircular grooves 803 and the upper semicircular grooves 804 is six, the wire slot formed by the lower semicircular grooves 803 and the upper semicircular grooves 804 is matched with the outer diameter of the connecting wire 7, and in use, the connecting wire 7 can be clamped and fixed between the lower semicircular grooves 803 and the upper semicircular grooves 804.

[0029] In the embodiment, as Figure 3 shown, the upper surface of the bracket 2 is provided with a protruding hole 12, the circuit board 6 is fixedly connected with a lead-out wire 11 through a connector 10, and the lead-out wire 11 communicates with an external power supply through the protruding hole 12, in use, the circuit board 6 can communicate with the external power supply through the cooperation among the connector 10, the lead-out wire 11 and the protruding hole 12, and the device can work normally.

[0030] In the embodiment, as Figure 3As shown, the outer surface of the rotor core 4 is provided with bearings 5 on both sides of the stator core 3, and the two bearings 5 are fixedly installed in the interiors of the base 1 and the bracket 2 respectively, and the rotor core 4 is movably connected with the base 1 and the bracket 2 through the two bearings 5 respectively, and in use, the bearings 5 play a supporting and rotating role, allowing the rotor core 4 to rotate relative to the base 1 and the bracket 2.

[0031] In this embodiment, as shown in Figure 1 and 3 As shown, the outer wall of the bracket 2 is provided with a plurality of mounting holes 13 arranged in a circumferential array, the outer wall of the base 1 is threadedly connected with mounting bolts 14, the front ends of the mounting bolts 14 are located in the interiors of the mounting holes 13 and are threadedly connected with the mounting holes 13, and in use, the bracket 2 is fixedly installed on the base 1 through the cooperation between the mounting holes 13 and the mounting bolts 14.

[0032] In this embodiment, as shown in Figure 2 The vertical section of the bracket 2 is arranged in a T-shaped shape, and the upper end of the base 1 is provided with an inclined surface 101, and in use, the inclined surface 101 provided at the upper end of the base 1 can play a guiding role, providing convenience for subsequent installation and positioning.

[0033] The working principle of the utility model is: when the external rotation brushless motor wiring structure is used, in the welding process, the clamping block 802 is pulled away from the fixed block 801 so as to place the connecting wire 7 in the lower semicircular groove 803 on the fixed block 801, the clamping block 802 is loosened after the placement is completed, the elastic property of the spring 806 is utilized to exert a pulling force on the clamping block 802 to adjust the position, the connecting wire 7 is clamped and fixed between the lower semicircular groove 803 and the upper semicircular groove 804, that is, the connecting wire 7 can be limited and fixed, ensuring that the connecting wire 7 will not be deviated in welding, so that the risk of false welding can be eliminated.

[0034] In the description of the utility model, it should be explained that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicative or implied relative importance.

[0035] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation" "is provided with" "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integral connection;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific conditions.

[0036] The utility model has been described above in combination with specific implementation, but the person skilled in the art should be clear that these descriptions are exemplary, and are not the limitation of the protection scope of the utility model.The person skilled in the art can make various modifications and modifications to the utility model according to the spirit and principle of the utility model, and these modifications and modifications are also within the scope of the utility model.

Claims

1. A wiring structure for an external brushless motor, comprising a base (1) and a bracket (2), characterized in that, A stator core (3) is fixedly installed inside the base (1), and a rotor core (4) is installed inside the stator core (3). A circuit board (6) is fixedly installed at the bottom of the bracket (2). The stator core (3) is electrically connected to the circuit board (6) via a connecting wire (7). The outer surface of the circuit board (6) is provided with solder points (9) that match the connecting wire (7). A fixing unit (8) is fixedly installed on one side of the outer surface of the circuit board (6) at the solder point (9). The fixing unit (8) includes a fixing The fixing block (801) and the clamping block (802) are fixedly installed on the outer surface of the circuit board (6). The fixing block (801) and the clamping block (802) have a lower semi-circular groove (803) and an upper semi-circular groove (804) respectively on the opposite side. The fixing block (801) has a placement groove (805) on the side near the clamping block (802). A spring (806) is fixedly connected inside the placement groove (805). The other end of the spring (806) is fixedly connected to the clamping block (802).

2. The wiring structure for an external brushless motor according to claim 1, characterized in that, The number of the lower semicircular groove (803) and the upper semicircular groove (804) are the same, with six in each case. The groove formed by the lower semicircular groove (803) and the upper semicircular groove (804) matches the outer diameter of the connecting line (7).

3. The wiring structure for an external brushless motor according to claim 1, characterized in that, The upper surface of the bracket (2) is provided with a protrusion hole (12), and the circuit board (6) is fixedly connected with a lead wire (11) through a connector (10). The lead wire (11) passes through the protrusion hole (12) and is connected to an external power supply.

4. The wiring structure for an external brushless motor according to claim 1, characterized in that, The outer surface of the rotor core (4) is provided with bearings (5) on both sides of the stator core (3). The two bearings (5) are fixedly installed inside the base (1) and the bracket (2) respectively. The rotor core (4) is movably connected to the base (1) and the bracket (2) respectively through the two bearings (5).

5. The wiring structure for an external brushless motor according to claim 1, characterized in that, The bracket (2) has a number of mounting holes (13) evenly distributed in a circular array on its outer wall. The base (1) is threaded with mounting bolts (14). The front end of the mounting bolts (14) is inside the mounting holes (13) and threadedly connected to the mounting holes (13).

6. The wiring structure for an external brushless motor according to claim 1, characterized in that, The vertical cross section of the bracket (2) is T-shaped, and the upper end of the base (1) is provided with an inclined surface (101).

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