Brushless motor free of flat cable design

Abstract

The utility model relates to a brushless motor free of flat cable design, which comprises a circuit board, a framework and a Hall support, a Hall element is inserted on the Hall support, the Hall support is fixed on the circuit board, and the Hall element is connected with the circuit board. A wire passing groove is formed in the periphery of the framework, wire blocking plates are arranged on the inner side of the wire passing groove, and an open groove communicated with the wire passing groove is formed between every two adjacent wire blocking plates. The Hall support is provided with a slot, and the slot is located at the top of the open slot. By designing the winding displacement-free structure of the brushless motor, the labor productivity is improved, the reject ratio of products is reduced, and the quality of the products is improved. And moreover, the product manufacturing efficiency can be improved, and meanwhile, the product is more miniaturized due to the integrated product structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor manufacturing technical field especially relates to a brushless motor of exempt from the design of wire arrangement. BACKGROUND

[0002] With the continuous development of industrial automation and intelligentization, as a kind of efficient, reliable driving device, brushless motor has been widely applied in various fields, such as industrial production equipment, household appliances, electric tools, unmanned aerial vehicle etc. The connection between the internal winding of brushless motor on the market and external driver is mostly to take the enameled wire winding, carry out parallel wire, arrange wire, manual welding, sleeve insulating sleeve, bind etc. Operation, make motor winding connect with driver through lead-out wire. However, this connection mode is complicated, and the process steps are more, and the time is longer, and also needs certain proficiency. SUMMARY

[0003] The utility model aims at providing a brushless motor of exempt from the design of wire arrangement to solve the problems encountered in the above background.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A brushless motor of exempt from the design of wire arrangement, including circuit board, skeleton and hall bracket, the hall bracket is inserted with hall element, and the hall bracket is fixed on the circuit board, and the hall element is connected with the circuit board;The outer periphery of the skeleton is provided with a wire slot, and the inner side of the wire slot is provided with a wire baffle, and the adjacent two wire baffles are provided with a slot communicated with the wire slot;The insertion slot is located at the top of the slot.

[0006] In the above scheme, the hall bracket includes a base and a fixed shell, the base is integrally connected with the fixed shell, the bottom of the base is fixedly connected with the circuit board, the inside of the fixed shell is provided with a hall element mounting groove matched with the hall element, the bottom of the hall element mounting groove is provided with a heat dissipation groove, and the insertion slot is arranged on one side of the fixed shell.

[0007] In the above scheme, the bottom of the hall element is provided with a hall element pin, and the circuit board is provided with a hall element fixing hole matched with the hall element pin;The bottom of the base is provided with a hall bracket pin, and the circuit board is provided with a bracket mounting hole matched with the hall bracket pin.

[0008] In the above scheme, the hall element pin extends to the hall element fixing hole through the heat dissipation groove, the heat dissipation groove is T-shaped structure, the other side of the fixed shell is provided with a heat conduction groove, and the upper part of the heat conduction groove is provided with an opening.

[0009] The outer peripheral bottom of the skeleton is provided with wire passing columns, the wire passing columns are in trapezoidal structures, the inner sides of adjacent two wire passing columns form the slot, and the wire passing groove is arranged on the inner side of the wire passing column.

[0010] Compared with the prior art, the brushless motor without wire discharge structure designed in the utility model can improve the labor productivity, reduce the defective rate of products, and improve the quality of products. BRIEF DESCRIPTION OF DRAWINGS

[0011] The disclosure of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the utility model. In the drawings, the same reference numerals are used to refer to the same parts. Among them:

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is a structural schematic view of the utility model after removing the circuit board;

[0014] Figure 3 It is an installation schematic view of the skeleton and the Hall bracket in the utility model;

[0015] Figure 4 It is a structural schematic view of the Hall bracket and the Hall element in the utility model;

[0016] Figure 5 It is a structural schematic view of the Hall bracket and the Hall element in the utility model from another perspective;

[0017] Figure 6 It is a top structural schematic view of the skeleton in the utility model;

[0018] Figure 7 It is a bottom structural schematic view of the skeleton in the utility model.

[0019] Reference numerals in the drawings: 1-circuit board; 11-bracket mounting hole; 12-Hall element fixing hole; 2-skeleton; 21-wire blocking plate; 22-wire passing groove; 23-wire passing column; 24-slot; 25-wire blocking column; 3-rotor; 31-magnetic steel; 4-Hall bracket; 41-slot; 42-base; 43-fixing shell; 44-Hall element; 45-Hall element pin; 46-Hall element mounting groove; 47-radiating groove; 48-Hall bracket pin; 49-heat conduction groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention will now be further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the relevant components of the present invention.

[0021] According to the technical solution of the present invention, without changing the essential spirit of the present invention, those skilled in the art may propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are merely illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0022] The technical solution of the present utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Example 1, as Figures 1-3 As shown, a brushless motor with a cable-free design includes a circuit board 1, a frame 2, and a Hall element bracket 4. A Hall element 44 is mounted on the Hall element bracket 4, which is fixed to the circuit board 1 and connected to the circuit board 1. By directly mounting the Hall element 44 on the circuit board 1 using the Hall element bracket 4, the number of overlapping wires can be reduced, achieving a cable-free design. The circuit board 1 routes the power and Hall elements, while the Hall angle is fixed according to design requirements, integrating the stator assembly with the Hall element assembly.

[0024] The outer periphery of the frame 2 is provided with a wire groove 22, and the inner side of the wire groove 22 is provided with a wire retaining plate 21. The wire retaining plate 21 is used to wind the motor winding on it, and the wound magnetic induction coil is located in the wire groove 22. Between two adjacent wire retaining plates 21, there is a slot 24 connected to the wire groove 22. The slot 24 has the function of conducting heat from the rotor 3 and can also be used to connect the magnetic induction conductive circuit.

[0025] Hall effect bracket 4 is provided with a slot 41, located at the top of slot 24, for wiring and routing, and also provides space for later installation. By designing the angles of the Hall effect and positioning holes on the circuit board and adapting them to the frame positioning posts, the Hall effect angle is fixed, ensuring continuous and accurate output of sensing signals during operation.

[0026] Example 2, based on Example 1, please refer to Figure 4 and Figure 5The Hall bracket 4 comprises a base 42 and a fixing shell 43, the base 42 is integrally connected with the fixing shell 43, the bottom of the base 42 is fixedly connected with the circuit board 1, the inside of the fixing shell 43 is provided with a Hall element mounting groove 46 matched with the Hall element 44, the shape of the Hall element mounting groove 46 is the same as the shape of the Hall element 44, so as to facilitate the insertion and fixing. The bottom of the Hall element mounting groove 46 is provided with a heat dissipation groove 47, and the insertion groove 41 is arranged on one side of the fixing shell 43.

[0027] As a preferred scheme, the bottom of the Hall element 44 is provided with a Hall element pin 45, the circuit board 1 is provided with a Hall element fixing hole 12 matched with the Hall element pin 45, and the Hall element pin 45 is fixed by soldering after being inserted into the Hall element fixing hole 12. The bottom of the base 42 is provided with a Hall bracket pin 48, and the circuit board 1 is provided with a bracket mounting hole 11 matched with the Hall bracket pin 48, and the Hall bracket pin 48 is fixed by soldering after being inserted into the bracket mounting hole 11.

[0028] In addition, it should be noted that the Hall element pin 45 extends to the Hall element fixing hole 12 through the heat dissipation groove 47, and the heat dissipation groove 47 is a T-shaped structure, which dissipates the heat generated by the Hall bracket 4 and the Hall element 44 during operation. The other side of the fixing shell 43 is provided with a heat conduction groove 49, and the upper part of the heat conduction groove 49 is provided with an opening. Through the heat conduction groove 49 and the insertion groove 41, the Hall element 44 is inserted into the Hall bracket 4, and is fastened under the pressing action, so that the circuit of the circuit board 1 after welding is more stable.

[0029] In example 3, on the basis of example 1, please refer to Figure 6 and Figure 7 The skeleton 2 is directly inserted into the wire passing column 23 in the stator during the installation of the brushless motor, and the rotor 3 is installed at the middle position of the brushless motor, and the magnetic steel 31 is installed on the rotor 3, which is used to generate magnetic cutting with the winding wound in the wire passing groove 22 during rotation. The outer periphery of the skeleton 2 is provided with a wire passing column 23, the wire passing column 23 is a trapezoidal structure, and the inside of the adjacent two wire passing columns 23 forms a slot 24, and the wire passing groove 22 is arranged on the inside of the wire passing column 23, so the wire passing groove 22 is also a trapezoidal structure.

[0030] As a preferred scheme, the top of the wire passing groove 22 is provided with a wire blocking column 25, and the inside of the wire blocking column 25 is provided with a chamfer. The wire blocking column 25 abuts against the adjacent two motor windings, and is guided by the chamfers on both sides, and guides the position of the winding, improves the standardization of motor product assembly, and generates stable magnetic inductance.

[0031] Through the design of installing the line blocking plate 21 and the wire passing groove 22 and the like of the skeleton 2, the parallel connection is completed when winding, so that the parallel connection process is saved, and the production efficiency is improved. Through the design of the width of the wire passing groove 22 and the size of the wire passing column 23, it is ensured that the enameled wire has sufficient space for passing, meanwhile, the wire blocking column 25 has sufficient strength for supporting, the above two requirements are met, meanwhile, it is required that the wire outlet is not affected as much as possible, so that the slot fill factor in the stator slot is maintained to be sufficient.

[0032] The above-described specific embodiments explain the purpose, technical solutions and advantages of the present application in further detail, and it should be understood that the above-described embodiments are only specific embodiments of the present application and are not used to limit the protection scope of the present application, and any modifications, equivalent replacements, improvements and the like made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A brushless motor with a cable-free design, characterized by: The invention comprises a circuit board (1), a frame (2) and a Hall element (4); a Hall element (44) is inserted into the Hall element (4), the Hall element (44) is fixed on the circuit board (1), and the Hall element (44) is connected to the circuit board (1); a wire groove (22) is provided on the outer periphery of the frame (2); a wire blocking plate (21) is provided on the inner side of the wire groove (22); a slot (24) communicating with the wire groove (22) is provided between two adjacent wire blocking plates (21); and a slot (41) is provided on the Hall element (44), and the slot (41) is located at the top of the slot (24).

2. The brushless motor with a wire-free design according to claim 1, characterized in that: The Hall element bracket (4) comprises a base (42) and a fixed shell (43), the base (42) and the fixed shell (43) are integrally connected, the bottom of the base (42) is fixedly connected to the circuit board (1), a Hall element mounting groove (46) matching the Hall element (44) is provided inside the fixed shell (43), a heat dissipation groove (47) is provided at the bottom of the Hall element mounting groove (46), and the slot (41) is provided on one side of the fixed shell (43).

3. The brushless motor with a wire-free design according to claim 2, characterized in that: The bottom of the Hall element (44) is provided with a Hall element pin (45), and the circuit board (1) is provided with a Hall element fixing hole (12) plugged into the Hall element pin (45); the bottom of the base (42) is provided with a Hall bracket pin (48), and the circuit board (1) is provided with a bracket mounting hole (11) plugged into the Hall bracket pin (48).

4. The brushless motor with a wire-free design according to claim 3, characterized in that: The Hall element pin (45) passes through the heat dissipation groove (47) and extends to the Hall element fixing hole (12); the heat dissipation groove (47) is a T-shaped structure; a heat conduction groove (49) is provided on the other side of the fixing shell (43); and an opening is provided at the top of the heat conduction groove (49).

5. The brushless motor with a wire-free design according to claim 1, characterized in that: The outer bottom of the frame (2) is provided with a wire-passing post (23), which is in a trapezoidal structure. The inner sides of two adjacent wire-passing posts (23) form the slot (24), and the wire-passing slot (22) is opened on the inner side of the wire-passing post (23).

6. The brushless motor with a wire-free design according to claim 5, characterized in that: A wire blocking column (25) is installed in the middle of the top of the wire passing groove (22), and the inner side of the wire blocking column (25) is provided with a chamfer.

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