Embedded PCB mounting structure of hub motor

Abstract

The utility model discloses an embedded PCB installation structure of a wheel hub motor, which comprises a PCB installation structure composed of a fixing frame and an aluminum support, the end face of the fixing frame is provided with a plurality of wire passing grooves, the lower ends of the plurality of wire passing grooves are provided with matching surfaces, and the inner walls and the upper ends of the plurality of matching surfaces are provided with top inverted buckling parts and bottom clamping parts. A barb is arranged on one side of the top back-off part, an annular groove is formed in the bottom of the aluminum support, at least three grooves are formed in the lower end of the annular groove, and the three grooves are arranged at an angle of 120 degrees. The beneficial effects of the utility model are that the aluminum support saves a plurality of screw holes and a plurality of sections of heat-shrinkable bushings, and the fixing frame is made of plastic materials, so that the cost is reduced, the risk that the PCB is damaged by a screwdriver bit during screwing is avoided, the fixing frame is convenient, fast and reliable to install, the production process and working hours are reduced, the production efficiency is improved, and the automatic welding of a production line is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub motor PCB mounting technical field, concretely is a kind of inlayed PCB mounting structure of wheel hub motor. BACKGROUND

[0002] The assembly structure of the existing driving wheel wheel hub motor PCB is shown in the attached drawing 6, the PCB is fixed with intermediate aluminum support by screw, then three-phase line is welded to PCB board, this structure needs to attack threaded hole in aluminum support, PCB component is prone to damage during locking screw process, three-phase line needs to be sleeved with heat shrink tube before being connected with PCB, to prevent stator core edge from cutting paint film and generating short circuit problem;Three-phase line cannot be fixed when welding, can only be welded manually, cannot realize automatic welding, assembly process is more, lead to long production rhythm, low production line efficiency, low capacity. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of inlayed PCB mounting structure of wheel hub motor to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of inlayed PCB mounting structure of wheel hub motor, including the PCB mounting structure of fixed frame and aluminum support, the fixed frame end face is equipped with multiple wire grooves, the lower end of multiple wire grooves is equipped with cooperation face, and the inner wall and upper end of multiple cooperation faces are equipped with top reverse buckle part and bottom clamping part, and the side of top clamping part is equipped with barb, the aluminum support bottom is equipped with annular groove, and the lower end of annular groove is equipped with at least three grooves, three grooves are arranged at 120 °.

[0005] Further optimization, the fixed frame is annularly arranged, and multiple wire grooves are equidistantly arranged on the end face of the annular fixed frame.

[0006] Further optimization, the cooperation face and the annular fixed frame are integrally formed structure.

[0007] Further optimization, the bottom clamping part is multiple, is arranged in barb shape, and the top reverse buckle part is formed between every two barbs.

[0008] Further optimization, the lower end of the annularly arranged fixed frame is symmetrically provided with a plurality of first positioning columns.

[0009] Further optimization, the end face of multiple top reverse buckle parts is PCB mounting face.

[0010] Further optimization, the aluminum support is integrally formed aluminum casting.

[0011] Further optimization, the fixed frame is integrally formed plastic injection molding.

[0012] In a further optimized configuration, the aluminum bracket is provided with a second positioning post on one side of one of the grooves, and the groove is a waist-shaped groove.

[0013] Beneficial effects

[0014] The in-wheel motor embedded PCB mounting structure provided by this utility model saves on multiple screw holes and heat shrink tubing sections by using an aluminum bracket. The newly added fixing bracket is made of plastic, reducing costs. It eliminates the need for screwing and heat shrink tubing, avoiding the risk of PCB damage from screwdriver bits. The fixing bracket is easy, quick, and reliable to install, reducing production steps and time, and improving production efficiency. It enables automated welding on the production line, improving both production efficiency and welding stability. The PCB is fixed to the aluminum bracket by the double barb structure of the fixing bracket. At the same time, the UVW three-phase wires can be automatically welded after passing through the barbs of the fixing bracket and can be caught in the gaps of the PCB pads, thus improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fixing frame structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the aluminum support structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the assembly of the aluminum bracket and stator assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the fixing frame and aluminum bracket of this utility model being snapped together.

[0020] Figure 6 This is a schematic diagram of PCB assembly in the prior art. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] Example

[0023] like Figures 1-5As shown, an embedded PCB mounting structure for a hub motor includes a PCB mounting structure composed of a fixing frame 1 and an aluminum bracket 2. The fixing frame 1 has multiple wire passage grooves 3 on its end face. The lower end of each of the multiple wire passage grooves 3 is provided with a mating surface 4. The inner wall and upper end of each of the multiple mating surfaces 4 are provided with a top buckle 5 and a bottom snap-fit ​​part 9. The top snap-fit ​​part 5 is provided with a barb 6 on one side. The bottom of the aluminum bracket 2 is provided with an annular groove 7. The lower end of the annular groove 7 is provided with at least three grooves 8. The three grooves 8 are set at 120°.

[0024] In this embodiment, the fixing frame 1 is arranged in a ring, and multiple wire grooves 3 are equidistantly arranged on the end face of the ring fixing frame.

[0025] The mating surface 4 and the annular fixing frame are integrally formed.

[0026] The bottom snap-fit ​​part 9 consists of multiple parts, which are arranged in the shape of barbs, and a top snap-fit ​​part 5 is formed between every two barbs.

[0027] The lower end of the ring-shaped fixing frame 1 is symmetrically provided with multiple first positioning posts 10, which maintain a fixed relative position with the stator core.

[0028] Multiple top inverted sections 5 have PCB mounting surfaces 11.

[0029] Aluminum bracket 2 is a one-piece molded aluminum casting.

[0030] The fixing frame 1 is a one-piece molded plastic injection part.

[0031] The aluminum bracket 2 has a second positioning post 12 on one side of one of the grooves 8, and the groove 8 is an oblong groove.

[0032] The aluminum bracket is interference-fitted with the stator core and is fixed in relative position to the stator core via positioning posts. The fixing bracket is also fixed in relative position to the stator core and aluminum bracket via positioning posts. The bottom of the fixing bracket is inverted and pressed into the annular groove of the aluminum bracket, and installed together with the aluminum bracket. Simultaneously, the side of the bottom inverted clip fits into the waist-shaped groove of the aluminum bracket, together with the positioning posts, providing radial limiting. The UVW three-phase wires pass through one wire passage groove of the fixing bracket, penetrate deep into the waist-shaped groove of the aluminum bracket, fold back, and hang on the barb on the fixing bracket. After passing through the second wire passage groove, they are pulled back to the coil. The PCB is then fixed to the mounting bracket by the top inverted clip and the PCB mounting surface of the bracket. The UVW three-phase wires are then pulled back from the second wire groove towards the middle and squeezed into the gaps of the PCB pads, achieving rapid soldering. The soldered three-phase wires and the inverted clip of the bracket together serve to fix the PCB. The entire installation process does not require screws or heat shrink tubing for the UVW three-phase wires, reducing operation steps, avoiding the risks of complex operations, and enabling automated soldering on the production line, improving production efficiency, reducing costs and increasing profits.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An embedded PCB mounting structure for a hub motor, characterized in that: The PCB mounting structure includes a fixing frame (1) and an aluminum bracket (2). The fixing frame (1) has multiple wire-passing grooves (3) on its end face. The lower end of each of the multiple wire-passing grooves (3) has a mating surface (4). The inner wall and upper end of each of the multiple mating surfaces (4) have a top buckle (5) and a bottom snap-fit ​​(9). The top buckle (5) has a barb (6) on one side. The bottom of the aluminum bracket (2) has an annular groove (7). The lower end of the annular groove (7) has at least three grooves (8). The three grooves (8) are set at 120°.

2. The embedded PCB mounting structure of the hub motor according to claim 1, characterized in that: The fixing frame (1) is arranged in a ring, and multiple wire grooves (3) are equidistantly arranged on the end face of the ring fixing frame.

3. The embedded PCB mounting structure for the hub motor according to claim 2, characterized in that: The mating surface (4) and the annular fixing frame are integrally formed.

4. The embedded PCB mounting structure of the hub motor according to claim 1, characterized in that: The bottom snap-fit ​​portion (9) is multiple and is arranged in the shape of barbs, and the top snap-fit ​​portion (5) is formed between every two barbs.

5. The embedded PCB mounting structure of the hub motor according to claim 2, characterized in that: The lower end of the ring-shaped fixing frame (1) is symmetrically provided with multiple first positioning posts (10).

6. The embedded PCB mounting structure of the hub motor according to claim 4, characterized in that: The end faces of the multiple top inverted portions (5) are PCB mounting surfaces (11).

7. The embedded PCB mounting structure for the hub motor according to claim 1, characterized in that: The aluminum bracket (2) is an integrally formed aluminum casting.

8. The embedded PCB mounting structure of the hub motor according to claim 1, characterized in that: The fixing frame (1) is an integrally molded plastic injection part.

9. The embedded PCB mounting structure of the hub motor according to claim 1, characterized in that: The aluminum bracket (2) is provided with a second positioning post (12) on one side of one of the grooves (8), and the groove (8) is a waist-shaped groove.

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