End cap assembly and motor

Abstract

This utility model relates to an end cap assembly and a motor. The end cap assembly includes: an end cap, a motor terminal and a PCBA assembly mounted on the end cap, and a power cord assembly; the end cap includes a first end facing the inside of the motor and a second end facing the outside of the motor; the motor terminal includes a insert, the motor terminal passing through the end cap from the first end and extending out of the insert at the second end; the power cord assembly includes quick-connect terminals, and the power cord assembly achieves electrical connection and fixation between the power cord assembly and the motor terminal through the insertion of the quick-connect terminals and the insert; the PCBA assembly includes a PCBA board and Hall effect wires soldered to the PCBA board, the PCBA board being fixedly mounted on the second end of the end cap. The end cap assembly of this utility model can reduce soldering steps and simplify the installation process.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an end cap assembly and a motor. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines. Electric motors are classified into DC motors and AC motors based on the type of current they use.

[0003] A DC motor is a motor that converts direct current into mechanical energy. The structure of a DC motor typically includes a housing with one end open, a stator assembly and a rotor assembly housed inside the housing, and an end cover assembly mounted on the open end of the housing. One end of the rotor assembly extends out of the housing to output mechanical energy. The end cover assembly integrates a PCBA (Printed Circuit Board Assembly) assembly that connects to the controller and power supply.

[0004] In the prior art, the PCBA assembly of a DC motor typically includes a PCBA board, power lines, and Hall effect wires. The power lines and Hall effect wires are usually directly soldered onto the PCBA board, which is then fixed to the motor end cover by solder points or screws. Furthermore, the PCBA board also needs to be soldered to the motor terminals to achieve electrical connection between the power lines and the motor terminals. These types of PCBA components have the following problems: 1. Since the power lines are directly soldered to the PCBA board, the quality requirements for the solder joints are high. Furthermore, the insulation of the power lines shrinks due to heat during soldering, easily exposing the wire core and posing a short circuit risk. 2. The wire bonding process is quite delicate, with high requirements for soldering time, temperature, and location. For example, insufficient soldering time can lead to cold solder joints, thus requiring a high level of operator skill. 3. When defective products require rework, the solder joints must be completely removed before the PCBA board can be removed, making the operation complex. 4. Using screws to fix the PCBA board increases process and material costs. Moreover, self-tapping screws are typically used for installation; if disassembly is required, the end caps will have already suffered irreversible damage, making them unusable and increasing the scrap rate. Additionally, see [link to relevant documentation]. Figure 1The diagram shows the layout of a PCBA board in the prior art. In the prior art, the PCBA board 131' needs to be equipped with solder points 1311' for soldering Hall lines, solder points 1312' for fixing PCBA components to the end cover, and solder points 1313' for soldering power lines to the PCBA board. In addition, a certain amount of space needs to be left between each solder point to avoid short circuits. Therefore, the area required for the PCBA board 131' is relatively large. Since the motor end cover is usually circular, the PCBA board 131' in the prior art is usually designed to be circular to obtain a larger area. However, during the layout of the PCBA board, there is a lot of wasted area between the circles, resulting in a lot of scrap material and material waste.

[0005] Therefore, there is an urgent need to design an end cap assembly structure that can reduce soldering steps and simplify the installation process. Summary of the Invention

[0006] Therefore, the purpose of this utility model is to provide an end cap assembly that can reduce soldering steps and simplify the installation process.

[0007] The purpose of this utility model is also to provide a motor whose end cover assembly structure can reduce the soldering process and simplify the installation process.

[0008] To achieve the above objectives, this utility model provides an end cap assembly, comprising: an end cap, a motor terminal and a PCBA assembly mounted on the end cap, and a power cord assembly; the end cap includes a first end facing the inside of the motor and a second end facing the outside of the motor, the motor terminal includes a insert, the motor terminal passes through the end cap from the first end and extends out of the insert at the second end, the power cord assembly includes a quick-connect terminal, and the power cord assembly achieves electrical connection and fixation between the power cord assembly and the motor terminal through the insertion of the quick-connect terminal and the insert; the PCBA assembly includes a PCBA board and Hall wires soldered on the PCBA board, the PCBA board being fixedly mounted on the second end of the end cap.

[0009] The end cap has a buckle at the second end, and the PCBA board is fixed to the end cap by the buckle.

[0010] The buckle includes a fixed buckle and a movable buckle.

[0011] The buckle includes two fixed buckles and one movable buckle.

[0012] The end cap assembly also includes a sensing magnetic ring, which is installed between the end cap and the PCBA assembly.

[0013] The outer contour of the PCBA board is a symmetrical convex polygon.

[0014] This utility model also provides a motor, comprising a housing with one open end, an end cover assembly installed at the open end of the housing, and a stator assembly and a rotor assembly disposed within the housing. One end of the rotor assembly is connected to the end cover assembly, and the other end extends out of the housing to output mechanical energy. The end cover assembly includes: an end cover, motor terminals and a PCBA assembly installed on the end cover, and a power cord assembly. The end cover includes a first end facing the inside of the motor and a second end facing the outside of the motor. The motor terminal includes a insert, which passes through the end cover from the first end and extends out of the insert at the second end. The power cord assembly includes quick-connect terminals, and the power cord assembly achieves electrical connection and fixation with the motor terminal through the insertion of the quick-connect terminals and the insert. The PCBA assembly includes a PCBA board and Hall effect wires soldered onto the PCBA board. The PCBA board is fixedly installed on the second end of the end cover.

[0015] The end cap has a buckle at the second end, and the PCBA board is fixed to the end cap by the buckle.

[0016] The buckle includes a fixed buckle and a movable buckle.

[0017] The buckle includes two fixed buckles and one movable buckle.

[0018] The end cap assembly also includes an induction magnetic ring, which is installed between the end cap and the PCBA assembly. One end of the rotor assembly extends out of the housing to output mechanical energy, and the other end passes through the end cap and is connected to the induction magnetic ring.

[0019] The outer contour of the PCBA board is a symmetrical convex polygon.

[0020] The beneficial effects of this utility model are as follows: The end cap assembly and motor of this utility model do not integrate the power cord on the PCBA assembly. Instead, they are connected to the motor terminals through a quick-connect structure, eliminating the need for soldering and reducing the risk of short circuits caused by the insulation shrinking due to heat, which could expose the wire core. The PCBA board of this utility model reduces the space required to integrate the power cord on the PCBA board, allowing the PCBA board area to be smaller, reducing material usage and saving costs. Attached Figure Description

[0021] The technical solution and other beneficial effects of this utility model will become apparent from the following detailed description of specific embodiments, in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of PCBA board layout in the existing technology;

[0023] Figure 2 This is an exploded view of an end cap assembly according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A three-dimensional schematic diagram of the end cap assembly;

[0025] Figure 4 for Figure 2 Another perspective view of the end cap assembly;

[0026] Figure 5 for Figure 2 A cross-sectional schematic diagram of the end cap assembly;

[0027] Figure 6 for Figure 2 A front view of the second end of the end cap assembly;

[0028] Figure 7 This is a schematic diagram of the PCBA board layout in this application;

[0029] Figure 8 This is a three-dimensional schematic diagram of a motor according to an embodiment of the present utility model;

[0030] Figure 9 for Figure 8 A 3D schematic diagram of the motor without the end cover assembly installed;

[0031] Figure 10 for Figure 8 A partial cross-sectional schematic diagram of the motor;

[0032] Figure 11 for Figure 8 A flowchart of the motor assembly PCBA board assembly;

[0033] Figure 12 for Figure 11 A partial cross-sectional schematic diagram. Detailed Implementation

[0034] To further illustrate the technical means and effects of this utility model, the following detailed description is provided in conjunction with the preferred embodiments of this utility model and their accompanying drawings.

[0035] See Figure 2-6This utility model provides an end cap assembly 1, including: an end cap 11, a motor terminal 12 and a PCBA assembly 13 mounted on the end cap 11, and a power cord assembly 14; the end cap 11 includes a first end 112 facing the inside of the motor and a second end 113 facing the outside of the motor; the motor terminal 12 includes a insert 121, the motor terminal 12 passes through the end cap 11 from the first end 112 and extends out of the insert 121 at the second end 113; the power cord assembly 14 includes a quick-connect terminal 141, the power cord assembly 14 is electrically connected and fixed to the motor terminal 12 by the insertion of the quick-connect terminal 141 and the insert 121; the PCBA assembly 13 includes a PCBA board 131 and Hall wires 132 soldered on the PCBA board 131, the PCBA board 131 is fixedly mounted on the second end 113 of the end cap 11.

[0036] When assembling the end cover assembly 1 of this utility model, the components installed on the first end 112, such as the motor terminal 12, are first installed on the end cover 11. The Hall wire 132 is soldered onto the PCBA board 131 to obtain the PCBA assembly 13. Then, the PCBA assembly 13 is assembled onto the end cover 11, and finally, the power cord assembly 14 is plugged in.

[0037] The power cord of the end cap assembly of this utility model is not integrated on the PCBA assembly, but is connected to the motor terminal through a quick-connect structure. This eliminates the need for soldering, reducing the risk of exposed wire cores and short circuits caused by heat shrinkage of the rubber. The PCBA board of this utility model reduces the space required to integrate the power cord on the PCBA board, and the area of ​​the PCBA board can be made smaller, which can reduce material usage and save costs.

[0038] Preferably, the quick-connect terminal 141 is a cold-pressed quick-connect terminal.

[0039] Preferably, the end cap 11 has a buckle 111 at the second end 113, and the PCBA board 131 is fixed to the end cap 11 by the buckle 111. This invention uses a buckle on the end cap to fix the PCBA assembly instead of soldering, reducing the soldering process, preventing damage to other components due to the high temperature during soldering, reducing process complexity, enabling rapid disassembly of the PCBA assembly without irreversible damage, allowing components to be reused, and reducing waste. This invention reduces the number of solder points used to fix the PCBA assembly to the end cap, further reducing the area of ​​the PCBA board, reducing material usage, and saving costs.

[0040] Preferably, the buckle 111 includes a fixed buckle 1111 and a movable buckle 1112.

[0041] See Figure 11-12When the PCBA assembly 13 is installed onto the end cap 11, first tilt one end of the PCBA board 131 and snap it into the fixing clip 1111. Then, pull the movable clip 1112 outward while pressing down on the PCBA board 131 until the PCBA board 131 is flat. After that, release the movable clip 1112, which will then engage with the edge of the PCBA board 131, thus securing the PCBA assembly 13. To disassemble the PCBA assembly 13, simply pull the movable clip 1112 outward, lift one end of the PCBA board 131, and remove the PCBA assembly 13.

[0042] Preferably, the buckle 111 includes two fixed buckles 1111 and one movable buckle 1112.

[0043] Furthermore, the end cap assembly 1 of this utility model also includes a sensing magnetic ring 15, which is installed between the end cap 11 and the PCBA assembly 13.

[0044] Preferably, the outer contour of the PCBA board 131 is a symmetrical convex polygon.

[0045] See Figure 1 and Figure 7 , Figure 1 This is a schematic diagram of PCBA board layout in the existing technology. Figure 7 This is a schematic diagram of the PCBA board layout according to this application. Compared with the prior art, the PCBA board 131 of this application does not require solder points for fixing PCBA components to the end cap and solder points for soldering power lines to the PCBA board. It only has solder points 1311 for soldering Hall lines. The area of ​​the PCBA board 131 can be significantly reduced, thereby reducing material usage. Furthermore, this utility model adopts a symmetrical convex polygon design. During layout, the symmetrical convex polygons can be interlocked to make the arrangement more compact, which can reduce substrate area waste and thus reduce material waste.

[0046] See Figure 2-10This utility model also provides a motor, comprising a housing 2 with one open end, an end cover assembly 1 installed at the open end of the housing 2, and a stator assembly 3 and a rotor assembly 4 disposed within the housing 2. One end of the rotor assembly 4 is connected to the end cover assembly 1, and the other end extends out of the housing 2 to output mechanical energy. The end cover assembly 1 includes: an end cover 11, a motor terminal 12 and a PCBA assembly 13 installed on the end cover 11, and a power cord assembly 14. The end cover 11 includes a first end 112 facing the inside of the motor and a second end 113 facing the outside of the motor. The motor terminal 12 includes a plug... The insert 121 is provided, wherein the motor terminal 12 extends from the first end 112 through the end cover 11 and then extends out of the insert 121 at the second end 113; the power cord assembly 14 includes a quick-connect terminal 141, and the power cord assembly 14 is electrically connected and fixed to the motor terminal 12 by the insertion of the quick-connect terminal 141 and the insert 121; the PCBA assembly 13 includes a PCBA board 131 and Hall wires 132 soldered on the PCBA board 131, and the PCBA board 131 is fixedly installed on the second end 113 of the end cover 11.

[0047] The power cord of the motor end cover assembly of this utility model is not integrated on the PCBA assembly, but is connected to the motor terminal through a quick-connect structure. This eliminates the need for soldering, reducing the risk of short circuits caused by exposed wire cores due to heat shrinkage of the rubber. The PCBA board of this utility model reduces the space required to integrate the power cord on the PCBA board, and the area of ​​the PCBA board can be made smaller, which can reduce material usage and save costs.

[0048] See Figure 11-12 When assembling the motor of this utility model, the components installed at the first end 112, such as the motor terminal 12, are first installed on the end cover 11. The Hall wire 132 is soldered onto the PCBA board 131 to obtain the PCBA assembly 13. Then, the end cover 11 is installed on the housing 2. Finally, the PCBA assembly 13 is installed on the end cover 11 and the power cord assembly 14 is plugged in to complete the motor installation.

[0049] Preferably, the end cap 11 has a buckle 111 at the second end 113, and the PCBA board 131 is fixed to the end cap 11 by the buckle 111. This invention uses a buckle on the end cap to fix the PCBA assembly instead of soldering, reducing the soldering process, preventing damage to other components due to the high temperature during soldering, reducing process complexity, enabling rapid disassembly of the PCBA assembly without irreversible damage, allowing components to be reused, and reducing waste. This invention reduces the number of solder points used to fix the PCBA assembly to the end cap, further reducing the area of ​​the PCBA board, reducing material usage, and saving costs.

[0050] Preferably, the buckle 111 includes a fixed buckle 1111 and a movable buckle 1112.

[0051] Preferably, the buckle 111 includes two fixed buckles 1111 and one movable buckle 1112.

[0052] Furthermore, the end cap assembly 1 of this utility model also includes an induction magnetic ring 15, which is installed between the end cap 11 and the PCBA assembly 13. One end of the rotor assembly 4 extends out of the housing 2 to output mechanical energy, and the other end passes through the end cap 11 and is connected to the induction magnetic ring 15.

[0053] Preferably, the outer contour of the PCBA board 131 is a symmetrical convex polygon.

[0054] The end cap assembly structure of this utility model is applicable to brushed motors, but is not limited to brushed motors.

[0055] In summary, the power cord of the end cap assembly and motor of this utility model is not integrated on the PCBA assembly, but is connected to the motor terminal through a quick-connect structure, eliminating the need for soldering and reducing the risk of short circuits caused by exposed wire cores due to heat shrinkage of the rubber. The PCBA board of this utility model reduces the space required to integrate the power cord on the PCBA board, and the area of ​​the PCBA board can be made smaller, which can reduce material usage and save costs.

[0056] As described above, those skilled in the art can make various other corresponding changes and modifications based on the technical solution and concept of this utility model, and all such changes and modifications should fall within the protection scope of the appended claims of this utility model.

Claims

1. An end cap assembly (1) characterised in that, include: The end cover (11), motor terminals (12) and PCBA assembly (13) mounted on the end cover (11), and power cord assembly (14); the end cover (11) includes a first end (112) facing the inside of the motor and a second end (113) facing the outside of the motor, the motor terminal (12) includes a insert (121), the motor terminal (12) passes through the end cover (11) from the first end (112) and extends out of the insert (121) at the second end (113). 21) The power cord assembly (14) includes a quick-connect terminal (141), and the power cord assembly (14) is electrically connected and fixed to the motor terminal (12) by the quick-connect terminal (141) and the insert (121); the PCBA assembly (13) includes a PCBA board (131) and a Hall wire (132) soldered on the PCBA board (131), and the PCBA board (131) is fixedly installed on the second end (113) of the end cover (11).

2. An end cap assembly (1) according to claim 1, characterized in that The end cap (11) has a buckle (111) at the second end (113), and the PCBA board (131) is fixed on the end cap (11) by the buckle (111).

3. An end cap assembly (1) as claimed in claim 2, characterised in that, The buckle (111) includes a fixed buckle (1111) and a movable buckle (1112).

4. An end cap assembly (1) as claimed in claim 1, characterized in that The end cap assembly (1) further includes a sensing magnetic ring (15), which is installed between the end cap (11) and the PCBA assembly (13).

5. An end cap assembly (1) as claimed in claim 1, characterized in that, The outer contour of the PCBA board (131) is a symmetrical convex polygon.

6. An electric machine comprising a housing (2) having an open end, an end cap assembly (1) mounted to the open end of the housing (2), and a stator assembly (3) and a rotor assembly (4) disposed within the housing (2), the rotor assembly (4) extending out of the housing (2) at one end to output mechanical energy; characterized by, The end cap assembly (1) includes: an end cap (11), a motor terminal (12) and a PCBA assembly (13) mounted on the end cap (11), and a power cord assembly (14); the end cap (11) includes a first end (112) facing the inside of the motor and a second end (113) facing the outside of the motor; the motor terminal (12) includes a insert (121); the motor terminal (12) passes through the end cap (11) from the first end (112) and extends out from the second end (113). The insert (121) and the power cord assembly (14) include quick-connect terminals (141). The power cord assembly (14) is electrically connected and fixed to the motor terminal (12) by inserting the quick-connect terminals (141) and the insert (121). The PCBA assembly (13) includes a PCBA board (131) and Hall wires (132) soldered on the PCBA board (131). The PCBA board (131) is fixedly installed on the second end (113) of the end cover (11).

7. The electric machine of claim 6, wherein, The end cap (11) has a buckle (111) at the second end (113), and the PCBA board (131) is fixed on the end cap (11) by the buckle (111).

8. The electric machine of claim 7, wherein, The buckle (111) includes a fixed buckle (1111) and a movable buckle (1112).

9. The electric machine of claim 6, wherein, The end cap assembly (1) also includes an induction magnetic ring (15), which is installed between the end cap (11) and the PCBA assembly (13). One end of the rotor assembly (4) extends out of the housing (2) to output mechanical energy, and the other end passes through the end cap (11) and is connected to the induction magnetic ring (15).

10. The electric machine of claim 6, wherein, The outer contour of the PCBA board (131) is a symmetrical convex polygon.

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