Plastic package direct current motor adaptive to Hall element

Abstract

The utility model discloses a plastic package direct current motor adaptive to a Hall element, which relates to the technical field of motors and comprises a stator assembly, the stator assembly comprises a stator assembly and a plastic package shell, the stator assembly is plastically packaged in the plastic package shell, a plastic package cover plate adaptive to the plastic package shell is mounted on the plastic package shell, and a Hall element is mounted on the plastic package cover plate. The stator assembly comprises a stator assembly installed at the bottom of a plastic package shell, a circuit board is installed at the top end of the plastic package shell through a supporting layer, and a rotor assembly is arranged outside the plastic package shell. The circuit board is at least provided with a Hall element used for measuring the state of the stator or the rotor, the plastic package shell is at least provided with a Hall hole, the Hall element can measure the state of the stator or the rotor through the Hall hole, the overall structure is simple, the sealing and waterproof performance is high, and the maintenance cost is low. And the practicability and application requirements of the motor are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a plastic-encapsulated DC motor adapted to Hall elements. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. With the development of mechanization technology, the application of electric motors is becoming increasingly widespread, and the requirements for precision are becoming increasingly stringent. In industrial control, especially in motor drive applications, speed detection and control often account for a large proportion, frequently requiring the detection of motor speed or speed feedback to form a closed-loop speed control. Existing circuit board and stator assembly designs have poor waterproofing, and the plastic encapsulation process affects the Hall effect sensors' ability to measure the stator or rotor. Utility Model Content

[0003] The purpose of this invention is to provide a plastic-encapsulated DC motor adapted to Hall elements. By providing Hall holes on the inner surface of the plastic-encapsulated housing, the Hall elements can be conveniently used to measure the stator or rotor. The overall structure is simple, the maintenance cost is low, and the practicality and application requirements of the motor are improved.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A plastic-encapsulated DC motor adapted to a Hall element includes a stator assembly, the stator assembly comprising a stator component and a plastic-encapsulated housing, the stator component being plastic-encapsulated within the plastic-encapsulated housing, a matching plastic-encapsulated cover plate being mounted on the plastic-encapsulated housing, the stator component including a stator assembly mounted at the bottom of the plastic-encapsulated housing, a circuit board being mounted on the top of the plastic-encapsulated housing via a support layer, and a rotor assembly being disposed outside the plastic-encapsulated housing, the circuit board having at least one Hall element for measuring the state of the stator or rotor, and the plastic-encapsulated housing having at least one Hall aperture, allowing the Hall element to detect the stator or rotor through the Hall aperture.

[0006] Furthermore, the surface of the plastic-encapsulated housing has three Hall effect holes, and Hall effect elements corresponding to each Hall effect hole are mounted on the circuit board, with the center of the Hall effect element and the center of the Hall effect hole located on the same axis.

[0007] Furthermore, the circumferential spacing between two adjacent Hall elements is the same along the circuit board.

[0008] Furthermore, the surface of the plastic-encapsulated shell is provided with multiple positioning protrusions, and the bottom of the plastic-encapsulated cover plate is provided with multiple positioning grooves that engage with the positioning protrusions.

[0009] The beneficial effects of this utility model are: by encapsulating the stator assembly in a plastic housing, the overall waterproof effect of the motor can be improved; in addition, by opening at least one Hall hole on the inner surface of the plastic housing, the Hall element can easily measure the rotor speed and rotation direction and other motion states. Moreover, the overall structure is simple, easy to disassemble, and has low maintenance costs, which improves the practicality and application requirements of the motor. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the encapsulated DC motor of this application;

[0012] Figure 2 This is a cross-sectional view of the encapsulated DC motor of this application;

[0013] Figure 3 This is a schematic diagram of the circuit board;

[0014] Figure 4 This is a schematic diagram of a plastic-encapsulated casing. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0017] See attached document Figures 1-4According to an embodiment of the present invention, a plastic-encapsulated DC motor with Hall element adaptation includes a stator assembly, which includes a stator component 1 and a plastic-encapsulated housing 2. The stator component 1 is plastic-encapsulated within the plastic-encapsulated housing 2, and a plastic-encapsulated cover plate 4 adapted thereto is mounted on the plastic-encapsulated housing 2. The stator component 1 includes a stator assembly 1a mounted at the bottom of the plastic-encapsulated housing 2. A circuit board 1b is mounted on the top of the plastic-encapsulated housing 1 via a support layer. The circuit board 1b has at least one Hall element 7 for measuring the state of the stator or rotor. A rotor assembly 6 is located outside the plastic-encapsulated housing 2. By plastic-encapsulating the stator assembly within the plastic-encapsulated housing 2 and using the plastic-encapsulated cover plate 4, the overall waterproof performance of the motor can be improved.

[0018] Because the stator assembly is encapsulated within the plastic housing 2, the Hall element 7 cannot directly detect the status of the stator or rotor. This application provides at least one Hall aperture 8 on the plastic housing 2, allowing the Hall element 7 to measure the motion status of the stator or rotor, such as its rotational speed, direction of rotation, and starting position, through the Hall aperture 8. The Hall aperture 8 can be square or circular in shape.

[0019] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, preferably, the surface of the plastic-encapsulated housing 2 has three Hall effect holes 8, and the circuit board 1b is equipped with Hall elements 7 corresponding to each of the Hall effect holes 8. The centers of the Hall elements 7 and the Hall effect holes 8 are located on the same axis, so the state of the stator or rotor can be accurately measured by the Hall elements 7 mounted on the circuit board 1b. The circumferential spacing between two adjacent Hall effect detection elements 7 is the same along the circuit board 1b.

[0020] In one embodiment of this utility model, such as Figure 2 As shown, the surface of the plastic-encapsulated housing 2 is provided with multiple positioning protrusions 10, and the bottom of the plastic-encapsulated cover plate 4 is provided with multiple positioning grooves 11 that fit into the positioning protrusions 10. This improves the sealing performance of the internal environment of the plastic-encapsulated housing 2, and at the same time facilitates the assembly personnel to quickly complete the connection between the plastic-encapsulated housing 2 and the plastic-encapsulated cover plate 4, making installation and disassembly convenient.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic-sealed direct current motor with Hall element, comprising a stator assembly, the stator assembly comprising a stator component (1) and a plastic-sealed shell (2), the stator component (1) being plastic-sealed in the plastic-sealed shell (2), a plastic-sealed cover plate (4) being mounted on the plastic-sealed shell (2) in a matching manner, the stator component (1) comprising a stator assembly (1a) mounted on the bottom of the plastic-sealed shell (2), the top of the plastic-sealed shell (2) being provided with a circuit board (1b) through a support layer, the plastic-sealed shell (2) being externally provided with a rotor assembly (6), characterized in that: the circuit board (1b) is provided with at least one Hall element (7) for measuring the state of the stator or rotor, and the plastic-sealed shell (2) is provided with at least one Hall hole (8) so that the Hall element (7) can detect the stator or rotor through the Hall hole (8). The plastic-sealed shell (2) is provided with three Hall holes (8), the circuit board (1b) is provided with Hall elements (7) corresponding to the Hall holes (8) in a one-to-one manner, and the Hall elements (7) and the centers of the Hall holes (8) are located on the same axis.

2. The molded DC motor adapted for Hall elements according to claim 1, wherein The circumferential spacing between two adjacent Hall elements (7) along the circuit board (1b) is the same.

3. The molded DC motor adapted for Hall elements according to claim 2, wherein The surface of the plastic-sealed shell (2) is provided with a plurality of positioning protrusions (10), and the bottom of the plastic-sealed cover plate (4) is provided with a plurality of positioning grooves (11) embedded with the positioning protrusions (10).

4. The molded DC motor adapted for Hall elements according to claim 1, wherein ​

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