Hall motor of end cover integrated circuit board

Abstract

The utility model discloses a Hall motor of an end cover integrated circuit board, comprising a motor assembly, a motor shaft and an end cover; the Hall assembly comprises a magnetic ring and a circuit board, the circuit board is arranged on the outer side of the end cover, the motor shaft is sleeved with the magnetic ring, and the circuit board is located between the end cover and the magnetic ring; and the carbon brush assembly comprises a terminal and a carbon brush, the carbon brush is a small brush block, and the terminal penetrates through the end cover and then is fixedly connected with the circuit board. The beneficial effects of the utility model are that the noise is reduced through the miniaturized carbon brush design, the end cover structure is optimized to directly fix the Hall circuit board, an independent support is omitted through integrated installation, and the installation process is simplified.

Description

Technical Field

[0001] This utility model relates to the technical field of motors, and more particularly to a Hall motor with an integrated end cover and circuit board. Background Technology

[0002] In traditional motors, the friction between carbon brushes and the commutator easily generates noise, and the large size of carbon brushes limits the overall size of the motor. Furthermore, the installation of Hall effect sensors typically requires additional brackets or complex wiring, affecting assembly efficiency and reliability. For example, Hall effect circuit boards are often fixed with independent brackets, resulting in structural redundancy. Therefore, there is an urgent need for an improved Hall effect motor that can achieve carbon brush noise reduction through structural optimization, and allows Hall effect sensors to be directly mounted on the end cover, eliminating the need for independent brackets and simplifying the installation process. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method to reduce noise by optimizing the carbon brush size, the installation method between the Hall effect components and the end caps.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a Hall motor with an integrated circuit board in the end cover, comprising a motor assembly including a motor shaft and an end cover; the Hall assembly including a magnetic ring and a circuit board, the circuit board being disposed on the outside of the end cover, the magnetic ring being sleeved on the motor shaft, and the circuit board being located between the end cover and the magnetic ring; a carbon brush assembly including a terminal and a carbon brush, the carbon brush being a small brush block, the terminal passing through the end cover and being fixedly connected to the circuit board.

[0005] Preferably, the end cap includes a support block, a positioning block, and a first fixing hole protruding from the outside of the end cap; after the circuit board is fitted onto the positioning block, it abuts against and is supported by the support block, and is aligned and fixed by the first fixing hole and the second fixing hole on the circuit board.

[0006] Preferably, the end cap includes a limiting groove, a slot, and a channel disposed on the inner side; the channel passes through the end cap, and the terminal passes through the channel and is limited by the limiting groove and the slot.

[0007] Preferably, the terminal includes a body, a bent portion, and a spring piece; the bent portion is the connection between the body and the spring piece, the body passes through the channel, the bent portion is located within the limiting groove for limiting, and the carbon brush is fixed to the spring piece.

[0008] Preferably, the terminal includes a locking pin that slides into and is limited within the slot.

[0009] Preferably, the channel is provided with a stop block, and the terminal is provided with a protrusion that abuts against and limits the stop block.

[0010] Preferably, the Hall component further includes a Hall sensor and a wiring hole disposed on the end cap and near the magnetic ring.

[0011] Preferably, the motor assembly includes a stator and a rotor disposed within a housing.

[0012] Preferably, the motor assembly includes a front cover, a bearing, and a gear; the gear is mounted on the motor shaft and extends through the portion of the front cover, and the bearing is used for axial mounting of the front cover and the motor shaft.

[0013] Preferably, the terminal passes through a notch provided on the end cap and is then soldered to the circuit board.

[0014] The advantages of this invention are: noise reduction through miniaturized carbon brush design, optimized end cap structure for direct fixation of Hall circuit board, integrated installation to eliminate the need for independent brackets, and simplified installation process. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the structure of the Hall motor end cover described in this utility model;

[0017] Figure 3 This is a schematic diagram of the circuit board structure in the Hall motor described in this utility model;

[0018] Figure 4 This is a schematic diagram of the carbon brush assembly in the Hall motor described in this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting groove, slot, and channel in the Hall motor described in this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the terminal block of the Hall motor described in this utility model;

[0021] Figure 7 This is a schematic diagram of the stator and rotor in the Hall motor described in this utility model;

[0022] Figure 8 This is a schematic diagram of the front cover, shaft seat, and gear in the Hall motor described in this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0024] Example 1

[0025] Reference Figure 1-8 The illustration shows a Hall motor with an integrated circuit board at the end cap proposed in this embodiment. It reduces noise through a miniaturized carbon brush design, optimizes the end cap structure to directly fix the Hall circuit board, and simplifies the installation process. The Hall motor includes a motor assembly 100, a Hall assembly 200, and a carbon brush assembly 300. The motor assembly 100 is used for the normal operation of the motor, the Hall assembly 200 is used for reading the Hall signal of the motor, and the carbon brush assembly 300 is used to cooperate with the commutator to change the current direction.

[0026] Furthermore, to achieve a direct fixed connection of the Hall effect sensor 200 to the end cover 102, in this embodiment, the motor assembly 100 includes a motor shaft 101 and an end cover 102; the Hall effect sensor 200 includes a magnetic ring 201 and a circuit board 202, the circuit board 202 is disposed on the outside of the end cover 102, the magnetic ring 201 is sleeved on the motor shaft 101, and the circuit board 202 is located between the end cover 102 and the magnetic ring 201; the carbon brush assembly 300 includes a terminal 301 and a carbon brush 302, the carbon brush 302 is a small brush block, and the terminal 301 passes through the end cover 102 and is fixedly connected to the circuit board 202. It should be understood that the small brush block refers to the carbon brush 302 being smaller than the conventional size, and the noise reduction effect can be achieved by reducing the contact area.

[0027] In a preferred embodiment, the end cap 102 and the circuit board 202 are installed as follows: the end cap 102 includes a support block 102a, a positioning block 102b, and a first fixing hole 102c protruding from the outside of the end cap 102; after the circuit board 202 is fitted onto the positioning block 102b, it abuts against the support block 102a for support, and is aligned and fixed by the first fixing hole 102c and the second fixing hole 202a on the circuit board 202. After alignment, it can be installed by fixing screws.

[0028] Furthermore, in order to achieve positioning between the terminal 301 and the end cover 102, the end cover 102 includes a limiting slide groove 102d, a slot 102e and a channel 102f disposed on the inner side; wherein the channel 102f penetrates the end cover 102, and the terminal 301 passes through the channel 102f and is limited by the limiting slide groove 102d and the slot 102e.

[0029] Terminal 301 includes a main body 301a, a bent portion 301b, a spring piece 301c, a locking pin 301d, and a protrusion 301e. The bent portion 301b connects the main body 301a and the spring piece 301c. The main body 301a passes through the channel 102f, and the bent portion 301b is positioned within the limiting groove 102d. The carbon brush 302 is fixed to the spring piece 301c. The locking pin 301d slides into the locking groove 102e for positioning. A stop block 102f-1 is provided within the channel 102f, and the protrusion 301e abuts against and is positioned by the stop block 102f-1.

[0030] In a preferred embodiment, the terminal 301 passes through the notch 202b provided on the end cover 102 and is soldered to the circuit board 202.

[0031] Furthermore, in this embodiment, the Hall component 200 also includes a Hall sensor 203 and a wiring hole 204 disposed on the end cover 102 and near the magnetic ring 201. The motor component 100 includes a front cover 106, a shaft seat 107, and a gear 108; wherein the gear 108 is mounted on the motor shaft 101 and extends through the portion of the front cover 106, and the shaft seat 107 is used for axially movable mounting of the front cover 106 and the motor shaft 101.

[0032] The assembly process of the Hall motor in this embodiment is as follows:

[0033] Motor assembly 100 installation: The rotor 105 is installed into the stator 104. The two ends of the motor shaft 101 are supported by the front cover 106 and the shaft seat 107. The gear 108 is installed on the extended end of the motor shaft 101.

[0034] Hall effect assembly 200 installation: The magnetic ring 201 is fitted onto the motor shaft 101. After the circuit board 202 is positioned by the positioning block 102b and the support block 102a, it is fixed with screws passing through the first fixing hole 102c and the second fixing hole 202a. The Hall sensor 203 is mounted on the side of the circuit board 202 near the magnetic ring 201.

[0035] Carbon brush assembly 300 installation: The main body 301a of terminal 301 passes through channel 102f, the bent part 301b is embedded in the limiting slide groove 102d, the locking pin 301d is engaged in the locking slot 102e, and the protrusion 301e abuts against the stop block 102f-1 for limiting. Carbon brush 302 is pressed against the commutator by spring piece 301c.

[0036] Electrical connection: Terminal 301 passes through notch 202b and is soldered to circuit board 202 to complete power and signal transmission.

[0037] In this embodiment, carbon brush noise reduction is achieved by miniaturizing the carbon brush 302 to reduce the friction contact area, and by adjusting the elastic pressure of the spring 301c to achieve low-noise operation.

[0038] Hall effect component integration: The circuit board 202 is directly fixed to the end cover 102, and the magnetic ring 201 is close to the Hall sensor 203 to ensure high signal sensitivity.

[0039] The anti-loosening design of terminal 301: the interference fit between the locking pin 301d and the locking slot 102e, and the mechanical limiting of the protrusion 301e and the stop block 102f-1, provide double protection for the stability of terminal installation.

[0040] It should be noted that the present embodiment aims to miniaturize the carbon brush design and the installation method of the Hall circuit board, which are structural improvements. As for the specific operating principle of the Hall motor, it is a very mature existing technology. For example, how the Hall component 200 reads the Hall signal to accurately control the motor, how the carbon brush component 300 controls the change of the current direction through the operating principle between it and the commutator, the wiring of the circuit board 202 and the electrical connection and operating principle of the various electronic components on it, etc., are all non-essential technical features in this application, and can be implemented by those skilled in the art with reference to the existing technology, so they will not be described in detail here.

[0041] The technical improvement of fixing the Hall effect circuit board 202 to the end cover 102 of the motor includes the following technical optimization effects:

[0042] Firstly, the structure is simplified and compact: space is optimized by directly integrating the circuit board 202 onto the end cover 102, reducing additional mounting brackets or fixing components, making the overall motor structure more compact and saving internal space. Secondly, assembly complexity is reduced: in traditional designs, Hall elements may require separate installation and adjustment, but after being fixed to the end cover 102, the assembly process can be simplified through standardized design, reducing the need for manual intervention.

[0043] Second, the signal detection accuracy and stability are enhanced: this is manifested in the resistance to vibration interference. The end cover 102 is usually rigidly connected to the motor body. The circuit board 202 is fixed here, which can reduce the displacement or poor contact of the Hall sensor 203 caused by vibration during motor operation, thus improving signal stability.

[0044] Thirdly, heat dissipation and reliability are improved: This is reflected in the optimization of the heat dissipation path. The end cover 102 is usually close to the motor housing, and heat can be quickly conducted to the external environment through the metal end cover 102, avoiding the Hall element from degrading or failing due to high temperature.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit the scope of protection of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description and ideas. It is neither necessary nor possible to exhaustively describe all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the technical solution of this utility model should be covered within the scope of protection of the claims of this utility model.

Claims

1. A Hall motor with an end cap integrated circuit board, characterized by: The motor assembly (100) comprises a motor shaft (101) and an end cover (102). The Hall assembly (200) comprises a magnetic ring (201) and a circuit board (202), the circuit board (202) is arranged outside the end cover (102), the magnetic ring (201) is sleeved on the motor shaft (101), and the circuit board (202) is located between the end cover (102) and the magnetic ring (201). The carbon brush assembly (300) comprises a terminal (301) and a carbon brush (302), the carbon brush (302) is a small brush block, and the terminal (301) is fixedly connected with the circuit board (202) after penetrating through the end cover (102). The end cover (102) comprises a supporting block (102a) arranged outside the end cover (102), a positioning block (102b) and a first fixing hole (102c).

2. The Hall motor with an end cap integrated circuit board according to claim 1, characterized in that: The circuit board (202) is supported by the supporting block (102a) after being sleeved on the positioning block (102b), and is fixed by aligning the first fixing hole (102c) with a second fixing hole (202a) on the circuit board (202). The end cover (102) comprises a limiting sliding groove (102d), a clamping groove (102e) and a channel (102f) arranged inside; 3. The Hall motor with an end cap integrated circuit board according to claim 1 or 2, characterized in that: The channel (102f) penetrates through the end cover (102), and the terminal (301) is limited by the limiting sliding groove (102d) and the clamping groove (102e) after penetrating through the channel (102f). The terminal (301) comprises a main body (301a), a bending part (301b) and a spring piece (301c); 4. The Hall motor of claim 3, wherein: The bending part (301b) is the connection part of the main body (301a) and the spring piece (301c), the main body (301a) penetrates through the channel (102f), the bending part (301b) is limited in the limiting sliding groove (102d), and the carbon brush (302) is fixed on the spring piece (301c). The terminal (301) comprises a clamping pin (301d) which is limited in the clamping groove (102e).

5. The Hall motor with an end cap integrated circuit board according to claim 3, characterized in that: The channel (102f) is provided with a stop block (102f-1), and the terminal (301) is provided with a protrusion (301e) which is limited by the stop block (102f-1).

6. The Hall motor of claim 3, wherein: The Hall assembly (200) further comprises a Hall sensor (203) arranged on the end cover (102) and close to one side of the magnetic ring (201), and a wiring hole (204).

7. A Hall motor with an integrated end cap circuit board according to any one of claims 1, 2 or 4-6, characterized in that: The motor assembly (100) comprises a stator (104) and a rotor (105) arranged in a shell (103).

8. The Hall motor with an end cap integrated circuit board according to claim 7, characterized in that: The motor assembly (100) comprises a front cover (106), a shaft seat (107) and a gear (108); 9. A Hall motor with an end cap integrated circuit board according to any one of claims 1, 2, 4-6 or 8, characterized in that: The gear (108) is installed on the motor shaft (101) and protrudes through the front cover (106), and the shaft seat (107) is used for shaft dynamic installation of the front cover (106) and the motor shaft (101). ​ 10. The Hall motor with an end cap integrated circuit board according to claim 9, characterized in that: The terminal (301) is welded with the circuit board (202) after passing through the gap (202b) provided on the end cover (102).

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