Hall sensor mounting structure of direct current motor

Abstract

The utility model discloses a Hall sensor mounting structure of a direct current motor, which is used for mounting a Hall sensor and a circuit board on a motor stator, and comprises a concave platform arranged along the circumferential direction of the inner ring of the motor stator and a sensor mounting plate arranged on the end surface of the inner ring of the motor stator, a fixed seat is arranged above the sensor mounting plate, and the Hall sensor is arranged in the fixed seat in a penetrating manner; an annular groove is formed in the concave table, the circuit board is arranged in the annular groove, and the Hall sensor bottom foot is electrically connected with the circuit board; the annular groove is fixedly connected with the sensor mounting plate, a plurality of notches are formed in the fixed connection position of the annular groove and the sensor mounting plate, a plurality of buckles matched with the notches are arranged on the motor stator, and the buckles are detachably connected with the notches. The device has the advantages of being convenient to install, good in stability and convenient to maintain and replace.

Description

Technical Field

[0001] The utility model belongs to the field of motors, and in particular relates to a Hall sensor installation structure of a DC motor. Background Art

[0002] In brushless DC motors, Hall sensors are typically used to detect rotor position signals, altering the current phase sequence in the stator windings. This interaction with the rotor's permanent magnets generates electromagnetic torque, thereby changing the rotor's motion and achieving speed regulation. The mounting method of the Hall sensor directly impacts the motor's performance and stability. Furthermore, Hall sensors are sensitive to environmental factors such as temperature, humidity, and vibration. In harsh operating environments, these factors can degrade or even damage the sensor, impacting the motor's stability and reliability. With continuous technological advancements, new Hall sensors and mounting methods are emerging. However, existing mounting structures for Hall sensors in DC motors still present issues such as inconvenient installation, sensor misalignment during installation, poor stability, and high maintenance costs. Utility Model Content

[0003] The purpose of the utility model is to provide a Hall sensor installation structure for a DC motor, which has the advantages of easy installation, good stability, and easy maintenance and replacement.

[0004] The technical solution of the utility model is: a Hall sensor mounting structure for a DC motor, which is used to install the Hall sensor and a circuit board on the motor stator, including a concave platform arranged along the circumferential direction of the inner ring of the motor stator and a sensor mounting plate arranged on the end face of the inner ring of the motor stator, a fixing seat is provided above the sensor mounting plate, and the Hall sensor is inserted into the fixing seat; an annular groove is provided on the concave platform, the circuit board is arranged in the annular groove, and the bottom foot of the Hall sensor is electrically connected to the circuit board; the annular groove is fixedly connected to the sensor mounting plate, and a plurality of notches are provided at the fixed connection between the annular groove and the sensor mounting plate, and a plurality of clips matching the notches are provided on the motor stator, and the clips and notches are detachably connected.

[0005] In the aforementioned Hall sensor mounting structure of the DC motor, the sensor mounting plate is an arc-shaped plate arranged along the end surface of the inner ring of the motor stator.

[0006] In the aforementioned Hall sensor mounting structure for a DC motor, a plurality of fixing holes are provided on the outer side of the sensor mounting plate.

[0007] In the aforementioned Hall sensor mounting structure for a DC motor, the fixing holes are fixedly connected via bolts.

[0008] In the aforementioned Hall sensor mounting structure of the DC motor, a groove cover is provided above the annular groove.

[0009] In the aforementioned Hall sensor mounting structure for a DC motor, both ends of the fixing seat are fixed to the outer edge of the sensor mounting plate via bolts.

[0010] In the aforementioned Hall sensor mounting structure for a DC motor, both ends of the circuit board are fixed in the annular groove by bolts.

[0011] In the aforementioned Hall sensor installation structure for a DC motor, the fixing seat is made of rubber insulating material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention provides sensor mounting plates on both sides of the motor stator, and provides a fixing seat on the sensor mounting plates, so that the Hall sensor can be stably fixed on the motor stator. At the same time, the circuit board is provided in the annular groove to facilitate the connection between the Hall sensor and the circuit board. The Hall sensor of the present invention is stably fixed on the motor stator through the fixing seat, which can reduce measurement errors caused by vibration or improper installation. In addition, the fixing seat is made of rubber insulating material, which effectively prevents circuit short circuits and improves the safety of the motor. The present invention can easily disassemble and install the entire installation structure through the detachable connection method of the buckle and the notch, making the maintenance and replacement of the Hall sensor and the circuit board simpler and faster. The present invention ensures the stability of the motor during operation through the stable Hall sensor mounting structure, reducing motor operation problems caused by improper sensor installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the main view of the utility model;

[0015] Figure 2 This is an internal view of the groove of the present invention.

[0016] The markings in the accompanying drawings are: 1. Motor stator; 2. Circuit board; 3. Hall sensor; 4. Concave platform; 5. Sensor mounting plate; 6. Fixed seat; 7. Annular groove; 8. Notch; 9. Buckle; 10. Fixing hole; 11. Groove cover. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] Embodiment: A Hall sensor mounting structure for a DC motor, comprising: Figure 1-2As shown, it is used to install the Hall sensor 3 and the circuit board 2 on the motor stator 1, including a concave platform 4 set along the circumferential direction of the inner ring of the motor stator 1 and a sensor mounting plate 5 set on the end face of the inner ring of the motor stator 1. Figure 1 As shown, the sensor mounting plate 5 is an arc-shaped plate arranged along the inner ring end surface of the motor stator 1. A fixing seat 6 is provided above the sensor mounting plate 5, and the Hall sensor 3 is inserted into the fixing seat 6. Figure 2 As shown, an annular groove 7 is provided on the concave platform 4, and the circuit board 2 is disposed within the annular groove 7. The base of the Hall sensor 3 is electrically connected to the circuit board 2 through welding or other reliable connection methods, transmitting the signal detected by the sensor to the circuit board 2 for processing. This mounting structure utilizes sensor mounting plates 5 disposed on both sides of the motor stator 1, and a fixing seat 6 disposed on the sensor mounting plates 5, so that the Hall sensor 3 can be stably fixed to the motor stator 1, thereby reducing measurement errors caused by vibration or improper installation. At the same time, the circuit board 2 is disposed within the annular groove 7, facilitating the connection between the Hall sensor 3 and the circuit board 2. The annular groove 7 is fixedly connected to the sensor mounting plate 5, and three notches 8 are provided at the fixed connection. The motor stator 1 is provided with three clips 9 that mate with the notches 8. The clips 9 and notches 8 are detachably connected, making this connection method convenient for installation and removal. This mounting structure can be installed on both end faces of the motor stator as needed, and multiple mounting structures can be installed in an arc along the inner ring of the motor stator. The outer side of the sensor mounting plate 5 is provided with three fixing holes 10, and the fixing holes 10 are fixedly connected to the fixing holes 10 on the sensor mounting plate 5 on the other end face of the motor stator 1 by bolts. Figure 1 As shown, the stability and reliability of the entire installation structure are enhanced. The two ends of the fixing seat 6 are fixed to the outer ring edge of the sensor mounting plate 5 by bolts. This fixing method can ensure the stability of the fixing seat 6 and the precise installation position of the Hall sensor 3. At the same time, the two ends of the circuit board 2 are fixed in the annular groove 7 by bolts to improve the installation stability of the circuit board 2. The stability of the motor during operation is ensured by the stable installation structure of the Hall sensor 3, and the motor operation problems caused by improper installation of the sensor are reduced. Preferably, in order to protect the circuit board 2 and prevent dust and other impurities from entering the annular groove 7, the device is also provided with a groove cover 11 above the annular groove 7. The groove cover 11 can be fixed to the annular groove 7 by bolts or other fixing methods. Preferably, the fixing seat 6 is made of rubber insulating material to ensure the stable installation of the Hall sensor 3 and prevent electrical interference, effectively prevent circuit short circuit, and improve the safety of the motor.

[0019] How it works

[0020] First, place the sensor mounting plate 5 on the inner ring end face of the motor stator 1, ensuring a tight fit. If mounting is required on both ends of the motor stator 1, repeat this step to install the sensor mounting plate 5 on the other end face. Next, place the mounting base 6 on the outer edge of the sensor mounting plate 5. Insert the Hall sensor 3 into the mounting base 6. Bolt both ends of the mounting base 6 to the sensor mounting plate 5, ensuring that the mounting base 6 is secure and does not wobble. Next, insert the annular groove 7 into the recessed platform 4 on the inner ring of the motor stator 1. Place the circuit board 2 in the annular groove 7, ensuring good contact between the circuit board 2 and the base of the Hall sensor 3 and a secure connection between the base of the Hall sensor 3 and the circuit board 2. Use welding or other reliable connection methods. Secure the circuit board 2 in the annular groove 7 using bolts or other fixing methods. Place the groove cover 11 on top of the annular groove 7, ensuring that the cover mates with the annular groove 7. Secure the groove cover 11 to the annular groove 7 using bolts or other fixing methods. Locate the three notches 8 where the annular groove 7 and the sensor mounting plate 5 are fixed. Align the three clips 9 on the motor stator 1 with the notches 8, ensuring that the clips 9 are securely fastened to the notches 8. If sensor mounting plates 5 are installed on both ends of the motor stator 1, use bolts through the fixing holes 10 to secure the sensor mounting plates 5 together.

[0021] In summary, the utility model has the advantages of easy installation, good stability, and easy maintenance and replacement.

Claims

1. A Hall sensor mounting structure for a DC motor, used for mounting a Hall sensor (3) and a circuit board (2) on a motor stator (1), characterized in that: The invention comprises a concave platform (4) arranged along the circumferential direction of the inner ring of the motor stator (1) and a sensor mounting plate (5) arranged on the end surface of the inner ring of the motor stator (1); a fixing seat (6) is provided above the sensor mounting plate (5); the Hall sensor (3) is inserted into the fixing seat (6); an annular groove (7) is provided on the concave platform (4); the circuit board (2) is arranged in the annular groove (7); the bottom foot of the Hall sensor (3) is electrically connected to the circuit board (2); the annular groove (7) is fixedly connected to the sensor mounting plate (5); a plurality of notches (8) are provided at the fixed connection between the annular groove (7) and the sensor mounting plate (5); a plurality of buckles (9) matching the notches (8) are provided on the motor stator (1); the buckles (9) and the notches (8) are detachably connected.

2. The Hall sensor mounting structure for a DC motor according to claim 1, wherein: The sensor mounting plate (5) is an arc-shaped plate arranged along the inner ring end surface of the motor stator (1).

3. The Hall sensor mounting structure for a DC motor according to claim 1, wherein: A plurality of fixing holes (10) are provided on the outer side of the sensor mounting plate (5).

4. The Hall sensor mounting structure for a DC motor according to claim 3, wherein: The fixing holes (10) are fixedly connected via bolts.

5. The Hall sensor mounting structure for a DC motor according to claim 1, wherein: A groove cover plate (11) is provided above the annular groove (7).

6. The Hall sensor mounting structure for a DC motor according to claim 1, wherein: The two ends of the fixing seat (6) are fixed to the outer edge of the sensor mounting plate (5) via bolts.

7. The Hall sensor mounting structure for a DC motor according to claim 1, wherein: The end of the circuit board (2) is fixed in the annular groove (7) by means of bolts.

8. The Hall sensor mounting structure for a DC motor according to claim 1, wherein: The fixing seat (6) is made of rubber insulating material.

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