Brush stepping motor

Abstract

The utility model discloses a brush stepping motor, and relates to the technical field of motors. The two ends of the motor rotor are matched with the ball bearings respectively, the motor rotor is arranged in the motor shell, the commutator ring is installed on the motor rotor, commutator contacts are further installed in the motor shell, the commutator contacts are matched with the commutator ring, and a PCB with a Hall sensor is fixed to the probe shell through epoxy resin adhesive and first self-tapping screws. The positioning plunger is sleeved with a plunger spring, the positioning plunger is fixed in the execution cover through a second self-tapping screw, the terminal cover, the electric brush spring and the electric brush are all inserted into the execution cover, the sealing element is fixed on the bearing cover through a sealing element fixer, and the bearing cover is internally matched with a ball bearing through a spring washer. The interior of the groove of the motor shell is coated with silicone sealant, and the hot pile is heated into the motor shell. The device is reasonable in structural design, convenient and reliable to install, capable of achieving accurate control, high in operation efficiency and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a brushed stepper motor. Background Technology

[0002] Stepper motors are widely used in electric motors and generators due to their compact structure, high power density, high efficiency, and significant energy-saving benefits. In recent years, the industrial sector has seen an increasing demand for equipment that directly drives loads using stepper motors. The widespread application of these direct-drive stepper motor devices will generate immeasurable energy savings. However, existing stepper motors suffer from drawbacks such as poor control precision and complex structure. Therefore, this invention designs a brushed stepper motor with a simple structure and high control precision. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a brushed stepper motor with reasonable structural design, convenient and reliable installation, precise control, high operating efficiency and strong practicality.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a brushed stepper motor, comprising ball bearings, a motor housing, a motor rotor, a commutator ring, commutator contacts, a probe housing, a PCB with a Hall sensor, a first self-tapping screw, epoxy resin adhesive, a positioning plunger, a plunger spring, a second self-tapping screw, an actuator cover, a terminal cover, a brush spring, a brush, a bearing cover, a seal, a seal retainer, a spring washer, silicone sealant, welding wire, a screw cover, and a lead screw. Both ends of the motor rotor are respectively fitted with ball bearings. The motor rotor is housed within the motor housing. The commutator ring is mounted on the motor rotor. A commutator is also installed within the motor housing. The contacts, commutator contacts, and commutator rings are fitted together. The probe housing is fixed to the PCB with the Hall sensor by epoxy resin adhesive and a first self-tapping screw. A plunger spring is fitted onto the positioning plunger, and the positioning plunger is fixed inside the execution cover by a second self-tapping screw. The terminal cover, brush spring, and brush are all inserted into the execution cover. The seal is fixed to the bearing cover by a seal retainer. The bearing cover is fitted to the ball bearing by a spring washer. The groove of the motor housing is coated with silicone sealant and the heat pile is heated into the motor housing. The sensor housing is welded into the cavity of the motor housing by welding wire. The screw cover is pressed onto the lead screw, and the lead screw is inserted into the motor housing and connected to the motor rotor.

[0005] Preferably, the lead screw is coated with grease.

[0006] Preferably, the actuator cover is provided with PIN A, PIN B, PIN C, PIN D, and PIN F; representing the 5V reference pin, low reference pin, EGR valve position signal pin, EGR motor high control pin, and EGR motor low control pin, respectively.

[0007] The beneficial effects of this utility model are as follows: This utility model has a compact structure, is easy and reliable to install, and achieves precise control of the motor through the setting of PIN A, PIN B, PIN C, PIN D, and PIN F; the use of ball bearings and grease reduces friction and improves the motor's operating efficiency; high-precision position control is achieved through the cooperation of the lead screw and positioning plunger, making it suitable for applications requiring precise position adjustment; it is durable, has a long lifespan, high accuracy, powerful functions, high reliability, and strong practicality. Attached Figure Description

[0008] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0009] Figure 1 This is an exploded view of the present invention;

[0010] Figure 2 This is the front view of the present invention;

[0011] Figure 3 for Figure 2 Sectional view along axis AA;

[0012] Figure 4 for Figure 2 Enlarged schematic diagram of part B. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] Reference Figure 1-4This specific embodiment adopts the following technical solution: a brushed stepper motor, including a ball bearing 1, a motor housing 2, a motor rotor 3, a commutator ring 4, commutator contacts 5, a probe housing 6, a PCB with a Hall sensor 7, a first self-tapping screw 8, epoxy resin adhesive 9, a positioning plunger 10, a plunger spring 11, a second self-tapping screw 12, an actuator cover 13, a terminal cover 14, a brush spring 15, a brush 16, a bearing cover 17, a seal 18, a seal retainer 19, a spring washer 20, silicone sealant 21, welding wire 22, a screw cover 23, and a lead screw 24. The two ends of the motor rotor 3 are respectively engaged with the ball bearing 1. The motor rotor 3 is disposed inside the motor housing 2. The commutator ring 4 is mounted on the motor rotor 3. The commutator contacts 5 are also installed inside the motor housing 2. Contact 5 engages with commutator ring 4. Probe housing 6 is fixed to PCB 7 with Hall sensor by epoxy resin adhesive 9 and first self-tapping screw 8. Positioning plunger 10 is fitted with plunger spring 11. Positioning plunger 10 is fixed in execution cover 13 by second self-tapping screw 12. Terminal cover 14, brush spring 15, and brush 16 are all inserted into execution cover 13. Seal 18 is fixed to bearing cover 17 by seal retainer 19. Bearing cover 17 engages with ball bearing 1 by spring washer 20. Silicone sealant 21 is coated in the groove of motor housing 2 and heats the hot pile into the motor housing. Sensor housing is welded to the cavity of motor housing 2 by welding wire 22. Screw cover 23 is pressed onto lead screw 24. Lead screw 24 is inserted into motor housing 2 and connected to motor rotor 3.

[0015] It is worth noting that the lead screw 24 is coated with grease 25.

[0016] In addition, the actuator cover 13 is provided with PIN A, PIN B, PIN C, PIN D, and PIN F; which respectively represent the 5V reference pin, low reference pin, EGR valve position signal pin, EGR motor high control pin, and EGR motor low control pin.

[0017] The installation steps for this specific implementation method are as follows:

[0018] 1. Press the ball bearing into the motor housing;

[0019] 2. Assemble the ball bearings onto the mating diameter of the motor rotor;

[0020] 3. Insert the motor rotor into the motor housing, place the commutator ring on the motor rotor, and heat the hot pile to the desired position.

[0021] 4. Place the commutator contacts onto the motor housing. Apply pressure to compress the wiper arm and weld the commutator contacts to the motor housing;

[0022] 5. Apply epoxy resin adhesive to the probe housing. Align the PCB assembly with the probe housing and secure it with threaded screws;

[0023] 6. Place the plunger spring, positioning plunger, and plunger housing assembly into the actuator cover and secure them with threaded screws. Solder the PCB contacts to the actuator cap terminals;

[0024] 7. Insert the terminal cover, brush spring, and brush into the actuator cover, and divert the solder to the actuator cap terminals;

[0025] 8. Place the seal on the bearing cap, and then press in the seal retainer;

[0026] 9. Place the spring washer into the bearing cap. (Example:) Figure 1 As shown, silicone sealant is applied to the grooves on the motor housing, and the heat pile is heated onto the motor housing;

[0027] 10. Place the welding wire into the motor housing cavity, and place the sensor housing on the same cavity, then electro-melt / weld to fix it in place;

[0028] 11. Press the screw cap onto the lead screw;

[0029] 12. Apply grease to the lead screw and insert it into the motor housing;

[0030] 13. Perform resistance checks and functional tests.

[0031] This specific implementation achieves precise control: Precise motor control is achieved through the settings of PIN A, PIN B, PIN C, PIN D, and PIN F, including the 5V reference pin, low reference pin, EGR valve position signal pin, EGR motor high control pin, and EGR motor low control pin. The use of ball bearings and grease reduces friction and improves motor operating efficiency. The use of epoxy resin adhesive, silicone sealant, and sealants enhances the motor's waterproof, dustproof, and corrosion-resistant capabilities, extending its service life. Soldering wire and PCB components ensures reliable electrical connections and reduces the failure rate. Modular design allows for easy installation and replacement of components, reducing maintenance costs. The integrated Hall sensor and brush assembly enable multiple functions, such as position detection and current transmission. The tightly fitted components result in a compact overall structure, saving space and making it suitable for various compact applications. The use of a lead screw and positioning plunger achieves high-precision position control, suitable for applications requiring precise position adjustment. The use of seals and silicone sealant allows the motor to operate normally in harsh environments, such as high temperature and high humidity conditions.

[0032] The standardized components and assembly steps of this specific embodiment result in high production efficiency and easy quality control. This motor, with its precise control, high efficiency, durability, and versatility, is suitable for various applications requiring precise control and high reliability.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A brushed stepper motor, characterized in that, The components include ball bearings (1), motor housing (2), motor rotor (3), commutator ring (4), commutator contacts (5), probe housing (6), PCB with Hall sensor (7), first self-tapping screw (8), epoxy resin adhesive (9), positioning plunger (10), plunger spring (11), second self-tapping screw (12), actuator cover (13), terminal cover (14), brush spring (15), brush (16), bearing cover (17), seal (18), seal retainer (19), spring washer (20), silicone sealant (21), welding wire (22), screw cover (23), and lead screw (24). The two ends of the motor rotor (3) are respectively fitted with ball bearings (1). The motor rotor (3) is located inside the motor housing (2). The commutator ring (4) is mounted on the motor rotor (3). The commutator contacts (5) are also installed inside the motor housing (2). The commutator contacts (5) are connected to the commutator ring (10). 4) The probe housing (6) is fixed to the PCB (7) with the Hall sensor by epoxy resin adhesive (9) and the first self-tapping screw (8). A plunger spring (11) is sleeved on the positioning plunger (10). The positioning plunger (10) is fixed inside the actuator cover (13) by the second self-tapping screw (12). The terminal cover (14), brush spring (15), and brush (16) are all inserted into the actuator cover (13). The sealing element (18) is fixed by the sealing element. The stabilizer (19) is fixed on the bearing cover (17). The bearing cover (17) is fitted with the ball bearing (1) through the spring washer (20). The groove of the motor housing (2) is coated with silicone sealant (21) and the heat pile is heated into the motor housing. The sensor housing is welded into the cavity of the motor housing (2) through the welding wire (22). The screw cover (23) is pressed onto the lead screw (24). The lead screw (24) is inserted into the motor housing (2) and connected to the motor rotor (3).

2. The brushed stepper motor according to claim 1, characterized in that, The lead screw (24) is coated with grease (25).

3. The brushed stepper motor according to claim 1, characterized in that, The actuator cover (13) is provided with PIN A, PIN B, PIN C, PIN D and PIN F; which respectively represent 5V reference pin, low reference pin, EGR valve position signal pin, EGR motor high control pin and EGR motor low control pin.

Images