Novel brush stepping motor

Abstract

The utility model discloses a novel brush stepping motor, and relates to the technical field of motors. The first ball bearing and the second ball bearing are installed on the matched diameters of the two ends of the motor rotor respectively, the motor rotor is installed in the motor shell, the bearing retainer is connected to the motor rotor in a pressed mode, a rotor sensor is arranged on the motor rotor, and the contact is inserted and welded into the sensor shell. A PCB assembly is further fixed in the sensor shell through a first screw and a connecting piece, a screw guide rail is fixed in a machining casting cover through a fixator and a sealing piece, a thrust washer and a wave spring are sequentially arranged in the machining casting cover, and a groove of the motor shell is fixed to the machining casting cover through silicone sealant and a second screw. A motor shell cavity is welded with a sensor shell through a welding wire, a screw cover is matched with a boss of a lead screw, and the lead screw is matched with a motor rotor actuator in an inserted mode. The utility model has the advantages of simple structure, reasonable design, high precision, high reliability and good sealing performance, and is easy to install and use.

Description

Technical Field

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

[0002] Brushed stepper motors are typically controlled by a drive circuit that energizes the stepper windings in a specific sequence, causing the rotor to rotate step by step. This control method makes stepper motors ideal for applications requiring precise positioning. However, some brushed stepper motors on the market have complex designs, leading to high manufacturing costs and difficult maintenance. Some motors may exhibit positional errors during operation, affecting their performance. They are prone to failure under prolonged operation or harsh environments, reducing their lifespan. Many motors perform poorly in terms of dust and water resistance, making them susceptible to environmental influences. Insufficient lubrication can also lead to excessive frictional heat during operation, affecting performance. Installation and use are cumbersome, increasing the burden on users. These motors are also prone to damage under high-intensity operating conditions. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of brushed stepper motor, which has a simple structure, reasonable design, high precision, high reliability, good sealing performance, efficient lubrication system, is easy to install and use, and also has high strength and durability.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A novel brushed stepper motor includes a first ball bearing, a motor housing, a bearing cage, a second ball bearing, a motor rotor, a rotor sensor, a connector, a sensor housing, a first screw, a PCB assembly, a retainer, a screw guide rail, a seal, a machined cast cover, a thrust washer, a wave spring, a second screw, silicone sealant, welding wire, a screw cap, and a lead screw. The first ball bearing and the second ball bearing are respectively mounted on the mating diameters at both ends of the motor rotor, and the motor rotor is installed inside the motor housing. The bearing cage is pressed onto the motor rotor, and a rotor sensor is installed on the motor rotor. The contacts are inserted and welded into the sensor housing. The PCB assembly is also fixed in the sensor housing by the first screw and the connector. The screw guide is fixed to the machined casting cover by the retainer and the seal. The thrust washer and the wave spring are sequentially installed in the machined casting cover. The groove of the motor housing is fixed to the machined casting cover by the silicone sealant and the second screw. The motor housing cavity is welded to the sensor housing by the welding wire. The screw cover and the boss of the lead screw are engaged. The lead screw is engaged by the motor rotor actuator.

[0005] Preferably, grease is applied to the threads of the motor rotor and the lead screw.

[0006] Preferably, the sensor housing is further provided with PIN 1, PIN 2, PIN 3, PIN 4, PIN 5, PIN 6, PIN 7, and PIN 8, which respectively represent the sensor +5V pin, Hall output U pin, Hall output V pin, Hall output W pin, sensor ground pin, phase W pin, phase V pin, and phase U pin.

[0007] The beneficial effects of this utility model are: the structure of this utility model is simple and the design is reasonable. It has the advantages of high precision, high reliability, good sealing performance, efficient lubrication system, modular design, intelligence and automation, easy installation and use, high strength and durability, as well as testability and traceability. 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 Enlarged schematic diagram of part F;

[0012] Figure 4 for Figure 2 EE-directed sectional view;

[0013] Figure 5 This is a bottom view of the motor housing of this utility model. Detailed Implementation

[0014] 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.

[0015] Reference Figure 1-5This specific embodiment adopts the following technical solution: A novel brushed stepper motor includes a first ball bearing 1, a motor housing 2, a bearing cage 3, a second ball bearing 4, a motor rotor 5, a rotor sensor 6, a connector 7, a sensor housing 8, a first screw 9, a PCB assembly 10, a retainer 11, a screw guide 12, a seal 13, a machined cast cover 14, a thrust washer 15, a wave spring 16, a second screw 17, silicone sealant 18, welding wire 19, a screw cover 20, and a lead screw 21. The first ball bearing 1 and the second ball bearing 4 are respectively installed on the mating diameters at both ends of the motor rotor 5. The motor rotor 5 is installed inside the motor housing 2, and the bearing cage... 3 is pressed onto the motor rotor 5. The motor rotor 5 is equipped with a rotor sensor 6. The contacts are inserted and welded into the sensor housing 8. The PCB assembly 10 is also fixed in the sensor housing 8 by the first screw 9 and the connector 7. The screw guide rail 12 is fixed to the machined casting cover 14 by the retainer 11 and the seal 13. The thrust washer 15 and the wave spring 16 are sequentially arranged in the machined casting cover 14. The groove of the motor housing is fixed to the machined casting cover 14 by the silicone sealant 18 and the second screw 17. The motor housing cavity is welded to the sensor housing 8 by the welding wire 19. The screw cover 20 is engaged with the boss of the lead screw 21. The lead screw 21 is engaged by the actuator of the motor rotor 5.

[0016] It is worth noting that grease 22 is applied to the threads of the motor rotor 5 and the lead screw 21.

[0017] In addition, the sensor housing 8 is provided with PIN 1, PIN 2, PIN 3, PIN 4, PIN 5, PIN 6, PIN 7, and PIN 8, which respectively represent the sensor +5V pin, Hall output U pin, Hall output V pin, Hall output W pin, sensor ground pin, phase W pin, phase V pin, and phase U pin.

[0018] The installation steps for this specific implementation method are as follows:

[0019] 1. Press the ball bearing into the motor housing;

[0020] 2. Assemble the ball bearing onto the mating diameter of the motor rotor, with a minimum preload of 50 pounds, and press the bearing retainer onto the motor rotor.

[0021] 3. Insert the motor rotor into the motor housing, place the sensor rotor on the motor rotor, and heat the hot pile to the desired position.

[0022] 4. Insert and solder the contacts into the sensor housing. Place the PCB assembly into the sensor housing and secure it with the first screw to a torque of 3 Nm.

[0023] 5. Insert the screw guide rail and seal it into the machined cast cover, then press the retainer to secure it in place.

[0024] 6. Place the thrust washer and wave spring into the machined cast cover. As shown in the figure, apply silicone sealant to the groove on the motor housing, and then fix it to the motor housing with the bottom screws.

[0025] 7. 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.

[0026] 8. Press the screw cap onto the mating boss of the lead screw and rivet it in place. Apply grease to the threads of the motor rotor and the lead screw, and then insert the lead screw into the actuator.

[0027] 9. Test the actuator according to the requirements of step 2. Apply the part marking date code.

[0028] The brushed stepper motor of this specific embodiment features high precision and reliability: by using high-quality ball bearings and precise assembly processes, the smooth operation and high accuracy of the motor rotor are ensured. This helps reduce friction and wear, improving the motor's lifespan and reliability.

[0029] The brushed stepper motor of this specific embodiment has excellent sealing performance: the use of silicone sealant and sealing components effectively prevents dust, moisture, and other contaminants from entering the motor, enhancing its protective capabilities. It features an efficient lubrication system: grease is applied to the threads of the motor rotor and lead screw, reducing frictional resistance and improving transmission efficiency and operational smoothness. It adopts a modular design: the use of connectors, retainers, and screw guides enables a modular design, facilitating assembly, maintenance, and component replacement.

[0030] This specific embodiment of the brushed stepper motor features intelligence and automation: equipped with a rotor sensor and PCB assembly, it can monitor and control the motor's operating status in real time, improving the system's intelligence and automation level. It is easy to install and use: the design considers user convenience, for example, the use of screw caps and lead screw bosses simplifies the installation process and improves the user experience. It possesses high strength and durability: using machined cast caps and high-quality materials ensures the overall strength and durability of the motor, enabling stable operation in various harsh environments. It is testable and traceable: rigorous testing is conducted during the manufacturing process, and date codes are used to ensure product quality and traceability.

[0031] The brushed stepper motor of this specific embodiment can be used in various application scenarios, meeting users' needs for high-performance, high-reliability and long-life motors.

[0032] 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 novel brushed stepper motor, characterized in that, The assembly includes a first ball bearing (1), a motor housing (2), a bearing cage (3), a second ball bearing (4), a motor rotor (5), a rotor sensor (6), a connector (7), a sensor housing (8), a first screw (9), a PCB assembly (10), a retainer (11), a screw guide (12), a seal (13), a machined cast cover (14), a thrust washer (15), a wave spring (16), a second screw (17), silicone sealant (18), welding wire (19), a screw cover (20), and a lead screw (21). The first ball bearing (1) and the second ball bearing (4) are respectively installed on the mating diameters at both ends of the motor rotor (5). The motor rotor (5) is installed inside the motor housing (2), and the bearing cage (3) is pressed onto the motor rotor (5). A rotor sensor (6) is installed on the motor rotor (5). The contacts are inserted and welded into the sensor housing (8). A PCB assembly (10) is also fixed in the sensor housing (8) by a first screw (9) and a connector (7). The screw guide rail (12) is fixed to the machined casting cover (14) by a retainer (11) and a seal (13). The thrust washer (15) and the wave spring (16) are sequentially installed in the machined casting cover (14). The groove of the motor housing is fixed to the machined casting cover (14) by silicone sealant (18) and a second screw (17). The motor housing cavity is welded to the sensor housing (8) by welding wire (19). The screw cover (20) is engaged with the boss of the lead screw (21). The lead screw (21) is engaged with the actuator through the motor rotor (5).

2. The novel brushed stepper motor according to claim 1, characterized in that, Lubricating grease (22) is applied to the threads of the motor rotor (5) and the lead screw (21).

3. A novel brushed stepper motor according to claim 1, characterized in that, The sensor housing (8) is also provided with PIN 1, PIN 2, PIN 3, PIN 4, PIN 5, PIN 6, PIN 7 and PIN 8, which respectively represent the sensor +5V pin, Hall output U pin, Hall output V pin, Hall output W pin, sensor ground pin, phase W pin, phase V pin and phase U pin.

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