Modular stepping motor shaft assembly

Abstract

The utility model relates to the technical field of mechatronics, and especially relates to a modularized stepping motor shaft assembly. The utility model provides a modularized stepping motor shaft assembly, which comprises a machine body, a machine cover, a motor shaft center, fixing rods, fixing blocks and connecting rods, the fixing rods are arranged at four corners of the top of the machine body, the machine cover is clamped at the top of the machine body, the machine body is connected with the machine cover in a clamping manner, and the motor shaft center is arranged at the center of the top of the machine cover. Fixing blocks are elastically connected to the four corners in the machine cover through first connecting springs, connecting rods are arranged at the tops of the fixing blocks, clamping fit is designed between the fixing blocks and the fixing rods, the upper ends of the fixing rods incline downwards, and the sides, close to the fixing rods, of the fixing blocks are also designed to be slopes. When the shaft center is replaced, the connecting rod is pulled to the right, the fixing block is separated from the machine cover fixing rod, the machine cover is easily separated, the shaft assembly of the modular stepping motor is conveniently taken out and replaced, and the dismounting process is simplified through the innovative clamping structure.

Description

Technical Field

[0001] The utility model relates to the technical field of mechatronics, and in particular to a modular stepping motor shaft assembly. Background Art

[0002] A stepper motor is a motor that converts electrical pulse signals into corresponding angular displacement or linear displacement. Each time a pulse signal is input, the rotor rotates an angle or moves forward one step. The angular displacement or linear displacement output is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Therefore, a stepper motor is also called a pulse motor.

[0003] Existing stepper motors are known for their compact construction, which includes key components such as stators, rotors, windings, bearings, housings, and connectors. These components need to be finely matched and fixed to ensure high precision and stability during operation. However, this compact internal structure design also brings a problem: when it is necessary to replace core components such as the shaft, the disassembly work will be relatively complicated and difficult.

[0004] In order to maintain the efficient and precise operation of stepper motors, their internal components are often fastened with fasteners such as screws and pins to form a stable connection. This precise assembly method works well when the motor is working properly, but it undoubtedly increases the difficulty of disassembly. Especially for fasteners that are deep inside the motor and difficult to reach, specific tools and methods may be required to operate them.

[0005] In addition, in order to enhance the waterproof and dustproof performance of stepper motors or improve the sealing between components, some motors may use adhesives or sealants during the assembly process. These materials will form a solid barrier after curing, further increasing the difficulty of disassembly.

[0006] Therefore, a modular stepper motor shaft assembly needs to be designed. Utility Model Content

[0007] In order to overcome the disadvantage of being inconvenient to disassemble, the utility model provides a modular stepping motor shaft assembly.

[0008] A modular stepper motor shaft assembly comprises a body, a cover, a motor axis, a fixing rod, a fixing block and a connecting rod, wherein fixing rods are arranged at the four corners of the top of the body, the cover is snap-connected to the top of the body, the body and the cover are snap-connected, the motor axis is installed at the center of the top of the cover, the four corners inside the cover are elastically connected to fixing blocks through a first connecting spring, connecting rods are arranged on the top of the fixing blocks, a snap-fit ​​is designed between the fixing blocks and the fixing rods, the upper end of the fixing rod is tilted downward, the side of the fixing block close to the fixing rod is also designed as an inclined surface, and the inclined surface of the fixing block moves downward to match the upper end inclined surface of the fixing rod.

[0009] Furthermore, it also includes a connecting frame and a slider. Limiting grooves are provided on the left and right sides of the upper part of the machine cover. The slider is slidably connected in the limiting groove. A connecting frame is connected between the tops of the two sliders. Four connecting rods are respectively located at the four corners of the inner frame of the connecting frame. The four corners of the inner frame of the connecting frame are designed to be inclined.

[0010] Furthermore, it also includes a guide block and a top block. Square grooves are opened on the left and right sides of the upper inner part of the fuselage. Guide blocks are symmetrically arranged in the square grooves of the fuselage in an up-and-down manner. The top block is elastically connected between the two guide blocks through a third connecting spring.

[0011] Furthermore, it also includes a second connecting spring, which is elastically connected to the slider in the limiting groove through the second connecting spring.

[0012] Furthermore, the top block contacts the bottom of the cover to form an elastic supporting structure.

[0013] Furthermore, the cover passes through four fixing rods and fits tightly with the fuselage.

[0014] The beneficial effects and significant improvements of the utility model are:

[0015] When the axis or core components need to be replaced, the connecting frame can be pulled to move it to the right. This operation will push the connecting rod to move to the right synchronously, and then drive the fixing block to move inward and separate from the fixing rod on the cover. In this way, the cover and the body can be easily separated, and then the cover can be easily removed to replace the necessary axis or core components of the internal modular stepper motor shaft assembly. This design simplifies the disassembly process of the body and casing through the innovative clip-on structure, and improves the efficiency of maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of components such as a fixing rod, a fixing block and a first connecting spring of the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of components such as a connecting frame, a sliding block, a second connecting spring and a top block of the utility model.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the guide block, the top block and the third connecting spring of the utility model.

[0020] In the accompanying drawings: 1: body, 2: cover, 21: motor axis, 3: fixing rod, 4: fixing block, 5: first connecting spring, 6: connecting rod, 7: connecting frame, 8: slider, 9: second connecting spring, 10: guide block, 11: top block, 12: third connecting spring. DETAILED DESCRIPTION

[0021] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0022] Example: A modular stepper motor shaft assembly, please see Figures 1 to 4 , including a body 1, a cover 2, a motor axis 21, a fixing rod 3, a fixing block 4, a first connecting spring 5, a connecting rod 6, a connecting frame 7, a slider 8, a second connecting spring 9, a guide block 10, a top block 11 and a third connecting spring 12, the fixing rods 3 are connected at the four corners of the top of the body 1, the top of the body 1 is clamped with the cover 2, the body 1 and the cover 2 are connected by a clamping structure, which is easy to disassemble, the cover 2 passes through four fixing rods 3 and fits tightly with the body 1, the motor axis 21 is installed at the center of the top of the cover 2, the four upper corners of the cover 2 are provided with sliding grooves, the four corners of the cover 2 are elastically connected with the fixing block 4 through the first connecting spring 5, the sliding grooves on the cover 2 are suitable for the sliding of the fixing block 4 to realize the sliding function of the fixing block 4, the top of the fixing block 4 is connected with a connecting rod 6, the connecting rod 6 extends out of the top of the cover 2, a clamping fit is designed between the fixing block 4 and the fixing rod 3, the upper end of the fixing rod 3 is tilted downward, and the fixing The side of block 4 close to the fixing rod 3 is also designed as an inclined surface. When the fixing block 4 moves downward, its inclined surface cooperates with the upper end inclined surface of the fixing rod 3. Limiting grooves are provided on the left and right sides of the upper part of the machine cover 2. Slide blocks 8 are elastically connected to the limiting grooves through the second connecting spring 9. The second connecting spring 9 acts on the slide block 8 to reset. A connecting frame 7 is connected between the tops of the two slide blocks 8. The four connecting rods 6 are respectively located at the four corners of the inner frame of the connecting frame 7, and the four corners of the inner frame of the connecting frame 7 are designed with an inclined surface. When the connecting frame 7 is subjected to a rightward thrust, the inclined surface acts on the connecting rod 6, forcing the connecting rod 6 to move. Square grooves are provided on the left and right sides of the upper inner part of the fuselage 1. Guide blocks 10 are symmetrically connected to the square grooves of the fuselage 1 in an upper and lower manner. A top block 11 is elastically connected between the two guide blocks 10 through a third connecting spring 12. The top block 11 contacts the bottom of the machine cover 2 to form an elastic support structure. The third connecting spring 12 is in a compressed state.

[0023] When the modular stepper motor shaft assembly needs to replace the core components such as the axis, it needs to be disassembled, and the maintenance personnel should first slide the connecting frame 7 to the right, thereby driving the slider 8 to move to the right. During the sliding process, the second connecting spring 9 on the left is compressed, while the second connecting spring 9 on the right is stretched. At the same time, the rightward thrust of the connecting frame 7 acts on the four connecting rods 6. Since the four corners of the inner frame of the connecting frame 7 are designed with inclined surfaces, the connecting rods 6 slide along the slide grooves on the machine cover 2 under the guidance of the inclined surfaces, thereby pushing the fixed block 4 to move inward. At this time, the first connecting spring 5 is compressed, the contact between the fixed block 4 and the fixed rod 3 is released, and the fixed block 4 is no longer restricted. Since the top block 11 is supported by the bottom of the machine cover 2 and the third connecting spring 12 is in a compressed state, when the fixed block 4 is not restricted, the top block 11 will move upward under the resetting action of the third connecting spring 12, and lift up the casing, which is beneficial to the separation of the casing from the fuselage 1. The maintenance personnel can easily lift the entire machine cover 2 upward to separate it from the fuselage 1, complete the disassembly of the modular stepper motor shaft assembly, and replace the axis or core components of the modular stepper motor shaft assembly.

[0024] When the connecting frame 7 needs to be reset, it is only necessary to loosen the connecting frame 7, and the second connecting spring 9 will drive the slider 8 to move leftward under the elastic reset effect, so that the connecting frame 7 returns to its original position. At this time, the connecting frame 7 no longer applies thrust to the connecting rod 6, and the connecting rod 6 drives the fixing block 4 to move outward under the reset effect of the first connecting spring 5 and returns to its initial position.

[0025] When installation is required, align the cover 2 with the body 1 and press down firmly. During the pressing process, the inclined surface of the fixing block 4 contacts the inclined surface of the upper end of the fixing rod 3, and the fixing block 4 is squeezed by the inclined surface of the fixing rod 3 and moves inward, and the first connection spring 5 is compressed accordingly. When the fixing block 4 completely passes through the upper end inclined surface of the fixing rod 3, the fixing rod 3 no longer squeezes the fixing block 4, and the fixing block 4 moves outward under the action of the elastic force of the first connection spring 5. Finally, the fixing block 4 is restricted below the upper end inclined surface of the fixing rod 3, thereby completing the firm connection between the cover 2 and the body 1.

[0026] Although the utility model is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications can be made to the utility model without departing from the principle and spirit of the utility model defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the utility model, but the scope of protection is limited by the content of the claims.

Claims

1. A modular stepper motor shaft assembly, characterized in that: The invention comprises a body (1), a cover (2), a motor axis (21), a fixing rod (3), a fixing block (4) and a connecting rod (6). The fixing rods (3) are arranged at the four corners of the top of the body (1). The top of the body (1) is clamped with the cover (2). The body (1) and the cover (2) are connected in a clamping manner. The motor axis (21) is installed at the center of the top of the cover (2). The four corners inside the cover (2) are elastically connected with the fixing blocks (4) through first connecting springs (5). The top of the fixing blocks (4) are provided with connecting rods (6). A clamping fit is designed between the fixing blocks (4) and the fixing rod (3). The upper end of the fixing rod (3) is inclined downward. The side of the fixing block (4) close to the fixing rod (3) is also designed as an inclined surface. When the fixing block (4) moves downward, its inclined surface matches the inclined surface of the upper end of the fixing rod (3).

2. A modular stepper motor shaft assembly as claimed in claim 1, characterized in that: The machine cover (2) also includes a connecting frame (7) and a sliding block (8). The upper left and right sides of the machine cover (2) are provided with limiting grooves. The sliding blocks (8) are slidably connected in the limiting grooves. The connecting frame (7) is connected between the tops of the two sliding blocks (8). The four connecting rods (6) are respectively located at the four corners of the inner frame of the connecting frame (7). The four corners of the inner frame of the connecting frame (7) are designed to be inclined.

3. A modular stepper motor shaft assembly as claimed in claim 2, characterized in that: It also includes a guide block (10) and a top block (11). The left and right sides of the upper inner portion of the body (1) are both provided with square grooves. The square grooves of the body (1) are both provided with guide blocks (10) in a vertically symmetrical manner. The top blocks (11) are elastically connected between the two guide blocks (10) via a third connecting spring (12).

4. A modular stepper motor shaft assembly as claimed in claim 3, characterized in that: It also includes a second connecting spring (9) which is elastically connected to the slider (8) in the limiting groove via the second connecting spring (9).

5. A modular stepper motor shaft assembly as claimed in claim 3, characterized in that: The top block (11) contacts the bottom of the cover (2) to form an elastic supporting structure.

6. A modular stepper motor shaft assembly as claimed in claim 1, characterized in that: The machine cover (2) passes through the four fixing rods (3) and is tightly fitted with the machine body (1).

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