Screw-free fixed type centering welding stepping motor
The screwless fixed design of the stepper motor, the laser welding of the front cover and the rear cover and the bearing chamber structure solve the volume and cost problems of the traditional stepper motor, and achieve the miniaturization and cost reduction of the motor.
Patent Information
- Application Number
- CN202422908780.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Traditional stepper motors require the use of fastening screws during design and installation, which results in winding space occupation and motor size cannot be reduced, and the cost cannot be reduced, which increases the limitations of use.
The screwless fixing design is adopted. Through laser welding of the front and rear covers to the insulation frame, combined with the bearing chamber structure, the use of fastening screws is avoided, ensuring the internal space utilization and assembly accuracy of the motor.
It effectively reduces the size of the motor, reduces costs, improves motor performance and stability, and avoids the occupation of winding slot space by fastening screws.
Smart Images
Figure CN223451695U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a step motor technical field especially relates to a screw fixing type centering welding step motor. BACKGROUND
[0002] The conventional step motor cannot avoid using fastening screws when designing and installing, and needs to use fastening screws to fix the shell covering the internal structure. Unavoidably, the screws will extend into the motor interior, occupying part of the winding space, and at the same time, there is a certain requirement for the thickness of the motor shell, otherwise the shell with insufficient strength will be deformed when the screws are fixed, which also makes the volume of the motor unable to be further reduced, the cost unable to be reduced, and the use of the step motor limited. SUMMARY
[0003] The purpose of the present application is to provide a screw fixing type centering welding step motor to solve the problems raised in the background art.
[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:
[0005] A screw fixing type centering welding step motor, comprising a stator assembly, a rotor assembly, a front end cover and a rear end cover, the rotor assembly is installed inside the stator assembly, the stator assembly comprises a stator core and two insulation skeletons, the two insulation skeletons are symmetrically installed on the upper and lower ends of the stator core, a notch is formed through the outer wall of the end face of the stator core, the insulation skeleton is of a ring structure, the insulation skeleton is spliced by a plurality of plug-in plates, the plurality of plug-in plates are arranged in a ring array and the number and position correspond to the number of notches of the stator core, the shape of the plug-in plate is matched with the shape of the notch of the stator core, the insulation skeleton is fixed by the plug-in plate and the notch of the stator core, and the front end cover and the rear end cover are fixedly installed on the insulation skeletons at the two ends of the stator core.
[0006] Preferably, the rotor assembly comprises a rotor one, a rotor two and a rear magnetic steel, the center part of the stator core is provided with the rotor one and the rotor two, the rear magnetic steel is clamped and installed between the rotor one and the rotor two, the shaft rod is installed at the center of the rotor one, the rotor two and the rear magnetic steel, and the two ends of the shaft rod are connected with the front end cover and the rear end cover through bearings. The buckle is fixedly installed at the upper edge of the plug-in plate, the buckle is a right-angle bent plate, the inner walls of the front end cover and the rear end cover are provided with the clamping groove matched with the buckle, and the inner ring of the insulation skeleton is fixedly installed with a plurality of inlay plates.
[0007] Preferably, the center of the front end cover is hollowed out, the hollowed-out position is a bearing chamber, a bearing is installed inside the bearing chamber of the front end cover and is sleeved on the outer wall of the shaft rod, the inner wall of the shaft core of the bearing is fixedly connected with the outer wall of the shaft rod, the center of the front end cover is fixedly provided with an upper cover plate, and the outer wall of the bearing sleeve is fixedly connected with the upper cover plate.
[0008] The utility model discloses a beneficial effect is: through being provided with front end cover, rear end cover and insulating framework, insulating framework can primarily fix front end cover and rear end cover at the both ends of stator core, uses laser welding and fixes front and rear end cover, has replaced fastening screw, and bearing chamber can make the installation of bearing not increase the overall thickness of motor, makes motor whole not use fastening screw, does not occupy stator core inside winding slot space, effectively reduces motor volume, reduces cost. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is whole structure schematic diagram of the utility model;
[0010] Figure 2 It is whole structure explosion drawing of the utility model;
[0011] Figure 3 It is whole structure schematic diagram of the utility model in stator subassembly;
[0012] Figure 4 It is whole structure schematic diagram of the utility model in insulating framework.
[0013] In the drawing: 1, upper cover plate;2, plugboard;3, front end cover;4, buckle;5, shaft rod;6, insulating framework;7, rotor one;8, stator core;9, rear magnetic steel;10, rotor two;11, inlay board;12, rear end cover;13, lower cover plate. DETAILED DESCRIPTION
[0014] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined. The directions mentioned in the utility model, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc. are only the directions of the attached drawings. Therefore, the directional terms used are used to explain and understand the utility model, not to limit the utility model.
[0015] As Figures 1-3The illustrated screwless fixed center welding stepping motor includes a stator assembly, a rotor assembly, a front end cover 3 and a rear end cover 12, the rotor assembly is installed inside the stator assembly, the stator assembly includes a stator core 8 and two insulation skeletons 6, the two insulation skeletons 6 are symmetrically installed on the upper and lower ends of the stator core 8, a notch is formed through the outer wall of the end face of the stator core 8, the insulation skeleton 6 is of a ring structure, the insulation skeleton 6 is spliced by a plurality of plug-in plates 2, the plurality of plug-in plates 2 are arranged in a ring array and the number and position thereof correspond to the number of the notches of the stator core 8, the plug-in plate 2 is shaped to fit the shape of the notch of the stator core 8, the insulation skeleton 6 is fixedly embedded with the stator core 8 through the plug-in plate 2, and the front end cover 3 and the rear end cover 12 are fixedly installed on the insulation skeletons 6 at the two ends of the stator core 8.
[0016] The rotor assembly includes a rotor one 7, a rotor two 10 and a rear magnetic steel 9, the center part of the stator core 8 is provided with the rotor one 7 and the rotor two 10, the rear magnetic steel 9 is clamped and installed between the rotor one 7 and the rotor two 10, the shaft rod 5 is installed through the center of the rotor one 7, the rotor two 10 and the rear magnetic steel 9, and the two ends of the shaft rod 5 are connected with the front end cover 3 and the rear end cover 12 through bearings. The buckle 4 is fixedly installed at the upper edge of the plug-in plate 2, the buckle 4 is a right-angle bent plate, the inner walls of the front end cover 3 and the rear end cover 12 are provided with clamping grooves matched with the buckle 4, and the inner ring of the insulation skeleton 6 is fixedly installed with a plurality of embedded plates 11.
[0017] The center of the front end cover 3 is hollow, the hollow part is a bearing chamber, the bearing is installed inside the bearing chamber of the front end cover 3 and is sleeved and installed on the outer wall of the shaft rod 5, the inner wall of the shaft core of the bearing is fixedly connected with the outer wall of the shaft rod 5, the upper cover plate 1 is fixedly installed at the center of the front end cover 3, and the outer wall of the bearing sleeve is fixedly connected with the upper cover plate 1. The center of the rear end cover 12 is hollow, the hollow position is a bearing chamber, the bearing is installed inside the bearing chamber of the rear end cover 12 and is sleeved and installed on the outer wall of the shaft rod 5, the inner wall of the shaft core of the bearing is fixedly connected with the outer wall of the shaft rod 5, the lower cover plate 13 is fixedly installed at the center of the rear end cover 12, and the outer wall of the bearing sleeve is fixedly connected with the lower cover plate 13.
[0018] The embodiment is as follows: the rotor one 7 and the rotor two 10 clamp the rear magnetic steel 9, the shaft rod 5 passes through the rotor one 7, the rotor two 10 and the rear magnetic steel 9, the outer wall of the two ends of the shaft rod 5 is fixedly installed with bearings, so that a rotor assembly is formed, the rotor assembly is installed at the center part of the stator core 8, the front end cover 3 and the rear end cover 12 are annular structures, the hollow part in the middle is a bearing chamber, the inner ring position of the annular inner wall of the front end cover 3 and the rear end cover 12 is clamped with the inner ring position of the insulation skeleton 6, a plurality of embedded plates 11 in the inner ring of the insulation skeleton 6 form an annular structure and clamp the annular inner wall of the front end cover 3 and the rear end cover 12, the buckle 4 at the edge of the plug-in plate 2 is connected with the clamping groove in the front end cover 3 and the rear end cover 12, so that the front end cover 3 and the rear end cover 12 can be preliminarily fixed at the two ends of the stator core 8, the front end cover 3 and the rear end cover 12 are made of stainless steel, and the joint between the stator core 8 and the front end cover 3 and the rear end cover 12 is fixed by laser welding, so that the assembly precision is high, the end cover assembly does not occupy the internal space of the stator, the motor performance is effectively improved, the bearing chamber in the center of the front end cover 3 and the rear end cover 12 can enable the installation of the bearing without increasing the overall thickness of the motor, reduce the volume, the upper cover plate 1 and the lower cover plate 13 are fixed in the position of the bearing chamber by using metal holding glue, and the stability of the motor is ensured. In this way, the motor as a whole does not use fastening screws, does not occupy the winding slot space in the stator core 8, effectively reduces the volume of the motor, and reduces the cost.
[0019] It should be noted that the parts not involved in the utility model are the same as or can be realized by using the prior art; various drives in the utility model can be realized by using corresponding power structures such as air cylinders, oil cylinders, electric cylinders and motors in cooperation with connecting rods and guide rods, and are not limited to the description in the specification and the structure in the drawings.
[0020] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.
Claims
1. A screwless fixed center welding stepper motor, comprising a stator assembly, a rotor assembly, a front cover (3) and a rear cover (12), characterized in that: The rotor assembly is installed inside the stator assembly. The stator assembly includes a stator core (8) and two insulating frames (6). The two insulating frames (6) are symmetrically installed at the upper and lower ends of the stator core (8). A slot is provided on the outer wall of the end face of the stator core (8). The insulating frame (6) is an annular structure. The insulating frame (6) is spliced by a plurality of plug-ins (2). The plurality of plug-ins (2) are distributed in an annular array and the number and position correspond to the number of slots in the stator core (8). The shape of the plug-ins (2) matches the shape of the slots in the stator core (8). The insulating frame (6) is fixed by the plug-ins (2) and the slots in the stator core (8). The front end cover (3) and the rear end cover (12) are respectively fixed on the insulating frames (6) at the two ends of the stator core (8).
2. The screwless fixed center welding stepper motor according to claim 1, characterized in that: The rotor assembly comprises rotor one (7), rotor two (10) and rear magnetic steel (9); rotor one (7) and rotor two (10) are provided at the central portion of the stator core (8); rear magnetic steel (9) is clamped and installed between rotor one (7) and rotor two (10); a shaft (5) is installed through the center of rotor one (7), rotor two (10) and rear magnetic steel (9); and two ends of the shaft (5) are respectively connected to the front end cover (3) and the rear end cover (12) through bearings.
3. The screwless fixed center welding stepper motor according to claim 2, characterized in that: The center of the front end cover (3) is hollowed out, and the hollowed-out area is a bearing chamber. The bearing is installed inside the bearing chamber of the front end cover (3) and sleeved on the outer wall of the shaft rod (5). The inner wall of the shaft core of the bearing is fixedly connected to the outer wall of the shaft rod (5). An upper cover plate (1) is fixedly installed at the center of the front end cover (3), and the outer wall of the shaft sleeve of the bearing is fixedly connected to the upper cover plate (1).
4. The screwless fixed center welding stepper motor according to claim 2, characterized in that: The center of the rear end cover (12) is hollowed out, and the hollowed-out position is a bearing chamber. The bearing is installed inside the bearing chamber of the rear end cover (12) and is sleeved on the outer wall of the shaft rod (5). The inner wall of the shaft core of the bearing is fixedly connected to the outer wall of the shaft rod (5). A lower cover plate (13) is fixedly installed at the center of the rear end cover (12), and the outer wall of the shaft sleeve of the bearing is fixedly connected to the lower cover plate (13).
5. The screwless fixed center welding stepper motor according to claim 1, characterized in that: A buckle (4) is fixedly installed at the upper edge of the plug board (2), and the buckle (4) is in the shape of a right-angle bent plate. The inner walls of the front cover (3) and the rear cover (12) are both provided with slots that match the buckle (4). The inner ring of the insulating frame (6) is fixedly installed with a plurality of interlocking plates (11).