Stepping motor stator and stepping motor

Abstract

The utility model relates to the technical field of stepping motors, and discloses a stepping motor stator and a stepping motor, the stepping motor stator comprises a constraint sleeve, stator iron cores, a winding part, a first round hole, a limiting screw shaft, a screw sleeve, a limiting lock ring, an insertion piece and a slot, in the utility model, multiple groups of stator iron cores can be inserted into the outside of the limiting screw shaft through the first round hole for limiting and assembling; when the motor is started, the screw sleeve is in threaded rotary connection with the outside of the limiting screw shaft, the limiting lock ring at the bottom of the screw sleeve can be inserted into the slot along with the rotary installation of the screw sleeve, and then the bolt is in threaded connection with the screw hole in the screw sleeve, so that the lower end of the bolt is in threaded locking with the screw hole in the limiting lock ring. And the screw sleeve can be locked and matched with the slot through the plug-in at the bottom of the limiting lock ring, so that the screw sleeve is prevented from loosening and being detached in a similar way, the assembling stability of the stator core is improved, and the situation that the winding part is damaged due to the loosening of the stator core and the use of the motor is influenced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, in particular to a stepping motor stator and a stepping motor. Background Art

[0002] A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular or linear displacements. Each pulse signal causes the rotor to rotate one degree or advance one step. The output angular or linear displacement is proportional to the number of pulses input, and the speed is proportional to the pulse frequency. Therefore, stepper motors are also called pulse motors.

[0003] The existing stepper motor stator core is usually composed of stacked stator punching sheets. When the stator core and the stator sleeve are assembled, the stator core's own plug-in hole is limited by a plug rod and then locked by a threaded cap. However, when the motor is started after running for a long time, the stator core is prone to resonance due to vibration, which causes the nut to loosen easily and damage the use of the winding assembly. For this reason, we propose a stepper motor stator and a stepper motor. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a stepping motor stator and a stepping motor.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a stepper motor stator, comprising a restraining sleeve, a stator core and a winding part, a first circular hole being opened inside the stator core, a limiting screw shaft being installed on the inner side of the restraining sleeve, several groups of the stator cores being assembled and matched with the outside of the limiting screw shaft through the first circular hole, the external thread of the limiting screw shaft being connected with a screw sleeve for locking the stator core, a limiting locking ring being provided at the bottom of the screw sleeve, a plug-in being installed at the bottom of the limiting locking ring, and a slot being opened inside the stator core.

[0006] Preferably, when the screw sleeve is connected to the outer thread of the limiting screw shaft, the plug-in at the bottom of the limiting locking ring is in a limiting locking state with the slot inside the stator core.

[0007] Preferably, a mounting groove is provided on the top of the limiting lock ring, a connecting ring is installed on the bottom of the screw sleeve, and the bottom of the screw sleeve is rotatably connected and matched with the mounting groove inside the limiting lock ring through the connecting ring.

[0008] Preferably, a screw hole penetrating the limiting locking ring is provided at the top of the screw sleeve, and the internal thread of the screw hole is connected to a bolt for limiting the limiting locking ring.

[0009] Preferably, a support portion is integrally formed on the inner side of the stator core, a docking groove is provided inside the support portion, the winding portion is docked and assembled with the docking groove, a limit rotary piece for limiting and fixing the winding portion is provided above the support portion, a second circular hole is provided inside the limit rotary piece, a connecting shaft is installed above the support portion, and the limit rotary piece is rotatably connected to the outer periphery of the connecting shaft through the second circular hole.

[0010] A stepping motor comprises a stepping motor stator mentioned in any one of the above technical solutions.

[0011] The utility model provides a stepper motor stator and a stepper motor, which have the following beneficial effects:

[0012] 1. A stepper motor stator and a stepper motor. In this article, the multiple groups of stator cores can be inserted into the binding sleeve after being stacked, and the multiple groups of stator cores can be inserted into the outside of the limiting screw shaft through the first circular hole for limited assembly. At this time, the screw sleeve is threadedly rotated with the outside of the limiting screw shaft, and the limiting locking ring at the bottom of the screw sleeve can be plugged into the slot inside the stator core as the screw sleeve is rotated. At this time, the bolt is threadedly connected with the screw hole inside the screw sleeve, so that the lower end of the bolt is threadedly locked with the screw hole inside the limiting locking ring, and the limiting locking ring is limited. In this way, when the motor is started and used, the screw sleeve can be locked and matched with the slot inside the stator core through the plug-in at the bottom of the limiting locking ring to avoid loosening of the screw sleeve. The same is true for disassembly, thereby improving the assembly stability of the stator core and avoiding damage to the winding part caused by loosening of the stator core, which affects the effect of motor use.

[0013] 2. The stator and stepper motor of the stepper motor are rigidly connected to the inner side of the stator core, and the winding part and the support part are assembled. When installing the winding part, the winding part and the docking groove inside the support part can be clamped and limited, and then the limiting rotary piece can be rotated until it is parallel to the support part. The winding part is limited and fixed by the limiting rotary piece, and the disassembly is similar, thereby achieving the effect of facilitating the subsequent disassembly, replacement and use of the winding part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial schematic diagram of the screw sleeve of the utility model;

[0018] Figure 3 For this utility model Figure 1 A magnified view of center.

[0019] Legend:

[0020] 1. Binding sleeve; 2. Stator core; 3. Winding part; 4. First circular hole; 5. Limit screw shaft; 6. Screw sleeve; 7. Limit locking ring; 8. Mounting groove; 9. Connecting ring; 10. Plug-in; 11. Slot; 12. Screw hole; 13. Bolt; 14. Support part; 15. Docking groove; 16. Limit rotating part; 17. Second circular hole; 18. Connecting shaft. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: A stepping motor stator, such as Figure 1-Figure 3As shown, it includes a binding sleeve 1, a stator core 2 and a winding portion 3. A first circular hole 4 is opened inside the stator core 2. A limiting screw shaft 5 is installed on the inner side of the binding sleeve 1. Several groups of stator cores 2 are assembled and plugged into the outside of the limiting screw shaft 5 through the first circular hole 4. The external thread of the limiting screw shaft 5 is connected with a screw sleeve 6 for locking the stator core 2. A limiting locking ring 7 is provided at the bottom of the screw sleeve 6. A mounting groove 8 is opened at the top of the limiting locking ring 7. A connecting ring 9 is installed at the bottom of the screw sleeve 6. The bottom of the screw sleeve 6 is rotatably connected and matched with the mounting groove 8 inside the limiting locking ring 7 through the connecting ring 9. A plug-in 10 is installed at the bottom of the limiting locking ring 7. A slot 11 is opened inside the stator core 2. The screw sleeve 6 is connected to the limiting screw shaft 5 in a fixed position. When the external thread is connected, the plug-in 10 at the bottom of the limiting locking ring 7 is in a limited locking state with the slot 11 inside the stator core 2. A screw hole 12 that passes through the limiting locking ring 7 is provided at the top of the screw sleeve 6. The internal thread of the screw hole 12 is connected with a bolt 13 that limits the limiting locking ring 7. A support part 14 is integrally formed on the inner side of the stator core 2. A docking groove 15 is provided inside the support part 14. The winding part 3 is docked and assembled with the docking groove 15. A limiting rotary part 16 that limits and fixes the winding part 3 is provided above the support part 14. A second circular hole 17 is provided inside the limiting rotary part 16. A connecting shaft 18 is installed above the support part 14. The limiting rotary part 16 is connected to the outer periphery of the connecting shaft 18 through the second circular hole 17.

[0023] Example 2: A stepping motor, such as Figure 1-Figure 3 As shown, it includes a stepping motor stator mentioned in Example 1.

[0024] The working principle of this utility model:

[0025] The multiple groups of stator cores 2 can be inserted into the binding sleeve 1 after being stacked, and the multiple groups of stator cores 2 can be inserted into the outside of the limiting screw shaft 5 through the first circular hole 4 for limited assembly. At this time, the screw sleeve 6 is threadedly rotated with the outside of the limiting screw shaft 5, and the limiting locking ring 7 at the bottom of the screw sleeve 6 can be plugged into the slot 11 inside the stator core 2 as the screw sleeve 6 is rotated. At this time, the bolt 13 is threadedly connected with the screw hole 12 inside the screw sleeve 6, so that the lower end of the bolt 13 is threadedly locked with the screw hole 12 inside the limiting locking ring 7, and the limiting locking ring 7 is limited. In this way, when the motor is started and used, the screw sleeve 6 can be inserted into the slot 11 at the bottom of the limiting locking ring 7. The component 10 is locked with the slot 11 inside the stator core 2 to prevent the screw sleeve 6 from loosening, and the same applies to disassembly, thereby improving the assembly stability of the stator core 2 and preventing the stator core 2 from loosening and causing damage to the winding part 3, affecting the use of the motor. The support part 14 is rigidly connected to the inner side of the stator core 2, and the winding part 3 and the support part 14 are assembled. When installing the winding part 3, the winding part 3 can be clamped and limited in the docking groove 15 inside the support part 14, and then the limiting rotary part 16 is rotated to be parallel to the support part 14, and the winding part 3 is limited and fixed by the limiting rotary part 16, and the same applies to disassembly.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A stepper motor stator, comprising a restraining sleeve (1), a stator core (2), and a winding portion (3), characterized in that: A first circular hole (4) is provided inside the stator core (2), a limiting screw shaft (5) is installed on the inner side of the restraining sleeve (1), and a plurality of groups of stator cores (2) are assembled and matched with the outer part of the limiting screw shaft (5) through the first circular hole (4). The outer thread of the limiting screw shaft (5) is connected to a screw sleeve (6) for locking the stator core (2), a limiting locking ring (7) is provided at the bottom of the screw sleeve (6), and a plug-in (10) is installed at the bottom of the limiting locking ring (7). A slot (11) is provided inside the stator core (2).

2. A stepper motor stator according to claim 1, characterized in that: When the screw sleeve (6) is connected to the outer thread of the limiting screw shaft (5), the plug-in unit (10) at the bottom of the limiting lock ring (7) and the slot (11) inside the stator core (2) are in a limiting locking state.

3. A stepping motor stator according to claim 2, characterized in that: The top of the limiting lock ring (7) is provided with a mounting groove (8), the bottom of the screw sleeve (6) is provided with a connecting ring (9), and the bottom of the screw sleeve (6) is rotatably connected and matched with the mounting groove (8) inside the limiting lock ring (7) through the connecting ring (9).

4. A stepping motor stator according to claim 3, characterized in that: A screw hole (12) penetrating the limiting lock ring (7) is provided on the top of the screw sleeve (6), and the internal thread of the screw hole (12) is connected with a bolt (13) for limiting the limiting lock ring (7).

5. The stepping motor stator according to claim 2, characterized in that: A support portion (14) is integrally formed on the inner side of the stator core (2), a docking groove (15) is provided inside the support portion (14), the winding portion (3) is docked and assembled with the docking groove (15), a limiting rotary member (16) for limiting and fixing the winding portion (3) is provided above the support portion (14), a second circular hole (17) is provided inside the limiting rotary member (16), a connecting shaft (18) is installed above the support portion (14), and the limiting rotary member (16) is rotatably connected to the outer periphery of the connecting shaft (18) through the second circular hole (17).

6. A stepping motor, characterized in that: A stepping motor stator comprising any one of claims 1 to 5.

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