Motor stator assembly of double-rotor sound wave motor

Abstract

The utility model discloses a motor stator assembly of a double-rotor sound wave motor, which comprises a motor casing, a stator body is mounted in the motor casing, a plurality of positioning blocks are arranged on the inner wall of the motor casing in a surrounding manner, and a plurality of positioning grooves matched with the positioning blocks in structure are arranged on the outer wall of the stator body in a surrounding manner. A positioning groove is formed in the outer wall of the motor shell, screw blocks are arranged at the edge openings of the front end and the rear end of the positioning groove, locking screw shafts are connected into the screw blocks in a penetrating mode, penetrating sleeves corresponding to the screw blocks in position are arranged at the front end and the rear end of the positioning block, fixing blocks are arranged at the positions, corresponding to the positioning blocks, of the outer wall of the motor shell, and pre-pressing blocks are arranged on the outer sides of the fixing blocks. The motor stator assembly of the double-rotor sound wave motor can be more stably fixed in the motor shell, and the position precision and stability under high-speed vibration are ensured, so that the overall performance and reliability of the motor are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sonic wave motors, in particular to a stator assembly of a dual-rotor sonic wave motor. Background Art

[0002] The dual-rotor sonic motor is a specially designed electric motor. Its core feature is that it uses two relatively independent and synchronously operated rotor structures, and achieves efficient and accurate power output by generating high-frequency sonic vibrations. This type of motor is often used in fields with high requirements for vibration frequency, amplitude stability and response speed, such as oral care (electric toothbrush), precision cleaning equipment, medical ultrasonic treatment equipment, etc.

[0003] The stator assembly is an important component of the dual-rotor sonic motor. It provides support, guidance, energy transfer, feedback and other functions for the normal operation of the motor. However, since this type of motor will generate strong high-frequency vibrations when working, it places extremely high requirements on the installation stability and position retention of the stator assembly. The existing stator assembly fixing methods often have problems such as low vibration transmission efficiency, easy loosening, and insufficient positioning accuracy, which affect the overall performance and reliability of the motor. Utility Model Content

[0004] The purpose of the utility model is to provide a dual-rotor sonic motor stator assembly to solve the problems raised in the above-mentioned background technology that the current dual-rotor sonic motor stator assembly fixing method often faces the problems of low vibration transmission efficiency, easy loosening, insufficient positioning accuracy, etc. These defects seriously affect the overall performance and reliability of the motor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-rotor sonic motor stator assembly, comprising a motor casing, a stator body installed inside the motor casing, a plurality of positioning blocks arranged around the inner wall of the motor casing, a plurality of positioning grooves matching the positioning block structure arranged around the outer wall of the stator body, screw blocks are arranged at the front and rear ends of the positioning groove, a locking screw shaft is inserted and connected inside the screw block, and sleeves corresponding to the position of the screw block are arranged at the front and rear ends of the positioning block, and solid blocks are arranged at positions corresponding to the positioning blocks on the outer wall of the motor casing, and pre-compression blocks are arranged on the outside of the solid blocks.

[0006] Preferably, a plurality of through holes are provided around both the front and rear ends of the motor housing, and the through holes on the motor housing correspond one by one to the positions of the sleeves.

[0007] Preferably, an adjusting stud is inserted and connected in the middle of the solid block through a threaded structure, and one end of the adjusting stud located on the inner side of the solid block is connected to the middle of the back side of the pre-pressing block.

[0008] Preferably, a limiting shaft is symmetrically provided on the outer side of the solid block, and both sides of the pre-pressing block are slidably sleeved on the outside of the limiting shaft.

[0009] Preferably, a plurality of damping blocks are evenly arranged around the inner wall of the motor housing, and a plurality of concave openings matching the damping block structure are arranged around the outer wall of the stator body.

[0010] Preferably, the middle of the pre-pressing block is an arc-shaped structure, and a rubber pad is provided on the inner wall of the arc-shaped structure in the middle of the pre-pressing block.

[0011] Compared with the prior art, the utility model has the beneficial effect that the stator assembly of the dual-rotor sonic motor can be more firmly fixed in the motor housing, ensuring the position accuracy and stability under high-speed vibration, thereby ensuring the overall performance and reliability of the motor. The stator assembly of the dual-rotor sonic motor is pre-positioned through the positioning groove and the positioning block arranged on the inner wall of the motor housing, and the stator body can be further locked under the mutual cooperation of the locking screw shaft, the screw block and the sleeve, and the pre-pressure block arranged on the outer wall of the motor housing can apply a certain radial pre-pressure by tightening the outer end of the locking screw shaft to ensure the stability of the stator body when it is installed in the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a stator assembly of a dual-rotor sonic motor of the utility model;

[0013] Figure 2 The utility model is a dual-rotor sonic motor stator assembly Figure 1 The enlarged structural diagram at A in the middle;

[0014] Figure 3 It is a schematic diagram of the external structure of a motor housing of a stator assembly of a dual-rotor sonic motor of the utility model;

[0015] Figure 4 The utility model is a schematic diagram of the side view of the motor housing of the stator assembly of a dual-rotor sonic motor.

[0016] In the figure: 1. Motor housing; 2. Stator body; 3. Positioning block; 4. Positioning groove; 5. Screw block; 6. Locking screw shaft; 7. Sleeve; 8. Damping block; 9. Solid block; 10. Pre-load block; 11. Limiting shaft; 12. Adjusting stud. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides a technical solution: a dual-rotor sonic motor stator assembly, including a motor casing 1, a plurality of heat sinks are fixedly connected around the outer wall of the motor casing 1, a stator body 2 is installed inside the motor casing 1, and the stator body 2 mainly consists of an iron core, a winding and a base, four positioning blocks 3 are arranged around the inner wall of the motor casing 1, and the positioning blocks 3 and the motor casing 1 form an integrated structure, and four positioning grooves 4 that match the structure of the positioning blocks 3 are arranged around the outer wall of the stator body 2, and screw blocks 5 are welded and fixed at the edges of the front and rear ends of the positioning grooves 4, and a locking screw shaft 6 is inserted and connected to the inside of the screw block 5 through a threaded structure, and sleeves 7 corresponding to the positions of the screw blocks 5 are arranged at the front and rear ends of the positioning block 3, and the outer wall of the motor casing 1 is provided with a screw block 5 that matches the structure of the positioning block 3. The corresponding positions of the positioning blocks 3 are all welded and fixed with solid blocks 9, and there are four solid blocks 9. The outer side of the solid blocks 9 is provided with pre-compression blocks 10. When the motor casing 1 of this structure installs the stator body 2 inside it, the positioning blocks 3 can be embedded in the positioning grooves 4 for pre-positioning, and the locking screw shaft 6 can pass through the sleeve 7 and the motor casing 1 by rotating inside the screw block 5 until the outer end of the locking screw shaft 6 passes through the outside of the motor casing 1. The pre-compression block 10 can be adjusted on the outer side of the solid block 9 to tighten the outer end of the locking screw shaft 6 to apply a certain radial pre-pressure to the locking screw shaft 6, so that the stator body 2 can be more firmly fixed in the motor casing 1, so that the stator body 2 is always in a compressed state during the vibration process, further enhancing its stability and effectively The invention solves the problems of low vibration transmission efficiency, easy loosening, insufficient positioning accuracy, etc. existing in the stator fixing method, significantly improves the operation stability and position accuracy of the dual-rotor sonic motor under high-speed and high-frequency vibration conditions, and enhances the overall performance and reliability of the motor. Four through holes are arranged around the front and rear ends of the motor casing 1, and the through holes on the motor casing 1 correspond to the positions of the sleeves 7 one by one. The through holes on the motor casing 1 of this structure can cooperate with the outer ends of the locking screw shafts 6 to penetrate to the outside of the motor casing 1. An adjusting stud 12 is inserted and connected in the middle of the solid block 9 through a threaded structure, and the end of the adjusting stud 12 located on the inner side of the solid block 9 is connected to the middle of the back side of the pre-compression block 10. The outer side of the solid block 9 is symmetrically provided with limit shafts 11, and both sides of the pre-compression block 10 are sliding. The movable sleeve is arranged on the outside of the limit shaft 11. The adjusting stud 12 of this structure will push the pre-load block 10 when it rotates on the solid block 9. When the pre-load block 10 is subjected to force, both ends will slide along the outside of the limit shaft 11 to move, so that the pre-load block 10 can realize the effect of lateral tightening of the outer end of the locking screw shaft 6. Four damping blocks 8 are evenly bonded and fixed on the inner wall of the motor housing 1. The damping blocks 8 are made of high-performance damping materials, such as silicone rubber, viscoelastic polymers, etc., and four concave strips that match the structure of the damping blocks 8 are arranged on the outer wall of the stator body 2. The motor housing 1 of this structure can embed the damping blocks 8 into the concave strips on the outer wall of the stator body 2, which enables the damping blocks 8 to absorb and dissipate part of the vibration energy and reduce the amplitude of the vibration transmitted to the stator body 2.Improve the running stability of the stator body 2. The damping block 8 can also play a buffering role and reduce the stress concentration caused by assembly error or thermal expansion. The middle of the pre-pressing block 10 is an arc-shaped structure, and a rubber pad is provided on the inner wall of the arc-shaped structure in the middle of the pre-pressing block 10. The pre-pressing block 10 of this structure can be more closely pressed against the outer end of the adjusting stud 12 to achieve a better tightening effect.

[0019] Working principle: When using the dual-rotor sonic motor stator assembly, first when the stator body 2 needs to be installed inside the motor casing 1, the positioning groove 4 is aligned with the positioning block 3 when the stator body 2 is embedded, and the concave strips on the outer wall of the stator body 2 are aligned with the damping block 8, until the stator body 2 is placed inside the motor casing 1 as a whole to complete the initial positioning, and then the locking screw shaft 6 is rotated on the screw block 5 respectively. When the locking screw shaft 6 rotates, it will successively penetrate the sleeve 7 and the through hole on the motor casing 1 until the outer end of the locking screw shaft 6 extends to the outside of the motor casing 1. At this time, the adjusting stud 12 is rotated again. When the adjusting stud 12 rotates on the solid block 9, it will push the pre-load block 10. When the pre-load block 10 is subjected to force, both ends will slide along the outside of the limit shaft 11 for displacement until the middle part of the pre-load block 10 is laterally pressed against the outer end of the locking screw shaft 6 to apply a certain radial pre-pressure. In this way, the stator body 2 will be more firmly fixed in the motor housing 1, and the stator body 2 will be more stable during the vibration process. The damping block 8 can also absorb and dissipate part of the vibration energy, so that the stator body 2 can run more smoothly, thereby completing a series of tasks.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dual-rotor sonic motor stator assembly, comprising a motor housing (1), wherein a stator body (2) is installed inside the motor housing (1), characterized in that: A plurality of positioning blocks (3) are arranged around the inner wall of the motor housing (1), a plurality of positioning grooves (4) which are structurally matched with the positioning blocks (3) are arranged around the outer wall of the stator body (2), screw blocks (5) are arranged at the edges of the front and rear ends of the positioning grooves (4), a locking screw shaft (6) is inserted and connected inside the screw block (5), and sleeves (7) corresponding to the positions of the screw blocks (5) are arranged at the front and rear ends of the positioning blocks (3), and fixed blocks (9) are arranged at positions corresponding to the positioning blocks (3) on the outer wall of the motor housing (1), and pre-pressing blocks (10) are arranged on the outer sides of the fixed blocks (9).

2. A dual-rotor sonic motor stator assembly according to claim 1, characterized in that: A plurality of through holes are arranged around both the front and rear ends of the motor housing (1), and the through holes on the motor housing (1) correspond to the positions of the sleeves (7) one by one.

3. The dual-rotor sonic motor stator assembly according to claim 1, characterized in that: An adjusting stud (12) is inserted and connected in the middle of the solid block (9) via a threaded structure, and one end of the adjusting stud (12) located inside the solid block (9) is connected to the middle of the back side of the pre-pressing block (10).

4. A dual-rotor sonic motor stator assembly according to claim 3, characterized in that: The outer side of the solid block (9) is symmetrically provided with a limiting shaft (11), and both sides of the pre-pressing block (10) are slidably sleeved on the outside of the limiting shaft (11).

5. The dual-rotor sonic motor stator assembly according to claim 1, characterized in that: A plurality of damping blocks (8) are evenly arranged around the inner wall of the motor housing (1), and a plurality of concave openings matching the structure of the damping blocks (8) are also arranged around the outer wall of the stator body (2).

6. The dual-rotor sonic motor stator assembly according to claim 1, characterized in that: The middle of the pre-pressing block (10) is an arc-shaped structure, and a rubber pad is provided on the inner wall of the arc-shaped structure in the middle of the pre-pressing block (10).

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