Multidirectional motion motor and implementation method thereof

Abstract

Disclosed is a multidirectional motion motor, comprising a rotating motor body, wherein two ends of the exterior of a machine housing are connected to protruding blocks; an end side of each protruding block is connected to an axial elastic piece; an outer ring of the axial elastic piece is connected to a supporting housing; the two supporting housings are connected by means of a side plate; one of the supporting housings is connected to a tailstock, and the interior of the tailstock is connected to an axial driving coil; and a shaft is connected to an axial driving magnetic steel group corresponding to the axial driving coil. Further disclosed is an implementation method of the multidirectional motion motor. According to the present invention, the rotating motor body is used as a vibrator for axial movement, the degree of freedom of axial movement is provided by the axial elastic piece, and the axial elastic piece enables the vibrator moving in the axial direction to be suspended so that the friction force borne by the vibrator is reduced. The degree of freedom of the rotating movement of the shaft is provided by a bearing, so that the friction force borne by the shaft during rotating movement is greatly reduced, thereby improving the performance of the multidirectional motor.

Description

A multi-directional motion motor and implementation method thereof Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a multi-directional motion motor and an implementation method thereof. Background Art

[0002] With the rapid advancement of science and technology, people's living standards have gradually improved, and more and more automated equipment has been integrated into people's lives. Electric toothbrushes have also been widely accepted by people because of their better cleaning intensity.

[0003] The mainstream electric toothbrushes on the market now mostly use small-angle reciprocating motion motors as the mainstream solution. As the core component of the electric toothbrush, the motor has a huge impact on the function of the electric toothbrush. As customers' requirements for products increase, the single swinging toothbrush motor can no longer meet customers' multi-scenario and multi-style needs.

[0004] Therefore, it is urgent to develop a multi-directional motion motor to meet customer needs. During the actual development process, it was found that the multi-directional motion motor using powder metallurgy sliding bearings will inevitably have a certain degree of offset in the actual assembly, causing the motor rotor to be attracted by the stator core and deviate to one side. This will greatly increase the positive pressure of the shaft on the powder metallurgy sliding bearing, resulting in a large friction between the motor shaft and the sliding bearing, which greatly reduces the performance of the multi-directional motion motor.

[0005] Summary of the Invention

[0006] The present invention aims to provide a multi-directional motion motor to solve the problems mentioned in the background art. The multi-directional motion motor provided by the present invention has the characteristics of being able to use traditional deep groove ball bearings, greatly reducing the friction of the rotational freedom, while achieving the multi-directional motion function of the motor.

[0007] Another object of the present invention is to provide a method for realizing a multi-directional motion motor.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-directional motion motor, comprising a rotating motor body, the rotating motor body comprising a casing, the interior of the casing being connected to a shaft via a bearing, the inner wall of the casing being connected to a stator assembly, the shaft being connected to a rotor assembly corresponding to the stator assembly, the two ends of the exterior of the casing being respectively connected to protrusions, the end sides of the protrusions being connected to axial spring pieces, the outer rings of the axial spring pieces being connected to a supporting shell, the two supporting shells being connected by side plates, one of the supporting shells being connected to a tailstock, the interior of the tailstock being connected to an axial drive coil, and the shaft being connected to an axial drive magnetic steel group corresponding to the axial drive coil.

[0009] In order to facilitate the assembly of the bearing, the stator core and the housing, the housing further includes a left-right symmetrical two-part structure.

[0010] In order to greatly reduce the friction force suffered by the shaft during rotational motion, the bearing is further configured as a deep groove ball bearing, and the bearing is connected to the inside of the boss of the casing.

[0011] In order to drive the motor to rotate, the stator assembly further includes a stator core, on which a rotation driving coil is wound, and the rotor assembly includes a rotor core, on which a plurality of rotation driving magnets are connected.

[0012] In order to serve as a winding support frame for the rotating drive coil, it can also support and fix the rotating drive coil. The rotating drive coil can also be separated from the stator core to ensure its insulation reliability. Furthermore, a frame is connected to the stator core, and the rotating drive coil is wound on the frame.

[0013] In order to increase the driving force of the axial movement, the axial driving magnet group further includes two axial driving magnets, and a pole piece is provided between the two axial driving magnets.

[0014] In order to raise the side plates and avoid contact between the side plates and the casing, thereby avoiding friction between the casing and the side plates during axial movement, a pad is further connected between the side plates and the support shell.

[0015] In order to provide a welding surface for the connection between the protrusion and the axial elastic piece, a blocking piece is further connected to the end side of the protrusion, and the blocking piece is connected to the inner ring of the axial elastic piece.

[0016] In order to ensure the flatness and stability of the axial drive coil after bonding, thereby ensuring the axial driving force, a tailstock assembly positioning surface is further provided on the periphery of the tailstock, and an axial drive coil wire end avoidance groove is provided inside the tailstock.

[0017] In order to facilitate the lead-out of the wire end of the rotation drive coil and facilitate power supply, further, the housing and the protrusion are provided with a rotation drive coil lead-out hole.

[0018] Furthermore, in the present invention, the method for realizing a multi-directional motion motor comprises the following steps:

[0019] (1) The shaft is connected to the housing through a bearing, and the rotor assembly on the shaft and the stator assembly inside the housing cooperate with the drive shaft to rotate, forming the rotating motor body;

[0020] (2) The axial spring piece connects the housing to the supporting shell through the protrusion, and the two supporting shells are connected by the side plate. The rotating motor body is used as the vibrator of axial movement, and the axial spring piece provides the elastic force for axial reciprocating movement;

[0021] (3) A tailstock is connected to one of the supporting shells, an axial drive coil is connected to the inside of the tailstock, an axial drive magnetic steel group corresponding to the axial drive coil is connected to the shaft, and the axial drive magnetic steel group cooperates with the axial drive coil to drive the rotating motor body to perform axial movement.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention realizes multi-directional vibration of the motor by cooperating with the drive shaft to rotate through the rotor assembly and the stator assembly, and cooperating with the drive shaft to move axially through the axial drive coil and the axial drive magnetic steel group;

[0024] 2. The present invention uses the rotating motor body as an axially moving vibrator. The axial movement freedom is provided by the axial spring piece. The axial spring piece suspends the axially moving vibrator, reducing the friction force on the vibrator. The freedom of the shaft rotation is provided by the bearing, so that the friction force on the shaft during rotation is also greatly reduced, thereby improving the performance of the multi-directional motor.

[0025] 3. The housing of the present invention comprises a two-part symmetrical structure, which facilitates the assembly of the bearing, stator core and housing;

[0026] 4. The bearing of the present invention is a deep groove ball bearing, which is connected to the inside of the boss of the housing, so that the friction force on the shaft during rotation is greatly reduced;

[0027] 5. A pad is connected between the side plate and the supporting shell of the present invention. The pad is used to raise the side plate to prevent the side plate from contacting the housing, thereby avoiding friction between the housing and the side plate during axial movement.

[0028] 6. The tailstock of the present invention is provided with a tailstock assembly positioning surface on its periphery, and an axial drive coil wire end avoidance groove is provided inside the tailstock, which ensures the flatness and stability of the axial drive coil after bonding, thereby ensuring the axial driving force. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is an exploded schematic diagram of the structure of the present invention;

[0030] FIG2 is a schematic cross-sectional view of the present invention;

[0031] FIG3 is a schematic cross-sectional view of the rotating electrical machine body of the present invention;

[0032] FIG4 is a schematic structural diagram of the tailstock of the present invention;

[0033] FIG5 is a schematic structural diagram of a bump according to the present invention;

[0034] FIG6 is a schematic structural diagram of an axial drive magnetic steel group according to the present invention;

[0035] FIG7 is a schematic diagram of the electromagnetic drive for rotary motion of the present invention;

[0036] FIG8 is a schematic diagram of the electromagnetic drive for axial motion according to the present invention;

[0037] In the figure: 1. Support shell; 2. Axial spring piece; 3. Bump; 31. Housing boss assembly positioning surface; 32. Rotary drive coil lead-out hole; 4. Housing; 5. Skeleton; 6. Rotary drive coil; 7. Rotary drive magnet; 8. Axial drive magnet group; 81. Axial drive magnet; 82. Pole piece; 9. Tail stock; 91. Tail stock assembly positioning surface; 92. Axial drive coil wire end avoidance groove; 10. Axial drive coil; 11. Shaft; 12. Pad; 13. Side plate; 14. Stator core; 15. Bearing; 16. Baffle; 17. Rotor core. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0039] Example 1

[0040] Please refer to Figures 1-8. The present invention provides the following technical solutions: a multi-directional motion motor, including a rotating motor body, the rotating motor body including a housing 4, the interior of the housing 4 is connected to a shaft 11 through a bearing 15, the inner wall of the housing 4 is connected to a stator assembly, the shaft 11 is connected to a rotor assembly corresponding to the stator assembly, the two ends of the exterior of the housing 4 are respectively connected to a protrusion 3, the protrusion 3 is provided with a housing boss assembly positioning surface 31, the housing boss assembly positioning surface 31 and the housing boss of the housing 4 form an axial hole positioning assembly, fixed and bonded by glue, the end side of the protrusion 3 is connected to the shaft The outer ring of the axial spring piece 2 and the support shell 1 are connected by laser welding. The two support shells 1 are connected by a side plate 13. There are two side plates 13 in total. The two side plates 13 are symmetrically connected on both sides of the support shell 1. One of the support shells 1 is connected to a tailstock 9, and the inside of the tailstock 9 is connected to an axial drive coil 10. The material of the axial drive coil 10 is self-adhesive enameled copper wire. The wound axial drive coil 10 is fixed to the inner wall of the tailstock 9 by glue, and the shaft 11 is connected to an axial drive magnetic steel group 8 corresponding to the axial drive coil 10.

[0041] By adopting the above technical solution, the present invention realizes multi-directional vibration of the motor by cooperating the rotor assembly and the stator assembly to drive the shaft 11 for rotational motion, and cooperating the axial drive coil 10 and the axial drive magnetic steel group 8 to drive the shaft 11 for axial motion; the present invention uses the rotating motor body as an axially moving vibrator, and the freedom of axial motion is provided by the axial spring piece 2. The axial spring piece 2 suspends the axially moving vibrator, reducing the friction force on the vibrator. The freedom of rotational motion of the shaft 11 is provided by the bearing 15, so that the friction force on the shaft 11 during rotational motion is also greatly reduced, thereby improving the performance of the multi-directional motor.

[0042] Specifically, the housing 4 includes two symmetrical parts.

[0043] By adopting the above technical solution, the assembly of the bearing 15 and the stator core 14 with the housing 4 is facilitated.

[0044] Specifically, the bearing 15 is a deep groove ball bearing, and the bearing 15 is fixed inside the boss of the housing 4 by riveting.

[0045] By adopting the above technical solution, the friction force on the shaft 11 during rotation is greatly reduced.

[0046] Specifically, the stator assembly includes a stator core 14, which is bonded to the inner wall of the casing 4 by glue. A rotating drive coil 6 is wound on the stator core 14, and the rotating drive coil 6 is made of enameled copper wire. Two rotating drive coils 6 are connected in series. The rotor assembly includes a rotor core 17, and the rotor core 17 is fixedly connected to the shaft 11 by riveting and gluing. Four rotating drive magnets 7 are connected to the rotor core 17, and the rotating drive magnets 7 are bonded to the rotor core 17 by glue to provide a magnetic field for the rotational motion.

[0047] By adopting the above technical solution, the rotation drive coil 6 is energized to generate an electric field, which interacts with the magnetic field generated by the rotation drive magnet 7 to drive the motor to rotate.

[0048] Specifically, the axial drive magnet group 8 includes two axial drive magnets 81 , a pole piece 82 is provided between the two axial drive magnets 81 , and the two axial drive magnets 81 and the pole piece 82 are bonded to the shaft 11 by glue.

[0049] By adopting the above technical solution, the driving force of axial movement is increased.

[0050] Example 2

[0051] The difference between this embodiment and the first embodiment is that: specifically, the stator core 14 is connected to the skeleton 5 , and the rotation drive coil 6 is wound on the skeleton 5 .

[0052] By adopting the above technical solution, the skeleton 5 serves as a winding support frame for the rotary drive coil 6, and at the same time supports and fixes the rotary drive coil 6, and can also separate the rotary drive coil 6 from the stator core 14 to ensure the reliability of its insulation.

[0053] Example 3

[0054] The difference between this embodiment and the first embodiment is that: specifically, a pad 12 is connected between the side plate 13 and the supporting shell 1, and the side plate 13, the pad 12 and the supporting shell 1 are fixed by laser welding.

[0055] By adopting the above technical solution, the side plate 13 is raised by the pad 12 to prevent the side plate 13 from contacting the casing 4, so that the rotating motor body serving as the axial motion vibrator is suspended in the gap between the two side plates 13, providing movement space for the axial motion vibrator, while also protecting the axial motion motor vibrator and facilitating subsequent client assembly.

[0056] Example 4

[0057] The difference between this embodiment and embodiment 1 is that: specifically, a baffle 16 is connected to the end side of the protrusion 3, and the baffle 16 is connected to the protrusion 3 by glue bonding or direct insert injection molding. This embodiment is preferably glue bonding, and the baffle 16 is connected to the inner ring of the axial spring piece 2 by laser welding.

[0058] By adopting the above technical solution, the blocking piece 16 provides a welding surface for the connection between the protrusion 3 and the axial elastic piece 2 .

[0059] Example 5

[0060] The difference between this embodiment and embodiment 1 is that: specifically, a tailstock assembly positioning surface 91 is provided on the periphery of the tailstock 9, the tailstock 9 is fixed by riveting the tailstock assembly positioning surface 91 and the inner surface of the housing 4, and an axial drive coil wire end avoidance groove 92 is provided inside the tailstock 9.

[0061] By adopting the above technical solution, the flatness and stability of the axial drive coil 10 after bonding are ensured, thereby ensuring the axial driving force.

[0062] Specifically, the housing 4 and the protrusion 3 are both provided with a rotation drive coil lead-out hole 32 .

[0063] By adopting the above technical solution, it is convenient to lead out the wire end of the rotation drive coil 6, so as to facilitate power supply.

[0064] Example 6

[0065] Furthermore, the method for realizing a multi-directional motion motor according to the present invention comprises the following steps:

[0066] (1) The shaft 11 is connected to the housing 4 through the bearing 15. The rotor assembly on the shaft 11 and the stator assembly inside the housing 4 cooperate to drive the shaft 11 to rotate, forming the rotating motor body;

[0067] (2) The axial spring piece 2 connects the housing 4 to the supporting shell 1 through the protrusion 3. The two supporting shells 1 are connected by the side plate 13. The rotating motor body is used as the vibrator of axial movement, and the axial spring piece 2 provides the elastic force for axial reciprocating movement;

[0068] (3) A tailstock 9 is connected to one of the support shells 1, an axial drive coil 10 is connected to the interior of the tailstock 9, an axial drive magnetic steel group 8 corresponding to the axial drive coil 10 is connected to the shaft 11, and the axial drive magnetic steel group 8 and the axial drive coil 10 cooperate to drive the rotating motor body to perform axial movement.

[0069] In summary, the present invention realizes multi-directional vibration of the motor by cooperating with the drive shaft 11 to perform rotational motion through the rotor assembly and the stator assembly, and cooperating with the drive shaft 11 to perform axial motion through the axial drive coil 10 and the axial drive magnetic steel group 8; the present invention uses the rotating motor body as an axially moving vibrator, and the freedom of axial motion is provided by the axial spring piece 2. The axial spring piece 2 makes the axially moving vibrator suspended in the air, reducing the friction force on the vibrator, and the freedom of rotational motion of the shaft 11 is provided by the bearing 15, so that the friction force on the shaft 11 during rotational motion is also greatly reduced, thereby improving the performance of the multi-directional motor; the housing 4 of the present invention includes a left-right symmetrical two-part structure, which is convenient for the bearing 15 to and the assembly of the stator core 14 and the casing 4; the bearing 15 of the present invention is a deep groove ball bearing, and the bearing 15 is connected to the inside of the boss of the casing 4, so that the friction force on the shaft 11 during rotational movement is greatly reduced; a pad 12 is connected between the side plate 13 of the present invention and the support shell 1, and the side plate 13 is raised by the pad 12 to avoid contact between the side plate 13 and the casing 4, thereby avoiding friction between the casing 4 and the side plate 13 during axial movement; a tailstock assembly positioning surface 91 is provided on the periphery of the tailstock 9 of the present invention, and an axial drive coil wire end avoidance groove 92 is provided inside the tailstock 9, which ensures the flatness and stability of the axial drive coil 10 after bonding, thereby ensuring the axial driving force.

[0070] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-directional motion motor, comprising a rotating motor body, characterized in that: The rotating motor body includes a casing, the interior of the casing is connected to a shaft through a bearing, the inner wall of the casing is connected to a stator assembly, the shaft is connected to a rotor assembly corresponding to the stator assembly, the two ends of the outer casing are respectively connected to bumps, the end sides of the bumps are connected to axial spring pieces, the outer ring of the axial spring pieces is connected to a supporting shell, the two supporting shells are connected by a side plate, one of the supporting shells is connected to a tailstock, the interior of the tailstock is connected to an axial driving coil, and the shaft is connected to an axial driving magnetic steel group corresponding to the axial driving coil.

2. A multi-directional motion motor according to claim 1, characterized in that: The housing comprises two parts which are symmetrical on both sides. The bearing is a deep groove ball bearing which is connected inside the boss of the housing.

3. A multi-directional motion motor according to claim 1, characterized in that: The stator assembly comprises a stator core, on which a rotation driving coil is wound; the rotor assembly comprises a rotor core, on which a plurality of rotation driving magnets are connected.

4. A multi-directional motion motor according to claim 3, characterized in that: The stator core is connected with a frame, and the rotation driving coil is wound on the frame.

5. The multi-directional motion motor according to claim 1, characterized in that: The axial drive magnet group includes two axial drive magnets, and a pole piece is arranged between the two axial drive magnets.

6. The multi-directional motion motor according to claim 1, characterized in that: A pad is connected between the side plate and the supporting shell.

7. The multi-directional motion motor according to claim 1, characterized in that: A blocking piece is connected to the end side of the protrusion, and the blocking piece is connected to the inner circle of the axial elastic piece.

8. The multi-directional motion motor according to claim 1, characterized in that: A tailstock assembly positioning surface is arranged on the periphery of the tailstock, and an axial drive coil wire end avoidance groove is arranged inside the tailstock.

9. The multi-directional motion motor according to claim 1, characterized in that: The housing and the convex block are both provided with a rotation drive coil lead-out hole.

10. A method for realizing a multi-directional motion motor according to any one of claims 1 to 9, characterized in that: The following steps are involved: (i) The shaft is connected to the housing through a bearing, and the rotor assembly on the shaft and the stator assembly inside the housing cooperate with the drive shaft to rotate, forming the rotating motor body; (ii) The axial spring piece connects the casing to the supporting shell through a protrusion, and the two supporting shells are connected through a side plate. The rotating motor body is used as a vibrator for axial movement, and the axial spring piece provides elastic force for axial reciprocating movement; (iii) A tailstock is connected to one of the supporting shells, an axial drive coil is connected to the interior of the tailstock, an axial drive magnetic steel group corresponding to the axial drive coil is connected to the shaft, and the axial drive magnetic steel group cooperates with the axial drive coil to drive the rotating motor body to perform axial movement.

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