CN212063690U

CN212063690U - Micromotor for ultrasonic wave

Info

Publication number: CN212063690U
Application number: CN202020605884.4U
Authority: CN
Inventors: 林跃锋
Original assignee: Jieyang Sanfeng Electric Machinery Co ltd
Current assignee: Jieyang Sanfeng Electric Machinery Co ltd
Priority date: 2020-01-11
Filing date: 2020-04-21
Publication date: 2020-12-01
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a research and development design technical field especially relates to a micromotor that can be used to ultrasonic wave, and the invention adopts following technical scheme: the pivot both ends of rotor correspond to wear to locate front end housing and rear end cap the rotor with the shell between set up first arc magnetic pole and second arc magnetic pole, the rotor be provided with the iron core, the iron core including set firmly in epaxial iron core main part, the iron core main part corresponds the arc mouth position of first arc magnetic pole set up first protrusion annular portion, the iron core corresponds the arc mouth position of second arc magnetic pole set up second protrusion annular portion first protrusion annular portion and iron core main part between and between second protrusion annular portion and the iron core main part respectively around being equipped with first winding and second winding, with current technical advantage lie in: the micromotor structure applied to ultrasonic waves has high positive and negative rotation speed, and the product quality is more stable and reliable.

Description

Micromotor for ultrasonic wave

The technical field is as follows:

the invention relates to the technical field of rotor research and development design, in particular to a micromotor capable of being used for ultrasonic waves.

Background art:

the ultrasonic micromotor is widely applied to the mechanical application fields of daily necessities, aerospace, aviation and the like, has the advantages of small volume, low speed, large torque, high reaction speed, no influence of a magnetic field, large holding torque and the like compared with the traditional motor, becomes a research hotspot in the aspect of miniature motors at home and abroad, and has the defects of poor product stability, complex structure, small power, short service life and the like based on the electric toothbrush on the market, so that further research and development improvement are needed.

The invention content is as follows:

an object of the present invention is to provide a micro-motor for ultrasonic waves, which solves at least one of the problems of the related art.

In order to achieve the purpose, the invention adopts the following technical scheme: a micromotor applied to ultrasonic waves is characterized in that: comprises a micro-motor main body, the micro-motor main body comprises a shell and a rotor arranged in the shell, the shell comprises an outer ring sleeve, a front end cover and a rear end cover which are correspondingly arranged on openings at two ends of the outer ring sleeve, two ends of a rotating shaft of the rotor correspondingly penetrate through the front end cover and the rear end cover, a first arc-shaped magnetic pole and a second arc-shaped magnetic pole are arranged between the rotor and the shell, the rotor is provided with an iron core, the iron core comprises an iron core main body fixedly arranged on the rotating shaft, the iron core main body is provided with a first protruding annular part corresponding to the arc opening position of the first arc-shaped magnetic pole, the iron core is provided with a second protruding annular part corresponding to the arc opening position of the second arc-shaped magnetic pole, and a first winding and a second winding are respectively wound between the first protruding annular part and the iron core main body and between the second protruding annular part and the iron core main body.

Optionally, a rotation limiting mechanism for limiting rotation of the rotor is disposed between the core body and the rear end cover.

Optionally, the rotation limiting mechanism includes a spiral spring mounted on the rear end cover, the spiral spring includes a spiral spring main body, and the rotor rotating shaft penetrates through a central portion of the spiral spring main body.

Optionally, the spiral spring body is provided with a rear protruding shaft protruding towards the rear end cover, the rear end cover is provided with a fixed shaft hole matched with the rear protruding shaft in diameter, and the spiral spring body is fixedly arranged in the fixed shaft hole through the rear protruding shaft.

Optionally, the rear protruding shaft is disposed above an end position of an outermost ring of the spiral spring body.

Optionally, the spiral spring body is provided with a front protruding shaft protruding towards the rotor, and the front protruding shaft is locked on the rotating shaft of the rotor through a locking member.

Optionally, the front protruding shaft is disposed on an end portion of an innermost ring of the spiral spring body.

As optional, the retaining member be silica gel layer cover, the preceding protruding axle pass through silica gel layer cover locking in the pivot of rotor.

The invention has the advantages that: the utility model provides a be applied to ultrasonic micromotor structure, has higher positive and negative speed to can further keep apart power anodal lead wire and power negative pole lead wire and avoid its wearing and tearing back contact volute spiral spring to lead to the electric leakage based on silica gel layer cover, especially because the continuous positive and negative rotation of rotor pivot leads to the enameled wire wearing and tearing and produces the damage fracture, so that the quality of product is more stable and reliable.

Description of the drawings:

FIG. 1 is a perspective view of a micro-motor;

FIG. 2 is a schematic diagram of a micro-machine main view;

FIG. 3 is a cross-sectional view of the micro-motor 1;

FIG. 4 is a cross-sectional view of the micro-machine 1;

fig. 5 is an exploded view of the micro-machine.

The specific implementation mode is as follows:

example 1: referring to fig. 1-5, a micro-motor applied to ultrasonic waves comprises a micro-motor body a, the micro-motor body a comprises a housing 1 and a rotor 2 arranged in the housing 1, the housing 1 comprises an outer ring sleeve, and a front end cover 11 and a rear end cover 12 correspondingly arranged on openings at two ends of the outer ring sleeve, two ends of a rotating shaft 20 of the rotor 2 correspondingly penetrate through the front end cover 11 and the rear end cover 12, a first arc-shaped magnetic pole 13 and a second arc-shaped magnetic pole 14 are arranged between the rotor 2 and the housing 1, the rotor 2 is provided with an iron core, the iron core comprises an iron core body fixedly arranged on the rotating shaft, a first protruding annular part 21 is arranged at an arc opening position of the iron core body 201 corresponding to the first arc-shaped magnetic pole 13, a second protruding annular part 22 is arranged at an arc opening position of the iron core corresponding to the second arc-shaped magnetic pole 14, a first winding 23 and a second winding 24 are respectively wound between the first protruding annular portion 21 and the core body and between the second protruding annular portion 22 and the core body.

Based on this embodiment, when the first protruding annular portion is an S pole, the second protruding annular portion is an N pole, and when the first protruding annular portion is an N pole, the second protruding annular portion is an S pole, and the interaction with the first arc-shaped magnetic pole and the second arc-shaped magnetic pole realizes the forward and reverse rotation of the rotor at a high frequency.

Optionally, a rotation limiting mechanism for limiting the rotation of the rotor is disposed between the iron core main body 201 and the rear end cover 12, and in a preferred embodiment, the rotation limiting mechanism includes a spiral spring 4 mounted on the rear end cover 12, the spiral spring 4 includes a spiral spring main body 40, and the rotating shaft 20 of the rotor 2 is inserted through a central portion of the spiral spring main body 40.

Optionally, in a preferred embodiment, the spiral spring body 40 is provided with a rear protruding shaft 41 protruding toward the rear end cover 12, the rear end cover 12 is provided with a fixing shaft hole 121 matching with the rear protruding shaft 41 in diameter, and the spiral spring body 40 is fixed in the fixing shaft hole 121 through the rear protruding shaft 41 to limit the movement of the rear protruding shaft 121.

Optionally, the rear protruding shaft 121 is disposed on an end portion of the outermost ring of the spiral spring body 40 to generate a larger damping force, and specifically, the position of the front protruding shaft may be modified accordingly according to the requirements of different damping forces and disposed on other positions of the spiral spring.

Optionally, the spiral spring body 40 is provided with a front protruding shaft 42 protruding toward the rotor, the front protruding shaft 42 is locked on the rotating shaft 20 of the rotor 2 through a locking member, and is made to pass through the locking member so as to make the rotating shaft of the rotor rotationally drive the spiral spring, and make the inner ring of the spiral spring rotate, and because the spiral spring exists, the spiral spring is limited to rotate in the same direction, so that resistance for limiting the rotation of the rotating shaft of the rotor is generated, and a rebound acting force is generated to make the rotating shaft of the rotor rotate, and the above operation process is continuously repeated under the condition that the first winding and the second winding of the micro-motor are electrified.

Alternatively, in a preferred embodiment, the front protruding shaft 42 is disposed on the end of the innermost ring of the spiral spring body 40 to generate a larger damping force, and particularly, the position of the front protruding shaft can be modified accordingly according to the requirements of different damping forces and disposed on other positions of the spiral spring.

As an option, the locking member is a silica gel layer sleeve 5, and the front protruding shaft 42 is locked on the rotating shaft 20 of the rotor 2 through the silica gel layer sleeve 5, so that the rotating shaft 20 of the rotor 2 can further synchronously drive the spiral spring to transmit power when rotating.

Optionally, in a preferred embodiment, the silicone rubber layer 5 extends from the spiral spring body to the iron core body 201 to better wrap the rotating shaft and the front protruding shaft of the spiral spring.

Optionally, in a preferred embodiment, the thickness of the silicone rubber layer 5 disposed on the front protruding shaft 42 and the rotor 20 of the rotating shaft 2 is 3-5 mm.

Optionally, the silica gel layer sleeve 5 disposed on the front protruding shaft 42 and the rotor 20 of the rotating shaft 2 is 704 silica gel layer sleeve, which has better insulating property and connection stability.

Optionally, the diameter of the silica gel layer sleeve disposed on the front protruding shaft and the rotor of the rotating shaft is larger than the diameter of the inner annular hole in the central portion of the spiral spring main body, so that the spiral spring can be further limited to move or shake relative to the rotor rotating shaft, and the spiral spring is limited between the rotor and the rear end cover.

Optionally, the front end cover and/or the rear end cover are provided with bearings matched with the diameter of the rotating shaft of the rotor, so that the rotating shaft of the rotor is smooth when the housing rotates.

Optionally, in a preferred embodiment, the housing includes an upper side plate, a lower side plate, and a left side annular plate and a right side annular plate disposed on two sides of the upper side plate and the lower side plate, and the first arc-shaped magnetic pole and the second arc-shaped magnetic pole are correspondingly disposed on the left side annular plate and the right side annular plate, so as to cooperate with the first arc-shaped magnetic pole and the second arc-shaped magnetic pole to be fixedly disposed on the housing, and make the overall structure of the micro-motor more compact.

Optionally, in a preferred embodiment, the first electrode lead 15 of the first winding 13 and the second electrode lead 16 of the second winding 14 respectively pass through the through hole of the outer end cap 12 to connect to the positive power plate and the negative power plate disposed on the outer end cap, based on the application of the silicone layer sleeve, the positive power lead and the negative power lead are generally enameled wires, and the silicone layer sleeve can further isolate the positive power lead and the negative power lead from contacting the spiral spring after being worn to cause electric leakage, especially damage and fracture caused by the abrasion of the enameled wires due to continuous positive and negative rotation of the rotor shaft, so as to make the quality of the product more stable and reliable.

Optionally, in a preferred embodiment, a coupling shaft 3 is provided, a side of the coupling shaft 3 corresponding to the rotor rotation shaft has a jack section 31, and the rotor 2 rotation shaft 20 is inserted into the jack section 31.

Alternatively, in a preferred embodiment, the linking shaft 3 includes a jack section 31 and a flat section connected to the jack section 31.

Optionally, in a preferred embodiment, the flat section of the trace shaft includes a first flat section 32 and a second flat section 33, and a lower inclined step 34 is provided between the first flat section 32 and the second flat section 33.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A micromotor for ultrasound, characterized in that: comprises a micro-motor main body, the micro-motor main body comprises a shell and a rotor arranged in the shell, the shell comprises an outer ring sleeve, a front end cover and a rear end cover which are correspondingly arranged on openings at two ends of the outer ring sleeve, two ends of a rotating shaft of the rotor correspondingly penetrate through the front end cover and the rear end cover, a first arc-shaped magnetic pole and a second arc-shaped magnetic pole are arranged between the rotor and the shell, the rotor is provided with an iron core, the iron core comprises an iron core main body fixedly arranged on the rotating shaft, the iron core main body is provided with a first protruding annular part corresponding to the arc opening position of the first arc-shaped magnetic pole, the iron core is provided with a second protruding annular part corresponding to the arc opening position of the second arc-shaped magnetic pole, and a first winding and a second winding are respectively wound between the first protruding annular part and the iron core main body and between the second protruding annular part and the iron core main body.

2. A micromotor for ultrasound according to claim 1, characterized in that: and a rotation limiting mechanism which is limited to the rotation of the rotor is arranged between the iron core main body and the rear end cover.

3. A micromotor for ultrasound according to claim 2, characterized in that: the rotation limiting mechanism comprises a volute spiral spring arranged on the rear end cover, the volute spiral spring comprises a volute spiral spring main body, and the rotor rotating shaft penetrates through the central part of the volute spiral spring main body.

4. A micromotor for ultrasound according to claim 3, characterized in that: the spiral spring body is provided with a rear convex shaft protruding towards the rear end cover, the rear end cover is provided with a fixed shaft hole matched with the rear convex shaft in diameter, and the spiral spring body is fixedly arranged in the fixed shaft hole through the rear convex shaft.

5. A micromotor for ultrasound according to claim 4, characterized in that: the rear protruding shaft is arranged on the end part of the outermost ring of the spiral spring main body.

6. A micromotor for ultrasound according to claim 5, characterized in that: the volute spiral spring main part be provided with toward the bellied front protruding axle of rotor direction, the front protruding axle pass through retaining member locking in the pivot of rotor.

7. A micromotor for ultrasound according to claim 6, characterized in that: the front protruding shaft is arranged on the end part of the innermost ring of the spiral spring body.

8. A micromotor for ultrasound according to claim 7, characterized in that: the retaining member be silica gel layer cover, preceding protruding axle pass through silica gel layer cover locking in the pivot of rotor.