阅读说明：本技术 一种往复转动的电机 (Reciprocating rotation motor ) 是由 王小林 于 2019-11-14 设计创作，主要内容包括：本发明涉及一种往复转动的电机。所述电机包括电机外壳、定子组件、转子组件、端盖、限位组件；所述限位组件布置于端盖与电机外壳所包围的空间处；所述限位组件包含布置于第一位置的第一磁体,布置于第二位置的第二磁体,以及可随转子组件转动而于第一磁体、第二磁体之间的摆动区摆动的活动磁体,所述活动磁体与第一磁体、第二磁体的同向的磁极相互对置；所述转子组件、活动磁体与第一磁体、第二磁体之间的磁力使电机与电源断开连接时转子组件的转轴复位到往复转动的中间位置。活动磁体与第一磁体、第二磁体之间的磁力可支持电机的转轴在往复转动的换向,该方式减轻电机的负担,缩短换向时间,且电机使用寿命长。(The invention relates to a reciprocating rotary motor. The motor comprises a motor shell, a stator assembly, a rotor assembly, an end cover and a limiting assembly; the limiting assembly is arranged in a space surrounded by the end cover and the motor shell; the limiting assembly comprises a first magnet arranged at a first position, a second magnet arranged at a second position, and a movable magnet which can swing in a swing area between the first magnet and the second magnet along with the rotation of the rotor assembly, and the magnetic poles of the movable magnet, the first magnet and the second magnet in the same direction are opposite to each other; and the magnetic force among the rotor assembly, the movable magnet, the first magnet and the second magnet enables the rotating shaft of the rotor assembly to reset to the middle position of reciprocating rotation when the motor is disconnected with the power supply. The magnetic force between the movable magnet and the first magnet and between the movable magnet and the second magnet can support the reversing of the rotating shaft of the motor in reciprocating rotation, the mode reduces the burden of the motor, shortens the reversing time and has long service life.)

1. A reciprocating rotary electric motor comprising:

a motor housing;

a stator assembly disposed at an inner surface of the motor housing;

a rotor assembly rotatably disposed in a space formed at a center of the stator assembly;

an end cap coupled with the motor housing;

the limiting assembly is arranged in a space surrounded by the end cover and the motor shell; the limiting assembly comprises a first magnet arranged at a first position, a second magnet arranged at a second position, and a movable magnet which can swing in a swing area between the first magnet and the second magnet along with the rotation of the rotor assembly, and the magnetic poles of the movable magnet, the first magnet and the second magnet in the same direction are opposite to each other;

and the magnetic force among the rotor assembly, the movable magnet, the first magnet and the second magnet enables the rotating shaft of the rotor assembly to reset to the middle position of reciprocating rotation when the motor is disconnected with the power supply.

2. A reciprocating rotary electric motor as defined in claim 1, wherein: the first magnet, the second magnet and the movable magnet are equal in radial distance with the axis of the rotating shaft.

3. A reciprocating rotary electric motor as defined in claim 2, wherein: when the rotor assembly rotates to the reciprocating rotation middle position, the magnetic force between the rotor assembly and the first magnet and between the rotor assembly and the second magnet is equal.

4. A reciprocating rotary electric motor as defined in claim 1, wherein: the first magnet and the second magnet are fixed in a mounting hole formed in the end cover.

5. A reciprocating rotary electric motor as defined in claim 1, wherein: the limiting assembly further comprises a mounting seat fixedly connected with the rotating shaft, and the movable magnet is fixed in a mounting through hole formed in the mounting seat.

6. A reciprocating rotary electric motor as defined in claim 5, wherein: the mounting seat is detachably fixed on the rotating shaft through a screw.

7. A reciprocating rotary electric motor as defined in claim 1, wherein: the end cap is mounted with a bearing, and a rotating shaft of the rotor assembly is coupled with an outer side of the end cap through a shaft hole formed at a center of an inner ring of the bearing.

Technical Field

The invention relates to the technical field of motors, in particular to a motor capable of realizing reciprocating rotation.

Background

In a reciprocating motor, a helical spring is used for supporting the reversing of a motor rotating shaft in reciprocating rotation, the mode reduces the burden of the motor and shortens the reversing time. However, in the motor, two ends of the coil spring need to be fixedly connected with the motor shell and the rotating shaft respectively, so that the assembly efficiency is low, the rejection rate is high, and the coil spring is easy to fatigue and damage in the reciprocating rotation at high frequency, which affects the service life.

Disclosure of Invention

In view of the above, the present invention has been made to provide a reciprocating rotary electric motor that overcomes or at least partially solves the above problems.

The reciprocating rotation motor structurally comprises:

a motor housing;

a stator assembly disposed at an inner surface of the motor housing;

a rotor assembly rotatably disposed in a space formed at a center of the stator assembly;

an end cap coupled with the motor housing;

the limiting assembly is arranged in a space surrounded by the end cover and the motor shell; the limiting assembly comprises a first magnet arranged at a first position, a second magnet arranged at a second position, and a movable magnet which can swing in a swing area between the first magnet and the second magnet along with the rotation of the rotor assembly, and the magnetic poles of the movable magnet, the first magnet and the second magnet in the same direction are opposite to each other;

and the magnetic force among the rotor assembly, the movable magnet, the first magnet and the second magnet enables the rotating shaft of the rotor assembly to reset to the middle position of reciprocating rotation when the motor is disconnected with the power supply.

Optionally, the first magnet, the second magnet, and the movable magnet are equidistant from the axis of the rotating shaft.

Optionally, when the rotor assembly rotates to the reciprocating rotation intermediate position, the magnetic force between the rotor assembly and the first magnet and between the rotor assembly and the second magnet is equal.

Optionally, the first magnet and the second magnet are fixed in a mounting hole formed in the end cover.

Optionally, the limiting assembly further comprises a mounting seat fixedly connected with the rotating shaft, and the movable magnet is fixed in a mounting through hole formed in the mounting seat.

Optionally, the mounting seat is detachably fixed on the rotating shaft through a screw.

Alternatively, the end cap is mounted with a bearing, and a rotating shaft of the rotor assembly is coupled with an outer side of the end cap through a shaft hole formed at a center of an inner ring of the bearing.

The invention has the following beneficial effects:

in this embodiment, the magnetic force between the rotor assembly and the movable magnet and between the first magnet and the second magnet enables the rotating shaft of the rotor assembly to reset to the reciprocating rotation middle position when the motor is disconnected from the power supply, so as to ensure the power-off reset centering of the motor. The magnetic force between the movable magnet and the first magnet and between the movable magnet and the second magnet can support the reversing of the rotating shaft of the motor in reciprocating rotation, the mode reduces the burden of the motor, shortens the reversing time and has long service life.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a cross-sectional view of one embodiment of a reciprocating motor of the present application;

FIG. 2 is an assembly view of the rotor assembly, end cap, and stop assembly of FIG. 1;

description of reference numerals: 1. a motor housing; 2. an end cap; 3. a stator; 4. enamelled wires; 5. a protective sleeve; 6. a rotating shaft; 7. a rotating magnet; 8. a bearing; 9. a first magnet; 10. a second magnet; 11. a movable magnet; 12. a supporting seat; 13. and (7) mounting a seat.

Detailed Description

The terms of orientation of upper, lower, left, right, front, rear, inner, outer, top, bottom, and the like, which are or may be referred to in this specification, are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state thereof. Therefore, these and other directional terms should not be construed as limiting terms.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprises," "comprising," and any variations thereof, are intended to cover non-exclusive inclusions.

Referring initially to fig. 1, an exemplary embodiment of a reciprocating motor according to the present invention is shown. Referring to fig. 1, the reciprocating motor structurally comprises a motor housing 1, a stator assembly, a rotor assembly, an end cover 2 and a limiting assembly.

Wherein the motor housing 1 forms a front end opening.

The stator assembly is arranged on the inner surface of the motor housing 1 and comprises a stator 3 and an enameled wire 4, wherein the enameled wire 4 is wound on a winding slot of the stator 3 to form a winding group of each magnetic pole of the stator 3. The stator assembly further comprises insulating protective sleeves 5 sleeved at two ends of the stator 3. In an alternative embodiment, the stator assembly may further include a stator, an enamel wire wound around the front and rear insulating end covers to form a winding group of each magnetic pole of the stator, and a front insulating end cover and a rear insulating end cover having a leg portion embedded in a winding slot of the stator. Of course, the stator assembly may take other configurations, which are not described herein.

The rotor assembly is rotatably disposed in a space formed at the center of the stator assembly and includes a rotating shaft 6, and a rotating magnet 7 fixedly coupled to the rotating shaft 6. In an alternative embodiment, the rotor assembly may further include a rotating shaft, and a rotor sheet and a magnetic steel fixed to the rotating shaft. Of course, the rotor assembly may take other configurations, which are not described herein.

The end cap 2 is coupled to the front end of the motor housing 1. In this embodiment, a bearing 8 is installed in the bearing chamber of the end cap 2, and the output end of the rotating shaft 6 passes through a shaft hole formed in the center of an inner ring of the bearing 8 and is coupled with the outer side of the end cap 2; a bearing 8 is installed in a bearing chamber of the motor housing 1, and the other end of the rotating shaft 6 penetrates through a shaft hole formed in the center of an inner ring of the bearing 8.

The limiting assembly is arranged in a space surrounded by the end cover 2 and the motor shell 1. The limiting assembly comprises a first magnet 9 arranged at a first position, a second magnet 10 arranged at a second position, and a movable magnet 11 which can swing in a swing area between the first magnet 9 and the second magnet 10 along with the rotation of the rotor assembly, wherein the magnetic poles of the movable magnet 11, the first magnet 9 and the second magnet 10 in the same direction are opposite to each other.

Specifically, as shown in fig. 2, a generally V-shaped supporting seat 12 is formed in the middle of the end cover 2 and extends toward one side of the motor housing 1, two mounting holes are formed in the supporting seat 12, and the first magnet 9 and the second magnet 10 are respectively fixed to the respective mounting holes, for example, the first magnet 9 and the second magnet 10 are fixed to the respective mounting holes by screws, adhesives, or by interference fit.

Spacing subassembly still contains the mount pad 13 with pivot 6 fixed connection, activity magnet 11 is fixed in the installation through-hole that forms in mount pad 13, and is same, between pivot 6 and the mount pad 13, can fix through modes such as screw, viscose or adoption interference fit between activity magnet 11 and the installation through-hole.

Since the magnetic poles of the movable magnet 11 in the same direction as the first magnet 9 and the second magnet 10 are opposite to each other, for example, the south pole (S pole) of the movable magnet 11 is opposite to the south pole (S pole) of the first magnet 9, and the north pole (N pole) of the movable magnet 11 is opposite to the north pole (N pole) of the second magnet 10, the magnetic potential energy between the movable magnet 11 and the first magnet 9 gradually increases and the magnetic potential energy between the movable magnet 11 and the second magnet 10 gradually decreases during the approach of the movable magnet 11 to the first magnet 9, and the magnetic potential energy between the movable magnet 11 and the first magnet 9 reaches a maximum value at the commutation position, and the magnetic potential energy promotes the reverse rotation of the rotating shaft 6; similarly, during the process of the movable magnet 11 approaching the second magnet 10, the magnetic potential energy between the movable magnet 11 and the second magnet 10 gradually increases, while the magnetic potential energy between the movable magnet 11 and the first magnet 9 gradually decreases, and the magnetic potential energy between the movable magnet 11 and the second magnet 10 reaches a maximum value at the commutation, and the magnetic potential energy promotes the reverse rotation of the rotating shaft 6. Therefore, the limiting assembly supports the reversing of the rotating shaft 6 in reciprocating rotation, the burden of the motor is reduced, and the reversing time is shortened.

Preferably, the first magnet 9 and the second magnet 10 are identical, and the first magnet 9, the second magnet 10 and the movable magnet 11 are at the same radial distance from the axis of the rotating shaft 6. It should be understood that although fig. 2 shows that the number of the first magnet 9, the second magnet 10, and the movable magnet 11 is one, the number of the first magnet 9, the second magnet 10, and the movable magnet 11 may be 2, 3, 4, etc.

When the motor is disconnected from the power supply, the magnetic force between the rotor assembly and the movable magnet 11 and the first and second magnets 9 and 10 restores the rotating shaft 6 of the rotor assembly to the intermediate position of the reciprocating rotation. Specifically, when the rotor assembly rotates to the reciprocating rotation intermediate position, the magnetic force between the rotor assembly and the first and second magnets 9 and 10 is equal, the magnetic force between the movable magnet 11 and the first and second magnets 9 and 10 is equal, and under the action of the magnetic force between the rotor assembly and the movable magnet 11 and the first and second magnets 9 and 10, when the motor is disconnected from the power supply, no matter which position the rotating shaft 6 is located, the rotor assembly can be quickly reset to the reciprocating rotation intermediate position.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present 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.