Miniature motor beneficial for improving stability

Abstract

A micro motor beneficial to improving stability comprises a motor body and a stabilizing assembly arranged on one side of the motor body, the motor body comprises a first shell and a rotating shaft, one end of the rotating shaft penetrates out of the first shell, and the other end of the rotating shaft penetrates out of the first shell. The stabilizing assembly comprises a second shell and a bearing, the second shell is arranged outside the end, penetrating out of the shell, of the rotating shaft in a covering mode, the bearing is arranged outside the rotating shaft in a sleeving mode, and the bearing and the first shell are arranged in a spaced mode. According to the micro motor beneficial to improving the stability, one side of the motor main body is provided with a stabilizing assembly to improve the stability of the rotating shaft, the tail end of the rotating shaft penetrates out of the first shell to form a rotating shaft extending end, and the rotating shaft extending end is fixedly sleeved with a rotating bearing; therefore, the rotating shaft can be prevented from being directly inserted into the first shell, so that friction vibration between the rotating shaft and the first shell during rotation can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, in particular to a micro motor which is beneficial to improving stability. Background Art

[0002] With the rapid development of science and technology, micro motors have been widely used in many fields, such as aerospace, medical equipment, robotics, automobile manufacturing, etc. Micro motors play an important role in precision control and task execution due to their small size, high efficiency, and low power consumption. One end of the rotating shaft of the micro motor is often directly riveted to the motor housing.

[0003] However, when the micro motor is running at high speed or the load changes, the riveted position of the rotating shaft and the housing is prone to vibration, and the riveted position is prone to wear due to long-term friction, further causing vibration at the connection position of the rotating shaft and the housing. Utility Model Content

[0004] In view of this, the utility model provides a micro motor which is beneficial to improving stability, so as to solve the above problems.

[0005] A micro motor that is conducive to improving stability, comprising a motor body and a stabilizing component arranged on one side of the motor body. The motor body comprises a first housing, a rotating shaft inserted in the first housing, a motor end cover sleeved outside the rotating shaft and spaced apart from the first housing, a terminal block spaced apart from one side of the first housing, and at least two bearings arranged between the rotating shaft and the motor end cover. One end of the rotating shaft passes through the first housing to form a rotating shaft extension end. The stabilizing component comprises a second housing covering the outside of the rotating shaft extension end, and a stabilizing bearing sleeved outside the rotating shaft extension end. The stabilizing bearing is rotatably sleeved in the second housing. The stabilizing bearing is spaced apart from the first housing.

[0006] Furthermore, a first annular groove and a second annular groove are spaced apart on the rotating shaft, a first limiting ring is respectively mounted in the first annular groove and the second annular groove, and the bearing is clamped between the two first limiting rings.

[0007] Furthermore, a third annular groove is provided on the rotating shaft, a second limiting ring is sleeved in the third annular groove, and one end of the motor end cover is in contact with the second limiting ring.

[0008] Furthermore, the bearings are respectively arranged at both ends of the motor end cover, and a side surface of one of the bearings is flush with the end of the motor end cover.

[0009] Further, the first annular groove is close to the first shell, and the groove depth of the first annular groove is shallower than the groove depth of the second annular groove.

[0010] Furthermore, a stator is fixedly disposed in the first shell, a mover is sleeved on the outside of the rotating shaft, the mover is a special-shaped mover, and one side of the mover is fixedly connected to the motor end cover.

[0011] Furthermore, the first shell and the second shell are of integrated design.

[0012] Compared with the prior art, the micro motor provided by the utility model is conducive to improving stability by arranging a stabilizing component on one side of the motor body to improve the stability of the rotating shaft. The end of the rotating shaft passes through the first shell to form a rotating shaft extension end. A stabilizing bearing is fixedly sleeved on the outside of the rotating shaft extension end, so as to avoid the rotating shaft being directly inserted into the first shell and causing the rotating shaft to rub and vibrate with the first shell during rotation. The stabilizing bearing can fix and limit the rotating shaft to ensure that the rotating shaft is not easy to vibrate and the end position is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model provides a front view of the micro motor which is beneficial to improving stability.

[0014] Figure 2 for Figure 1 A cross-sectional view of a micromotor that is beneficial for improving stability.

[0015] Figure 3 for Figure 1 A partial enlarged view of the micro motor at point A, which is beneficial to improving stability. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0017] like Figures 1 to 3 As shown, it is a schematic diagram of the structure of the micro motor that is conducive to improving stability provided by the utility model. The micro motor that is conducive to improving stability includes a motor body 10, and a stabilizing component 20 arranged on one side of the motor body 10. The micro motor that is conducive to improving stability also includes some other functional modules, such as a power supply structure arranged on one side of the motor body 10, etc., which should be well known to those skilled in the art and will not be described in detail one by one here.

[0018] The motor body 10 includes a first shell 11, a motor end cover 12 spaced apart at one side of the first shell 11, a rotating shaft 13 inserted into the first shell 11 and the motor end cover 12, a terminal block 14 spaced apart at one side of the first shell 11, two bearings 15 respectively arranged between the motor end cover 12 and the rotating shaft 13, a stator 16 fixedly arranged in the first shell 11, and a mover 17 sleeved outside the rotating shaft 13.

[0019] The first housing 11 is made of plastic or metal, such as iron and its alloys or aluminum and its alloys. The first housing 11 is open toward a side away from the stabilizing assembly 20 to protect the stator 16 and the mover 17 therein.

[0020] One end of the motor end cover 12 is arranged on a side of the wiring board 14 away from the first housing 11, and the other end passes through the wiring board 14 and extends into the first housing 11 along the rotating shaft 13. The motor end cover 12 is sleeved on the rotating shaft 13, and the cross section along the axis is trumpet-shaped.

[0021] A third annular groove 131 is provided at one end of the rotating shaft 13. The groove is an annular groove provided around the shaft body of the rotating shaft 13, and the groove opening direction is the radial direction of the rotating shaft 13. A second limiting ring 132 is sleeved in the third annular groove 131. The end surface of the second limiting ring 132 exceeds the side wall of the rotating shaft 13, that is, the thickness of the second limiting ring 132 is greater than the groove depth of the third annular groove 131, so as to limit the various structures provided on the rotating shaft 13. Accordingly, the end of the motor end cover 12 abuts against the second limiting ring 132.

[0022] The terminal block 14 is an annular plate-shaped structure. The terminal block 14 is mounted on the outer wall of the motor end cover 12 away from the axis, and the plane where the terminal block 14 is located is perpendicular to the axial direction of the rotating shaft 13. The terminal block 14 is used to connect the circuit, so as to provide a power source for the stator 16 or the mover 17.

[0023] The two bearings 15 are respectively arranged at the two ends of the motor end cover 12. The bearing 15 on the side away from the first housing 11 is flush with the end surface of the motor end cover 12 and abuts against one side of the second limiting ring 132 to limit the position.

[0024] The mover 17 is connected to the rotating shaft 13 and is spaced apart from the motor end cover 12. The mover 17 is a heterogeneous mover. It should be noted that since the stator 16 and the mover 17 are common structures in motors and are well known to those skilled in the art, they will not be described in detail here.

[0025] The stabilizing assembly 20 includes a rotating shaft extending end 21 located at one end of the rotating shaft 13 and extending out of the first shell 11, a second shell 22 covering the rotating shaft extending end 21, a first annular groove 23 and a second annular groove 24 opened on the rotating shaft extending end 21 of the first shell 11, a first limiting ring 25 respectively sleeved in the first annular groove 22 and the second annular groove 24, and a stabilizing bearing 26 sleeved outside the rotating shaft extending end 21 and located between the two first limiting rings 25.

[0026] The extending end 21 of the rotating shaft exceeds the first housing 11. The extending end 21 of the rotating shaft and the motor end cover 12 are respectively arranged on two sides of the first housing 11.

[0027] The second housing 22 and the first housing 11 are of an integrated design or a split structure with a sealed connection at the connection. The second housing 22 and the first housing 11 are made of the same material.

[0028] The distance between the first annular groove 23 and the side wall of the first housing 11 is greater than the distance between the second annular groove 24 and the first housing 11. The groove depth of the first annular groove 23 is greater than the groove depth of the second annular groove 24.

[0029] When the first limiting ring 25 is inserted into the first annular groove 23 and the second annular groove 24, the outer wall of the first limiting ring 25 exceeds the outer wall of the rotating shaft extension end 21. Since the groove depths of the first annular groove 23 and the second annular groove 24 are different, the exceeding heights are also different, so that a more stable limiting effect can be provided at the first annular groove 23 with a deeper groove depth.

[0030] The stabilizing bearing 26 is sleeved on the extending end 21 of the rotating shaft and is limited by the first limiting ring 25 to prevent displacement along the extending end 21 of the rotating shaft, so that the rotating shaft 13 remains stable during rotation. The outer wall of the stabilizing bearing 26 is fixedly connected to the inner wall of the second housing 22, so that the stabilizing bearing 26 is fixedly arranged in the second housing 22. When the rotating shaft 13 rotates, the stabilizing bearing 26 limits the vibration of the end of the rotating shaft 13.

[0031] Compared with the prior art, the micro motor provided by the utility model is conducive to improving stability. A stabilizing component 20 is arranged on one side of the motor body 10 to improve the stability of the rotating shaft 13. The end of the rotating shaft 13 passes through the first shell 11 to form a rotating shaft extension end 21. A stabilizing bearing 26 is fixedly sleeved on the outside of the rotating shaft extension end 21, so as to avoid the rotating shaft 13 being directly inserted into the first shell 11 and causing the rotating shaft 13 to rub and vibrate with the first shell 11 when rotating. The stabilizing bearing 26 can fix and limit the rotating shaft 13 to ensure that the rotating shaft 13 is not easy to vibrate and the end position is stable.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A micro motor that is beneficial to improving stability, characterized in that: The micro motor that is beneficial to improving stability includes a motor body and a stabilizing component arranged on one side of the motor body, the motor body includes a first shell, a rotating shaft inserted in the first shell, a motor end cover sleeved on the outside of the rotating shaft and spaced apart from the first shell, a terminal block spaced apart on one side of the first shell, and at least two bearings arranged between the rotating shaft and the motor end cover, one end of the rotating shaft passes through the first shell to form an extended end of the rotating shaft, the stabilizing component includes a second shell covering the outside of the extended end of the rotating shaft, and a stabilizing bearing sleeved on the outside of the extended end of the rotating shaft, the stabilizing bearing is rotatably sleeved in the second shell, and the stabilizing bearing is spaced apart from the first shell.

2. The micro motor for improving stability as claimed in claim 1, characterized in that: A first annular groove and a second annular groove are spaced apart on the rotating shaft. A first limiting ring is respectively inserted in the first annular groove and the second annular groove. The stabilizing bearing is clamped between the two first limiting rings.

3. The micro motor for improving stability as claimed in claim 1, characterized in that: A third annular groove is formed on the rotating shaft, a second limiting ring is sleeved in the third annular groove, and one end of the motor end cover is in contact with the second limiting ring.

4. The micro motor for improving stability as claimed in claim 1, characterized in that: The bearings are respectively arranged at two ends of the motor end cover, and a side surface of one of the bearings is flush with the end of the motor end cover.

5. The micro motor for improving stability as claimed in claim 2, characterized in that: The first annular groove is close to the first shell, and the groove depth of the first annular groove is shallower than the groove depth of the second annular groove.

6. The micro motor for improving stability as claimed in claim 1, characterized in that: A stator is fixedly arranged in the first shell, a mover is sleeved on the outside of the rotating shaft, the mover is a special-shaped mover, and one side of the mover is fixedly connected to the motor end cover.

7. The micro motor for improving stability as claimed in claim 1, characterized in that: The first shell and the second shell are of integrated design.

Images