Micro motor shaft

A micro-motor and rotating shaft technology, applied in shafts, couplings, shafts and bearings, etc., can solve problems such as inability to continue working, and achieve the effects of increasing life, improving safety, and avoiding breakage

Inactive Publication Date: 2017-06-23
CHONGQING TONGJIA ELECTRONICS TECH CO LTD
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AI-Extracted Technical Summary

Problems solved by technology

After the shaft breaks, the power output is com...
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Method used

Magnet block 5 is set, after connecting cylinder 103 fractures, transmission block 3 and square transmission hole 105 inwalls fit together, and transmission block 3 collides with square transmission hole 105 inwalls again when avoiding speed variation, has improved this rotating shaft life.
[0025] The rubber layer 4 is set to act as a buffer when the transmission block 3 c...
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Abstract

The invention discloses a micro-motor rotating shaft, which includes a rotating shaft and an inner shaft; the rotating shaft body includes an input section, a connecting cylinder and a transmission section, and one end of the transmission section close to the connecting cylinder is provided with a circular accommodation hole and a square transmission hole, and the square transmission hole It communicates with the circular accommodation hole; the inner shaft is located in the connecting cylinder, the inner shaft includes a first end and a second end, the first end of the inner shaft is connected with the input section, the second end of the inner shaft is located in the circular accommodation hole, and the inner shaft The outer surface of the second end of the shaft is not in contact with the circular receiving hole, and the second end of the inner shaft is also provided with a transmission block, the transmission block is located in the square transmission hole, and there is a gap between the outer surface of the transmission block and the inner wall of the square transmission hole ; The input section, the connecting cylinder, the transmission section, the circular accommodating hole and the inner shaft are coaxial; there is a gap between the inner shaft and the connecting cylinder. The present invention is provided with two sets of torque transmission components, the inner shaft and the connecting cylinder, and the torque is transmitted by the inner shaft after the connecting cylinder breaks and fails, so as to avoid the complete interruption of power output.

Application Domain

Yielding couplingShafts +1

Technology Topic

Micro motorEngineering +2

Image

  • Micro motor shaft
  • Micro motor shaft

Examples

  • Experimental program(4)

Example Embodiment

[0020] Example 1
[0021] like figure 1 and figure 2 As shown, the rotating shaft of the micro-motor includes a rotating shaft 1 and an inner shaft 2; the rotating shaft body 1 includes an input section 101, a connecting cylinder 102 and a transmission section 103, and the two ends of the connecting cylinder 102 are respectively connected with the input section 101 and the transmission section 103, and the transmission section 103 is provided with a circular accommodation hole 104 and a square transmission hole 105 at one end close to the connecting cylinder 102, the square transmission hole 105 communicates with the circular accommodation hole 104; the inner shaft 2 is located in the connecting cylinder 102, and the inner shaft 2 includes a first end and the second end, the first end of the inner shaft 2 is connected with the input section 101, the second end of the inner shaft 2 is located in the circular accommodation hole 104, and the outer surface of the second end of the inner shaft 2 is not connected with the circular accommodation hole 104 contact, the second end of the inner shaft 2 is also provided with a transmission block 3, the transmission block 3 is located in the square transmission hole 105, and there is a gap between the outer surface of the transmission block 3 and the inner wall of the square transmission hole 105; the input section 101, the connecting cylinder 102 , the transmission section 103 , the circular receiving hole 104 and the inner shaft 2 are coaxial; there is a gap between the inner shaft 2 and the connecting cylinder 102 .
[0022] The input section 101 is connected with the power output end of the micro-motor, and the transmission section 103 is connected with the equipment to be driven. During normal operation, the input section 101 drives the connecting cylinder 102, the transmission section 103 and the inner shaft 2 to rotate. Since the inner shaft 2 and the transmission block 3 do not contact the circular receiving hole 104 and the square transmission hole 105, the inner shaft 2 does not bear the load , the power of the micro-motor is output through the input section 101 , the connecting cylinder 102 and the transmission section 103 . After the connecting cylinder 102 breaks, the inner shaft 2 and the transmission section 103 rotate relative to each other, and the transmission block 3 is attached to the inner wall of the square transmission hole 105. At this time, the torque is transmitted by the inner shaft 2 and the transmission block 3, so as to drive the transmission section 103 to rotate . In this way, a complete interruption of the power output can be avoided.

Example Embodiment

[0023] Example 2
[0024] like figure 1 and figure 2 As shown, on the basis of Embodiment 1, this embodiment further includes a rubber layer 4 disposed on the inner wall of the square transmission hole 105 .
[0025] The rubber layer 4 is provided to act as a buffer when the transmission block 3 collides with the inner wall of the square transmission hole 105, so as to prevent the transmission block 3 from breaking and improve the reliability of the rotating shaft.

Example Embodiment

[0026] Example 3
[0027] like figure 1 and figure 2 As shown, on the basis of Embodiment 1, this embodiment further includes a magnet block 5 arranged in the transmission block 3 .
[0028] The magnet block 5 is set so that the transmission block 3 and the inner wall of the square transmission hole 105 are bonded together after the connecting cylinder 103 is broken, so that the transmission block 3 and the inner wall of the square transmission hole 105 are prevented from colliding again when the rotating speed is changed, and the life of the rotating shaft is improved.

PUM

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Description & Claims & Application Information

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