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Transmission mechanism

A technology of transmission mechanism and transmission screw, which is applied in transmission devices, mechanical equipment, belts/chains/gears, etc., and can solve problems such as inability to transmit torque

Active Publication Date: 2011-06-15
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Another kind of transmission realizes axial movement in both positive and negative directions, but cannot transmit torque, such as screw transmission

Method used

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Embodiment Construction

[0023] Please combine figure 1 shown. The present invention has a transmission screw 1, one end of which is externally threaded, the other end is cylindrical and a plurality of platforms 11 are processed on it, the specific number of platforms can be increased or decreased depending on the actual situation, and when the transmission torque is large or the frequency of use is high The number of platforms can be increased, and vice versa, the number of platforms can be appropriately reduced, but the number of platforms should not be less than three, and they should be arranged at equal angles. These platforms all form a wedge angle 12 with the inner diameter of drive nut 4 (see image 3 with Figure 5 ). The size of the wedge angle should not self-lock with the roller (ball) during screw transmission, and not slip when torque is transmitted.

[0024] The inner diameter of drive nut 4 of the present invention has internal thread (see Figure 4 ), the direction of rotation of...

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Abstract

The invention relates to a transmission mechanism which comprises a transmission screw, an external thread is arranged at one end, a plurality of platforms are processed on the other end which is cylindrical, and the platforms and the inner diameter of the transmission nut form a wedge angle; the transmission mechanism further comprises a transmission nut, and the revolving direction of an internal thread is consistent with that of the external thread of the transmission screw; the external thread of the transmission screw is meshed with the internal thread of the transmission nut; a roller or a rolling ball is mounted on each platform, a spring is mounted between each roller or the rolling ball and the side wall of the corresponding platform, and the springs prop against the rollers or the rolling balls; bearings are respectively sheathed at two ends on the outside of the transmission nut; and the transmission mechanism is mounted in a bearing seat through the bearings. The transmission mechanism can solve the problems that the spiral transmission can only transfer the axial displacement and can not transfer the torque, while an overrunning clutch can only transfer the torque andcan not transfer the axial displacement.

Description

technical field [0001] The present invention relates to a transmission mechanism, in particular to a transmission mechanism that transmits torque in forward rotation (reverse direction) and realizes axial movement in reverse (forward) rotation. Background technique [0002] In the current transmission mechanism, one is the forward (or reverse) rotation transmission torque, and the reverse (or forward) rotation is a lost motion, such as an overrunning clutch. Generally, one end shaft hole of the overrunning clutch is connected to the driving shaft, and the other end shaft hole of the overrunning clutch is connected to the driven shaft. When the driving shaft rotates, the driven shaft also rotates synchronously; when the driven shaft is subjected to external torque, it cannot rotate clockwise or counterclockwise, and cannot achieve axial movement. The overrunning clutch is often used as an anti-reverse mechanism. [0003] Another kind of transmission realizes axial movement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H35/00
Inventor 王珂任维佳王士达
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI