Search

CN-121993509-A - Spring clutch device

CN121993509ACN 121993509 ACN121993509 ACN 121993509ACN-121993509-A

Abstract

The invention discloses a spring clutch device which comprises an inner shaft, an outer shaft, a spring, an inner shaft bushing, a spring bushing, a friction pair, a flat plate bearing and a trigger element, wherein the inner shaft is a long cylinder, the spring is sleeved on the inner shaft, the inner shaft bushing is cylindrical with an inner step and fixed on the right side of the spring, the outer shaft is cylindrical with an inner middle step, the spring bushing is cylindrical with an inner step and fixed on the left side of the spring, the friction pair is more than one group and is arranged between the spring bushing and the radial direction of a large hole section on the left side of the outer shaft step, the flat plate bearing is arranged on the left side of the friction pair and is in contact with an outer plate or an inner plate on the outermost side, and the trigger element is arranged on the left side of the flat plate bearing and is in contact with the flat plate bearing. The invention has the beneficial technical effects that the clutch of the large-momentum rotating shaft is realized by smaller driving force and driving distance, the sensitivity of the clutch control of the large-momentum rotating shaft is effectively improved, and the high-frequency clutch of the large-momentum rotating shaft can be realized.

Inventors

  • LI JING
  • FAN KENIU
  • FAN WUQIONG

Assignees

  • 重庆帕特龙智通电子科技股份有限公司

Dates

Publication Date
20260508
Application Date
20260323

Claims (7)

  1. 1. A spring clutch device is characterized by comprising an inner shaft, an outer shaft, a spring, an inner shaft bushing, a spring bushing, a friction pair, a flat plate bearing and a trigger element; the inner shaft is a long cylinder; the spring is sleeved on the inner shaft, the winding direction of the spring is opposite to the rotating direction of the inner shaft or the outer shaft, the inner shaft bushing is cylindrical with an inner step and is fixed on the right side of the spring, the small hole section of the inner shaft bushing is tightly matched with the inner shaft, the large hole section of the inner shaft bushing is tightly matched with the outer circle of the right section of the spring, the outer shaft is cylindrical with an inner middle step, the inner circle of the step section is slidably matched with the outer circle of the step section of the spring, the large hole section on the right side of the step is fixedly arranged on the inner shaft bushing through a bearing, the inner circle surface of the large hole section on the left side of the step is provided with a plum blossom-shaped tooth socket, the spring bushing is cylindrical with an inner step and is fixed on the left side of the spring, the small hole section of the spring is tightly matched with the left Duan Waiyuan of the spring through a bearing, the outer circle surface of the spring bushing is provided with a plum blossom-shaped tooth socket, the friction pair is more than one group and is arranged between the spring bushing and the large hole section on the left side of the step, each group of friction pair comprises an outer disc and an inner disc, the outer disc is in a plum-shaped annular tooth socket, the inner disc is arranged on the outer disc, the inner disc is provided with a plum-shaped tooth socket is arranged on the outer disc, the inner disc is matched with the inner disc, and is matched with the flat disc, and is arranged on the flat disc, which is in the flat disc, and the flat disc is arranged on the contact with the flat disc.
  2. 2. The spring clutch device of claim 1, wherein the trigger element is an electromagnet, a piezoelectric ceramic, or a linear motor.
  3. 3. The spring clutch device according to claim 1 or 2, wherein a clearance between the inner circle of the outer shaft step section and the outer circle of the spring in sliding fit is 0.01-0.50 mm.
  4. 4. The spring clutch device according to claim 1 or 2, wherein the inner and outer circles of the spring are each ground structures with high dimensional accuracy and high surface finish.
  5. 5. A spring clutch device according to claim 1 or 2, wherein the spring is wound side by side with two wires, and the pitch of the spring is larger than the diameter of the wound wires and is arranged 180 degrees circumferentially.
  6. 6. A spring clutch device according to claim 1 or 2, wherein the spring is wound side by side with three wires, and the pitch of the spring is larger than the diameter of the wound wires and is arranged at 120 degrees on the circumference.
  7. 7. Spring clutch device according to claim 1 or 2, characterized in that the cross-sectional shape of the wound wire of the spring is rectangular.

Description

Spring clutch device Technical Field The invention relates to clutch technology, in particular to a spring clutch device. Background Friction clutches are the most widely used and also the longest history type of clutch. The most fundamental components of such clutches are friction plates and plates (also known as pressure plates) that disengage and engage to effect the transmission of power. The friction clutch mainly comprises a driving part, a driven part, a pressing mechanism and an operating mechanism. The driving and driven parts and the pressing mechanism are basic structures for ensuring that the clutch is in an engaged state and can transmit power, and the operating mechanism of the clutch is mainly a device for disengaging the clutch. During the disengagement process, the clutch pedal is depressed, the free clearance of the clutch is first eliminated during the free stroke, then the disengagement clearance is generated during the working stroke, and the clutch is disengaged. During the engagement process, the clutch pedal is gradually released, the pressure plate moves forward under the action of the compression spring, the separation gap is firstly eliminated, sufficient compression force is acted on the pressure plate, the driven plate and the working surface of the flywheel, and then the separation bearing moves backward under the action of the return spring, so that a free gap is generated, and the clutch is engaged. In order to ensure that enough pressing force acts on the working surfaces of the pressing plate, the driven plate and the flywheel, a preset pressure mode is generally adopted, so that when the pressing plate, the driven plate and the flywheel are combined, the preset pressure acts on the working surfaces of the pressing plate, the driven plate and the flywheel. Therefore, the friction clutch in the prior art has the advantages of complex structure, low sensitivity and high manufacturing cost, and the process of engaging or disengaging power is not easy to control. Disclosure of Invention In view of the above problems, the present invention provides a spring clutch device. The invention discloses a spring clutch device which comprises an inner shaft, an outer shaft, a spring, an inner shaft bushing, a spring bushing, a friction pair, a flat plate bearing and a trigger element, wherein the inner shaft is a long cylinder, the spring is sleeved on the inner shaft, the winding direction of the spring is opposite to the rotation direction of the inner shaft or the outer shaft, the inner shaft bushing is cylindrical with an inner step and is fixed on the right side of the spring, the small hole section of the inner shaft bushing is tightly matched with the outer circle of the right section of the spring, the outer shaft is cylindrical with an inner middle step, the inner circle of the step section of the outer shaft is slidably matched with the outer circle of the spring middle section, the large hole section on the right side of the step is fixedly arranged on the inner shaft bushing through a bearing, the inner circle surface of the step left large hole section of the inner shaft is provided with a plum blossom-shaped tooth socket, the spring bushing is cylindrical with an inner step, the small hole section of the spring is fixedly arranged on the left side of the spring through a bearing, the plum blossom-shaped tooth socket is tightly matched with the outer circle surface of the spring left Duan Waiyuan, the friction pair is arranged between one group and the outer circle socket and the left side of the step large hole section of the spring, the friction pair is in a contact piece between the outer circle surface of the friction pair and the outer circle surface of the friction pair is in a sheet shape, the circle-shaped piece is matched with the inner circle surface of the flat plate, and the friction pair is arranged on the outer circle surface of the friction pair is matched with the outer circle surface of the flat plate. Further, the triggering element is an electromagnet, piezoelectric ceramic or a linear motor. Further, the clearance between the inner circle of the outer shaft step section and the outer circle of the spring in sliding fit is 0.01-0.50 mm. Furthermore, the inner circle and the outer circle of the spring are both ground structures with high dimensional accuracy and high surface finish. Further, the springs are formed by winding two steel wires side by side, the pitch of the springs is larger than the diameter of the wound steel wires, and the springs are arranged at 180 degrees on the circumference. Further, the spring is formed by winding three steel wires side by side, and the pitch of the spring is larger than the diameter of the wound steel wires and is arranged at 120 degrees on the circumference. Further, the cross section of the wound steel wire of the spring is rectangular. The spring clutch device has the beneficial technical effects that the clutch o