CN102562861B

CN102562861B - Overrunning clutch with flexible arms

Info

Publication number: CN102562861B
Application number: CN201210009576.5A
Authority: CN
Inventors: 夏齐霄; 余跃庆
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2012-01-12
Filing date: 2012-01-12
Publication date: 2014-06-25
Anticipated expiration: 2032-01-12
Also published as: CN102562861A

Abstract

An overrunning clutch with flexible arms belongs to the field of machinery and is characterized in that the overrunning clutch comprises an outer ring (1) and an inner ring (5), a through hole (2) for fixing the outer ring onto needed mechanical equipment is arranged on the outer ring (1), a plurality of flexible arms (4) are evenly distributed along the tangential direction of an outer circle of the inner ring (5), the end of each flexible arm (4) is connected with a diamond block (3), an obtuse angle of the diamond block (3) is connected with the flexible arms (4), and two adjacent edges forming an acute angle of the diamond block (3) are connected by means of arc transition. The overrunning clutch aims to overcome the shortcoming that a traditional overrunning clutch has numerous parts and is difficult in assembly and maintenance and unfavorable for microminiaturization. The overrunning clutch comprising only two parts can be applied to microminiature machinery, and transfers movement and small power, wherein the parts are suitably made of nylon or engineering plastics by means of injection molding.

Description

Overrunning clutch with flexible arms

Technical field

The present invention relates to a kind of free wheel device, belong to mechanical field.

Background technique:

Free wheel device is a kind of mechanical device that meets unidirectional delivery motion and power, is widely used in the machinery such as bicycle, lathe, impulse stepless gear box.Tradition free wheel device part is more, and structure is more complicated, is unfavorable for the use of microminiature machinery.

Summary of the invention:

The object of the invention is to: overcome traditional free wheel device part many, installation and maintenance difficulty, is unfavorable for the shortcoming of microminaturization, design a kind of and formed by two parts, can be applied to microminiature machinery, transmit the free wheel device of motion and low-power.Its part is suitable for forming by injection molding with nylon or engineering plastics.

Fig. 1 is the erection drawing of this kind of clutch.It is characterized in that: this kind of free wheel device has 2 part compositions, is respectively the inner ring 5 shown in the outer ring 1 shown in Fig. 2 and Fig. 3; On outer ring 1, there is through hole 2, for being fixed on required machinery; Along the uniform several submissive arms 4 of tangent direction of the cylindrical of inner ring 5; The end of submissive arm 4 connects a diamond block 3; Obtuse angle and the submissive arm 4 of diamond block 3 are connected, and the acutangulate adjacent two edges of diamond block 3 shape is connected by arc transition.

The working principle of the overrunning clutch with flexible arms that the present invention proposes is described below:

The inner ring of overrunning clutch with flexible arms uses elastic material to make, and before assembling, submissive arm 4 is rectilinear form.After assembling with outer ring 1, there is bending in submissive arm 4, and the bending elastic force producing is stuck between inner ring 5 and outer ring 1, as shown in Figure 1 diamond block 3.In position shown in Fig. 1, when outer ring 1 is driving link, while rotating counterclockwise, because outer ring 1 is contrary to the elastic force of diamond block 3 with submissive arm 4 to the frictional force of diamond block 3, diamond block 3 can not be by stuck to outer ring 1 and inner ring 5, so inner ring 5 does not rotate with outer ring 1.In the time that outer ring 1 clockwise rotates, identical to the elastic reaction direction of diamond block 3 with submissive arm 4 to the frictional force of diamond block 3, will there is clockwise direction minor rotation in diamond block 3, by stuck to inner ring 5 and outer ring 1, be moved in inner ring 5 and outer ring 1 simultaneously.In like manner, in the time that inner ring 5 is driving link, if inner ring 5 clockwise rotates, does not rotate with inner ring outer ring 1, and in the time that inner ring 5 rotates counterclockwise, rotate with inner ring 5 outer ring 1, thereby complete the function of free wheel device.

Brief description of the drawings

Fig. 1 overrunning clutch with flexible arms erection drawing.

Fig. 2 overrunning clutch with flexible arms outer ring parts drawing.

Fig. 3 overrunning clutch with flexible arms inner ring parts drawing.

Embodiment

Embodiment of the present invention as shown in Figure 1-Figure 3.In experiment, use nylon to make for material.Outer ring external diameter is 20mm, and outer ring internal diameter is 14mm, and the external diameter of inner ring is 7mm, and internal diameter is 4mm.Submissive arm thickness 0.6mm, diamond block length of side 2mm, acute angle is 45 °, radius is 0.4mm.In experiment, can transmit 16Nm moment.

Claims

1. overrunning clutch with flexible arms, is characterized in that: this kind of free wheel device has 2 part compositions, is respectively outer ring (1) and inner ring (5); On outer ring (1), be useful on the through hole (2) being fixed in required machinery; Along the uniform several submissive arms of tangent direction (4) of the cylindrical of inner ring (5); The end of each submissive arm (4) connects a diamond block (3); An obtuse angle and the submissive arm (4) of diamond block (3) are connected, and the acutangulate adjacent two edges of diamond block (3) shape is connected by arc transition; Acute angle is 45 ⁰.