CN2177127Y

CN2177127Y - Peach shape, fist shape wedge mixed single way super clutch

Info

Publication number: CN2177127Y
Application number: CN 93224582
Authority: CN
Inventors: 孔庆堂; 王修彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-21
Filing date: 1993-09-21
Publication date: 1994-09-14
Anticipated expiration: 2003-09-21

Abstract

The utility model provides a peach shape and a fist shape wedges mixed single way overrunning clutch, which is composed of an inner ring, an outer ring, a peach shape wedge, a fist shape wedge, a cushion ring, springs (or wire loops), an elastic collar. The peach shape wedge and the fist shape wedge are arranged between the inner ring and the outer ring regularly. The inner part of slots of both ends of the wedges are respectively provided with one spring (or one elastic wire loop). The utility model has the advantages of compact structure, big load bearing torque, long service life, high reliability, and good performance. Besides, the load bearing torque of the utility model is from 2.2 times to 2.5 times as great as the load bearing torque of the single type wedge clutch, and is from 11 times to 15 times as great as the load bearing torque of the roller type clutch with the same dimensions.

Description

Peach shape, fist shape wedge mixed single way super clutch

The utility model relates to a kind of free wheel device, particularly peach shape, the hybrid mono-directional overrun clutch of fist shape voussoir.

The free wheel device that in all kinds of mechanical transmission such as lathe, automobile, bicycle, packing, printing, food, lifting transportation, petrochemical industry, metallurgy, mine, uses at present, mainly be click formula clutch and roller-type overrunning clutch, these two kinds of clutch usabilities and technology capability are all poor, and power consumption is big, the life-span is short, promotes the use of and is subjected to certain limitation.Ratchet, pawl type free wheel device are when work, owing to have only one or two tooth to bear torque on the ratchet, it is less therefore to bear torque.Simultaneously, can not be in any position all with transmitting torque, and the sound of " clatter clatter " is arranged during " surmounting " transmission, noise is big, uses inconvenience.

Roller-type overrunning clutch, functional reliability is poor, and can not be too many because of the quantity of placing in raceway, thereby bearing capacity is low; Star-wheel processing is difficulty relatively, and calibration is wanted accurately, places the hole depth of spring and wants consistent, and these add and are not easy man-hour to guarantee, thereby manufacturability is poor.More than two kinds of free wheel devicees, though mechanically also using so far many because above-mentioned shortcoming in use is subjected to certain limitation.

On some novel mechanicals, bring into use a kind of fist shape unidirectional wedge-typed overrunning clutch in recent years.The energy force rate roller type of this clutch carrying torque is much bigger, but owing in the inner and outer rings raceway, except that the fist shape voussoir that some is housed, the roller of some also is housed regularly so that play radial support and the effect of adjusting wedge position, but certainly will reduce the quantity of voussoir like this, bearing capacity is affected.In addition, because the inside and outside two work circular arc width dimensions of fist shape voussoir are more or less the same, not easy to identifyly when processing and assembling often get wrong easily, main is to require radial dimension less, under the situation of ring, very difficult during the dress axle in not having.Ring structure in this clutch should not be made and not have.

The purpose of this utility model is to provide a kind of transmitting torque big, installs to be easy to peach shape, the hybrid mono-directional overrun clutch of fist shape voussoir.The utility model is realized by following manner.It is made up of outer shroud (1), peach shape voussoir (2), packing ring (3), spring (4), interior ring (5), fist shape voussoir (6) and circlip (7);

(1) is placed with peach shape voussoir (2) and fist shape voussoir (6) between outer shroud (1) and the interior ring (5);

(2) peach shape voussoir (2) and fist shape voussoir (6) are pressed the regular arrangement of certain orientation between inside and outside circle raceway;

(3) place 2-3 fist shape voussoir (6) every 1-3 peach shape voussoir;

(4) spring (4) is respectively placed at peach shape voussoir (2) and fist shape (6) two ends;

(5) respectively there are a packing ring (3) and circlip (7) in peach shape voussoir (2) and fist shape voussoir (6) two ends.

Regularly arranged between common fist shape wedge block type clutch or common peach form wedge block type clutch inner and outer rings raceway have a plurality of peach shape voussoirs and a fist shape voussoir; The section configuration of two kinds of voussoirs is that straightway and a plurality of circular arc are formed, and the center of inside and outside two work circular arcs is eccentric.

Since voussoir in two raceways relatively inner ring axis shape at a tilt angle, motionless when outer shroud, when sense of rotation of interior hoop was rotated, wedge height was less than the gap between the inner and outer rings, thus in ring can rotate, be in " surmounting " state at this moment.When another sense of rotation of interior hoop is rotated, wedge height greater than the gap between the inner and outer rings by wedging, thereby braking and drive the outer shroud transmitting torque.

Following preference elaborates to the utility model in conjunction with the accompanying drawings, but does not limit the example of model utility.

Fig. 1 is the plan view of the utility model structure;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is a work schematic representation of the present utility model.

Rotation peach shape voussoir (2) and fist shape voussoir (6) between outer shroud (1) and the interior ring (5), two kinds of voussoir section configurations as shown in Figure 3.Outer working surface radius of arc is respectively R _WAnd R _W1, the inner working face circle radius is R _NAnd R _N1, voussoir is regularly arranged by certain direction in two raceways, places 2-3 fist shape voussoir every 1-3 peach shape voussoir simultaneously.A packing ring (3) is equipped with respectively place a spring (4) (or elastic steel traveler) in the groove at voussoir two ends, and the voussoir two ends respectively, elastic washer (7).When ring in the clutch is center when counterclockwise rotating with the O point,, under the frictional force action of the radial pressure of spring (4) and inner race and voussoir, make voussoir center on B point and B respectively because outer shroud (1) maintains static ₁The revolution of some clockwise direction is because the cross-section size H of voussoir (2) ₁, the cross-section size H of voussoir (6) ₁₁All greater than the radial distance of inner and outer rings raceway (because R _W, R _NAnd R _W1, R _N1Off-centre due to), voussoir (2) and voussoir (6) be all by wedging, thus reach self-locking make in ring be braked.When interior ring clockwise rotated, voussoir (2) and voussoir (6) were respectively around B point and B ₁Point is revolution counterclockwise, makes voussoir (2) cross-section size H ₂Position and voussoir (6) cross-section size H ₂₁The position less than its radial clearance, so voussoir (2) and voussoir (6) are motionless by wedging, be in " surmounting " state, interior ring just can freely rotate in a clockwise direction.

The utility model has the advantages that: (1) is compared with existing roller clutch, in the measure-alike situation of profile, can transmit bigger torque (torque be roller 10-14 doubly). (2) compare with the peach-shaped voussoir with single fist shape voussoir, it is maximum to hold voussoir in the inner and outer rings raceway, so carry torque maximum, is 1.2-1.5 times of above-mentioned single wedge clutch. (3) this clutch configuration compactness, make, install be easier to, dependable performance, the life-span is long, usability good.

Claims

1, a kind of peach shape, the hybrid mono-directional overrun clutch of fist shape voussoir, it is made up of outer shroud (1), peach shape voussoir (2), packing ring (3), spring (4), interior ring (5), fist shape voussoir (6) and circlip (7), it is characterized in that:

(3) place 2-3 fist shape voussoir (6) every 1-3 peach shape voussoir;

2, mono-directional overrun clutch according to claim 1 it is characterized in that peach shape voussoir (2) and fist shape voussoir (6) section configuration are that straightway and a plurality of circular arc are formed, and the center of inside and outside two work circular arcs is eccentric.