CN2603874Y

CN2603874Y - Positive and reverse rotation transmission overriding clutch

Info

Publication number: CN2603874Y
Application number: CN 03212180
Authority: CN
Inventors: 董建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-26
Filing date: 2003-03-26
Publication date: 2004-02-18
Anticipated expiration: 2013-03-26

Abstract

A positive and negative rotary overrunning clutch relates to overrunning clutch in mechanical driving devices in particular to positive and negative rotary overrunning clutch. The utility model can solve the technical problems such as unnecessary wear, short life, poor machining technology and adaptability, restricted application of the prior positive and negative rotary overrunning clutch. The present utility of positive and negative rotary overrunning clutch comprises an active part, a moving part, a driven part, the active part consists of a star type hollow shaft, a wedge block, a wedge linking board, a circle spring and a pin, the moving part consists of a roller and a roller support, and the driven part consists of an out ring, a support cover plate and a bearing. The utility model has advantages of fewer wear, long service life, ease in processing and assembling and high adaptability due to simple structural shape of the components used in the utility model, so as to be applied in mechanical drives.

Description

Clockwise and anticlockwise transmission free wheel device

Technical field: the invention relates to the free wheel device in the mechanical transmission, especially the improvement of clockwise and anticlockwise transmission free wheel device structure.

Background technique: the existing free wheel device that can realize the clockwise and anticlockwise transmission, having with the ratchet mechanism is that the clockwise and anticlockwise transmission is realized on the basis; Have by the arc wedge on the both direction and the friction realization clockwise and anticlockwise transmission of follower outer ring; More than two kinds of free wheel devicees, all have unnecessary friction, the rotation that makes driven member surmount driving part is affected, and because of wearing and tearing, reduces its working life, adaptivity is relatively poor, anufacturability is poor, is mainly used in the driving of rickshaw of low speed.

Summary of the invention: the purpose of the invention provides a kind of reducing wear, improve free wheel device working life, technology for processing and assembling is simple, the clockwise and anticlockwise transmission free wheel device that adaptivity is high: the purpose of the invention is achieved through the following technical solutions: clockwise and anticlockwise transmission free wheel device: by driving part, parts move about, driven member constitutes, it is characterized in that driving part is by star-like hollow shaft, voussoir, the voussoir connecting plate, the circle leaf spring, bearing pin constitutes, the voussoir connecting plate flexibly connects by bearing pin and star-like hollow shaft, per two voussoirs are fixedly connected into one group by bearing pin, each voussoir connecting plate flexibly connects with the two adjacent groups voussoir respectively by bearing pin, voussoir and star-like hollow shaft have structure interval, and the circle leaf spring is installed respectively between the voussoir connecting plate; The parts that move about are made of roller, roller support, and roller evenly is placed in every group of voussoir outer rim place, fix with two roller supports; Driven member by the outer ring, support cover plate, bearing constitutes, and the outer ring is sleeved on the outside of the parts that move about, both sides are installed and are supported cover plate, support cover plate and fix by bearing and star-like hollow shaft, the support cover plate is fixedlyed connected with the outer ring

The clockwise and anticlockwise transmission surmounts action specification: one group of voussoir is connected with two adjacent voussoir connecting plates, and voussoir connecting plate and star-like hollow shaft connect and compose parallel four-bar linkage, every group of limit that voussoir is corresponding with star-like hollow shaft; Design leaves the gap, when static state or driving part do not play gearing as shown in Figure 5, when star-like hollow shaft starts under state of rest, star-like hollow shaft begins to rotate, its rotating speed w1 is greater than zero, the startup that voussoir moves lags behind the startup of star-like hollow shaft, under the effect of parallel four-bar linkage, whole voussoir integral body is offset to a direction, near the outer ring, the cambered surface of voussoir and the inner cylindrical surface of outer ring form the cambered surface angle, compress the circle leaf spring simultaneously, the gap that voussoir and star-like hollow shaft leave is also dwindling, when contacting, the cambered surface of outer ring and voussoir contacts with the roller face, this moment, driving part drove the driven member rotation by the parts that move about, as shown in Figure 6, driven member rotating speed W2 equates with driving part rotating speed W1, when star-like hollow shaft rotating speed W1 reduces, driven member rotating speed W2 keeps former rotating speed, this moment, W2 was greater than W1, voussoir, the cambered surface of outer ring and roller cylinder break away from, and driven member surmounts driving part, the parts that move about are in free rolling condition, this moment as shown in Figure 7, under the effect of circle leaf spring, the state when parallel four-bar linkage returning to gradually is static; When star-like hollow shaft reverses, parallel four-bar linkage moves toward opposite direction, driving voussoir moves in the opposite direction, dwindle with outer ring gap, voussoir contacts with the roller cylinder with the cambered surface of outer ring, and driving part drives driven member and rotates, when driving part rotating speed W1 reduces, driven member rotating speed W2 is greater than W1, and driven member surmounts driving part.

The advantage of the invention: driving part drives driven member and rotates, be by the voussoir cambered surface, the outer ring intrados contacts with the roller cylinder and reaches, when the driving part rotating speed reduces, roller and voussoir and outer ring disengage, and roller is in free rolling condition, do not produce wearing and tearing, member is not fragile, has prolonged free wheel device working life; The element structure simple shape of forming clockwise and anticlockwise transmission free wheel device, easily processing assembling; Because driving part constitutes parallel four-bar linkage and the parts that can free rolling move about, adaptivity when having improved driven member and surmounting the forward or reverse of driving part.

Description of drawings:

Fig. 1 is a clockwise and anticlockwise transmission free wheel device structural representation.

Fig. 2 is that Figure 1A is to view (removing the view after supporting cover plate and bearing).

Fig. 3 is that Figure 1A is to view (remove support cover plate, bearing, roll the view after annotating support).

Fig. 4 is Figure 1B-B sectional drawing.

Schematic representation when Fig. 5 is the static state of clockwise and anticlockwise transmission free wheel device or not gearing of driving part.

Fig. 6 is the schematic representation under the clockwise and anticlockwise transmission free wheel device gearing state.

Fig. 7 is that clockwise and anticlockwise transmission free wheel device driven member surmounts the schematic representation under the driving part rotary state.

W1 among Fig. 5, Fig. 6, Fig. 7 is the driving part rotating speed, and W2 is the driven member rotating speed.

Embodiment: clockwise and anticlockwise transmission free wheel device, by driving part, parts move about, driven member constitutes, driving part is by voussoir 5, voussoir connecting plate 6, circle leaf spring 9, star-like hollow shaft 7 and bearing pin 4 constitute, star-like hollow shaft 7 is made the member of polygon celestial body and hollow shaft combination, present embodiment is that star-like hollow shaft 7 is made five limit star polyhedrons, an annular groove is made in star polyhedron center, five limits at star-like hollow shaft 7, voussoir connecting plate 6 is contained in the annular groove of star-like hollow shaft 7, flexibly connect with bearing pin 4 and star-like hollow shaft 7, per two voussoirs, 5 usefulness bearing pins 4 are fixedly connected into one group, every group of voussoir 5 flexibly connects by bearing pin 4 with adjacent voussoir connecting plate 6 respectively, voussoir 5 after the connection stays structure interval 13 with the corresponding plane of star-like hollow shaft, structure interval 13 guarantees the space that voussoir 5 moves, circle leaf spring 9 is installed between adjacent voussoir connecting plate 6, move about parts by roller 11, roller support 3 constitutes, roller 11 is placed in corresponding voussoir 5 cambered surface places uniformly, fixing with roller support 3, roller 11 does not contact with the cambered surface of voussoir 5, guarantee freely to roll, driven member is by outer ring 12, support cover plate 10, bearing 8 constitutes, outer ring 12 is installed in the parts outside of moving about, 12 both sides, outer ring are installed and are supported cover plate 10, supporting cover plate 10 is fixed on the star-like hollow shaft 7 of driving part by bearing 8, support cover plate 10 and outer ring 12 fixed installations, present embodiment bolt 1, nut 2 is with outer ring 12, supporting cover plate 10 is fixedly installed togather, the limit number of the polygon celestial body of star-like hollow shaft 7 and voussoir 5, the quantity of roller 11 is corresponding, the limit numeral system that is the polygon celestial body of star-like hollow shaft 7 becomes five limits, and the quantity of voussoir 5 and roller 11 is corresponding also to be five.

Claims

1, clockwise and anticlockwise transmission free wheel device: constitute by driving part, the parts that move about, driven member, it is characterized in that driving part is made of star-like hollow shaft, voussoir, voussoir connecting plate, circle leaf spring, bearing pin, the voussoir connecting plate flexibly connects by bearing pin and star-like hollow shaft, per two voussoirs are fixedly connected into one group by bearing pin, each voussoir connecting plate flexibly connects with the two adjacent groups voussoir respectively by bearing pin, voussoir and star-like hollow shaft have structure interval, and the circle leaf spring is installed respectively between the voussoir connecting plate; The parts that move about are made of roller, roller support, and roller evenly is placed in every group of voussoir outer rim place, fix with two roller supports; Driven member by the outer ring, support cover plate, bearing constitutes, and the outer ring is sleeved on the outside of the parts that move about, both sides are installed and are supported cover plate, support cover plate and fix by bearing and star-like hollow shaft, the support cover plate is fixedlyed connected with the outer ring.