CN207015538U - Rickshaw laborsaving can trample crank structure - Google Patents

Abstract

A kind of can laborsaving trample crank structure of the utility model on rickshaw, including when compass palte, crank mechanism and transmission mechanism, when compass palte offer guide groove；Crank mechanism includes the first crank, the second crank and the 3rd crank, and the first crank includes axle sleeve and first gear, and axle sleeve wears compass palte when connecing, and the second crank is connected by second gear with the first crank；Transmission mechanism is arranged on the inside of the first crank and including mobile bar and with body, band body is socketed between first gear and second gear, braking parts and embedded division are respectively formed with two ends of mobile bar, braking parts correspond to second gear configuration, and embedded division corresponds to guide groove and is fitted together to.Whereby, labor-saving effect can be reached and allow crank mechanism smoothness and can safely do the inertia circular motion for meeting ergonomics.

Description

Rickshaw laborsaving can trample crank structure

Technical field

The relevant one kind of the utility model tramples crank technology, espespecially a kind of laborsaving to trample crank knot for rickshaw Structure.

Background technology

For modern for the health of body or in order to reduce the discharge capacity of pernicious gas and carbon, big city is kind a part of Time is carried out, such as jog, walking or riding bicycle motion, wherein riding bicycle have short, intermediate range trip due to possessing Swim effect, thus can more allow the body of rider, the heart, spirit obtain it is optimal releive, and bicycle that is a large amount of in each counties and cities and establishing in a wide range Under special lane, riding bicycle obviously turns into one of favorite campaign item of the whole people.

The crank of existing bicycle is the body of rod of a regular length, to connect the mandrel of pedal and bicycle, voluntarily Car is to trample pedal by user in operation, make pedal carried out by pivot of axis using crank length as The circular motion of radius, and drive the drive device such as element such as fluted disc, chain, and then make bicycle advance of bicycle.

Existing apply tramples crank structure in bicycle, can not rotate to when needing at force, stretch in pedal The length of its long crank and then the increase arm of force, therefore more labour-saving effect can not be reached, it is setting with existing telescoping crank Meter can not rule and inertia move in a circle it is laborious and be easily caused user's fatigue tramples crank structure for one.

Utility model content

What the purpose of this utility model was to provide a kind of rickshaw laborsaving can trample crank structure, and it is exerted a force using increase Arm lengths can do rotary oscillation by the second crank to reach labor-saving effect relative to the first crank, so that crank machine Structure smoothness and can safely do the circular motion of rule.

To achieve these goals, what the utility model provided a kind of rickshaw laborsaving can trample crank structure, including one When compass palte, a crank mechanism and a transmission mechanism, this when compass palte offer a guide groove；The crank mechanism include one first crank, Connect one second crank of first crank and be fixed on second crank and one the 3rd crank of arranging alongside one another, this first Crank includes an axle sleeve and is socketed in a first gear of the axle sleeve, and the axle sleeve wears compass palte when connecing this, and second crank passes through one Second gear is connected with first crank；The transmission mechanism is arranged on the inside of first crank, and the transmission mechanism includes one and moved Lever and a band body, the band body are socketed between the first gear and the second gear, formed respectively at two ends of the mobile bar Have a braking parts and an embedded division, the braking parts to should second gear configure, the embedded division to should guide groove be fitted together to；Wherein should In rotary course, the embedded division will be removed and drives the braking parts operably right crank mechanism along the track of the guide groove It should brake or discharge in the second gear, so as to which second crank and the 3rd crank can be stopped relative to first crank Move or do rotary oscillation.

Further, this, which laborsaving can trample crank structure, also includes an elevating mechanism, and the elevating mechanism includes being socketed in this One sleeve of axle sleeve, the sleeve have one to climb portion, are provided with an abutting part in the embedded division side, the abutting part is operatively right Should the portion of climbing push so that the sleeve can move relative to the axle sleeve.

Further, this when compass palte the rickshaw is arranged on by a fixed seat, formed in the periphery of the fixed seat One fixing the tabs being positioned on the rickshaw.

Further, the guide groove is an annular guide channel, including circumferentially formula arrangement one first intermittent zones, a shrinking zone, One second intermittent zones and a stretching area.

Further, two sides of first crank are respectively formed with a head end and an end, the axle sleeve, the first gear and This when compass palte be installed with the head end, the end then for the second crank connect and for the second gear dispose.

Further, the 3rd crank is fixed on the one end of second crank away from first crank.

Further, first crank include an outer arm and to should outer arm engagement an inner arm, in the outer arm to should Head end position is extended with multiple support arms, and the rickshaw has a sprocket wheel, and respectively the support arm is fixed on institute by multiple solid components State sprocket wheel.

Further, the mobile bar is supported between the outer arm and the inner arm by multiple bearing sleeves.

Further, the pitch diameter of the second gear is less than the pitch diameter of the first gear.

Further, the elevating mechanism also includes a compression spring and a clasp, and the clasp snaps onto the sleeve away from this Climb the one end in portion, the compression spring be set in the outer peripheral edge of the axle sleeve and by resilient clamp the clasp and this when compass palte it Between.

Further, the periphery wall of the sleeve is provided with multiple axial grooves, this when compass palte be provided with multiple salient points, each axial groove It is to correspond respectively to the respectively salient point to do embedded combination.

Further, the end face of the sleeve is extended with multiple projections, and the first gear is provided with more towards the end face of the sleeve Individual neck, respectively operatively corresponding respectively neck does embedded positioning to the projection.

Further, second crank and the 3rd crank are formed in one.

Further, one end of second crank forms a ladder block, and distinguishes in the ladder block and second crank Provided with a perforation, the three-throw one end forms a step trough, and is respectively equipped with one in the step trough and the 3rd crank Perforation, the ladder block to should step trough engage, and wear the respectively perforation by multiple binding members to consolidate.

Further, the braking parts are a triangle inserted block.

Further, the embedded division is a latch.

Further, the band body is rule belt for the moment.

Further, the portion of climbing is an inclined-plane.

The utility model also has following effect, in the running can be by first gear and by the setting of elevating mechanism Two gears, which are done, alternately to be rotated, and then ensures the smoothness of operating.By when advise belt connection first gear and second gear, It can ensure that the precision of transmission.The step trough of ladder block and the 3rd crank provided with corresponding ladder block is provided with using in the second crank, Worn by binding member and connect consolidation, so as to effectively prevent the 3rd crank produce because of prolonged running flexural deformation or pull from Etc. bad situation.

Brief description of the drawings

Fig. 1 is that the utility model laborsaving can trample the constitutional diagram that crank structure is applied to bicycle.

Fig. 2 is that the utility model laborsaving can trample the constitutional diagram that crank structure connects sprocket wheel.

Fig. 3 is the exploded view that the utility model laborsaving can trample crank structure.

Fig. 4 is the exploded view of part body of the present utility model.

Compass palte sectional view when Fig. 5 is of the present utility model.

Fig. 6 is the schematic diagram of crank mechanism continuity of the present utility model operation.

Fig. 7 is use state sectional view of the embedded division of the present utility model in the first intermittent zones.

Fig. 8 is another visual angle use state sectional view of the embedded division of the present utility model in the first intermittent zones.

Fig. 9 is use state sectional view of the embedded division of the present utility model in shrinking zone.

Figure 10 is another visual angle use state sectional view of the embedded division of the present utility model in shrinking zone.

Figure 11 is the second crank of the present utility model and another embodiment exploded view of the 3rd crank.

Figure 12 is the second crank of the present utility model and another embodiment assembled sectional view of the 3rd crank.

Wherein, reference：

Compass palte when 10 ...

11 ... discs

12 ... guide grooves

121 ... first intermittent zones

122 ... shrinking zones

123 ... second intermittent zones

124 ... stretching areas

13 ... studs

14 ... salient points

15 ... fixed seats

151 ... tabs

20 ... crank mechanisms

21 ... first cranks

211 ... head ends

212 ... ends

213 ... outer arms

214 ... inner arms

215 ... support arms

216 ... axle sleeves

217 ... first gears

218 ... second gears

219 ... necks

22 ... second cranks

221 ... ladder blocks

222 ... perforation

23 ... the 3rd cranks

231 ... step troughs

232 ... perforation

30 ... transmission mechanisms

31 ... mobile bars

311 ... braking parts

312 ... embedded divisions

313 ... abutting parts

32 ... band bodies

33 ... bearing sleeves

40 ... elevating mechanisms

41 ... sleeves

411 ... climb portion

412 ... axial grooves

413 ... projections

42 ... compression springs

43 ... clasps

θ ... is spaced angle

8 ... bicycles

81 ... vehicle frames

83 ... rotating shafts

84 ... pedals

85 ... sprocket wheels

Embodiment

Embodiment is given below, the utility model is described in detail with reference to accompanying drawing, but not as to this The restriction of utility model.

Refer to shown in Fig. 1 to Fig. 5, a kind of rickshaw of the utility model offer laborsaving can trample crank structure, this reality Applying example is explained with the sprocket wheel side of a bicycle 8, and this bicycle 8 has a vehicle frame 81, and place is worn below the center pillar of vehicle frame 81 Provided with a rotating shaft 83, another bicycle 8 also includes a pair of pedals 84, sprocket wheel 85 and other necessary devices, it is of the present utility model can Laborsaving crank structure of trampling mainly includes a period of time compass palte 10, a crank mechanism 20 and a transmission mechanism 30.

When compass palte 10 by a fixed seat 15 be arranged on aforementioned rotation axis 83 position, fixed seat 15 is a hollow circular ring, The position of its outer peripheral edge forms one folding piece 151, is positioned to fix on aforesaid frame 81；The when compass palte 10 of the present embodiment is One hollow disc body 11, a guide groove 12 is provided with a side surface of disc 11, this guide groove 12 is an annular guide channel, and it is mainly wrapped Circumferentially one first intermittent zones 121 of formula arrangement, a shrinking zone 122, one second intermittent zones 123 and a stretching area 124 is included (such as to scheme Shown in 5)；Separately be extended with multiple studs 13 at the back side of disc 11, for bolting element wear fixed seat 15 and affixed disc 11；Also, the internal face in disc 11 is provided with multiple salient points 14.

Crank mechanism 20 includes one first crank 21, one second crank 22 and one the 3rd crank 23, and the two of the first crank 21 Side is respectively formed with a head end 211 and an end 212, and head end 211 is when being set in foregoing outside compass palte 10；Second crank 22 are connected to the position of end 212 of the first crank 21, and the 3rd crank 23 is fixed on one of the second crank 22 away from the first crank 21 End, and 22 arranging alongside one another of the 3rd crank 23 and the second crank, 23 remote one end fixed with the second crank 22 of the 3rd crank It is to be connected for foregoing pedal 84.

Further, the first crank 21 includes the inner arm 214 that an outer arm 213 and corresponding outer arm 213 engage, in outer arm The 213 corresponding positions of head end 211 are extended with multiple support arms 215, and foregoing chain is fixed on each support arm 215 is worn for bolting element Wheel 85.Separately an axle sleeve 216 is provided with the head end 211 of the first crank 21 and be socketed in a first gear 217 of axle sleeve 216, its Bottom bracket axle 216 wears compass palte 10 when connecing foregoing.Also, being provided with a second gear 218 in the end 212 of the first crank 21, second is bent Handle 22 is to be connected by second gear 218 with the first crank 21, and the pitch diameter of second gear 218 is less than first gear 217 Pitch diameter, and the gear ratio of first gear 217 and second gear 218 is an integer, such as:2:1,3:Isosorbide-5-Nitrae:1 etc..

Transmission mechanism 30 is arranged on the inside of the first crank 21, and transmission mechanism 30 includes a mobile bar 31 and a band body 32, a braking parts 311 and an embedded division 312 are respectively formed with two ends of mobile bar 31, mobile bar 31 passes through multiple bearing sleeves 33 It is supported between the outer arm 213 and inner arm 214 of the first crank 21, and mobile bar 31 can be done linearly back and forth relative to each bearing sleeve 33 Mobile, the braking parts 311 of the present embodiment are a triangle inserted block, but are not limited with such a shape, and it corresponds to foregoing second The side configuration of gear 218, the embedded division 312 of the present embodiment is a latch, but is not limited in the form of such a, and it is corresponded to The guide groove 12 of compass palte 10 does embedded combination when foregoing；Separately an abutting part 313 is provided with the side of embedded division 312.The present embodiment Band body 32 is rule belt, but be not limited in the form of such a for the moment, and it is to be socketed in foregoing first gear 217 and second gear 218 Between.

The crank structure of the present utility model that laborsaving can trample also includes an elevating mechanism 40, and this elevating mechanism 40 includes a set of 41, one compression spring 42 of cylinder and a clasp 43, sleeve 41 are socketed in the outer peripheral edge of axle sleeve 216, have one to climb in the upper end of sleeve 41 Ascending part 411, the portion 411 of climbing of the present embodiment is an inclined-plane, and it corresponds to foregoing abutting part 313 and arranged.Separately in sleeve 41 Periphery wall is provided with multiple axial grooves 412, and each axial groove 412 is that each salient point 14 of compass palte 10 when corresponding respectively to foregoing does embedded knot Close so that sleeve 41 can not produce rotation in the case of relative to when compass palte 10 do lifting moving.Also, in sleeve 41 Upper surface is extended with multiple projections 413, and foregoing first gear 217 is provided with multiple necks 219, each neck towards the end face of sleeve 41 219 be for the insertion positioning of each projection 413, so that first gear 217 does not produce rotation start.Clasp 43 is to snap onto sleeve 41 Away from the one end in portion 411 of climbing, compression spring 42 be set in the outer peripheral edge of axle sleeve 216 and by resilient clamp clasp 43 and when advise Between disk 10, in the case where abutting part 313 does not push to the portion of climbing 411, sleeve 41 and first gear 217 are separated State.

Refer to shown in Fig. 6 to Fig. 8, corresponding respectively to each pedal 84 with sole during use applies active force, in crank Mechanism 20 rotates in a clockwise direction when passing through top dead-centre (12 o'clock position), by the first crank 21 and the second crank 22 connect The force arm being connected into tramples crank structure only by the force arm of single crank more than traditional type, according to principle of moments (M=F × d, F:Active force, d:The arm of force), therefore under torque (Moment) same case, it is of the present utility model laborsaving to trample crank structure The active force applied needed for it is smaller, and then can obtain labour-saving effect.

Hold, the first crank 21 has a top dead-centre, the starting point of the first intermittent zones 121 and the interval angle theta of top dead-centre For 0~10 degree, wherein be preferred with 5 degree, when embedded division 312 enters in the first intermittent zones 121 along guide groove 12, transmission mechanism 30 mobile bar 31 will do linear movement towards outside, and insert second gear 218 with braking parts 311, and then make second gear 218 produce it is static, now using under each projection 413 of sleeve 41 and the 219 separated state of each neck of first gear 217 (i.e. First gear 217 is freely rotatable), when continuing to do clockwise rotation with the first crank 21, first gear 217 will nibble Crossed belt body 32 does clockwise rotation, follows the first crank 21 to be synchronized with the movement simultaneously in first gear 217, the second crank 22 It is in detent relation with the 3rd crank 23 and the first crank 21.

Refer to shown in Fig. 6, Fig. 9 and Figure 10, followed by, when embedded division 312 enters in shrinking zone 122 along guide groove 12, The mobile bar 31 of transmission mechanism 30 will do linear movement towards inner side, and the portion 411 of climbing of sleeve 41 is pushed against with abutting part 313, Now each salient point 14 is cooperated with axial groove 412, and sleeve 41 will be made not produce rotation but upward line is made along axle sleeve 216 Property movement, in the case where each projection 413 of sleeve 41 and each neck 219 of first gear 217 are mutually twisted, first gear 217 be in One inactive state is (i.e.:Link just as with vehicle frame), now as the first crank 21 continues to do clockwise rotation, military order Two gears 218 will drive second with doing anticlockwise rotation with the mutually traction of body 32 while second gear 218 rotates The crank 23 of crank 22 and the 3rd does upward rotary oscillation relative to the first crank 21, is rotated by the first crank 21 to under When dead point (6 o'clock position) is at a distance of an appropriate position, using the upward swing of the second crank 22, can effectively it prevent because applying The problem of length of the arm of force is increased in caused safety in utilization, and allow crank mechanism 20 can do circumference to smoothness Motion.

Further, embedded division 312 along guide groove 12 enter the second intermittent zones 123 in when, each element it is mutual Relation and start relation are identical into the first intermittent zones 121 with foregoing embedded division 312；Similarly, in embedded division 312 along guide groove When in 12 entrance stretching areas 124, correlation and start relation and the foregoing embedded division 312 of each element enter shrinking zone 122 is identical.

Refer to shown in Figure 11 and Figure 12, the second crank 22 and the 3rd crank 23 also may be used in addition to it can be to be integrally formed As the present embodiment forms a ladder block 221 in one end of the second crank 22, and set respectively in the crank 22 of ladder block 221 and second There is a perforation 222, one end of the 3rd crank 23 forms a step trough 231, and is set respectively in the crank 23 of step trough 231 and the 3rd There is a perforation 232, engaged with the corresponding step trough 231 of ladder block 221, each perforation 222,232 is being worn with binding members such as rivets And consolidate.

In summary, rickshaw of the present utility model laborsaving can trample crank structure, really can reach and expected use mesh , by the setting of elevating mechanism, it can be done by first gear and second gear alternately rotate in the running, and then ensure to transport The smoothness turned.By when advise belt connection first gear and second gear, it can be ensured that the precision of transmission.Using in the second song Handle is provided with ladder block and the 3rd crank is provided with the step trough of corresponding ladder block, is worn by binding member and connects consolidation, so as to effectively Prevent the 3rd crank produced because of prolonged running flexural deformation or pull from etc. bad situation.

Certainly, the utility model can also have other various embodiments, without departing substantially from the utility model spirit and its essence In the case of, those skilled in the art can make various corresponding changes and deformation, but these phases according to the utility model The change and deformation answered should all belong to the protection domain of the utility model claims.

Claims (18)

1. a kind of rickshaw laborsaving can trample crank structure, it is characterised in that the structure includes:

A period of time compass palte, this when compass palte offer a guide groove；

One crank mechanism, the crank mechanism include one first crank, connect one second crank of first crank and be fixed on this Second crank and one the 3rd crank of arranging alongside one another, first crank include an axle sleeve and are socketed in the one first of the axle sleeve Gear, the axle sleeve wear compass palte when connecing this, and second crank is connected by a second gear with first crank；And

One transmission mechanism, the transmission mechanism are arranged on the inside of first crank, and the transmission mechanism includes a mobile bar and a band Body, the band body are socketed between the first gear and the second gear, and a braking parts are respectively formed with two ends of the mobile bar And an embedded division, the braking parts to should second gear configure, the embedded division to should guide groove be fitted together to；

In rotary course, the embedded division will be removed and drives the braking parts to grasp the wherein crank mechanism along the track of the guide groove Operatively brake or discharge corresponding to the second gear, so as to allow second crank and the 3rd crank can relative to this Rotary oscillation is done in one crank stop.

2. rickshaw according to claim 1 laborsaving can trample crank structure, it is characterised in that also including a lift Structure, the elevating mechanism include being socketed in a sleeve of the axle sleeve, and the sleeve has one to climb portion, and one is provided with the embedded division side Abutting part, the abutting part operatively to should the portion of climbing push so that the sleeve can move relative to the axle sleeve.

3. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that this when compass palte pass through one Fixed seat is arranged on the rickshaw, forms one in the periphery of the fixed seat to fix the folding being positioned on the rickshaw Piece.

4. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the guide groove is an annular Guide groove, including circumferentially one first intermittent zones, a shrinking zone, one second intermittent zones and a stretching area for formula arrangement.

5. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the two of first crank Side is respectively formed with a head end and an end, the axle sleeve, the first gear and this when compass palte be installed with the head end, the end is then Connect for the second crank and disposed for the second gear.

6. rickshaw according to claim 5 laborsaving can trample crank structure, it is characterised in that the 3rd crank is fixed In the one end of second crank away from first crank.

7. rickshaw according to claim 5 laborsaving can trample crank structure, it is characterised in that first crank includes One outer arm and to should outer arm engagement an inner arm, the outer arm to should head end position be extended with multiple support arms, the manpower Car has a sprocket wheel, and respectively the support arm is fixed on the sprocket wheel by multiple solid components.

8. rickshaw according to claim 7 laborsaving can trample crank structure, it is characterised in that the mobile bar passes through more Individual bearing sleeve is supported between the outer arm and the inner arm.

9. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the section of the second gear Circular diameter is less than the pitch diameter of the first gear.

10. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the elevating mechanism is also Including a compression spring and a clasp, the clasp snaps onto the one end of the sleeve away from the portion of climbing, and the compression spring is set in The outer peripheral edge of the axle sleeve and by resilient clamp the clasp and this when compass palte between.

11. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the periphery of the sleeve Wall is provided with multiple axial grooves, this when compass palte be provided with multiple salient points, respectively the axial groove is to correspond respectively to the respectively salient point to do embedded knot Close.

12. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the end face of the sleeve Multiple projections are extended with, the first gear is provided with multiple necks towards the end face of the sleeve, and respectively the projection operatively corresponds to each The neck does embedded positioning.

13. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that second crank and 3rd crank is formed in one.

14. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that second crank One end forms a ladder block, and is respectively equipped with a perforation in the ladder block and second crank, the three-throw one end into Type has a step trough, and is respectively equipped with a perforation in the step trough and the 3rd crank, the ladder block to should step trough engage, And the respectively perforation is worn by multiple binding members to consolidate.

15. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the braking parts are one Triangle inserted block.

16. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the embedded division is one Latch.

17. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the band body is for the moment Advise belt.

18. rickshaw according to claim 2 laborsaving can trample crank structure, it is characterised in that the portion of climbing is one Inclined-plane.