CN2158841Y - Four-stage semi-automatic speed-changing device for manual cycle - Google Patents

Abstract

The utility model relates to a four-stage semi-automatic speed-changing device for manual cycles, which comprises a middle shaft, a shaft bearing, chain wheels and a shell, and a gear set whose middle gears are engaged with a plurality of pinion gears that are engaged with bull gears, a gear shifter that is composed of shifting fork pins arranged on the bull gears and combiners for engaging the bull gears and middle gears, a spline ring actuator that is composed of power plates tightly fixed by a pinion shaft and is tightly fixed with chain wheels, and an automatic safety gear shifter that is composed of a shaft headgear (7) arranged on the middle shaft (24), fasteners (5) arranged at the periphery of the bull gears (4), and automatic pins arranged between the shaft headgear (7) and the fasteners (5). The speed changing device has four speed ratios each of which can accelerate by 1.3 times, has the function of fast shift for loading capacity so as to deal with various emergent conditions, and has the functions of easily climbing grades and preventing cycles from sliding, suitable for rural roads especially roads on hills and mountains.

Description

Four-stage semi-automatic speed-changing device for manual cycle

The utility model relates to a kind of transmission system, particularly about the gear transmission of rickshaw.

Existing rickshaw, particularly manual tricycle generally use in China town and country, because its speed can't regulate, thereby are difficult to transport as shipping parcels in the mountain area, hills.Even at level land road running, it is overweight to meet the loading of climbing manual tricycle by chance, and can not have a rest a little in climbing midway and breathe in the slope of must ascending without letup, return otherwise three-wheel vehicle can lean on gravity to glide, and traffic accident just takes place slightly because of carelessness.This kind situation for a change, people develop multiple speed changer for man-power drawn vehicle, CN2062709U and CN2092481U propose two kinds change-speed box, cyclo for no change-speed box is a progress, but the former has only second gear, and actual the use can not brought into play speed changing effect, and the latter is a multi-speed exchanged, but complex structure significantly increases the car body deadweight, is difficult to be adopted by actual demand person.

The purpose of this utility model is a kind of speed changer for man-power drawn vehicle of design, and governing speed reached the effect of laborsaving safe operation when this kind change-speed box can travel climbing in the mountain area, hills.

The technical solution adopted in the utility model is, rickshaw level Four semiautomatic gearbox, it comprises axis, bearing, sprocket wheel and shell, its feature also comprises by a middle gear and some pinion and a miniature gears and a big gear wheel gears in mesh group, by place on the described big gear wheel shifting fork pin and with described big gear wheel and the chimeric molecular gearshift device of combination of middle gear, by constituting driver, by placing the spindle nose cover on the axis and placing the son of stinging of big gear wheel periphery to form the automatic safe selector from untie-sell among the son with being located at the spindle nose cover and stinging with the fastening power plate of pinion shaft with spline circle that chain wheel tightens up.

The advantage of this change-speed box is that speed level is many, differential is big, every grade all with 1.3 more speedup shelves, and every grade of differential is arranged balanced and reasonable, no matter be that heavy duty is travelled or climbed and goes up the mountain ridge and can both make the people laborsaving light.This device has two kinds of automatic functions, the first 3 and 4 grades of energy autoshifts, and 3,4 grades belong to the load-carrying shelves, need be quick, easy to deal with the various emergency state, without manual manipulation, and oppositely pedal to changing 3 to 4 grades with foot-driven lever.It two is the devices that are provided with automatic anti-slip back car, thereby safe and reliable when load-carrying is climbed, needn't worry to slip car, and situation about having an accident.This speed changer structure compactness is fit to advantages such as manual tricycle assembling use in addition.

Below accompanying drawing is done the drawing explanation.

Fig. 1 is integrally-built 1/2nd section-drawings of the utility model.

Fig. 2 is the positive whole section-drawing of the utility model.

Each component locations graph of a relation when Fig. 3 is one grade.

Each component locations graph of a relation when Fig. 4 is second gear.

Fig. 5 is three each component locations graph of a relation during to fourth gear.

Fig. 6 is miniature gears, combination, fork shift pin and key wheels cross motion direction scheme drawing.

Fig. 7 is big gear wheel, miniature gears, combination and middle gear syntagmatic figure.

Fig. 8 is the housing parts scheme drawing.

Among the above-mentioned figure, 1 is middle gear ring, and 2 is 104 bearing external tooth shells, 3 be 103 bearing external tooths also, 4 is the big gear wheel internally toothed annulus, and 5 for stinging son, and 6 is from untie-sell, and 7 is the spindle nose cover, 8 is the spline circle, and 9 is miniature gears, and 10 is little spindle nose, and 11 is power plate, 12 is seal ring, and 13 is lining, and 14 is the shift fork pin, and 15 is the shift fork circle, 16 is dividing plate, and 17 for closing a spring, and 18 is chain wheel, 19 is pieces of center of circle, and 20 is shell, and 21 is tubular axis, 22 is fulcrum and cap, and 23 is bearing case, and 24 is axis, 25 is pedal stroke, and 26 are combination, and 27 is safety pin, 28 is from the untie-sell spring, and 29 is middle pivot pin, and 30 is the housing chute, 31 is housing, and 32 is from untie-sell breach, 103,104,105 is standard rolling bearing.

The 26S Proteasome Structure and Function of embodiment is now described in conjunction with the accompanying drawings.

This change-speed box is made up of tubular axis parts, power plate combination, gear cluster, chain wheel set and control fork device five parts, and the each several part 26S Proteasome Structure and Function is described below:

Tubular axis parts (Fig. 1,3) are by middle pivot pin (29), 104,105 bearings, and 104 tooth shells (2), 105 shells also (3) and spindle nose cover (7) are formed.104 tooth shells are middle gear ring (2), and it is the basis of gear cluster, and it and spindle nose cover (7) match and play a crucial role in gear shift.

Power plate combination (Fig. 2) is made up of power plate (11), 6 little spindle noses (10), 3 miniature gearss (9), tighten at power plate (11) respectively by 6 little spindle noses (10), go up at 3 pinion shafts (10) again and adorn little tooth bearing on the dress pinion shafts (10) and miniature gears (9) forms.

Gear combination (Fig. 2,7) is combined by bull gear (4), middle gear ring (2), 3 combination (26), 3 miniature gearss (9), wherein 3 combination (26) are spaced apart with 3 miniature gearss (9), gear combination is the basis of this speed changer, exports different rotating speeds and gives chain wheel (18).

Chain wheel set (Fig. 1) by chain wheel (18), spline circle (8), close a spring (17) and 105 bearing cases are formed.The key wheels are the transmission devices that drive chain.

Selector (Fig. 2,6) is made up of shift fork pin (14), shift fork circle (15), fork shift bar and connecting rod, the shift fork pin (14) that 3 mutual spacing 60 degree are arranged on the shift fork circle (15), pin the inside control bull gear, one of them pin lengthening provide fork shift bar and connecting rod do control gear shift on the vehicle frame.Have housing chute (30) on the housing (31), the fork shift bar is moved forward and backward promote the gear tissue and shift one's position and carry out gear shift through chute.Gear cluster rotates by required speed ratio when making gear shift, has 3 of mutual 120 degree to sting son (5) in big gear wheel (9) outer ring, the action of stinging son (5) and spindle nose cover (7) of being fixed in shell controlling from untie-sell (6) during by gear shift.

Gear shift is to be embedded in respectively between big gear wheel internally toothed annulus (4) and the middle gear external toothing (1) by shifting fork pin (14) and 3 combination (26), as shown in Figure 6, combination (26) is the center with miniature gears (9) with axis (24) shown in Fig. 6, evenly arrange with space 60 degree, therefore miniature gears (9) can be under power drives between big gear wheel (4) and middle gear (1) engagement rolling, can under promoting, shift fork pin (14) move axially again along axis (24), shown in arrow among Fig. 6, gear ring (1) moves to A respectively in shown in Fig. 6, B, during the C position, gear cluster in this change-speed box is fast synthetic, at a slow speed, the different speed ratios of quick slightly and former speed.

The gear tissue of this change-speed box is made up of bull gear (4), middle gear ring (1) and 3 miniature gearss (9), their tooth mould is 1.75 moulds, bull gear (4) is 80 teeth, middle gear ring (1) is 48 teeth, miniature gears (9) is 16 teeth, the velocity ratio of their each grades is to rotate a week with pedal stroke (25), and the revolution of drive sprocket calculates.

1 grade of high speed, shift fork position A, as shown in Figure 3, pedal stroke (25) is clockwise, masterpiece is used for spindle nose cover (7), spindle nose cover (7) is through driving whole power plate (11) motion from untie-sell (6), little spindle nose (10) is last propulsion source, under little spindle nose (10) promotes, by gear ring (1) in miniature gears (9) drive, bite motionlessly because of bull gear (4) is snapped son (5), power just can only be passed to middle gear ring (1), drives chain wheel (18) by middle gear ring (1) through spline circle (8) again and rotates, chain wheel (18) drives trailing wheel through chain and rotates, and the rotation that foot-driven lever this moment (25) turns around is than being 1:2.667.

2 grades are quick slightly, shift fork position C, as shown in Figure 4, bull gear this moment (4) breaks away from stings son (5), enter spline circle (8), middle gear ring (1) breaks away from spline circle (8) and also (3) engagement of tooth, when step is clockwise, promote miniature gears (9) by little spindle nose (10), because of in tooth (1) by tooth also (3) nibble motionlessly admittedly, miniature gears (9) have to promote bull gear (4), drives spline circle (8) by bull gear again and rotates, thereby chain wheel (18) is rotated, rotate this moment than being 1:1.6.

3 grades of former speed, shift fork position B, as shown in Figure 5, bull gear this moment (4) still breaks away to be stung son (5) and enters spline (8), in gear ring (1) leave tooth also (3) and tooth shell (2) join, when tread plate is clockwise, still driving miniature gears (9) by little spindle nose (10) rotates, because of middle gear (1) can not moved by the control of spindle nose cover (7) and 104 tooth shells (2) is fixing, miniature gears (9) is also motionless, can only and then rotate synchronously with spindle nose cover (7) and go to drive bull gear (4) rotation, and then drive chain wheel (18), be 1:1 than speed this moment.

4 grades of low speed, shift fork position B, as Fig. 2, shown in 5, each position of gear cluster is with 3 grades, gear shift only needs just can make 3 grades to become 4 grades the stretcher backward rotation, or clockwisely gain 3 grades with 4 grades, when oppositely stepping, spindle nose cover (7) just can be pushed open from untie-sell (6) and sting son (5) and join, make power plate (11), little spindle nose (10) all is fixed, and spindle nose cover (7) reverse power can only pass to 104 tooth shells (2), by tooth shell (2) driven gear group, middle gear ring (1) is under the drive of tooth shell (2), be transmitted in miniature gears (9), and miniature gears (9) drives bull gear (4) in clockwise mode under the motionless situation of little spindle nose (10), drive spline circle (8) again and pass to chain wheel (18), this moment, transmitting ratio was 1:0.6.

The automatic safe shelves, it just produces after 4 grades of runnings, from untie-sell (6) the inside individual breach (32) is arranged, when 4 grades of operations stop, drawn in 1/2 from untie-sell (6) by spring (28), make fork shift pin (6) two leave 1/2 length, the automatic safe shelves are to be in 3 P PARK Position Ps at gear cluster, and when entering 4 grades of counter stepping on, from untie-sell (6) under the promotion of spindle nose cover (7), always with sting son (5) and contact, also can decompression power during parking from untie-sell (6), drawn in by spring pin (28), but caught by power plate (11) lining, can only be drawn in 1/2 position from the breach (32) of untie-sell (6) the inside.The effect that produces anti-slip back car is after three-wheel vehicle runs out of steam, because of stretching out 1/2 from untie-sell (6), power plate (11) and little spindle nose (10) break away from yet fully to be stung son (5) and is stationary state, so gear ring (1) was clockwise during miniature gears (9) have to go to promote, and it is clockwise to drive spindle nose cover (7), spindle nose cover (7) and drawing in joining and inactive of half from untie-sell (6), like this thus whole gear cluster be in all not can anti-operative condition, this when three-wheel vehicle is climbed, produce a kind of can only before so that the function that can not step back, reach the purpose of automatic safe, when three-wheel vehicle advances at the safety shelves, oppositely step if get 4 grades, spindle nose cover (7) still can be pushed open from untie-sell (6), gets 3 grades when forward stepping, be a little energetically, make to leave and sting son (5) running from untie-sell (6), when stinging son (5) when colliding from untie-sell (6) and the next one, can avoid power plate (11) automatically from untie-sell (6) breach, reinforcing is forward changeed and is 3 grades again.

This change-speed box profile as shown in Figure 8, the about 7cm of oblate type thickness just in time is installed on the axis (29), between two foot-driven levers (25).

Claims (6)

1, rickshaw level Four semiautomatic gearbox, it comprises axis, bearing, sprocket wheel and shell, its feature also comprises:

A. by a middle gear (1) and some miniature gearss (9) engagement and miniature gears (9) and a big gear wheel (4) gears in mesh group;

B. by the gearshift device of forming from untie-sell (6) and combination (26) that big gear wheel (4) and middle gear (1) is chimeric that places on the big gear wheel (4);

C. by constituting driver with the fastening power plate (11) of pinion shaft (10) with spline circle (8) that chain wheel (18) tightens up.

D. by place axis (24) go up spindle nose cover (7) and place big gear wheel (4) peripheral sting son and be located at spindle nose cover (7) and sting between the son (5) from untie-sell (6) formation automatic safe selector.

2, rickshaw level Four semiautomatic gearbox as claimed in claim 1 is characterized in that the internally toothed annulus (4) of gear cluster by a big gear wheel, a middle gear external toothing (2) and 3 miniature gears external toothings (9) engagement, and chimeric with 3 combination (26).

3, rickshaw level Four semiautomatic gearbox as claimed in claim 1 is characterized in that: gearshift device is made up of shift fork pin (14) shift fork circle (15) and the fork shift bar that is loaded on the vehicle frame.

4, rickshaw level Four semiautomatic gearbox as claimed in claim 1 or 2 is characterized in that miniature gears (9) and combination (26) are the center with axis (29), and space 60 degree are evenly arranged.

5,, it is characterized in that having on the fork shift circle (15) 3 shift fork pins (14) apart from one another by 60 degree as claim 1 or 3 described rickshaw level Four semiautomatic gearboxs.

6, rickshaw level Four semiautomatic gearbox as claimed in claim 1 is characterized in that big gear wheel (9) outer ring has 3 of the space be fixed on the shell 120 degree to sting son (5).

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