CN208530788U - A kind of bicycle use mechanical booster component assembly - Google Patents

Abstract

A kind of bicycle use mechanical booster component assembly, chain drum and right crank are separately mounted on axis；Two rivet clasp points of first lever through its two weight arm are fixed on chain drum, second lever identical as the first lever shape, center symmetric setting connects firmly through other two rivet clasp point and third lever and to form two or three lever assemblies, pivot is fixed on the arm of force of the semicircular arc of second lever, through its mesoporous movable set on the axle sleeve of chain drum, third lever weight arm is actively sleeved on the arm of force of the first lever semicircular arc third lever through hole thereon；It is fixed on right crank to be sleeved on the pivot of the second lever to power piece through sets of holes thereon.This assembly structure is simpler, smaller to the change of existing bicycle, is based on multiple groups lever drive, has the characteristics that ride laborsaving.

Description

A kind of bicycle use mechanical booster component assembly

Technical field

The utility model relates to bicycle assembly parts, specifically total based on lever principle labour-saving chain drum crank of riding At.

Background technique

In existing bicycle, chain wheel (i.e. chain drum) is the part that bicycle middle shaft is connected with crank.By scrunching, step tread plate Crank, and then the rotation with movable chain wheel are driven, eventually by chain drum and flywheel, rear wheel is driven, power is provided, complete voluntarily The entire transmission chain of vehicle.And what is generally used is all that right crank and chain drum (i.e. chain wheel) are integral component.The machinery of bicycle Power is to go driving bicycle operating in conjunction with chain drum with pedal chain bar (i.e. crank).Since bicycle only uses single group lever to increase Power, thus its reinforcement it is very limited there is a problem of riding it is laborious.

Utility model content

The utility model aim is to provide one kind and rides labour-saving bicycle use mechanical booster component assembly, it is intended to be based on thick stick Rod principle achievees the effect that incrementally reinforcement by multiple groups lever.

Purpose of the utility model is realized as follows: a kind of bicycle use mechanical booster component assembly, including, axis, Chain drum and right crank, the chain drum and right crank are mounted on axis through key respectively；There is the axis for axis installation at chain disk center Set；

Second lever is made of the arm of force of semicircular arc and two weighing arms, there is a pivot on the arm of force；Third lever On rivet clasp point five and rivet clasp point six respectively on the second lever rivet clasp point three and rivet clasp point four riveting and formed two or three levers Component, third, the 4th lever through the mesoporous movable set on the 4th lever on the axle sleeve of chain drum, rivet clasp point three and rivet clasp point four Line pass through the central point of chain drum, the distance of three central point of rivet clasp point is greater than the distance that rivet clasp point four arrives the central point, the Pivot on two levers to the central point line perpendicular to or be approximately perpendicular to the line of rivet clasp point three, four, and the second lever On pivot to the central point distance be greater than rivet clasp point three arrive central point distance；The shape of first lever and the second lever Shape is identical；First lever is fixed on chain drum and in a center of symmetry with the second lever-shaped through rivet clasp point one and rivet clasp point two, and A pin is fixed on the arm of force of the semicircular arc of one lever；Above-mentioned two or three lever assembly passes through on third lever weight arm Hole movable set is on the pin of the first lever；One is fixedly connected on the nearly middle shaft end of right crank to power piece, to power piece through thereon Sets of holes are sleeved on the pivot of the second lever.

On second lever line of rivet clasp point three and rivet clasp point four perpendicular to or be approximately perpendicular to the second lever The string of semi arch where the arm of force.

The distance of rivet clasp point three to chain drum central point is the distance that rivet clasp point four arrives chain drum central point on second lever 2 times.

The line of pivot center point passes through chain drum central point on pin central point and the second lever on first lever, should Line perpendicular to or be approximately perpendicular to line on the second lever between rivet clasp point three and rivet clasp point four.

Compared with prior art, the utility model has the characteristics that and advantage:

1. structure is simpler, existing bicycle is changed little, it is only necessary to split existing integrated right crank and chain drum For two independent parts, another mating lever transmission mechanism.

2. it is more labor-saving to ride.Based on three levers of lever principle production, the first lever connects firmly with chain drum, the second lever and Third lever connects firmly into three or four lever assemblies, and when riding, the power on foot pedal reaches left and right crank, giving on right crank Power is transferred to the semicircle arm of force of the second lever in three or four lever assemblies by power piece, fulcrum (i.e. third lever on axis At mesoporous), then chain drum rotation is driven through the first lever and chain drum component, due to the transmitting of the power of multi-grade lever, final defeated Power out increases many.Such as: the transmission relationship of each group lever " power " on chain drum: setting cyclist is (unstable to five kilograms of " power " Determine power) it steps on pedal, it is sent to after pedal chain bar (170 millimeters long) for the first time reinforcement and removes the three or four lever of connection to power piece Second lever in component (235 millimeters long) arm of force one end, it is lever augmented twice after conjunction " power " reach on its weight arm (long 60 milli Rice), first lever that presses first (235 millimeters long) arm of force one end, the total of reinforcement reaches the first lever weight arm one with joint efforts three times End is gone to agitate chain case of bicycle, and bicycle setting in motion gets up.

Lever weight arm one and two is set, the consume of lever " fulcrum power " can be saved in this way, weight arm one and two bypasses Axle center is connect with chain drum to be utilized to the maximum of lever force.

Detailed description of the invention

Fig. 1 is the perspective view of chain drum.

Fig. 2 is the main view after chain drum and the assembly of the first, second lever (axis should be in the axle sleeve of chain drum).

Fig. 3, Fig. 4 are that the perspective view of the different perspectives of Fig. 2 (shows the two rivet clasp points and pin of the first lever and chain drum Bolt).

Fig. 5, Fig. 6 are the perspective views for the different perspectives that the second lever shown in Fig. 2 and third lever are connected firmly through two rivet clasp points.

Fig. 7, Fig. 8 are the perspective views of chain drum and the assembly of the first, second, third lever.

Fig. 9 is the main view of Fig. 8.

Figure 10 is connected firmly on right crank to the main view of power piece.

Specific embodiment

Fig. 2, Fig. 6, Fig. 8 are shown, a kind of bicycle use mechanical booster component assembly, including, axis 2, chain drum 1 and right crank 6, characterized in that the chain drum 1 and right crank 6 are mounted on axis 2 through key respectively；Have at 1 center of chain drum for the installation of axis 2 Axle sleeve 1a；Second lever 4 is made of the arm of force of semicircular arc and two weighing arms, referring to fig. 2, has pivot on the arm of force left end 4c, right end are connect with two weighing arms, which is located at chain disk center upper and lower position, and two weighing arm shapes are similar to a right convex arc Shape.There is a pivot 4c on the arm of force；Five 5a of rivet clasp point and six 5b of rivet clasp point on third lever 5 is respectively and on the second lever 4 Three 4a of rivet clasp point and four 4b of rivet clasp point riveting and form two or three lever assemblies, third, the 4th lever are through on the 4th lever For hole 5d movable set on the axle sleeve 1a of chain drum 1, the line of four 4b of three 4a of rivet clasp point and rivet clasp point passes through the central point of chain drum 1, The distance of the three 4a central point of rivet clasp point is greater than four 4b of rivet clasp point to the distance of the central point, and the pivot 4c on the second lever 4 is arrived The line of the central point perpendicular to or be approximately perpendicular to the line of rivet clasp point three, four 4a, 4b, and the pivot 4c on the second lever 4 Distance to the distance of the central point greater than three 4a of rivet clasp point to central point；The shape of the shape of first lever 3 and the second lever 4 It is identical；First lever 3 is fixed on chain drum 1 through one 3a of rivet clasp point and two 3b of rivet clasp point and forms central symmetry with the second lever 4, A pin 3c is fixed on the arm of force of the semicircular arc of first lever；Above-mentioned two or three lever assembly passes through 5 gravity of third lever Hole 5c movable set on arm is on the pin 3c of the first lever；It is fixedly connected with one on 2 end of nearly axis of right crank 6 to power piece 7, gives Power piece is sleeved on the pivot 4c of the second lever 4 through sets of holes 7a thereon.

Existing right crank and chain drum are integrated global facility.Pivot 4c is a steel cylinder.First lever and second Lever is in 180 ° of center symmetric settings (referring to Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 7, Fig. 9, Figure 10).

On second lever 4 line of four 4b of three 4a of rivet clasp point and rivet clasp point perpendicular to or be approximately perpendicular to the second lever 4 The arm of force where semi arch string.

On second lever 4 distance of rivet clasp point three 4a to 1 central point of chain drum be four 4b of rivet clasp point to 1 central point of chain drum away from From 2 times.

The line of pivot 4c central point passes through 1 center of chain drum on pin 3c central point and the second lever 4 on first lever 3 Point, the line perpendicular to or be approximately perpendicular to line on the second lever 4 between four 4b of three 4a of rivet clasp point and rivet clasp point.

I.e. rivet clasp point one, two, three, four is conllinear.

Embodiment: chain disk diameter 200mm, the right left crank length of crank 170mm(are identical), power length of a film 60mm is given, axis is straight Diameter 16mm, two weight arms of the second lever long 30mm and 60mm, the long 235mm of the arm of force respectively.Pin 3c and pivot 4c is to chain drum The distance at center is 190mm, and the distance of three 4a of rivet clasp point and rivet clasp point four 4b to chain disk center is respectively 60mm and 30mm.

Claims (4)

1. a kind of bicycle use mechanical booster component assembly, including, axis (2), chain drum (1) and right crank (6), characterized in that The chain drum (1) and right crank (6) are mounted on axis (2) through key respectively；Have at chain drum (1) center for axis (2) installation Axle sleeve (1a)；Second lever (4) is made of the arm of force of semicircular arc and two weighing arms, there is a pivot (4c) on the arm of force； Rivet clasp point five (5a) and rivet clasp point six (5b) on third lever (5) respectively on the second lever (4) rivet clasp point three (4a) and Rivet clasp point four (4b) rivets and forms two or three lever assemblies, and third, the 4th lever are through mesoporous (5d) movable sleeve on the 4th lever On the axle sleeve (1a) of chain drum (1), the line of rivet clasp point three (4a) and rivet clasp point four (4b) passes through the central point of chain drum (1), The distance of rivet clasp point three (4a) central point is greater than the distance that rivet clasp point four (4b) arrives the central point, the pivot on the second lever (4) Axis (4c) to the central point line perpendicular to or be approximately perpendicular to the line of rivet clasp point three, four (4a, 4b), and the second lever (4) distance of pivot (4c) to the central point on is greater than the distance that rivet clasp point three (4a) arrives central point；The shape of first lever (3) Shape is identical as the shape of the second lever (4)；First lever (3) is fixed on chain drum through rivet clasp point one (3a) and rivet clasp point two (3b) (1) central symmetry is formed on and with the second lever (4), is fixed with a pin on the arm of force of the semicircular arc of the first lever (3c)；Above-mentioned two or three lever assembly passes through hole (5c) movable set on third lever (5) weight arm in the pin of the first lever On (3c)；One is fixedly connected with to power piece (7) on nearly axis (2) end of right crank (6), is sleeved on to power piece through sets of holes (7a) thereon On the pivot (4c) of second lever (4).

2. a kind of bicycle use mechanical booster component assembly according to claim 1, characterized in that second lever (4) on the line of rivet clasp point three (4a) and rivet clasp point four (4b) perpendicular to or be approximately perpendicular to the arm of force institute of the second lever (4) In the string of semi arch.

3. a kind of bicycle use mechanical booster component assembly according to claim 2, characterized in that second lever (4) distance of rivet clasp point three (4a) to chain drum (1) central point is the 2 of the distance that rivet clasp point four (4b) arrives chain drum (1) central point on Times.

4. a kind of bicycle use mechanical booster component assembly according to claim 1 or 2 or 3, characterized in that described first The line of pivot (4c) central point passes through chain drum (1) central point on pin (3c) central point and the second lever (4) on lever (3), The line perpendicular to or be approximately perpendicular to line on the second lever (4) between rivet clasp point three (4a) and rivet clasp point four (4b).