CN2191168Y - Labour-saving speed increaser for bicycle and tricycle - Google Patents

Abstract

The utility model relates to a labour-saving speed increaser for bicycles and tricycles. A spring arm rod component (2), an arm rod supporter (3), the structure of a spring regulating mechanism and the installation position of a protecting cover (6) are improved. The midsection of the arm rod body is made into a through-groove; the front part of the through-groove is provided with a buffer block; the middle part and a transmission rod are kinked; the rear part is provided with a floating filler block. The utility model has the advantages of compact structure, convenient maintenance, safe use, and triple effects of labour saving, acceleration and uniform speed.

Description

Labour-saving speed increaser for bicycle and tricycle

The utility model relates to non-power-driven vehicles such as bicycle, three-wheel vehicle, belongs to the accessory device of general vehicle.

The applicant discloses a kind of simple in structure in the patent No. is (bicycle, three-wheel vehicle labour saver) document of CN90214814.1, the significant bicycle in labor-saving effect, three-wheel vehicle labour saver, by practice, find that other structures of part such as armed lever body, dowel bar and floating pad are not too reasonable, cause bicycle, three-wheel vehicle to occur the phenomenon that gets stuck of dowel bar and cam in the process of moving once in a while.

The purpose of this utility model is exactly the weak point at the CN90214814.1 patent, significant improvement has been done in its spring armed lever assembly, the structure of spring regulating device and the installation site of protective cover, made the more superior bicycle of its performance, the laborsaving speed increaser of three-wheel vehicle.

The utility model is by the cam that is fixed on bicycle, three-wheel vehicle left side crank medial surface; Two symmetrical noses of cam are equipped with antifriction-bearing box respectively; The spring armed lever assembly that the cam bottom contacts with antifriction-bearing box on the cam is fixed on the spring arm rod bearing of car body upper support spring armed lever assembly one end; Be fixed on the elastic force control apparatus that connects with the spring armed lever assembly other end by extension spring on the car body; Be fixed on the spring arm rod bearing, on the adjustment seat of elastic force control apparatus, with cam, spring armed lever assembly, the totally-enclosed protective cover of the movement parts of elastic force control apparatus is formed.

Spring arm rod unit of the present utility model is on the basis of the spring arm rod unit of CN90214814.1 patent, groove is made in the stage casing of armed lever body, the front portion of groove fixedly mounts a bump rubber, middle part hinge knot is installed dowel bar, rear portion hinge knot is installed a floating pad, and floating pad can fluctuate by action of the spring.

Elastic force control apparatus of the present utility model is that the control seat with disclosed elastic force control apparatus in the CN90214814.1 patent documentation is fixed on bicycle handle bar standpipe bottom (three-wheel vehicle can be down pipe top) instead, adjustment seat is fixed on the bicycle profile tube bottom, fixing ratchet on the hand moving rod of hinge knot and the adjustment seat on the control seat, sheave that interfixes and following moving rod hinge knot are on adjustment seat, hand moving rod and following moving rod are connected by the stone dead wire axle sleeve, on the hand moving rod handle knob and following moving rod on ratchet by another stone dead wire axle sleeve connection.

The utility model is compared with the CN90214814.1 patent, has following advantage:

1, owing to improved the shape of the structure of spring armed lever and dowel bar, floating pad, thoroughly eliminated the phenomenon that gets stuck that dowel bar and cam occur once in a while when riding, increased the sense of security by bike.

2, improved the manufacturability of spring arm rod unit, made its weight saving and be easy to processing, installation and maintenance are convenient.

3, changed the rigging position of elastic force control apparatus control seat and protective cover, make protective cover bottom apart from ground up to the standard-required of bicycle, profile is more attractive in appearance, it is more comfortable to ride.

4, the extension spring upper end directly is hooked on the sheave, has dwindled volume like this, has reduced cost again.

Below drawing of the present utility model is done following explanation:

Fig. 1 is the bicycle External view that laborsaving speed increaser has been installed.

Fig. 2 is the structural representation of bicycle of the present utility model, the laborsaving speed increaser of three-wheel vehicle.

Fig. 3 is the structural representation of the utility model spring armed lever assembly.

Fig. 4 is the structural representation of the utility model bicycle, the laborsaving speed increaser embodiment 2 of three-wheel vehicle.

Fig. 5 is the utility model bicycle, the constructional drawing of the laborsaving speed increaser hand of three-wheel vehicle moving rod hinge knot on control seat.

Embodiment one, (with reference to accompanying drawing 1,2,3,5)

The bicycle of present embodiment, the laborsaving speed increaser of three-wheel vehicle be by cam (1), spring arm rod unit (2), and spring arm rod bearing (3), extension spring (4), the elastic force control apparatus, protective cover (6) is formed.

Cam (1) is fixed on bicycle, three-wheel vehicle left side crank medial surface, and antifriction-bearing box (7, the 7 ') symmetry at cam (1) two ends is installed, and distance (2R1) is 60 millimeters, and bearing designation 200, race diameter are 30 millimeters.Axis left side crank one side that bicycle, three-wheel vehicle use at this moment is than 18 millimeters of axial lengths in the standard, to guarantee to have enough space mounting cams.

Spring arm rod unit (shown in Figure 3) comprises that the stage casing has the armed lever body (8) that groove rear end working curved surface is 45 millimeters concave surfaces, the anterior hard-wired bump rubber (9) of the groove of armed lever body (8); The dowel bar (10) that groove middle part hinge knot is installed has a moving tooth above the hinge knot place of dowel bar, and the other end end face of dowel bar (10) is the concave and convex surface shape; The floating pad (11) that groove rear portion hinge knot is installed, the lateral surface at the hinge knot place of floating pad (11) have one with dowel bar (10) on the contact surface that matches of moving tooth.The afterbody of floating pad (11) has a spring conductor rod, and stage clip (23) is housed, and it can upper and lowerly be floated.

One end of armed lever body (8) and armed lever bearing (3) hinge knot also are fixed on the car body, and the hinge of armed lever bearing (3) and bicycle, three-wheel vehicle half breadth are (R2) 60 millimeters, and the other end connects with sheave (5) by extension spring (4).

The elastic force control apparatus is (as Fig. 1, shown in 3) by the control seat (14) that is fixed on bicycle handle bar standpipe (26) bottom be fixed on the adjustment seat (15) of standpipe (13) bottom, be installed in the hand moving rod (16) on the control seat (14), handle knob (17) on the hand moving rod (16), be fixed on the ratchet (18) on the adjustment seat (15), the hinge knot is installed in adjustment seat (15) and goes up the sheave (5) and the following moving rod (19) that can rotate, following moving rod (19) is gone up ratchet (20) and the retracing spring (24) that cooperates with ratchet (18), with hand moving rod (16) and following moving rod (19), handle knob (17) and stone dead wire axle sleeve (21 that ratchet (20) links up, 22) and the stone dead wire axle sleeve deck (25) that is fixed on down pipe (27) bottom constitute.

Protective cover (6) is fixed on armed lever bearing (3) and the adjustment seat (15), and the movement parts of cam (1), spring armed lever assembly (2), extension spring (4), elastic force control apparatus is totally-enclosed.

Principle of work of the present utility model is to spend regional energy accumulation by stepping on 135 of the work done of putting forth one's strength under the human body, and releases energy in the bad 45 degree zones of putting forth one's strength of human body.Promote the chain drum work done.Be when pedaling under the left foot, the crank descending cam (1) that drives the inboard in a left side rotates counterclockwise, the concave and convex surface of dowel bar (10) front end on antifriction-bearing box (7) and the spring armed lever assembly (2) contacts, armed lever body (8) is shifted to anticlockwise direction, elongate spring and long-pending merit, to the utmost point prescribe a time limit when dowel bar (10) pendulum, antifriction-bearing box (7) promptly breaks away from the concave curved surface of dowel bar and enters the recessed bent driving surface of armed lever body (8) rear end.And take advantage of a situation and depress floating pad (11) and continue long-pending merit, dowel bar (10) resets under the pressure of floating pad (11) and action of gravity and contacts with bump rubber (9).When three centers of centre of gration of cam (1), antifriction-bearing box (7) and armed lever body (8) in line the time, extension spring (4) begins to shrink, and the floating pad (11) that drives armed lever body (8) and return forces cam (1) to drive chain drum to continue to do.After the long-pending merit of extension spring (4) all discharges, antifriction-bearing box (7) breaks away from armed lever body (8), the antifriction-bearing box (7 ') that while cam (1) is gone up the other end contacts with the concave and convex surface of dowel bar (10) front end, pedals under the right crus of diaphragm, promptly repeats the long-pending merit motion of following one-period.Circulate like this, the trailing wheel of bicycle, three-wheel vehicle just obtains continuously, steady, uniform power.Reach significant laborsaving speedup purpose at the uniform velocity.

Embodiment two (as shown in Figure 4)

Present embodiment and embodiment one difference are control seat in the elastic force control apparatus (14) and hand are removed partly part cancellation of adjusting, adjustment seat (15) is contained in bicycle, three-wheel vehicle manages on (27) down, directly regulate class with foot-operated moving rod (19) down and ratchet (20), at this moment the center angle of the antifriction-bearing box of cam (1) one end and left crank is 60 degree, and all the other parts and embodiment are together.

Claims (4)

1, a kind of bicycle, the laborsaving speed increaser of three-wheel vehicle is by being positioned at bicycle, the cam (1) of three-wheel vehicle left side crank medial surface, two symmetrical noses of cam (1) are equipped with antifriction-bearing box (7 respectively, 7 '), the spring armed lever assembly (2) that cam (1) bottom contacts with antifriction-bearing box on the cam (1), be fixed on the spring arm rod bearing (3) of car body upper support spring armed lever assembly (2) one ends, be fixed on the elastic force control apparatus that connects with spring armed lever assembly (2) other end by extension spring (4) on the car body, totally-enclosed cam (1), spring armed lever assembly (2), movement parts such as elastic force control apparatus are fixed on spring arm rod bearing (3), protective cover (6) on the elastic force control apparatus adjustment seat (15) is characterized in that:

(1), spring armed lever assembly (2) is by an end and spring arm rod bearing (3) hinge knot, the armed lever body (8) of groove is done in the stage casing that the other end connects with extension spring (4), the anterior fixing bump rubber (9) of armed lever body (8) groove, the floating pad (11) that dowel bar (10) that middle part hinge knot is installed and rear portion hinge knot are installed constitutes.

(2), the elastic force control apparatus is by the control seat (14) that is fixed on bicycle handle bar standpipe (26) bottom, be fixed on the adjustment seat (15) of standpipe (13) bottom, hinge knot interfixes at hand moving rod (16) on the control seat (14) and the ratchet (18) that is fixed on the adjustment seat (15), sheave (5) and the following moving rod (19) of hinge knot on adjustment seat (15), the stone dead wire axle sleeve (21) that connects hand moving rod (16) and following moving rod (19), on the connection hand moving rod (16) handle knob (17) and following moving rod (19) on stone dead wire axle sleeve (22) formation of ratchet (20).

2, laborsaving speed increaser according to claim 1, it is characterized in that dowel bar (10) one ends and armed lever body (8) hinge knot place above a moving tooth is arranged, other end end face is concave and convex surface.

3, laborsaving speed increaser according to claim 1 and 2, the lateral surface that it is characterized in that floating pad (11) and armed lever body (8) hinge knot place have a contact surface that matches with dowel bar (10) moving tooth, and the afterbody of floating pad (11) has a stage clip pilot bar.

4, laborsaving speed increaser according to claim 1 is characterized in that the concave curved surface of the back upper end of armed lever body (8) should match around the space orbit that axis rotates with antifriction-bearing box (7, the 7 ') outer ring on the cam (1).

Images