CN205737931U - There is the electric bicycle of double disc brake - Google Patents

Abstract

This utility model provides a kind of electric bicycle with double disc brake, including vehicle frame, vehicle seat, mounting seat and handle, rear wheel is installed at vehicle frame rear portion, and vertical tube is installed in vehicle frame front portion, riser upper portions installs mounting seat, is provided with front vehicle wheel by shock-absorbing front fork device bottom vertical tube；Mounting knob in mounting seat；The wheel shaft two ends of front vehicle wheel are respectively mounted the first disc brake and the second disc brake, the wheel shaft both sides of rear wheel are respectively mounted the 3rd disc brake and the 4th disc brake, the brake cable of the first disc brake and the second disc brake is connected with the first brake cable respectively, first brake cable end is connected with wherein handlebar, the brake cable of the 3rd disc brake and the 4th disc brake is connected with the second brake cable respectively, and the second brake cable end is connected with another root handlebar.Four disc brakes of this product make the stress of forward and backward wheel shaft be more uniformly distributed, good braking effect；Even if indivedual disc brakes produce " malfunctioning " situation, do not interfere with the braking quality of this product, improve traffic safety.

Description

There is the electric bicycle of double disc brake

Technical field

This utility model relates to bicycle art, especially relates to a kind of electrical salf-walking with double disc brake Car.

Background technology

Along with China's rapid development of economy, the energy and environmental protection have become two hang-ups of society.For Effective protection environment, protection resource, government department take many effective measures limit motorcycle, The upper road of fuel bicycle, bicycle has become the preferred traffic instrument of people's trip, along with its demand Amount constantly increases, and it is more and more higher to the requirement of bicycle to ride the person of sailing, and bicycle lamp becomes voluntarily The requisite part of car.According to statistics, the death toll of bicycle accident is shared in vehicle accident Ratio is at a relatively high；The major reason wherein affecting electrical salf-walking traffic safety is exactly that its brake is sensitive Property, what this had just had influence on electric bicycle rides safety.

Dish-type brake for bicycle is by a braking disc being connected with wheel and the brake at disc edge Device forms. and during brake, promote brake block to be allowed to clamp braking disc thus produce braking effect.

The mechanical disc brake used at present rubs by the brake block in clamp by the pulling force of brake cable and clamps dish Dish, produces braking effect.In prior art, mechanical disc brake is that one side brake is (i.e. before vehicle A disc brake is respectively installed in the same side of wheel and trailing wheel), namely bicycle only can be to brake block Pressing and rub in disc, the braking ability of this monolateral stress brake modes is the most bad, because braking Power all concentrates on the same side of bicycle shaft, and the opposite side of wheel shaft does not also stress, and, for a long time Use or because of other external force reasons, two discs of disc are easily deformed thus affect braking effect, shadow Ring to braking safe.

Utility model content

In order to solve above-mentioned technical problem, this utility model provide a kind of have double disc brake electronic from Driving.

A kind of electric bicycle with double disc brake disclosed in this utility model, including vehicle frame, vehicle seat, Mounting seat and handle, described vehicle frame rear portion is provided with rear wheel by wheel shaft, and described rear wheel is by wheel Hub motor drives, and the front portion of described vehicle frame is provided with vertical tube, and described riser upper portions is provided with mounting seat, The bottom of described vertical tube is provided with front vehicle wheel by shock-absorbing front fork device；Install described in described mounting seat Handle；

The two ends of the wheel shaft of described front vehicle wheel are separately installed with the first disc brake and the second disc brake, described The wheel shaft two ends of rear wheel are separately installed with the 3rd disc brake and the 4th disc brake, described first disc brake It is connected with the first brake cable respectively with the brake cable of the second disc brake, described first brake cable end and wherein one Handlebar connects, and the brake cable of described 3rd disc brake and the 4th disc brake is connected with the second brake cable respectively, institute State the second brake cable end to be connected with another root handlebar.

Further, described first disc brake, the second disc brake, the 3rd disc brake and the 4th disc brake Use mechanical disc brake device.

Further, described vehicle frame includes a down tube, in one after pipe and two upper pipes and two Pipe；

Described vertical tube is installed in the leading section of described down tube, and the rearward end of down tube connects has two to be arranged in parallel Described after pipe, the rearward end of described rear pipe connects the left and right sides of hind axle respectively,

Two upper pipes are disposed as the arc-shaped that middle part is protruded, and the leading section of two upper pipes is connected to The front end of down tube, the rearward end of two upper pipes is connected to the left and right sides of the hind axle of rear wheel； Described middle pipe is fixedly arranged on the junction of pipe after down tube and two；Pipe and the rearward end of upper pipe after described two It is respectively provided at the 3rd disc brake and the outside of the 4th disc brake.

Further, described shock-absorbing front fork device is provided with a pair, and two shock-absorbing front fork devices are the most parallel It is arranged on the both sides of front axle.

Further, described shock-absorbing front fork device includes front fork, the first connector and the second connector, Described front fork is attached with vertical tube by the first connector, and front fork is simultaneously by the second connector and peace Dress seat is attached.

Further, described mounting seat top is provided with instrument, and the sidepiece of described mounting seat is from front to back It is sequentially provided with handlebar installing hole, damper shaft installing hole and front fork connecting hole；The front portion of mounting seat is provided with For installing the locking hole of bolt locking handlebar, it is respectively equipped with bottom mounting seat and damper shaft installing hole The first through installing hole and second installing hole through with front fork connecting hole, described second installing hole For installing vertical tube；

Described handle is installed, in the locking hole that mounting seat is anterior in the handlebar installing hole in described mounting seat Being screwed with the bolt for locking handlebar, described locking hole is provided with two, two locking holes respectively with car Installing hole is through.

Further, described mounting seat is divided into the first Split seat and the second Split seat, described first split Seat and the second Split seat be attached by bolt, described handlebar installing hole be arranged on the first Split seat with The junction of the second Split seat, described locking hole is arranged on the first Split seat, and described damper shaft is pacified Dress hole, front fork connecting hole, the first installing hole, the second installing hole are separately positioned on the second Split seat.

Further, also include that central authorities' amortisseur, described central authorities amortisseur upper end are connected with mounting seat, Central authorities amortisseur bottom is attached with the first connector；

Described central authorities amortisseur includes that guide pillar, connecting rod, spring and baffle plate, described connecting rod two ends cut with scissors respectively Being connected on two the first connectors of the front vehicle wheel left and right sides, described guide pillar one end is articulated with in the middle part of connecting rod, The guide pillar other end is threaded onto in the first installing hole bottom mounting seat, and damper shaft is installed on damper shaft On installing hole and mounting seat, described spring is arranged on guide pillar, and described baffle plate is arranged in respectively and is positioned at bullet On the guide pillar at spring two ends, for spring retainer.

Further, also including the Battery case for depositing battery, described Battery case is by connecting Seat is connected with middle pipe and down tube respectively.

Further, also include that foot-driven lever, described foot-driven lever are after being fixed on by engaging lug on pipe.

Using technique scheme, the technique effect that this utility model produces has: this product is at front vehicle wheel Being separately installed with disc brake with the wheel shaft both sides of rear wheel, four disc brakes form double disc brake type braking side Formula, is braked the front wheels and rear wheels of vehicle respectively, during braking, the disc brake of front axle both sides with And the disc brake of hind axle both sides makes the stress of forward and backward wheel shaft be more uniformly distributed, good braking effect；Meanwhile, Four disc brakes in this patent simultaneously act on wheel shaft, even if indivedual disc brake produces " malfunctioning " shape Condition, does not interferes with the braking quality of this product, improves traffic safety.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model detailed description of the invention or technical side of the prior art Case, will make simply the accompanying drawing used required in detailed description of the invention or description of the prior art below Introduce, it should be apparent that, the accompanying drawing in describing below is embodiments more of the present utility model, right From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to These accompanying drawings obtain other accompanying drawing.

The structural representation of the electric bicycle with double disc brake that Fig. 1 provides for this utility model；

The Facad structure schematic diagram of the electric bicycle with double disc brake that Fig. 2 provides for this utility model；

Fig. 3 is the mounting structure schematic diagram of disc brake；

Fig. 4 is the structural representation of mounting seat；

Fig. 5 is the top view of Fig. 4；

Fig. 6 is that the A-A in Fig. 5 is to sectional view；

Fig. 7 is the structural representation of central authorities' amortisseur；

Fig. 8 is the side view of Fig. 7；

Fig. 9 is the structural representation of Battery case.

Reference:

1-vehicle frame；2-vehicle seat；3-rear wheel；4-foot-driven lever；5-vertical tube；6-mounting seat； 7-shock-absorbing front fork device；8-front vehicle wheel；9-central authorities amortisseur；10-Battery case；13-down tube；14- Middle pipe；The upper pipe of 15-；Manage after 16-；20-connects seat；21-first connecting rod；22-second connecting rod；30- Electric cabinet；61-handlebar installing hole；62-damper shaft installing hole；63-front fork connecting hole；64-locks Hole；65-the first installing hole；66-the second installing hole；67-handle；68-instrument；69-the first Split seat； 70-the second Split seat；71-front fork；72-the first connector；73-the second connector；91-guide pillar； 92-connecting rod；93-spring；94-baffle plate；101-main casing；102-radiator；103-fin； 201-the first disc brake；202-the second disc brake；203-the 3rd disc brake；204-the 4th disc brake； 205-the first brake cable；206-the second brake cable.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, aobvious So, described embodiment is a part of embodiment of this utility model rather than whole embodiments. Based on the embodiment in this utility model, those of ordinary skill in the art are not making creative work The every other embodiment obtained under premise, broadly falls into the scope of this utility model protection.

In description of the present utility model, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " etc. indicate Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description This utility model and simplification describe rather than indicate or imply that the device of indication or element must have spy Fixed orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and can not It is interpreted as instruction or hint relative importance.

Refer to Fig. 1 and Fig. 2；

A kind of electric bicycle with double disc brake disclosed in this utility model, vehicle frame 1, vehicle seat 2, peace Dress seat 6 and handle 67, described vehicle frame 1 rear portion is provided with rear wheel 3, described rear wheel 3 by wheel shaft By In-wheel motor driving, the front portion of described vehicle frame 1 is provided with vertical tube 5, and described vertical tube 5 top is installed Having mounting seat 6, the bottom of described vertical tube 5 is provided with front vehicle wheel 8 by shock-absorbing front fork device 7；Described Described handle 67 is installed in mounting seat 6；

Refer to Fig. 2 and Fig. 3；The two ends of the wheel shaft of front vehicle wheel 8 are separately installed with the first disc brake 201 With the second disc brake 202, the wheel shaft both sides of described rear wheel 3 are separately installed with the 3rd disc brake 203 He 4th disc brake 204, the brake cable of described first disc brake 201 and the second disc brake 202 is respectively with first Brake cable 205 connects, and described first brake cable 205 end is connected with wherein handlebar, described 3rd dish The brake cable of device 203 and the 4th disc brake 204 stopped is connected with the second brake cable 206 respectively, described second lock Line 206 end is connected with another root handlebar.

Preferentially, described first disc brake the 201, second disc brake 202, the 3rd disc brake 203 and Four disc brakes 204 use the most general mechanical disc brake device or hydraulic disc device.

The front wheels and rear wheels of vehicle is braked by four disc brakes respectively, during braking, and front axle both sides Disc brake and the disc brake of hind axle both sides make the stress of forward and backward wheel shaft be more uniformly distributed, braking effect The best；Meanwhile, four disc brakes in this patent simultaneously act on wheel shaft, even if indivedual disc brake produces Raw " malfunctioning " situation, does not interferes with the braking quality of this product, improves traffic safety.

Concrete, described vehicle frame 1 includes the middle pipe 14 of a down tube 13, one and two upper pipes 15 With two after pipe 16；

The leading section of described down tube 13 is provided with vertical tube 5, the rearward end of down tube 13 connect have two parallel The rear pipe 16 arranged, the rearward end of described rear pipe 16 is connected to the left and right of the hind axle of rear wheel 3 Both sides, are formed and support；

Described two upper pipes 15 are disposed as the arc-shaped that middle part is protruded, the leading section of two upper pipes 15 Being connected to the front end of down tube 13, the rearward end of two upper pipes 15 is connected to rear wheel 3 The left and right sides of hind axle；Described middle pipe 14 is fixedly arranged on the junction of pipe 16 after down tube 13 and two, Triangular support is integrally formed, strengthens support strength.

After described two, the rearward end of pipe 16 and upper pipe 15 is respectively provided at the 3rd disc brake 203 and the 4th The outside of disc brake 204.

Referring once again to Fig. 1, the shock-absorbing front fork device 7 that this product uses is provided with a pair, before two dampings Fork device 7 is set in parallel in the both sides of front axle respectively.

Preferably, described shock-absorbing front fork device 7 includes that front fork the 71, first connector 72 and second connects Part 73, described front fork 71 is attached with vertical tube 5 by the first connector 72, and front fork 71 leads to simultaneously Cross the second connector 73 to be attached with mounting seat 6.

Preferably, the front fork 71 that this product uses is set to laminated structure, and its monnolithic case is arranged For being similar to fin shape, the front fork 71 of this product, can relative to tubular type front fork 71 of the prior art Effectively to increase lifting surface area, the impact load that dispersed vehicle frame 1 and front vehicle wheel 8 produce.

Refer to Fig. 4-Fig. 6, it is preferable that the sidepiece of the mounting seat 6 that this product uses depends on from front to back Secondary it is provided with handlebar installing hole 61, damper shaft installing hole 62 and front fork connecting hole 63；Mounting seat 6 Front portion is provided with the locking hole 64 for installing bolt locking handlebar, is respectively equipped with and damping bottom mounting seat The first installing hole 65 and through with front fork connecting hole 63 second that device axle installing hole 62 is through is installed Hole 66；Described second installing hole 66 is used for installing vertical tube 5；

Described mounting seat 6 top is provided with instrument 68, in the handlebar installing hole 61 in described mounting seat 6 Handle 67 is installed, in the locking hole 64 that mounting seat is anterior, is screwed with the bolt for locking handlebar.Institute Stating locking hole 64 and be provided with two, two locking holes 64 are through with handlebar installing hole 61 respectively.Handle 67 Use electronic handle the most general in prior art, i.e. by rotate this handle can realize to speed, The control of the functions such as brake.

Preferably, the mounting seat of the present embodiment is divided into the first Split seat 69 and the second Split seat 70, described First Split seat 69 and the second Split seat 70 are attached by bolt, and described handlebar installing hole 61 sets Putting in the first Split seat 69 and junction of the second Split seat 70, described locking hole is arranged on first point In housing, described damper shaft installing hole, front fork connecting hole, the first installing hole, the second installing hole divide It is not arranged on the second Split seat.When mounting knob, first by the first Split seat from the second Split seat On unload, then by be manually placed in the second mounting seat composition handlebar installing hole semi-circular hole at, Second half semi-circular hole on first Split seat is fastened on handle, makes the first split by bolt Seat and second Split seat connect, then recycling bolt through locking hole handle is locked at handlebar install In hole 61, complete the installation of handle.

Preferably, this product is additionally provided with central authorities' amortisseur 9, described central authorities amortisseur 9 upper end and peace Dress seat 6 connects, and central authorities amortisseur 9 bottom is attached with the first connector 72.

Refer to Fig. 7 and Fig. 8；The specific scheme is that described central authorities amortisseur 9 includes guide pillar 91, connects Bar 92, spring 93 and baffle plate 94, described connecting rod 92 two ends are hingedly connected to front vehicle wheel 8 left and right sides Two the first connectors 72 on, described guide pillar 91 one end is articulated with in the middle part of connecting rod 92, guide pillar 91 The other end is threaded onto in the first installing hole 65 bottom mounting seat 6, and damper shaft is installed on damper shaft On installing hole and mounting seat, it is achieved fix mounting seat, described spring 93 is arranged on guide pillar 91, Described baffle plate 94 is arranged on the guide pillar 91 being positioned at both ends of the spring respectively, for spring retainer.

The central amortisseur 9 of this product can accept front fork 71 and come from wheel and carried by the impact on road surface Lotus；Can also accept vehicle frame 1 carries the load of driver and vehicle carried article simultaneously.

Refer to Fig. 1 and Fig. 9；This product also includes Battery case 10, and described Battery case 10 is used In depositing battery, battery is made to be isolated from the outside, it is to avoid battery is exposed to the weather for a long time and affected use In the life-span, battery is played a protective role, Battery case 10 is additionally provided with for installing extraneous circuit Installing hole.

Preferably, Battery case 10 is arranged between down tube 13 and middle pipe 14 by connecting seat 20, Battery case 10 can connect seat 20 by one or more and be fixed, in the present embodiment, if Being equipped with three and connect seat 20, one of them connects seat 20 and is arranged on middle pipe 14, and another two connects seat 20 are separately mounted in down tube 13 under upper, with three, Battery case 10 is connected seat 20 respectively and enters Row connects, and in the present embodiment, uses above-mentioned three-point mount connected mode to make Battery case 10 and middle pipe 14 Connect more firm with down tube 13.

Refer to Fig. 9, it is preferable that described Battery case 10 includes main casing 101, described main casing It is used in 101 battery is installed, is provided with the cylindric radiator 102 of protrusion on the top of main casing 101, In the present embodiment, columned radiator 102 is provided with two, and two radiators 102 are respectively provided with On the top of main casing 101, the effect of radiator 102 is the heat radiation function improving Battery case 10, Especially in summer, because ambient temperature is too high, battery operated a large amount of heat energy can be produced, and then impact electricity Pond performance, and the radiator 102 of this product can effectively increase and contacting external air area, improves Heat dispersion.

Preferably, described radiator 102 is additionally provided with some fin 103, some fin 103 in Stratiform is arranged on radiator 102, and fin 103 is in circular, and fin 103 is to radiator 102 Heat dispersion improved.

Refer to Fig. 1, this product also includes electric cabinet 30, and described electric cabinet 30 is installed on pipe 15 Top.

Preferably, electric cabinet 30 is set to streamlined the profile of motorcycle tank (moulding be similar to), The radian of the radian of its monnolithic case and upper pipe 15 is to mating, and the design of above-mentioned shape more meets human body Curve so that people's abdominal part in motion can fit in electric cabinet 30, increase experience of riding and also may be used So that having an effect when riding.

In the present embodiment, electric elements are installed in electric cabinet 30 respectively, make electric elements with extraneous Isolation, it is to avoid electric elements cause the situation of aging short circuit because exposing for a long time, extend electric elements Service life, meanwhile, ensured the security performance of electric bicycle self in ride.

Preferably, vehicle seat 2 position of the present embodiment is chosen as rear-mounted；Concrete, vehicle seat 2 is anterior Being packed in electric cabinet 30 rear portion by first connecting rod 21, both sides, vehicle seat 2 rear portion are respectively by second even The upper pipes 15 of above bar 22 and rear wheel 3 two are attached, in order to increase the damping property of vehicle seat 2 Can, spring can be installed on the connecting rod of both sides, vehicle seat 2 rear portion to reach damping efficacy.

Preferably, this product also include foot-driven lever 4, foot-driven lever 4 be fixed on by engaging lug after pipe 16 On.The pedal of the most traditional electric motor car can rotate along with chain, during riding easily Collide with accident, and the foot-driven lever of this product use fixed model to be arranged on after on pipe, not only facilitate The placement of user foot, protects foot's safety of user to a certain extent.

It is last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, It is not intended to limit；Although this utility model being described in detail with reference to foregoing embodiments, It will be understood by those within the art that: it still can be to the skill described in foregoing embodiments Art scheme is modified, or the most some or all of technical characteristic is carried out equivalent；And this A little amendments or replacement, do not make the essence of appropriate technical solution depart from this utility model each embodiment skill The scope of art scheme.

Claims (10)

1. an electric bicycle with double disc brake, it is characterised in that: include vehicle frame, vehicle seat, Mounting seat and handle, described vehicle frame rear portion is provided with rear wheel by wheel shaft, and described rear wheel is by wheel Hub motor drives, and the front portion of described vehicle frame is provided with vertical tube, and described riser upper portions is provided with mounting seat, The bottom of described vertical tube is provided with front vehicle wheel by shock-absorbing front fork device；Install described in described mounting seat Handle；

The two ends of the wheel shaft of described front vehicle wheel are separately installed with the first disc brake and the second disc brake, described The wheel shaft two ends of rear wheel are separately installed with the 3rd disc brake and the 4th disc brake, described first disc brake It is connected with the first brake cable respectively with the brake cable of the second disc brake, described first brake cable end and wherein one Handlebar connects, and the brake cable of described 3rd disc brake and the 4th disc brake is connected with the second brake cable respectively, institute State the second brake cable end to be connected with another root handlebar.

The electric bicycle with double disc brake the most according to claim 1, it is characterised in that: Described first disc brake, the second disc brake, the 3rd disc brake and the 4th disc brake use mechanical disc brake Device.

The electric bicycle with double disc brake the most according to claim 2, it is characterised in that: Described vehicle frame includes a down tube, manages after pipe and two upper pipes and two in one；

Described vertical tube is installed in the leading section of described down tube, and the rearward end of down tube connects has two to be arranged in parallel Described after pipe, the rearward end of described rear pipe connects the left and right sides of hind axle respectively,

Two upper pipes are disposed as the arc-shaped that middle part is protruded, and the leading section of two upper pipes is connected to The front end of down tube, the rearward end of two upper pipes is connected to the left and right sides of the hind axle of rear wheel； Described middle pipe is fixedly arranged on the junction of pipe after down tube and two；Pipe and the rearward end of upper pipe after described two It is respectively provided at the 3rd disc brake and the outside of the 4th disc brake.

The electric bicycle with double disc brake the most according to claim 3, it is characterised in that: Described shock-absorbing front fork device is provided with a pair, and two shock-absorbing front fork devices are set in parallel in front axle respectively Both sides.

The electric bicycle with double disc brake the most according to claim 4, it is characterised in that: Described shock-absorbing front fork device includes front fork, the first connector and the second connector, and described front fork is by the A connection piece is attached with vertical tube, and front fork is attached with mounting seat by the second connector simultaneously.

The electric bicycle with double disc brake the most according to claim 5, it is characterised in that: Described mounting seat top is provided with instrument, and the sidepiece of described mounting seat is sequentially provided with handlebar peace from front to back Dress hole, damper shaft installing hole and front fork connecting hole；The front portion of mounting seat is provided with for installing bolt lock The locking hole of tight handlebar, is respectively equipped with first installation through with damper shaft installing hole bottom mounting seat Hole and second installing hole through with front fork connecting hole, described second installing hole is used for installing vertical tube；

Described handle is installed, in the locking hole that mounting seat is anterior in the handlebar installing hole in described mounting seat Being screwed with the bolt for locking handlebar, described locking hole is provided with two, two locking holes respectively with car Installing hole is through.

The electric bicycle with double disc brake the most according to claim 6, it is characterised in that: Described mounting seat is divided into the first Split seat and the second Split seat, described first Split seat and the second Split seat Being attached by bolt, described handlebar installing hole is arranged on the first Split seat and the knot of the second Split seat At conjunction, described locking hole is arranged on the first Split seat, and described damper shaft installing hole, front fork connect Hole, the first installing hole, the second installing hole are separately positioned on the second Split seat.

The electric bicycle with double disc brake the most according to claim 7, it is characterised in that: Also include that central authorities' amortisseur, described central authorities amortisseur upper end are connected with mounting seat, central authorities amortisseur bottom It is attached with the first connector；

Described central authorities amortisseur includes that guide pillar, connecting rod, spring and baffle plate, described connecting rod two ends cut with scissors respectively Being connected on two the first connectors of the front vehicle wheel left and right sides, described guide pillar one end is articulated with in connecting rod Portion, the guide pillar other end is threaded onto in the first installing hole bottom mounting seat, and damper shaft is installed on damping On device axle installing hole and mounting seat, described spring is arranged on guide pillar, and described baffle plate is arranged in position respectively On the guide pillar of both ends of the spring, for spring retainer.

The electric bicycle with double disc brake the most according to claim 3, it is characterised in that: Also include the Battery case for depositing battery, described Battery case by connect seat respectively with middle pipe and Down tube connects.

The electric bicycle with double disc brake the most according to claim 3, it is characterised in that: Also include that foot-driven lever, described foot-driven lever are after being fixed on by engaging lug on pipe.