CN206984211U

CN206984211U - Bicycle

Info

Publication number: CN206984211U
Application number: CN201720813087.3U
Authority: CN
Inventors: 闫树军; 李勇; 万畅; 师广强
Original assignee: Tarim University
Current assignee: Tarim University
Priority date: 2017-07-06
Filing date: 2017-07-06
Publication date: 2018-02-09
Anticipated expiration: 2027-07-06

Abstract

The utility model discloses a kind of bicycle, it is related to transport field.Main technical schemes of the present utility model are：A kind of bicycle, including：Car body, including framework, front-wheel, trailing wheel, car chair and handlebar；Front wheels and rear wheels are connected to framework, and the first distance is provided between front wheels and rear wheels；Handlebar is rotationally connected with front-wheel and framework, and extends to away from front-wheel direction；Car chair includes chaise longue and saddle, and chaise longue includes sitting part and rest portions, and rest portions are connected to sitting part, and form angle with sitting part；Sitting part is fixedly connected on framework, and saddle is fixedly connected on support bar, and support bar is rotationally connected with rest portions；When saddle horse, saddle is rotated between chaise longue and front-wheel；When lie ride when, saddle is rotated between chaise longue and trailing wheel；First transmission group, including the first force piece, the first chain and first the second transmission group of drive, including the second force piece, the second chain and the second drive.

Description

Bicycle

Technical field

It the utility model is related to transport field, more particularly to a kind of bicycle.

Background technology

Bicycle, also known as bicycle or bicycle, it is a kind of small-sized ground vehicles that footboard drives are trampled with manpower.Voluntarily Car is typically two wheels, also there is three-wheel, but is mainly used in shipping, relatively rare.In the world first really it is practical from Driving came across for 19 beginnings of the century.1817, German De Laisi invented the wooden two-wheeled cycle with handlebar in Paris, FRA. Bicycle rapidly becomes the vehicles of European's favor at that time after coming out.19th century, some Europeans also contemplated some reasons The bicycle figure thought.In today, due to the popularization of automobile and subway, the people using bicycle as the vehicles significantly reduces, Bicycle of today is even more a kind of personal hobby, therefore cycling of lying also occurs.

In the prior art, can be more tired out after saddle horse bicycle rides for a long time, it is recreational relatively low；And lie and ride The comfort level of bicycle and recreational higher, but sight is relatively low for playing, and is unfavorable for view and plays, while it is low to promote power Under.For riding, it can all be reduced using same way, interest for a long time.And people's trip can not make simultaneously With saddle horse and lie cycling, while it is higher to buy two bicycle costs, it is also necessary to more parking spaces, while maintenance into This is also higher.

Utility model content

In view of this, the utility model embodiment provides a kind of bicycle, and main purpose is to provide a kind of collection saddle horse and lain Ride the bicycle being integrated so that a bicycle can meet two kinds of forms.

To reach above-mentioned purpose, the utility model mainly provides following technical scheme：A kind of bicycle, including：

Car body, including framework, front-wheel, trailing wheel, car chair and handlebar；The front-wheel and the trailing wheel are connected to the frame Frame, the first distance is provided between the front-wheel and the trailing wheel；The handlebar is rotationally connected with the front-wheel and the framework, and Extend to away from the front-wheel direction；

The car chair includes chaise longue, saddle and support bar, and the chaise longue includes sitting part and rest portions, and the rest portions connect The sitting part is connected to, and angle is formed with the sitting part；The sitting part is fixedly connected on the framework, and the saddle is consolidated Surely support bar is connected to, the support bar is rotationally connected with the rest portions；When saddle horse, the saddle is rotated to described and lain Between chair and the front-wheel；When lie ride when, the saddle is rotated between the chaise longue and the trailing wheel；

First transmission group, including the first force piece, the first chain and the first drive；The first drive rotation connection In the framework；First chain is surrounded on first drive and the trailing wheel, and first force piece is fixedly connected In first drive；When first force piece rotates, first drive is around its axis rotation；

Second transmission group, including the second force piece, the second chain and the second drive；The second drive rotation connection In the handlebar；Second chain is surrounded on second drive and the front-wheel, and second force piece is fixedly connected In second drive；When second force piece rotates, second drive is around its axis rotation.

Further, in addition to brake apparatus, including brake and rim brake, the brake are connected to the rim brake, institute State brake and be arranged on the trailing wheel, the rim brake is arranged on the handlebar；When using the rim brake, the brake makes The trailing wheel of motion slows down or stopped.

Further, the handlebar includes fixed part and extension；One end of the fixed part be rotationally connected with it is described before Wheel and the framework, and extend to away from the front-wheel direction；The other end is rotationally connected with the extension；The extension is Two, set up separately in the fixed part both sides；When lie ride when, described two extensions are rotated towards the rest portions, are easy to control The front-wheel steer.

Further, in addition to base and damper, one end of the damper are connected to the sitting part, and the other end connects The base is connected to, the base is slidably connected to the framework.

Further, in addition to angle modulation hinge, one end of the angle modulation hinge are connected to the rest portions, and the other end is connected to institute Sitting part is stated, the angle is adjusted.

Further, first drive is multiple gears, and the multiple gear is coaxially disposed, and the multiple gear is straight Footpath is successively decreased successively, and first chain is wound in one of them described gear；The multiple gear is provided with derailleur, for inciting somebody to action First chain is pushed on the adjacent gear；The fixed part is provided with controller, and the controller is connected to described Derailleur.

Further, in addition to Mobile phone fixer, the Mobile phone fixer are fixedly connected on the fixed part, are easy to fix Mobile phone.

Further, in addition to four foot-operated；First force piece is two, is set up separately in first drive two Side, and set in opposite direction；Second force piece is two, is set up separately in the second drive both sides, and along phase negative side To setting；Ride for described four and be rotationally connected with two first force pieces and two second force pieces respectively.

A kind of bicycle that the utility model embodiment proposes, including：Car body, the first transmission group and the second transmission group；Car Body includes framework, front-wheel, trailing wheel, car chair and handlebar；Front wheels and rear wheels are connected to framework, and the is provided between front wheels and rear wheels One distance；Handlebar is rotationally connected with front-wheel and framework, and extends to away from front-wheel direction；Car chair includes chaise longue, saddle and support Bar, chaise longue include sitting part and rest portions, and rest portions are connected to sitting part, and form angle with sitting part；Sitting part, which is fixed, to be connected Framework is connected to, saddle is fixedly connected on support bar, and support bar is rotationally connected with rest portions；When saddle horse, saddle is rotated to lying Between chair and front-wheel；When lie ride when, saddle is rotated between chaise longue and trailing wheel；First transmission group includes the first force piece, the One chain and the first drive；First drive is rotationally connected with framework；First chain is surrounded on the first drive and trailing wheel, the One force piece is fixedly connected on the first drive；When the first force piece rotates, the first drive is around its axis rotation；Second passes Dynamic group includes the second force piece, the second chain and the second drive；Second drive is rotationally connected with handlebar；Second chain ring around In the second drive and front-wheel, the second force piece is fixedly connected on the second drive；When the second force piece rotates, the second transmission Wheel is around its axis rotation.In the prior art, can be more tired out after saddle horse bicycle rides for a long time, it is recreational relatively low； Although and the comfort level for cycling of lying and recreational higher, sight is relatively low for playing, and is unfavorable for view and plays.It is right For riding, it can all be reduced using same way, interest for a long time.And people's trip can not use saddle horse simultaneously With lie cycling, while buy two bicycle costs it is higher, it is also necessary to more parking spaces, at the same maintenance cost also compared with It is high.The utility model uses saddle, chaise longue, the first transmission group and the second transmission group so that and saddle horse and lie and ride and can arbitrarily switch, Rotating connector can complete saddle horse and the switching ridden of lying, and switching mode is simple and convenient, and it is same both to have reached the purpose taken exercises When can also increase the enjoyment ridden.And it is more convenient for later maintenance, while will not also increase bicycle floor space.

Brief description of the drawings

Fig. 1 is a kind of bicycle positive structure diagram that the utility model embodiment provides；

Fig. 2 is a kind of bicycle overlooking the structure diagram that the utility model embodiment provides.

Embodiment

Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken, Below in conjunction with accompanying drawing and preferred embodiment, to according to the utility model proposes bicycle embodiment, structure, feature and Its effect, describe in detail as after.

As shown in Figure 1 and Figure 2, the utility model embodiment provides a kind of bicycle, including：

Car body, including framework 1, front-wheel 2, trailing wheel 3, car chair 4 and handlebar 5；Above-mentioned front-wheel 2 and above-mentioned trailing wheel 3 connect respectively The first distance is provided between said frame 1, above-mentioned front-wheel 2 and above-mentioned trailing wheel 3；Above-mentioned handlebar 5 is rotationally connected with above-mentioned front-wheel 2 With said frame 1, and to away from the above-mentioned direction of front-wheel 2 extend；

Above-mentioned car chair 4 includes chaise longue 41, saddle 42 and support bar 43, and above-mentioned chaise longue 41 includes sitting part 411 and rest portions 412, above-mentioned rest portions 412 are connected to above-mentioned sitting part 411, and form angle 413 with above-mentioned sitting part 411；Above-mentioned sitting part 411 are fixedly connected on said frame 1, and above-mentioned saddle 42 is fixedly connected on support bar 43, and above-mentioned support bar 43 is rotationally connected with State rest portions 412；When saddle horse, above-mentioned saddle 42 is rotated between above-mentioned chaise longue 41 and above-mentioned front-wheel 2；When lie ride when, will Above-mentioned saddle 42 is rotated between above-mentioned chaise longue 41 and above-mentioned trailing wheel 3；Combined in above-mentioned saddle 42 and above-mentioned chaise longue 41 so that make With personnel for Ride Style can free switching, while switching mode is simple, will not excessively increase volume again.

First transmission group 6, including the first force piece 61, the first chain 62 and the first drive 63；Above-mentioned first drive 63 are rotationally connected with said frame 1；Above-mentioned first chain 62 is surrounded on above-mentioned first drive 63 and above-mentioned trailing wheel 3, and above-mentioned One force piece 61 is fixedly connected on above-mentioned first drive 63；When above-mentioned first force piece 61 rotates, above-mentioned first drive 63 around its axis rotation；In saddle horse, above-mentioned first transmission group 6 is active force, and now above-mentioned trailing wheel 3 is driving wheel, and above-mentioned Saddle 42 it is preferably provided as adjustable height, and adjustment mode has a variety of, and one is to be slidably connected to above-mentioned support bar 43, and one is The above-mentioned height of chaise longue 41 is adjusted, can also be the pin-and-hole that multiple different heights are set on above-mentioned support bar 43, above-mentioned saddle 42 It is upper that pin is set, the above-mentioned height of saddle 42 is adjusted by the way that pin to be coupled to the pin-and-hole of different height, so different people can It is adjusted to each comfortably highly use above-mentioned first transmission group 6.

Second transmission group 7, including the second force piece 71, the second chain 72 and the second drive 73；Above-mentioned second drive 73 are rotationally connected with above-mentioned handlebar 5；Above-mentioned second chain 72 is surrounded on above-mentioned second drive 73 and above-mentioned front-wheel 2, and above-mentioned Two force pieces 71 are fixedly connected on above-mentioned second drive 73；When above-mentioned second force piece 71 rotates, above-mentioned second drive 73 around its axis rotation.Lie ride when, above-mentioned second transmission group 7 is active force, and now above-mentioned front-wheel 2 is driving wheel, user Member rotates above-mentioned saddle 42 between above-mentioned chaise longue 41 and above-mentioned trailing wheel 3, and people is sitting in above-mentioned sitting part 411, and leans against above-mentioned Rest portions 412, and above-mentioned second force piece 71 is trampled to move.

A kind of bicycle that the utility model embodiment proposes, including：Car body, the first transmission group 6 and the second transmission group 7； Car body includes framework 1, front-wheel 2, trailing wheel 3, car chair 4 and handlebar 5；Front-wheel 2 and trailing wheel 3 are connected to framework 1, and front-wheel 2 is with after The first distance is provided between wheel 3；Handlebar 5 is rotationally connected with front-wheel 2 and framework 1, and extends to away from the direction of front-wheel 2；Car chair 4 wraps Chaise longue 41, saddle 42 and support bar 43 are included, chaise longue 41 includes sitting part 411 and rest portions 412, and rest portions 412 are connected to seating Portion 411, and form angle 413 with sitting part 411；Sitting part 411 is fixedly connected on framework 1, and saddle 42 is fixedly connected on support Bar 43, support bar 43 are rotationally connected with rest portions 412；When saddle horse, saddle 42 is rotated between chaise longue 41 and front-wheel 2；When Lie when riding, saddle 42 is rotated between chaise longue 41 and trailing wheel 3；First transmission group 6 includes the first force piece 61, the first chain 62 With the first drive 63；First drive 63 is rotationally connected with framework 1；First chain 62 is surrounded on the first drive 63 with after Wheel 3, the first force piece 61 is fixedly connected on the first drive 63；When the first force piece 61 rotates, the first drive 63 is around it Axis rotation；Second transmission group 7 includes the second force piece 71, the second chain 72 and the second drive 73；Second 73 turns of drive It is dynamic to be connected to handlebar 5；Second chain 72 is surrounded on the second drive 73 and front-wheel 2, and the second force piece 71 is fixedly connected on second Drive 73；When the second force piece 71 rotates, the second drive 73 is around its axis rotation.In the prior art, saddle horse is voluntarily , can be more tired out after vehicle commander's time rides, it is recreational relatively low；Although and the comfort level for cycling of lying and it is recreational compared with Height, but sight is relatively low for playing, and is unfavorable for view and plays.For riding, for a long time using same way, interest Taste can all reduce.And people trip can not simultaneously using saddle horse and cycling of lying, while two bicycles of purchase into This is higher, it is also necessary to more parking spaces, while maintenance cost is also higher.The utility model uses saddle 42, chaise longue 41, the One transmission group 6 and the second transmission group 7 so that saddle horse and lie and ride and can arbitrarily switch, rotating connector can complete saddle horse and lie The switching ridden, switching mode is simple and convenient, has both reached the purpose taken exercises while or can increase the enjoyment ridden.And for It is more convenient for later maintenance, while will not also increase bicycle floor space.

Below by way of the working process and principle of bicycle in the present embodiment, the bicycle in the present embodiment is illustrated：

During saddle horse, above-mentioned saddle 42 is rotated between above-mentioned chaise longue 41 and above-mentioned front-wheel 2, rides in above-mentioned saddle 42 On, it is used as onward impulse using above-mentioned first transmission group 6；Lie when riding, above-mentioned saddle 42 rotate to above-mentioned chaise longue 41 and it is above-mentioned after Between wheel 3, above-mentioned sitting part 411 is sitting in, leans against above-mentioned rest portions 412, onward impulse is used as using above-mentioned second transmission group 7.

The utility model is described in further detail with reference to the accompanying drawings and examples.

As shown in Fig. 2 for the ease of making above-mentioned bicycle slow down or even stop, specifically, also include brake apparatus, including Brake and rim brake 81, above-mentioned brake are connected to above-mentioned rim brake 81, and above-mentioned brake is arranged on above-mentioned front-wheel 2, above-mentioned rim brake 81 are arranged on above-mentioned handlebar 5；When using above-mentioned rim brake 81, above-mentioned brake makes the above-mentioned front-wheel 2 of motion slow down or stop. When needing to slow down, above-mentioned rim brake 81 is used so that above-mentioned brake limits the rotation of above-mentioned front-wheel 2, so as to reach deceleration Effect, the effect even up to stopped.

As shown in figure 1, forward lean during due to saddle horse, lies and is leaned back when riding, in order to also can conveniently make when lying and riding With above-mentioned handlebar 5, specifically, above-mentioned handlebar 5 includes fixed part 51 and extension 52；One end rotation connection of fixation portions 51 Extend in above-mentioned front-wheel 2 and said frame 1, and to away from the above-mentioned direction of front-wheel 2；The other end is rotationally connected with above-mentioned extension 52；Above-mentioned extension 52 is two, is set up separately in the both sides of fixation portions 51；When lie ride when, above-mentioned two extension 52 rotate court To above-mentioned rest portions 412, it is easy to control above-mentioned front-wheel 2 to turn to.Leaned back when being ridden due to lying, apart from fixation portions 51 compared with Far, be unfavorable for manipulating the direction of above-mentioned front-wheel 2, therefore use above-mentioned extension 52 so that lie be more convenient for controlling when riding it is above-mentioned before Wheel 2.And during saddle horse, due to forward lean, fixation portions 51 need to be helped, plays a part of support to body, now in order to not Stop arm, above-mentioned extension 52 is rotatable towards the above-mentioned direction of front-wheel 2, and again above-mentioned extension 52 is turned to when lying and riding State the direction of rest portions 412.It is changed to stretch arm when riding due to lying, for ease of crawl, above-mentioned extension 52 is L-type, the bending of L-type Joint mechanics are more comfortable when place not only to capture, while also act certain anti-drop function.Above-mentioned extension 52 and above-mentioned Some projections can be set in the position of the hand of fixed part 51 crawl, are carried out when being perspired available for summer people's palm of the hand anti-skidding.

In order that it is more comfortable when must use, specifically, also include base and damper, one end connection of above-mentioned damper In above-mentioned sitting part 411, the other end is connected to above-mentioned base, and above-mentioned base is slidably connected to said frame 1.Above-mentioned damper makes Above-mentioned bicycle at the ground by jolting, above-mentioned bicycle can be with earth shock, and now above-mentioned damper can then buffer This vibrations so that user of service experiences the vibrations weakened, can greatly improve experience sense.And the setting of above-mentioned base The distance between above-mentioned chaise longue 41 and above-mentioned second transmission group 7 can be adjusted, is easy to the people comfortable practical above-mentioned the of different heights Two transmission groups 7, experience very much the enjoyment lain and ridden.

Due to different people using chaise longue 41 when, for lean on when comfortable angle be different, specifically, also including Angle modulation is cut with scissors, and one end of above-mentioned angle modulation hinge is connected to above-mentioned rest portions 412, and the other end is connected to above-mentioned sitting part 411, makes above-mentioned folder Angle 413 can be adjusted.The above-mentioned folder between above-mentioned rest portions 412 and above-mentioned sitting part 411 can be adjusted using above-mentioned angle modulation hinge Angle 413, and above-mentioned angle 413 is fixed so that lie and consolidated when riding.

In order to can more be regulated the speed at any time in riding, while the not too many power of expense, specifically, above-mentioned the One drive 63 is multiple gears, and above-mentioned multiple gears are coaxially disposed, and above-mentioned multiple gear diameters successively decrease successively, above-mentioned first chain Bar 62 is wound in one of said gear；Above-mentioned multiple gears are provided with derailleur, for above-mentioned first chain 62 to be pushed In adjacent said gear；Fixation portions 51 is provided with controller, and controller noted above is connected to above-mentioned derailleur.Due to above-mentioned First connector often rotates a circle, and is 360 degree, and runs the girth of above-mentioned first drive 63, and this is for difference Different angles is then turned over for the said gear of execution, so as to have the function that speed governing, simultaneously for for user of service simultaneously Effortlessly, different speed can just be enjoyed.And controller noted above is arranged in fixation portions 51 so that user of service's energy It is enough to enter line translation, simple operation in the case where not stopping riding.

Because present urban development is fast, road changes more, while in order to which view, user of service may arrive the ground do not known well Side, for the ease of using Mobile Telephone Gps, specifically, also including Mobile phone fixer, above-mentioned Mobile phone fixer is fixedly connected on above-mentioned Fixed part 51, it is easy to fix mobile phone.Can be without hand-held mobile phone using above-mentioned Mobile phone fixer so that both hands are held in above-mentioned car It is safer on 5, being rided for user of service, and for the ease of saddle horse and lie to ride and can use mobile phone, above-mentioned hand Machine fixator can rotate, and be the scope that mobile phone display screen can be observed in human eye all the time, while effectively prevent from getting lost.

As shown in Figure 1 and Figure 2, in order to improve the comfort level of riding, specifically, also including four foot-operated 9；Above-mentioned first is dynamic Power part 61 is two, is set up separately in the above-mentioned both sides of first drive 63, and set in opposite direction；Above-mentioned second force piece 71 is two It is individual, set up separately in the above-mentioned both sides of second drive 73, and set in opposite direction；Aforementioned four foot-operated 9 is rotationally connected with two respectively Individual above-mentioned first force piece 61 and two above-mentioned second force pieces 71.Due to using above-mentioned first force piece 61 and above-mentioned second During force piece 71, it usually needs it is comprehensive to trample above-mentioned first force piece 61 and above-mentioned second force piece 71, if above-mentioned first is dynamic Power part 61 and above-mentioned second force piece 71 are arranged to former rod, more meet arch, but easily skid；If squarely, corner angle are set Pin can be pressed against again, therefore sets above-mentioned foot-operated 9, can be rotated so that pin can be trampled in the plane all the time.Due to above-mentioned first dynamic Power part 61 and above-mentioned second force piece 71 are respectively used to make above-mentioned first drive 63 and above-mentioned drive to move, therefore above-mentioned the One force piece 61 and above-mentioned second force piece 71 can be set for the eccentric in above-mentioned first drive 63 and above-mentioned second drive On 73, or crank is separately positioned on the axle center of above-mentioned first drive 63 and above-mentioned drive, can be stepped on so as to reach Step on the effect of rotation.

It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with the power The protection domain that profit requires is defined.

Claims

A kind of 1. bicycle, it is characterised in that including：

Car body, including framework, front-wheel, trailing wheel, car chair and handlebar；The front-wheel and the trailing wheel are connected to the framework, The first distance is provided between the front-wheel and the trailing wheel；The handlebar is rotationally connected with the front-wheel and the framework, and to Extend away from the front-wheel direction；

The car chair includes chaise longue, saddle and support bar, and the chaise longue includes sitting part and rest portions, and the rest portions are connected to The sitting part, and form angle with the sitting part；The sitting part is fixedly connected on the framework, and the saddle, which is fixed, to be connected Support bar is connected to, the support bar is rotationally connected with the rest portions；When saddle horse, by the saddle rotate to the chaise longue with Between the front-wheel；When lie ride when, the saddle is rotated between the chaise longue and the trailing wheel；

First transmission group, including the first force piece, the first chain and the first drive；First drive is rotationally connected with institute State framework；First chain is surrounded on first drive and the trailing wheel, and first force piece is fixedly connected on institute State the first drive；When first force piece rotates, first drive is around its axis rotation；

Second transmission group, including the second force piece, the second chain and the second drive；Second drive is rotationally connected with institute State handlebar；Second chain is surrounded on second drive and the front-wheel, and second force piece is fixedly connected on institute State the second drive；When second force piece rotates, second drive is around its axis rotation.
2. bicycle according to claim 1, it is characterised in that also including brake apparatus, including brake and rim brake, institute State brake and be connected to the rim brake, the brake is arranged on the front-wheel, and the rim brake is arranged on the handlebar；When making During with the rim brake, the brake makes the front-wheel of motion slow down or stop.
3. the bicycle according to any one of claim 1 or 2, it is characterised in that the handlebar includes fixed part and prolonged Extending portion；One end of the fixed part is rotationally connected with the front-wheel and the framework, and extends to away from the front-wheel direction；Separately One end is rotationally connected with the extension；The extension is two, is set up separately in the fixed part both sides；When lie ride when, it is described Two extensions are rotated towards the rest portions, are easy to control the front-wheel steer.
4. bicycle according to claim 3, it is characterised in that also including base and damper, the one of the damper End is connected to the sitting part, and the other end is connected to the base, and the base is slidably connected to the framework.
5. bicycle according to claim 4, it is characterised in that also cut with scissors including angle modulation, one end connection of the angle modulation hinge In the rest portions, the other end is connected to the sitting part, the angle is adjusted.
6. bicycle according to claim 5, it is characterised in that first drive is multiple gears, the multiple Gear is coaxially disposed, and the multiple gear diameter successively decreases successively, and first chain is wound in one of them described gear；It is described Multiple gears are provided with derailleur, for first chain to be pushed to the adjacent gear；The fixed part is provided with Controller, the controller are connected to the derailleur.
7. bicycle according to claim 6, it is characterised in that also consolidate including Mobile phone fixer, the Mobile phone fixer Surely the fixed part is connected to, is easy to fix mobile phone.
8. bicycle according to claim 7, it is characterised in that also foot-operated including four；First force piece is two It is individual, set up separately in the first drive both sides, and set in opposite direction；Second force piece is two, is set up separately described Second drive both sides, and set in opposite direction；Ride for described four and be rotationally connected with two first force pieces respectively With two second force pieces.