JP2003320974A - Saddle structure for bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a waist to slide from a main saddle to a sub-saddle for enabling a leg to abut on the earth to attain stable traveling of a bicycle 1 when stopping or restarting the bicycle 1 by placing the sub-saddle 8' in front of the main saddle 8. <P>SOLUTION: A narrow d sub-saddle 8' and a broad main saddle 8 tiltable and directing to the sub-saddle 8' are disposed in front and back of a fork 7' of a seat post 7' extended upward from a stand tube 5. A driver 20 seats on the main saddle 8 during normal traveling and seats on the sub-saddle 8' at the time of traveling on a bad road R', halting at a crossing or restarting to easily abut on the earth with his/her leg 23. Thus, the driver 20 can ride it stably with an optimum power-factor to traveling. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

[Industrial application] The disclosed technology is a saddle structure that allows a bicycle to be smoothly stowed in an optimal sitting posture when it is run, and that it can be safely and reliably run on general roads and rough roads. Belongs to the technical field of.

[0002]

2. Description of the Related Art As is well known, with the recent rise of various industries and improvement of civic life, the transportation of goods and things has become extremely large. The number of transportation means has become extremely active, and in addition to the widespread use of private cars, automobile traffic such as buses and trucks on general roads has reached the peak of congestion. Bicycles as a means of commuting to and from school, etc. are very useful in combination with a health-oriented trend as a convenient means of transportation, and they are always used for shopping for housewives and picking up and going to kindergartens. Is starting to appear.

[0003] Therefore, the tremendous number of bicycles used causes a social problem due to the shortage of so-called bicycle parking lots and congestion due to illegal bicycle parking in urban areas and the like. Since it is necessary to sew between articles left on the street and cars that go and go, relatively light bicycles and sports type bicycles are becoming more frequently used in addition to ordinary bicycles. It is

The general mode of the bicycle is briefly described with reference to FIG. 6. The bicycle 1 has a frame with sufficient strength and rigidity, and is lightweight, and economically cost for manufacturing the bicycle. As a mode that does not resonate, a lower pipe 4 that connects the upper pipe 2 (a special type that is curved downward for women) and the lower chain stay 3 and a rear fork 4'are provided. Further, a standing pipe 5 is obliquely provided between the respective pipes to form a rigid structure, and the rear fork 4 ′ and the upper pipe 2 and a connecting portion 6 of the standing pipe 5 are adjusted to be expandable and contractible. So that the seat post 7 is fitted with a fitting means, and a saddle 8 having a spring 9 and the like is disposed on the upper portion thereof, the front connecting portion connecting portion between the lower pipe 4 and the upper pipe 2 is provided. Fork 11 extending obliquely forward from 10 On the other hand, a front wheel 13 such as a rubber tire is rotatably provided through a spoke 12, and a steering wheel 14 for steering is attached to a front pipe 15 extending upward from the front coupling portion 10 and also a rubber rear portion. A wheel 16 is provided at the intersection of the chain stay 3 and the rear fork 4'through the spokes 12 as well, and a drive (not shown) is provided at the joint between the upright pipe 5, the lower pipe 4 and the chain stay 3. A gear is provided, and a chain (not shown) is stretched between a small-diameter driven gear (small sprocket) provided at the center of the rear wheel 16, and pedals 17, 17 for applying a driving source for traveling are provided. 7 are symmetrically provided via a pair of gear cranks 18, and as shown in FIG. 7, the driver 20 sits on the saddle 8 and puts the foot 23 of the foot on the pedal 17, Rear wheel by rotating 18 It is a general mode that a driving force is applied to 16 to carry out steering by a three-point support of the handle 14 and the saddle 8 to perform a predetermined traveling.

As is well known, houses are densely built in urban areas such as around stations, and new towns and housing complexes are increasingly built in the suburbs one after another. .

Therefore, the commuters and commuter between the new town or housing complex and the station should avoid the traffic congestion, and
Due to the recent health-oriented reasons, etc., the bicycle 1 has been used recently, and the shortest distance from home to the train station is becoming the reverse way of traveling.

When the bicycle 1 travels,
As shown in FIG. 7, when the road R is flat and in a normal ordinary road condition, the driver 20 normally sits on the saddle 8 with his / her waist, and through the shin 22 and the tarsal part. 23 is flexed flexibly, power is applied to the pedal 17, and the gear crank 1
The driving force is transmitted to the bicycle 1 via 8 and the running power is transmitted to the rear wheels 16 by a chain (not shown), so that the steering wheel 1
The normal mode is a mode in which the vehicle travels by giving steering to the front wheels 13 by means of No. 4.

However, as described above, a new town in the suburbs, which is separated from the urban area to some extent, and the housing complex are generally located in newly constructed areas such as hills and valleys in the mountainous forest area, and are located at general bicycle positions. In this case, the height position of the saddle 8 is set so that either the right or left foot part 23 is installed on the ground R so as not to fall when the vehicle is stopped.

Incidentally, in such a kneeling posture, the knee is bent, and it is impossible to row at an appropriate power factor.

Therefore, the road R to the station is smooth and good even at the shortest distance from the new town or housing complex to the station, but the road including the slopes and steep slopes is a bad road R '. In many cases, the driver 20 usually takes the shortest route as short as possible due to restrictions such as the departure time of trains, etc. Road R such as rough road as shown in
Generally, there are many ´.

Therefore, it is more appropriate that the position of the saddle 8 is higher than usual in order to give a sawing force.

However, for the bicycle 1, the pedal 1
As shown in FIG. 7, the efficient power factor of the force applied by the foot part 23 applied to 7 is as follows. When the gear crank 18 pushes the pedal 17 downward from above the road surface R, R ′, As shown in FIG. 9, from the parallel posture, the angle range of θ ₁ on the upper side and θ ₂ on the lower side, for example, the angle range of 40 degrees to 45 degrees is the most efficient power factor for driving the rear wheel 16 with respect to the gear 24. It is not only empirical that the power is good, but also experimentally well known to the other person, and even on a flat road R, it is quite necessary to drive with the legs bent in the strike. It requires leg power, and as described below, it does not require power, and it is possible to have a strike that is quite unnecessary.

Therefore, as shown in FIG. 8, the driver 20 optimizes the driving force for the rear wheel 16 via the gear 24 in order to drive the bicycle 1 on the road R'such as the rough road. As shown in FIG. 7, when the thigh 21 and the shin 22 are in the bending posture with respect to the saddle 8, the applied force of the foot portion 23 with respect to the pedal 17 is not sufficiently generated so that the power factor is transmitted. As shown, the driver 20 lifts his / her waist from the saddle 8 and assumes a so-called standing posture, and the thigh 21 and the shin 22
Of the bicycle 1 in the meantime so as to minimize the bending of the body and maximize the force applied to the pedal 17 of the foot 23 in the moment. For stability, the smooth movement is performed by the three-point support method for the handle 14.

Such a sawing action phenomenon is a striking mode that a normal bicycle driver 20 normally takes, and can be said to be a very reasonable driving posture.

[0015]

However, as shown in FIG. 8 described above, when the driver 20 travels on the road R'in poor condition, the driver 20 stands on the bicycle 1 and stands on both pedals 17, 17 in a standing posture. In the posture of applying the sawing force, since the handle 14 is only stabilized by gripping the handle 14 with both hands, as shown in FIG. Compared to the stable operation mode, there is a drawback that the stability is lacking, and steering operation is extremely difficult.

In order to deal with this, if the saddle 8 is set at a high position, it is considered that the vehicle can run optimally without bending the legs too much, but there is still the inconvenience that no technique corresponding to this has been devised. was there.

With respect to the bicycle 1 as shown in FIG. 8, when the driver 20 is in a standing posture, that is, in a so-called jerky state,
There is also the disadvantage that there is an unexpected danger when driving at low speeds because the waist is not seated on the saddle 8.

Further, when the vehicle stops at an intersection with a red light in the standing posture, and when the vehicle restarts, the tarsal portion 23 does not contact the ground, and there is a negative point that may cause instability and instability. there were.

[0019]

The object of the invention of this application is to use the bicycle 1 for commuting, commuting to school, shopping, and picking up and transferring infants, even on a general road including the roads R and R'in poor condition R '. Gear crank 18 to give 16 optimum power
The driver 20 selectively transfers the pedaling force to the pedal 17 to a pair of saddles, a main saddle and a sub saddle, which are installed in front of and behind the top of the vertical pipe 5 of the bicycle, and is stable with a slight initial biasing force. The seating position between the main saddle and the sub-saddle, which gives the posture and can apply the sawing force in the optimum posture, and which gives the maximum sawing force in the optimum posture, is the optimum posture of the driver. Therefore, it is possible to choose the seat to be used mainly when starting and stopping, so that the main saddle is located at a high position such as a position where it is easy to squeeze during general driving. Being able to move the waist diagonally to the sub-saddle and install the tarsal part to allow a stable posture and allow the driver to freely stop and drive, which will be useful in the field of safety technology when riding bicycles in the transportation industry. Is intended to St. provides an excellent bicycle saddle structure.

[0020]

In order to solve the above-mentioned problems, the structure of the invention of the present application, which has the above-mentioned object and has the subject matter of the above-mentioned claims, is constructed in order to solve the above-mentioned problems. A saddle structure is provided at a plurality of positions with respect to a seat post provided in a coupling portion, and the main saddle is selectively tilted so that the main saddle is at a high position that produces the highest power factor of the driver's operation. The main position is that the main saddle in the high position and the sub saddle in the low position are installed side by side, so that the swinging motion easily tilts slidably with respect to the sub saddle of the main saddle by the initial biasing force. So that the swiveling movement is performed by a latch type or a fastening band type. Between stoppers A pivotable movement regulating fixed via a lever to adjust it, in which took technical means also as disposed in telescoping seatpost.

[0021]

With the above structure, when the bicycle user needs to accelerate or decelerate on a bad road or a normal road for commuting, attending school, shopping, or picking up and dropping, the bicycle is driven at the optimum power factor for the pedal. When reducing the applied force, in order to transmit the force from the thigh to the shin via the thigh, add weight linearly without bending the thigh, shin, or foot as much as possible. The main saddle is located at a high position so that the user can move the hip to the low position sub saddle. Too low forward, or
In order to be able to set it to the low position to the rear, and to move the hips by transferring to the proper position by tilting to the proper position with a slight biasing force, and sitting down to operate the pedal with the optimum power factor. , From the base end portion of the standing pipe, through the coupling portion, the sub seat post to be connected is branched and set and fixed in a predetermined manner, or through the latch mechanism, the fastening band, and the like, in a predetermined direction with respect to the sub saddle, Alternatively, when it is placed rearward, it is when flexing the foot that the force is efficiently applied through the sub-saddle, and when the normal running is performed, the foot is extended almost linearly from a position where the knee is not so bent. State (position)
It sits on the main saddle.

As described above, the main saddle is pivoted and fixed at a predetermined angle to be fixed, or the main saddle is tilted with respect to the sub saddle as desired between the upper pipe and the connecting portion which are close to the lower pipe, For example, a sub-saddle fixed separately from the main saddle may be fixed at a position substantially right above the pedal and at a front-rear position so as to be at a predetermined position,
To change the sitting posture from the main saddle to the sub saddle, grasp the handle and take the reaction force to the vehicle body by the three-point support system so that the waist can be smoothly transferred back and forth through a slight biasing force, At that time, the width of the sub-saddle is made narrower than that of the main saddle so that the seating posture can be smoothly changed, and the driver takes the driving posture while sitting on the sub-saddle in the front-back posture. Keep it in a stable state, and keep the foot root as curved as possible through the thigh and shin to extend the pedal so that the driving force can be applied at a comfortable power factor and stable. It is possible to run smoothly with the seated posture, sit down at the front and rear positions of the sub-saddle when stopped at an intersection or when the vehicle reoccurs, and take a stable posture with the tarsal part on the ground. ,
In each mode, the main saddle and the sub saddle are configured so that the fixed posture can be selected via the latch mechanism or the fastening band mechanism so that the driver can maintain the sitting state in the most stable driving posture.

The important points of the invention of this application are: 1) A high side main saddle and a low level sub saddle are installed side by side, and the sitting posture can be changed according to the driving condition. 2) When the vehicle stops or reoccurs. It is possible to prevent the vehicle from tipping over to the ground when the vehicle is in contact with the ground to ensure stability, and 3) tilt the main saddle slightly to transfer to the sub-saddle smoothly.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a mode for carrying out the invention of this application will be described as an embodiment mode with reference to FIGS. 1 to 5.

It is to be noted that the same aspects as those in FIG. 6 and subsequent figures will be described using the same reference numerals.

In the embodiment shown in FIG. 1, a front and rear pivotable seat post 7'of a branch type is provided on the standing pipe 5 so that it can be fastened and unfastened at its base end so as to extend the connection. In the aspect of the embodiment, the seat post 7 ′ is obliquely planted from the upper end of the standing pipe 5 substantially parallel to the standing pipe 5, and the main saddle 8 is provided on the upper end of the seat post 7 ′ via a latch mechanism 27 described later. The seat post 7'is provided.
A sub-saddle 8'of a lower set height is normally provided at the upper end of the branching portion 7 "of the upper pipe 2 with respect to the upper pipe 2 when the vehicle is stopped on a road R'with a predetermined bad angle shown in FIG. Sometimes, a sawing force can be applied normally, and a branch portion 7'standing from the standing pipe 5 is provided.
The sub-post 7 ″ is erected in a non-rotatable manner with respect to the standing pipe 5 ′ through the screw joint 21 ′ on the sub-post “′, and thus, in the aspect of the embodiment shown in FIG. In this case, a seat post 7'for setting the main saddle 8 via a screw joint 21 is provided at a high position of a normal predetermined height position, and a sub seat post of the sub saddle 8'is provided at a rear part via a predetermined fixed span. The height of the 7 ″ ″ is adjustable via a screw joint 21 ′, and as shown in FIG. 3, a sub-saddle 8 ′ having a width d which is narrower than the width D of the main saddle 8 is set. In this way, the driving posture due to the transfer can be smoothly changed, and the transfer between the two can be smoothly performed. As shown in FIGS. A pivot pin that integrally has a lever 23 on its back side. A latch mechanism 27 is provided between the stoppers 26, 26 for restricting the latch teeth 25 to a predetermined rotation range of 90 degrees via the pin 24, and is rotated in a rotation angle of 90 degrees. The main saddle 8 is oriented with respect to the sub saddle 8'and tilted by a slight initial biasing force of the waist to shift the sitting posture.

In the case of stopping at a rough road R'or an intersection as shown in FIG. 8 or restarting, for example, sitting on the lower sub-saddle 8'and installing the foot part 23 of one foot on the ground. The fall of the main saddle 8 of the sub-saddle 8 ′ can be prevented by preventing the fall and stabilizing the posture.
The same operation and effect can be obtained regardless of whether it is installed before or after.

Thus, in the mode shown in FIG. 1, the optimum power factor can be applied, and the substantial operational effect is the same. In this mode, the driver 20 is seated on the main saddle 8 and the steering wheel 14 is seated. With a kind of three-point support system, whether the thigh portion 21 and the shin portion 22 with respect to the stable driving posture pedal 17 are in a straight line state, most of the weight is applied to the foot portion 23, and the ground is grounded for safety. The optimum driving force can be applied to the pedal 17 most effectively within the range of θ ₁ and θ ₂ shown in FIG.

The main saddle 8 of the seat post 7 '
An expansion joint is arranged on the side.

In this embodiment, since the sub-saddle 8'is set at the front position / posture set position, the driver 20 takes a kind of so-called three-point support system together with the steering wheel 14 to obtain a stable driving posture. Therefore, normal running can be done smoothly and comfortably.

In this embodiment, the driver 2
In order to apply a driving force with an optimum power factor to the pedal 17 in the posture of sitting on the main saddle 8 when 0 is normal traveling or traveling on a rough road R ', the front of the sub saddle 8' When changing from the main saddle 8 to the standing position posture, the handle 14 and the saddles 8 and 8 '
The reaction force is applied to the vehicle body by the point support system, and the waist is slightly inclined to apply an initial biasing force to the body slightly, and the main saddle 8 is tilted as shown by the dotted line to change trains.

Since the width d of the sub saddle 8'is narrower than the width D of the main saddle 8 as shown in FIG. 3, the buttocks for the main saddle 8 are slightly moved to the sub saddle 8'side via the latch mechanism 27. When the buttock is urged to, the buttocks are transferred and can be transferred without any interference.

Further, the pivot pin 24 is rotated by an appropriate manual operation from above the main saddle 8 of the driver 20 of the lever 23, and both latch teeth 25 are rotated through the rotation of the screw 24 '.
It is made possible to maintain a fixed state by engaging with each other so as not to turn.

Further, when the main saddle 8 is tilted with respect to the sub saddle 8'by a slight force as shown by the dotted line, the latch mechanism 27 is controlled by the lever 23, so that the latch mechanism 27 swivels smoothly and after the transfer movement. That posture is maintained.

The instability caused by swinging in the turning direction is prevented by the fixing action of the lever 23 during traveling.

Then, after applying the driving force to the rear wheel 16 to the pedal 17 with one foot, the gear crank 18 moves to 18
By rotating 0 degree, the driving force can be applied with the optimum power factor by the next one leg next time in a predetermined cycle.

Thus, in the embodiment shown in FIG.
The height position of the lower sub-saddle 8'installed on the main saddle 8 can be adjusted to a predetermined low height by screws 21 and 21 '(either one can be used). The seat post 7'provided can be adjusted midway through the screw joint 21.

Further, in the embodiment shown in FIG.
When driving with the main saddle 8 placed in front of the pedal, the pedal 1
No influence is exerted on the posture in which the driving force is applied to 7.

A mode in which the sub-saddle 8'is installed in the latter stage can be adopted. In this mode, when transferring from the main saddle 8 to the sub-saddle 8 ', the buttocks (not shown) are moved backward to the latch mechanism 27. It may be performed by the biasing force or by loosening the fastening band by the lever 23 and smoothly as shown by the dotted line.

Also in this embodiment, since the reaction force is applied to the vehicle body by the three-point support system for the handle 14 and the saddle, the initial biasing force of slight slip of the buttocks can be performed without any difficulty. It should be noted that the embodiment shown in FIG. 1 is better for practical use than the embodiment shown in FIG.

The embodiment shown in FIG. 1 is more suitable for practical use than the embodiment shown in FIG.

It is to be noted that the sub-saddle 8'may be a retrofit type for design purposes.

It is also possible to apply the most efficient running force to the pedal 17 and apply the driving force to the rear wheels 16 at a suitable power factor, which is also achieved. The operation and effect are the same as those of the above-described embodiment, and in this aspect of the set shape in which the sub saddle 8'is connected and extended to the main saddle 8, the sub seat post 7 '' by a stopper pin or the like (not shown) for the sub seat post 7 '' is By maintaining the fixed posture, it is possible to apply a stable driving force with an optimum power factor.

Thus, in the embodiment shown in FIG. 3, the width d of the sub saddle 8'is made narrower than the width D of the main saddle 8,
Further, it is a mode in which the pedal 17 and the gear crank 18 are located substantially right above the centers of the pedals 17 and the gear crank 18 and are at a predetermined height and higher, so that the sawing force can be maximized. The main saddle 8 to the sub-saddle 8 so that you do not fall when you shift to
You can move to ´, change trains, sit down and put your feet on the ground to have a stable posture. In that case, the subsaddle 8 ′
Since it is formed to have a narrow width d, there is no interference when the seating posture needs to be changed, and no trouble occurs.

Further, the same effect can be obtained even when the optimum sawing force is applied at the time of departure.

Therefore, in the embodiment shown in FIG. 3, the sub-saddle 8'is in a posture in which it is suitable for the driver to apply the sawing force to the pedal 17 with the most preferable power factor.
You can change to and move to a seated posture,
When stopping at a red traffic light at an intersection or the like, it is possible to prevent falling by moving to the sub-saddle 8'positioned in front of or behind the main saddle 8 to change the seated posture, contact the foot with the ground in a low posture, and prevent the fall. I can.

To apply the sawing force at the time of restarting, the sawing force may be applied to the pedal 17 by the sub saddle 8 '.

Thus, the main seat saddle 8 is rid of the seated posture, and then the seated posture is moved back and forth to the sub saddle 8'at the time of traveling on the rough road R ', which is most efficient. Try to drive at a power factor.

Needless to say, the embodiments of the invention of the present application are not limited to the above-mentioned respective embodiments. For example, the main saddle 8 is usually of a type that is longer than the center and the so-called three-point support system is used. Apply the driving force to the pedal 17 at an optimum power factor in a stable posture, or use the sub saddle 8
It is also possible to employ a variety of modes, such as that the vendor can attach the ′ to the main saddle 8 afterwards.

Then, the sub saddle 8'of the main saddle 8
It goes without saying that a band fastening system for the pin 24 can be adopted instead of the tilting direction with respect to the pin via the latch mechanism.

[0051]

As described above, according to the invention of this application, basically, when the bicycle runs on a road on a bad road, the bicycle is seated on the main saddle 8 at a high position with respect to the pedal attached to the gear crank. The posture that applies the driving force to the pedal with the highest power factor in a suitable posture and applies the weight to the tarsal portion through the thigh or shin, and applies the force linearly to the pedal within the set range. In order to show that you can drive the most lightly, and also to lean down without leaning on your body in a stool position, where your feet are right underneath and the installation underneath is your feet thrown forward However, it is the most efficient one, and when traveling on a bad road, with a stable posture in which the hips were moved to the sub-saddle 8'and seated, the legs were put on the pedals through the weight, It is possible to apply a curvilinear driving force to the tarsal part through the thigh and shin Without taking the running unstable posture to, it can be operated in a stable posture, Thus also, the excellent effect of lightly performed smoothly even uphill travel or the like are obtained.

The main saddle 8 to the sub saddle 8 '
At the time of transferring to and changing to, the reaction force is applied to the vehicle body by adopting a three-point support system between the handle 14 and the saddle,
When the buttock is moved and biased in the direction of inclination through the initial biasing force, an excellent effect is obtained in which a slight initial biasing force is applied to perform stable and smooth operation.

Then, the power can be exerted, or the power can be applied at the time of normal running with the highest power factor, and the foot is almost fully extended when the pedal is at the lowest position. You can also

Moreover, although the driving force having the optimum power factor can be applied by stepping, the steering wheel 3 and the saddle 3
With the point support system, a reaction force is applied to the vehicle body, and the buttocks can be slid from the main saddle 8 to the sub saddle 8'smoothly in a slanting direction with a slight biasing force, and a small distance can be slid by the initial biasing force. There is an excellent effect that can be done, the main saddle 8 to the sub-saddle 8'which tilts the waist
Since the vehicle can be driven to a safe posture with a so-called three-point support posture together with the steering wheel 14 after being seated, the excellent effect that the vehicle can be safely driven even on a narrow road, a curved steep road or the like is exhibited.

The sub-saddle can be used not only on bad roads but also on normal roads.

Further, by adjusting the movement of the sub saddle to the high and low displacement positions according to the driver's preference, the driver's
The excellent effect of being able to run at an optimum power factor is achieved.

In addition, the structure is simple because the main saddle and sub-saddle can be freely moved back and forth and up and down with respect to the seat post via the branch portion provided on the upright pipe. There is no need to replace extra parts and the initial adjustment is easy, and the excellent effect is that it is cheap to use.

When the vehicle stops at a red light at an intersection or the like, the sub saddle is changed to change the legs into a bent posture, and the passenger is unstable in a sitting posture, and there is a possibility of falling. However, in that case, when transferring to a lower-order sub-saddle, the reaction force is applied to the vehicle body by the three-point support system of the steering wheel and saddle, so the urging force of the slide is smoothly applied with a slight force, and the waist is moved. By setting the posture so that the tarsus reaches the ground, it does not fall and the stable state can be maintained.

When re-starting, the passenger can sit on the sub-saddle and travel stably.

[Brief description of drawings]

FIG. 1 is a schematic side view in which a sub-saddle according to an embodiment of the invention of this application is pre-installed.

FIG. 2 is a side view showing a state in which a sub-saddle is installed afterwards.

FIG. 3 is a plan view showing the arrangement of both saddles.

FIG. 4 is a side view of the main saddle and the latch mechanism.

5A and 5B are explanatory views of an embodiment of the bicycle of the invention of this application, FIG. 5A is a plan view of a latch-free state, and FIG.

FIG. 6 is a schematic side view of a normal bicycle.

FIG. 7 is a schematic side view of sitting of the normal bicycle in a driving state in a sitting posture.

FIG. 8 is a schematic side view of running on a rough road in a conventional posture with the driver standing.

FIG. 9 is a schematic side view showing the efficiency of applying a driving force to a pedal of a gear crank.

[Explanation of symbols]

1 bicycle 5 vertical pipes 2 Upper pipe 4 Lower pipe 4'After Hawk 6 connection 19,19 'seat post 7'seat post section 8 main saddle 8'sub saddle 17 pedals 11 thigh 22 shin 23 Tarsus 27 Latch mechanism 26 Stopper 25 latch teeth

Claims (4)

[Claims] 1. A thigh and a shin of a driver with respect to a pedal of a gear crank in which a sub saddle for a main saddle is provided at a plurality of positions side by side with a seat post provided at a joint portion of a vertical pipe, an upper pipe and a rear fork of a bicycle. In the saddle structure of the bicycle in which the main saddle and the sub saddle are provided side by side, the main saddle and the sub saddle are selectively positioned and fixed so that the legs and the foot are in the posture that produces the optimum sawing force. A saddle structure for a bicycle, wherein the bicycle saddle structure is provided so as to be tilted freely via a tilting mechanism that is directed at a predetermined angle. 2. The saddle structure for a bicycle according to claim 1, wherein the tilting mechanism is pivotally movable by a pair of latch mechanisms. 3. The saddle structure for a bicycle according to claim 1, wherein the tilting mechanism is of a fastening band type so as to be freely rotatable and fastened. 4. The saddle structure for a bicycle according to claim 1, wherein the predetermined angle is an angle between front and rear stoppers.