JPH0349115Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a two-wheeled bicycle, and in particular, to a bicycle equipped with a manual mechanism operated by a handle and used for outdoor sports. be.

[Conventional technology]

A bicycle is a device for cycling as an outdoor leisure sport. However, with conventional bicycles, by pedaling with both feet at the bottom of a frame with front and rear wheels installed at the front and rear, respectively, the rear wheel installed at the rear is rotated via a chain wheel mechanism. It is configured to run. Therefore, when riding with your thighs on the saddle, you are simply pedaling with both legs alternately, and your hands are only used to steer the direction instead of keeping your balance, so the movement is directed towards your upper body. In comparison, the body is biased toward both legs, and the weight is extremely unbalanced between the top and bottom of the body, and even when cycling long distances, the hands are too busy to reduce fatigue in the legs. If we look at this from the perspective of training and bodybuilding, we have no choice but to adopt other methods to train the upper body, and therefore, most of the training of the upper body can be achieved just by outdoor cycling. I can't.

[Problems that the invention attempts to solve]

Because of the above-mentioned defects, the conventional technology described above is equipped with a manual mechanism that can be operated using a handle, and at the same time, it is necessary to move the upper body and pedal while simultaneously pedaling the handle up and down with both hands. A problem arises in trying to provide a two-wheeled bicycle equipped with a manual mechanism that allows the bicycle to be propelled and propelled, and that allows the upper body to exercise together with the lower body.

[Means for solving problems]

In view of the above-mentioned problems of the present invention, it was proposed to solve this problem, and the front wheel is held at the tip of the main body frame by a head tube via a front fork so that it can be steered with a bar handle,
In a bicycle in which the rear end part holds a rear wheel that can be driven and rotated through a chain wheel mechanism that is rotated by a pedal provided at the bottom, the handlebar can be rotated up and down with respect to the handlebar stem. A rotary lever extending in the front-rear direction is pivotally attached to the main body framework at a substantially intermediate position between the handle and the chain wheel mechanism, and the front end of the rotary lever is connected to the main frame via a connecting rod. The rotary lever and both connecting rods are linked to a freely rotatable portion of the handle, are connected to the pedal through the other rear end so as to be able to perform a cranking motion, and are manually operated by the handle. A crank rotation mechanism is provided, and the rotation lever is divided into first and second lever members, each of which has one end rotatably supported by the pivot; It is an object of the present invention to provide a bicycle equipped with a manual mechanism characterized in that a lever joint is provided between the lever members so that they can be integrally connected in a state where they are oriented substantially forward and backward.

[Example] Hereinafter, an example of the present invention will be described in detail based on the attached drawings.

In FIG. 1, the bicycle is mounted on a front wheel via a front fork 20 held in a head tube 11 of a main body frame 10, which has substantially the same structure as a known bicycle.
The support arm 2 extends from the tip of the handle stem 22 extending upward from the inside of the head tube 11.
3 are provided substantially perpendicularly to each other and protrude forward, and a handle unit 30, which will be described later, is held at the front end of this support arm 23. Further, the rear wheel 15 is mounted on a shaft by a seat stay 13 and a chain stay 14, which extend from the upper and lower ends of the vertical tube 12 to which the saddle 40 is attached so that their tips intersect, respectively. The rear wheel 15 is rotationally driven by a chain wheel mechanism 50 provided over the entire length of the vehicle. As a feature of the present invention, a crank rotation mechanism 60 is formed between the handle unit 30 and the chain/wheel mechanism 50, as will be described in detail below.
The wheel mechanism 50 is rotatably driven.

The handle unit 30 is shown in FIGS. 1 and 2.
As shown in Figures a to c, the support arm 23 is pivotally supported at its distal end by a cylindrical bearing 24 held horizontally in the left and right directions. That is, an arcuate bar handle 31 with substantially both ends extending horizontally in the left and right directions is formed with a pair of swinging arms 32 extending in parallel forward from the center part.
By screwing both ends of this rocking arm 32 to both protruding ends of a rocking shaft 33 which is horizontally supported by the bearing part 24, a handle grip 34 can be attached to both ends with the rocking shaft 33 as a fulcrum. The handle 31 is made to move up and down. On the other hand, a latch device 35 for fixing the handle 31 so that it does not rotate is provided on one swinging arm 32 and the corresponding tip edge 241 of the bearing portion 24. In the illustrated example, the latch device 35 is a socket having a sector-shaped insertion hole 350 that generally projects radially from the tip edge 241 of the bearing portion 24 and is arranged in a row in a circular arc shape. Stop seat 351 (Fig. 2 c
), the inside of the sleeve 352 fixed orthogonally to the rocking arm 32 is always urged by a spring 353 so that its tip extends toward the insertion hole 350 of the receiving seat 351. At the same time, it is constituted by a stopper 356 which is pulled back by the inner wire 355 of the Bowden cable 354 engaged with the other end and retreats against the bias of the spring 353. The Bowden cable 354
The other end 357 is the grip 34 of the handle 31.
The inner wire 355 is pulled by rotating the lever 358, and the receiving seat 35
1, the stopper 356 can be moved backward. This latch device 35 allows the handle 3
1 and the support arm 23 at different relative angles,
The height of the handle grip 34 can be adjusted.

Note that the lever 358 is provided with means that can be fixed in the pulled state, but since this is a publicly known structure, illustration and explanation will be omitted.

As shown in FIGS. 1 and 3 a to 3e, the crank rotation mechanism 60 has a support stem 18 installed between the upper tube 16 and the lower tube 17 of the main body framework 10, so that the crank rotation mechanism 60 can be moved and adjusted. Pivot shaft 61
A bearing 61 is provided so that each can rotate freely.
a and 61b are fitted and supported, and from this bearing 61a, in one direction, a first lever member 62a as a rotating lever 62, and in the opposite direction, a first lever member 62a, and a bearing 61b.
The second lever members 62b are respectively extended from the first lever member 62b, and the first and second lever members 62b are connected to each other by means of a joint 63.
a and 62b can rotate integrally or freely rotate relative to each other around the pivot shaft 61. Further, the free end of the first lever member 62a is connected to the rotary lever 62 by means of a screw, and the first connecting rod 64 is adjustable in extension and contraction.
A is linked to the handle 31 via a universal joint 65 (see FIG. 3 d), and the free end is connected to the second lever member 62b by a chain and a second connecting rod 64b via the universal joint 65. It is linked so as to be interlocked with the pedal 51 of the wheel mechanism 50 (see FIG. 3e).

In addition, the above-mentioned cotter joint 63 has a bearing 61, respectively.
A holder 630 and a seat 630 are integrally connected to the outer periphery of the second lever member 62b of a and 61b, and each center hole 632 is formed in the holder 631 and the seat 631.
and 633 are drilled therein, and when the center holes 632 and 633 are concentrically fitted from the rear of the holder 630, a cotter pin 634 is inserted and locked at the same time, and a cotter pin 634 is held by the holder 630 and can be locked. A sleeve tube 63 fitted with a coil spring 635 that always urges the spring to protrude toward the catch seat 631 side.
6 and a cotter pin 6 that comes into contact with the rear end surface of the sleeve tube 636 and extends from the rear end of the sleeve tube 636.
34, and a cam lever 637 for retracting the rear end against the spring 635 and releasing the lock from the catch seat 631 by rotating the rear end. When the seat 631 is locked, the first and second lever members 62a and 62b are moved by the integrated rotating lever 62.
When the locks are released, they rotate without interfering with each other.

To operate the bicycle of this embodiment, first rotate the cam lever 637 of the rotor joint 63 of the crank rotation mechanism 60 so that the rotor pin 634 moves backward, and then move the first and second lever members 62a and
2b, and adjust the height position of the handle 31 according to the sitting height by pulling the lever 358 near the handle grip 34 and moving the stopper 35 of the latch device 35 through the Bowden cable.
By retracting the handlebar 31 to adjust its rotation and releasing the lever 358, normal cycling can be carried out without interlocking with pedal movements, with the handlebar 31 fixed at the desired height.

Then, by pulling the lever 358 of the latch device 35, the lever 358 is fixed in a state in which the handle 31 can be rotated, and then the foot pedaling the pedal 51 is stopped and coasting is performed, and the crank rotation is performed. The bearing 6 is attached to the second lever member 62b of the mechanism 60.
By moving the pedal 51 up and down, the catch seat 631 integrated with 1b is fitted into the holder 630 integrated with the bearing 61a on the first lever member 62a side, and the cam lever 637 of the cotter joint 63 is turned to cause the cotter pin 634 to protrude. When inserted into the center hole 633 and locked, the first and second lever members 62a, 62
b is a rotating lever 62 that rotates integrally, and is linked to the handle 31 and pedal 51 via the first and second connecting rods 64a and 64b at both ends, so that the entire crank rotation mechanism is linked. 60
will be formed. Therefore, when the chain wheel mechanism 50 is operated by pedaling the pedal 51, the handle 31 is also moved up and down by the first connecting rod 62a of the crank mechanism 60. By pulling or pushing the handle 31 up and down, the crank rotation mechanism 60
and the pedal 51 to cooperate with the driving rotation of the chain wheel mechanism 50.

[Effect of idea]

The present invention, as described above, allows the handlebar to move up and down with respect to the handlebar stem, and at the same time, the rotation of the handlebar can be transmitted to the pedals that drive and rotate the chain wheel mechanism. It has a structure with a crank rotation mechanism consisting of a lever and connecting rods at both ends, so by pedaling the handle up and down with both hands, you can work with both feet to pedal, and the chain wheel mechanism is activated. By pedaling the handlebars, in addition to exercising the legs, the user naturally bends and stretches the upper body, resulting in a full-body exercise that reduces fatigue in the lower body, something that cannot be achieved with a conventional bicycle. It provides the benefits of a full-body workout, and is also quirky and fun.

The handle unit is equipped with a latch device to fix the handle to the handle stem so that it does not rotate, and at the same time, the crank rotation mechanism is equipped with a latch device that allows the rotation lever to be rotated separately before and after its pivot point. The structure is divided into a movable first and second lever member, and a locking joint is provided near this pivot point to lock both lever members together, so that the handle can be moved by a latch device as needed. If you fix the lever at the desired height and operate the Kotta joint to release the locking of both lever members, even if the movement of the pedal rotates the second lever member, the first
Since no power is transmitted to the lever member, it can also function as a bicycle with a normal fixed handlebar.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention seen from the left front of the bicycle, Figs. Figure b is an enlarged partial cutaway view of the main part of the same unit, Figure 2c is a sectional view taken along line CC in Figure 2b, and Figures 3a to 3e show the crank rotation mechanism of the same embodiment. Figure 3a is a cross-sectional plan view of the main part of the joint, Figure 3b is a side view of the same, Figure 3c
3 is a vertical sectional side view of the first connecting rod, FIG. 3 d is a cross-sectional plan view of the main part of the second connecting rod, and FIG. 3 e is a side view of the same. Description of symbols, 10...Body frame, 11...Head tube, 12 Standing tube, 13...Seat stay, 14...Chain stay, 15...Rear wheel, 1
6...Upper tube, 17...Lower tube, 18...
...Stay, 20...Front fork, 21...
Front wheel, 22... Handle stem, 23... Support arm, 24... Bearing section, 30... Handle unit, 31... Bar handle, 32... Rocking arm, 3
3... Rocking axis, 34... Handle grip, 35...
... Latch device, 40 ... Saddle, 50 ... Chain wheel mechanism, 51 ... Pedal, 60 ... Crank rotation mechanism, 61 ... Pivot shaft, 62 ... Rotation lever, 63 ... Cotter joint, 65...Universal joint.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) At the tip of the main body frame, the front wheel is held by a head tube via the front fork so that it can be steered with a bar handle, and at the rear end of the body, the front wheel is held so as to be steerable by a pedal provided at the bottom. A bicycle having a rear wheel that can be driven and rotated through a chain wheel mechanism that is operated, wherein the handlebar is supported so as to be movable up and down relative to a handlebar stem, and the handlebar and chain wheel of the main body frame A rotary lever along the front and back direction is pivotally mounted on a pivot at an approximately intermediate position with the mechanism, and
The front end of the pivoting lever is linked via a connecting rod to the free pivoting portion of the handle, and the other rear end is connected in a cranking manner to a pedal, and the pivot lever is connected via a connecting rod to the free pivoting portion of the handle and crankably connected to the pedal via the other rear end. A crank rotation mechanism is provided, which includes the rotation lever and both connecting rods, which are manually operated by the rotation lever, and the rotation lever is connected to a crank mechanism, each of which has one end rotatably supported by the pivot shaft. A bicycle equipped with a manual mechanism, characterized in that the bicycle is divided into a first and a second lever member, and a lever joint is provided between both the lever members so that they can be integrally connected in a state where they are oriented substantially forward and backward. . (2) a catch protruding from one end of the first and second lever members, and a holder provided to face the catch from the other end of the cotter joint; The catch seat and the holder are both provided with a center hole, and when the center hole of the holder is inserted from the rear and the center hole of the catch is fitted, the catch is inserted into the same central hole and locked. a sleeve tube fitted with a coil spring that constantly urges the roller pin held by the holder to protrude toward the receiving seat, and a sleeve tube that comes into contact with the rear end surface of the sleeve tube and extends from the rear end of the sleeve tube. The rear end of the turret pin is eccentrically supported,
The bicycle according to claim 1, which comprises a cam lever for retracting the turret pin against the spring and releasing the lock from the catch seat by the rotational operation of the cam lever.