JPS6320286A - Driving force accumulation type bicycle - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a bicycle that stores energy when decelerating or descending a slope, and uses this energy as driving force when climbing or starting. .

(Prior Art) Conventionally, when a bicycle rider rides on a flat road, there is no need to step on the pedal with strong force. However, when starting the bicycle,
It is necessary to press the pedal firmly when accelerating or climbing the hill. Furthermore, bicycles equipped with a transmission device change gears when accelerating or climbing a bicycle, so that it is not necessary to press the pedals particularly hard, but it is necessary to press the pedals many times.

On the other hand, when decelerating or stopping while the bicycle is running, or when decelerating while dismounting the bicycle, the rider only uses the brakes and does not accumulate energy.

(Problems to be Solved by the Invention) In the above-mentioned conventional bicycle, when the rider uses the brake while the bicycle is running, the kinetic energy of the bicycle is simply converted into frictional heat of the brakes and is not used effectively. The problem is that there is no.

Therefore, the present invention aims to reduce the speed when the rider decelerates while riding the bicycle.
The kinetic energy of the bicycle is stored in the mainspring,
The object of the present invention is to provide a driving force storage type bicycle that can effectively utilize this energy when starting, climbing, etc.

(Means for Solving the Problems) In other words, in order to achieve the above object, the present invention has a front wheel and a rear wheel supported by a hub equipped with a small sprocket and rotatably supported by a main shaft. In a bicycle in which the rear wheel is driven by rotating a crank and can be driven by operating a handle, the hub is provided with a clutch portion, and the main shaft is driven by operating a first lever attached to the handlebar. A sprocket with a clutch having a clutch part and a sprocket that slides in the axial direction of the hub and engages with the clutch part of the hub is provided, and a sub-shaft is provided above the main shaft parallel to the main shaft. The countershaft has a hollow shaft which is rotated in the direction of rotation of the hub through a member by the rotation of the clutch-equipped sprocket, and a spring fixing member whose rotation is constantly regulated by a second lever attached to the handle. , a mainspring spring whose center portion is fixed to the hollow shaft and whose outer end is fixed to the spring fixing member and is wound up by the rotation of the hollow shaft; and the spring fixing whose restriction is released by operating a second lever. A driving force storage type bicycle is provided with a rotation transmitting means for transmitting the rotation to the hub when the member is rotated by the mainspring spring to rotate the hub in the forward direction.

(Function) The present invention constituted by the above means is such that when the rider operates the first lever to decelerate while riding or dismounting the bicycle, the clutch-equipped sprocket slides in the axial direction of the main shaft. The clutch portion engages with the clutch portion of the hub.This causes the clutch-equipped sprocket to rotate in the same direction as the hub.

When the clutch-equipped sprocket rotates, the hollow shaft of the subshaft is rotated through a member, and the spiral spring whose center portion is fixed to this hollow shaft is wound up. When the second lever is operated when riding or starting the bicycle, the spring fixing member that restricts the rotation of the mainspring becomes rotatable, and is rotated by the mainspring. When the spring fixing member rotates, this rotation is transmitted to the hub by the rotation transmission means, causing the hub to rotate in the forward direction.

(Example) In order to further clarify the gist of the present invention, one example will be explained using the drawings.

Figure 1 is a side view of the first embodiment, where 1 is a front pipe, 2 is a side view of the first embodiment, and 1 is a front pipe;
is the front fork, 3 is the front wheel, 4 is the handle, and 5 is the lower pipe. 6 is a vertical pipe, and a saddle 7 is attached to the upper part of the vertical pipe so as to be movable up and down. The lower end of the vertical vibrator 5 and the lower end of the lower vibrator 5 are attached to a hanger (not shown) that rotatably supports the shaft (not shown) of a crank 8 having a pedal 8a. The upper end of the rear hawk 9 is attached to the top of the standing vibro.
As shown in FIG. 2, a main shaft 10 is attached to the lower ends of the left and right arms 9a, 9b.

That is, the main shaft 10 has a small diameter portion 10a of a predetermined length on the left arm 9a side, and inner and outer nuts 11. ll
The small diameter portion 10a is fixed to the left arm 9a by tightening the small diameter portion 10a from both sides of the left arm 9a. Also, there is a threaded portion 10b on the right end side of the main shaft 10, and this threaded portion l
The right arm 9b, whose lower end hole is inserted into Ob, has a threaded portion l.
It is fixed to the main shaft 10 by a ring 12 fitted into a groove of the main shaft 10 on the inner side of Ob and a nut 13 screwed into the threaded portion 10b.

A male threaded member 14 having multiple male threads 14a cut on its outer periphery is fixed by a key 15 to a small diameter portion 10a at the left end of the main shaft IO and inside the inner nut 11. and,
Female thread 17a screwed into male thread 14a of male thread member 14
The internally threaded member 16 has an outer cylindrical portion 17 having a thread 17a cut therein, and an inner cylindrical portion 18 having a larger diameter than the outer cylindrical portion 17 and concentric with the outer cylindrical portion 17. , the inner end 18a of the inner cylindrical portion 18 is formed into a chevron shape. A locking tool 19 having a pair of arc-shaped side walls is rotatably fixed to the outer peripheral surface of the outer cylindrical portion 17 of the female screw member 16 (see FIG. 3). The lower end of an actuating wire 70, which will be described later, is fixed to the locking pin 20 fitted on the surface. The female threaded member 16 also has a tension spring 2 on the outer surface of its inner cylindrical portion 18.
The lower end of the tension spring 21 is attached to the left arm 9a, and the upper end of the tension spring 21 is attached to a fixture 22 fixed to the left arm 9a above the main axis IO. Therefore, the female threaded member 16 receiving the biasing force of the tension spring 21 is constantly rotated until the outer surface of its outer cylindrical portion 17 substantially coincides with the outer surface of the male threaded member 14, and the female threaded member 16 is engaged with the female threaded member 16. The stop 19 is in position A in FIG.

The main shaft 10 has a spline portion 23 having a predetermined length spline cut on the outer circumferential surface of the portion continuing from the small diameter portion 10a, and a collar 2 is provided at the inner end (right end) on the outside of the spline portion 23.
A sleeve 24 having a spline 4a and a spline that engages with the spline of the spline portion 23 is slidably inserted in the axial direction of the main shaft 10. A thrust bearing 25 is fitted onto the outer peripheral surface of the sleeve 24, and one end of the thrust bearing 25 is in contact with the collar 24a, and a large number of needles 27a and thrust bearings 27b are connected via the thrust bearing 25 and a spacer 26. A needle thrust bearing 27 is fitted. A needle thrust bearing 27 is provided on the outer periphery of the sleeve 24.
Subsequently, an annular sliding plate 28 having an outer diameter substantially the same as the outer diameter of the inner cylindrical portion 18 of the female threaded member 16 is fitted.

The clutch-equipped sprocket 29 is fitted onto the outer periphery of the needle 27a portion of the needle thrust bearing 27.

The sprocket 29 with a clutch has a sprocket 30 on the outer peripheral surface of its fitting portion, and the sprocket 30
A clutch portion 31 is formed on the right side of 0 and with a predetermined gap from the outer peripheral surface of the thrust bearing 25. Although not shown, the engaging portion of the clutch portion 31 has a large number of teeth with chevron-shaped tips.

The slide plate 28, thrust bearing 25, spacer 26, needle thrust bearing 27, and clutch sprocket 29 are assembled by screwing the nut 32 into the threaded portion cut on the outer end side of the sleeve 24, and attaching the slide plate 28.
It is integrally assembled to the sleeve 24 by pressing in the direction of the collar 24. In this way, the sleeve 24 assembled with a large number of parts is located between its flange 24a and a ring-shaped spring receiver 32a fitted in a groove provided on the outer periphery of the main shaft IO on the right side of the flange 24a. It is constantly pressed in the direction of the male threaded member 14 by a compression spring 33 interposed therein. Therefore, the sliding plate 28 on the left end side of the sleeve 24 is in contact with the tip of the end of the inner cylindrical portion 18 of the female threaded member 16.

The main shaft 10 is further provided with a hub 34 and a lower sprocket 37 to which a rear wheel 36 with a smaller diameter than the front wheel 3 is attached via a number of spokes 35 between the spring bearing 32a and the right arm 9b of the rear fork 9. The rear wheels 36 are spaced apart from each other and are attached via a one-way clutch (not shown) that allows the rear wheels 36 to rotate only in the forward direction. Here, a small sprocket 40 with a chain 39 interposed between it and a large sprocket 38 attached to the shaft of the crank 8 is formed at the end of the hub 34 on the lower sprocket 37 side. A latch portion 41 that can be engaged with the clutch portion 31 is provided at the end opposite to the small sprocket 40.
is formed. This clutch part 41 is connected to the sleeve 24
Since there is a slight gap between the clutch portion 31 and the clutch portion 31 when the clutch portion 31 is moved to the left, the clutch portion 31 is not engaged.

A front end portion of a horizontal fork 42 extending rearward substantially horizontally is fixed to the upper part of the rear fork 9.

Then, the left arm 42a and the right arm 4 of the horizontal hawk 42
At the rear end of 2b, as shown in FIG.
It is attached by.

On the outside of the subshaft 43, there is a hollow shaft 47 supported by two bearings 45, 45 and a bearing 46 on the right side of both bearings 45, which has a one-way clutch built therein, or a hollow shaft 47 with its left end close to the left arm 42a. It is installed as follows. A torque limiter 48 is attached to the outside of the hollow shaft 47 on the left side thereof with a key (not shown). An upper sprocket 49 is attached to the right side of the torque limiter 48 with an appropriate number of bolts (not shown), and a left chain 50 is wound around the upper sprocket 49 and the lower sprocket 30. The hollow shaft 47 further has a central portion 51a of the mainspring spring 51 between the limiter 48 and a bearing support portion 47a on which the right end bearing 46 is fitted.
is fixed.

Then, the mainspring spring 51 of the subshaft 43 and the horizontal fork 42
A spring fixing member 52 is attached between the right arm 42b and the right arm 42b. This spring fixing member 52 is connected to the bearing support portion 47.
a large cylindrical portion 52a whose inner circumferential surface is fitted with a bearing 55 attached to the outer circumferential surface of a, and a small cylindrical portion 5 which is attached to the subshaft 43 via the bearing 55 and has a smaller diameter than the large cylindrical portion 52a.
2b. In addition, one end 53a of a spring coupling plate 53 is fixed to the left end of the outer peripheral surface of the large cylindrical portion 52a of the spring fixing member 52, and the other end 53b of the spring coupling plate 53 is attached to the outer end 51b of the mainspring spring 51. It is fixed. Furthermore, the spring fixing member 52 has its small cylinder 52b.
An upper sprocket 54 is formed at the right end with a predetermined gap between it and the right arm 42b of the horizontal fork 42. A right chain 57 is wound around the upper sprocket 54 and the lower sprocket 37 of the main shaft 10. It is being

A brake plate 58 disposed between the upper sprocket 54 and the right arm 42b is connected to the small cylindrical portion 52 of the spring fixing member 52.
It has a cylindrical portion 58a having an outer diameter that is approximately the same as the outer diameter of the cylindrical portion 58a, and an annular attachment portion 58b formed in the radial direction at the end of the cylindrical portion 58a on the upper sprocket 54 side is attached to the side surface of the upper sprocket 54. It is attached. Further, the side of the cylinder portion 58a of the brake plate 58 opposite to the mounting portion 58b has an outer diameter larger than the outer diameter of the upper sprocket 54, and the right arm 42 has an outer diameter larger than the outer diameter of the upper sprocket 54.
A disk portion 58c is formed substantially parallel to b.

The right arm 42b is provided with a set screw 59 which passes through the right arm 42b and whose tip can come into contact with the side surface near the outer periphery of the disk portion 58c of the brake plate 58. It is fixed to the right arm 42b by a nut 60 screwed into the head. A fixing lever 61 of the brake plate 58 is movably attached via a pin 63 to a support 62 fixed to the inner surface of the right arm 42b on the opposite side of the subshaft 43 with respect to the set screw 59.

The fixing lever 61 has a head 61a facing the set screw 59, and a tail 61 extending from the pin 63 in the opposite direction to the head 61a.
b, and a release wire 6 is provided at the end of the tail portion 61b.
One end of 4 is fixed.

Then, on the outside of the end of this release wire 64, the tail portion 61b
A compression spring 65 is interposed between the right arm 42b and the fixing lever 61 whose tail portion 61b is pushed up by the compression spring 65.
The disk portion 58c of is crimped onto the set screw 59.

The handle 4 shown in FIG. 5 has a brake lever 66 for the rear wheel 36 on the left end side, as in the conventional case, and a brake lever 67 for the front wheel 3 on the right end side. An operating lever 68 is provided on the handle 4 adjacent to the left brake lever 66.
However, a release lever 69 is also attached close to the right brake lever 67, respectively. The actuating lever 68 is attached with the other end of an actuating wire 70, one end of which is fixed to the locking pin 20 that is locked to the pair of locking tools 19 described above. The other end of release wire 64 is attached.

Next, the operation of this embodiment will be explained. While the bicycle is running, when the rider wishes to decelerate, he operates the operating lever 68 of the handlebar 4 and pulls the operating wire 70.
The locking tool 19, which was at the A position in FIG. 3, is pulled up to the B position against the biasing force of the tension spring 21. For this reason, the female screw member 16 to which the locking tool 19 is attached is rotated by 60' to 90 degrees. As the female threaded member 16 screwed into the male threaded member 14 fixed to the main shaft lO rotates, the female threaded member 16 moves to the right in FIG. 2 and presses the slide plate 28 with its tip. When the sliding plate 28 is pushed, the sleeve 24 integrated with the sliding plate 28 moves in the same direction against the biasing force of the compression spring 33. As the sleeve 24 moves, the clutch sprocket 29 also moves in the same direction, and its clutch portion 31 engages with the clutch portion 41 of the hub 34.

On the other hand, since the rear wheel 36 is rotating while the bicycle is running, the eights 34 are rotated in the same direction as the rear wheel 36 via the spokes 35. Therefore, the clutch sprocket 29 also rotates in the same direction as the hub 34, and the sprocket 30 operates the left chain 50. Here, when the clutch sprocket 29 moves in the direction of the wheel 34, the sprocket 30 moves several millimeters from the position shown by the solid line to the position shown by the two-dot chain line.
There is no adverse effect on the drive system due to misalignment.

When the left chain 50 operates as described above, the limiter 4
An upper sprocket 49 attached to the hub 34 rotates in the same direction as the hub 34. Since the hollow shaft 47 is rotated by the rotation of the limiter 48, the mainspring spring 51 having the center portion 51a fixed to the hollow shaft 47 is wound up. When this state continues and the mainspring spring 51 is fully wound, the limiter 48 is activated to generate a slip inside and protect the mainspring spring 51 from breaking. When the limiter 48 protects the mainspring spring 51, it notifies the driver of this information via an indicator (not shown) attached to the steering wheel 4, so the driver can release the operating lever 68 and operate it. cancel. When the driver releases the operating lever 68, the locking device 19 releases the tension spring 21.
As a result, the female threaded member 16 also returns to its original position, and the sleeve 24 pressed by the compression spring 33 also returns to its original position. As a result, the clutch portion 31 of the sprocket with clutch 29 and the clutch portion 4 of the hub 34
1 is disengaged, the force driving the clutch sprocket 29 is lost, and its rotation stops, as well as the rotation of the upper sprocket 49.

In this way, when the upper sprocket 49, limiter 48, and hollow shaft 47 stop rotating, the hollow shaft 47 is reversed by the return force of the mainspring spring 51.
A one-way clutch in the bearing 46 stops its rotation.

As described above, when the driver pulls the release lever 69 toward him when starting the bicycle with the mainspring spring 51 fully wound or when riding the bicycle, the release wire 64
The top of the is pulled up.

Therefore, the lower end of the release wire 64 resists the biasing force of the compression spring 65 and moves the tail portion 61b of the fixed lever 61 to the right arm 42.
By pulling in direction b, the head 61a is separated from the brake plate 58, so the brake plate 58 becomes rotatable. Therefore, the spring fixing member 52 whose movement was restricted by the brake plate 58 becomes rotatable, and is rotated by the return force of the mainspring spring 51. In this case, since the center portion 51a of the mainspring spring 51 is fixed, its outer end 5
1b rotates in the loosening direction, causing the upper sprocket 54 of the spring fixing member 52 to rotate in the same direction as the upper sprocket 49 of the limiter 48. The rotation of the upper sprocket 54 causes the lower sprocket 37 to rotate in the same direction as the upper sprocket 54 via the right chain 57, and the main shaft 10
rotates in the same direction, generating a forward driving force for the bicycle. Therefore, when starting or climbing a bicycle, there is no need to press the pedals with as much force as in the past, and especially when riding a bicycle, it is sufficient to press the pedals with the same force as when riding on a flat road.

Next, a second embodiment will be explained with reference to FIG.

The main spring 51 etc. are disposed between the lower pipe 5 and the vertical vibro, and are rotatably supported by the lower sprocket 37 attached to the main shaft 10 and the sub-shaft 43 to operate the main spring 51 etc. between the upper sprocket 54 and the
A right chain 57 is attached.

Also, a small sprocket 40 is provided on the hub 34 of the rear wheel rotatably supported on the main shaft IO, and a large sprocket 38 is attached to the shaft of the crank 8 having the pedal 8a.
A chain 39 is interposed between the pedal 8a and the pedal 8a.
By rotating the crank 8, the rear wheel 36
can be rotated.

In this embodiment, the front wheel 3 and the rear wheel 36 have the same diameter, and the other parts are the same as in the first embodiment, so a description thereof will be omitted.

FIG. 7 shows a third embodiment, in which the mainspring spring 51 and the like are arranged in front of the front pipe 1, and
As shown in FIG. 2, the main shaft lO is fixed, and the lower sprocket 37 is attached to it.
A right chain 57 is connected between the upper sprocket 54 and the upper sprocket 54 which is rotatably disposed on the countershaft 43 that supports the mainspring spring 51 and the like.
By rotating the pedal 8 in the forward direction, the front wheel 3 also rotates as the rear wheel 36 rotates in the forward direction via the chain 39, and the mainspring spring 51 etc. are activated as in each of the above embodiments. It's about to work.

In addition, in the third embodiment, a chain is not mounted on the small sprocket 40.

Moreover, since the other parts are the same as those of each embodiment, their description will be omitted.

Further, the chain of this embodiment may be a belt having teeth on the inner circumferential surface, etc., as determined arbitrarily within the scope of achieving the above-mentioned object of the present invention and the effects described below. It goes without saying that none of these changes alter the gist of the invention.

(Effects of the Invention) As described above in detail, the present invention allows the bicycle to be hoisted up and slowed down by operating the first lever attached to the handle when the bicycle needs to decelerate while running. A mainspring is installed that stores energy and acts as a brake, and when it is necessary to climb a hill or accelerate, the second lever attached to the handle is operated to loosen the wound mainspring, and the power is used to drive the wheels. Since I decided to use it as a bicycle, when I try to climb a bicycle or accelerate, when I operate the second lever, the rear wheel is driven by the loosening force of the mainspring.

Therefore, when riding a bicycle or accelerating, the rider only has to press the pedals to the same degree as when riding on a flat road, making it easier to ride and accelerate than on a conventionally used bicycle. It is much easier to ride the bicycle than with a conventional bicycle with a derailleur.

[Brief explanation of drawings]

The drawings show an embodiment of the driving force accumulating bicycle of the present invention. Fig. 1 is a side view, and Fig. 2 is an enlarged cross-sectional view of the hub attached to the main shaft supporting the rear wheel shown in Fig. 1. Figure 3 is an explanatory diagram of the function of the female screw member in Figure 2, Figure 4 is an enlarged cross-sectional view of the members attached to the countershaft in Figure 1 (however, the cross section of the limiter is not shown), The figure is an enlarged plan view of the handle of FIG. 1. 4--Handle 10-11 Main shaft 14-11 Male thread member 16--Female thread member 24-11 Sleeve 29-m-Sprocket with clutch 30-1-Sprocket 31-m- Clutch section 34-11 Hub 36--Rear wheel 37--Lower sprocket 38-11 Large sprocket 39--Chain 40-11 Small subrocket 41-m-Clutch section 43-11 Sub-shaft 47---Hollow shaft 50-11 Left chain 51-11 Mainspring spring 51a-1 Center part 51b-1 Outer end 52-1-Spring fixing member 54-11 Upper sprocket 57--- Right chain 68-m-actuation lever (first lever) 69-m-release lever (second lever).

Claims (1)

[Claims] It consists of a front wheel and a rear wheel that are supported by a hub equipped with a small sprocket and rotatably pivoted to the main shaft.The rear wheels are driven by rotating the crank, and the vehicle can be driven by operating the steering wheel. In the bicycle, the hub is provided with a clutch part, and the clutch part and sprocket are slid in the axial direction of the main shaft and engaged with the clutch part of the hub by operating a first lever attached to the handlebar on the main shaft. A sprocket with a clutch is provided, and
A sub-shaft is provided above the main axis and is arranged parallel to the main axis,
This countershaft includes a hollow shaft that is rotated in the rotational direction of the hub via a wrapping member by the rotation of the clutch-equipped sprocket, and a spring fixing member whose rotation is constantly regulated by a second lever attached to the handle. , a mainspring spring whose center portion is fixed to the hollow shaft and whose outer end is fixed to the spring fixing member and is wound up by the rotation of the hollow shaft; and the spring fixing whose restriction is released by operating a second lever. A driving force storage type bicycle, characterized in that it is provided with rotation transmitting means for transmitting the rotation to a hub when the member is rotated by a mainspring spring to rotate the hub in the forward direction.