JP7016203B2 - A device that regenerates the inertial force of the vehicle when braking as auxiliary power for the next start. - Google Patents

Description

The present invention stores energy by entraining spring members such as torsion coil springs and spiral springs in a rotation direction opposite to the direction according to the rotation of the drive shaft during braking in conjunction with the drive shaft and brake of the vehicle. The present invention relates to a device that serves as auxiliary power by returning the return torque of the spring to the drive shaft as it is at the next start or release of the brake.

Everyone thinks of the idea of involving a mainspring spring or the like with the inertial force when braking the vehicle and using this as auxiliary power at the next start. However, when the spring that is a member that generates auxiliary power is given an angular displacement by following the rotation of the drive shaft and the torque when the member naturally returns is returned to the drive shaft as an auxiliary force, the rotation direction is not reversed and the spring is not returned. However, it must be configured so that this switching operation can be performed without disconnecting the drive shaft even momentarily.

In order to reverse the rotation direction, the idle gear may be engaged, but the connection between the drive shaft and the spring member is inevitably broken at the time of the switching operation, so that the spring member idles instantly and the torque disappears. In other words, it is necessary to change the direction of rotation without disconnecting the mechanical connection.

In the present invention, one of a pair of bevel gears facing each other on the same axis is interlocked with a drive shaft, and a spring member which is a source of auxiliary power is fixed to the other to engage both bevel gears with a one-way clutch. The problem is solved by interlocking the ring-shaped carrier that freely supports the rotation and revolution of the planetary bevel gear that meshes with both bevel gears with the brake, and when the rotation of the carrier is stopped by the brake, the spring member is The fixed bevel gear is rotated by the planetary bevel gear in the direction opposite to the rotation of the bevel gear on the drive shaft side to give an angular displacement to the spring member. At this time, the two bevel gears are set up in a relationship of idling with each other by a one-way clutch. When the carrier is freed to rotate by releasing the brake, the spring member is also free to return, and the bevel gear to which the member is fixed transmits rotation to the bevel gear on the opposite drive shaft side in the same direction as it was rotating during braking. However, the one-way clutch that connects the two bevel gears at this time is in the driven state, so that both the bead gears, the planetary bead gears, and the carrier rotate in the same direction as one, and the return torque of the spring member remains the same. It will be returned to the drive shaft as an auxiliary force in the forward direction of the vehicle.

As a result, when the brake is applied due to a temporary stop or the like, the spring member is caught, and when the brake is released, the returning force of the caught spring is returned to the drive shaft as it is as a force in the forward direction. Although it works as an auxiliary force for several revolutions of the drive wheels, the effect is sufficient when considering energy saving of the vehicle that requires more energy at the time of starting, and it also contributes to the reduction of exhaust gas. I think.

In addition, it is considered that in a bicycle, the speed increases by the amount of the assisting force, so that the wobbling caused by the insufficient speed at the time of starting is reduced, the stability is increased, and the safety is increased accordingly.

It is sectional drawing of one embodiment for carrying out this invention in an automobile. It is a partially enlarged view in FIG. FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is sectional drawing of one embodiment for carrying out this invention in a bicycle. It is a partially enlarged view in FIG. FIG. 5 is a cross-sectional view taken along the line BB in FIG. It is sectional drawing of one form for carrying out this invention in a bicycle, and the spring member is a spiral spring. FIG. 7 is a cross-sectional view taken along the line CC in FIG. FIG. 7 is a sectional view taken along line DD in FIG. 7.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an embodiment of an automobile, and is incorporated inside a speed reducer case 18 in which a shaft does not swing even if the road surface is uneven, except for a spring member and a brake portion. The drive side bevel gear 4 is directly connected to the drive shaft 1 via the gear 3 and the drive shaft gear 2, and the spring side bevel gear 5 facing the bevel gear 4 is spirally wound with a torsion coil spring 14 having a rectangular cross section. Is fixed, and is incorporated via a support shaft 6 fixed to the drive side bevel gear 4 and a one-way clutch 7. A planetary bevel gear 8 that is sandwiched between the two bevel gears 4 and 5 and is rotatable around a support shaft 6 is incorporated with a shaft center 10 and a collar 11 that presses the axis 10. Moreover, the ring-shaped gear 12 is fixed and meshes with the gear 31 connected to the brake drum 13. A boss 15 and a slide boss 16 are fixed to both ends of the torsion coil spring 14, one of which is screwed to the spring side bevel gear 5, and the other end of the slide boss 16 increases the number of turns when the spring 14 is wound. In consideration of the accompanying change in free length, the spring cover 17 is fitted with the spring cover 17 in a shape that stops rotation while allowing slipping in the thrust direction. As for the brake portion, the brake drum 13 is illustrated as an example, and the details are omitted.

The operation will be described below with the line-of-sight direction that determines the rotation direction as the arrow X. Assuming that the rotation direction of the drive shaft 1 when the automobile moves forward is the arrow CW41, the rotation direction of the drive side cap gear 4 and the support shaft 6 is the arrow CCW 42 by the gear 3, and is press-fitted into the spring side cap gear 5 at this time. The one-way clutch 7 and the support shaft 6 to be fixed are assembled so as to idle. In the non-brake state, the spring-side bevel gear 5 is stopped by the torsion coil spring 14, so that the carrier 9 is also rotated in the direction of the arrow CCW42, although deceleration is performed. Next, when the brake is applied and the rotation of the carrier 9 is stopped, the spring-side bevel gear 5 is rotated in the direction of the arrow CW43 by the planetary bevel gear 8 to wind the torsion coil spring 14. The winding direction of the spring 14 is taken to the right so that the spring 14 and the boss 15 are more tightly tightened with respect to the winding direction. As a matter of course, the one-way clutch 7 at this time is in an idling state.

When the brake is released, the return force of the torsion coil spring 14 causes the spring side bevel gear 5 to be rotated in the direction of the arrow CCW44, and the one-way clutch 7 with respect to the input in the direction 44 from the spring side bevel gear 5 is affected by its wedge action. In the drive state, both the drive side bevel gear 4 and the carrier 9 rotate in the same direction, and the arrow CW41, that is, the rotational force in the forward direction is applied to the drive shaft 1.

FIG. 4 is an embodiment of the present invention on a bicycle, in which a carrier 9 to which a collar 11 is fixed acts as a brake drum and is directly interlocked with a brake, and the drive side bevel gear 4 is a gear 3 and a hub gear. The spring-side bevel gear 5, which is directly connected to the hub 20 via the 22 and has the one-way clutch 7 press-fitted and fixed, fits with the support shaft 6 fixed to the drive-side bevel gear 4. The band 26 arranged on the outer periphery of the collar 11 and to which the friction material 25 is fixed is connected to the brake rope 27 via the tension coil spring 29. The strength of the spring 29 prevents the torsion coil spring 28 from being caught in excess of the maximum allowable stress, and when the stress is exceeded, the force relationship between the carrier 9 and the friction material 25 is set.

FIG. 7 is an embodiment for a bicycle, and is an example in which a non-contact type spiral spring 30 is used as a spring member.

1 Drive shaft 2 Drive shaft gear 3 Gear 4 Drive side cap gear 5 Spring side cap gear 6 Support shaft 7 One-way clutch 8 Planet cap gear 9 Carrier 10 Axis center 11 Color 12 Ring-shaped gear 13 Brake drum 14 Torsional coil spring 15 Boss 16 Slide Boss 17 Spring Cover 18 Reducer Case 19 Bearing 20 Hub 21 Spoke 22 Hub Gear 23 Hub Shaft 24 Frame 25 Friction Material 26 Band 27 Brake Rope 28 Twist Coil Spring 29 Tension Coil Spring 30 Swirl Spring 31 Gear 32 Parallel Key 33 Key Groove 34 Stop ring 35 Dustproof boss

Claims (1)

One of the pair of bevel gears facing each other on the support shaft (6) is interlocked with the drive shaft or wheel of the vehicle as the drive side bevel gear (4), and the other is given an angular displacement and returns when the angular displacement returns. A one-way clutch (7) that fixes a spring member whose auxiliary power is generated by torque to form a spring-side bevel gear (5) and controls the relative drive and idling between both bean gears (4.5). ), And a carrier (9) that can rotate around the support shaft (6) while freely supporting the rotation of the planetary gear (8) that meshes with both gears (4.5). A device that regenerates the inertial force of the vehicle when braking, which is linked to the braking device, as auxiliary power for the next start.

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