JPS5857351B2 - Electric transmission for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a transmission device for a vehicle such as a bicycle, and relates to an improvement in a transmission device for a vehicle such as a bicycle. The reliability of the device is increased and the power source is increased by using different power sources in response to the difference in load when switching from low gear to low gear and from low gear to top gear, that is, when the motor rotates forward and backward. It is designed to last a long time.

Conventionally, the switching means of this type of transmission device has generally been a manual type.

That is, the chain is switched from top gear to low gear by pulling or loosening a flexible wire by operating a change lever attached to a suitable location on a vehicle such as a bicycle, thereby moving the guide gear forward or backward.

However, this type of device directly pulls the flexible wire using the change lever, which requires a large force of 5 to 6 Ky. Therefore, when riding a bicycle, it is difficult to remove one hand from the bundle and apply a large force while riding. This was dangerous for traffic safety, as the vehicle broke down and swayed, leading to a fall.

In view of these points, the present invention provides a transmission device that can change the chain from top gear to low gear with a simple operation of switching an electric switch, and is further used exclusively for forward and reverse rotation of the motor of the device. The device is equipped with a pair of batteries.

An embodiment of the bicycle will be described below with reference to the drawings.

The transmission device of the present invention includes a drive gear port linked to a transmission mechanism, a transmission mechanism for transmitting the driving force of the drive gear port to the rear wheels;
The transmission mechanism is attached to the support rod of the carrier of the vehicle;
The control box is attached to a location close to the handle of the bundle, and is comprised of an operating section and the like that control the control box.

Next, each part will be explained in detail.

First, to explain the transmission mechanism 2, A is a plurality of change gears that are pivoted on the wheels leading to the rear wheels, and the outer diameter increases from the outside to the inside.

From now on, the innermost change gear will be referred to as the first gear A1, and the gears will move outward in order: second gear A2, third gear A3, and so on.
...It is called the 5th gear A5.

B is a kite gear device consisting of a pair of gears b/, b.
It is pivoted on a support plate fixed to the vehicle so that it can swing in the longitudinal direction of the vehicle, and is also able to move forward and backward between the first gear All and the fifth gear A5. V and b'' are opposed to and biased in the opposite direction to the fifth gear A5.

E is an endless chain installed between the drive gear port, the change gear A, and the guide gear device 8 to transmit the foot pedal force applied to the pedal as rotational force to the rear wheels.

Next, we will explain about the control box.

The control box includes a first storage chamber E for storing a battery case, a second storage chamber E for storing a battery case, and a control room F for a changeover switch.

G is a reduction gear device housed in the control room F, which consists of a plurality of gear groups, the first stage gear G1 meshes with the pinion group of the DC motor M, and the final stage gear G4 is connected to a flexible wire H.
The proximal end of the flexible wire H is attached to the
A drum J is attached to wind the material.

The tip of the flexible wire H is attached to the guide gear device B, and the wire H is wound around or unwound around the drum J by the rotation of the final stage gear G4, so that the wire H is pulled and moves forward and backward through the guide gear device B. , a pair of gears 1. /, b// are opposed to one of the change gears A, and the chain O is engaged with that gear A to change speed.

S is a control switch that rotates together with the drum J and stops power supply to the motor M after the drum J has rotated a predetermined amount;
In the circuit shown in FIG. 7, the control switch S is arranged concentrically with a pair of rotating electrodes Sa and Sb arranged in a donut shape and the pair of rotating electrodes 5asb, and the protruding portion Sc is arranged concentrically with the pair of rotating electrodes Sa and Sb arranged in a donut shape. A donut-shaped stop electrode Sd is disposed opposite to one C1 of a pair of gaps C1 and C2 formed between the rotating electrodes Sa and Sb, and a donut-shaped stop electrode Sd is disposed at the periphery of the rotating electrodes Sa and Sb, and the rotating electrodes Sa, Sb and the stop electrode A contact point T1. T
2... T5, a first power supply terminal TA provided on the symmetrical side via the rotating electrodes Sa and Sb at the contact Tl of the first stage, and a rotating electrode Sa at the contact T5 of the fifth stage, a second power supply terminal TB provided on the symmetrical side via Sb, and the other gap C26 between the pair of rotating electrodes Sa and Sb;
1. It is provided on the symmetrical side of the protrusion Sc of the stop contact Sd.

Further, the fixed electrode group T has a contact point T1 for each stage gear of the change gear A. T2 . T3...
... is in contact with either of the pair of rotating electrodes Sa, Sb, and the contact point T1. T2...
・A pair of rotating electrodes Sa, Sb and a stop electrode Sd through
The first power supply terminal TA is connected to the rotating electrode Sa, and the second power supply terminal TB is connected to the rotating electrode Sa so that there is no electrical conduction with the protruding portion Sc of Each of the electrodes is configured to be in constant contact with the electrode sb.

t is a stop contact that short-circuits the stop electrode Sd and the motor M, and is in contact with the always-stop type 1fsd.

Next, the operation section for controlling the control box will be explained.

There is a manual switch SW for change gear selection inside the operation part.
is installed, and the change gear selection manual switch SW is connected to each contact T of the fixed electrode group T of the control switch S.
1. T2...ζEach fixed contact N that continues
1. A rotary set of switches consisting of N2... and a movable contact Q which is attached to the operating shaft P to which the operating knob is attached and which selectively switches to one of the fixed contacts. By rotating the operating knob, the fixed contact N1. N2...
This means switching between the two.

An example of an electric circuit diagram according to an embodiment of the present invention is shown in FIG. It has fixed contacts N1, . . . N5 and a movable contact Q.

Further, the changeover switch is a 4-circuit, 3-contact rotary switch consisting of movable contacts X1... When power is being supplied to the first power supply terminal TA, the battery supplies power to the second power supply terminal TB, and when the battery is supplying power to the first power supply terminal TA, the battery supplies power to the second power supply terminal TB. Power supply terminal T
It is configured to manually switch to supply power to B.

Next, a description will be given of the operating means according to the present invention in a normal state, that is, when there is sufficient power in the battery and the battery.

If you want to change to the fourth gear A4 in the circuit diagram shown in Figure 7 where the chain O is installed in the third gear A3 of the change gear A, you can change it by rotating the operation knob on the operating section G to the fourth gear. The movable contact Q of the gear selection manual switch SW contacts the fourth stage fixed contact N4.

Then, the acid oil electrode → Movable contact X3 on the changeover switch →
Fixed contact ¥3 → Mork M → Movable contact Q of manual switch SW → Fixed contact N4 → Contact T4 → Rotating hair pole Sa → 1st
Current flows from the power supply terminal TA to the fixed contact of the changeover switch ¥4 to the movable contact X4 to one pole of the battery, and the battery is not used.

Therefore, the motor M rotates so as to rotate the control switch S counterclockwise, and when the protrusion Sc of the stop electrode Sd reaches the position where it contacts the contact T4, no current flows through the motor M via the rotating electrode Sa. In addition, since the circuit is configured as follows: motor M → stop contact t → stop electrode Sd → contact T4 → fourth fixed contact N4 of manual switch SW → motor M, even if DC motor M tries to continue rotating due to inertia, the circuit will not stop. The motor M performs dynamic braking, so the motor M is immediately stopped at a predetermined position.

On the other hand, the rotation of the motor M causes the reduction gear device G to rotate and extend the flexible wire H.

Therefore, the kite gear device B moves backward by the tensile force of the springle, and moves the pair of gears b/, b〃 from the third gear A3 position to the fourth gear A4 position.

Then, as mentioned above, when the motor M is stopped, the pair of gears b/ and b'' are stopped at the fourth gear A4 position, and the installation of the chain O is changed from the third gear to the fourth gear, and the gear ratio is changed. It is possible to take a step back.

Next, if you want to change to the second gear A2 of the change gear A, rotate the operating knob to the second gear.

Then, the movable contact Q of the change gear selection manual switch SW comes into contact with the second stage fixed contact N2.

Therefore, the electrode of the battery → the movable contact X1 of the changeover switch →
Fixed contact ¥1 → 2nd power supply terminal TB → Rotating electrode sb
→ Contact T2 → Fixed contact N2 of manual switch SW → Movable contact Q → Motor M → Fixed contact of changeover switch ￥2 → Movable contact X2 → Current flows with one pole of the battery, and the battery is not used .

Therefore, the motor M is applied with a voltage in the opposite direction to that described above and rotates so as to rotate the control switch S clockwise. When the protrusion SC of the stop electrode Sd comes into contact with the contact T2, the motor M Current from sb stops flowing, and motor M has stop contacts t and stop contact t, as described above.
Since a motor short circuit consisting of the electrode Sd, contact T2, etc. is configured, the motor M is immediately stopped by dynamic braking, and the winding drum J and kite gear device B are stopped at a position other than the predetermined position due to the rotation due to the inertia of the motor M. There's nothing to do.

Here, since the reduction gear device G is rotating in the opposite direction from the previous rotation, the flexible wire H is wound onto the drum J.

Therefore, the guide gear device B moves from the fourth gear A4 position and stops at the second gear A2 position.

Next, a description will be given of the operation means used in the case of an abnormality according to the present invention, that is, when the battery used exclusively when the flexible wire H is wound onto the drum J is exhausted.

In other words, this is because a battery used exclusively when winding the flexible wire H onto the drum J requires more power than a battery used exclusively when stretching the flexible wire H, so the latter is more powerful than the former. It wears out faster than.

In this case, the changeover switch K is set in advance to the movable contact X1...
...Switch so that A4 contacts fixed contact Zl...A4.

In this way, the pair of batteries used exclusively for winding or extending the flexible wire H onto the drum J can be replaced.

In this case, if you want to change to the fourth gear A4 in the circuit diagram shown in Figure 7 in which the chain O is installed at the third gear A3 of the change gear A, turn the operating knob of the operating section G to 4.
When the stage 1 rotates, the movable contact Q of the change gear selection manual switch SW comes into contact with the fixed contact N4 of the fourth stage.

Then, the electrode of the battery → the movable contact X of the changeover switch, →
Fixed contact Z1 → Motor M → Movable contact Q of manual switch SW → Fixed contact N4 → Contact T4 → Rotating electrode Sa → First
Current flows from the power supply terminal TA to the fixed contact Z2 of the changeover switch to the movable contact X2 to the one pole of the battery, and the battery is not used.

Therefore, the motor M rotates so as to rotate the control switch S counterclockwise, and the protrusion Sc of the stop electrode Sd contacts the contact T4.
When the motor M reaches the position where it contacts the rotary type %Sa, no current flows through the motor M via the rotary type %Sa, and since the power generation control circuit is configured as described above, the motor M is immediately stopped at the predetermined position.

On the other hand, the rotation of the motor M causes the reduction gear device G to rotate and extend the flexible wire H.

Therefore, the guide gear device B moves backward due to the tensile force of the springle, and moves the pair of gears b/, b'' to the third gear A3.
Since the gear is moved from the position to the fourth gear A4 position and stopped, the installation of the chain O can be changed from the third gear to the fourth gear, and the gear ratio can be lowered.

Next, if you want to change to the second gear A2 of the change gear A, rotate the operating knob to the second gear.

Then, the movable contact Q of the change gear selection manual switch SW comes into contact with the second stage fixed contact N2.

Then, the electrode of the battery → the movable contact X3 of the changeover switch →
Fixed contact Z3 → second power supply terminal TB → rotating electrode sb
→ Contact T2 → Fixed contact N2 of manual switch SW → Movable contact Q → Mork M → Fixed contact Z4 of changeover switch → Movable contact X4 → One pole of the battery, and the current flows, and the battery is not used. .

Therefore, a voltage in the opposite direction to that described above is applied to the motor M, and the motor M rotates to rotate the control switch S clockwise. The current from the electrode sb stops flowing, and the motor M immediately stops due to dynamic braking as described above, and the winding drum J and the guide gear device B do not stop at a position other than the predetermined position due to the rotation due to the inertia of the motor M. do not have.

Here, since the reduction gear device G is rotating in the opposite direction from the previous rotation, the flexible wire H is wound onto the drum J.

Therefore, the guide gear device B moves from the fourth gear A4 position and stops at the second gear A2 position.

In order to achieve the object of claim 2 of the present invention, an embodiment other than the embodiment shown in FIG. 7 may be used, for example, an embodiment shown in FIG. 8 may be used.

In this case, the changeover switch L connects the other battery (for example, U) in series when one battery (for example, Su) is exhausted, and therefore connects the flexible wire H to the drum J.
The motor M can be driven even when the load is heavy, such as when hoisting.

Furthermore, in order to achieve the object of claim 1 of the present invention, a switch for switching between a pair of batteries may be omitted, as shown in the circuit diagram shown in FIG. By manually replacing the batteries, the same effect as in the embodiment shown in FIG. 7 can be obtained.

As described above, the present invention provides a multi-stage change gear installed on a wheel, a movable kite gear device that is placed opposite to one of the change gears and selectively engages a chain, and a guide gear device that is installed on one of the change gears. A flexible wire for moving the flexible wire, a rotatable drum around which the flexible wire is wound, a motor capable of forward and reverse rotation for rotating the drum, and a motor having the same number of contact points as the number of stages of the change gear, and a motor for controlling the desired stage of the guide gear device. It consists of a manual switch for selecting a change gear located opposite to the change gear, a control switch for stopping rotation of the motor corresponding to the manual switch for selecting the change gear, and a dedicated power source for rotating the motor forward and reverse. Moreover, in the dedicated power supply for rotating the motor forward and reverse, a power supply changeover switch is provided to use the other power supply when one power supply is exhausted, so that the change gear can be rotated from the top gear to the low gear. When switching from low gear to top gear, that is, when the motor rotates forward and backward, the power source can be used differently depending on the load. It can be used by switching between a pair of batteries that are used exclusively.

Therefore, the reliability is extremely high, the power supply can last a long time, and even if one power supply runs out during operation, the other power supply can be used. It is not necessary, so there is no risk of vehicles, especially bicycles, being swayed or falling over.

This makes it possible to provide an electric transmission for vehicles that is extremely beneficial in terms of traffic safety.

[Brief explanation of the drawing]

Figures: Each figure is a diagram illustrating an embodiment of the electric transmission of the present invention on a bicycle. Figure 1 is an overall view of the electric transmission installed on the bicycle, Figure 2 is a perspective view of the operating section, and Figure 3 is an internal view of the control box. , Fig. 4 is a plan view of the reduction gear device, Fig. 5 is a perspective view of the transmission mechanism, and Fig. 6 is an operational diagram of the transmission mechanism.
The figure shows the gear being shifted to the first gear, and the figure shows the figure being shifted to the first gear. FIG. 7, FIG. 8, and FIG. 9 are electrical circuit diagrams showing embodiments of the present invention. G...Control hook, G...Operation section, A
...Change gear, nah...battery,
B... Kite gear device, O... Chain, M... Motor, H... Flexible wire, J... Drum, S... ... Control switch, SW ... Manual switch for changing gear selection, K, L ... Changeover switch.

Claims (1)

[Scope of Claims] 1. A multi-stage change gear installed in a vehicle, a movable guide gear device that selectively engages a chain while facing any of the change gears, and the guide gear device as a change gear. a flexible wire that moves
A rotatable drum around which the flexible wire is wound, a motor capable of forward and reverse rotation for rotating the drum, and a motor having the same number of contacts as the number of stages of the change gear, and the guide gear device is opposed to the change gear of a desired stage. An electric transmission for a vehicle, comprising a manual switch for selecting a change gear, a control switch that stops rotation of a motor in response to the manual switch for selecting a change gear, and a dedicated power source for rotating the motor in forward and reverse directions. 2. The electric transmission device for a vehicle according to claim 1, which comprises a dedicated power source for rotating the motor in forward and reverse directions, and is provided with a power source changeover switch that uses the other power source when one power source is exhausted.