JPS5857349B2 - 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 uses the rotation of a motor to change the engagement of a chain with a change gear to change gears. The present invention is characterized in that a polarity switch for changing the polarity of the voltage applied to the motor and a manual switch for selecting a change gear are provided in conjunction with each other.

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

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

However, this type of device requires a large force of 5 to 6 kg because the flexible wire is directly pulled by the change lever, so when riding a bicycle, it is necessary to remove one hand from the bundle while riding the bicycle and apply a large force. This was dangerous for traffic safety, causing the driver to lose his balance, cause him to sway, and even 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.

An example of a bicycle will be described below based on the drawings.

The transmission device of the present invention includes a drive gear port linked to a pedal gear, a transmission mechanism 2 that transmits the driving force of the drive gear port to the rear wheels, and a control that is attached to a support rod of a carrier of the vehicle body and operates the transmission mechanism 2. It is attached to the box near the handle of the bundle and consists of an operating section and the like for controlling the control box.

Next, each part will be explained in detail.

First, to explain the transmission mechanism 2, A is a multi-stage change gear mounted on the axle of the rear wheel C, and the outer diameter increases from the outside to the inside (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 pair of gears b/. A guide gear device consisting of
The support plate fixed to the axle is pivoted so that the vehicle body can swing in the front and back direction, and is also movable between the first gear A1 and the fifth gear A5. Gears b' and b'' are biased in a direction facing the fifth gear A5.

The endless chain installed between the drive gear port, the change gear A, and the guide gear device 8 transmits the foot pedal force applied to the rear wheel as rotational force to the rear wheels.

Next (this control box will be explained).

A battery storage chamber E and a control room F are constructed inside the control box.

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 M' of the Ma motor M, and the final stage gear G4 (this is the base of the flexible wire H). A winding drum J to which the wire H is wound and whose end is secured is added.

The tip of the flexible wire H is attached to the kite gear device B1, and by the rotation of the final stage gear G4, the wire H is wound around the winding drum Jl or rewound. A pair of gears b' and b'' are opposed to one of the change gears A, and a chain o is engaged with that gear A to change speed.

S is a change-over switch for rotating the motor M a predetermined number of times in order to move the guide gear device B forward and backward to install the chain O on a suitable change gear, and includes a partially cutout donut-shaped rotating electrode Sa and the rotating electrode. Concentric circles (
The rotary electrode Sa is provided with a projection sb in the notch.
a donut-shaped stop electrode Sc provided insulated from the rotating electrode Sa, and a rotating electrode and a stop electrode Sc disposed around the periphery of the rotating electrode Sa.
and a fixed electrode group T which is in contact with the protrusion sb of the electrode.

The rotating electrode Sa and the stop electrode Sc are connected to a reduction gear device G.
A rotating drum U is superimposed on the final stage gear G4 and is rotated integrally with the gear G4.

The fixed electrode group T has contacts T1, T2, etc. at equal intervals E for each gear of the change gear A, and one contact (for example, T1) is connected to the protruding stop electrode Sc. When in contact with part sb, the other contacts T2, T3... are in contact with the rotating electrode Sa, and the contacts T
, , T2... The rotating electrode Sa and the stop electrode S
The rotating electrode 8al is configured so that there is no electrical conduction between the rotating electrode 8al and the protruding portion Sb of the rotating electrode 8al.

t is a stop contact that short-circuits the stop electrode Sc and the DC motor M, and is always in contact with the stop electrode Sc.

In this first embodiment, the changeover switch S is of the sliding contact type as described above, but as in the other embodiment shown in FIG. A micro switch W that switches the circuit by touching the protrusion ■
1. W2. . . . The changeover switch S may be constructed using a micro-sinch method in which N5 is provided on the periphery of the rotating drum U to perform the same function as the sliding contact method.

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

Inside the operating section is a manual switch S for selecting a change gear.
A polarity switch SW2 that switches the polarity of the voltage applied to W1 and the motor M coaxially connects the first operating shaft P1 of the manual switch SW1 and the second operating shaft P2 of the polarity switch SW2, and is attached to the first operating shaft P1. By rotationally moving the operating knob that has been rotated, the second operating shaft P2 is also rotated at the same time as the first operating shaft P1.

The change gear selection manual switch SW1 includes each contact T of the fixed electrode group T of the changeover switch S.

Fixed contacts N, , N2 connected to T2...
...and the first operating shaft P1 where the operating knob is attached.
It consists of a rotary set of switches consisting of a movable contact Q attached to the fixed contact so that one of the fixed contacts can be selectively switched.

The polarity switch SW2 for changing the polarity of the voltage applied to the motor M has two arc-shaped contacts X1. An insulating terminal plate 1 having two short contacts Y and Z located between X2 and the arc-shaped contact X1, X2 on the same surface, and the arc-shaped contact X1. Two shorting lead pieces R1 made of elastic material that slide on X2 and short contacts Y and Z,
R2, and the shorting lead pieces R1 and R2 are inserted into one side and added, and the narrow tube is provided with a clutch surface 2 having an uneven shape, etc., and a protruding strip provided as a means for regulating the rotation angle. The movable plate 4 has an insulating movable plate 4 having an angle of 3°3, and a clutch surface 5 having a concave and convex shape, which is connected to the clutch surface 21 of the movable plate 4 and transmits the rotational force from the second operating shaft P2 to the movable plate 4. 5 drive plate 6
are housed inside a case 7, and the movable plate 4 is moved by the elasticity of the shorting lead pieces R, , R2 to the drive plate 6.
They are pressed together.

Furthermore, the electric circuit diagram in the embodiment of the present invention is, for example, a sliding contact type (as shown in FIG. 7 in this case, and as shown in FIG. 8 in this case of a microsinch type). In the figure, the part shown within the dotted line is the part that includes the operating part number, and the manual switch SW1 has a plurality of fixed contacts N1...R5 and a movable contact Q, and the polarity switch SW2 The contacts ZA and ZB connected to the electrodes of the battery correspond to the short contacts ZI, and the contacts YA and YB connected to one pole of the battery correspond to the short contacts Yl, which supply power to the changeover switch S. Terminal T.

The contact X1 connected to the motor M and the stop contact t correspond to the arc-shaped contact X, and the contact X2 connected to the motor M and the stop contact t correspond to the arc-shaped contact X2.
2 corresponds to the shorting lead piece R1°R2.

7 and 8 of the electric circuit diagrams show a state in which the chain O is installed on the second stage A21 of the change gear A.

Next, the operating means of the present invention will be explained.

In Figure 7, the circuit diagram shows a state in which the chain is installed on the third stage A3 of the change gear A. In this diagram, the fourth stage gear A4 is shown.
(If you want to change this, move the operating knob on the operating section G to the 4th stage, the movable contact Q of the manual switch SW1 for change gear selection will contact the fixed contact N4 of the 4th stage, and the polarity The switch SW2 is configured such that the rotational force of the second operating shaft P2 is transmitted from the drive plate 6 to the movable plate 4 via the clutch surfaces 5 and 2.
Since I is transmitted, the shorting lead pieces R1 and R2 move in the clockwise rotation direction, and the arcuate contact X1 and the short contact Z come into contact with each other, and the arcuate contact X2 and the short contact Y contact with each other, so that the polarity switch SW
2 switches contact ZA and contact YB4JIljl,
The voltage polarity is switched so that it is reversed.

Then, the electrode of the battery → contact ZA of polarity switch SW2 →
Power supply terminal T of selector switch S.

→ Rotating electrode Sa → Contact T4 → 4th manual switch SW1
Fixed contact N4 → -ta M → contact R2 of polarity switch SW2
→A current flows through the battery terminal, the motor M rotates the selector switch S counterclockwise, and the stop electrode S.
When the protruding portion Sb of c reaches the position where it contacts the contact T4, current no longer flows to the motor M via the rotating type $i8a, and the motor M→stop contact t→stop electrode Sc→contact T4
→4th fixed contact N4 of manual switch SW1 → motor M,
Since the circuit is configured, the DC motor M due to the inertia 1
attempts to continue rotating, but the motor M is thereby dynamically braked, and therefore 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 guide gear device B moves backward from the tensile force of the springle, and moves the pair of gears b' and b'' from the third gear A3 position to the fourth gear A4 position.

As mentioned above, by stopping the motor M, the pair of gears b' and b'' are stopped at the 4th gear A4 position, and the chain o installation is changed from the 3rd gear to the 4th gear I. The gear ratio can be lowered.

Next, if you want to change to the fifth gear A5 of change gear A, move the operating knob one rotation to the fifth gear.

Then, the movable contact Q of the change gear selection manual switch SW1 comes into contact with the fifth stage fixed contact N5.

However, in the case of the polarity switch 5w2i, the rotational force is
The drive plate 4i of the operating shaft P2 is applied, but since the protruding strips 3, 3 provided on the movable plate 4I contact the notches 8, 8 of the case, the clutch surface 2 of the movable plate 4 slides, and the movable plate 4 does not move, so set the polarity switch SW2 to the 3rd operation knob.
The state is the same as when switching from the fourth stage to the fourth stage.

Therefore, the current flows in substantially the same manner as described above, with the only difference being that it flows from the rotating electrode Sa through the contact T5 to the fifth fixed contact N5 of the manual switch SW1, and the motor M operates in the same manner as described above.
The construction of the chain o can be switched from the 4th stage to the 5th stage.

Next, change gear A from the fifth stage A5 to the second stage A2.
If you want to change it by 1, move the operation knob 1 to the second stage.

Then, the movable contact Q of the change gear selection manual switch SW comes into contact with the second stage fixed contact N2I, and the polarity switch SW2 operates in the same manner as described above, that is, the second operating shaft P2 rotates counterclockwise. The force in the direction is transmitted to the drive plate 6 and to the movable plate 4I via the clutch surface 5.2, so the shorting lead pieces R1 and R2 move in the counterclockwise rotation direction, and the arc-shaped contact X
1 and the short contact Y, and the circular arc contact X2 and the short contact Z, so that the polarity switch SW2 contacts the contact YA and the contact Z
Switching to the B side, the battery polarity is reversed, and the additional leftward rotational force is caused by the protruding strips 3, 3 provided on the movable plate 4 coming into contact with the notches 8, 8 of the case, so that the clutch Surface 5,
2 slips, and the movable plate 41 is not moved and maintains the switched state.

Therefore, the electrode of the battery → contact ZB of polarity switch SW2
→Motor M→2nd fixed contact N2 of manual switch SW1→
Contact T2 → rotating electrode Sa → power supply terminal T.

→Contact YA of polarity switch SW2→One pole of the battery, so a voltage in the opposite direction to that mentioned above is applied to the motor M, which rotates the changeover switch S clockwise, and the stop electrode Sc. When the protrusion sb reaches the position where it contacts the contact T4, the current from the rotating electrode Sa stops flowing through the motor MI, and the motor M is made up of a stop contact t, a stop electrode Sc, a contact T2, etc., as described above. Since a motor short circuit is configured, the motor M immediately stops due to dynamic braking, and the rotation due to the inertia of the motor M prevents the winding drum J and guide gear device B from stopping at a position other than the predetermined position. 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 up by the winding drum J1.

Therefore, the guide gear device B moves from the fifth gear A3 position and stops at the second gear A2 position.

The present invention is as described above. The chain is selectively engaged with any one of the plurality of change gears installed on the drive wheel via a guide gear device disposed close to the change gear. In a device that uses a flexible wire to move by forward and reverse rotation of the motor, a polarity switch that changes the polarity of the voltage applied to the motor and a manual switch for selecting a change gear are linked together and the motor is moved at a suitable location on the vehicle. A rotary drum driven by the forward and reverse rotation of the motor is provided, and the same number of changeover switches as the change gears are operated in correspondence with the change gear selection manual switch. As mentioned in i
This invention does not require a large amount of force to shift gears, and therefore there is no risk of vehicles, especially bicycles, being swayed or falling over, making this invention beneficial in terms of traffic safety.

[Brief explanation of the drawing]

The figures are all diagrams explaining the transmission of the present invention. Figure 1 is an overall view of the bicycle (with the bicycle installed), Figure 2 is a perspective view of the operating section, Figure 3 is an internal view of the control box, and Figure 4 is the reduction gear. Figure 5 is a plan view of the device, Figure 5 is a perspective view of the transmission mechanism, and Figure 6 is an operational diagram of the transmission mechanism. Furthermore, Figs. 7 and 8 are electrical circuit diagrams showing embodiments of the present invention, with Fig. 7 using a sliding contact method, and Fig. 8 using a sliding contact method.
The figure shows one using the microswitch method. Fig. 9 shows the polarity switch l, Fig. A is a front view of the completed product, Fig. B is a cross-sectional view of the same, Fig. C is an exploded view, and Fig. D shows the shorting lead connected to the arc-shaped contact X1 and the short contact Y. , and arc-shaped contact X
2 and short contact Z, Figure E shows the operation diagram where the short lead shorts X1 and Z, and X2 and Y, and Figure F shows the operation diagram where the short lead shorts between It is a combination diagram with a manual switch. G: Control box, G: Operation section,
A: Change gear, B: Guide gear device, O: Chain, M: Motor, H: Flexible wire, SW2.・・・
...Polarity switch, SWl...Manual switch for change gear selection, U...Rotating drum, S...
...Choice switch, Xl, X2...Circular contact, Y, Z...Short contact, 1...Terminal board, R1, R2... ...Short lead piece, 4...
...Movable plate, 2...Clutch surface of movable plate, 6
...Drive plate, 5...Clutch surface of drive plate, 7...Case.

Claims (1)

[Claims] 1. A chain is selectively engaged with any one of a plurality of change gears installed on a drive wheel via a guide gear device disposed close to the change gear. , A flexible wire is used to move the guide gear by the regular rotation of the motor (in this case, a polarity switch that changes the polarity of the voltage applied to the motor and a manual switch for selecting a change gear are linked together to move it to the right place on the vehicle). An electric transmission for a vehicle, which is installed on a rotating drum driven by the forward and reverse rotation of the motor, and has the same number of changeover switches as the change gears operated in correspondence with the change gear selection manual switch. 2. As a polarity switch for changing the polarity of the voltage applied to the motor, an insulator is installed on the same surface with two arcuate contacts positioned to form a circle and two short contacts located between the arcuate contacts. a terminal plate, two shorting lead pieces that slide on the arcuate contact and the short contact, the shorting lead pieces are attached to one side, and a clutch surface is provided on the other side, and the rotation angle is regulated. A patent claim characterized in that an insulating movable plate provided with a means and a drive plate equipped with a clutch surface that connects the clutch surface of the movable plate and transmits rotational force to the movable plate are housed in a case. The electric transmission device for a vehicle according to item 1.