JP2002098225A - Transmission control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission control device of thin and small-sized construction, in which the managing accuracy of the pushing/pulling amount of a wire to be pushed and pulled when the gear ratio of a transmission is to be changed over is enhanced. SOLUTION: The transmission control device works in combination with a transmission whose gear ratio changes with the pushing/pulling motions of wire, wherein the wire is coupled with a pulley 6 for pushing the wire and pulling, and in a part of the pulley periphery, a wire winding region 63 is formed in an arc of circle, and a pulley side gear part 39 for transmitting the driving force of a motor is provided rigidly on the pulley periphery in its part other than the wire winding region 63. A mode switch senses the position information of the pulley 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a transmission control device,
In particular, the present invention relates to a transmission control device used in combination with a transmission whose gear ratio changes by pushing and pulling wires.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 10-181671 describes a transmission and a transmission control device of the above type.
According to this, the driving force of the motor of the battery power source is transmitted to the wire through the reduction gear group, and the rotation amount of the output gear of the reduction gear group is detected to control the rotation of the motor, thereby controlling the operation amount of the wire. (Push-pull amount) is controlled, and the transmission is controlled so as to stop at a predetermined gear ratio position depending on the wire pull-in position.

In an automatic transmission system such as a bicycle or a motorcycle capable of automatic transmission, the actual vehicle speed (actual running speed) is detected, and the direction and amount of rotation of the motor are determined based on the actual running speed detection signal. The control is performed to determine the amount of pushing and pulling of the wire, and further, control is performed such that the transmission is switched to a speed ratio suitable for the actual running speed according to the amount of pushing and pulling of the wire.

In such an automatic transmission system, the wire is pushed and pulled by a wire pushing / pulling member connected to a base end of the wire as one of means for informing which speed ratio the transmission is currently set to. There is a means (speed ratio display means) for displaying the current gear ratio of the transmission by associating the position information of the wire pushing / pulling member with the pushing / pulling amount of the wire.

Conventionally, the speed ratio display means has been embodied by the configuration described below. That is, it is means for transmitting the driving force of the motor to the wire pushing / pulling member and using a microswitch to detect the position information of the wire pushing / pulling member. In order to adopt this means, (a) a method of transmitting the driving force of the motor to a rotating cam through a gear train and swinging the wire pushing / pulling means by the rotating cam, (b) A method of transmitting a driving force to a wire pushing / pulling member coupled to the intermediate gear via an intermediate gear; (c) forming the wire pushing / pulling member by a pulley, and forming a gear portion on the entire outer periphery of the pulley; A method of transmitting the driving force of the motor to the pulley through the gear portion has been used.

[0006]

However, the above means and the methods (a), (b) and (c) have the following problems.

That is, since the microswitch can output only two output signals, ON / OFF, due to its structure, the position information of the wire pushing / pulling member is detected only as a relative position from a predetermined reference position. Can not do. Therefore, it has been difficult to easily obtain accurate position information of the wire pushing / pulling member.

Further, since the microswitch can detect only the position information of the wire pushing / pulling member as the relative position as described above, if the method (a) is adopted, the wire pushing / pulling member is positioned at the reference position. The position information of the wire pushing / pulling member cannot be obtained unless the initial position is set. However, in order to set the initial position of the wire pushing / pulling member, the rotating cam is rotated, and the rotating cam is rotated at a rotating position corresponding to the reference position of the wire pushing / pulling member. Be done)
It is necessary to perform an operation of positioning the wire push / pull member at the reference position by causing the wire push / pull member to collide. When such an operation of setting the initial position is performed, a high load due to the collision between the rotating cam and the stopper is applied to the motor and the gear train, which is not preferable in improving the durability of the product.
Also, if the gear train of the gear train is made thicker to increase the tooth strength in order to prevent the gear train from being destroyed from the high load as described above, this would hinder the thinning and miniaturization of the product. This is not preferable in reducing the thickness or size of the product. Further, a wire pushing / pulling member and a rotating cam are required, so that the number of parts is increased, and the cost is accordingly increased.

When the method (b) is adopted, since the wire pushing / pulling member and the intermediate gear are separate parts, it is necessary to use a method such as press-fitting to integrally connect the two. However, in this case, not only does the entire wire push / pull amount adjustment section including the wire push / pull member and the intermediate gear become thicker, but also the assembly tolerance increases as the number of parts increases.
It is difficult for the actual wire pushing / pulling amount to be accurately reflected on the position information of the wire pushing / pulling member. That is, it becomes difficult to improve the accuracy of managing the wire push / pull amount.

When the above method (c) is adopted, it is necessary to form a groove-shaped wire winding area on the outer periphery of the pulley, so that the tooth width of the gear portion formed on the entire outer periphery of the pulley is made sufficiently large. If the required strength of the gear portion is secured in this way, the entire pulley becomes thick, making it difficult to reduce the thickness of the product. Also,
If the tooth width of the gear portion is reduced in order to make the product thinner, it becomes difficult to secure the required strength of the gear portion.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made by using a pulley as a push / pull member for pushing / pulling a wire and using a mode switch in place of the above-mentioned microswitch. A shift that allows accurate position information to be output as absolute position information regardless of where the pulley is stopped, so that accurate position information of the wire push-pull member can be easily obtained. It is an object to provide a machine control device.

The present invention also relates to a transmission as a product despite the fact that the present invention employs a configuration in which the driving force of the motor is transmitted to the pulley via a gear unit integrally connected to the pulley. A transmission control device that facilitates thinning and miniaturization of the control device, can easily increase the durability thereof, and further suppresses an increase in the number of parts and facilitates cost reduction. The purpose is to provide.

Another object of the present invention is to provide a transmission control device capable of easily improving the management accuracy of the wire push / pull amount.

[0014]

A transmission control device according to the present invention will be described with reference to the drawings. The use of reference numerals in the figures in this section is for the purpose of helping to understand the contents of the invention, and is not intended to limit the contents to the examples in the drawings.

The transmission control device according to the present invention includes a wire 7
Is used in combination with a transmission in which the gear ratio changes by the push-pull operation.

In the present invention, the base end of the wire 7 is connected to the pulley 6 which pushes and pulls the wire 7 by rotation, and a winding area 63 of the wire is formed in a part of the outer periphery of the pulley 6 in an arc shape. A pulley-side gear portion 39 for transmitting the driving force of the motor 2 is integrally connected to the other portion of the outer periphery of the pulley 6 except for the winding region 63. The motor 2 has a function of rotating the pulley 6 forward and backward by an angle corresponding to an appropriate push / pull amount of the wire 7 based on a vehicle speed detection signal.

According to the thus configured transmission control device, the outer periphery of the pulley 6 is circumferentially divided into the wire winding region 63 and the pulley-side gear portion 39 forming region.
The tooth width of the pulley-side gear portion 39 is no longer limited by the width of the wire winding region 63. Therefore, it is possible to secure the required strength of the pulley-side gear portion 39 by making the tooth width of the pulley-side gear portion 39 sufficiently large, and to reduce the size and size of the transmission control device by reducing the pulley-side gear portion. Gear part 3
The effect of being less likely to be hindered by the tooth width of 9 is exhibited. This action is achieved by setting the tooth width dimension of the pulley-side gear portion 39 to be smaller than the thickness dimension of the wire winding region 63 of the pulley, and at the top of the peak forming the pulley-side gear portion 39. The distance R1 between the center P1 of the pulley and the center P1 of the pulley is set to be equal to or shorter than the radius of the arc-shaped winding region 63, so that it can be more remarkably exhibited.

The transmission control apparatus according to the present invention includes the pulley 6
Is provided with a mode switch 5 for detecting the position information.
The mode switch 5 includes a rotor 51 and the rotor 5
1 and a wiring board 54 having an electrode pattern 53 to which the electrodes 52 are separated from each other in accordance with the rotational position of the rotor 51. This type of mode switch 5 can be used at any rotation position of the rotor 51,
It has a function of outputting position information of the rotor 51 as absolute position information. Therefore, by associating the rotation position of the rotor 51 with the rotation position of the pulley 6,
It is possible to output the absolute position information of the rotor 51 as the absolute position information of the pulley 6.

In the present invention, it is preferable that the wiring board 54 has a wiring pattern for inputting a control signal of the motor 2 together with the electrode pattern 53,
According to this, since the electrode pattern 53 of the mode switch 5 and the wiring pattern for inputting the control signal of the motor 2 are formed on one wiring board, the separate patterns formed with the respective patterns are formed. This makes it easier to reduce the thickness of the transmission control device as compared to a case where two wiring boards are arranged in an overlapping manner.

Further, in the present invention, a two-stage gear which is rotated by the driving force of the motor 2 is provided. One side gear 36 of the two-stage gear meshes with the pulley-side gear portion 39, and the other of the two-stage gears. It is possible to adopt a configuration in which the side gear 37 meshes with a rotor-side gear portion 38 integrally provided on the outer periphery of the rotor 51.
Compared to a case where the gears for transmitting the driving force of the motor 2 to the pulley-side gear portion 39 and the rotor-side gear portion 38 are separately formed and arranged side by side, the planar installation space of the gears is greatly reduced. Therefore, it becomes easier to reduce the size of the transmission control device.

On the other hand, it is also possible to adopt a configuration in which an intermediate gear that is rotated by the driving force of the motor 2 is provided, and the rotor 51 is connected to the concentric position of the intermediate gear in an overlapping manner. . This configuration is useful for remarkably reducing the size of the transmission control device at the expense of thinning.

In the present invention, the rotation speed VP of the pulley 6
And the rotational speed Vm of the rotor 51 has a relationship of VP <Vm, and the mode switch 5 is set to a position information signal corresponding to all the speed ratios of the transmission before the rotor 51 makes one revolution. Is desirably provided, and by adopting this configuration, it becomes easy to improve the management accuracy of the wire pushing / pulling amount. That is, V
If the relationship of P <Vm is maintained, the mode switch 5
Even if there is a deviation from the actual position information of the pulley 6 in the signal pattern output by the above, the magnitude of the deviation does not affect the position of the pulley 6 as it is, but is VP / Vm times. To work. Therefore, fine adjustment of the rotational position of the pulley can be performed relatively easily.

[0023]

1 and 2 schematically show the structure of a transmission control device according to an embodiment of the present invention. In this transmission control device, a middle case 1 is attached to a substantially rectangular outer case 1.
2 can be attached. FIG. 1 is a plan view showing the internal structure of the transmission control device with the middle case 12 attached thereto, and FIG. 2 is a plan view showing the internal structure of the transmission control device with the middle case 12 removed. .

As shown in FIG. 2, a motor 2, a gear train 3 for transmitting the driving force of the motor 2, a mode switch 5, and the like are attached to the outer case 1.

The rotation direction and amount of rotation of the motor 2 are controlled based on an actual running speed detection signal obtained by detecting the actual running speed of a bicycle or a motorcycle. The power source of the motor 2 is a battery. The gear train includes a group of gears shown in FIG. 2, that is, a small-diameter gear 31 fixed to the rotating shaft of the motor 2, a large-diameter gear 32 meshing with the small-diameter gear 31, and concentric with the large-diameter gear 32. The deployed small-diameter gear 33, the large-diameter gear 34 meshing with the small-diameter gear 33, the large-diameter gear 34
A small-diameter gear 35 disposed concentrically with the small-diameter gear 35, a small-diameter gear 36 meshing with the small-diameter gear 35, a large-diameter gear 37 disposed concentrically with the small-diameter gear 36, and provided on the entire outer periphery of a rotor 51 of the mode switch 5 described later. In addition to the rotor-side gear portion 38, a pulley-side gear portion 39 provided on the outer periphery of the pulley 6 shown in FIG. 1 is included. In each of the gears forming the gear train 3 described above, the large-diameter gear 32
The small-diameter gear 33, the large-diameter gear 34 and the small-diameter gear 35, and the small-diameter gear 36 and the large-diameter gear 37 are two-stage gears integrally formed of synthetic resin. In this way, when one large-diameter gear and one small-diameter gear are combined as a two-stage gear integrally formed, the gear train 3 is used as the outer case 1.
The outer case 1 can be easily arranged in a narrow space inside, so that the size of the outer case 1 can be easily reduced.

FIGS. 3 to 5 show the pulley 6 and the wire 7 connected to the pulley 6. The pulley 6 is attached to a support shaft 13 provided in the middle case 12 so as to be able to rotate forward and backward as shown in FIG. Is fitted so as not to be detached. Also,
The pulley 6 has a groove 62 extending from the concave portion 61, and a wire winding area 63 connected to the groove 62 and formed in a part of the outer periphery of the pulley 6 so as to be sectioned in an arc shape. A portion near the end is fitted into the groove portion 62, and the wire 7 is wound around the wire winding region 63 by the forward / reverse rotation of the pulley 6 (arrow a in FIG. 5). 7 is paid out. In the wire wrapping area 6, the wire 7 is fitted in the groove 64 formed on the outer periphery of the pulley 6 so as not to be separated from the pulley 6. Further, a pulley-side gear portion 39 is provided on the other portion of the outer periphery of the pulley 6, that is, on the other portion of the outer periphery except for the pulley winding region 63. As described above, if the outer circumference of the pulley 6 is divided into the wire winding region 63 and the region where the pulley-side gear portion 39 is formed in the circumferential direction, the tooth width of the pulley-side gear portion 39 depends on the width of the wire winding region 63. Since it is no longer limited, the tooth width dimension of the pulley-side gear portion 39 can be made equal to the thickness dimension of the wire winding region 63 of the pulley 6, whereby the required strength of the pulley-side gear portion 63 can be reduced without difficulty. As a result, it is useful to improve the durability of the transmission control device while reducing the size and size of the transmission control device. If the required strength of the pulley-side gear portion 63 can be ensured, the tooth width of the pulley-side gear portion may be smaller than the thickness of the wire winding region 63.

The pulley-side gear portion 39 is connected to the pulley 6 by being integrally formed with the pulley 6 with a synthetic resin. For this reason, another gear for rotating the pulley 6 becomes unnecessary, and the number of parts is reduced accordingly. As shown in FIG. 1, the small-diameter gear 36 included in the gear train 3 meshes with the pulley-side gear portion 39.

In this embodiment, as shown in FIG.
The mutual length R1 between the apex P2 of the peak forming the pulley-side gear portion 39 and the center P1 of the pulley 6 is set to be the same as the radius of the arc-shaped pulley winding region 63. In other words, the extension line (in the form of an arc) of the outer periphery of the pulley winding area 63 indicated by the broken line m in FIG. A portion 39 is formed. By doing so, the pulley-side gear portion 39 does not protrude outside the pulley 6, which helps to reduce the size of the transmission control device. If the required length of the pulley-side gear portion 39 can be ensured, the mutual length R1 between the apex P2 of the peak forming the pulley-side gear portion 39 and the center P1 of the pulley 6 is set.
May be shorter than the radial length of the arc-shaped pulley winding area 63.

FIG. 6 is a schematic plan view of the mode switch 5, and FIG.
FIG. 7 is an enlarged schematic sectional view taken along the line IIV-IIV in FIG. 6. The mode switch 5 includes a rotor 51, a sliding electrode 52 such as a brush electrode held on the lower surface side of the rotor 51, and an electrode 52 depending on the rotational position of the rotor 51.
And a wiring board 54 provided with an electrode pattern 53 to be separated from and connected to. The rotor 51 has a rotor-side gear portion 38 integrally connected to the entire outer periphery thereof, and the large-diameter gear 37 of a two-stage gear meshes with the rotor-side gear portion 38 as shown in FIG. The rotor 51 is rotatably held by a rotor holding frame 55 fixed to a wiring board 54 as shown in FIG. The electrode pattern 53
Is formed of a copper foil having a broken circle shape corresponding to the number of speed ratios that can be set by the transmission. That is, when the speed ratio of the transmission controlled by the pushing / pulling operation of the wire 7 (see FIG. 5) has three stages of first speed, second speed, and third speed, the electrode pattern 53 becomes The position information of the rotor 51 and the position information of the pulley 6 depend on which of the three copper foils is in contact with the electrode 52 on the rotor 51 side. Is detected. This point will be described later with a specific example.

The mode switch 5 shown in FIG. 6 has a dedicated wiring board 54 for the mode switch 5. Therefore, it is necessary to arrange the wiring board 54 of the mode switch 5 on a wiring board (not shown) having a wiring pattern for inputting a control signal of the motor 2 shown in FIG. When the wiring board 54 of the mode switch 5 is superimposed on the wiring board for inputting the motor control signal in this manner, there is a possibility that the transmission control device is made thinner by the overlapping portion. In order to solve this problem and facilitate the reduction in the thickness of the transmission control device, a motor control signal is transmitted to a single wiring board together with an electrode pattern 53 to which the electrode 52 of the rotor 51 is separated and attached. It suffices to form a wiring pattern for inputting, and if this is done, it is not necessary to arrange two wiring boards in an overlapping manner, so that the transmission control device can be made thinner accordingly. .

The gear train 3 described with reference to FIGS. 1 and 2 has a function of reducing the rotation of the motor 2 and transmitting the rotation to the pulley 6 and the rotor 51 of the mode switch 6. The gear train 3 also controls the rotation speed VP of the pulley 6 and the rotor 51.
Are determined so that the relationship of VP <Vm is satisfied. Therefore, even if the signal pattern output by the mode switch 5 has a deviation from the actual position information of the pulley 6, the actual deviation amount is VP / Vm times the magnitude of the deviation. Therefore, when the current gear ratio of the transmission is displayed on a display or the like based on the signal pattern output by the mode switch 5, the actual position information of the pulley 6 is accurately reflected on the display. Therefore, the accuracy of controlling the amount of push / pull of the wire 7 pushed / pulled by the forward / reverse rotation of the pulley 6 is improved, and fine adjustment of the rotational position of the pulley 6 can be relatively easily performed. This effect is more remarkably exhibited as the difference between VP and Vm is larger.
The signal pattern output when the electrode pattern 53 and the electrode 52 provided on the wiring board 54 of the mode switch 5 are separated from each other returns to the original pattern when the rotor 51 makes one rotation, so that VP <Vm In order to achieve the intention of improving the management accuracy of the push-pull amount of the wire 7 by maintaining the relationship of the above, the position information corresponding to all the gear ratios of the transmission until the rotor 51 makes one rotation. The mode switch 5 needs to have a function of outputting a signal.

In this embodiment, when the motor 2 rotates by a predetermined angle in the forward or reverse direction based on the actual running speed detection signal of a bicycle or a motorcycle, the driving force is transmitted through the gear train 3 to the pulley 6 or the mode. The power is transmitted to the rotor 51 of the switch 5. When the pulley 6 rotates in the forward or reverse direction to pull in or push out the wire 7, the transmission switches to a gear ratio suitable for the actual running speed according to the amount of pushing and pulling of the wire 7. Further, the rotor 51 of the mode switch 5 rotates to a position corresponding to the position of the pulley 6, and outputs a predetermined signal pattern corresponding to the current gear ratio of the transmission.

Next, the operation of the pulley 6 and the mode switch 5 in the case where the speed ratio of the transmission has three stages of first speed, second speed, and third speed will be specifically described.

FIGS. 8 to 10 show that the speed ratio of the transmission is 1st, 2nd.
FIG. 11 is an explanatory view showing the state of the pulley 6 and the wire 7 when the speed is set to the third speed, and FIG.
12 is an explanatory diagram showing the relationship between the rotation angle of the rotor 51 and the wire pushing / pulling amount, FIG. 12 is an explanatory diagram showing a signal pattern output by the mode switch 5, and FIG. 13 is an explanatory diagram showing the state of the transmission. It is. In FIG. 12, C-1,
C-2 and C-3 are the electrode patterns 5 of the mode switch 5
3 shows three electrodes forming 3. The signal pattern output by the mode switch 5 is ON [1], OFF by each of the three concentric copper foils.

It is assumed that the signal [0] is output.

As can be seen in FIG.
Between the speeds, there is an indeterminate stage between each of the second and third speeds.
Then, at the neutral position of the pulley 6 shown in FIG. 9, the wire 7 is drawn so as to wind a little around the wire winding area 63, and at that time, the transmission is set to the second speed. At this time, as shown in FIG.
Is 0 degree, and the mode switch 5 outputs a signal of [1, 1, 0].

When the pulley 6 is slightly rotated from the neutral position in the reverse direction as shown in FIG.
The wire 7 is pushed out from 3 and the transmission is set to the first speed. At this time, as shown in FIG.
7 mm, the rotation angle of the pulley 6 is -40 degrees, the rotation angle of the rotor 51 is -200 degrees, and the mode switch 5 outputs a signal of [1, 0, 1].

When the pulley 6 is slightly rotated in the forward direction from the neutral position as shown in FIG. 10, the transmission is set to the third speed by being pulled into the wire winding area 63. At this time, as shown in FIG. 11, the wire pull-in amount is 5 mm, the rotation angle of the pulley 6 is 30 degrees, and the rotation angle of the rotor 51 is 15 degrees.
0 degrees and [0, 1, 1] by the mode switch 5
Is output.

As can be seen from FIG. 13, when the transmission is set to an indeterminate stage between the first speed and the second speed, the mode switch 5 outputs a signal of [0, 1, 0] to change the speed. When the machine is set to an indeterminate stage between the second and third speeds, the mode switch 5 outputs the signal [0, 1, 1].

In the embodiment described above, the driving force of the motor 2 is controlled by the gear 38 on the outer periphery of the rotor 51 of the mode switch 5.
However, the point is that the gear 38 on the outer periphery of the rotor 51 is omitted, and the rotor 51 is concentrically coupled to the two-stage gear in the gear train 3. It is also possible to employ. This case is shown in FIGS.

In this case, as shown in FIG.
A boss portion 56 and a projection 57 are provided at the center portion and the eccentric portion of the base portion 36. A small-diameter gear 36 is disposed on the rotor 51, and the boss portion 56 is provided on the small-diameter gear 36. Of the base portion 3
The two are coupled by fitting into the hole 42 of the eccentric part 6a. By doing so, the small-diameter gear 36 and the rotor 51 rotate integrally in the same direction, so that a signal similar to that described with reference to FIG. The configuration described in this case is shown in FIG.
This is useful when the outer case 1 described with reference to FIG. 2 and FIG. 2 is small and it is difficult to secure a space for installing the mode switch 5 alone therein.

[0041]

As described above, according to the present invention, it is possible to output accurate position information as absolute position information regardless of the position where the pulley is stopped.
Accurate positional information of the wire push / pull member can be easily obtained. In addition, the transmission control device as a product can be easily made thinner and smaller, and its durability can be easily increased. Further, the increase in the number of parts can be suppressed and the cost can be reduced. It is possible to provide a transmission control device that is easy to achieve. Further, it is possible to easily improve the management accuracy of the wire pushing / pulling amount.

[Brief description of the drawings]

FIG. 1 is a schematic plan view in a state where a middle case of a transmission control device according to the present invention is attached.

FIG. 2 is a schematic plan view showing the state where the middle case is removed.

FIG. 3 is a plan view of the pulley 6;

FIG. 4 is a partial view of a wire.

FIG. 5 is a plan view of a pulley to which wires are connected.

FIG. 6 is a schematic plan view of a mode switch.

FIG. 7 is an enlarged schematic sectional view taken along line VII-VII of FIG.

FIG. 8 is an explanatory diagram showing a state of a pulley and the like when the transmission is set to a first speed.

FIG. 9 is an explanatory diagram showing a state of a pulley and the like when the transmission is set to a second speed.

FIG. 10 is an explanatory diagram showing a state of a pulley and the like when the transmission is set to a third speed.

FIG. 11 is an explanatory diagram showing a relationship between a rotation angle of a pulley or a rotor and a wire pushing / pulling amount.

FIG. 12 is an explanatory diagram showing a signal pattern output by a mode switch.

FIG. 13 is an explanatory diagram showing a state of a transmission.

FIG. 14 is a schematic plan view of a mode switch according to a modification.

FIG. 15 is an enlarged schematic sectional view taken along line XV-XV of FIG.

[Explanation of symbols]

2 Motor 5 Mode switch 6 Pulley 7 Wire 36 Small diameter gear (one side gear of two-stage gear) 37 Large diameter gear (other side gear of two-stage gear) 38 Rotor side gear 39 Pulley side gear part 51 Rotor 52 Electrode 53 Electrode pattern 54 Wiring board 63 Wire winding area R1 Distance between the top of the peak of the pulley side gear and the center of the pulley

Claims (8)

[Claims] 1. A transmission control device used in combination with a transmission in which a gear ratio is changed by a push / pull operation of a wire, wherein a base end of the wire is connected to a pulley that pushes / pulls the wire by rotation. The pulley-side gear for transmitting the driving force of the motor to the other part of the outer periphery of the pulley except for the winding region, the winding region of the wire being formed in an arc shape on a part of the outer periphery of the pulley. A transmission control device, characterized in that the units are integrally connected, and a mode switch for detecting position information of the pulley is provided. 2. The transmission control device according to claim 1, wherein the motor has a function of rotating the pulley forward and reverse by an angle commensurate with an appropriate push-pull amount of the wire based on an actual running speed detection signal. . 3. The pulley-side gear portion has a tooth width dimension smaller than a thickness dimension of a wire winding area of the pulley, and a vertex of a peak portion forming the pulley-side gear portion and the peak width. 3. The transmission control device according to claim 1, wherein a distance between the pulley and the center is set to be equal to or shorter than a radius of the arc-shaped winding region. 4. 4. The mode switch according to claim 1, wherein the mode switch includes a rotor, an electrode provided on the rotor, and a wiring board provided with an electrode pattern to which the electrode is separated from and separated according to the rotational position of the rotor. The transmission control device according to claim 3. 5. The transmission control device according to claim 6, wherein the wiring board includes a wiring pattern for inputting a control signal for the motor together with the electrode pattern. 6. A motor that rotates by a driving force of the motor.
One of the two-stage gears meshes with the pulley-side gear portion, and the other side gear of the two-stage gear meshes with a rotor-side gear portion integrally connected to the outer periphery of the rotor. The transmission control device according to claim 4 or claim 5, wherein 7. The transmission control device according to claim 4, further comprising an intermediate gear that is rotated by a driving force of the motor, wherein the rotor is coupled in a concentric position with the intermediate gear. . 8. The rotation speed VP of the pulley and the rotation speed Vm of the rotor have a relationship of VP <Vm, and all of the transmissions of the transmission are set until the mode switch makes one rotation. The transmission control device according to any one of claims 1 to 7, further comprising a function of outputting a position information signal corresponding to a gear ratio.