JP2774415B2 - Position shift control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a displacement control device applied to, for example, a direction control mechanism of a toy, a speedometer, and the like.

[0002]

2. Description of the Related Art Conventionally, a displacement controller generally used for a printer of a computer generally generates a displacement using a stepping motor. In the displacement control by the stepping motor, the rotation of a specific angle is generated mainly by a large number of coil members provided therein in accordance with the degree of an external control pulse signal. Is complex, and the control circuit requires control to generate a large number of control pulses and a time sequence, the necessary control mechanism is also complicated, the product price is high, and the displacement control device can perform simple displacement control. Had been requested.

For example, as a direction control device for a toy, there is known a device that uses a servo mechanism to control the amount of displacement, but this device is usually applied by using an independent power mechanism. Supply the necessary power to the servo mechanism,
Further, the rotary shaft is pulled by the movement of the servo mechanism to obtain an appropriate change in the amount of displacement.

[0004]

The position shift control mechanism using the above servo mechanism requires not only a large size with a complicated structure of a combination of a power mechanism and a servo mechanism, but also high precision and complicated transmission at the same time. that for servomechanism, also structure, there is a problem in manufacturing, it becomes difficult on the maintenance, at a position displaced driving apparatus according to a servo mechanism,
It is difficult to provide a simple structure, and there is a problem similar to that of the displacement control apparatus using the above-described step motor.

The present invention has been made in view of the above-mentioned conventional problems, and the control drive shaft is controlled by a change in the rotation speed of a drive source.
Is rotated, and the rotation angle and rotation amount of the control drive shaft is obtained with a simple structure without requiring a complicated control circuit, there is provided a positional deviation control device which does not require high precision .

[0006]

According to a first aspect of the present invention, there is provided a position shift control device, wherein a main drive gear rotated by the power of a drive source is provided.
27 and is located on the same axis as the rotating shaft 23 of the driving gear 27 and
It is provided rotatably with respect to the rotating shaft 23 of the driving gear 27.
The control drive shaft 30 is integrated with the control drive shaft 30 as a central axis.
And a position deviated from the center axis of the shaft stand 33.
Driven so as to be rotatably supported by the drive gear and meshing with the driving gear 27
The driven and gear 35, the rotational load on the driven gear 35
Generated according to the rotation speed of the member that rotates in conjunction with the gear 35
The control drive shaft and the load device 40, 51 which changes according to a change in the rotational speed of the main driving gear 27 by the resistance force, the bearing base 33 the shaft base 33 is the load of the load device 40, 51 that
A balance spring 34 for urging in a direction opposite to the direction of rotation around the 30, driven gear of the load device 40, 51 by changing the rotational speed of the main driving gear 27
35 by changing the rotational load for by changing the elasticity and angle of rotation and the rotary shaft 23 on the same axis of the main driving gear 27 to the control drive shaft 30 on the bearing base 33 under conditions that equilibrium of the balance spring 34 It is to let.

According to a second aspect of the present invention, in the displacement control apparatus of the first aspect, the load device for changing the rotational load of the driven gear transmits power of a driving source to the driven gear via an intermediate gear. Is what is done.

According to a third aspect of the present invention, there is provided a position shift control device according to the second aspect, wherein the load device includes a load gear rotated by rotation of a driven gear and a centrifugal force mechanism provided on the load gear. It is constituted by.

[0009]

In the position shift control device according to the first aspect, when the driven gear is rotated by the power of the driving source of the main driving gear, the driven gear is also rotated. By changing the rotation speed of the driving gear, the rotation load on the driven gear of the load device is changed, and the headstock is controlled in the direction opposite to the biasing direction by the balance spring.
The shaft is rotated about a moving shaft, and the headstock rotates until the elasticity of the balance spring is balanced. Then, the control drive shaft on the bearing base and rotating the rotation axis on the same axis as the main driving gear, this rotation angle is an angle corresponding to the rotation speed of the main driving gear.

According to a second aspect of the present invention, the motive power of the drive source is transmitted to the driven gear meshed with the driving gear via the intermediate gear.

According to a third aspect of the present invention, the load device is constituted by a centrifugal force mechanism, and a large change in load on the driven gear can be obtained with respect to a change in the rotational speed of the driving gear.

[0012]

Next, an embodiment of the present invention will be described. First, prior to the description of a specific embodiment of the present invention, the principle of rotation of the present invention will be described. As shown in FIG. 5, in a state where the main driving gear 1 and the driven gear 2 are mainly engaged with each other, the two gears 1 and 2 are rotatable about one shaft base, for example, the link 3 by the rotation shafts 1a and 2a. It is pivoted on. When the driving gear 1 rotates clockwise by receiving a driving force from an electric motor or the like, the driven gear 2 rotates counterclockwise.

As shown in FIG. 6, when the driven gear 2 receives a rotation load F from another device during its rotation, that is, the rotation load F of the driven gear 2 is smaller than the torque of the main driving gear 1. When the driven gear 2 is continuously rotated and receives the rotational load F of the driven gear 2, a reaction force K is generated that transmits the rotation of the driven gear 2 to the driven gear 1 by receiving the load F. . The reaction force K gives rise to rotation force in the clockwise direction around the rotary shaft 1a of the main driving gear 1 to driven gear 2, the rotary shaft 1a of the rotating force receiving the link 3 is the main driving gear 1 This driven gear 2 Around the center .

[0014] Then, as shown in FIG.
The balance spring 4 is located near the driven gear 2.
And the other end of the balance spring 4 is fixed to a fixing point 5. Rotation of the link 3 by the balance spring 4 is continued until take equilibrium between the elastic force and the amount of rotation of the balance spring 4, as shown in FIG. 8, is rotated driven gear 2 by the rotational load F ₁ The larger the link, the larger the amount of rotation of the link 3.

Next, as shown in FIG. 9, a wind resistance load device 6 in which a rotation load F of the driven gear 2 is generated by the rotation of the driven gear 2 as a load device of the driven gear 2 in the device shown in FIG. Provided. The wind resistance load device 6 has a load gear 7 that meshes with the driven gear 2, and the load gear 7 meshes with the link 3 with the driven gear 2 and rotates on a straight line connecting the rotating shafts 1a and 2a. It is rotatably supported on the shaft 7a.

As shown in FIGS. 9, 11 and 12, the load gear 7 of the wind resistance load device 6 is provided with wind resistance blades 8 symmetrically positioned on a straight line passing through the rotating shaft 7a. .
As the rotational speed of the driven gear 2 is increased by the wind resistance load device 6, as shown in FIG.
, The rotational load F increases, and the amount of offset rotation of the link 3 increases.

As described above, by controlling the change in the rotation speed of the driving gear 1, the rotation speed of the driven gear 2 changes, and the resistance load F of the wind resistance load device 6 changes.
By utilizing the change in change resistive load F of the rotational speed of the driven gear 2 can control the times momentum link 3.

[0018] Then, the rotational momentum the link 3, the relationship between rotation amount of the rotational load F and the link 3 of the wind resistance load device 6, configuration and balance spring 4 which can vary the rotational load F of the driven gear 2 The wind resistance load device 6 for the driven gear 2 is, for example,
The centrifugal load device 10 shown in FIGS. 13 and 14 can be replaced.

The wind resistance load device 6 and the centrifugal load device 10 both rotate at a rotational speed of the driving gear 1 and the driven gear 2.
And the higher the rotation speed of the driven gear 2, the faster the load devices 6 and 10 are rotated, and the larger the rotation load F acting on the driven gear 2 becomes. The load change of the device 10 is larger than that of the wind resistance load device 6.

As shown in FIGS. 13 and 14, the centrifugal load device 10 includes a friction cylinder 12 fixed to the center of a load gear 11 and a centrifugal force mechanism 13.
A pair of mass members 14a, 14b, friction rings 15a, 15b fitted to the friction cylinder, and connecting bodies 16a, 16b connecting the mass members 14a, 14b and the friction rings 15a, 15b, are connected. The bodies 16a and 16b are prevented from rotating by stoppers 17a and 17b protruding from the load gear 11.

When the centrifugal load device 10 is rotated, two centrifugal forces act on the respective mass members 14a and 14b to cause friction between the friction cylinder 12 and the friction rings 15a and 15b, and the centrifugal load device is rotated. 10 causes a rotational load F on the driven gear 2, and this rotational load F is proportional to the rotational speed.

Next, the configuration of an embodiment of the position shift control device of the present invention will be described with reference to FIG. The drive control unit 20 having a relatively small displacement rotation width with a relatively small change in rotation speed based on the rotation principle described above comprises
And a power source provided by a single electric motor 22 serving as a driving source provided inside the main body 21 of the apparatus.
One end of 23 is rotatably supported by a bearing 24 provided at the bottom of the apparatus main body 21.One end of the rotating shaft 23 projects from the bottom of the apparatus main body 21 to supply necessary power to a driven device. It has become.

On the other end of the rotating shaft 23 of the electric motor 22, a large-diameter intermediate gear 25 and a small-diameter intermediate gear 26 that rotates integrally with the large-diameter intermediate gear 25 are rotatably provided. I have. Further, a driving gear 27 is fixed to the other end of the rotating shaft 23.

The rotating shaft is mounted on the upper part of the apparatus main body 21.
A control drive shaft 30 is rotatably supported by bearings 28 on the same axis as 23, and the upper end of the control drive shaft 30 projects from the upper part of the apparatus main body 21.

An axle 33 is mounted on the control drive shaft 30 so as to be positioned inside the apparatus main body 21. An upper end of the rotary shaft 23 is rotatably fitted on a lower surface of the axle 33. I have.
The other end of the balance spring 34 having one end fixed to the headstock 33 is connected to the apparatus main body 21. Also, this headstock
The driving gear 27 and the small-diameter intermediate gear 26
The driven gear 35 that meshes with the shaft shaft 33 is displaced from the center axis of the headstock 33.
It is provided rotatably on the shaft 36 at the position defined.

Further, a vertical fixed shaft 37 is provided in the device main body 21, and a load device 40 is provided on the fixed shaft 37. The load device 40 is rotatably supported by the fixed shaft 37 and is engaged with the large-diameter intermediate gear 25.
The load gear 41 includes a friction column 42 fixed to the center of the load gear 41 and a rotatable centrifugal force mechanism 43. The centrifugal force mechanism 43 has two sets of mass members 44a and 44.
b and friction rings 45a and 45b fitted to the friction cylinder 42
And the mass members 44a, 44b and the friction rings 45a, 45b
And connecting members 46a and 46b connecting the connecting members 46a and 46b. The connecting members 46a and 46b are provided with stoppers 47a and 47 protruding from the load gear 41.
The rotation is blocked by b.

Next, the operation of this embodiment will be described.

The driving gear 27 is rotated by the rotating shaft 23 which is rotated by the driving of the electric motor 22, and the driven gear 35 meshing with the driving gear 27 is rotated. The power is transmitted to the large-diameter intermediate gear 25 that rotates together, and the rotation of the large-diameter intermediate gear 25 causes the load device 40 to rotate.
Is rotated. By the rotation of the load gear 41, two centrifugal forces are applied to the respective mass members 44a and 44b to cause friction between the friction cylinder 12 and the friction rings 45a and 45b. F
And the rotational load F is proportional to the square of the rotational speed.

The headstock 33 corresponds to the link 3 in FIGS . 9 and 10 , and the load device 40 serves as a rotating load F of the driven gear 35, and the main driving gear 27 by the rotation of the rotating shaft 23 of the electric motor 22.
Bearing base 33 under conditions that resilience to balance the rotation load fluctuation of the rotational speed for the driven gear 35 F and the balance spring 34 is
And rotation control drive shaft 30 of the rotary shaft 23 coaxially centered motor 22
Is rotated.

As described above, when the rotational speed of the electric motor 22 is controlled by changing the resistance value of the variable resistor, for example, by increasing or decreasing the rotational speed of the driving gear 27, the headstock 33 rotates the rotation of the driving gear 27. occurs amount of rotation of rotation corresponding to the speed, control is being引動by rotation of the control drive shaft 30 which is positional displacement rotation of the bearing base 33 or linkage other controlled devices by rotation of the shaft base 33 I do.

Next, the structure of another embodiment of the displacement control apparatus of the present invention will be described with reference to FIGS.

The configuration of this embodiment is different from that of the embodiment shown in FIG. 1 in that a large-diameter intermediate gear 25 is used as a rotary plate 50,
The load plate 51 that rotates about the rotation shaft 23 is directly rotated by the rotation plate 50. This load device 51
The centrifugal force mechanism 53 has a friction ring 55 supported in the apparatus main body 21 by a support arm 54, and mass members 56a, 56b and mass members 56a, 56a, 56a, 56b, which contact the inner peripheral surface of the friction ring 55 by centrifugal force.
And support arms 57a and 57b for supporting the inner surface of the friction ring 55 so as to be able to come and go.
The support arms 57a and 57b are formed in a substantially L shape.
, 57b project from the lower surface of the rotary plate 50. The mass members 56a, 56b supported by the support arms 57a, 57b are held at symmetrical positions on a straight line passing through the rotating shaft 23.

Next, the operation of this embodiment will be described.

When the driven gear 27 is rotated by the drive of the electric motor 22, the driven gear 35 is rotated, and the rotational power of the driven gear 35 is transmitted to the rotating plate 50 which rotates integrally with the small-diameter intermediate gear 26.
Due to the rotation of the rotating plate 50, the mass members 56a,
56b is rotated. By the rotation of the rotating plate 50, two centrifugal forces are applied to the respective mass members 56a and 56b,
56a and 56b rub against the friction ring 55 to generate friction,
The centrifugal load device 51 generates a rotational load F on the driven gear 35, and the rotational load F is proportional to the rotational speed.

[0035] Then, the shaft base 33 is pivoted under conditions elasticity to balance rotational load F and balance spring 34 varies the rotational speed for the driven gear 35 of the main driving gear 27, the control drive shaft 30
It is rotating.

This displacement control device can change the running direction of a toy by, for example, interlocking a rotation direction control device with an interlocking mechanism connected to the control drive shaft 30 in an automobile toy. One end of the rotating shaft 23 of the electric motor 22 is connected to a wheel driving device of an automobile toy so that the toy can run.

Further, the position shift control device is not limited to toys, but is used for various machines that do not require high accuracy.
The present invention can be widely applied to device control, a tachometer, for example, a speedometer.

[0038]

According to the present invention, the control drive shaft by the change in the rotational speed of the drive source is rotating, the rotation angle and rotation amount obtained by a simple structure, not requiring a complicated control circuit Without
It does not require high precision and can be obtained at low cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a position shift control device showing one embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of a displacement control device showing another embodiment of the present invention.

FIG. 3 is a plan view of the load device.

FIG. 4 is a front view of the load device.

FIG. 5 is a diagram illustrating the principle of a position shift control device according to the present invention.

6 is an explanatory view of the principle of the rotation state of receiving ibid load.

FIG. 7 is an explanatory view of a principle in which a balance spring for maintaining load and balance is provided.

FIG. 8 is a principle explanatory view showing a state in which the elasticity of the balance spring and the load are balanced.

FIG. 9 is an explanatory view of the principle in which the above load device is provided.

[Figure 10] and elasticity of the load and balance spring of the same load device is a principle explanatory view of a state of holding the equilibrium.

FIG. 11 is a plan view of the load device.

FIG. 12 is a front view of the same.

FIG. 13 is a plan view of another load device of the above.

FIG. 14 is a front view of the same.

[Explanation of symbols]

22 Motor of drive source 23 Rotary shaft 25, 26 Intermediate gear 27 Main gear 30 Control drive shaft 33 Headstock 34 Balance spring 35 Driven gear 40, 51 Load device 41 Load gear 43, 53 Centrifugal force mechanism

Claims (3)

(57) [Claims] 1. A driving gear 27 which is rotated by the power of a driving source 22; and the driving force is located coaxially with a rotation shaft 23 of the driving gear 27.
A control drive provided rotatably with respect to the rotation shaft 23 of the gear 27.
A drive shaft 30 and a headstock 33 integrally provided with the control drive shaft 30 as a central axis.
The shaft is rotatable at a position deviated from the center axis of the headstock 33.
A driven gear 35 for supporting is meshed with the main driving gear 27, communicating with said driven gear 35 the rotational load on the driven gear 35
Resistance generated according to the rotation speed of the rotating member
Therefore, the load devices 40 and 51 that change according to the change in the rotation speed of the driving gear 27, and the shaft stand 33 are rotated around the control drive shaft 30 by the loads of the load devices 40 and 51. a balance spring 34 for urging in a direction opposite to the direction of movement, the main driving the balance spring 34 by changing the rotational load on the driven gear 35 of the load device 40, 51 by changing the rotational speed of the gear 27 positional displacement control apparatus according to claim to control the drive shaft 30 on the bearing base 33 under conditions resilient to equilibrium by changing the angle of rotation and the rotary shaft 23 on the same axis of the main driving gear 27. 2. The driving device according to claim 1, wherein the load devices for changing the rotational load of the driven gear receive the power of the drive source via the intermediate gears to the driven gear. Misalignment control device. 3. The load devices 40 and 51 are constituted by a load gear 41 rotated by rotation of the driven gear 35 and centrifugal force mechanisms 43 and 53 provided on the load gear 41. 2. The displacement control device according to 2.