JPH04317540A - Driver - Google Patents

Abstract

PURPOSE:To rotate a shaft at an arbitrary stroke position through a downsized structure by employing a through inner diameter type motor. CONSTITUTION:Rotary section 4 of a motor 3 is engaged through a cam follower 8 and a cam body 10 with one end 9a of a shaft 9. The shaft 9 penetrates through a through inner diameter type motor 17 and the outer rotor of the motor 17, i.e., a rotary body 15 mounted on a rotor 18, is engaged with a spline section 14. Upon rotation of the motor 3, the cam follower 8 rocks to move the cam body 10 in the direction of an arrow A and to move the shaft 9 simultaneously in same direction. Consequently, the shaft 9 moves with the gap D between a member 13 and a rotary body 15 being set at an arbitrary stroke position and thereby the shaft 9 functions as an actuator. Upon rotation of the through inner diameter type motor 17 under that state, the rotary body 15 and the shaft 9 move through the rotor 18.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a drive device, and in particular, a novel improvement for downsizing the shaft by rotating the shaft body at an arbitrary stroke position with a compact configuration by using an inner diameter penetrating motor. Regarding.

0002

2. Description of the Related Art There are various types of drive devices of this type that have been used in the past, and a typical one is shown in FIG. 2. In FIG. 2, the reference numeral 1 indicates a fixed body, and a first support plate 2 of this fixed body 1 is provided with a shaft-shaped motor 3. A rotating shaft 4 of the motor 3 is rotatably provided on a second support plate 5 provided on the fixed body 1 via a bearing 6, and a rotating shaft 4 is provided on the rotating shaft 4 via a cam plate 7. The cam follower 8 has a shaft body 9 that passes through the fixed body 1.
It engages with a cam body 10 provided at one end 9a of the cam body 10 via a bearing 11. The locking portion 10a of the cam body 10 is configured to slide in engagement with a groove 12a of a guide portion 12 provided at the upper end of the fixed body 1. A member 13 is provided at the other end 9b of the shaft body 9, and a spline portion 14 is formed.
7 is connected. Therefore, when the motor 3 is rotated and the cam follower 8 is oscillated, the cam body 10 moves in the direction of arrow A, and at the same time, the shaft body 9 also moves in the same direction. When the shaft 9 is stopped at an arbitrary stroke position and the motor 17 is rotated, the shaft 9 rotates at that position and can operate as an actuator.

0003

[Problems to be Solved by the Invention] Since the conventional drive device was constructed as described above, the following problems existed. That is, since the motor 17 for rotating the shaft body 9 was provided apart from the shaft body 9, the overall configuration was increased in size, and it was extremely difficult to meet the need for miniaturization.

The present invention has been made to solve the above-mentioned problems. In particular, by using an inner diameter penetrating motor, a shaft body can be rotated at any stroke position with a compact configuration. It is an object of the present invention to provide a drive device that is miniaturized.

[0005]

[Means for Solving the Problems] A drive device according to the present invention includes a motor provided on a fixed body, a shaft provided on the fixed body so as to be rotatably and axially movable, and a motor provided on one end of the shaft. a cam body provided in the rotating part of the motor and engaged with the cam body; a cam follower disposed coaxially with the shaft body and fixed to the fixed body; This configuration includes a rotary body provided in a mold motor and coaxial with the shaft body, and a spline portion that engages with the rotary body and is formed on the shaft body.

[0006]

[Operation] In the drive device according to the present invention, since the inner diameter penetrating type motor is coaxially disposed on the shaft body, when the shaft body is moved in any axial direction by swinging the cam follower, the inner diameter penetrating type When the motor is operated, the shaft body can be rotated at its stroke position, and the overall configuration can be significantly reduced in size.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the drive device according to the present invention will be described in detail below with reference to the drawings. Note that the same parts as in the conventional example will be described with the same reference numerals. FIG. 1 is a sectional view showing a drive device according to the present invention.

In the figure, the reference numeral 1 indicates a fixed body, and a first support plate 2 of this fixed body 1 is provided with a shaft-shaped motor 3. As shown in FIG.

The rotating part 4 of the motor 3 is connected to the fixed body 1
A cam follower 8 is provided rotatably through a bearing 6 on a second support plate 5 provided on the rotary part 4, and a cam follower 8 is provided on the rotating part 4 through a cam plate 7. A cam body 10 provided at one end 9a of 9 via a bearing 11.
is engaged in.

The locking portion 10a of the cam body 10 is configured to slide in engagement with a groove 12a of a guide portion 12 provided at the upper end of the fixed body 1. A member 13 is provided at the other end 9b of the shaft body 9, and a spline portion 14 is formed, and an inner diameter penetrating type having a through hole in the axis of an outer rotor type coaxially disposed on the spline portion 14. The rear end of the motor 17 is fixed to the fixed body 1.

The shaft body 9 passes through the inner diameter penetrating motor 17, and a rotating body 15 provided on a rotor 18, which is an outer rotor of the inner diameter penetrating motor 17, is engaged with the spline portion 14. There is.

In the above-described configuration, when the motor 3 is rotated and the cam follower 8 is oscillated, the cam body 10 moves in the direction of arrow A, and at the same time, the shaft body 9 also moves in the same direction. Therefore,
The distance D between the member 13 and the rotating body 15 is 15 to 180
The shaft body 9 can be moved to any stroke position within the range of mm to obtain an action as an actuator.

When the inner diameter penetrating motor 17 is rotated in the above-mentioned state, the rotating body 15 and the shaft body 9 are rotated through the rotor 18.
rotates. Note that the motor 3 may be a normal shaft type motor or an inner diameter penetrating type motor.

[0014]

[Effects of the Invention] Since the drive device according to the present invention is configured as described above, the inner diameter penetrating motor can be disposed coaxially with the shaft body, and the size can be significantly reduced compared to the conventional configuration. Furthermore, since it is an inner diameter penetrating type motor, a belt or the like is not required, and reliability can be improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a drive device according to the invention.

FIG. 2 is a sectional view showing a conventional drive device.

[Explanation of symbols]

1 Fixed body 3 Motor 4 Rotating part 8 Cam follower 9 Shaft body 9a One end 10 Cam body 14 Spline part 15 Rotating body 17 Inner diameter through-type motor

Claims (1)

[Claims] [Claim 1] A motor (3) provided on a fixed body (1).
), a shaft (9) rotatably and axially movably provided on the fixed body (1), and one end (9a) of the shaft (9).
A cam body (10) provided on the rotating part (4) of the motor (3) and a cam follower (8) that engages with the cam body (10), and a cam follower (8) coaxially disposed on the shaft body (9). an inner diameter penetrating motor (17) provided and fixed to the fixed body (1); a rotating body (15) provided on the inner diameter penetrating motor (17) and coaxial with the shaft body (9); a spline portion (14) formed on the shaft body (9) that engages with the rotating body (15), and a position where the shaft body (9) is moved in the axial direction by swinging of the cam follower (8); A drive device characterized in that the shaft body (9) is rotated by the inner diameter penetrating motor (17).