JPH0774641B2 - Vane swing actuator - Google Patents

Description

The present invention relates to a vane type swing actuator.

[Prior Art] Since an oscillating actuator is often used with a fluid pressure device such as a fluid pressure cylinder, a chuck, or a valve attached to the output side, a shaft that rotates relative to the body and a mounting surface that faces the body are provided. Then, it is desirable to directly mount the output side device, with one as the fixed surface of the actuator and the other as the mounting surface for the output side device.

However, since the shaft of the known swing actuator penetrates the body, a coupling, a bearing and the like for mounting and supporting the output side device are required.

Further, the wiring and piping of the output side device exposed to the outside are oscillated by the oscillating actuator, which not only hinders the work but also causes an unexpected accident.

[Problems to be Solved by the Invention] A problem to be solved by the present invention is to provide a vane-type swing actuator in which an output-side device can be directly mounted and which has a space for inserting wiring or piping of the output-side device. To provide.

[Means for Solving the Problem] In order to solve the above-mentioned problems, a vane-type swing actuator according to the present invention is a vane-type swing actuator including a shaft and a body assembled so as to be rotatable relative to each other. A tubular portion for inserting wiring or piping of an output side device extending toward the body at the axial center portion, an annular concave portion defined by the tubular portion, a bottom wall and an outer wall, and a radial direction of the concave portion A vane integrally formed with these walls, and a mounting surface constituted by a surface of the bottom wall on the side opposite to the recessed portion, the body defining a stopper for defining the recessed portion, the shaft mounting surface and the back surface. It is characterized by having a facing mounting surface.

Further, in order to solve the same problem, a vane type swing actuator of the present invention is a vane type swing actuator provided with a shaft and a body assembled so as to be relatively rotatable, wherein the shaft has inner and outer walls and a bottom wall. The annular body has a ring-shaped concave portion, a vane integrally formed with these walls in the radial direction of the concave portion, and a mounting surface formed by a surface of the bottom wall opposite to the concave portion. It is provided with a stopper that defines the recessed portion, a tubular portion that extends toward the shaft in the shaft center portion for inserting wiring and piping of the output side device, and a mounting surface that faces the mounting surface of the shaft. It is characterized by

[Operation] Since the shaft and body assembled so that they can rotate relative to each other have mounting surfaces facing each other, one mounting surface can be used as a fixed surface and the output side device can be directly mounted on the other mounting surface. Therefore, the output device can be block-built.

In addition, since the wiring and piping of the output side device are not exposed to the outside by being inserted into the body or the tubular portion provided on the shaft, these do not interfere with the work and can make the appearance clean, and moreover, Since the tubular portion is provided in the axial center portion where the vane torque is small, the torque reduction due to the installation of the tubular portion can be reduced.

Further, since the vane is formed integrally with the recess, it has high strength and is easy to seal.

[Embodiment] FIG. 1 and FIG. 2 show a first embodiment of the present invention, in which a shaft 1 of this vane type swing actuator has a cup shape, and an axial center portion protruding from a mounting surface 4c of a body described later. An annular recess 2 formed by the cylindrical portion 1a and the outer wall 1b and having an opening in the axial direction; a mounting surface 1c orthogonal to the axis on the side opposite to the opening; The body 4 has a shaped vane 3, and the body 4 has a bottom wall 4a that covers the opening of the recess 2, a peripheral wall 4b that covers the outer periphery of the outer wall 1b, a mounting surface 4c that is orthogonal to the axis, and a bottom that defines the recess 2. A shaft hole having a wall 4a and a stopper 5 which is integral with the bottom wall 4a and through which the cylinder portion 1a passes.
4d is formed, and a seal packing 6 is attached to the end surface of the shaft 1 and the vane 3 on the body 4 side, and a seal packing 5a is attached to the outer surface of the stopper 5.

The shaft 1 and the body 4 are composed of a peripheral wall 4b and a bearing 8 installed between a bearing retainer 7 attached to the tip of the peripheral wall 4b by a fixing means such as a bolt (not shown).
The mounting surfaces 1c and 4c are set back-to-back, and the stopper 5 is inserted into the recess 2 so that they can be rotated relative to each other.
The mounting plate 9 is attached to the bolts 10 ,.

The recess 2 is divided into a pair of drive chambers 11a and 11b by the vane 3 and the stopper 5, and the body 4 is provided with ports 12 and 12 for supplying a pressure fluid to the drive chambers 11a and 11b.

The bearing 8 may be a cross roller bearing that receives forces in both radial and thrust directions.

In the first embodiment described above, since the mounting surfaces 1c and 4c face each other, one mounting surface serves as a fixed surface, and the output side device (not shown) can be directly mounted on the other mounting surface.
The output device can be block-built.

Further, since the wiring and piping necessary for the output side device can be inserted into the tubular portion 1a, not only the wiring and piping of the output side device do not interfere with the work, but also the appearance can be made clean. Moreover, since the tubular portion 1a is provided in the axial center portion of the shaft 1 where the torque of the vane 3 is small, the torque reduction of the swing actuator due to the shape of the tubular portion 1a can be reduced.

Further, both ends of the vane 3 in the radial direction are integrally formed with the tubular portion 1a.
And because it is supported by the outer wall 1b, the strength of the vane 3 is great,
Moreover, since there are few sealing parts, the sealing is easy.

Also, since the cylindrical portion 1a is projected from the mounting surface 4c of the body,
Not only can a load be attached to the cylindrical portion 1a, but also necessary parts such as an angle detection sensor and an angle adjusting device can be added.

In the first embodiment, one of the mounting surfaces is fixed and the drive chamber 11a,
When pressure fluid is supplied to 11b, the shaft 1 and the body 4 rotate relative to each other, and the output side device directly attached to the other attachment surface swings. In this case, even if a force in the axial direction of the output side device acts on the actuator, it can be countered by the acting force of the fluid pressure supplied to the drive chambers 11a and 11b.

3 and 4 show a second embodiment of the present invention, in which the cup-shaped shaft 14 of the vane type swing actuator is
An annular recess 2 defined by an inner wall 14a and an outer wall 14b on the axial center side, a mounting surface 14c that is orthogonal to the axial center on the side opposite to the opening of the recess 2, and is formed integrally with the recess 2 in the radial direction. The vane 3 and the inner wall 14a are provided with radial seal members 16 on the end surfaces of the inner wall 14a on the body 15 side. The body 15 covering the opening of the recess 2 faces the shaft 14 at the axial center. A cylindrical portion 15a extending in a vertical direction, a mounting surface 15b facing the mounting surface 14c and a mounting surface 15b facing the back, and a stopper 5 integrally formed are provided.

With respect to the shaft 14 and the body 15, the bearings 8 installed between the cylindrical body 15a and the bearing retainer 7 attached to the tip of the shaft 14 and the body 15 make the mounting surfaces 14c and 15b face back and the stopper 5 is inserted into the recess 2. The mounting plate 9 is mounted on the mounting surface 14c of the shaft 14 so as to be rotatable relative to each other.

Other configurations and operations of the second embodiment are the same as those of the first embodiment except that the cylindrical portion 15a does not project from the mounting surface 14c, and therefore, the same reference numerals are given to the main parts in the drawing. Detailed description is omitted.

[Effects of the Invention] In the vane type swing actuator of the present invention, the output side device is directly mounted on either one of the mounting surfaces by providing the shaft and the body which rotate relative to each other with the mounting surfaces facing each other. Therefore, the output side equipment can be easily installed and block building can be performed.

Also, by providing the shaft or body with a cylinder for inserting the wiring and piping of the output-side device, the wiring and piping of the output-side device are not exposed to the outside, so these interfere with the work. Moreover, since the tubular portion is provided at the shaft center of the actuator, the reduction in torque due to the shape of the tubular portion can be reduced.

Furthermore, by providing the vane integrally with the recess, both radial ends of the vane are supported by the wall surface of the recess, so that not only the vane is strong, but also the sealing is easy.

[Brief description of drawings]

1 is a vertical sectional front view of the first embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a vertical sectional front view of the second embodiment, and FIG. FIG. 1,14 …… Shaft, 1a, 15a …… Cylinder part, 1b, 14b …… Outer wall, 1c, 4c, 14c, 15b …… Mounting surface, 2 …… Recessed part, 3 …… Vane, 4,15 …… Body 5 ... Stopper, 14a ... Inner wall.

Claims (2)

[Claims] 1. A vane-type swing actuator comprising a shaft and a body assembled so as to be rotatable relative to each other, wherein the shaft inserts wiring or piping of an output-side device extending toward the body at an axial center portion. A tubular part for
An annular recess defined by the tubular portion, the bottom wall and the outer wall,
A vane integrally formed with these walls in the radial direction of the recess, and a mounting surface formed by a surface of the bottom wall opposite to the recess, the body defining the stopper, and the shaft. The vane-type swing actuator characterized in that it has a mounting surface and a mounting surface facing back. 2. A vane-type rocking actuator comprising a shaft and a body assembled so as to be rotatable relative to each other, wherein the shaft has an annular recess defined by inner and outer walls and a bottom wall, and a radial direction of the recess. A vane integrally formed with these walls and a mounting surface formed by a surface of the bottom wall opposite to the recess are provided, and the body defines a stopper defining the recess, and a shaft center portion facing the shaft. A vane-type swing actuator, comprising: a tubular portion for inserting wiring and piping of an output side device to be extended, and a mounting surface facing the mounting surface of the shaft and a back surface thereof.