JPH056401Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a swing motor that converts fluid pressure into rotational motion of a shaft. The present invention relates to a swing motor with a stopper mechanism that allows for a stopper mechanism.

[Prior Art] Conventionally, a swing motor with a stopper mechanism in which the rotation range of the shaft can be adjusted by a stopper mechanism is known, for example, as disclosed in Japanese Patent Application Laid-Open No. 61-96205. This is achieved by attaching a disk to the free end of the shaft protruding from the casing of the rocking motor, attaching the stopper body to a long arc-shaped hole cut into the disk so that the angle can be adjusted freely, and reacting when the stopper body comes into contact with the disk. A stopper is formed in the casing, and the rotation angle of the shaft is determined by the contact of the stopper body with the reaction stopper.

However, in such a conventional swing motor, the stopper body is composed of two members located on the upper surface side and the lower surface side of the disk, and these members are connected to the hole edge of the elongated hole by tightening screws. Therefore, when the screws are loosened to adjust the angle, both members tend to unnecessarily wobble or rotate in irregular directions. Not only is it difficult to move the stopper body smoothly, but when fixing both members after positioning, it is necessary to tighten the screws after aligning the orientation and posture of each member, and the angle adjustment action is troublesome. It was hot. Moreover,
When loosening or tightening the screws that fix the stopper body, a large pressing force is applied through the screws to a position away from the center of the disk, which may cause the disk to tilt or deform. Therefore, it is not preferable to attach a stopper body that requires angle adjustment to a member (disc) on the shaft side.

[Problems to be solved by the invention] The problem of the invention is to construct the stopper block for setting the rotation angle of the shaft from a single member and to attach it to the body side of the swing motor, thereby making it easy to adjust the angle. The purpose is to adjust the angle of the shaft and adjust the angle regardless of the shaft.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a structure in which the free end of the shaft protrudes at the end of the body of a swing motor that converts fluid pressure into rotational motion of the shaft. , a stopper ring having a partition wall is attached, an arc-shaped elongated hole whose curvature center is the axis of the shaft is cut in the partition wall of the stopper ring, and an abutment portion located on the lower surface of the partition wall is inserted into the elongated hole. A stopper block integrally provided with a protruding portion projecting from the elongated hole to the upper surface of the partition wall is attached along the elongated hole so as to be adjustable in angle, and the shaft is provided with an abutting portion corresponding to the abutting portion of the stopper block. It is characterized by the attachment of a stopper lever.

[Operation] The rotation of the shaft of the swing motor is regulated at the position where the contact portion of the stopper lever fixed thereto contacts the stopper block, thereby setting the rotation angle.

The rotation angle can be adjusted by moving the stopper block along the long hole,
At that time, by grasping the protruding part of the stopper block that protrudes from the upper surface of the partition wall, the stopper block can be moved without rotation or rattling, and there is no need to correct the posture of the stopper block after movement. Because there is no such thing, the angle adjustment work is very easy.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 and 2, 1 is a vane-type swing motor that converts fluid pressure into rotational motion of a shaft 2, and 3 is the body of the swing motor 1.
A stopper ring 4 having a partition wall 5 is attached to the end of the body 3 on the side from which the free end of the shaft 2 projects, with a screw 4a. A pair of arcuate long holes 6, 6 having centers of curvature are cut at symmetrical positions. And in the long hole 6,
As can be seen from FIG. 3, at least one stopper block 7 integrally includes an abutment portion 7a located on the lower surface of the partition wall 5 and a protrusion portion 7b projecting from the elongated hole 6 to the upper surface of the partition wall 5. It is attached along the elongated hole 6 so that the angle can be freely adjusted. The protruding portion 7b of the stopper block 7 serves as a gripping portion when adjusting the angle, and also serves as a gripping portion when adjusting the angle.
It also serves as a positioning means to restrict unnecessary rotation of the stopper block 7.By grasping this projection 7b and moving the stopper block 7, the stopper block 7 can be easily moved while accurately maintaining its posture in a predetermined direction. It has become possible to do so. Note that 9 is a block presser.

On the other hand, as is clear from FIGS. 1 and 4, the shaft 2 of the swing motor 1 has a stopper lever 10 provided with a contact portion 10a corresponding to the contact portion 7a of the stopper block 7. The chamfered portion of the shaft 2 is sandwiched between the screws 11 and the shaft 2, and is fixed with screws 12. A shaft portion 10b having a mounting hole 13 is formed in the upper part of the stopper lever 10, and the upper end of the shaft portion 10b is fitted into a center hole 14 formed in the partition wall 5 of the stopper ring 4. The part protruding from the upper surface of the partition wall 5 at the upper end is a substantially rectangular spanner hook 10c.
This wrench hook 10c is used during inspection etc.
It is now possible to manually operate the load using the

The stopper ring 4 has a plurality of screw holes 15 formed in its end face, and a cover 16 is removably attached by inserting protrusions 16a into the screw holes 15.

In the swing motor 1 having the above configuration, the rotation of the shaft 2 is caused by the abutment portion 10a of the stopper lever 10 fixed thereto being connected to the stopper block 7.
It is regulated at the position where it abuts against the abutting portion 7a, thereby setting its rotation angle.

The above rotation angle can be adjusted by loosening the screw 8 fixing the stopper block 7 and moving the stopper block 7 along the long hole 6.
It can be adjusted arbitrarily within the range of degrees. At that time, by grasping the protrusion 7b of the stopper block 7 that protrudes from the upper surface of the partition wall 5, the stopper block 7 can be moved without rotation or rattling, making the angle adjustment work very easy. Moreover, since there is no need to take the trouble to correct the direction of the stopper block 7 when tightening the screw 8, its fixation is also easy.

As shown in FIG. 5, the swing motor 1 includes:
A rotational position detection device 20 for detecting the rotational position of the shaft 2 can be attached using the stopper mechanism described above. That is, the connecting rod 21 is inserted into the mounting hole 13 in the shaft portion 10b of the stopper lever 10.
is fitted and fixed, and a magnet 22 is attached to the upper end of the connecting rod 21 via a mounting member 23. On the other hand, a magnet cover is provided on the end surface of the stopper ring 4 to cover the magnet 22 in a sealed state. 24 is the screw 25 screwed into the screw hole 15
A sensor mounting block 26 is attached to the outer surface of the magnetic cover 24 with screws 27, and a magnetic sensor 28 sensitive to the magnet 22 is fixed to the sensor mounting block 26. The screw 27 that fixes the sensor mounting block 26 is screwed into a nut 30 that is movably disposed in a groove 29 that opens around the entire side surface of the magnetic cover 24.
By loosening the screw 27, the position of the sensor mounting block 26 can be adjusted in the circumferential direction.

Thus, the swing motor 1 equipped with the rotational position detection device 20 can detect the rotational position of the shaft 2 using the magnet 22 and the magnetic sensor 28. In addition, if the rotational position detection device 20 is not required, the magnetic cover 24 and the connecting rod 2
By removing 1, the state shown in FIG. 1 can be easily restored.

In the above embodiment, the present invention is applied to a vane type swing motor, but the present invention is not limited to a vane type swing motor, and can be applied to other types of swing motors such as rack and pinion type and crank type. Of course, the present invention can be applied to dynamic motors.

[Effects of the invention] According to the invention having the above configuration, the stopper block is configured as a single member integrally equipped with a contact portion located on the lower surface of the elongated hole and a protruding portion protruding from the upper surface of the elongated hole. Therefore, when adjusting the angle,
By grasping and moving the protrusion that engages with the elongated hole, the stopper block can be moved smoothly without rotation or rattling, and the posture and orientation of the stopper block can be changed after movement. Since the screws can be tightened without adjusting the screws, the angle adjustment work is very easy. Also, since the stopper block is attached to the stopper ring fixed on the body of the swing motor, the angle adjustment is easy. This can be done independently of the shaft, and therefore, as in the case where the stopper ring is attached to a member attached to the shaft, the actuating force during angle adjustment may cause the member to tilt or deform. There is no.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the main parts of an embodiment of the present invention, Figure 2
The figure is a plan view with the cover removed.
The figure is an enlarged sectional view taken along the line A--A in FIG. 2, FIG. 4 is a plan view of FIG. 1 with the stopper ring removed, and FIG. 5 is a sectional view of a main part showing a different method of use. DESCRIPTION OF SYMBOLS 1... Swing motor, 2... Shaft, 3... Body, 4... Stopper ring, 5... Bulkhead, 6...
...Elongated hole, 7...Stopper lock, 7a...Abutment part, 7b...Protrusion part, 10...Stopper lever,
10a...Abutment part.

Claims (1)

[Scope of utility model registration request] A stopper ring having a partition wall is attached to the end of the body of the rocking motor that exchanges fluid pressure into rotational movement of the shaft, on the side from which the free end of the shaft projects, and the partition wall of the stopper ring is provided with a curvature of the axis of the shaft. A long hole in the shape of an arc at the center is cut, and a stopper block integrally provided with a contact portion located on the lower surface of the partition wall and a protrusion portion protruding from the long hole to the upper surface of the partition wall is attached to the long hole. 1. A swing motor with a stopper mechanism, characterized in that a stopper lever is attached to the shaft so as to be adjustable in angle along the shaft, and a stopper lever is attached to the shaft.