JP2575053Y2 - Cylinder 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 cylinder device such as a pneumatic cylinder, a hydraulic cylinder, and the like. The present invention relates to a cylinder device comprising:

[0002]

2. Description of the Related Art Conventionally, in various devices such as machine tools and industrial machines, cylinder devices such as pneumatic cylinders and hydraulic cylinders are frequently used, and are housed in cylinders on outer walls of the cylinders of the cylinder devices. 2. Description of the Related Art It is widely practiced to fix a position detector for detecting an operating position of a piston and control a device by a signal from the position detector.

Conventionally, in order to mount a position detector on a cylinder of a cylinder device, for example, as shown in FIG. 9, a detector mounting groove 13 is formed on an outer wall of a cylinder 11, and the detector mounting groove 13 is formed. The fixing screw 21 screwed to the mounting bracket 15 is rotated with the position detector 19 disposed inside the mounting bracket 15 while the projection 17 of the mounting bracket 15 having a U-shaped cross section is locked. This is performed by pressing the position detector 19 against the bottom surface 25 of the detector mounting groove 13 via the spacer 23 with the tip of the fixing screw 21.

[0004]

However, in such a conventional cylinder device, the pressing force acting on the upper surface of the position detector 19 due to the pressing of the fixing screw 21 is dispersed to protect the position detector 19. Since the spacer 23 is required, there is a problem that the number of components increases, mounting workability decreases, and manufacturing cost increases.

Further, the mounting bracket 1 covering the position detector 19 is provided.
5 needs to be arranged, so that a relatively large mounting bracket 1 is required.
5 is required, and it is difficult to mount the position detector 19 compactly. An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a cylinder device in which a position detector can be easily, quickly and compactly mounted.

[0006]

A cylinder device according to the present invention has a detector mounting groove formed on an outer wall of the cylinder along an axial direction of the cylinder, and the detector mounting groove is housed in the cylinder. In a cylinder device in which a position detector for detecting an operating position of a piston is fixed, a groove-side inclined surface inclined outward and inward is formed on both side surfaces of the detector mounting groove. The position detector and the fixing member are arranged in parallel inside the groove-side inclined surface of the mounting groove, and the fixing member is moved to the fixing member in a direction opposite to the bottom surface of the detector mounting groove by rotation. The fixing screw is screwed.

[0007]

In the cylinder device of the present invention, the fixing screw is turned in a state where the position detector and the fixing member are arranged in parallel in the detector mounting groove, and the fixing member is moved in the opposite direction to the bottom surface of the detector mounting groove. When the member moves to the position, the contact portion of the fixing member to the groove-side inclined surface slides along the groove-side inclined surface, whereby the fixing member moves to the position detector side, and the position detector moves to the other side groove. It is pressed by the side inclined surface, and is clamped and fixed between the groove-side inclined surface on the other side and the fixing member.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 and 2 show an embodiment of the cylinder device of the present invention. In the drawings, reference numeral 31 indicates a cylinder of a pneumatic cylinder device. The cylinder 31 has a rectangular cross section, and is formed by, for example, extruding an aluminum alloy.

A piston rod 33 is inserted into the center of the cylinder 31 in the axial direction, and the inserted end of the piston rod 33 is connected to a piston (not shown) housed in the cylinder 31. Further, supply / exhaust ports 35 and 37 are formed on one side surface of the cylinder 31.

An intake / exhaust port 3 is provided on the outer wall of the cylinder 31.
Except for the surfaces on which the cylinders 5 and 37 are formed, a detector mounting groove 39 is formed along the axial direction of the cylinder 31, and a piston (not shown) housed in the cylinder 31 is provided in the detector mounting groove 39 on the upper surface. Pair of position detectors 4 for detecting the operating position of
1 is fixed. In this embodiment, the position detector 41 is provided with, for example, a reed switch, and is configured to detect the position of the piston in response to a permanent magnet fixed to a piston (not shown).

The position detector 41 has a rectangular parallelepiped shape, and a lead wire 43 is connected to one end thereof.
In this embodiment, the detector mounting groove 39 is formed in a dovetail shape in which the bottom surface 45 is wide and both side surfaces are, for example, groove side inclined surfaces 47 having an inclination of 15 degrees. I have.

In the detector mounting groove 39, a position detector 41 and a fixing member 49 are arranged in parallel.
Fixing member 49, an aluminum case Kimua Rui made of synthetic resin, as shown in FIG. 3, on the opposite side of the upper abutment surface 51 to the position detector 41, the fixing member abuts against the groove side inclined surface 47 A side inclined surface 53 is formed.

A semicircular recess 57 is formed in the upper surface 55, and a through screw hole 59 is formed in the recess 57 toward the bottom surface 45 of the detector mounting groove 39. In the through screw hole 59, a fixing screw 6 that moves the fixing member 49 in the opposite direction to the bottom surface 45 of the detector mounting groove 39 by rotation.
1 is screwed. In this embodiment, in order to detect both stroke ends of the piston, a pair of position detectors 41 are accommodated in parallel in the detector mounting groove 39 with their positions shifted in the axial direction.

The position detector 4 in the detector mounting groove 39
The width x of the portion where the upper surface of 1 is located is as shown in FIG.
The width is slightly wider than twice the width y of the position detector 41. The width z of the upper surface of the fixing member 49 is the same as or slightly wider than the width y of the position detector 41, as shown in FIG. In the cylinder device configured as described above, the position detector 4 is inserted into the detector mounting groove 39 of the cylinder 31.
1 is mounted as described below.

That is, first, in the detector mounting groove 39,
The position detector 41 and the fixing member 49 are arranged in parallel. In this state, the fixing screw 61 is rotated by a driver or the like, and the tip of the fixing screw 61 projects toward the bottom surface 45 of the detector mounting groove 39 as shown in FIG. The mounting member 39 is moved in a direction opposite to the bottom surface 45, and the fixed member-side inclined surface 53 is slid along the one groove-side inclined surface 47.

Thus, the fixing member 49 is connected to the position detector 4.
1 and the position detector 41 is pressed by the contact surface 51 of the fixing member 49 against the groove-side inclined surface 47 on the other side, and between the groove-side inclined surface 47 on the other side and the fixing member 49. The position detector 41 is fixed to the detector mounting groove 39 by being sandwiched. Thus, in the cylinder device configured as described above, on both sides of the detector mounting groove 39, the groove-side inclined surface 47 that is inclined outward and inward is formed, and the detector mounting groove 39 is formed.
The position detector 41 and the fixing member 49 are arranged in parallel inside the groove side inclined surface 47 of
The rotation of the fixing member 49 causes the bottom surface 45 of the detector mounting groove 39 to rotate.
Since the fixing screw 61 which moves in the opposite direction is screwed, the position detector 41 can be easily, quickly and compactly attached to the cylinder 31.

That is, in the cylinder device configured as described above, in the state where the position detector 41 and the fixing member 49 are arranged in parallel in the detector mounting groove 39, the fixing screw 6 is fixed.
Since the position detector 41 can be fixed to the cylinder 31 simply by rotating the cylinder 1, the position detector 41 can be easily and quickly attached to the cylinder 31. Also, the fixing member 49
However, because it is very simple compared to conventional mounting brackets,
The position detector 41 can be attached to the cylinder 31 compactly.

Further, in the cylinder device configured as described above, the contact surface 51 of the fixing member 49 having a relatively large area is used.
Accordingly, since the position detector 41 is pressed, a spacer or the like becomes unnecessary, the number of components is reduced, and the manufacturing cost can be reduced. Further, in the conventional cylinder device, when the stroke of the piston is short, the pair of position detectors 41 interfere with each other. Therefore, it is necessary to accommodate each position detector 41 in another detector mounting groove. In the cylinder device configured as described above, the pair of position detectors 41 can be easily accommodated in parallel in one detector mounting groove 39, so that it is very difficult to confirm the operation of the position detector 41 or adjust the position. , And the maintainability can be improved.

Further, since a pair of position detectors 41 can be easily accommodated in parallel in one detector mounting groove 39 , a pair of lead wires are arranged in the same direction of one detector mounting groove 39. 43 can be pulled out, and the lead wire 43
Can be easily processed, and the appearance can be improved. Further, in this embodiment, since the concave portion 57 for accommodating the lead wire 43 is formed in the fixing member 49, it is easier to pull out the pair of lead wires 43 from the same direction.

FIGS. 6 and 7 show another embodiment of the present invention. In this embodiment, the detector mounting groove 65 has a rectangular cross section, and both side surfaces of the detector mounting groove 65 are provided. A groove-side inclined surface 67 that is inclined outward and inward at an angle of, for example, 45 degrees is formed on the opening side of the groove. At both ends of the upper surface of the fixing member 69, as shown in FIG. 8, a fixing member-side inclined surface 71, one of which is in contact with the groove-side inclined surface 67, is formed.

In the cylinder device configured as described above, the position detector 4 is inserted into the detector mounting groove 65 of the cylinder 31.
1 is mounted as described below. That is, first, the position detector 41 is inserted into the detector mounting groove 65.
And the fixing member 69 are arranged in parallel. In this state,
When the fixing screw 61 is rotated by a driver or the like and the tip of the fixing screw 61 projects toward the bottom surface 45 of the detector mounting groove 65 as shown in FIG. The fixing member-side inclined surface 71 is slid along the groove-side inclined surface 67 on one side.

As a result, the fixing member 69 is connected to the position detector 4.
1 and the position detector 41 is pressed by the contact surface 51 of the fixing member 69 against the groove-side inclined surface 67 on the other side, and between the groove-side inclined surface 67 on the other side and the fixing member 69. The position detector 41 is fixed to the detector mounting groove 65 by being sandwiched. Although substantially the same effects as those of the embodiment shown in FIG. 1 can be obtained in the cylinder device configured as described above, in this embodiment, the inclination angle of the groove-side inclined surface 67 is set to be equal to that of the above-described embodiment. Since the angle is set to 45 degrees with respect to 15 degrees, when the fixing member 69 is moved to the side opposite to the bottom surface 45, the amount of movement of the fixing member 69 toward the position detector 41 increases, and the fixing screw 61 is slightly turned. By simply moving the position detector 41, the position detector 41 can be securely fixed.

Further, as shown in FIG.
It is possible to easily form the fixing member-side inclined surfaces 71 symmetrically at both ends of the upper surface of the fixing member 69, the shape of the fixing member 69 becomes symmetrical, and when the fixing member 69 is inserted into the detector mounting groove 65, the fixing member 69 is fixed. It is not necessary to consider the directionality of the member 69, and the assembling property can be improved. In the embodiment described above, an example in which the present invention is applied to a pneumatic cylinder is described. However, the present invention is not limited to such an embodiment, and is similarly applied to a fluid cylinder such as a hydraulic cylinder. Of course, you can.

In the embodiment described above, an example is described in which a pair of position detectors 41 are disposed in one detector mounting groove 39, 65. However, the present invention is not limited to such an embodiment. However, it is needless to say that the present invention can be applied to a case where an integrated position detector 41 is arranged. Further, in the above-described embodiment, the example in which the fixing member-side inclined surface 71 is formed on the fixing members 49 and 69 has been described. However, the present invention is not limited to this embodiment, and the fixing member-side inclination surface is not necessarily required. Of course, it is not necessary to form a surface.

[0025]

As described above, in the cylinder device of the present invention, a groove-side inclined surface that is inclined outward and inward is formed on both sides of the detector mounting groove, and the detector mounting groove is A position detector and a fixing member are arranged in parallel inside the groove side inclined surface, and a fixing screw for moving the fixing member in a direction opposite to the bottom surface of the detector mounting groove by rotation is screwed into the fixing member. Therefore, there is an advantage that the position detector can be easily, quickly and compactly mounted on the cylinder.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a cylinder device of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a perspective view showing a fixing member of FIG. 1;

FIG. 4 is an explanatory diagram showing a dimensional relationship between a detector mounting groove and a position detector of FIG. 1;

FIG. 5 is an explanatory diagram showing a dimensional relationship between a fixing member and a position detector in FIG. 1;

FIG. 6 is a perspective view showing another embodiment of the cylinder device of the present invention.

FIG. 7 is a front view of FIG. 6;

8 is a perspective view showing the fixing member of FIG.

FIG. 9 is a side view showing a mounting portion of a conventional cylinder device for mounting a position detector on a cylinder.

[Explanation of symbols]

 31 Cylinder 39, 65 Detector mounting groove 41 Position detector 45 Bottom surface 47, 67 Groove side inclined surface 49 Fixing member 61 Fixing screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A detector mounting groove is formed on an outer wall of a cylinder along an axial direction of the cylinder.
In a cylinder device in which a position detector for detecting an operating position of a piston housed in a cylinder is fixed, a groove-side inclined surface that inclines outward and inward is formed on both side surfaces of the detector mounting groove. In addition, the position detector and the fixing member are arranged in parallel within the groove-side inclined surface of the detector mounting groove, and further, the fixing member is rotated by rotating the fixing member to the bottom surface of the detector mounting groove. A cylinder device comprising a fixing screw that moves in the opposite direction and is screwed together.