JP2570368Y2 - 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. 5, a detector mounting groove 13 is formed on an outer wall of a cylinder 11, and the detector mounting groove 13 is formed. The position detector 15 is inserted into the inside, and the position detector 15 is fixed by a set screw 17 at a predetermined position of the detector mounting groove 13.

In this case, the lead wire 19 of the position detector 15 is inserted through the detector mounting groove 13 and is drawn out from one end of the detector mounting groove 13.

[0005]

However, in such a conventional cylinder device, since the lead wire 19 of the position detector 15 is simply pulled out from one end of the detector mounting groove 13, the lead wire 19 is There is a problem that the edge may contact the edge 21 of the end of the detector mounting groove 13 to cause disconnection or the like.

That is, in recent cylinder devices, the size of the position detector 15 has been reduced, and at the same time, the lead wire 19 has become thinner and easier to break. In particular, as described above, from one end of the detector mounting groove 13 In the type in which the lead wire 19 is drawn out, the lead wire 19 may come into contact with the edge portion 21 at the end of the detector mounting groove 13 to cause disconnection or the like.

When the cylinder device itself is moved by another actuator, the lead wire 19
May come into contact with the edge portion 21 in a sliding state, so that the lead wire 19 is more easily broken, and furthermore, the lead wire 19 jumps out of the detector mounting groove 13, and the lead wire 19 may be caught by another device and broken. There was. An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a cylinder device capable of greatly reducing the risk of disconnection of a lead wire of a position detector as compared with the related art.

[0008]

According to a first aspect of the present invention, there is provided a cylinder device, wherein a detector mounting groove is formed on an outer wall of the cylinder along an axial direction of the cylinder, and both edges of the detector mounting groove on the opening side are formed.
A pair of protrusions are formed facing each other along
In the detector mounting groove , in a cylinder device in which a position detector for detecting an operating position of a piston housed in a cylinder is fixed, at least an end of the detector mounting groove,
A lead wire having a main body made of an elastic material and entirely inserted into the detector mounting groove, and a lead wire locking groove having an opening formed in a direction on the opening side of the detector mounting groove in the main body. with arranging the holding member, the lead wire retaining groove, said body portion expanded in diameter by inserting the lead wire, an inner surface and said the body portion and the detector mounting groove
It is formed by pressing and fixing to the inner surface of the projection .

[0009]

[0010]

[Action] In the cylinder apparatus according to claim 1, by a lead wire holding member which is arranged at the end of the detector mounting groove, the contact of the end of the detector mounting groove of the lead wire is prevented, also the detector mounting When the lead wire is inserted through the lead wire retaining groove of the lead wire holding member inserted into the groove, the main body is expanded in diameter, and the main body is pressed and fixed to the inner surface of the detector mounting groove.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 shows an embodiment of the cylinder device of the present invention. In the drawing, reference numeral 31 denotes 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.

Two detector mounting grooves 39 are formed on the upper and lower surfaces of the outer wall of the cylinder 31, respectively. These detector mounting grooves 39 are formed along the axial direction of the cylinder 31 and have a rectangular cross section. A pair of protruding portions 40 are formed facing each other along the detector mounting groove 39 on both sides on the opening side of the detector mounting groove 39.

In the detector mounting groove 39 on the left side of the upper surface of the cylinder 31, a position detector 41 for detecting the operating position of a piston (not shown) housed in the cylinder 31 is inserted. The position detector 41 includes a set screw 54
Thereby, it is fixed at a predetermined position in the detector mounting groove 39.

In this embodiment, the position detector 41
Has a reed switch, for example, 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 lead wire 43 of the position detector 41 is held at one end of the detector mounting groove 39, and the contact of the lead wire 43 with the end of the detector mounting groove 39 is prevented. A lead wire holding member 45 for prevention is provided. The lead wire holding member 45 is made of, for example, a soft elastic material such as resin or rubber, and has a main body 47 inserted into the detector mounting groove 39 and a main body 4 as shown in FIG.
7 has a lead wire locking groove 51 in which an opening 49 is formed in a direction on the opening side of the detector mounting groove 39.

In this embodiment, the diameter of the lead wire locking groove 51 is set so that the lead wire 43 is fixed.
Is formed to be slightly smaller than the outer diameter dimension. Also,
A pair of feet 53 is formed integrally with the main body 47 on the side opposite to the lead wire locking groove 51 at a predetermined interval. The outer diameters of the main body portion 47 and the foot portion 53 are set to fix the lead wire holding member 45 in the detector mounting groove 39.
The diameter is slightly larger than the diameter of the detector mounting groove 39.

In the cylinder device configured as described above, after the position detector 41 is inserted into the detector mounting groove 39, the position detector 41 is fixed at a predetermined position by a set screw 43, and thereafter, , Lead wire 43 of position detector 41
Is inserted from the opening 49 into the lead wire retaining groove 51 of the lead wire holding member 45 disposed along the detector mounting groove 39 and disposed at the end of the detector mounting groove 39, The wire 43 is supported and fixed by the lead wire holding member 45.

Thus, in the cylinder device configured as described above, the position detector 4 is provided at the end of the detector mounting groove 39.
Since the lead wire holding member 45 made of a soft material that holds the first lead wire 43 and prevents the lead wire 43 from contacting the end of the detector mounting groove 39 is disposed, the lead wire 43 of the position detector 41 The risk of disconnection can be greatly reduced as compared with the related art.

That is, in the cylinder device configured as described above, the lead wire 4 of the position detector 41 is moved by the lead wire holding member 45 arranged at the end of the detector mounting groove 39.
3 is securely held, so that it is possible to reliably prevent the lead wire 43 from contacting the edge of the end of the detector mounting groove 39 or the like, and when the lead wire 43 is thin or the cylinder 31 moves. In such a case, the lead wire 43
Can be greatly reduced compared to the conventional art.

Further, since the lead wire 43 is prevented from rising from the cylinder 31 by the lead wire holding member 45, the lead wire 43 does not get caught by other devices, and at the same time, the appearance can be improved. In the embodiment described above, since the lead wire holding member 45 is formed from an elastic material, the lead wire holding member 45 can be very easily fixed to the detector mounting groove 39. The lead wire 43 can be very easily inserted into the lead wire retaining groove 51 of the member 45.

FIG. 3 shows another embodiment of the present invention. In this embodiment, the outer diameters of the main body portion 47 and the foot portion 53 are formed to be slightly smaller than the diameter of the detector mounting groove 39. When the lead wire 43 is not inserted into the lead wire retaining groove 51, the lead wire 43 is movable along the detector mounting groove 39. The diameter of the lead wire retaining groove 51 is the same as that of the lead wire 4.
In order to fix the lead wire 43, the lead wire 43 is formed to be slightly smaller than the outer diameter of the lead wire 43. Further, as shown in FIG. The main body 45 is attached to the detector mounting groove 39
It is dimensioned to be pressed and fixed to the inner surface of the.

In the cylinder device constructed as described above, the lead wire holding member 45 is made of an elastic material and inserted into the detector mounting groove 39,
7 is formed from a lead wire locking groove 51 in which an opening 49 is formed in a direction on the opening side of the detector mounting groove 39 in
The main body 47 is enlarged in diameter by inserting the lead wire 43 into the lead wire retaining groove 51, and the main body 47 is pressed and fixed to the inner surface of the detector mounting groove 39.
The same effect as described above can be obtained.
In a state where 3 is not inserted into the lead wire retaining groove 51, the lead wire holding member 45 can be easily moved along the detector mounting groove 39.

That is, in the cylinder device configured as described above, when the lead wire holding member 45 does not insert the lead wire 43 into the lead wire retaining groove 39, the lead wire holding member 45 is movable along the detector mounting groove 39. Therefore, it is very easy to mount the lead wire holding member 45 in the detector mounting groove 39, and the lead wire holding member 45 is arranged not only at the end of the detector mounting groove 39 but also at an intermediate portion. By holding the lead wire 43 at this portion, it is possible to reliably prevent the lead wire 43 from rising even when the cylinder 31 is long.

In the above-described embodiment, an example in which the present invention is applied to a pneumatic cylinder has been described.
It is needless to say that the present invention is not limited to this embodiment, and can be similarly applied to a fluid cylinder such as a hydraulic cylinder.

[0026]

As described above, in the cylinder device of the first aspect, the lead wire of the position detector is held at the end of the detector mounting groove, and the lead wire is connected to the end of the detector mounting groove. Since the lead wire holding member made of a soft material for preventing contact is disposed, the risk of disconnection of the lead wire of the position detector can be significantly reduced as compared with the conventional case.

Further, leads the lead wire holding member, a main body portion that is inserted in the detector mounting groove of an elastic material, is formed of an opening in a direction in which the opening side of the detector mounting groove in the body portion formed of a line locking groove, the lead wire engaging the groove, the main body portion is expanded by inserting the lead wire. Thus presses and fixes the main body portion on the inner surface of the detector mounting groove, the lead There is an advantage that the lead wire holding member can be easily moved along the detector mounting groove when the wire is not inserted through the lead wire retaining groove.

[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 perspective view showing the lead wire holding member of FIG. 1;

FIG. 3 is a front view showing a main part of another embodiment of the cylinder device of the present invention.

FIG. 4 is an explanatory view showing a state when a lead wire is inserted into the lead wire holding member of FIG. 3;

FIG. 5 is a perspective view showing a conventional cylinder device.

[Explanation of symbols]

 31 Cylinder 39 Detector mounting groove 41 Position detector 43 Lead wire 45 Lead wire holding member 47 Main body 49 Opening 51 Lead wire locking groove

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, and the detector mounting groove is opened.
When forming a pair of protrusions facing each other along both edges on the mouth side
A cylinder device comprising a position detector for detecting an operating position of a piston housed in a cylinder fixed to the detector mounting groove, wherein at least an end of the detector mounting groove is made of an elastic material. A lead wire holding member having a main body portion entirely inserted into the detector mounting groove and a lead wire retaining groove having an opening formed in the main body portion in a direction on the opening side of the detector mounting groove is disposed. Along with the lead wire locking groove, the main body is expanded by inserting a lead wire, and the main body is pressed and fixed to the inner surface of the detector mounting groove and the inner surface of the protrusion. Characteristic cylinder device.