JP2513170Y2 - Switch mounting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a switch mounting device for mounting a sensor switch for detecting a piston position of a cylinder on a peripheral surface of a cylinder tube (also referred to as a cylinder barrel).

2. Description of the Related Art Conventionally, a switch mounting device for mounting a sensor switch on the circumferential surface of a cylinder tube has been disclosed in
Some are disclosed in Japanese Patent No. 84105. According to this, a mounting groove having a large groove width is provided on the circumferential surface of the cylinder tube, and locked portions are provided on both sides of the mounting groove, and the switch body is fitted in the mounting groove to prevent the switch body from moving laterally. I am trying. In addition, the locking piece is fixed to the switch body, the locking bracket is fixed to the metal cover that is integral with the switch body, and the locking piece is locked in the mounting groove. Bring the tip of the screw into contact with the peripheral surface of the cylinder tube and tighten the mounting screw to pull up the locking piece, and the locking bracket presses and fixes the sensor switch against the peripheral surface of the cylinder tube by the reaction. It is like this.

However, in the above-mentioned conventional configuration, since the switch body is fitted in the mounting groove provided on the peripheral surface of the cylinder tube to prevent the switch body from moving laterally, Since the switch body is restricted to a size corresponding to the width of the mounting groove and the mounting groove having a large groove width is formed on the peripheral surface of the cylinder tube, there is a big problem that the strength of the cylinder tube is reduced. Also, since the locking piece is fixed to the switch body and the locking bracket is fixed to the metal cover that is integral with the switch body, when replacing the switch body, a large amount of mounting screws should be removed from the locking bracket. It is necessary to loosen and remove the locking piece from the mounting groove to remove the switch body from the peripheral surface of the cylinder tube, then lock the locking piece of the new switch body in the mounting groove and tighten the mounting screws in large quantities. There is a problem that the replacement operation takes a very long time. Also, since the locking piece and the locking bracket are separately formed and assembled to the switch body and the metal cover respectively, the manufacturing cost becomes high, and the locking side of the locking piece with respect to the direction of the switch is specified. There is a problem that the two mounting grooves for locking the locking pieces cannot be arbitrarily selected.

Means for Solving the Problems Therefore, the present invention is an inexpensive switch that can securely attach the sensor switch by abutting the sensor switch on the circumferential surface of the cylinder tube, and can easily replace the sensor switch and adjust the position. The purpose is to provide a mounting device.The cross-sectional shape of the mounting groove is formed into a hook shape that is bent at the bottom of the groove to the side opposite to the sensor switch mounting position side, and is locked to the groove edge of the mounting groove. Part is provided, and the shape of the locking part is formed into a hook shape that can fit in the mounting groove and bends in the same direction as the hook shape of the mounting groove, and the tip of the locking part is locked to the locked part. In this state, the base portion abuts the groove side surface of the mounting groove to prevent the mounting piece from rotating to the sensor switch mounting position side, and the locking piece is sandwiched between the mounting piece and extends to the sensor switch mounting position side. Touch the circumference of the cylinder tube. The sensor switch is attached to the upper surface of the cylinder switch, and the operating portion is provided to extend to the side opposite to the sensor switch mounting position by sandwiching the locking portion. It is characterized in that a mounting screw capable of abutting against is screwed.

Action With the mounting piece tilted so that the pressing part of the mounting piece separates from the upper surface of the sensor switch, the locking part is fitted into the mounting groove, and the mounting piece is erected to engage the locking part with the locked part. Stop, and then tighten the mounting screw to rotate the mounting piece to the sensor switch mounting position side, the pressing part of the mounting piece presses the upper surface of the sensor switch applied to the cylinder tube to move the sensor switch. Firmly fix to the cylinder tube. In this state, the base of the locking part comes into contact with the groove side surface of the mounting groove to prevent rotation of the mounting piece so that the locking part does not disengage from the locked part even if the mounting screw is slightly loosened. Therefore, even with one hand, the sensor switch can be replaced and the position can be adjusted easily and quickly. Further, since the mounting portion is provided with the locking portion and the pressing portion and the operating portion are provided on both sides, and the mounting screw is screwed into the operating portion, the configuration of the switch mounting device can be simplified.

Embodiment In FIGS. 1 and 2, reference numeral 1 denotes a rodless cylinder, the cylinder tube 2 of which has a substantially quadrangular cross section, and a cylinder chamber 3 is formed therein. A piston (not shown) is slidably fitted in the cylinder chamber 3, and a piston mount 4 slidably provided outside the cylinder tube 2 is connected to the piston. It reciprocates with a predetermined stroke in the axial direction as it slides. A pair of mounting grooves 6a, 6b are provided on the peripheral surfaces 2a, 2b, 2c of the cylinder tube 2 other than the peripheral surface on which the piston mount 4 slides, over substantially the entire axial length of the cylinder tube 2. The cross-sectional shapes of the pair of mounting grooves 6a and 6b are formed in a hook shape that is bent toward the side opposite to the sensor switch mounting position side at the groove bottom so that they become more distant from each other as they become deeper, and one side of the mounting grooves 6a and 6b (sensor Locked portions 7a and 7b are provided on the side opposite to the switch mounting position side). Reference numeral 8 denotes a sensor switch which is attached to a desired axial position on the peripheral surfaces 2a, 2b and 2c, and detects a magnet housed in a piston (not shown) to detect a stroke position of the piston. The sensor switch 8 is provided with an indicator 9 for displaying the operating state thereof to the outside, and a recess 10 into which a mounting piece 14 to be described later is fitted is provided on the outer periphery of substantially the central portion thereof. 11 is a lead wire. The sensor switch 8 is mounted on the peripheral surface by the switch mounting device 13.
It is installed on 2a. It should be noted that the peripheral surfaces 2b, 2c can be provided with auxiliary equipment such as a control valve for pressure fluid, a support, etc. through a fitting not shown by utilizing the pair of fitting grooves 6a, 6b.

Reference numeral 14 denotes a mounting piece, which is formed by cutting a molded product integrally extruded into a substantially L-shaped cross-section with aluminum or its alloy, and cut into a pair of mounting grooves 6a and 6b.
A locking portion 15 that can be locked to one side, a pressing portion 17 that can abut against the recess 10 of the sensor switch 8, and an operating portion 18 that extends in the locking portion 15 side direction with respect to the pressing portion 17. I have it. As shown in the drawing, the locking portion 15 is formed in a hook shape that is bent in the same shape as the sectional shape of the mounting grooves 6a and 6b, and the mounting piece 14 is not located at the sensor switch mounting position side around the locking portion 15. The mounting grooves 6a, 6b can be fitted by tilting to the opposite side. The locking portion 15 is locked when the mounting piece 14 is erected (rotated to the sensor switch mounting position side) around the locking portion 15 and the tip thereof is locked to the locked portion 7a. The base portion of the portion 15 is formed so as to abut the portion A on the groove side surface of the mounting groove 6a. The mounting piece 14 is provided with an inclined portion 19 that is inclined so as to move away from the peripheral surface 2a as it goes from the locking portion 15 to the operation portion 18, and the pressing portion 17 extends from the extending end of the pressing portion 17. An overhanging portion 21 that is bent at a right angle to is provided. The operation portion 18 is provided with a through hole 23 facing the peripheral surface 2a, and a screw portion is engraved on the inner surface thereof over the entire length.

As described above, in this embodiment, the through hole 23 is provided with a threaded portion and the operating portion 18 is integrally provided with a nut. It can be easily installed using only the members. Reference numeral 25 denotes a hexagon socket set screw exemplified as the mounting screw of the present invention, which is screwed into the threaded portion of the through hole 23 and the tip of which is in contact with the peripheral surface 2a.

 Next, the operation will be described.

The mounting piece 14 is tilted until its inclined portion 19 substantially abuts on the peripheral surface 2a so that the locking portion 15 is locked in the mounting groove 6a on any side, the sensor switch 8 is abutted on the peripheral surface 2a, and the recess is formed. Fit the mounting piece 14 onto the 10. Then, a hexagon socket set screw 25 is screwed into the threaded portion of the through hole 23, and the tip is
Abut on 2a and tighten further. Then, the tightening force causes the mounting piece 14 to move while rotating in a direction in which the pressing portion 17 approaches the peripheral surface 2a with the locked portion 7a as a fulcrum, so that the pressing portion 17 presses the sensor switch 8. Then, the sensor switch 8 is pressure-bonded to the peripheral surface 2a, and the locking portion 15 is pressure-bonded to the locked portion 7a and the portion A of the mounting groove 6a, so that the sensor switch 8 and the mounting piece 14 are firmly fixed. In this way, since the engaging portion 15 of the mounting piece 14 is crimped to the mounting groove 6a and the tip of the mounting screw is crimped to the peripheral surface 2a by its tightening force,
It is strong against an external force in the axial direction, and therefore, even if a large external force acts on the mounting piece 14 and the sensor switch 8 fitted to the mounting piece 14 in the recess 10, the positional deviation can be prevented. Further, when changing the mounting position of the sensor switch 8, it is sufficient to loosen the hexagon socket set screw 25 and move the mounting piece 14 while engaging the recess 10 of the sensor switch 8, so that the mounting position is simple and free. Can be changed. Even if the set screw 25 is slightly loosened as described above, the base portion of the locking portion 15 does not come into contact with the groove side surfaces of the mounting grooves 6a and 6b, and the locking portion 15 does not come off from the locked portion 7a.

Next, FIG. 3 shows another embodiment which is different, and the same parts are designated by the same reference numerals with the letter A added thereto. In FIG. 3, a hexagonal hole 26 is bored in the facing surface facing the peripheral surface 2a of the operating portion 18A as shown in FIG. 4, and a commercially available nut 27 is fitted into the hexagonal hole 26 to form a hexagonal hole. Set screw
25A is screwed onto the nut 27 and is in contact with the peripheral surface 2a.
In this embodiment, a nut is separately provided in the operating portion 18A so that its screw hole overlaps with the through hole 23A. Switch mounting device configured as described above
For 13A, if the hexagon socket set screw 25A is strongly tightened, the sensor switch 8A will rotate on the peripheral surface 2 by rotating the mounting piece 14A in the same manner as above.
Since it is crimped to aA, the locking part 15A is crimped to the mounting groove 6aA, and the tip of the hexagon socket set screw 25A is crimped to the peripheral surface 2a.
Can be firmly fixed.

As described above, according to the present invention, the mounting piece is rotated around the locking portion while the locking portion of the mounting piece is locked to the locked portion of the cylinder tube. Since the upper surface of the sensor switch applied to the peripheral surface is pressed and fixed by the pressing portion of the mounting piece, a commercially available sensor switch can be easily mounted on the peripheral surface of the cylinder tube in any direction. In addition, the mounting groove provided on the cylinder tube can be made smaller, and the decrease in strength of the cylinder tube can be suppressed. Further, since the pressing piece is pressed against the upper surface of the sensor switch by rotating the mounting piece, the pressing force acts on the corner portion of the relatively strong sensor switch, and the sensor switch can be prevented from being damaged by the pressing force. Also, when the mounting piece is erected and the locking portion is locked to the locked portion, the base of the locking portion abuts the groove side surface of the mounting groove, so even if the mounting screw is slightly loosened The stopper can be prevented from coming off the locked portion, and as a result, the sensor switch can be replaced and the position can be adjusted easily and quickly even with one hand. Moreover, since the mounting part has a locking part sandwiched between it, a pressing part and an operating part are provided on both sides, and a mounting screw is screwed into the operating part, so the mounting piece can be cut into a mold material for mass production, and the manufacturing cost of the device can be reduced. Has the advantage of being low.

[Brief description of drawings]

1 is a sectional view taken along the line I-I of FIG. 2, FIG. 2 is a front view, FIG. 3 is a sectional view of a different embodiment, and FIG. 4 is IV-IV of FIG.
It is a line sectional view. 2,2A …… Cylinder tube, 2a, 2b, 2c, 2aA …… Surface, 6
a, 6aA, 6b, 6bA ... Mounting groove, 8,8A ... Sensor switch, 1
3,13A …… Switch mounting device, 14,14A …… Mounting piece, 1
5,15A …… Locking part, 17,17A …… Pressing part, 18,18A …… Operating part, 23,23A …… Through hole

Claims (1)

(57) [Scope of utility model registration request] A mounting groove is formed on a circumferential surface of a cylinder tube in a longitudinal direction, and a locking portion of a mounting piece is locked in the mounting groove. The mounting piece presses a sensor switch on the circumferential surface of the cylinder tube. In the switch mounting device configured as described above, the sectional shape of the mounting groove is formed in a hook shape in which the groove bottom is bent to the side opposite to the sensor switch mounting position side, and the locked portion is provided at the groove edge of the mounting groove. Provided, the shape of the locking part is formed into a hook shape that can fit in the mounting groove and bends in the same direction as the hook shape of the mounting groove, and with its tip part locked to the locked part. The base is in contact with the groove side surface of the mounting groove to prevent the mounting piece from rotating to the sensor switch mounting position side. The mounting piece extends through the locking part to the sensor switch mounting position side and extends into the cylinder tube. Sensor switch applied to the peripheral surface A pressing part that can come into contact with the top surface is provided, and an operating part that extends across the locking part from the sensor switch mounting position side is provided, and the tip of this operating part can come into contact with the peripheral surface of the cylinder tube. A switch mounting device characterized by being screwed together.