JPH075363Y2 - Position detection sensor mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a mounting structure for a position detecting sensor, and more particularly to a technique effectively applied to a position detecting sensor for fluid pressure equipment.

[Conventional technology]

For example, as a mounting structure for a position detection sensor, a mounting band or a tightening screw that is wound around the outer peripheral surface of a detected device such as a cylinder is provided, and the mounting band is attached to the outer peripheral surface of the detected device by tightening the tightening screw. There is a structure in which the sensor body is tightened and pressed against the outer peripheral surface to be fixed.

Further, there is a structure in which a sensor mounting groove formed on the outer peripheral side of the device to be detected, a set screw, and the like are provided, and the sensor main body is fixed to the groove mounted by tightening the set screw or the like.

On the other hand, in such a sensor mounting structure, the wiring is extended from the sensor body to the outside, and the wiring is connected to the external wiring.

[Problems to be solved by the device]

However, since the above-described structure for mounting the position detecting sensor has a structure in which the sensor main body is mounted on the device to be detected by the screw tightening means, the mounting work of the sensor main body is complicated.

On the other hand, in the above-mentioned sensor main body, the wiring extends from the sensor main body to the outside, so that the presence of the wiring enlarges the sensor main body.

In addition, the wiring of the sensor body clutterly extends to the outer peripheral side of the detected device in an unstable floating state.

An object of the present invention is to provide a mounting structure for a position detecting sensor that can improve the workability of mounting the sensor body, downsize the sensor body, and simplify the wiring of the sensor body.

[Means for Solving the Problems]

The position detecting sensor mounting structure of the present invention detects the position of a piston that is slidably accommodated in the axial direction of the cylinder body. A mounting groove into which the main body can be inserted is formed, and a wiring portion electrically connected to a connector portion for external connection provided on the cylinder main body is axially arranged on the bottom surface of the mounting groove. The main body is provided with a connecting terminal that contacts the wiring portion and an arm that extends along one side surface of the sensor main body. Between the sensor main body and the arm, the space between the sensor main body and the arm is expanded to expand the sensor main body. The expansion means is provided for fixing the tongue at any position of the mounting groove.

[Action]

According to the mounting structure for the position detecting sensor described above, the wiring is extended by displacing the expanding means to expand the space between the sensor body and the arm to fix the sensor body in the mounting groove of the cylinder body. Only the main body of the sensor, which is not a box, can be mounted at any position in the mounting groove.

Further, according to the above-described mounting structure of the position detecting sensor,
Since the connecting terminal is provided on the sensor body and the wiring portion that comes into contact with the connecting terminal is provided on the cylinder body, the wiring extending from the sensor body to the outside is removed. The size of the sensor body can be reduced.

Further, since the wiring of the sensor body does not clutterly extend to the outer peripheral side of the cylinder body in an unstable floating state, the wiring of the sensor body can be simplified.

[Embodiment 1] FIG. 1 is a plan view showing a mounting structure of a position detecting sensor which is an embodiment of the present invention, FIG. 2 is a partial cross-sectional view taken along the line II of FIG. 1, and FIG. Is a sectional view taken along the line II-II in FIG. 1, FIG. 4 is a side view showing the mounting structure of the position detecting sensor of FIG. 1, and FIG. 5 is used for the mounting structure of the position detecting sensor of FIG. It is a perspective view which shows the connector part currently formed.

The mounting structure of the position detecting sensor in the present embodiment has a cylinder device 6 as a device to be detected and the cylinder device 6
And a pair of sensor bodies 5 attached to the sensor body 5 for detecting the position of the piston 8.

As shown in FIG. 3, the cylinder chamber in the cylinder body 7 of the cylinder device 6 is partitioned by a piston 8 into a left cylinder chamber 9a and a right cylinder chamber 9b.

A piston rod 8a is projected from one end surface of the piston 8, and a magnet 8b for detection is fitted on the outer peripheral portion of the piston 8.

The left cylinder chamber 9a communicates with the supply / discharge port 10a (shown in FIG. 1), and the right cylinder chamber 9b communicates with the supply / discharge port 10b.

A mounting groove 11 for mounting the sensor main body extends along the axial direction on the outer peripheral portion of the cylinder main body 7 of the cylinder device 6.

The opening of the mounting groove 11 is detachably covered with a transparent cover 11a, and a conductive layer 12 (wiring portion) is printed on the bottom surface of the mounting groove 11 and extends in the longitudinal direction.

As shown in FIG. 1, in the sensor body 5, an arm 5a extends from one side surface of the sensor body 5 at a predetermined distance from the one side surface, and between the one side surface and the inner side surface of the arm 5a. A cylindrical eccentric cam 13 (expansion means) is rotatably provided.

The eccentric cam 13 has a driver groove 13a formed in its head, and can be rotated using the driver groove 13a.

Further, the eccentric cam 13 is formed such that the small diameter portion 13b is eccentric from the upper and lower large diameter portions 13c.

On the other hand, fitting grooves 5c and 5d are formed on one side surface of the sensor body 5 and on the upper and lower portions of the inner surface of the arm 5a.
The large diameter portions 13c of the eccentric cams 13 are fitted in the 5d, respectively.

In the eccentric cam 13, a part of the outer peripheral portion of the large diameter portion 13c is fitted with the fitting grooves 5c and 5d.
The large diameter part 13c
Is rotated about the axis of the rotation axis, and the small diameter part
13b is eccentrically rotated with respect to the large diameter portion 13c.

When the small-diameter portion 13b is separated from one side surface of the sensor body 5 by the eccentric rotation and displaced toward the arm 5a side, the arm
5a is expanded outward against its elastic force, and the sensor body 5
The other side surface and the outer surface of the arm 5a are pressed against both inner side surfaces of the mounting groove 11, respectively, so that the sensor body 5 is easily and surely fixed to the mounting groove 11.

As shown in FIG. 2, connection terminals 5b each having a hook-shaped cross section are provided on both ends of the sensor body 5 in the axial direction, and the bottom surface of each connection terminal 5b has a predetermined conductive layer of the mounting groove 11. 12 are contacted with each other to be electrically connected.

In this case, when the sensor main body 5 is fixed to the mounting groove 11 as described above, the sloped portion 5e at one end of the bottom of the sensor main body 5 is pressed against the sloped portion 11b at one end of the bottom of the mounting groove 11 to be pushed down, The bottom of the connection terminal 5b is the mounting groove 11
The conductive layer 12 is pressed into contact with the conductive layer 12 for reliable electrical connection.

In this embodiment, the external piping of the cylinder device 6 and the external wiring of the sensor body 5 are designed to be performed by a single connector section 1 shown in FIG.

The connector part 1 includes a plurality of flexible tubes 2 through which fluid is circulated.
And a conductive layer 3 extending on the outer peripheral surface of the tube 2 along the longitudinal direction, and a flexible insulating cover 4 covering the outer peripheral surface of the conductive layer 3.

The plurality of tubes 2 are arranged in an axially parallel manner, and the entire outer peripheral side thereof is covered with an insulating cover 4 to be joined.

The tube 2 and the insulating cover 4 are each formed of, for example, an elastic body, and the conductive layer 3 is formed by printing on both sides of the outer peripheral surface of the tube 2.

As shown in FIG. 3, the cylinder body 7 of the cylinder device 6 is
A cutout portion 7a is formed on the right end side of, and a pipe attaching / detaching member 14 is provided in the cutout portion 7a.

A releasing member 15 is fitted to the opening side of the hole 14a of the pipe attaching / detaching member 14 so as to be displaceable in the axial direction, and the inserting member 15 has an insertion hole 15a in the axial direction. Have been penetrated.

A plurality of retaining claws 16 made of an elastic body are arranged in the middle of the hole 14a, and the retaining claws 16 are pressed against the outer peripheral surface of each tube 2 by its elastic force, so that the connector portion 1 can be reliably removed. It is supposed to be prevented.

On the other hand, by further pushing the release member 15 from the state shown in FIG. 3 to push down the retaining claws 16 to release the pressure contact state between the retaining claws 16 and the respective tubes 2, the prevention of the connector portion 1 coming out is released. It is supposed to be done.

The retaining claws 16 are arranged so as not to contact the conductive layer 3 of each tube 2.

A tubular member 17 is provided on the bottom side of the hole 14a.

Inside the cylindrical member 17, connecting tubes 17a are arranged in parallel in a direction perpendicular to the paper surface of FIG. 3, and supply / discharge ports 10a and 10b are formed by the openings of the connecting tubes 17a, respectively.

A pair of connection terminals 18 electrically connected to the conductive layer 12 are provided on the outer peripheral side of each connection cylinder 17a, and the pipe 2 of the connector portion 1 is connected to each connection cylinder 17a as shown in FIG. By inserting, the conductive layer 3 of the tube 2 (the conductive layer 3 exposed by peeling of the insulating cover 4) is electrically connected to the connecting terminals 18, respectively.

As shown in FIG. 4, on the right side surface of the pipe attaching / detaching member 14,
A light emitting diode 19 that is electrically connected to the sensor body 5 via a predetermined connection terminal 18 and a conductive layer 12 is built in, and the ON / OFF state of the switch of the sensor body 5 blinks the light emitting diode 19. Each can be surely visually confirmed.

Next, the operation of this embodiment will be described.

For example, in this embodiment, the sensor main body 5 is attached to the cylinder device 6 as follows.

First, as shown in FIG. 1, the sensor main body 5 (the sensor main body 5 in which the eccentric cam 13 is provided at a predetermined portion between one side surface of the sensor main body 5 and the inner side surface of the arm 5a) is attached to the mounting groove.
Located within 11.

Then, a driver (not shown) or the like is inserted into the driver groove 13a to rotate the eccentric cam 13.

The eccentric cam 13 is rotated about the axis of the large diameter portion 13c as a rotation shaft, and the small diameter portion 13b is eccentrically rotated with respect to the large diameter portion 13c.

The small-diameter portion 13b is separated from one side surface of the sensor body 5 by the eccentric rotation, and is displaced toward the arm 5a side while pressing the middle portion of the inner side surface of the arm 5a so as to be displaced toward the arm 5a side.
Is expanded outward against its elastic force, and the other side surface of the sensor body 5 and the outer side surface of the arm 5a are pressed against both inner side surfaces of the mounting groove 11, respectively.

The sensor body 5 is securely fixed to the mounting groove 11 by its pressing contact.

Therefore, according to the present embodiment, the sensor body 5 can be easily and reliably fixed to the cylinder device 6 by the turning operation of the eccentric cam 13.

Further, in the present embodiment, the mounting groove of the sensor body 5 is
When fixed to 11, the sloped part 5e of the sensor body 5 is installed in the mounting groove.
By being pressed against the slope 11b of 11 and pushed down,
Since the bottom surface of the connection terminal 5b of the sensor body 5 is pressed into contact with the conductive layer 12 of the mounting groove 11 to be surely contacted and electrically connected, the sensor body 5 and the conductive layer are fixed only by the fixing operation of the sensor body 5 described above. The electrical connection with 12 can be made reliably and easily.

Further, since the wiring is not extended outward from the sensor main body 5, the sensor main body 5 can be downsized, and such wiring is unstable on the outer peripheral side of the cylinder device 6 in a floating state. Therefore, it is possible to simplify the wiring of the sensor main body 5 since it does not extend in a cluttered manner.

Next, when detaching the sensor body 5 from the cylinder device 6, for example, it is performed as follows.

First, a driver (not shown) or the like is inserted into the driver groove 13a to rotate the eccentric cam 13 in the opposite direction.

Due to the rotation of the eccentric cam 13, the small diameter portion 13b displaced to the arm 5a side is displaced to one side surface side of the sensor main body 5 by the eccentric rotation and abuts against the one side surface. Then, the expanded arm 5a is narrowed inward by its elastic force, and the pressing state of the other side surface of the sensor body 5 and the outer side surface of the arm 5a and both inner side surfaces of the mounting groove 11 is released. It

The sensor body 5 is attached to the mounting groove by releasing the pressed state.
It can be removed from 11.

At the same time, the connection state between the connection terminal 5b of the sensor body 5 and the conductive layer 12 of the mounting groove 11 can be released.

Therefore, according to the present embodiment, it is possible to easily and simultaneously remove the sensor body 5 from the mounting groove 11 and release the electrically connected state between the connection terminal 5b of the sensor body 5 and the conductive layer 12 of the mounting groove 11. Can be done.

Further, according to the present embodiment, as described above, the eccentric cam 13
Sensor body 5 without separating the sensor body 5 from the sensor body 5.
Since it can be attached to and removed from the cylinder device 6, workability of this kind can be facilitated also from this point.

[Embodiment 2] FIG. 6 is a plan view showing a modification of the sensor body used in the mounting structure for the position detecting sensor shown in FIG. 1, and FIG. 7 is a side view of the sensor body shown in FIG.

In the sensor body 5 of the second embodiment, a quadrangular prism-shaped slide cam 20 (expansion means) is provided between one side surface and the inner side surface of the arm 5a so as to be slidable along the axial direction.

An inclined wall 20a is formed on one side surface of the slide cam 20,
The tip side of the arm 5a is slidably fitted in the inclined groove 20a.

Then, by sliding the slide cam 20 toward the base end side of the arm 5a from the state of FIG. 6 to displace the inclined groove 20a,
The arm 5a is expanded outward against its elastic force, and the outer surfaces of the sensor body 5 and the arm 5a are pressed against both inner side surfaces of the mounting groove 11, respectively. It has a structure that can be easily and surely fixed to.

The wiring 21 extends outward from the sensor body 5 in this embodiment.

Although the present invention has been specifically described based on the embodiments, the present invention is not limited to the first and second embodiments, and various modifications can be made without departing from the scope of the invention.

For example, the expanding means in Embodiments 1 and 2 is the eccentric cam 1
3, the slide cam 20 is used, but the expanding means in the present invention is not limited to the eccentric cam 13 and the slide cam 20.

The cylinder device 6 which is an example of a fluid pressure operating device is applied to the detected devices in the first and second embodiments.
The detected device of the present invention is not limited to the application of such a cylinder device, but can be widely applied to, for example, rotary actuators and the like.

[Effect of device]

According to the mounting structure of the position detecting sensor of the present invention, the following effects can be obtained.

(1). By displacing the expansion means to push and expand between the sensor body and the arm and fixing the sensor body in the mounting groove of the cylinder body, only the sensor body as a box body in which wiring is not extended is installed in the mounting groove. It becomes possible to mount it at any position.

(2). Therefore, the sensor body can be attached to a desired position of the cylinder body without being bothered by wiring, and the efficiency of the attachment work of the sensor body can be improved.

(3). By arranging the connection terminal on the sensor body and forming the wiring portion that contacts the connection terminal on the cylinder body, the wiring from the sensor body can be removed, so that the sensor body can be downsized. be able to.

(4). Since the wiring of the sensor body does not clutterly extend to the outer peripheral side of the cylinder body in an unstable floating state,
Wiring can be simplified.

(5). Due to the effect of (4) described above, it is possible to achieve space saving of wiring.

(6). Further, when the expanding means is a slide cam, the sensor body can be attached and detached without using a tool such as a driver.

[Brief description of drawings]

FIG. 1 is a plan view showing a mounting structure of a position detecting sensor according to an embodiment of the present invention, FIG. 2 is a partial sectional view taken along the line I--I of FIG. 1, and FIG. 3 is shown in FIG. A sectional view taken along line II-II, FIG. 4 is a side view showing the mounting structure of the position detecting sensor of FIG. 1, and FIG. 5 is a connector portion used in the mounting structure of the position detecting sensor of FIG. FIG. 6 is a plan view showing a modification of the sensor body used in the mounting structure for the position detecting sensor shown in FIG. 1, and FIG. 7 is a side view of the sensor body shown in FIG. 1 ... Connector part, 2 ... Tube, 3 ... Conductive layer, 4 ... Insulation cover, 5 ... Sensor body, 5a ... Arm, 5b ... Connection terminal, 5c, 5d ... Fitting groove , 5e …… Slope part, 6 ……
Cylinder device (device to be detected), 7 ... Cylinder body, 7a
...... Notch, 8 ...... Piston, 8a ...... Piston rod,
8b ... Magnet, 9a ... Left cylinder chamber, 9b ... Right cylinder chamber, 10a, 10b ... Supply / discharge port, 11 ... Mounting groove, 11a
...... Transparent cover, 11b ... Slope, 12 ... Conductive layer (wiring), 13 ... Eccentric cam (expansion means), 13a ... Driver groove, 13b ... Small diameter part, 13c ... Large diameter Part, 14 ... Pipe attachment / detachment member, 14a ... Hole, 15 ... Release member, 15a ... Insertion hole, 16
...... Prevention claw, 17 ...... Cylindrical member, 17a ...... Connection tube, 18
...... Connection terminal, 19 ...... Light emitting diode, 20 ...... Slide cam (expansion means), 20a ...... Inclined groove, 21 ...... Wiring.

Claims (3)

[Scope of utility model registration request] 1. A mounting structure for a position detecting sensor for detecting the position of a piston housed slidably in an axial direction of a cylinder body, wherein the cylinder body has an outer surface along which the sensor is mounted along the axial direction. A mounting groove into which the main body can be inserted is formed, and a wiring portion electrically connected to a connector portion for external connection provided in the cylinder main body is arranged in the axial direction on the bottom surface of the mounting groove. The sensor body is provided with a connection terminal that contacts the wiring portion and an arm that extends along one side surface of the sensor body, and the sensor body and the arm are provided between the sensor body and the arm. A mounting structure for a position detecting sensor, which is provided with a spreading means for pushing and expanding the space between and fixing the sensor body at an arbitrary position of the mounting groove. 2. The position according to claim 1, wherein the expanding means is an eccentric cam which is rotated about the axis of the large diameter portion as a rotation axis, and the small diameter portion is eccentrically rotated with respect to the large diameter portion. Mounting structure for detection sensor. 3. The mounting structure for a position detecting sensor according to claim 1, wherein the expanding means is a slide cam in which an inclined groove inclined toward the arm is formed.