JPH07270196A - Mounting structure and mounting tool for sensor - Google Patents

Abstract

PURPOSE:To provide a mounting structure and a mounting instrument for a sensor which can improve a mounting strength and prevent the sensor from lifting off. CONSTITUTION:A sensor mounting instrument 10 is inserted into a mounting groove 4. A rod-shaped mounting part 12 formed in the sensor mounting instrument 10 is engaged with an engaging groove 16 of a position detection sensor 9. The position detection sensor 9 is consequently fitted to the sensor mounting instrument 10. When a fixed screw 15 is clamped, the sensor mounting instrument 10 is moved to a direction away from the mounting groove 4, so that an end part A of a projecting element 13 of the sensor mounting instrument 10 is pressed in touch with a projecting part 6 of the mounting groove 4. As a result, the sensor mounting instrument 10 is rotated about the end part A, and accordingly the position detection sensor 9 is pressed to the mounting groove 4. At this time, a pressing force impressed to the position detection sensor 9 comes from the whole of the rod-shaped mounting part 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor mounting structure and a sensor mounting tool.

[0002]

2. Description of the Related Art Generally, a position detection sensor is used to detect the position of a piston in a cylinder, and the position detection sensor is attached to a mounting groove formed on the outer surface of the cylinder so as to extend in the axial direction of the cylinder. It is designed to be used.

As shown in FIGS. 13 and 14, the cylinder 5
A mounting groove 52 extending in the axial direction of the cylinder 51 is formed on the outer side surface of the cylinder 1, and projecting portions 53 are formed on both side surfaces of the opening of the mounting groove 52 so as to face each other. A sensor mounting tool 54 is inserted into the mounting groove 52, and the sensor mounting tool 54 has a U-shaped cross-section mounting tool body 55 and projecting pieces 56 protruding from the mounting tool body 55 toward both side surfaces of the mounting groove 52. It consists of and. A mounting portion 57 is formed inside the mounting body 55, and a fixing screw 58 is screwed into the mounting body 55 from the opening side of the mounting groove 52 toward the mounting portion 57.

The position detecting sensor 59 for detecting the position of the piston is formed in a rectangular parallelepiped shape, and the position detecting sensor 59
Is formed to have the same width as the width of the mounting groove 52. or,
A mounting portion 60 having a shape corresponding to the mounting portion 57 of the sensor mounting member 54 is formed at one end in the longitudinal direction of the position detection sensor 59, and a lead wire 61 is connected to the other end.

Then, the position detecting sensor 59 is attached to the mounting groove 52.
And the mounting portion 60 is inserted into the mounting portion 57 of the sensor mounting member 54. When the fixing screw 58 is screwed in in this state, the mounting portion 60 is pressed into the mounting groove 52 by the solid low screw 58 and the position detection sensor 59 is mounted in the mounting groove 52. Further, by screwing in the fixing screw 58, the sensor mounting member 54 moves in a direction away from the mounting groove 52, and each protruding piece 56 is pressed against the protruding portion 53 of the mounting groove 52, so that the sensor mounting member 54 is mounted. Fixed to.

[0006]

However, in the position detecting sensor 59, only one end portion in the longitudinal direction of the position detecting sensor 59 has the fixing screw 5.
Since it is pressed by 8, the other end of the position detection sensor 59, which is opposite to the sensor mounting member 54, easily floats from the mounting groove 52 due to the vibration of the cylinder 51 and the pulling of the lead wire 61. As a result, the sensitivity of the position detection sensor 59 deteriorates, and the position detection of the piston becomes inaccurate.

Further, when the lead wire 61 is pulled in the direction of the arrow in FIG. 13, a moment due to the pulling force is applied to the mounting portion 60 of the position detection sensor 54 and the mounting portion 60 is damaged.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a sensor mounting structure capable of improving the sensor mounting strength and preventing the sensor from floating. It is to provide a sensor fixture.

Another object of the present invention is to provide a sensor mounting structure and a sensor mounting tool capable of preventing the sensor from being damaged even when a force acts on the sensor in a direction to separate the sensor from the mounting groove. Here and here.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 is such that projecting portions are formed on both side surfaces of the opening of the mounting groove so as to face each other, and the mounting groove is formed in the mounting groove. Insert a sensor mounting fixture having a mounting portion on which the sensor can be mounted, and provide the sensor mounting fixture with a pair of projecting pieces that project toward both side surfaces of the mounting groove. From the side of the sensor, screw a fixing screw through which the fitting is inserted, mount the sensor on the sensor fitting, screw the fixing screw, press the protruding piece into contact with the protruding portion, and mount the sensor in the mounting groove. In the structure, the mounting portion is formed in a rod shape extending from the sensor mounting member in the extension direction of the mounting groove, and the sensor is provided with a fitting portion having a shape corresponding to the mounting portion, which corresponds to the protruding portion of the pair of protruding pieces. Others at one end on the mounting part side of the surface It was formed fulcrum portion protruding protrusion side of the part.

According to a second aspect of the invention, in the sensor mounting structure according to the first aspect, one surface of the pair of projecting pieces corresponding to the projecting portions has one end portion on the mounting portion side projecting from the other end portion. It is a slope that protrudes to the part side.

According to a third aspect of the present invention, a mounting portion for mounting the sensor is provided on the mounting tool body which is inserted into the mounting groove formed by projecting the projecting portions on both side surfaces of the opening so as to face each other. In the sensor mounting tool, a pair of projecting pieces projecting toward both side surfaces of the mounting groove are provided, and a fixing screw that is inserted into the mounting tool main body from the opening side of the mounting groove is screwed to the mounting tool main body. Is formed into a rod shape, and a fulcrum portion projecting toward the projecting portion side from the other end portion is formed at one end portion on the mounting portion side of the surface corresponding to the projecting portion of the pair of projecting pieces.

[0013]

Therefore, according to the first aspect of the invention, the sensor mounting member is inserted into the mounting groove, and the sensor fitting member is fitted into the rod-shaped mounting portion formed in the sensor mounting member. Be attached to. Then, when the fixing screw is screwed in, the sensor attachment moves in the direction away from the attachment groove, and the fulcrum portion provided on the protruding piece of the sensor attachment comes into pressure contact with the protrusion of the attachment groove. As a result, the sensor attachment rotates about the fulcrum, and the rotation presses the sensor against the attachment groove. At this time, the pressing force applied to the sensor is applied from the entire rod-shaped mounting portion. Further, when a force is applied to the sensor in the direction in which the sensor is separated from the mounting groove while the sensor is mounted in the mounting groove, the force is applied to the entire rod-shaped mounting portion.

According to the invention of claim 2, in addition to the function of the invention of claim 1, when the fixing screw is screwed in, the sensor attachment moves in the direction away from the attachment groove and is formed on the protruding piece of the sensor attachment. The protruding part of the inclined surface is pressed against the mounting groove. As a result, the sensor attachment rotates about the protruding portion of the slope, and the rotation presses the sensor against the attachment groove.
Further, when the sensor fitting is rotated, the entire inclined surface of the protruding piece is pressed against the protruding portion of the mounting groove.

According to the third aspect of the invention, when the sensor mount is inserted into the mounting groove and the fixing screw is screwed in, the sensor mount moves in the direction away from the mounting groove and is provided on the protruding piece of the sensor mount. The fulcrum is pressed against the protrusion of the mounting groove. As a result, the sensor attachment rotates about the fulcrum, and when the sensor is attached to the attachment, the attachment causes the attachment to press the sensor into the attachment groove.

[0016]

【Example】

(First Embodiment) A first embodiment in which the present invention is embodied in a rodless cylinder will be described below with reference to FIGS.

As shown in FIG. 7, the rodless cylinder 1
The cylinder tube 2 extends in a predetermined direction, and a piston (not shown) is accommodated in the cylinder tube 2 so as to be movable in the extension direction of the tube 2. This piston is connected to a mount table 3 arranged on the upper side of the cylinder tube 2 so as to be integrally movable.

A mounting groove 4 is formed on one side surface of the cylinder tube 2 so as to extend in the extending direction of the cylinder tube 2, and both ends of the mounting groove 4 are closed by end covers 5 provided at both ends of the cylinder tube 2. Has been done. Further, as shown in FIG. 8, projecting portions 6 are formed so as to project from both side surfaces of the opening of the mounting groove 4 so as to face each other.
A position detection sensor for detecting the position of the piston is attached to the.

As shown in FIG. 1, the fitting main body 11 of the sensor fitting 10 for mounting the position detecting sensor 9 as a sensor in the mounting groove 4 has a lateral width X of a pair of protrusions 6 of the mounting groove 4. It is formed to be smaller than the distance between them. Further, the vertical width Y of the fixture main body 11 is formed to be the same as the distance between the pair of protrusions 6 of the attachment groove 4. A pair of rod-shaped mounting portions 12 are formed at the front end of the right side surface of the attachment body 11, and the length of the pair of mounting portions 12 is the same as the length of the position detection sensor 9. Further, a pair of projecting pieces 13 projecting in the vertical direction are formed at the rear ends of the upper and lower side surfaces of the fixture body 11, and the front surface of each of the pair of projecting pieces 13 has the projecting pieces 13 toward the mounting portion 12 side. The slope 14 becomes thicker. That is, as shown in FIG. 2, the end portion A of the slope 14 on the mounting portion 12 side projects from the end portion on the opposite side of the mounting portion 12. A fixing screw 15 is screwed into the fixture body 11 from the front side toward the rear side.

The position detecting sensor 9 is formed in a rectangular parallelepiped shape, and the sensor mounting member 10 is provided on both upper and lower side surfaces and a left side surface thereof.
A fitting groove 16 as a fitting portion having a shape corresponding to the pair of mounting portions 12 is formed. That is, the pair of mounting portions 12 can be fitted into the fitting groove 16.

Next, the operation of mounting the position detecting sensor 9 in the mounting groove 4 using the sensor mounting tool 10 will be described. As shown in FIG. 3, the sensor attachment 10 is arranged so that the mounting portion 12 extends in the width direction of the attachment groove 4, and the attachment body 11 is inserted into the attachment groove 4. And the fixture body 1
When 1 is rotated 90 ° in the direction of the arrow, as shown in FIG. 4, the protruding piece 13 of the sensor mount 10 is inserted inside the protruding portion 6 of the mounting groove 4. In this state, when the position detection sensor 9 inserted in the mounting groove 4 is moved to the sensor mounting tool 10 side,
As shown in FIG. 5, the pair of mounting portions 12 are fitted into the fitting groove 16 so that the position detection sensor 9 is attached to the sensor fitting 10.

Then, the fixing screw 15 of the sensor attachment 10
When is screwed in, the tip of the fixing screw 15 is pressed against the bottom surface of the mounting groove 4 and the sensor mounting tool 10 moves in a direction away from the mounting groove 4. By this movement, as shown in FIG. 6, the protruding piece 13 is pressed against the protruding portion 6 of the mounting groove 4,
The sensor fixture 10 rotates around the end portion A of the slope 14 on the mounting portion 12 side, and the slope 14 comes into pressure contact with the protrusion 13. By the rotation of the sensor mount 10, a pressing force is applied to the entire mounting portion 12 in the direction of the arrow in FIG. 6, and this pressing force acts on the entire position detection sensor 9. Then, the pressing force fixes the position detection sensor 9 in the mounting groove 4. or,
Even if a force acts on the position detection sensor 9 in the direction of separating the sensor, the force is received by the entire mounting portion 12, so that the position detection sensor is prevented from being damaged.

As described above in detail, in this embodiment, the surface of the protruding piece 13 corresponding to the protruding portion 6 is the inclined surface 14. Therefore, when the fixing screw 15 is screwed in, the sensor fixture 10 rotates about the end portion A, and this rotation applies a pressing force to the position detection sensor 9. Therefore, the mounting strength of the position detection sensor 9 is improved as compared with the conventional case, and it is possible to prevent the position detection sensor 9 from floating from the mounting groove 4 even if the rod cylinder 1 is driven and vibration occurs. As a result, the position of the piston can be detected accurately.

Since the surface corresponding to the protruding portion 6 is the inclined surface 14, when the fixing screw 15 is screwed in, the entire inclined surface 14 is pressed against the protruding portion 6. Therefore, even if some force is applied to the sensor mounting tool 10 when mounting the position detecting sensor 9, the sensor mounting tool 10 does not rattle, and the mounting strength of the position detecting sensor 9 can be further improved.

In this embodiment, a pair of rod-shaped mounting portions 12 are formed on the fixture body 11 so that the length of the mounting portions is the same as the length of the position detecting sensor 9. Therefore, the pressing force due to the rotation of the sensor attachment 10 is applied to the entire position detection sensor 11, and the position detection sensor 9 can be more reliably fixed to the attachment groove 4.

Further, when the position detecting sensor 9 is mounted in the mounting groove 4, even if a force acts on the position detecting sensor 9 in a direction of separating the sensor 9 from the mounting groove 4, the force is applied to the pair of rod-shaped mounting portions. Receive at 12. Therefore, it is possible to prevent the position detection sensor 9 from being damaged by the force.

Further, according to this embodiment, the fixture body 11
The lateral width X of the same was made the same as the distance between the pair of protrusions 6, and the vertical width Y was made smaller than the distance between the pair of protrusions 6. Therefore, the sensor mount 10 can be inserted into the mounting groove 4 without removing the end cover 5.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and detailed description thereof will be omitted.

As shown in FIG. 9, a second mounting portion 20 is recessed on the rear side surface of the attachment body 11 of the sensor attachment 10.
By forming the second mounting portion 20, the fixture body 1
1 has a U-shaped cross section. A mounting portion 21 having a shape corresponding to the second mounting portion 20 is formed on the rear side of the left side surface of the position detection sensor 9 so as to project therefrom.

Then, as shown in FIG. 10, when the sensor mounting tool 10 is inserted into the mounting groove 4 and the pair of mounting portions 12 of the sensor mounting tool 10 are fitted into the fitting groove 16 of the position detecting sensor 9, the mounting is performed. The part 21 is inserted into the second mounting part 20. When the fixing screw 15 is screwed in in this state, the tip of the fixing screw 15 is pressed against the surface 21 a of the mounting portion 21 of the position detection sensor 9, and the sensor mounting member 10 moves in a direction away from the mounting groove 4. As a result of this movement, as shown in FIG.
Is pressed against the protruding portion 6 of the mounting groove 4, and the sensor mount 1
0 rotates about the end A of the slope 14, and the position detection sensor 9 is moved by the pressing force of the mounting portion 12 in the direction of the arrow.
Fixed to.

Therefore, in this embodiment, the tip of the fixing screw 15 is pressed against the surface 21a of the mounting portion 21 of the position detecting sensor 9 to rotate the sensor mounting tool 10 about the end A. Therefore, in addition to the operation and effect of the first embodiment, the position detecting sensor 9 is pressed against the bottom surface of the mounting groove 4 not only by the mounting portion 12 but also by the fixing screw 15, so that the mounting strength of the position detecting sensor 9 is further improved. be able to.

The present invention is not limited to the above-mentioned embodiments, but may be embodied with the following modifications. (1) In each of the above embodiments, the mounting groove 4 in the protruding piece 13
The surface corresponding to the projecting portion 6 is the slope 14, but the present invention is not limited to this. That is, as shown in FIG. 12, the protruding piece 13 is formed in a flat plate shape, and a fulcrum protruding toward the protruding portion 6 side at one end portion of the surface of the protruding piece 13 corresponding to the protruding portion 6 on the mounting portion 12 side. The part C may be formed. In this case, the sensor mounting tool 11 can be rotated about the fulcrum C by screwing the fixing screw 15.

(2) In each of the above embodiments, the rod-shaped mounting portion 12 may be shorter than the position detecting sensor 9. In this case, the mounting strength of the position detection sensor 10 can be improved as compared with the related art, and the position detection sensor 9 can be prevented from floating. The length of the mounting portion 12 may be longer than that of the position detection sensor 9. in this case,
The mounting strength of the position detection sensor 10 can be improved as in the above-described respective embodiments, and the position detection sensor 9 can be prevented from floating.

(3) In each of the above embodiments, the sensor mount 10
Although a pair of rod-shaped mounting portions 12 are provided in the
You may provide only one. In this case, the position detection sensor 9 may be provided with a mounting hole for fitting the mounting portion 12 in the longitudinal direction thereof. Even if the sensor mount 10 is configured in this manner, the mounting strength of the position detection sensor 9 can be improved.

(4) In each of the above embodiments, the present invention is applied to the rodless cylinder 1, but it may be applied to a cylinder having a piston rod. Further, the present invention may be implemented when the sensor is mounted in the groove other than the cylinder. Also in this case, the mounting strength of the sensor can be improved.

(5) In each of the above embodiments, the sensor mounted in the mounting groove 4 need not be the position detection sensor 9.
For example, a temperature sensor, a pressure sensor, a flow velocity sensor, an optical sensor, etc. may be attached. Also in this case, the mounting strength of the sensor can be improved.

Next, technical ideas other than the claims that can be understood from the above-described embodiments will be described below along with their effects. (1) A bar-shaped mounting portion extending in the extending direction of the mounting groove is provided in a mounting tool that can be fixed in the mounting groove, and a fitting portion having a shape corresponding to the mounting portion is formed in the sensor. A sensor mounting structure that mounts the sensor in the mounting groove by fitting the mounting part of the mounting tool into.

In this case, when the sensor is mounted in the mounting groove, even if a force is applied to the sensor in the direction of separating the sensor from the mounting groove, the force is received by the entire rod-shaped mounting portion.
It is possible to prevent damage to the sensor.

(2) In the sensor mount according to the third aspect of the present invention, a surface of the pair of projecting pieces corresponding to the projecting portion of the mounting groove is arranged such that one end portion of the surface on the mounting portion side is closer to the projecting portion side than the other end portion. Sensor mount with a protruding slope.

In this case, when the sensor is mounted in the mounting groove by the sensor mounting tool, the sensor mounting tool does not rattle even if some force is applied to the sensor mounting tool, and it is possible to more reliably prevent the sensor from floating. it can.

In this specification, the sensor means a device for detecting an absolute value or a change of a physical quantity, and includes not only a position detection sensor but also a temperature sensor, a pressure sensor, a flow velocity sensor, an optical sensor and the like.

[0042]

As described above in detail, in the invention according to claim 1, the sensor mounting tool rotates about a fulcrum portion provided on the protruding piece, and the sensor is pressed against the mounting groove by this rotation. The sensor is mounted in the mounting groove. Therefore, the mounting strength of the sensor can be improved, and the floating of the sensor can be prevented. Further, the pressing force to the sensor due to the rotation of the sensor attachment is applied from the entire rod-shaped mounting portion. Therefore, the mounting strength of the sensor can be further improved, and the floating of the sensor can be more surely prevented. Furthermore, with the sensor mounted in the mounting groove,
When a force is applied to the sensor in the direction of separating the sensor from the mounting groove, the force is applied to the entire rod-shaped mounting portion. Therefore, it is possible to prevent the sensor from being damaged by the force in the direction of separating the sensor from the mounting groove.

According to the second aspect of the present invention, when the sensor mounting tool is rotated, the entire inclined surface of the projecting piece is pressed against the projecting portion of the mounting groove, so that the sensor mounting tool rattles even if some force is applied to the sensor. Therefore, it is possible to prevent the floating of the sensor more reliably.

According to the third aspect of the invention, the sensor mounting tool rotates about a fulcrum portion provided on the projecting piece, and the sensor is pressed into the mounting groove by this rotation, and the sensor is mounted in the mounting groove. Therefore, the mounting strength of the sensor can be improved, and the floating of the sensor can be prevented. Further, the pressing force to the sensor due to the rotation of the sensor attachment is applied from the entire rod-shaped mounting portion. Therefore, the mounting strength of the sensor can be further improved, and the floating of the sensor can be more surely prevented. Furthermore, when a force is applied to the sensor in a direction of separating the sensor from the mounting groove in a state where the sensor is mounted in the mounting groove, the force is applied to the entire rod-shaped mounting portion. Therefore, it is possible to prevent the sensor from being damaged by the force in the direction of separating the sensor from the mounting groove.

[Brief description of drawings]

FIG. 1 is a perspective view showing a position detection sensor and a sensor attachment of a first embodiment.

FIG. 2 is a side view showing a sensor attachment.

FIG. 3 is a front view showing a state in which a sensor mounting tool is inserted into a mounting groove.

FIG. 4 is a front view showing a state in which the sensor fixture of FIG. 3 is rotated by 90 °.

FIG. 5 is a cross-sectional view showing a state in which a position detection sensor is attached to a sensor attachment.

6 is a cross-sectional view showing a state in which a fixing screw of the sensor attachment of FIG. 5 is screwed in.

FIG. 7 is a perspective view showing a rodless cylinder of the first embodiment.

FIG. 8 is a cross-sectional view showing a mounting groove.

FIG. 9 is a perspective view showing a position detection sensor and a sensor attachment of the second embodiment.

FIG. 10 is a cross-sectional view showing a state in which the position detection sensor is attached to the sensor attachment.

11 is a cross-sectional view showing a state where a fixing screw of the sensor attachment of FIG. 10 is screwed in. FIG.

FIG. 12 is a side view showing another example of a sensor mounting tool.

FIG. 13 is a perspective view showing a mounting structure of a conventional position detection sensor.

14 is a cross-sectional view of the sensor attachment and the position detection sensor of FIG. 13 as seen from the direction of arrow BB.

[Explanation of symbols]

4 ... Mounting groove, 6 ... Projection part, 9 ... Position detection sensor as sensor, 10 ... Sensor mounting tool, 11 ... Mounting tool body, 12
... Mounting part, 13 ... Projecting piece, 14 ... Slope, 15 ... Fixing screw, 16 ... Fitting groove as fitting part, A ... End part.

Claims (3)

[Claims] 1. A protrusion (6) is formed on both side surfaces of an opening of a mounting groove (4) so as to face each other, and a mounting portion (4) on which a sensor (9) can be mounted. 12) is inserted, and the sensor mounting tool (10) is provided with a pair of projecting pieces (13) projecting toward both side surfaces of the mounting groove (4). (1
0) from the opening side of the mounting groove (4) to the fitting (1
0) through which a fixing screw (15) is screwed, and the sensor fitting (10) is attached with the sensor (9), and then the fixing screw (15).
In the sensor mounting structure in which the sensor (9) is mounted in the mounting groove (4) by screwing, the protruding piece (13) is pressed against the protruding portion (6), and the mounting portion (12) is attached to the sensor mounting tool (10). ) Is formed into a rod shape extending in the extension direction of the mounting groove (4), and the sensor (9) is formed.
Has a fitting part (1) having a shape corresponding to the mounting part (12).
6) is provided, and a fulcrum portion projecting toward the projecting portion (6) from the other end is provided at one end portion on the side of the mounting portion (12) on the surface corresponding to the projecting portion (6) of the pair of projecting pieces (13). The mounting structure of the sensor which formed A). 2. The sensor mounting structure according to claim 1, wherein the surfaces of the pair of projecting pieces (13) corresponding to the projecting portions (6) are
A sensor mounting structure in which one end portion of the surface on the mounting portion (12) side is a sloped surface (14) protruding toward the protruding portion side from the other end portion. 3. A sensor (9) is attached to a fixture body (11) which is inserted into a mounting groove (4) formed by projecting projecting portions (6) on both sides of the opening so as to face each other. A mounting portion (12) is provided, and a pair of projecting pieces (13) projecting toward both side surfaces of the mounting groove (4) are provided, and the mounting body (11) is provided from the opening side of the mounting groove (4). In a sensor fixture in which a fixing screw (15) to be inserted is screwed to the fixture body (11), the mounting portion (12) is formed in a rod shape, and a pair of protruding pieces (1
3) A sensor attachment in which a fulcrum portion (A) protruding toward the protrusion (6) side from the other end is formed at one end of the surface corresponding to the protrusion (6) of the mounting portion (12) side.