JP4919902B2 - Detection device mounting device - Google Patents

Description

  The present invention relates to an attachment device for a detection device for detecting a piston position in a fluid pressure cylinder or the like.

  Conventionally, in order to detect the piston position of the fluid pressure cylinder, a detection device that detects the magnetic field of a permanent magnet attached to the piston is used. The detection device incorporates an MR element, a hole element, a lead switch, or the like as an element that operates by a magnetic field (magnetic flux).

  As the permanent magnet attached to the piston, an annular magnet having a diameter slightly smaller than the outer diameter of the piston is used. Since cylinder devices having different inner diameters of cylinder tubes are provided, permanent magnets having different diameters are manufactured and used according to the respective inner diameters.

  Further, in order to detect the piston position, the magnetic field of the permanent magnet needs to pass through the cylinder tube and go outside, so that the cylinder tube is often made of a nonmagnetic material such as an aluminum alloy.

  As a mounting device for such a detection device, it has a mounting block that is inserted into a groove having a substantially T-shaped cross section provided on the outer peripheral surface of the cylinder body, and the detection device body is fixed by fixing the mounting block in the groove. What was comprised so that it might attach to the said cylinder main body was proposed and implemented from before (patent documents 1-3).

In such a conventional mounting device, in order to fix the mounting block in the groove, a screw hole that penetrates from the top surface to the bottom surface of the mounting block is provided, and a set screw is screwed into this screw hole and screwed from above Thus, the set screw is pressed against the bottom surface of the groove to be fixed.
Akira 61-59905 JP 2001-343003 A JP 2005-181136 A

  However, in many cases, such a fluid pressure cylinder does not have a sufficient space for mounting. For example, when the fluid pressure cylinder is used in a mold for injection molding or press molding, a particularly thin fluid pressure cylinder is used, and it is attached in a narrow place without room.

  After installing the fluid pressure cylinder, it is necessary to adjust the position of the detection device before using the device or during maintenance of the device. In order to adjust the position of the detection device, it is necessary to loosen and tighten the set screw, but often there is not enough space to insert a tool for rotating such a set screw.

  For example, in the case of the conventional attachment device described above, a tool such as a hex wrench or a screwdriver must be engaged with a set screw from above the detection device and rotated, and 5 cm above the detection device. A certain amount of space is required.

  Thus, conventionally, it has been necessary to secure a range of 5 centimeters or more from the mounting surface of the detection device in the fluid pressure cylinder as a space for adjusting the position of the detection device. Therefore, as described above, when the fluid pressure cylinder is attached to the mold, it is extremely difficult to secure the space, and it is difficult to adjust the position of the detection device.

  The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to easily adjust the position of a detection device even when a fluid pressure cylinder or the like is attached to a narrow place.

An apparatus according to the present invention includes a mounting block inserted into a groove having a substantially T-shaped cross section provided on an outer peripheral surface of a cylinder body in a fluid pressure cylinder , and a detection device by fixing the mounting block in the groove. a mounting device configured detection device so that to detect the piston position in the fluid pressure cylinder is attached to the main body to the cylinder body, the pin opening to said mounting block, on the bottom surface opposite to the groove The pin hole is provided with a pressing member that protrudes from the pin hole and is movable in the axial direction of the pin hole, and a sphere is disposed on the top of the pressing member in the pin hole, and the pin A pressing screw provided in a threaded hole that has an axis extending in a direction having an angle with respect to the axial direction of the hole and that opens on the peripheral surface of the mounting block is screwed from the outside. By directly or indirectly pressing the sphere, the pressing member is moved in a direction protruding from the pin hole, whereby the pressing member directly or indirectly moves the bottom surface of the groove. The mounting block is configured to be pushed and fixed in the groove.

  Preferably, the pressing screw has a tapered conical portion at a tip portion, the tip portion is in contact with an upper slope of the sphere, and the sphere directly by screwing the pressing screw. And the pressing member may be moved in a direction protruding from the pin hole.

  Also, a second pin hole is provided between the threaded hole and the pin hole, and a second pressing member and a second sphere are provided in the second pin hole. The front end portion is in contact with the upper slope of the second sphere, and by screwing the pressing screw, the sphere is indirectly pressed through the second sphere and the second pressing member. The pressing member may be moved in a direction protruding from the pin hole.

  In addition, the threaded hole is provided such that the shaft thereof is provided along the longitudinal direction of the groove, and the tool is engaged with the pressing screw from the direction along the longitudinal direction of the groove to be rotated. Good.

  Further, the threaded hole has an axis provided along a direction perpendicular to the longitudinal direction of the groove and is open to a side surface of the mounting block, and is perpendicular to the longitudinal direction of the groove. The tool may be engaged with the pressing screw and rotated from the side facing the side surface.

  Further, the detection device main body is held by a holding member made of a metal material, and the holding member is fixed to the mounting block with a screw to be integrated with the mounting block, and a part of the holding member is formed on the bottom surface of the mounting block. A part may be covered, and the pressing member may be configured to indirectly press the bottom surface of the groove through a part of the holding member. Moreover, you may use what attached the auxiliary | assistant board to the bottom part by welding etc. as a holding member. When such a holding member is used, the pressing member pushes the holding member toward the bottom surface of the groove, thereby preventing the detection device from floating from the cylinder body, and a normal detection operation by the detection device is ensured.

  “The sphere is arranged on the top of the pressing member” includes the case where the sphere is arranged on the top as a part of the pressing part.

  According to the present invention, even when a fluid pressure cylinder or the like is attached to a narrow place, the position of the detection device can be easily adjusted.

  1 is a plan view of a fluid pressure cylinder 1 to which a detection device 3 according to an embodiment of the present invention is attached, FIG. 2 is a front view of the fluid pressure cylinder 1, FIG. 3 is a front view of the detection device 3, and FIG. FIG. 5 is a bottom view of the detection device 3, FIG. 6 is a right side view of the detection device 3, FIG. 7 is a left side view of the detection device 3, FIG. 8 is a front view of the holding member 41, and FIG. 10 is a plan view of the holding member 41, FIG. 10 is a right side view of the holding member 41, FIG. 11 is a left side view of the holding member 41, FIG. 12 is a plan view of the mounting block 51, and FIG. 14 is a sectional front view of the mounting block 51, and FIG. 15 is a right side view of the mounting block 51.

  8 to 15 are parts diagrams, but there are also parts that show a state in which some parts are assembled. Further, in the following description, “axial direction” and “circumferential direction” refer to directions when the detection device 3 is attached to the cylinder tube 11 in principle. For example, “axial direction” refers to the horizontal direction in FIG. The “circumferential direction” is the vertical direction in FIG.

  1 and 2, the fluid pressure cylinder 1 includes a cylinder tube 11, a piston (not shown), a piston rod 13, a detection device 3, a cylinder bush 15, and the like.

  The cylinder tube (cylinder main body) 11 can also use a nonmagnetic material such as aluminum alloy, stainless steel, or synthetic resin. A groove 111 having a substantially T-shaped cross section extending in the axial direction is formed on the outer peripheral surface of the cylinder tube 11. The groove 111 is provided with a flat or substantially circumferential bottom 112, an expansion groove 113 extending in the circumferential direction at the bottom 112, and an engaging portion 114 that can be engaged outward. The detection device 3 is attached to the groove 111. In addition, the cross-sectional shape of the groove | channel 111 can be made into various things.

  The piston is made of a nonmagnetic material such as aluminum alloy or stainless steel, and a permanent magnet is mounted in an annular groove provided on the outer periphery. The piston is provided with a packing for sealing with the cylinder tube 11. The piston rod 13 is made of a steel material or the like, and is integrally connected to the piston by a screw or the like provided at an end thereof.

  The permanent magnet is annular, and an N pole and an S pole are provided in a direction along the axial direction of the piston rod 13. The detection device 3 detects the magnetic field of the permanent magnet and thereby detects the position of the piston (position of the piston rod 13).

  3 to 7, the detection device 3 includes a detection switch 31 as a detection device body, a holding member 41, and a mounting block 51.

  The detection switch 31 is for detecting the magnetic field of the permanent magnet and thereby detecting the position of the piston. The detection switch 31 includes a casing 32, a magnetic sensor, a cable 34, a board on which an electric circuit is mounted, and other members.

  The casing 32 has a substantially rectangular parallelepiped shape made of synthetic resin, and a shallow groove 312 is formed on the upper surface by two linear convex portions 311 for attachment. At a position close to the lower surface in the casing 32, the magnetic sensor is attached to the substrate or disposed alone. As the magnetic sensor, a Hall element, Hall IC, magnetoresistive effect element (MR element), magnetic transistor, reed switch, proximity sensor, or the like is used. In addition, an indicator lamp 314 for displaying an operation state is provided at the center of the upper surface of the distal end portion of the casing 32.

  The cable 34 is used to supply power to the board and take out an output signal based on the operation of the magnetic sensor. Usually, when power supply and output are performed in common, two wires are used. When these are performed separately, three electric wires are used.

  The holding member 41 holds the detection switch 31 and is attached to the attachment block 51 with a screw 42. The holding member 41 is formed by processing a metal plate having a sufficient thickness of about several millimeters, and has an appropriate elasticity. A stainless steel plate is usually used as the material of the holding member 41, but other metal materials may be used.

  The mounting block 51 is made of a nonmagnetic material such as an aluminum alloy or a synthetic resin. The mounting block 51 is inserted into a T-shaped groove 111 provided in the cylinder tube 11. By fixing the mounting block 51 in the groove 111, the holding member 41 is in close contact with the bottom 112, and the detection switch 31 is attached to the cylinder tube 11 so that the gap between the detection switch 31 and the bottom 112 is minimized. It has become.

  With reference to FIGS. 8 to 11, the holding member 41 includes a switch holding portion 41 </ b> A and a block holding portion 41 </ b> B. The switch holding portion 41A and the block holding portion 41B are integrally connected to each other by the bottom surface portion 411.

  The switch holding portion 41A has a side wall portion 412 bent at a right angle with respect to the substantially rectangular bottom surface portion 411, an upper wall portion 413 bent at a further right angle with respect to the side wall portion 412, and a right angle with respect to the upper wall portion 413. The presser side wall portion 414 having a short length that is bent to the right side, and the operation portion 415 that is folded back from the tip end portion of the presser side wall portion 414 are provided. A linear bulging portion 416 is formed on the side wall portion 412 for reinforcement.

  The casing 32 of the detection switch 31 is surrounded and held by the bottom surface portion 411, the side wall portion 412, the upper wall portion 413, and the pressing side wall portion 414.

  Note that one end edge portion of the bottom surface portion 411 is bent downward to serve as a guide portion 417 when the detection switch 31 is mounted. That is, in order to attach the detection switch 31 to the holding member 41, the detection switch 31 is inserted between the side wall portion 414 and the side wall portion 412 by pressing the upper surface portion (the surface on which the indicator lamp 314 is provided). Accordingly, the lower surface portion is pushed toward the side wall portion 412 so as to slide on the surface of the guide portion 417. At this time, the entire switch holding portion 41 </ b> A is elastically bent, and after the detection switch 31 is in a predetermined position, the switch holding portion 41 </ b> A is returned to the original state with a little elastic force.

  The block holding portion 41B includes a side wall portion 418 that is bent at a right angle with respect to the bottom surface portion 411, an upper wall portion 419 that is further bent at a right angle with respect to the side wall portion 418, and a long hole 420 provided in the upper wall portion 413. An extended bottom surface portion 421 on the extension of the bottom surface portion 411, a side wall portion 422 bent at about 60 to 80 degrees at the distal end portion of the extended bottom surface portion 421, and an auxiliary fixed to the surface of the extended bottom surface portion 421 by welding or the like A plate 423 is provided. The auxiliary plate 423 is manufactured separately from the bottom surface portion 411 and integrated by welding, but may be manufactured integrally from the beginning.

  As described above, in the holding member 41, a part of the bottom surface portion 411 covers a part of the bottom surface of the mounting block 51.

  Referring to FIGS. 12 to 15, the attachment block 51 is configured by integrally forming a fixed block 51 </ b> A and a connecting block 51 </ b> B.

  Engagement protrusions 511 and 511 are provided on the fixed block 51A at positions close to the bottom surfaces of both side surfaces. Each engaging protrusion 511 has an inclined surface 512 on the upper surface, and enters the extended groove 113 of the groove 111 to engage with the engaging portion 114. As a result, the mounting block 51 is movable (slidable) in the axial direction in the groove 111, but does not come out of the groove 111 except in the axial direction. A shallow belt-like groove is provided on the bottom surface of the fixed block 51 </ b> A, and this portion is a concave surface 513.

  The fixed block 51A is provided with a pin hole 514 that opens to a concave surface 513 that is a surface facing the bottom surface of the T-shaped groove 111 provided in the cylinder tube 11. The pin hole 514 is provided with a pressing pin 515 as a pressing member that protrudes from the pin hole 514 and is movable in the axial direction of the pin hole 514. The pressing pin 515 has a cylindrical shape made of a metal material or a synthetic resin material, and both end surfaces are chamfered. A steel ball 516 is disposed on the top of the pressing pin 515 in the pin hole 514.

  In addition, a threaded hole 517 having an axis extending in a direction perpendicular to the axial direction of the pin hole 514 and opening on the side surface of the fixed block 51A is provided, and a pressing screw 518 is screwed into the threaded hole 517. is doing. The pressing screw 518 is a screw with a sharp-pointed hexagonal hole. The conical taper surface of the tip portion hits the steel ball 516, and the pressing pin 515 is pressed by pressing the steel ball 516 by screwing the pressing screw 518 from the outside. It is moved in a direction protruding from the pin hole 514. As a result, the pressing pin 515 indirectly presses the bottom surface of the groove 111 via the auxiliary plate 423, and the mounting block 51 is fixed in the groove 111. That is, when the pressing pin 515 presses the bottom surface of the groove 111 via the auxiliary plate 423, the mounting block 51 moves upward in FIG. 14, and the engaging protrusion 511 presses against the engaging portion 114 of the groove 111. Engage.

  The auxiliary plate 423 and the bottom surface portion 411 of the holding member 41 are appropriately bent and elastically deformed with the movement of the pressing pin 515 so that the gap between the detection switch 31 held and the bottom portion 112 is reduced. It has become.

  A screw hole 519 for connecting the holding member 41 is provided in the connection block 51B. The screw 42 (see FIG. 4) is inserted into the screw hole 519 through the washer and the long hole 420 in a state where the upper wall portion 419 of the holding member 41 is positioned near the upper surface of the connection block 51B. .

  Further, the connection block 51B is provided with a screw hole 520 for engaging a jig when the mounting block 51 is moved in the axial direction. That is, in a state where the pressing screw 518 is loosened, a long rod-shaped jig having a male screw provided at the tip is used to be screwed into the screw hole 520 from the axial direction of the fluid pressure cylinder 1 to engage the jig. The detection device 3 can be moved in the axial direction by pushing or pulling. As a result, the position of the detection device 3 can be adjusted. Therefore, the detection device 3 can be fixed and released and the detection device 3 can be moved from the same axial direction as the pressing screw 518, and the position adjustment of the detection device 3 can be easily and reliably performed.

  In the detection device 3 configured as described above, when the mounting block 51 is inserted into the T-shaped groove 111 of the cylinder tube 11 and the axial position thereof is adjusted, the pressing screw 518 is rotated and tightened. The pressing pin 515 presses the bottom 112 of the groove 111, and the mounting block 51 is fixed. At the same time, the pressing pin 515 also presses the auxiliary plate 423, which is a part of the holding member 41, against the bottom 112, so that the detection switch 31 in the holding member 41 is pressed toward the bottom 112, and the operation of the detection switch 31 is performed. There is no instability. When adjusting the position of the detection device 3, the pressure screw 518 is loosened to move the detection device 3, and after the position is determined, the pressure screw 518 is loosened.

  When loosening the pressing screw 518, the axis of the threaded hole 517 is provided along the longitudinal direction of the groove 111, so that a tool such as a hexagon wrench is engaged with the pressing screw 518 from the direction along the longitudinal direction of the groove 111. Can be rotated together.

  That is, in order to rotate the pressing screw 518, it can be operated with a tool from the axial direction of the fluid pressure cylinder 1 and the detection device 3, that is, the longitudinal direction of the groove 111, so that there is a space around the fluid pressure cylinder 1. Even without this, the tool can be easily inserted from the axial direction.

  As described above, in the embodiment described above, the moving direction is changed by 90 degrees using the steel ball 516 and the pressing screw 518 in order to cause the pressing pin 515 to protrude from the concave surface 513 of the fixing block 51A. As a result, in the prior art, it was necessary to leave a sufficient space above the detection device in order to rotate the screw with a tool from above the detection device. However, according to the present embodiment, a space is provided above the detection device. There is no need to leave it open, and it is possible to work by inserting a tool from the axial direction.

  Therefore, even when the fluid pressure cylinder 1 is attached to a narrow place, the position of the detection device 3 can be easily adjusted.

  In the example described above, the movement direction of the pressing pin 515 is changed by 90 degrees so that the pressing screw 518 is rotated from the rear side in the axial direction of the mounting block 51, that is, the cable 34 side. The pressing screw 518 may be provided so as to rotate the pressing screw 518 from the front side in the block 51.

  Further, the pressing screw 518 may be provided so as to rotate the pressing screw 518 from the right or left lateral surface side of the mounting block 51.

  That is, the threaded hole 517 and the pressing screw 518 may be provided on any side surface of the mounting block 51. Further, the mounting block 51 is not rectangular in a plan view, but has a trapezoidal shape, a hexagonal shape, an octagonal shape, other polygonal shapes, or a circular shape, and the threaded holes 517 are opened on various side surfaces or peripheral surfaces thereof. The pressing screw 518 may be screwed from the outside from various directions.

  Also, instead of changing the direction of movement of the pressing pin 515 by 90 degrees, the pressing screw 518 is rotated from an obliquely upward or obliquely downward direction of the mounting block 51 at an angle other than 90 degrees, for example, 70 degrees, 80 degrees, 100 degrees, etc. You may make it do.

  In the embodiment described above, the tip of the pressing screw 518 is directly pressed against the steel ball 516 to move the steel ball 516 and the pressing pin 515, but between the pressing screw 518 and the steel ball 516. Another pin may be provided and indirectly pressed, and the movement direction may be changed to indirectly move.

  Next, such an embodiment will be described. Here, only differences from the mounting block 51 of the above-described embodiment will be described.

  FIG. 16 is a cross-sectional plan view of the mounting block 61 of the second embodiment.

  In FIG. 16, the mounting block 61 is formed by integrally forming a fixed block 61A and a connecting block 61B.

  The fixed block 61 </ b> A is provided with a pin hole 614 that opens on the bottom surface of a T-shaped groove 111 provided in the cylinder tube 11. The pin hole 614 is provided with a pressing pin 615 that protrudes from the pin hole 614 and is movable in the axial direction. A steel ball 616 is disposed on the top of the pressing pin 615 in the pin hole 614.

  Further, a screwed hole 617 is provided in the side surface of the fixed block 61A, and a pressing screw 618 is screwed into the screwed hole 617. The pressing screw 618 is a pointed hexagon socket head screw.

  Between the threaded hole 617 and the pin hole 614, a second pin hole 630 that intersects with them is provided, and a second pressing pin 631 and a second steel ball 632 are provided in the second pin hole 630. The opening portions at both ends of the second pin hole 630 are provided with stuffing 634 made of synthetic resin or the like to close the opening portion.

  The conical tapered surface at the tip of the pressing screw 618 hits the second steel ball 632 and presses the second steel ball 632 by screwing the pressing screw 618 from the outside, and the second steel ball 632 and the second pressing ball The pin 631 is moved in the right direction in the figure. The end of the second pressing pin 631 has a conical tapered surface like the tip of the pressing screw 618, and the steel ball 616 is moved to the back in the direction perpendicular to the paper surface of the drawing by the movement of the second pressing pin 631. The steel ball 616 and the pressing pin 615 are moved by pressing. As a result, the pressing pin 615 moves in a direction protruding from the pin hole 614. As a result, the mounting block 61 is fixed in the groove 111.

  In the second embodiment, the moving direction of the pressing screw 618 is converted by 90 degrees to move the second pressing pin 631, and further converted by 90 degrees to move the pressing pin 615.

  If it does in this way, the freedom degree which determines the position or direction of the press screw 618 and the press pin 615 will increase, and it can be set as a more convenient position or direction. For example, in the case of the second embodiment, the pressing screw 618 can be rotated from the side (side surface) of the mounting block 61, and a tool can be inserted from the side even if there is no space above the detection device. Work can be done. Further, the protruding position of the pressing pin 615 can be determined corresponding to the position of the block holding portion 41 </ b> B of the holding member 41.

  In the embodiment described above, the tips of the pressing pins 515 and 615 are configured to indirectly press the bottom 112 of the groove 111 via the auxiliary plate 423. In this way, the pressing pins 515 and 615 are prevented from coming off, and the holding blocks 41 and 61 are fixed simultaneously with the fixing of the mounting blocks 51 and 61, so that backlash in mounting is further reduced. However, the pressing pins 515 and 615 may be separately prevented from coming off, and the tips of the pressing pins 515 and 615 may directly press the bottom 112 of the groove 111.

  Further, in the case of the mounting block 61, the protruding position of the pressing pin 615 can be determined corresponding to the position of the block holding portion 41B of the holding member 41, so that even if there is no auxiliary plate 423, the bottom surface portion 411 or The extended bottom surface portion 421 can prevent the pressing pin 615 from coming off.

  In the embodiment described above, the steel balls 616 and the second steel balls 632 may not be perfect spheres. These steel balls 516 and 616 or the second steel balls 632 may be made using a metal material other than a steel material. Further, a synthetic resin ball using a synthetic resin material or the like instead of the steel ball may be used.

  Further, the steel balls 516, 616 or the second steel balls 632 may be integrated with the pressing pins 515, 615 or the second pressing pin 631. In this case, what is integrated as such corresponds to the pressing member in the present invention.

  Further, the pressing pins 515 and 615 may be omitted, and the bottom 112 of the groove 111 may be pressed by the steel balls 516 and 616 themselves. That is, instead of the pressing pins 515 and 615, the steel balls 516 and 616 may be used, and the pressing screw 518 may be screwed to press the bottom surface portion 411 with only the steel balls 516 and 616 interposed therebetween. In that case, a plurality of steel balls 516 and 616 may be used instead of one. In this case, the steel balls 516 and 616 correspond to the pressing member of the present invention.

  In the embodiment described above, the detection device 3 is configured by connecting the three members of the detection switch 31, the holding member 41, and the mounting block 51 or 61. May be.

  In the above example, one detection device 3 is attached to one groove 111, but two or more detection devices 3 may be attached to one groove 111. In that case, by arranging the positions of the pressing screws 518 or 618 in each of the detection devices 3, the operation of adjusting the positions of the plurality of detection devices 3 can be performed more easily. For example, the position adjustment of the plurality of detection devices 3 may be performed from the same direction, or may be performed from a position close to the outside of the fluid pressure cylinder 1.

  In addition, the structure, configuration, shape, dimensions, number, material, etc. of the whole or each part of the detection switch 31, the holding member 41, the mounting blocks 51, 61, the detection device 3, or the fluid pressure cylinder 1 are in accordance with the spirit of the present invention. Can be changed as appropriate.

It is a top view of the fluid pressure cylinder which attached the detection apparatus which concerns on this invention. It is a front view of a fluid pressure cylinder. It is a front view of a detection apparatus. It is a top view of a detection apparatus. It is a bottom view of a detection apparatus. It is a right view of a detection apparatus. It is a left view of a detection apparatus. It is a front view of a holding member. It is a top view of a holding member. It is a right view of a holding member. It is a left view of a holding member. It is a top view of an attachment block. It is a cross-sectional top view of an attachment block. It is a section front view of an attachment block. It is a right view of an attachment block. It is a cross-sectional top view of the attachment block of 2nd Embodiment.

Explanation of symbols

1 Fluid Pressure Cylinder 3 Detector 11 Cylinder Tube (Cylinder Body)
31 Detection switch (detection device body)
41 Holding member 51 Mounting block 61 Mounting block 111 Groove 112 Bottom portion 411 Bottom surface portion 423 Auxiliary plate 514 Pin hole 515 Pressing pin 516 Steel ball (sphere)
517 Screw hole 518 Press screw 614 Pin hole 615 Press pin (press member)
616 Steel ball 617 Threaded hole 618 Press screw 630 Second pin hole 631 Second press pin 632 Second steel ball

Claims (6)

A fluid pressure cylinder has a mounting block inserted into a groove having a substantially T-shaped cross section provided on the outer peripheral surface of the cylinder body, and the detection device body is mounted on the cylinder body by fixing the mounting block in the groove. a mounting device configured detection device so that to detect the piston position in the fluid pressure cylinder Te,
The mounting block is provided with a pin hole that opens to a surface facing the bottom surface of the groove,
The pin hole is provided with a pressing member protruding from the pin hole and movable in the axial direction of the pin hole,
A sphere is arranged at the top of the pressing member in the pin hole,
Directly or by screwing a pressing screw provided in a threaded hole having an axis extending in a direction having an angle with respect to the axial direction of the pin hole and opening in the peripheral surface of the mounting block from the outside or The sphere is indirectly pressed to move the pressing member in a direction protruding from the pin hole, whereby the pressing member directly or indirectly presses the bottom surface of the groove, and the mounting block is moved into the groove. Configured to be fixed to the
An attachment device for a detection device. The pressing screw has a tapered conical portion at a tip portion, the tip portion is in contact with the sphere, and the sphere is directly pressed by screwing the pressing screw into the pressing member. Is moved in the direction protruding from the pin hole,
The attachment device of the detection apparatus of Claim 1. A second pin hole is provided between the threaded hole and the pin hole, and a second pressing member and a second sphere are provided in the second pin hole;
The tip of the pressing screw is in contact with the upper slope of the second sphere, and the screw is indirectly inserted through the second sphere and the second pressing member by screwing the pressing screw. Pressing the sphere to move the pressing member in a direction protruding from the pin hole,
The attachment device of the detection apparatus of Claim 1. The threaded hole has the shaft provided along the longitudinal direction of the groove, and is rotated by engaging a tool with the pressing screw from the direction along the longitudinal direction of the groove.
The attachment apparatus of the detection apparatus in any one of Claim 1 thru | or 3. The threaded hole has an axis provided along a direction perpendicular to the longitudinal direction of the groove and opens in a side surface of the mounting block, and is perpendicular to the longitudinal direction of the groove. The tool is engaged with the pressing screw and rotated from the side facing the side surface,
The attachment apparatus of the detection apparatus in any one of Claim 1 thru | or 3. The detection device body is integrated with the mounting block by being held by a holding member made of a metal material, and the holding member is fixed to the mounting block with screws.
A part of the holding member covers a part of the bottom surface of the mounting block;
The pressing member is configured to indirectly press the bottom surface of the groove through a part of the holding member.
The attachment device of the detection apparatus in any one of Claim 1 thru | or 5.

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