WO2016167035A1 - センサ取付具 - Google Patents
センサ取付具 Download PDFInfo
- Publication number
- WO2016167035A1 WO2016167035A1 PCT/JP2016/055993 JP2016055993W WO2016167035A1 WO 2016167035 A1 WO2016167035 A1 WO 2016167035A1 JP 2016055993 W JP2016055993 W JP 2016055993W WO 2016167035 A1 WO2016167035 A1 WO 2016167035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- band
- cylinder tube
- holder
- fixture
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 91
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 11
- 230000000630 rising effect Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
Definitions
- the present invention relates to a sensor attachment for attaching a sensor to the outer peripheral surface of a cylinder tube.
- a position sensor for detecting the position of a piston disposed in a cylinder tube is attached to the outer peripheral surface of a fluid pressure cylinder such as an air cylinder.
- a sensor attachment for attaching this position sensor to the outer peripheral surface of the cylinder tube for example, there is one disclosed in Japanese Patent Application Laid-Open No. 2012-122591.
- a sensor fixture (equipment fixture) disclosed in Japanese Patent Application Laid-Open No. 2012-122591 is provided with a mounting band disposed along an outer peripheral surface of a cylinder tube and a position sensor integrated with both ends of the mounting band. And a fixing bracket.
- the mounting band is provided with a tightening portion formed by folding back a part thereof, and a tightening screw is inserted through the insertion hole formed in each folded piece of the tightening portion, and tightening is performed through the insertion hole.
- a nut is screwed onto the screw.
- the fixing bracket integrated with the sensor holds the both ends of the mounting band, in order to adjust the mounting position of the position sensor with respect to the cylinder tube, It is necessary to shift the mounting band. Therefore, the operation of adjusting the mounting position of the sensor with respect to the cylinder tube is complicated and improvement is desired. Further, it is desirable that the sensor attachment has a compact configuration with a small protrusion from the outer peripheral surface of the cylinder tube.
- the present invention has been made in consideration of such problems, and an object of the present invention is to provide a sensor mounting tool that can easily adjust the mounting position of the sensor with respect to the cylinder tube and can be configured compactly.
- the present invention provides a sensor mounting tool for mounting a sensor on the outer peripheral surface of a cylinder tube, and has a rail-like shape having a sensor insertion groove for receiving and holding the sensor in an adjustable manner.
- the sensor fixture of the present invention configured as described above, since the sensor holder is formed in a rail shape and the tightening mechanism is provided at a position shifted from the sensor holder, the sensor is attached to the cylinder tube. Position adjustment can be easily performed and a compact configuration can be achieved.
- the tightening mechanism includes a female screw portion provided in the band portion, a tightening screw screwed into the female screw portion, and the band portion at a position corresponding to the female screw portion. And an abutting plate that is in contact with the outer peripheral surface of the cylinder tube and pressed by the tightening screw.
- the band portion can be easily tightened by tightening the tightening screw. Further, since the tightening screw does not directly contact the outer peripheral surface of the cylinder tube, deformation of the outer peripheral surface of the cylinder tube when the tightening screw is tightened can be effectively prevented.
- a nut having the female screw portion may be fixed to the band portion.
- This configuration makes it possible to easily provide a female screw portion into which the tightening screw is properly screwed.
- the sensor holder includes a holder main body and a connecting arm portion that protrudes from both sides of the holder main body and is provided with a hook, and the hook portion is provided at both ends of the band portion.
- An engagement hole capable of engaging is provided, and the tightening mechanism may be provided at a substantially central position in the extending direction of the band portion.
- the sensor holder and the band part can be easily connected.
- the tightening mechanism is located away from the engagement portion between the sensor holder and the band portion, it is preferable to suitably prevent the hook of the connecting arm portion from coming out of the engagement hole when tightening the tightening screw. Can do.
- the sensor holder includes a holder main body and an arm portion that protrudes laterally from the holder main body and bends, and the tightening mechanism includes a female screw provided on the arm portion.
- a fastening screw screwed into the female screw part, and a stopper provided at one end of the band part and pressed by the fastening screw.
- the one end portion of the band portion is provided with an opening penetrating in the thickness direction of the band portion, the arm portion is inserted through the opening portion, and the outside of the band portion. And may be opposed to the stopper.
- a nut having the female screw portion may be fixed to the arm portion.
- This configuration makes it possible to easily provide a female screw portion into which the tightening screw is properly screwed.
- the sensor holder includes a holder main body and a connecting arm portion that protrudes from both sides of the holder main body and is provided with a hook, and the hook portion is provided at both ends of the band portion.
- the band end portion does not come off from the hook of the sensor holder. Therefore, even if the tightening mechanism may be loosened, it is possible to prevent the sensor from falling off due to the band part coming off.
- the tightening mechanism is screwed into the female screw portion provided in the band portion and the female screw portion, and the cylinder in a state where the sensor attachment is attached to the cylinder tube.
- a tightening screw that contacts the outer peripheral surface of the tube, and the band portion is located at a position opposite to the tightening mechanism with respect to the cylinder tube in a state in which the sensor fixture is attached to the cylinder tube. Further, it may have a protruding portion protruding inward.
- the band portion may have another protruding portion protruding inward at a substantially central position between the tightening mechanism and the protruding portion.
- This configuration further distributes the force pressing the outer peripheral surface of the cylinder tube in the circumferential direction when the tightening mechanism is tightened. Thereby, the stick-slip phenomenon at the time of piston operation can be suppressed more effectively.
- the mounting position of the sensor with respect to the cylinder tube can be easily adjusted and a compact configuration can be achieved.
- FIG. 1 is a perspective view of a fluid pressure cylinder equipped with a sensor fixture according to a first embodiment of the present invention.
- FIG. 2 is a perspective view of the sensor attachment shown in FIG.
- FIG. 3 is an explanatory diagram of a structure for fixing the position sensor to the sensor holder.
- FIG. 4 is an explanatory diagram of a connection structure between the sensor holder and the band portion.
- FIG. 5 is an explanatory diagram of the structure of the tightening mechanism.
- FIG. 6 is a perspective view of a fluid pressure cylinder equipped with a sensor fixture according to the second embodiment of the present invention.
- 7 is an exploded perspective view of the sensor fixture shown in FIG.
- FIG. 8 is an enlarged view of a main part of the sensor fixture shown in FIG. FIG.
- FIG. 9 is a perspective view of a sensor fixture according to a third embodiment of the present invention.
- FIG. 10 is a front view of the sensor fixture shown in FIG.
- FIG. 11 is a perspective view of a sensor fixture according to a fourth embodiment of the present invention.
- FIG. 12 is a front view of the sensor fixture shown in FIG. 11.
- FIG. 13 is a perspective view of a sensor fixture according to a fifth embodiment of the present invention.
- 14 is a front view of the sensor fixture shown in FIG.
- the sensor fixture 10A As shown in FIG. 1, the sensor fixture 10A according to the first embodiment of the present invention is mounted on an outer peripheral surface 15 of a cylinder tube 14 of a fluid pressure cylinder 12 (for example, an air cylinder), and the position sensor 16 is attached to the above-described position sensor 16. Used to attach to the outer peripheral surface 15.
- a fluid pressure cylinder 12 for example, an air cylinder
- the fluid pressure cylinder 12 includes a cylindrical cylinder tube 14 having a cylinder hole therein, a piston accommodated in the cylinder tube 14 so as to be slidable along the central axis a, and an external piston connected to the piston. And a piston rod 20 extending to the front.
- pressure fluid for example, compressed air
- the piston moves forward or backward.
- a ring-shaped permanent magnet is attached to the outer periphery of the piston, and the position sensor 16 outputs a detection signal of the operating position of the piston by detecting the magnetism of the permanent magnet.
- the sensor fixture 10 ⁇ / b> A is wound around the outer peripheral surface 15 of the cylinder tube 14 connected to the sensor holder 28 and a rail-shaped sensor holder 28 for holding the position sensor 16.
- a band unit 30 and a tightening mechanism 32 for tightening the band unit 30 are provided.
- the sensor holder 28 is arranged with its longitudinal direction along the axial direction of the fluid pressure cylinder 12.
- the sensor holder 28 includes a rectangular bottom wall 34, side walls 36 a and 36 b erected from the long sides on both sides of the bottom wall 34 and facing each other, and a short on one end side of the bottom wall 34. And an end wall 38 erected from the side.
- the bottom wall 34 and the side walls 36a and 36b form a sensor insertion groove 40 for accommodating and holding the position sensor 16 so that the position of the position sensor 16 can be adjusted.
- Each side wall 36 a, 36 b is divided into two wall elements 37 that are separated from each other via a notch 39 in the longitudinal direction of the sensor holder 28.
- a protruding portion 42 that protrudes toward the inside of the sensor holder 28 is provided at an edge of the side walls 36 a and 36 b opposite to the bottom wall 34.
- the sensor holder 28 is made of metal such as stainless steel, and can be formed by pressing and bending a metal plate.
- the position sensor 16 is inserted and fixed in the sensor holder 28 configured as described above. As shown in FIG. 3, a nut 44 is inserted into one end of the position sensor 16 attached to the sensor holder 28, and a set screw 46 is screwed to the nut 44. Then, by tightening the set screw 46, the nut 44 is pressed against the projecting portion 42 protruding from the opening edge of the sensor holder 28 toward the inside of the sensor holder 28, so that the position sensor 16 is 28 is fixed. On the contrary, by loosening the set screw 46, the movement of the position sensor 16 is allowed along the sensor insertion groove 40, and fine adjustment in the axial direction (stroke direction) of the fluid pressure cylinder 12 is possible.
- the sensor holder 28 has two connecting arm portions 48 which protrude from both sides and bend. Specifically, in the present embodiment, the two connecting arm portions 48 protrude in opposite directions from the long sides of the bottom wall 34.
- Each connecting arm portion 48 is slightly inclined with respect to the bottom wall 34 of the sensor holder 28 so as to follow the outer peripheral surface 15 of the cylinder tube 14.
- a hook 50 bent upward is provided at the outer end of each connecting arm portion 48 (the end portion in the protruding direction from the bottom wall 34).
- Both ends of the band portion 30 can be connected to the sensor holder 28 and are configured to be attached to the outer peripheral surface 15 of the cylinder tube 14 along the circumferential direction.
- the band part 30 can be formed, for example, by bending and deforming a band-shaped thin metal plate in an arc shape.
- engagement holes 52 that can be engaged with the connecting arm portion 48 (specifically, the hook 50) of the sensor holder 28 penetrate the both ends of the band portion 30 in the thickness direction of the band portion 30. Is provided. As shown in FIG. 4, the hook 50 of the connecting arm portion 48 described above is inserted into the engaging hole 52, and the hook 50 is projected from the engaging hole 52 toward the outer peripheral side of the band portion 30, thereby connecting the connecting arm portion 48. And the end of the band part 30 are connected.
- the tightening mechanism 32 is disposed at a circumferential position different from the sensor holder 28 on the outer peripheral surface 15 of the cylinder tube 14. Specifically, in the present embodiment, the tightening mechanism 32 is disposed at a substantially central position in the extending direction (circumferential direction) of the band portion 30. Therefore, in a state where the sensor fixture 10 ⁇ / b> A is mounted on the outer peripheral surface 15 of the cylinder tube 14, the tightening mechanism 32 is disposed on the side opposite to the sensor holder 28 with respect to the cylinder tube 14.
- the tightening mechanism 32 includes a nut 56 fixed to the band portion 30 and formed with a female screw portion 54, a tightening screw 58 screwed into the female screw portion 54, and a tightening screw. And a contact plate 60 pressed by 58.
- the band portion 30 has a flat plate portion 62 at a portion where the nut 56 is fixed.
- the nut 56 is fixed to the inner surface 62a of the flat plate portion 62 (surface on the inner peripheral side of the band portion 30) by welding.
- the nut 56 may be fixed to the outer surface 62 b of the flat plate portion 62.
- a through hole 64 is formed in the flat plate portion 62.
- the fastening screw 58 is inserted without being screwed into the through hole 64.
- the head 66 of the tightening screw 58 is provided with a non-circular (cross, hexagonal, etc.) tool insertion groove so that the tightening screw 58 can be rotated by a tool such as a screwdriver or a hexagon wrench.
- the tip 67 of the tightening screw 58 can protrude from the nut 56 toward the contact plate 60.
- the contact plate 60 is provided on the inner side of the band portion 30 at a position corresponding to the female screw portion 54 (nut 56), and the outer peripheral surface of the cylinder tube 14 with the sensor attachment 10 ⁇ / b> A attached to the cylinder tube 14. 15 abuts.
- the contact plate 60 is branched from the inner peripheral surface of the band portion 30 or is joined to the inner peripheral surface and is cantilevered by the band portion 30.
- Such a backing plate 60 can be fixed to the inner peripheral surface of the band portion 30 by welding, for example.
- the position sensor 16 is inserted and fixed in the sensor holder 28, and the sensor fixture 10A in this state is attached to the cylinder tube 14.
- the sensor fixture 10A In this time, only one end portion of the band portion 30 is connected to the sensor holder 28 (one hook 50 is engaged with one engagement hole 52), and the tightening screw 58 is loosened, and the sensor attachment 10A.
- a hook 51 having a shape indicated by a virtual line in FIG. 4 may be provided.
- the hook 51 has an upright portion 51a that rises at a right angle from the outer end of the base portion 48a of the connecting arm portion 48, and a return portion 51b that protrudes from the upright portion 51a at a right angle toward the sensor holder 28.
- the angle of the upright portion 51a with respect to the base 48a is not limited to a right angle, and may be an angle close to a right angle (for example, 85 to 95 °).
- the angle of the return portion 51b with respect to the upright portion 51a is not limited to a right angle, and may be an angle close to a right angle (for example, 85 to 95 °).
- the sensor attachment 10A is along the outer peripheral surface 15 of the cylinder tube 14. Loosely arranged. In this state, the tightening screw 58 of the tightening mechanism 32 is tightened. Then, as the protruding length of the tip 67 of the fastening screw 58 from the nut 56 becomes longer, the portion of the band portion 30 where the fastening screw 58 is inserted (the flat plate portion 62) and the outer peripheral surface 15 of the cylinder tube 14 are obtained. And the distance will increase.
- the set screw 46 is loosened, and the position sensor 16 is slid in the longitudinal direction of the sensor holder 28 (the axial direction of the fluid pressure cylinder 12). Move to position. Then, the set screw 46 is tightened to fix the position sensor 16.
- the position sensor 16 is not fixed to the sensor holder 28 after the sensor fixture 10A in a state where the position sensor 16 is not fixed to the sensor holder 28 is loosely disposed along the outer peripheral surface 15 of the cylinder tube 14.
- the position sensor 16 may be fixed to the sensor holder 28 after the sensor fixture 10A in the state is arranged on the outer peripheral surface 15 of the cylinder tube 14 and the tightening screw 58 is tightened.
- the sensor holder 28 is formed in a rail shape, and the tightening mechanism 32 is provided at a position shifted from the sensor holder 28 in the circumferential direction.
- the mounting position of the position sensor 16 with respect to can be easily adjusted and can be configured compactly.
- the tightening mechanism 32 includes a female screw portion 54 provided in the band portion 30, a tightening screw 58 screwed into the female screw portion 54, and a position corresponding to the female screw portion 54. It has an abutting plate 60 that is provided inside the band portion 30, abuts against the outer peripheral surface 15 of the cylinder tube 14, and is pressed by a fastening screw 58. With this configuration, the band portion 30 can be easily tightened by tightening the tightening screw 58. In addition, a contact plate 60 is interposed between the outer peripheral surface 15 of the cylinder tube 14 and the tightening screw 58, and the tightening screw 58 does not directly contact the outer peripheral surface 15 of the cylinder tube 14. It is possible to effectively prevent deformation of the outer peripheral surface 15 of the cylinder tube 14 when the attached screw 58 is tightened.
- the nut 56 in which the female screw portion 54 is formed is fixed to the band portion 30, the female screw portion 54 to which the tightening screw 58 is appropriately screwed is easily provided. Can do. That is, it is difficult to directly form a screw hole in the thin band part 30, while it is easy to fix the nut 56 to the band part 30.
- the sensor holder 28 includes the holder main body 29 and the connecting arm portion 48 that protrudes from both sides of the holder main body 29 and is bent, so that the sensor holder 28 and the band portion 30 can be easily connected. It can be carried out. Further, engagement holes 52 that can be engaged with the connecting arm portion 48 are provided at both ends of the band portion 30, and the tightening mechanism 32 is provided at a substantially central position in the extending direction of the band portion 30. For this reason, the tightening mechanism 32 is located away from the position where the sensor holder 28 and the band portion 30 are engaged. Therefore, the position sensor 16 is securely attached to the outer peripheral surface 15 of the cylinder tube 14 by preventing the hook 50 of the connecting arm portion 48 from coming out of the engagement hole 52 when the tightening screw 58 is tightened. Can do.
- the sensor fixture 10 ⁇ / b> B according to the second embodiment of the present invention is attached to the outer peripheral surface 15 of the cylinder tube 14 of the fluid pressure cylinder 12 (for example, an air cylinder), and the position sensor 16 is connected to the above-described position sensor 16. Used to attach to the outer peripheral surface 15.
- the fluid pressure cylinder 12 for example, an air cylinder
- the sensor fixture 10 ⁇ / b> B is connected to the sensor holder 70 at the first end 74 a and the second end 74 b and is wound around the outer peripheral surface 15 of the cylinder tube 14 to hold the position sensor 16.
- the sensor holder 70 has a holder main body 78 and an arm portion 80 that protrudes laterally from the holder main body 78 and is bent.
- the holder main body 78 includes a rectangular bottom wall 34, first and second side walls 82 a and 82 b that are erected from the long sides on both sides of the bottom wall 34 and face each other, and a short side on one end side of the bottom wall 34. And an end wall 38 standing upright.
- the bottom wall 34, the first side wall 82a, and the second side wall 82b form a sensor insertion groove 40 for accommodating and holding the position sensor 16 so that the position of the position sensor 16 can be adjusted.
- a protruding portion 42 that protrudes toward the inside of the sensor holder 70 is provided at the edge of the first side wall 82 a and the second side wall 82 b opposite to the bottom wall 34.
- connection hole 86 as a connection portion with the second end portion 74b of the band portion 74 is provided in the root portion of the second side wall 82b so as to penetrate in the thickness direction of the second side wall 82b.
- the connection hole 86 includes an insertion hole 86a that extends in the longitudinal direction of the holder body 78, and a locking hole 86b that is formed closer to the bottom wall 34 than the insertion hole 86a and is narrower than the insertion hole 86a.
- the arm portion 80 includes a protruding portion 88 that protrudes laterally from the bottom wall 34 of the holder main body 78 with a slight downward inclination, and a rising piece 90 that is bent upward from an end portion of the protruding portion 88 in the protruding direction.
- the rising piece 90 is formed with an insertion hole 92 penetrating in the thickness direction of the rising piece 90.
- Such a sensor holder 70 is made of metal such as stainless steel, for example, and can be formed by pressing and bending a metal plate.
- the method for fixing the position sensor 16 to the sensor holder 70 is the same as in the first embodiment described above.
- the band portion 74 has a first end portion 74a and a second end portion 74b, and can be connected to the sensor holder 70 at the first end portion 74a and the second end portion 74b. It is comprised so that it may mount
- the first end portion 74 a of the band portion 74 can be connected to the sensor holder 70 via the tightening mechanism 76.
- the band part 74 can be formed by, for example, bending and deforming a band-shaped thin metal plate in an arc shape.
- the first end portion 74 a of the band portion 74 is provided with an opening portion 94 that penetrates in the thickness direction of the band portion 74.
- the arm portion 80 described above is inserted into the opening portion 94 from the inside of the band portion 74, and the rising piece 90 is opposed to a stopper 106 described later of the tightening mechanism 76 on the outside of the band portion 74. .
- the second end portion 74 b of the band portion 74 is provided with a T-shaped locking portion 96 that can be connected to the connection hole 86 of the sensor holder 70.
- the locking portion 96 includes a base portion 98 and locking protrusions 100 protruding from the base portion 98 on both sides in the width direction of the band portion 74.
- the tightening mechanism 76 includes a nut 102 fixed to the arm portion 80 and formed with a female screw portion 103, a tightening screw 104 screwed into the nut 102, and a band portion. And a stopper 106 which is provided at a first end 74 a of 74 and is pressed by a tightening screw 104.
- the nut 102 is fixed to the surface 90a of the rising piece 90 on the holder main body 78 side by welding.
- the nut 102 may be fixed to the surface 90 b of the rising piece 90 on the side opposite to the holder main body 78.
- the tightening screw 104 is inserted into the insertion hole 92 provided in the rising piece 90 without being screwed.
- a non-circular (cross, hexagonal, etc.) tool insertion groove 109 is provided on the head 108 of the tightening screw 104 so that the tightening screw 104 can be rotated by a tool such as a screwdriver or a hexagon wrench. .
- the tip 105 of the tightening screw 104 can protrude from the nut 102 toward the stopper 106.
- the stopper 106 provided in the 1st end part 74a of the band part 74 is metal, for example, and is being fixed to the 1st end part 74a by welding.
- the stopper 106 is disposed between the holder main body 78 and the rising piece 90 of the sensor holder 70 and is pressed toward the holder main body 78 by the tightening screw 104.
- the position sensor 16 is inserted and fixed to the sensor holder 70, and the sensor fixture 10B in this state is attached to the cylinder tube 14. It arranges loosely along the outer peripheral surface 15 of the.
- the arm portion 80 of the sensor holder 70 is inserted into the opening portion 94 of the band portion 74 so that the stopper 106 is disposed between the holder body 78 and the tightened screw 104 in the loosened state, and the band portion
- the second end portion 74 b (locking portion 96) of 74 is connected to the second side wall 82 b (connecting hole 86) of the sensor holder 70, and the band portion 74 is wound along the outer peripheral surface 15 of the cylinder tube 14.
- the tightening screw 104 of the tightening mechanism 76 is tightened. Then, as the protruding length from the nut 102 of the tip 105 of the tightening screw 104 increases, the distance between the rising piece 90 and the stopper 106 increases. As a result, tension is applied to the band portion 74, that is, the band portion 74 is tightened, and the sensor holder 70 is strongly attracted to the outer peripheral surface 15 of the cylinder tube 14. Thereby, the position sensor 16 is attached to the outer peripheral surface 15 of the cylinder tube 14. In this case, since the sensor holder 70 and the tightening mechanism 76 are arranged so as to be shifted from each other in the circumferential direction, the protrusion from the outer peripheral surface 15 of the cylinder tube 14 can be small.
- the position sensor 16 is not fixed to the sensor holder 70 after the sensor fixture 10B in a state where the position sensor 16 is not fixed to the sensor holder 70 is loosely disposed along the outer peripheral surface 15 of the cylinder tube 14.
- the position sensor 16 may be fixed to the sensor holder 70 after the sensor fixture 10B in the state is arranged on the outer peripheral surface 15 of the cylinder tube 14 and the tightening screw 104 is tightened.
- the set screw 46 is loosened, and the position sensor 16 is slid in the longitudinal direction of the sensor holder 70 (the axial direction of the fluid pressure cylinder 12). Move to position. Then, the set screw 46 is tightened to fix the position sensor 16.
- the sensor holder 70 is formed in a rail shape and the tightening mechanism 76 is provided at a position shifted in the circumferential direction from the sensor holder 70.
- the mounting position of the position sensor 16 with respect to can be easily adjusted and can be configured compactly.
- the tightening mechanism 76 includes a female screw portion 103 provided on the arm portion 80 of the sensor holder 70, a tightening screw 104 screwed into the female screw portion 103, and one end of the band portion 74. And a stopper 106 which is provided at the portion and is pressed by the tightening screw 104.
- the band portion 74 can be easily tightened by tightening the tightening screw 104.
- the tightening screw 104 does not directly contact the outer peripheral surface 15 of the cylinder tube 14, deformation of the outer peripheral surface 15 of the cylinder tube 14 when the tightening screw 104 is tightened can be effectively prevented.
- the arm portion 80 is inserted into the opening portion 94 and faces the stopper 106 outside the band portion 74, a tension can be suitably applied to the band portion 74.
- the nut 102 in which the female screw portion 103 is formed is fixed to the arm portion 80, the female screw portion 103 into which the fastening screw 104 is appropriately screwed can be easily provided.
- the sensor fixture 10 ⁇ / b> C As shown in FIG. 9, the sensor fixture 10 ⁇ / b> C according to the fourth embodiment of the present invention is attached to the outer peripheral surface 15 of the cylinder tube 14 and the position sensor 16 is attached to the outer peripheral surface 15 in the same manner as the preceding embodiment. Used for mounting.
- This sensor fixture 10C is a modification to the sensor fixture 10A according to the first embodiment.
- the sensor fixture 10 ⁇ / b> C will be described focusing on portions different from the sensor fixture 10 ⁇ / b> A.
- the cylinder tube 14 is simplified and indicated by a virtual line. The same applies to FIGS. 11 and 13.
- the sensor fixture 10 ⁇ / b> C includes a rail-shaped sensor holder 28 for holding the position sensor 16, and a band part 110 that is removably connected to the sensor holder 28 and wound around the outer peripheral surface 15 of the cylinder tube 14. And a tightening mechanism 112 for tightening the band part 110.
- the configuration of the sensor holder 28 of the sensor fixture 10C is the same as that of the sensor holder 28 in the sensor fixture 10A.
- the band unit 110 includes a band main body 114 extending in a band shape, and reinforcing plates 116 connected to both end portions of the band main body 114, and these reinforcing plates 116 are band end portions 118 that are both end portions of the band unit 110. Is configured.
- Each band end portion 118 is provided with an engagement hole 120 that can engage with the hook 50 of the sensor holder 28 in the thickness direction of the reinforcing plate 116.
- each hook 50 is on the holder main body 29 side with respect to the normal line of the outer peripheral surface 15 where the hook 50 is located. Inclined.
- a hook 51 may be employed instead of the one hook 50 (see FIGS. 12 and 14).
- the tightening mechanism 112 is provided on the band main body 114. Further, the tightening mechanism 112 is provided at a position relatively close to the band end portion 118. In this case, the angle around the center of the cylinder tube 14 between the center of the engagement hole 120 and the center of the tightening mechanism 112 is, for example, 90 ° or less, preferably 45 ° or less. With this configuration, when the sensor fixture 10 ⁇ / b> C is attached to the cylinder tube 14, the fastening mechanism 112 is disposed at a position close to the sensor holder 28, and thus the fastening mechanism 112 can be easily operated.
- the tightening mechanism 112 includes a nut 124 that is fixed to the band main body 114 and formed with a female screw portion 122, and a tightening screw 126 that is screwed into the female screw portion 122.
- the band main body 114 has a flat plate portion 128 at a portion where the nut 124 is fixed.
- the nut 124 is joined and fixed to the outer surface of the flat plate portion 128.
- a through hole (not shown) is formed in the flat plate portion 128, and the tightening screw 126 is inserted without being screwed into the through hole.
- the tip 127 of the tightening screw 126 can project from the flat plate portion 128 to the inside of the band portion 110 (on the cylinder tube 14 side).
- the tip 127 of the tightening screw 126 contacts the outer peripheral surface 15 of the cylinder tube 14.
- the sensor fixture 10C according to the present embodiment has the following operational effects.
- the band end 118 is engaged with the hook 50 because the edge of the band end 118 abuts against the position sensor 16. Cannot move to the position where is released. For this reason, in a state where the position sensor 16 is mounted on the sensor holder 28, the band end portion 118 is prevented from coming off the hook 50 due to interference with the position sensor 16. That is, unless the position sensor 16 is removed from the sensor holder 28, the band end portion 118 does not come off from the hook 50 of the sensor holder 28. Accordingly, even if the tightening screw 126 of the tightening mechanism 112 is loosened or the tightening screw 126 is dropped, the band sensor 110 is removed and the position sensor 16 is prevented from dropping from the cylinder tube 14. be able to.
- a sensor fixture 10D according to the fourth embodiment of the present invention shown in FIGS. 11 and 12 is a modification of the above-described sensor fixture 10C. Specifically, the band portion 110a of the sensor fixture 10D is positioned on the opposite side of the tightening mechanism 112 with respect to the cylinder tube 14 in a state where the sensor fixture 10D is attached to the outer peripheral surface 15 of the cylinder tube 14 (cylinder A protrusion 130 protruding inward is provided at a position shifted by approximately 180 ° or 175 ° to 185 ° around the center of the tube 14. In this case, the center of the tightening screw 126 a is the position of the tightening mechanism 112, and the top of the protrusion 130 is the position of the protrusion 130.
- the protrusion 130 in the illustrated example is formed by deforming a part of the band body 114 in the circumferential direction inwardly, and is curved in an arc shape.
- the protrusion 130 may be a member fixed to the inner peripheral surface of the band main body 114 by appropriate fixing means (welding or the like). In FIG. 11, both ends of a linear groove 129 for tool insertion provided at the head of the tightening screw 126a are closed by the peripheral wall of the tightening screw 126a.
- the outer peripheral surface 15 protrudes inside the band portion 110 when the band portion 110a is tightened. Only the tightening screw 126 is a structure that strongly hits. For this reason, in the outer peripheral surface 15 of the cylinder tube 14, a load concentrates on the part where the fastening screw 126 abuts, and it is easy to generate a concave deformation in the part. If the concave deformation exceeds a certain size, the deformed portion may interfere with the piston disposed in the cylinder tube 14 and a stick-slip phenomenon (knocking) may occur when the piston is operated.
- a protrusion 130 is provided on the band portion 110 on the opposite side of the tightening mechanism 112 (the tightening screw 126a). For this reason, when the tightening mechanism 112 is tightened, not only the tightening screw 126 but also the protrusion 130 abuts against the outer peripheral surface 15 of the cylinder tube 14. Therefore, when the tightening mechanism 112 is tightened, the force that presses the outer peripheral surface 15 of the cylinder tube 14 is moderately dispersed in the circumferential direction, and the concave deformation on the outer peripheral surface 15 is suppressed compared to the case where there is no protrusion 130. The shape (roundness) of the cylinder tube 14 can be corrected. Thereby, the stick-slip phenomenon at the time of piston operation can be suppressed.
- a slit 131 that extends through the band body 114 in the thickness direction and extends in the extending direction of the band body 114 may be provided in the band portion 110 a.
- the slit 131 may be provided in a portion of the band main body 114 between the tightening mechanism 112 and the protruding portion 130 and a portion between the protruding portion 130 and the band end portion 118.
- a sensor fixture 10E according to the fifth embodiment of the present invention shown in FIGS. 13 and 14 is a modified example of the above-described sensor fixture 10D, and is an embodiment in which another protrusion 132 is added.
- the band portion 110b of the sensor fixture 10E has a substantially central position between the tightening mechanism 112 and the protrusion 130 (generally in the circumferential direction from the tightening screw 126 around the cylinder tube 14 disposed inside).
- Another protrusion 132 protruding inward is provided at a position shifted by 90 °.
- the center of the tightening screw 126 is the position of the tightening mechanism 112
- the top of the protrusion 132 is the position of the protrusion 132.
- the protrusion 132 in the illustrated example is formed by deforming a part of the band main body 114 in the circumferential direction, and is curved in an arc shape.
- the protrusion 132 may be a member fixed to the inner peripheral surface of the band main body 114 by appropriate fixing means (welding or the like).
- the band portion 110 b may be provided with a slit 133 that penetrates the band main body 114 in the thickness direction and extends in the extending direction of the band main body 114.
- the slit 133 is formed between the portion between the tightening mechanism 112 and the protruding portion 132, the portion between the protruding portion 130 and the protruding portion 132, and the protruding portion 130 and the band end portion 118.
- Each may be provided in the middle part.
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Abstract
Description
図1に示すように、本発明の第1実施形態に係るセンサ取付具10Aは、流体圧シリンダ12(例えば、エアシリンダ)のシリンダチューブ14の外周面15に装着されて、位置センサ16を上記外周面15に取り付けるために使用される。
図6に示すように、本発明の第2実施形態に係るセンサ取付具10Bは、流体圧シリンダ12(例えば、エアシリンダ)のシリンダチューブ14の外周面15に装着されて、位置センサ16を上記外周面15に取り付けるために使用される。
図9に示すように、本発明の第4実施形態に係るセンサ取付具10Cは、先行する実施形態と同様に、シリンダチューブ14の外周面15に装着されて、位置センサ16を外周面15に取り付けるために使用される。このセンサ取付具10Cは、第1実施形態に係るセンサ取付具10Aに対する変形例である。以下、このセンサ取付具10Cについて、センサ取付具10Aと異なる部分を中心に説明する。なお、図9では、シリンダチューブ14を簡略化して仮想線で示している。図11及び図13についても同様である。
図11及び図12に示す本発明の第4実施形態に係るセンサ取付具10Dは、上述したセンサ取付具10Cに対する変形例である。具体的に、このセンサ取付具10Dのバンド部110aは、センサ取付具10Dがシリンダチューブ14の外周面15に取り付けられた状態におけるシリンダチューブ14を基準として締付機構112の反対側の位置(シリンダチューブ14の中心周りに略180°あるいは175°~185°ずれた位置)に、内側に突出する突起部130を有する。この場合、締付ネジ126aの中心を締付機構112の位置とし、突起部130の頂部を当該突起部130の位置とする。
図13及び図14に示す本発明の第5実施形態に係るセンサ取付具10Eは、上述したセンサ取付具10Dに対する変形例であって、別の突起部132を追加した実施形態である。具体的に、センサ取付具10Eのバンド部110bは、締付機構112と突起部130との間の略中央位置(内側に配置されるシリンダチューブ14を中心として締付ネジ126から周方向に略90°ずれた位置)に、内側に突出する別の突起部132を有する。この場合、締付ネジ126の中心を締付機構112の位置とし、突起部132の頂部を突起部132の位置とする。
Claims (10)
- シリンダチューブ(14)の外周面(15)にセンサ(16)を取り付けるためのセンサ取付具(10A~10E)であって、
前記センサ(16)を位置調整可能に収容保持するためのセンサ挿入溝(40)を有するレール状のセンサホルダ(28、70)と、
両端部が前記センサホルダ(28、70)に連結可能であり、前記シリンダチューブ(14)の外周面(15)に周方向に沿って装着されるように構成されたバンド部(30、74、110、110a、110b)と、
前記シリンダチューブ(14)の外周面(15)において前記センサホルダ(28、70)とは異なる周方向位置に配置され、前記バンド部(30、74、110、110a、110b)を締め付ける締付機構(32、76、112)と、を備える、
ことを特徴とするセンサ取付具(10A~10E)。 - 請求項1記載のセンサ取付具(10A)において、
前記締付機構(32)は、前記バンド部(30)に設けられた雌ネジ部(54)と、前記雌ネジ部(54)に螺合する締付ネジ(58)と、前記雌ネジ部(54)に対応する位置において前記バンド部(30)の内側に設けられ前記シリンダチューブ(14)の外周面(15)に当接し且つ前記締付ネジ(58)により押圧される当て板(60)とを有する、
ことを特徴とするセンサ取付具(10A)。 - 請求項2記載のセンサ取付具(10A)において、
前記バンド部(30)には、前記雌ネジ部(54)が形成されたナット(56)が固着されている、
ことを特徴とするセンサ取付具(10A)。 - 請求項2記載のセンサ取付具(10A)において、
前記センサホルダ(28)は、ホルダ本体(29)と、前記ホルダ本体(29)の両側方から突出するとともにフック(50、51)が設けられた連結腕部(48)とを有し、
前記バンド部(30)の両端部には、前記フック(50、51)が係合可能な係合孔(52)が設けられ、
前記締付機構(32)は、前記バンド部(30)の延在方向の略中央位置に設けられている、
ことを特徴とするセンサ取付具(10A)。 - 請求項1記載のセンサ取付具(10B)において、
前記センサホルダ(70)は、ホルダ本体(78)と、前記ホルダ本体(78)から側方に突出するとともに屈曲した腕部(80)とを有し、
前記締付機構(76)は、前記腕部(80)に設けられた雌ネジ部(103)と、前記雌ネジ部(103)に螺合する締付ネジ(104)と、前記バンド部(74)の一端部に設けられ前記締付ネジ(104)により押圧されるストッパ(106)とを有する、
ことを特徴とするセンサ取付具(10B)。 - 請求項5記載のセンサ取付具(10B)において、
前記バンド部(74)の前記一端部には、前記バンド部(74)の厚さ方向に貫通する開口部(94)が設けられ、
前記腕部(80)は、前記開口部(94)に挿通され、前記バンド部(74)の外側で前記ストッパ(106)と対向している、
ことを特徴とするセンサ取付具(10B)。 - 請求項5記載のセンサ取付具(10B)において、
前記腕部(80)には、前記雌ネジ部(103)が形成されたナット(102)が固着されている、
ことを特徴とするセンサ取付具(10B)。 - 請求項1記載のセンサ取付具(10C~10E)において、
前記センサホルダ(28)は、ホルダ本体(29)と、前記ホルダ本体(29)の両側方から突出するとともにフック(50、51)が設けられた連結腕部(48)とを有し、
前記バンド部(110)の両端部には、前記フック(50、51)が係合可能な係合孔(120)を有するバンド端部(118)が設けられ、
前記センサ(16)が前記ホルダ本体(29)に装着された状態では、前記バンド端部(118)は前記センサ(16)との干渉によって前記フック(50、51)から外れることが阻止される、
ことを特徴とするセンサ取付具(10C~10E)。 - 請求項1記載のセンサ取付具(10D、10E)において、
前記締付機構(112)は、前記バンド部(110a、110b)に設けられた雌ネジ部(122)と、前記雌ネジ部(122)に螺合し、前記センサ取付具(10D、10E)が前記シリンダチューブ(14)に取り付けられた状態で前記シリンダチューブ(14)の外周面(15)に当接する締付ネジ(126、126a)とを有し、
前記バンド部(110a、110b)は、前記センサ取付具(10D、10E)が前記シリンダチューブ(14)に取り付けられた状態における前記シリンダチューブ(14)を基準として前記締付機構(112)の反対側の位置に、内側に突出する突起部(130)を有する、
ことを特徴とするセンサ取付具(10D、10E)。 - 請求項9記載のセンサ取付具(10E)において、
前記バンド部(110b)は、前記締付機構(112)と前記突起部(130)との間の略中央位置に、内側に突出する別の突起部(132)を有する、
ことを特徴とするセンサ取付具(10E)。
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US15/565,909 US10138914B2 (en) | 2015-04-16 | 2016-02-29 | Sensor attachment tool |
CN201680021484.5A CN107532625B (zh) | 2015-04-16 | 2016-02-29 | 传感器附接工具 |
MX2017013246A MX2017013246A (es) | 2015-04-16 | 2016-02-29 | Herramienta de fijacion de sensor. |
EP16779827.1A EP3284957B1 (en) | 2015-04-16 | 2016-02-29 | Sensor attachment tool |
RU2017139544A RU2699596C9 (ru) | 2015-04-16 | 2016-02-29 | Приспособление для крепления датчика (варианты) |
KR1020177032640A KR101957261B1 (ko) | 2015-04-16 | 2016-02-29 | 센서 설치도구 |
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