JP6749682B1 - Pin gauge adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pin gauge adapter which can be manufactured at a low cost with a simple configuration, does not care about a defect such as a failure, and can easily and surely make a measurer perceive a pass / fail judgment. SOLUTION: A pin gauge adapter 1 according to the present invention is a pin gauge adapter 1 including a gauge holding portion 31, a moving portion 33, and an urging portion 41, and a main body portion 2 has a reference guide hole 26 on an outer surface thereof. The gauge holding portion 31 holds the pin gauge P and is formed so as to be able to move forward and backward in the axial direction of the pin gauge P. The urging portion 41 has a protruding portion 37 formed so as to freely form and project outward from the reference guide hole 26 when the main body portion 2 moves to the rear end side by a predetermined length, and the urging portion 41 moves in and out of the moving portion 33. It is characterized in that the moving portion 33 is configured to apply an urging force against the movement of the main body portion 2 toward the rear end side. [Selection diagram] Fig. 1

Description

The present invention relates to a pin gauge adapter capable of suppressing variation in inner diameter measurement using a manual pin gauge with a simple configuration.

Conventionally, various holes formed in machined parts that require precision have various pin gauges corresponding to the inside diameter gripped by the measurer, and the pin gauge is not loaded from above the hole to be measured and is accurate without rattling. Whether or not the inner diameter was acceptable was judged by whether or not it could be inserted into the.

However, since the measurer himself inserts the pin gauge into the hole to be measured, for example, for a hole that would otherwise be rejected if it was processed to a diameter slightly smaller than the design value, a pin gauge with the diameter as designed If a force is applied to the insertion force, the insertion may be forced, and there is a problem in that the skill and personality of the measurer are influenced to a certain extent.

In addition, since the pin gauge only slightly grips manually, the body temperature is transmitted and the pin gauge expands slightly.Therefore, for example, a pin gauge having a diameter as designed may not be inserted into a hole as designed, so It was also feared that the measurement accuracy would be complicatedly affected as well as the proficiency level.

In such a situation, it is common practice to cover the pin gauge with a material having low thermal conductivity and to hold it against expansion of the pin gauge due to heat conduction. The following techniques have been disclosed regarding the variation in accuracy.

For example, the technique according to Patent Document 1 includes a pin gauge, a transmission rod on which the pin gauge is mounted, and a holder that holds the transmission rod slidably in the axial direction of the pin gauge, and detects the pin gauge insertion force transmitted from the pin gauge to the transmission rod. It is a pin gauge device provided with a part.

In the present technology, the detection unit is configured by a limit switch or a load cell so that the insertion force of the pin gauge is electrically detected and judged, and a buzzer sounds as an alarm when the predetermined insertion force is exceeded.

Further, for example, the technique according to Patent Document 2 requires a required portion between a mounting portion in which a pin gauge to be inserted into a hole of an object to be measured is mounted and a gripping portion gripped by a measurer or a measuring tool holder. It is an in-hole dimension measuring tool in which an elastic member having an elastic force is interposed.

In the present technology, the pin gauge is inserted into the hole to be measured with an insertion force that is equal to or less than the biasing force defined by the elastic member.

Japanese Utility Model Publication No. 63-054005 Japanese Utility Model Publication No. 01-156401

Certainly, according to the technique described in Patent Document 1, it is excellent in that it can be easily judged regardless of the skill level of the measurer in that the judgment of pass/fail is notified by the buzzer. Even if a failure occurs in an electric component such as a limit sensor, the failure cannot be recognized as much as possible, resulting in a risk that a large amount of misidentified products will flow out to the next process.

In addition, since the pin gauge device itself becomes expensive to some extent by using electrical parts, it is costly when it is necessary to prepare a large number of pin gauge devices depending on the number of measurers and the number of holes in the processed parts. Will be at a disadvantage.

Further, according to the technique described in Patent Document 2, it is theoretical in that it is possible to judge whether the pin gauge can be inserted into the hole to be measured with an insertion force equal to or less than the biasing force defined by the elastic member. However, in reality, the pin gauge is measuring with a normal insertion force that moves inside the measuring tool within the range of the biasing force of the elastic member, and the insertion force that exceeds the specified biasing force, that is, the measurement This is a problem in that the measurer is not configured to accurately determine the two situations in which the pin gauge cannot move any more in the tool.

Therefore, even if the measurement is performed using this measuring tool, in order to judge the above-mentioned two situations, the measurer grasps this measuring tool and considers the resistance force when inserting the pin gauge into the hole to be measured. Since it is necessary to judge the normal insertion force and the other insertion forces with the sense of the finger of the measurer, there still remains a problem that the skill and personality of the measurer are influenced to a certain extent.

Furthermore, it is easy to intuitively learn the insertion force when performing measurements by directly grasping the pin gauge, but it is extremely difficult to handle because it is necessary to make a judgment including the extra bias by interposing an elastic member. It cannot be expected to have the effect of improving the variation in measurement.

The present invention has been made in view of the above circumstances, can be manufactured at a low cost with a simple configuration without worrying about malfunctions such as failure, and moreover, the pass/fail judgment can be easily and surely made by a measurer. It is to provide a pin gauge adapter that can be perceived.

In order to achieve the above objects, the present invention provides the following techniques.

In the invention according to claim 1, there is provided a pin gauge adapter including a main body portion having an outer shape that can be manually held, a gauge holding portion, a moving portion, and a biasing portion that are internally provided in the main body portion. The main body part has a gauge insertion hole for inserting and removing the pin gauge at the tip, and a reference guide hole is bored on the outer surface, and the gauge holding part holds the pin gauge and can move back and forth in the axial direction of the pin gauge. The moving portion is formed so as to move forward and backward in the axial direction of the pin gauge in conjunction with the forward and backward movement of the gauge holding portion, and when the moving portion moves to the rear end side of the main body by a predetermined length, the moving portion moves outward from the reference guide hole. And a biasing portion configured to apply a biasing force against the movement of the moving portion to the rear end side of the main body portion when the moving portion advances and retracts. We do not provide a characteristic pin gauge adapter.

In the invention according to claim 2, the reference guide hole is formed in the rear end surface of the main body portion, and the pin gauge adapter according to claim 1 is provided.

In the invention according to claim 3, the reference guide hole is formed on a peripheral side surface of the main body portion, and the pin gauge adapter according to claim 1 or 2 is provided.

In the invention according to claim 4, the main body portion is a hollow main body base portion penetrating from the gauge insertion hole at the front end to the rear end, and a sealing portion detachably formed on the rear end of the main body base portion. The pin gauge adapter according to any one of claims 1 to 3 is provided.

In the invention according to claim 5, the main body base portion includes an insertion portion forming a tip side including the gauge insertion hole, and a base portion forming a gap between the insertion portion and the sealing portion, and the insertion portion includes The pin gauge adapter according to claim 4, wherein the pin gauge adapter is detachably formed on the base portion, the gauge holding portion is formed of a magnet, and the biasing portion is formed of a compression coil spring.

According to the invention of claim 1, there is provided a pin gauge adapter including a main body portion having an outer shape that can be manually held, a gauge holding portion, a moving portion, and a biasing portion provided inside the main body portion. The main body has a gauge insertion hole that allows the pin gauge to be inserted and removed, and a reference guide hole is formed on the outer surface, and the gauge holder holds the pin gauge and can be moved back and forth in the axial direction of the pin gauge. The moving part is formed so as to be movable back and forth in the axial direction of the pin gauge in conjunction with the forward and backward movement of the gauge holding part, and to be projected to the outside from the reference guide hole when moved to the rear end side of the main body by a predetermined length. Since the urging portion has a projecting portion and is configured to apply an urging force against the movement of the moving portion to the rear end side of the main body when the moving portion advances and retracts, the urging portion can be manufactured with a simple structure at low cost. It is possible to perceive that the pin gauge is being loaded with an insertion force above the specified value by not touching the fingers of the measurer holding the main body and touching the protruding part without worrying about malfunctions such as breakdowns. The pass/fail judgment can be easily and surely made without depending on the skill level of the person.

According to the second aspect of the present invention, the reference guide hole is formed on the rear end surface of the main body. Therefore, the pin gauge can be inserted with a force more than the specified value simply by gripping the finger while contacting the rear end surface and performing measurement. If a load is applied to the finger, the finger touches the protruding portion as much as possible, so that it is possible to easily and surely determine whether the result is acceptable or not.

According to the invention described in claim 3, since the reference guide hole is formed on the peripheral side surface of the main body portion, the pin gauge with an insertion force more than the specified value can be obtained simply by gripping the finger while contacting the peripheral side surface and performing measurement. If a load is applied to the finger, the finger touches the protruding portion as much as possible, so that it is possible to easily and surely determine whether the result is acceptable or not.

According to the invention of claim 4, the main body portion includes a hollow main body base portion that penetrates from the gauge insertion hole at the front end to the rear end, and a sealing portion that is detachably formed at the rear end of the main body base portion. Therefore, it is possible to insert and assemble components such as the gauge holding part, moving part, and urging part from the rear end of the main body base, and the sealing part stabilizes these members inside the main body. Can be installed internally.

In addition, it is possible to easily disassemble and respond when a defect occurs in a component member or during adjustment or maintenance.

According to the fifth aspect of the present invention, the main body base portion includes an insertion portion on the distal end side including the gauge insertion hole, and a base portion forming a gap between the insertion portion and the sealing portion, and the insertion portion is detachable from the base portion. Since the gauge holding part is made of a magnet and the biasing part is made of a compression coil spring, the diameter of the pin gauge to be used can be adjusted by preparing an insertion part consisting of gauge insertion holes with multiple hole diameters. The measurement can be performed by appropriately mounting an appropriately corresponding insertion portion.

Further, by using the pin gauge made of a magnetic material, the pin gauge can be held in the main body simply by inserting the pin gauge from the gauge insertion hole and bringing it into contact with the gauge holding portion.

Furthermore, when defining the insertion force of the pin gauge in which the protruding portion protrudes to the outside and comes into contact with the finger, it can be easily adjusted by only replacing with a compression coil spring having a different spring constant.

It is isometric view explanatory drawing which shows the use condition of the pin gauge adapter which concerns on this embodiment. It is a disassembled perspective view of the pin gauge adapter which concerns on this embodiment. (A), (b) is sectional drawing of the pin gauge adapter which concerns on this embodiment. (A) is sectional drawing which shows the state which a protrusion part does not protrude from a gauge insertion hole at the time of measurement, (b) is sectional drawing which shows the state which protrudes. (A) is sectional drawing of the pin gauge adapter which concerns on a modification, (b) is a front view. It is isometric view explanatory drawing which shows the use condition of the pin gauge adapter which concerns on a modification. (A) is sectional drawing of the pin gauge adapter which concerns on a modification, (b) is a front view. It is sectional drawing of the pin gauge adapter which concerns on a modification. It is a perspective view of the pin gauge adapter which concerns on a modification. (A) is a front view of the pin gauge adapter which concerns on a modification, (b) is the sectional view on the AA line of (a). It is the BB sectional view taken on the line of FIG.

A gist of a pin gauge adapter according to an embodiment of the present invention is a pin gauge adapter including a main body having an outer shape that can be manually held, a gauge holding portion, a moving portion, and a biasing portion that are internally provided in the main body. The main body part has a gauge insertion hole that allows the pin gauge to be inserted and removed freely, and a reference guide hole is bored on the outer surface, and the gauge holding part holds the pin gauge and extends in the axial direction of the pin gauge. The moving part is formed so as to be movable back and forth, and the moving part is formed to be movable back and forth in the axial direction of the pin gauge in conjunction with the forward and backward movement of the gauge holding part, and projects to the outside from the reference guide hole when moved to the rear end side of the main body by a predetermined length. The biasing portion is characterized in that the biasing portion is configured to apply a biasing force against the movement of the moving portion to the rear end side of the main body portion when the moving portion advances and retreats. That is, the present invention is intended to provide a pin gauge adapter that can be manufactured at a low cost with a simple configuration, does not have to worry about malfunctions such as breakdowns, and that allows a measurer to easily and surely perceive a pass/fail judgment. ..

An embodiment of the pin gauge adapter 1 according to the present invention will be described below with reference to the drawings. Further, in the present description, the same reference symbols are given to the left and right identical or symmetrical structures and parts in principle, only one of the left and right is described, and the description of the other is appropriately omitted.

Further, the upper and lower sides of the pin gauge adapter 1 will be described with the side on which the inserted pin gauge P is located being the lower side and the leading side of the pin gauge adapter 1, and the opposite side being the upper side and the rear end side.

As shown in FIGS. 1 to 3A and 3B, a pin gauge adapter 1 according to an embodiment of the present invention has a main body 2 having an outer shape that can be held by a human hand H, and is internally provided in the main body 2. A pin gauge adapter 1 including a gauge holding portion 31, a moving portion 33, and a biasing portion 41. The main body portion 2 has a gauge insertion hole 5 into which a pin gauge P can be inserted and removed, and A reference guide hole 26 is formed on the outer surface, a gauge holding portion 31 holds the pin gauge P and is formed to be movable back and forth in the axial direction of the pin gauge P, and a moving portion 33 is interlocked with the movement of the gauge holding portion 31. The pin gauge P has a protruding portion 37 formed so as to be able to move back and forth in the axial direction, and to protrude to the outside from the reference guide hole 26 when moved to a rear end side of the main body portion 2 by a predetermined length. The moving portion 33 is configured to apply a biasing force against the movement of the moving portion 33 to the rear end side when the moving portion 33 moves back and forth.

Further, the reference guide hole 26 is formed on the rear end surface of the main body 2, and the main body 2 has a hollow main body base 3 penetrating from the gauge insertion hole 5 at the front end to the rear end and the rear end of the main body base 3. The end portion and the sealing portion 24 that is detachably formed are configured.

In the pin gauge adapter 1 configured as described above, the pin gauge P is attached to the main body portion 2, and, for example, as shown in FIG. 1, the index finger f2 is sealed while the main body base portion 3 is sandwiched between the thumb f1 and the middle finger f3. It is used by inserting the pin gauge P from above into the hole y to be measured, which is made by abutting against and gripping the workpiece W, which is provided in the workpiece W below.

Then, when the hole y to be measured is equal to or larger than the diameter of the pin gauge P, only an expected load is applied in the axial direction of the pin gauge P, and the pin gauge P moves inside the main body 2 as shown in FIG. The upward movement of the portion 33 is limited, the protruding portion 37 does not protrude from the reference guide hole 26 formed in the sealing portion 24, and the inserted pin gauge P is equal to or smaller than the hole y to be measured. Can be determined.

However, when the hole y to be measured is smaller than the diameter of the pin gauge P, the protruding portion 37 formed on the moving portion 33 extends from the reference guide hole 26 formed on the sealing portion 24 as shown in FIG. 4B. Since the protrusion 37 projects upward and the protrusion 37 comes into contact with the index finger f2 of the measurer, it can be perceptually determined that the inserted pin gauge P is larger than the hole y to be measured.

Hereinafter, the configuration of each part of the pin gauge adapter 1 according to the present embodiment will be specifically described in detail mainly with reference to FIGS. 2 and 3.

The main body base portion 3 which constitutes the main body portion 2 is formed in a hollow cylindrical shape that vertically penetrates from the gauge insertion hole 5 at the front end to the rear end and has a truncated cone shape at the front end side. A female screw 10 that is screwed into the male screw 28 of the sealing portion 24 is threaded on the peripheral wall.

Further, a resin washer 43, a biasing portion 41, a moving portion 33, and a gauge holding portion 31, which will be described later, are arranged on the inner peripheral wall from the female screw 10 to the tip, and the inner diameter is different so that the pin gauge P can be inserted. Two groove portions 8, 11, 12 are formed.

Specifically, a washer groove 11 on which the edge portion of the resin washer 43 inserted from the rear end side of the main body base 3 abuts is placed directly below the female screw 10, and below the washer groove 11 is the same. The sliding groove 12 on which the edge of the gauge holding portion 31 inserted from the rear end side abuts is formed with an inner diameter slightly smaller than the washer groove 11, and is attached directly above the inserted gauge holding portion 31. The moving portion 33 in which the biasing portion 41 is loosely fitted is placed in contact.

Immediately below the sliding groove 12, a gauge insertion groove 8 having an inner diameter smaller than that of the sliding groove 12 is formed. The gauge insertion groove 8 has a gauge insertion hole 5 as an opening, and the gauge insertion hole 5 itself is formed. The base 3 is formed in a mortar shape that extends outward from the gauge insertion groove 8 on the front end side.

Thus, the female screw 10, the washer groove 11, the sliding groove 12, and the gauge insertion groove 8 communicate with each other and penetrate the main body base 3.

Further, the sealing portion 24 is a disk-shaped body having a diameter substantially equal to the outer diameter of the main body base portion 3, a reference guide hole 26 is formed in the center portion, and the edge portion is chamfered. An engaging portion 27 formed in a cylindrical shape having a diameter smaller than that of the one sensing portion 25 and concentric with it is provided so as to project from the lower bottom surface of the first sensing portion 25, and a male screw 28 is threaded on the outer peripheral surface of the engaging portion 27. ..

That is, the sealing portion 24 is formed so that the reference guide hole 26 and the inner space of the engaging portion 27 communicate with each other and penetrate vertically, and the male screw 28 is screwed with the above-mentioned female screw 10 of the main body base 3. To form an integral body portion 2, and the lower end surface of the engagement portion 27 abuts the edge portion of the resin washer 43 disposed in the washer groove 11 to substantially fix the resin washer 43 in the body portion 2.

The resin washer 43 is made of a synthetic resin material and formed in a donut shape with a predetermined thickness. The inner diameter of the sliding hole 44 formed in the central portion is larger than the outer diameter of the shaft portion 36 that constitutes the upper half of the moving portion 33. It is formed to be slightly larger and smaller than the outer diameter of the urging portion 41 formed of a compression coil spring loosely fitted in the moving portion 33 so that the upper half of the moving portion 33 can slide up and down through the sliding hole 44. Has formed.

It should be noted that by preparing a plurality of compression coil springs having different spring constants as the biasing portion 41, the insertion force of the pin gauge P can be easily specified by replacement.

The moving portion 33 is made of a synthetic resin material, and has a disc-shaped contact portion 34 having a predetermined thickness and a diameter slightly smaller than the inner diameter of the sliding groove 12 formed inside the main body base portion 3, and the contact portion 34. Shaft portion 36 formed in a cylindrical shape having a smaller diameter than the inner diameter of the sliding hole 44 formed in the resin washer 43 and concentric with the contact portion 34, and a smaller diameter than the diameter of the shaft portion 36 and sealing. The diameter of the reference guide hole 26 formed in the portion 24 is slightly smaller than the inner diameter of the reference guide hole 26, and the protrusion portion 37 formed in a cylindrical shape concentric with the shaft portion 36 is formed in a substantially inverted T shape in cross section.

The moving portion 33 is inserted from the rear end side of the main body base portion 3 while the biasing portion 41 is loosely fitted to the peripheral surface of the shaft portion 36 in a state of an inverted T shape with the protruding portion 37 facing upward, and then slides. The urging portion 41 is sandwiched between the lower bottom surface of the resin washer 43 and the inner side surface of the abutting portion 34 by the resin washer 43 inserted from above while inserting the shaft portion 36 into the hole 44, so that the moving portion 33 is moved. Are substantially fixed in the sliding groove 12.

The protrusion 37, especially the peripheral side surface thereof may be colored so that the appearance of the protrusion 37 from the reference guide hole 26 can be easily visually recognized.

The gauge holding portion 31 is made of a neodymium magnet and is formed in a disk shape with a predetermined thickness having a diameter slightly smaller than the inner diameter of the sliding groove 12 formed inside the main body base 3, and the rear end side of the main body base 3 Is inserted into the sliding groove 12.

Therefore, when assembling the above-described components, first, the gauge holding portion 31 is inserted into the sliding groove 12, and then the biasing portion 41 is loosely fitted above the gauge holding portion 31 in the sliding groove 12. The moving portion 33 is inserted, and then the resin washer 43 is inserted into the washer groove 11 while inserting the shaft portion 36 into the sliding hole 44 of the resin washer 43. The pin gauge adapter 1 according to the embodiment is completed.

The pin gauge P is inserted into the gauge insertion groove 8 from the gauge insertion hole 5, and the end portion of the pin gauge P is substantially connected to the gauge holding portion 31 by magnetic force.

In the pin gauge adapter 1 according to this embodiment, the range of the pin gauges P having different diameters that can be inserted into the gauge insertion groove 8 is widened by making the inner diameter of the gauge insertion groove 8 slightly smaller than the diameter of the gauge holding portion 31. be able to.

That is, as shown in FIG. 3(a), from the pin gauge P1 adapted to the inner diameter of the gauge insertion groove 8 to the pin gauge P2 significantly smaller than the inner diameter of the gauge insertion groove 8 as shown in FIG. 3(b). It becomes possible to cope with one pin gauge adapter 1.

By forming in this way, as shown in FIG. 4A, the index finger f2 is brought into contact with the upper surface of the first sensing unit 25 of the sealing unit 24 while being sandwiched between the thumb f1 and the middle finger f3, and the main body unit is held. When the measurement is performed by gripping the peripheral side surface of 2, when the hole y to be measured is equal to or larger than the diameter of the pin gauge P, the projecting portion 37 does not project from the reference guide hole 26 toward the index finger f2, and the measurement is performed. When the target hole y is smaller than the diameter of the pin gauge P, as shown in FIG. 4B, the protrusion 37 protrudes from the reference guide hole 26 toward the index finger f2, and the protrusion 37 comes into contact with the index finger f2. It can be perceptually determined that the inserted pin gauge P is larger than the hole y to be measured.

When the hole y to be measured is not a through hole, the air in the hole y is difficult to escape when the pin gauge P is inserted, so that the insertion force is prevented from increasing unexpectedly. There are also cases where a continuous recessed groove for air bleeding is formed along the top and bottom or a pin gauge P provided with an air bleeding hole penetrating in the axial direction of the pin gauge P is used. The constituting neodymium magnet may be provided with a small-diameter hole penetrating vertically, or a concave groove may be formed on the surface contacting the pin gauge P.

Next, a plurality of modified examples of the pin gauge adapter 1 according to the present embodiment described above will be described in detail, but the same reference numerals will be used for the same constituent members and the description thereof will be appropriately omitted.

In the pin gauge adapter 1a shown in FIGS. 5A and 5B, the washer groove 11 is formed integrally with the sliding groove 12, and the diameter of the resin washer 43 is formed to be slightly smaller than the inner diameter of the sliding groove 12. As a result, the resin washer 43 is not substantially fixed, and is stably arranged in the sliding groove 12 immediately below the sealing portion 24 by the urging force of the urging portion 41.

By forming in this way, the structure is further simplified, and the main body base 3 can be manufactured at low cost.

Further, the main body base portion 3 is composed of an insertion portion 4 forming a tip side including the gauge insertion hole 5 and a base portion 9 forming a gap between the insertion portion 4 and the sealing portion 24. The insertion portion 4 is attached to and detached from the base portion 9. It is formed freely.

Specifically, the base portion 9 is formed into a substantially cylindrical shape in appearance, and the gauge insertion groove 8 communicating with the sliding groove 12 is inserted in the middle portion of the gauge insertion groove 8, that is, immediately below the gauge holding portion 31 to insert the gauge portion. The groove 8 is formed to have a diameter larger than that of the groove 8, and the inner peripheral wall of the groove 8 is provided with an insertion female screw 13 which is screwed into the insertion male screw 7 of the insertion portion 4.

The insertion portion 4 has an upper portion formed in a cylindrical shape having substantially the same diameter as the base portion 9 and a lower portion formed in a truncated cone shape, and an upper end upper surface formed in a concentric cylindrical shape having a diameter smaller than that of the base portion 9. The portion 6 is provided so as to project, and an insertion male screw 7 is threaded on the outer peripheral surface of the portion 6 so that the insertion portion 4 and the base portion 9 are integrally screwed together to form a shell shape.

The insertion portion 4 forms a gauge insertion groove 8 that penetrates vertically from the gauge insertion hole 5 including the inner space of the tip engaging portion 6 so that the gauge insertion groove 8 suitable for the diameter of the pin gauge P to be used is measured. If it is desired to carry out the above, by preparing a plurality of insertion portions 4 in which the gauge insertion grooves 8 having different inner diameters are formed, it becomes possible to appropriately and easily replace them.

It should be noted that the insertion portion 4 is not attached to and detached from the base portion 9 by screwing the insertion male screw 7 and the insertion female screw 13 but cuts the outer peripheral surface of the tip end side of the base portion 9 like the pin gauge adapter 1c shown in FIG. Then, the doughnut-shaped magnet 14 may be externally fitted to the portion, and the insertion portion 4 may be formed of a magnetic material so as to be detachable by magnetic force.

In this case, the surface of the magnet 14 is formed to be lower than the front end surface of the base portion 9 so that the front end surface of the base portion 9 is formed in a convex shape, and the convex portion corresponds to the upper surface of the insertion portion 4. A peripheral edge of the gauge insertion groove 8 on the upper surface is formed in a concave shape so as to be substantially fitted.

As described above, by using the magnet 14 for attaching and detaching the insertion portion 4 and the base portion 9, it is possible to extremely easily replace the insertion portion 4 with the gauge insertion groove 8 having a different inner diameter. Become.

Further, in the pin gauge adapter 1a shown in FIGS. 5A and 5B, the peripheral surface reference guide hole 29 serving as the reference guide hole 26 is formed on the peripheral side surface of the base portion 9 and the contact portion 34 of the moving portion 33 is provided. A peripheral surface projecting portion 38 is formed so as to project in a direction orthogonal to the shaft portion 36, and further a gripping concave portion 15 having a curved concave shape on the rear end side of the peripheral surface reference guide hole 29 is formed.

With this configuration, the index finger f2 is held in contact with the grip recess 15 and is sandwiched with the thumb f1 to grip the peripheral side surface of the main body 2 to perform measurement, so that the hole to be measured has a diameter of the pin gauge P. If the hole is not larger than the diameter of the pin gauge P, the peripheral surface projecting portion 38 does not move in the forefinger f2 direction from the peripheral surface reference guide hole 29, as shown in FIG. Since the peripheral surface protruding portion 38 moves from the peripheral surface reference guide hole 29 in the forefinger f2 direction and the peripheral surface protruding portion 38 contacts the forefinger f2, it is perceptual that the inserted pin gauge P is larger than the hole to be measured. Can be judged.

Specifically, the peripheral surface reference guide hole 29 is formed by drilling the substantially central portion of the peripheral side surface of the base portion 9 so as to have a substantially elliptical shape in the vertical direction, and the grip recess 15 is formed in the upper half of the peripheral surface reference guide hole 29. The peripheral side surface is formed by cutting the peripheral side surface of the base 9 so as to have a substantially circular shape in appearance and a curved concave shape in cross section so as to include the portion.

Further, the peripheral surface protruding portion 38 has a rear end surface formed with a tool insertion hole 39 into which a hexagon wrench or the like engages, and a distal end portion formed with a substantially cylindrical shape having a protruding male screw 40. A peripheral surface protruding portion 38 orthogonal to the shaft portion 36 is formed by screwing the protruding male screw 40 side with a hexagonal wrench or the like into the orthogonal female screw hole 35 formed in a part thereof.

Further, the rear end side of the peripheral surface protruding portion 38 is always exposed to the outside from the peripheral surface reference guide hole 29, and in the initial state, the rear end is below the peripheral surface reference guide hole 29 and the rear end is substantially the peripheral side surface of the base portion 9. It is positioned so as to be flush with the peripheral projection 38 when the load is applied and gradually moves upward, and when the load exceeds a predetermined amount, it moves to the area of the grip recess 15.

Therefore, when the peripheral surface protruding portion 38 is located in the region of the grip concave portion 15, the peripheral surface protruding portion 38 moves so as to protrude on a smooth curved surface, so that the measurer can easily perceive the peripheral surface protruding portion 38 with a fingertip. You can

It should be noted that the grip concave portion 15 is not formed in a part of the base portion 9 as described above, but as shown in FIGS. The pin gauge adapter 1b can be formed over the circumference, and the pin gauge adapter 1b can be more easily gripped by forming in this way.

Further, in the pin gauge adapter 1a shown in FIGS. 5 and 7, a plurality of peripheral surface reference guide holes 29 are formed on the peripheral side surface of the base portion 9 and a plurality of peripheral surface protruding portions 38 are formed so that the pin gauge adapter 1a can be gripped. And the workability is improved, and the contact of the circumferential surface protruding portion 38 with the finger is further ensured.

Further, the pin gauge adapter 1d shown in FIG. 9 is configured such that the inner diameter of the gauge insertion groove 8 can be freely changed by advancing and retracting the two adjusting bolts 22.

Specifically, as shown in FIGS. 10 and 11, after the base portion 9 is extended to a position corresponding to the insertion portion 4 to form a cylindrical shape, the gauge insertion groove 8 communicating with the sliding groove 12 is formed. A sandwiching part 16 formed by cutting so as to have a substantially semicircular shape in a bottom view just below the gauge holding part 31, and a sandwiching piece 19 independently formed in a semicircular shape in a bottom view with a predetermined thickness. It consists of and.

The sandwiching receiving portion 16 is formed directly below the gauge holding portion 31 to form a curved concave first side wall 17 that forms a part of the gauge insertion groove 8 and extends vertically, and is formed so as to face the left and right sides of the first side wall 17. It has two penetrating female screw holes 18.

Further, the sandwiching piece 19 forms a curved concave second side wall 20 which forms a part of the gauge insertion groove 8 and extends vertically, and two through bolt insertion holes formed so as to oppose to the left and right sides of the second side wall 20. 21.

Then, the two adjusting bolts 22, 22 are provided from the curved peripheral surface side of the holding piece 19 via the through bolt insertion hole 21 so that the second side wall 20 of the holding piece 19 faces the first side wall 17 of the holding portion 16. Is inserted and screwed into the penetrating female screw hole 18 of the holding portion 16, the holding piece 19 is formed integrally with the base portion 9, and the adjustment bolt 22 moves forward and backward to form the first side wall 17 and the second side wall 20. It is possible to change the inner diameter of the gauge insertion groove 8.

As described above, the pin gauge adapter 1 according to this embodiment can be configured with various modifications 1 (a, b, c, d).

The pin gauge adapter 1 as described above includes a main body 2 having an outer shape that can be gripped by the human hand H, a gauge holding portion 31, a moving portion 33, and a biasing portion 41 that are provided inside the main body 2. In the adapter 1, the main body portion 2 has a gauge insertion hole 5 that allows the pin gauge P to be inserted and removed at the tip, and has a reference guide hole 26 formed on the outer surface thereof. The movable portion 33 is formed so as to be capable of moving forward and backward in the axial direction of the pin gauge P, and the moving portion 33 is formed so as to be movable forward and backward in the axial direction of the pin gauge P in conjunction with the forward and backward movement of the gauge holding portion 31. It has a protruding portion 37 formed so as to protrude from the reference guide hole 26 to the outside when moved by a predetermined length, and the urging portion 41 moves to the rear end side of the main body portion 2 in the moving portion 33 when the moving portion 33 moves back and forth. Since it is configured to apply a biasing force that resists against, the protrusion 37 is provided on the finger of the measurer who holds the main body portion 2 without worrying about malfunctions such as a simple structure, which can be manufactured at low cost. By touching it, it can be perceived that the load is applied to the pin gauge P with an insertion force that is equal to or more than the specified value, so that the pass/fail judgment can be easily and reliably performed without depending on the skill level of the measurer.

Further, since the reference guide hole 26 is formed on the rear end surface of the main body 2, it is possible to apply a load to the pin gauge P with an insertion force more than the specified value simply by gripping the finger while contacting the rear end surface and performing measurement. For example, since the protrusion 37 comes into contact with the fingers as much as possible, it is possible to easily and surely determine whether the result is acceptable or not.

Further, since the reference guide hole 26 is formed on the peripheral side surface of the main body 2, it is possible to apply a load to the pin gauge P with an insertion force more than the specified value simply by gripping the finger while making contact with the peripheral side surface and performing measurement. For example, since the protrusion 37 comes into contact with the fingers as much as possible, it is possible to easily and surely determine whether the result is acceptable or not.

Further, the main body 2 includes a hollow main body base 3 penetrating from the gauge insertion hole 5 at the front end to the rear end, and a sealing portion 24 detachably formed on the rear end of the main body base 3. The constituent members such as the gauge holding portion 31, the moving portion 33, and the urging portion 41 can be inserted and assembled from the rear end of the main body base portion 3, and these members can be further assembled by the sealing portion 24 inside the main body portion 2. It can be stably installed inside.

In addition, it is possible to easily disassemble and respond when a defect occurs in a component member or during adjustment or maintenance.

Further, the main body base portion 3 is composed of an insertion portion 4 forming a tip side including the gauge insertion hole 5 and a base portion 9 forming a gap between the insertion portion 4 and the sealing portion 24. The insertion portion 4 is attached to and detached from the base portion 9. Since the gauge holding portion 31 is formed of a magnet and the biasing portion 41 is formed of a compression coil spring, it is used by preparing the insertion portion 4 including the gauge insertion holes 5 having a plurality of hole diameters. The measurement can be performed by appropriately mounting the insertion portion 4 that appropriately corresponds to the diameter of the pin gauge P.

Further, by using the pin gauge P made of a magnetic material, the pin gauge P can be held in the main body portion 2 only by inserting the pin gauge P from the gauge insertion hole 5 and bringing it into contact with the gauge holding portion 31.

Furthermore, when defining the insertion force of the pin gauge P which the protrusion 37 protrudes to the outside and touches the finger, it can be easily adjusted by replacing with a compression coil spring having a different spring constant.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the specific embodiment, and various modifications and variations are possible within the scope of the gist of the present invention described in the claims. It can be changed.

H Hand P Pin gauge 1 Pin gauge adapter 2 Main body 3 Main body base 4 Insertion part 5 Gauge insertion hole 9 Base part 24 Sealing part 26 Reference guide hole 31 Gauge holding part 33 Moving part 37 Projection part 41 Energizing part

Claims (5)

A pin gauge adapter consisting of a main body having an outer shape that can be manually held, a gauge holding section, a moving section, and a biasing section provided inside the main body,
The main body part has a gauge insertion hole that allows a pin gauge to be inserted and removed freely, and a reference guide hole is formed on the outer surface.
The gauge holding portion holds the pin gauge and is formed so as to be movable back and forth in the axial direction of the pin gauge,
The moving part is formed so as to move forward and backward in the axial direction of the pin gauge in conjunction with the forward and backward movement of the gauge holding part, and to project outward from the reference guide hole when moved to a rear end side of the main body part by a predetermined length. Has a protruding portion,
The pin gauge adapter is configured such that the biasing portion applies a biasing force against the movement of the moving portion toward the rear end side of the moving portion when the moving portion advances and retracts. The pin gauge adapter according to claim 1, wherein the reference guide hole is formed on a rear end surface of the main body. The pin gauge adapter according to claim 1 or 2, wherein the reference guide hole is formed on a peripheral side surface of the main body. The main body portion is composed of a hollow main body base portion penetrating from the gauge insertion hole at the front end to a rear end, and a sealing portion detachably formed on the rear end of the main body base portion. The pin gauge adapter according to any one of claims 1 to 3. The main body base portion includes an insertion portion that forms a tip side including the gauge insertion hole, and a base portion that forms a gap between the insertion portion and the sealing portion, and the insertion portion is detachably formed from the base portion. The pin gauge adapter according to claim 4, wherein the gauge holding portion is formed of a magnet, and the biasing portion is formed of a compression coil spring.

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