JP4517243B2 - Rotating detachable fastener - Google Patents

Description

  The present invention relates to a fastener capable of easily and quickly tightening or removing a fastener from a rod-like body such as a bolt, and in particular, a male occlusal portion composed of a male screw, a ring-shaped groove, or a ring-shaped convex portion. The present invention relates to a rotary detachable fastener capable of switching between occlusion and occlusion release with respect to a rod-shaped body formed with a single touch.

  Hitherto, fasteners have been proposed for quickly performing a fastening operation and a removal operation of a fastener with respect to a bolt. For example, in the simple fastening device described in Japanese Patent No. 3182678, a base in which a mortar-shaped hole having a slope whose diameter gradually decreases in the bolt insertion direction and a half-doughnut-shaped portion facing the mortar-shaped hole is formed. A screw piece that is guided by the mortar-shaped hole and expands and contracts in the diametrical direction as it moves in the axial direction, a spring that urges the screw piece in the expanding direction, and is movably provided with respect to the base to maintain the expanded state of the screw piece And a cap that moves the screw piece in the contraction direction by movement in the base direction (Patent Document 1).

  In the normal state, in the normal state, the screw piece is biased upward by a spring, and the mortar shape portion of the screw piece is fitted into the semi-conical shape portion of the cap and is held in an expanded state. For this reason, the internal thread part of a screw piece is set to the state which does not mesh with a volt | bolt. On the other hand, when fastening to the bolt, the screw piece slides down along the slope of the cap by pushing the cap downward against the biasing force of the spring. Thereby, the screw piece is set in a state of moving in the contracting direction and meshing with the bolt.

Japanese Patent No. 3182678

  However, in the invention described in Patent Document 1, as described in the specification, the screw piece and the bolt are fastened only by the biting force of the screw piece, and there is a member for holding the screw piece. do not do. More specifically, by pushing the cap downward and rotating, the cap is free in the vertical direction after the screw piece and the bolt are engaged, and does not support the screw piece. Although the semi-conical portion of the screw piece is in contact with the slope of the base guide, it is not supported. For this reason, resistance against the upward force along the axis and the force perpendicular to the axis is weak on the screw piece, which is not preferable for fastening a member that requires a safe fastening force or a large member.

  In addition, the cap is free after screwing, and there is no force that opposes the biasing force of the spring other than the screwing force, so when the meshing state of the screw piece begins to loosen, the screw piece moves in the expanding direction by the spring biasing force. There is also a problem that the fastening state is easily released.

  Further, when using the simple fastening device of Patent Document 1, the hexagonal base must be tightened with a tool or the like in the rotation direction while pressing the cap against the urging force of the spring when tightening to the bolt. Therefore, it cannot be said that work efficiency is good.

  The present invention has been made in order to solve such problems, and is a male occlusal portion composed of a male screw, a ring-shaped groove, or a ring-shaped convex portion only by rotating the rotary cover by a predetermined angle. An object of the present invention is to provide a rotary attachment / detachment fastener that can easily switch between occlusion and occlusion release with respect to a rod-shaped body formed with, and can maintain a strong fastening state.

  The rotary attachment / detachment fastener according to the present invention is characterized in that an insertion hole is formed through which a rod-shaped body having a male occlusion portion formed of a male screw, a ring-shaped groove, or a ring-shaped convex portion is inserted. A guide base including a flange portion, and a guide portion provided with a guide groove standing from the gripping flange portion and extending to the insertion hole along a radial direction perpendicular to the axis of the insertion hole; Sliding surface that slides with the groove, female occlusal surface composed of a female screw, an arc-shaped convex portion, or an arc-shaped groove that meshes with the male occlusal portion of the rod-shaped body, and the back side of the female occlusal surface A fastening piece provided with a driven surface provided on the urging member, a urging member for urging the fastening piece in a direction to retract the fastening piece from the insertion hole, and a rotatable arrangement outside the guide base, Is the female occlusal surface of the fastening piece within the insertion hole? A retracting portion that retracts in the direction perpendicular to the axis and allows the rod-shaped body to be inserted, and a driven surface of the fastening piece against the biasing member to push the female occlusal surface into the insertion hole It has the rotation cover provided in the circumferential direction with the occlusal holding part which advances in the direction perpendicular to the axis and holds the occlusal state that can be engaged with the male occlusal part.

  In the present invention, the urging member is constituted by a leaf spring. The center portion of the leaf spring is fixed to the back surface of the fastening piece, and both end portions thereof are bent or bent so as to generate a predetermined urging force. It is preferable that the guide base is slidably disposed in a leaf spring guide groove formed on the outer wall surface of the guide portion of the guide base.

  Furthermore, in the present invention, it is preferable that a gentle inclined surface is formed in the occlusion holding portion of the rotating cover at a sliding contact start position with the driven surface of the fastening piece.

  In the present invention, it is preferable that the retracting portion of the rotating cover is formed as a retracting opening that is opened to a size that allows the fastening piece to be retracted.

  According to the present invention, by simply rotating the rotary cover by a predetermined angle, it is possible to easily bite and release the occlusion with respect to the rod-like body in which the male occlusal portion composed of a male screw, a ring-shaped groove, or a ring-shaped convex portion is formed. It is possible to switch, and a strong fastening state can be maintained.

  Hereinafter, a first embodiment of a rotary attachment / detachment fastener according to the present invention will be described with reference to the drawings. FIGS. 1 to 6 are a perspective view, a front view, a rear view, a plan view, a bottom view, and a left side view, respectively, showing the rotary attachment / detachment fastener 1A according to the first embodiment. FIG. 7 is a sectional view taken along line 7A-7A in FIG. 2, and a sectional view taken along line 8A-8A and 9A-9A in FIG.

  The rotary attachment / detachment fastener 1A of the first embodiment mainly includes a guide base 2 having an insertion hole 21 through which the rod-shaped body B1 is inserted, and a pair of fastening pieces 3, 3 provided slidably on the guide base 2. The biasing member 4 biases the fastening pieces 3 and 3 in the direction of retracting from the insertion hole 21, and the rotary cover 5 that advances and retracts the fastening pieces 3 and 3 into and from the insertion hole 21. In addition, 1 A of rotary attachment / detachment fasteners of this 1st Embodiment enable occlusion and occlusion cancellation | release with respect to rod-shaped body B1 in which the male occlusion part b1 comprised as a male screw was formed like a volt | bolt. It is configured.

  Hereinafter, each component will be described in more detail. As shown in FIGS. 1 to 9, the guide base 2 has a gripping flange portion 22 in which an insertion hole 21 is formed, and a guide portion 23 erected from the gripping flange portion 22. The gripping flange portion 22 is formed in a hexagonal shape so that its outer shape is easily gripped and tightened by a tool such as a spanner, and an insertion hole 21 having a slightly larger diameter than the rod-shaped body B1 is formed at the center thereof. Has been. Of course, the shape is not limited to a hexagon and may be formed according to the tool. Further, an annular groove 22 a for rotatably fitting the rotary cover 5 along the outer periphery of the guide portion 23 is formed on the upper surface of the gripping flange portion 22.

  Further, the guide portion 23 of the guide base 2 is formed with a guide groove 24 along a radial direction perpendicular to the axis of the insertion hole 21 (hereinafter referred to as “axial direction perpendicular”). The guide groove 24 is provided so as to communicate with the insertion hole 21 and guides the fastening pieces 3 and 3 to the insertion hole 21. In the first embodiment, as shown in FIG. 9, two concave guide grooves 24 are formed at opposing positions around the insertion hole 21, and the pair of fastening pieces 3, 3 are arranged in the direction perpendicular to the axis. It guides so that it may advance and retreat to the insertion hole 21 along. Further, the guide groove 24 may be formed only in the guide portion 23 on the gripping flange portion 22, but in the first embodiment, it is formed by cutting the upper surface of the gripping flange portion 22. This is a contrivance to keep the height of the guide portion 23 low while forming the gripping flange portion 22 to be gripped with a tool thick.

  Moreover, the outer wall surface of the guide part 23 is formed in the circular arc shape so that the inner peripheral surface of the rotation cover 5 can be slid, and the rotation cover 5 can be stably guided in the circumferential direction. However, this is not an essential shape, and the rotation cover 5 can be rotated along the annular groove 22a.

  Further, a leaf spring guide groove 25 having a concave cross section along the arc direction is formed in a strip shape on the outer wall surface of the guide portion 23, and both end portions of the leaf spring 4, which is an urging member 4 described later, are arranged and guided. It has come to be able to do.

  Further, a stopper plate portion 26 that engages with the rotary cover 5 is extended on the upper edge of the inner wall surface of the guide portion 23. The stopper plate 26 is configured such that the upper edge of the stopper plate 26 is bent outward so as to be brought into contact with the upper surface of the rotary cover 5 so that the rotary cover 5 does not come out upward.

  Next, the fastening piece 3 slides along the direction perpendicular to the axis on the guide base 2 and is disposed so as to be able to advance and retreat with respect to the insertion hole 21. As shown in FIG. 9, the fastening piece 3 is formed to be slidable in the guide groove 24, and both side surfaces thereof are configured as sliding surfaces 31 that slide on both side surfaces of the guide groove 24. Has been. Further, on the front surface facing the insertion hole 21, a female occlusal surface 32 constituted by a female screw engaged with the male occlusal portion b <b> 1 constituted by a male screw is formed. On the back surface of 32, a driven surface 33 that is pushed when the fastening piece 3 is advanced into the insertion hole 21 is formed. The driven surface 33 is formed in a substantially circular arc shape and is smoothly pushed by the curved inner wall of the rotary cover 5.

  Next, the urging member 4 is composed of a leaf spring 4, and its central portion is fixed to the back surface of the fastening piece 3 as shown in FIGS. 1 and 9. The both end portions are bent toward the sliding surface 31 and are formed to slide on the outer wall surface of each guide portion 23. In the first embodiment, both end portions of the leaf spring 4 are disposed in the leaf spring guide groove 25 formed on the outer wall surface of the guide portion 23, and the leaf spring 4 bends along the strip-like leaf spring guide groove 25. While being guided.

  The bending angle of the leaf spring 4 is curved or bent so as to obtain a predetermined urging force. Specifically, when the fastening piece 3 is pushed in the direction of the insertion hole 21, the leaf spring 4 expands along the leaf spring guide groove 25 and generates a restoring force. And the fastening piece 3 is urged | biased by the direction which retracts from the insertion hole 21 with this restoring force. For this reason, in this 1st Embodiment, the bending angle of the leaf | plate spring 4 is set so that the energizing force of the grade which retracts | saves the female side occlusal surface 32 of the fastening piece 3 from the insertion hole 21 is obtained. In the first embodiment, a groove for fitting the leaf spring 4 is formed on the back surface of the fastening piece 3, and the leaf spring 4 is fitted in this groove, as shown in FIGS. Thus, the rear edge of the fastening piece 3 is extended and fixed. The leaf spring 4 may be fixed by an adhesive or welding.

  Next, the rotary cover 5 is formed in a cylindrical crown shape having a size that covers the guide portion 23 and having an opening at the lower bottom, and a circular opening portion 51 through which the rod-shaped body B1 is inserted is formed on the upper surface. Further, on the side wall of the rotary cover 5, there are a retraction opening 52 opened to a size that allows the fastening piece 3 to be retracted, and an occlusal holding portion 53 for pushing and holding the fastening piece 3 in the circumferential direction. It is formed at intervals of about 90 degrees.

  The retraction openings 52 of the rotary cover 5 serve to retreat the fastening pieces 3 and are provided at two locations corresponding to the fastening pieces 3 as shown in FIGS. 6 and 9. In the first embodiment, the retraction opening 52 of the rotary cover 5 is opened for the purpose of reducing the outer diameter of the rotary attaching / detaching fastener 1A. However, the present invention is not limited to this, and will be described later. As described above, a recess for retracting the fastening piece 3 may be formed on the inner wall surface of the rotary cover 5 to constitute a thin-walled retracting portion.

  Further, the occlusal holding portion 53 of the rotary cover 5 is provided between the respective retraction openings 52 in the circumferential direction, and is formed with a thickness that can push the fastening piece 3 by a predetermined amount. The thickness of the occlusal holding portion 53 is formed such that the female occlusal surface 32 is advanced into the insertion hole 21 so as to be able to occlude the male occlusal portion b1 and can slide with the outer peripheral surface of the guide portion 23. Is done. The occlusal holding portion 53 is provided with a gentle inclined surface 54 at a position where sliding contact with the driven surface 33 of the fastening piece 3 is started. It can be pushed with.

  Therefore, when the rotary cover 5 is rotated and the retracting opening 52 is aligned with the fastening piece 3 in the circumferential direction, the fastening piece 3 biased by the leaf spring 4 slides into the retracting opening 52. As a result, the female occlusal surface 32 is retracted from the insertion hole 21 in the direction perpendicular to the axis line, so that the rod-like body B1 can be inserted. On the other hand, when the rotation cover 5 is rotated about 90 degrees from this insertion state, the fastening piece 3 pushed by the occlusal holding portion 53 slides to the insertion hole 21 side against the urging force of the leaf spring 4. As a result, the female occlusal surface 32 is advanced into the insertion hole 21 in the direction perpendicular to the axis line and is switched to an occlusal state in which the female occlusal surface 32 can be engaged with the rod-like body B1 (also referred to as a screwed state in the first embodiment).

  As shown in FIGS. 1, 4, and 8, the rotary cover 5 is rotatably fitted in the annular groove 22 a of the guide base 2. The stopper plate portion 26 of the guide base 2 extends from the circular opening 51 of the rotary cover 5 and is bent outward so that it can come into contact. Thereby, it is prevented that the rotary cover 5 comes off upward. On the other hand, two positioning projections 55, 55 projecting inward are formed on the inner peripheral edge of the circular opening 51. The positions and sizes of the positioning protrusions 55 and 55 are set so as to be inserted when they come into contact with one end side of the stopper plate portions 26 and 26, and the positioning protrusions 55 and 55 are set to the stopper plates. It is set so as to be in an occlusal state when it comes into contact with the other end side of the portions 26, 26.

  In the first embodiment, printing is performed on the upper surface and the outer peripheral surface of the rotation cover 5 to indicate the rotation direction and the rotation amount. Specifically, as shown in FIG. 1 to FIG. 4 and FIG. 6, in the rotation direction for setting the insertion state, an arrow is written together with the letters “In / Out” to set the occlusion state. In the sliding direction, an arrow is written together with the characters “Fix”. In the first embodiment, the character “90 °” is described as the rotation angle for switching between the insertion state and the occlusion state.

  A knurling or the like may be formed on the outer periphery of the rotary cover 5 so as to be easily gripped when rotated, and the outer shape may be a polygonal shape.

  Next, the operation of the rotary detachable fastener 1A according to the first embodiment having the above-described configuration will be described with reference to the drawings.

  First, when the fastening object Y is fastened to the fastening body X by the rotary attachment / detachment fastener 1A of the first embodiment, the fastening body X and the fastening object Y are communicated as shown in FIG. A rod-like body B1 such as a bolt is inserted into the pilot hole H. On the other hand, about the rotary attachment / detachment fastener 1A, the rotary cover 5 is rotated and set to the insertion state. Specifically, the rotation cover 5 is rotated about 90 degrees in accordance with the direction indicated by “In / Out” printing, and the positioning projections 55 and 55 come into contact with one end side of the stopper plate portions 26 and 26. . Thereby, in the circumferential direction, each retraction opening 52, 52 coincides with the driven surface 33 of each fastening piece 3, 3, and each fastening piece 3, 3 urged by the leaf spring 4 extends along the guide groove 24. And slide into the respective retraction openings 52, 52. For this reason, as shown in FIG. 9, each female occlusal surface 32, 32 is retracted from the insertion hole 21 in the direction perpendicular to the axis line, so that the rod-like body B <b> 1 can be inserted.

  Subsequently, the rotary attachment / detachment fastener 1A set in the insertion state is inserted through the rod-like body B1. At this time, since the female occlusal surfaces 32, 32 are retracted from the insertion holes 21, the rotary attachment / detachment fastener 1A is inserted without rotation into the male occlusion portion b1 of the rod-like body B1. The Then, as shown in FIG. 10 (b), after the rotary attaching / detaching fastener 1 </ b> A is inserted all the way to the vicinity of the article to be fastened Y, the rotary cover 5 is rotated and set to the occlusal state.

  Specifically, when the rotary cover 5 is rotated about 90 degrees in the direction indicated by “Fix”, the positioning protrusions 55 and 55 come into contact with the other end sides of the stopper plate portions 26 and 26. Thereby, in the circumferential direction, each occlusal holding part 53, 53 coincides with the driven surface 33 of each fastening piece 3, 3, and each occlusal holding part 53, 53 opposes the urging force of the leaf spring 4. The fastening pieces 3 and 3 are slid along the guide groove 24 to the insertion hole 21 side. At this time, since the pushing of the driven surface 33 of the fastening piece 3 is started by the inclined surface 54 formed in the occlusal holding part 53, the sliding can be quickly performed without being caught by the edge of the fastening piece 3. Accordingly, as shown in FIGS. 11 and 12, each female-side occlusal surface 32, 32 advances into the insertion hole 21 along the guide groove 24 and enters an occlusal state where it can be engaged with the rod-shaped body B <b> 1. Further, the occlusal holding unit 53 can hold the occlusion state because the occlusal holding unit 53 continues to press the driven surface 33 of the fastening piece 3 unless the rotary cover 5 is rotated in the reverse direction.

  Subsequently, as shown in FIG. 10 (c), the gripping flange portion 22 of the rotary attachment / detachment fastener 1A is slightly tightened in the tightening direction with a tool and the female occlusal surfaces 32, 32 are interposed. It can be screwed to the rod-like body B1, and the fastened object Y is firmly fastened to the fastening body X.

  On the other hand, when removing the rotary attachment / detachment fastener 1A of the first embodiment fastened as described above, the rotary cover 5 is simply rotated in a direction to be inserted. Thereby, since each female side occlusal surface 32 and 32 retracts | saves from the inside of the insertion hole 21 with the urging | biasing force of the leaf | plate spring 4, occlusion with rod-shaped body B1 is cancelled | released. Therefore, the rotary attachment / detachment fastener 1A is simply lifted up and removed at a stroke without rotation with respect to the rod-like body B1.

According to the first embodiment as described above,
1. By simply rotating the rotary cover 5 by a predetermined angle, it is possible to quickly switch between occlusion and occlusion release with the rod-like body B1, and it is possible to easily and quickly perform tightening work and removal work.
2. Since the engagement state of the fastening piece 3 is held by the rotating cover 5, the engagement state is difficult to be released and the fastening force can be increased.
3. Since the occlusal state and the occlusal release state can be completely switched by simply rotating the rotary cover 5 by a predetermined angle, the switching operation is simple and the working efficiency can be improved.

  Next, a second embodiment of the rotary attachment / detachment fastener according to the present invention will be described. In addition, the same code | symbol is attached | subjected about the structure equivalent to the structure of 1st Embodiment mentioned above among the structures of this 2nd Embodiment, and the description is abbreviate | omitted.

  The rotary attachment / detachment fastener 1B according to the second embodiment is shown in FIGS. A feature of the second embodiment is that the retracting opening 52 is opened in the first embodiment as a configuration for retracting the fastening piece 3. However, in the second embodiment, the thickness of the side wall of the rotary cover 5 is increased. This is realized by a thin-walled retracting portion 56 that is made thinner. According to such a rotary attaching / detaching fastener 1B, the rotating cover 5 becomes larger than that of the first embodiment, but there is an advantage that there is no possibility that dust or the like enters the rotating cover 6.

  Furthermore, a rotary detachable fastener 1C as shown in FIG. 19 can be proposed as a third embodiment according to the present invention. In each of the above-described embodiments, the two opposing guide grooves 24 are formed and the two fastening pieces 3 to be paired are disposed. In the third embodiment, the three guide grooves 24 are arranged in the circumferential direction. The fastening pieces 3 are arranged in the guide grooves 24 at equal intervals. Then, by rotating the rotary cover 5 in the forward and reverse directions, the fastening piece 3 is advanced and retracted radially in the direction perpendicular to the axis.

  According to the rotary detachable fastener 1C of the third embodiment as described above, in addition to the effects of the embodiment described above, the arc length of each female occlusal surface 32 is shortened while maintaining a predetermined fastening strength. can do. For this reason, it is possible to shorten the slide amount necessary for retracting the end of each female-side occlusal surface 32 from the insertion hole 21, thereby reducing the outer diameter of the rotary detachable fastener 1 </ b> C. . In addition, since the switching interval between the occlusal holding part 53 and the retracting part 56 of the rotary cover 7 can be reduced, the occlusal state and the insertion state can be switched with a small amount of rotation.

  Next, fourth and fifth embodiments of the rotary detachable fastener according to the present invention will be described. Note that, among the configurations of the fourth embodiment and the fifth embodiment, configurations that are the same as or equivalent to the configurations of the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 20, the rotary attachment / detachment fastener 1D of the fourth embodiment is characterized by occlusion and occlusion release with respect to a rod-like body B2 in which a male occlusion portion b2 formed of a ring-shaped groove is formed. It is in the point where it is configured to be possible. Specifically, the female occlusal surface 32D of the fastening piece 3D is formed with an arcuate convex portion 32D1 protruding in an arc shape so as to match the groove of the male occlusal portion b2. Therefore, when the rotary cover 5 is rotated in the forward and reverse directions, the fastening piece 3D advances and retreats in the direction perpendicular to the axis, and the arcuate convex portion 32D1 engages and releases the occlusal portion b2.

  In addition, as shown in FIG. 21, the feature of the rotary attachment / detachment fastener 1E of the fifth embodiment is that it is occlusal with respect to a rod-like body B3 formed with a male occlusal portion b3 composed of a ring-shaped convex portion. In addition, the occlusion can be released. Specifically, the female occlusal surface 32E of the fastening piece 3E is formed with an arcuate groove 32E1 that meshes with the ring-shaped convex shape of the male occlusal portion b3. Therefore, when the rotary cover 5 is rotated in the forward and reverse directions, the fastening piece 3E advances and retreats in the direction perpendicular to the axis, and the arc-shaped groove 32E1 engages with and releases the occlusal portion b3.

  According to the fourth embodiment and the fifth embodiment as described above, unless the rotating cover 5 is rotated to release the engagement state between the fastening pieces 3D and 3E and the rod-like bodies B2 and B3, the rotary detachable fastening The tools 1D and 1E are not detached from the rod-like bodies B2 and B3. Moreover, since it is not screwing by a screw, additional tightening work becomes unnecessary, and fastening work can be simplified and speeded up. At this time, a washer may be sandwiched between the fastening body instead of retightening.

  The rotary attachment / detachment fastener according to the present invention is not limited to the above-described embodiments, and can be changed as appropriate. For example, the number of fastening pieces 3, 3D, 3E need not be limited to two or three, and may be one or four or more. The urging member 4 is also preferably the leaf spring 4, but is not limited to this, and can be changed as long as the urging force capable of retracting the fastening pieces 3, 3D, 3E can be applied.

  In the fourth embodiment and the fifth embodiment described above, the rod-like bodies B2 and B3 in which the male occlusal portions b2 and b3 are composed of one ring-shaped groove or ring-shaped convex portion have been described. However, the rod-like bodies B2 and B3 having two or more ring-shaped grooves or ring-shaped protrusions may be engaged and unoccluded. In this case, arc-shaped convex portions or arc-shaped grooves may be formed on the female-side occlusal surfaces 32D and 32E of the fastening pieces 3D and 3E in accordance with the number of ring-shaped grooves or ring-shaped convex portions. Thereby, a fastening force can be improved.

It is a perspective view showing a 1st embodiment of a rotary attachment-and-detachment fastener concerning the present invention. It is a front view which shows the rotary attachment / detachment fastener of the first embodiment. FIG. 3 is a rear view of FIG. 2. FIG. 3 is a plan view of FIG. 2. FIG. 3 is a bottom view of FIG. 2. FIG. 3 is a left side view of FIG. 2. It is the 7A-7A sectional view taken on the line in FIG. It is the 8A-8A sectional view taken on the line in FIG. It is the 9A-9A sectional view taken on the line in FIG. It is explanatory drawing which shows the usage method at the time of fastening the rotary attachment / detachment fastener of this 1st Embodiment. It is the 7A-7A sectional view taken on the line in FIG. 2 when the rotary attachment / detachment fastener of this 1st Embodiment is set to the occlusion state. It is the 9A-9A sectional view taken on the line in FIG. 6 when the rotary attachment / detachment fastener of this 1st Embodiment is set to the occlusion state. It is a perspective view which shows 2nd Embodiment of the rotary attachment / detachment fastener which concerns on this invention. It is a front view which shows the rotary attachment / detachment fastener of the second embodiment. It is a left view of FIG. It is the 16A-16A sectional view taken on the line in FIG. It is the 17A-17A sectional view taken on the line in FIG. It is the 18A-18A sectional view taken on the line in FIG. It is a plane sectional view showing a 3rd embodiment of a rotary attachment-and-detachment fastener concerning the present invention. It is side surface sectional drawing which shows 4th Embodiment of the rotary attachment / detachment fastener which concerns on this invention. It is side surface sectional drawing which shows 5th Embodiment of the rotary attachment / detachment fastener which concerns on this invention.

Explanation of symbols

1A, 1B, 1C, 1D, 1E Rotating detachable fastener 2 Guide base 3, 3D, 3E Fastening piece 4 Energizing member (leaf spring)
5, 6 and 7 Rotating cover 21 Insertion hole 22 Holding flange portion 22a Annular groove 23 Guide portion 24 Guide groove 25 Leaf spring guide groove 26 Stopper plate portion 31 Sliding surface 32, 32D, 32E Female occlusal surface 32D1 Arc-shaped convex portion 32E1 Arc-shaped groove 33 Pushed surface 51 Circular opening 52 Retraction opening 53 Occlusion holding portion 54 Inclined surface 55 Positioning projection 56 Retraction portion B1, B2, B3 Rod-like body b1 Male occlusion (male screw)
b2 Male occlusion (ring-shaped groove)
b3 Male occlusal part (ring-shaped convex part)
H Pilot hole X Fastener Y Fastened object

Claims (4)

A gripping flange portion formed with an insertion hole through which a rod-like body having a male occlusion portion formed of a male screw, a ring-shaped groove, or a ring-shaped convex portion is formed, and is erected from the gripping flange portion. A guide base including a guide portion formed with a guide groove that communicates with the insertion hole along a radial direction perpendicular to the axis of the insertion hole;
A sliding surface that slides with the guide groove, a female occlusal surface that includes a female screw, an arc-shaped convex portion, or an arc-shaped groove that meshes with the male occlusal portion of the rod-shaped body, and the female occlusal surface A fastening piece having a driven surface provided on the back side;
An urging member that urges the fastening piece in a direction to retract from the insertion hole;
A retraction part that is rotatably arranged outside the guide base and that retreats the female occlusal surface of the fastening piece from the inside of the insertion hole in a direction perpendicular to the axis line, and makes the insertion state into which the rod-shaped body can be inserted; An occlusal holding that pushes the driven surface of the fastening piece against the biasing member and advances the female occlusal surface into the insertion hole in the direction perpendicular to the axis so as to be engaged with the male occlusal portion. And a rotary cover provided with a portion in the circumferential direction.   In Claim 1, the said biasing member is comprised from the leaf | plate spring, and while fixing the center part of this leaf | plate spring to the back surface of a fastening piece, it bends or bend | curves both ends so that predetermined | prescribed biasing force may be produced. A rotary attachment / detachment fastener characterized by being slidably disposed in a leaf spring guide groove formed on an outer wall surface of a guide portion in the guide base.   3. The rotary attachment / detachment according to claim 1 or 2, wherein a gentle inclined surface is formed at a sliding contact start position with the driven surface of the fastening piece in the occlusion holding portion of the rotating cover. Fasteners.   4. The rotary attachment / detachment fastening according to claim 1, wherein the retracting portion of the rotating cover is formed as a retracting opening that is opened to a size that allows the fastening piece to be retracted. 5. Ingredients.

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