JP4000136B2 - Locking pin - Google Patents

Description

  The present invention relates to a locking pin used in a construction site or the like, and more particularly to a locking pin suitable for use in locking a hollow material such as a scaffold material and other members.

  Used in construction sites, etc., to engage a hollow material such as a scaffolding material with other members and to maintain the engaged state so that they do not come out of each other, using a locking pin inserted into the mutual locking hole It had been.

  The locking pin P of the prior art 1 in which the stopper shown in FIG. 17 and FIG. 18 is integral with the rod-shaped portion is a right triangle formed by a spring at the tip of the rod-shaped portion that can be inserted into the hollow material C and the locking hole H of the other member. The stopper S1 protrudes in the shape of a cylinder, and when the stopper S1 is inserted, the inclined side is depressed by the locking hole H of the hollow material C, and when the tip comes out of the locking hole H, the stopper S1 is pulled by a spring from the rod-shaped body. The locking pin P protrudes from the hollow material C so as not to come back and come off. 17 and 18, the conventional locking pin P having no flange on the side opposite to the stopper S1 is bent into the locking hole H after bending the end opposite to the stopper S1. Thus, the hollow material and the other member are reliably locked without being pulled out from either side of the locking hole H.

  In addition, there is also known a configuration using a snap pin SP or a split pin separated from the locking pin P of the prior art 2 as shown in FIGS. 19 and 20 as a stopper. After inserting the locking pin P into the locking hole H provided in the radial direction, the straight portion SP1 of the snap pin SP is inserted into the hole SP3 at the tip of the locking pin protruding from the locking hole H, and the straight portion S1 and the waveform The hollow member W is sandwiched between the portions SP2 so that the entire locking pin P does not come out of the locking hole H.

  In addition, in the conventional locking pin, it is necessary to form a stopper portion on the side opposite to the stopper portion. First, as shown in FIGS. 19 and 20, a flange portion having a diameter larger than the diameter of the rod-shaped portion is formed. There is also an embodiment in which the stopper portion is used, but in the case where the rod-like portion remains straight as shown in FIGS. 17 and 18, the opposite end portion is bent after being locked in the locking hole H of the hollow material C. When there is a hole at the reverse end, a wire or the like is passed through the hole and fixed to the vertical frame to form a stopper.

  However, if the stopper S1 has a structure protruding by a spring as in the prior art 1, when the stopper S1 protrudes in the middle of the hollow material, the stopper S1 does not come out in the reverse direction. Therefore, it is difficult to reuse, and in order to reuse, the bent portion as the stopper at the other end is returned straight and moved in the direction toward the stopper S1 to move the locking pin P itself from the locking hole H of the hollow material C. There was no other way but to remove it. In addition, as the locking pin P having the same shape as in FIGS. 19 and 20, the stopper is inseparably integrated with the rod-shaped portion, the stopper protruding in a right triangular shape at the tip of the rod-shaped portion is projected without depending on the spring. However, such a conventional stopper does not return to its original weight even if it is rotated 180 degrees, and when it is removed from the locking hole H, such as when it is disassembled, as with a spring stopper. It was pulled out in the direction of the stopper.

  Further, when the stopper is a separation type such as the snap pin SP separated from the locking pin P as in the prior art 2, it is necessary to insert the snap pin SP into the small hole SP3 of the locking pin P one by one. There was a problem that the work was troublesome. Furthermore, since it is separated, storage is troublesome, and there is a problem that either the number of locking pins P or snap pins SP is insufficient during use.

In order to solve the above-mentioned problem, it has a rod-shaped portion and a stopper portion, the rod-shaped portion is formed in a rod-shaped body, a stopper portion is provided on one end side of the rod-shaped portion, and the stopper portion is in the rod-shaped portion bar-shaped direction. It is a locking pin that moves in a substantially right angle direction so that a part of the stopper comes out of the diameter of the rod-shaped part,
The stopper part consists of a stopper hole provided in a direction perpendicular to the bar-shaped direction of the rod part and a stopper that is movably provided with a length within the length of the stopper hole, and the entire length of the stopper is within the stopper hole. Proposing a locking pin that is configured so that the stopper moves in a substantially right-angle direction by rotating the rod-shaped part approximately 180 degrees from the accommodated state so that a part of the stopper protrudes from the diameter of the rod-shaped part. To do.

In addition, it has a rod-shaped portion and a stopper portion, the rod-shaped portion is formed in a rod-shaped body, a stopper portion is provided on one end side of the rod-shaped portion, and the stopper portion moves in a direction substantially perpendicular to the rod-shaped portion rod-shaped direction. A locking pin in which a part of the stopper comes out of the diameter of the rod-shaped part,
The stopper part consists of a stopper hole provided in a direction perpendicular to the rod-like direction of the rod-like part and a stopper provided with a length within the length of the stopper hole and movably provided. The stopper hole is a large-diameter hole part. There is a step with two or more hole diameters between the small diameter hole part and the small diameter hole part in the middle, penetrating the rod part, and providing a stopper locking projection that makes the hole small near the rod part surface of the large diameter hole part. The large-diameter rod portion is positioned on the large-diameter hole side of the stopper hole, and the small-diameter rod portion is positioned on the small-diameter hole portion so that it can be moved freely in the stopper hole. A locking pin is proposed in which the stopper is configured to move by rotating in a substantially right angle direction so that a part of the stopper protrudes from the diameter of the rod-shaped portion.

Furthermore, it has a rod-shaped portion and a stopper portion, the rod-shaped portion is formed in a rod-shaped body, a stopper portion is provided on one end side of the rod-shaped portion, and the stopper portion rotates in a direction substantially perpendicular to the rod-shaped portion rod-shaped direction. A locking pin in which a part of the stopper comes out of the diameter of the rod-shaped part,
The stopper part is composed of a stopper groove part formed over the diameter from the end of the rod-like part to the vicinity of the stick-like direction, and a stopper provided in the stopper groove part so as to be capable of changing the angle. Two stoppers are provided, and the stopper is formed of a rectangular plate-like body having a longer side and a shorter side than the diameter of the rod-like part, and has an engaging groove that engages with the two protrusions of the stopper groove part. Is a bowl-shaped groove that opens in the long side and bends in a substantially right angle direction and ends in the long side direction, and the stopper moves in the bar-shaped direction of the rod-shaped portion with the long-side direction directed to the rod-shaped portion. And the rod-shaped portion is rotated with respect to the rod-shaped direction to move the long side direction in a direction substantially perpendicular to the rod-shaped portion rod-shaped direction so that a part of the stopper protrudes from the diameter of the rod-shaped portion. Proposed locking pin That.

Furthermore, it has a rod-shaped portion and a stopper portion, the rod-shaped portion is formed in a rod-shaped body, a stopper portion is provided on one end side of the rod-shaped portion, and the stopper portion rotates in a direction substantially perpendicular to the rod-shaped portion rod-shaped direction. Then, it is a locking pin where a part of the stopper comes out from the diameter of the rod-shaped part,
The stopper part is composed of a stopper groove part formed over the diameter from the end of the rod-like part to the vicinity of the stick-like direction, and a stopper provided in the stopper groove part so as to be capable of changing the angle. A rotation center axis and an engagement hole are provided, and the stopper is a rectangular plate-like body having a longer side and a shorter side than the diameter of the rod-like portion, and rotates around the rotation center axis of the stopper groove. It has an engagement protrusion that engages with the joint hole, and the engagement protrusion can be locked to the engagement hole with the long side direction directed to the rod-shaped portion and the rod-shaped portion is rotated and long with respect to the rod-shaped direction. A locking pin is proposed in which the side direction is rotated in a direction substantially perpendicular to the rod-shaped portion and the stopper is configured such that a part of the stopper protrudes from the diameter of the rod-shaped portion.

  According to this invention, the stopper pin is attached to and integrated with the locking pin, and the rod-like portion moves or rotates in a direction substantially perpendicular to the rod-like direction so that a part of the stopper comes out of the diameter of the rod-like portion. Since it is configured as described above, it is easy to perform operations such as insertion, locking, and extraction of the locking pin in the engagement of the hollow material, etc., and since it is not separated, the operation such as storage and movement can be easily performed. is there. Furthermore, if a stop such as a flange is formed in advance on the opposite side of the stopper of the locking pin, the locking pin can be easily pulled out on the opposite side of the stopper during disassembly. It can be used repeatedly without being damaged by bending or reworking.

  Furthermore, in the inventions according to claim 2 and claim 3, the stopper can be easily taken in and out from the diameter of the locking pin only by rotating the locking pin about 180 degrees, and the protruding state of the stopper and the inside of the stopper hole Because the storage state is very stable and easily visible, it is very easy to insert, lock, and pull out the locking pins when engaging the hollow material with other members. There are effects that can be performed.

  Next, the present invention will be described. The locking pin 1 according to the present invention includes a rod-shaped portion 2, a stopper portion 3, and a stopper portion 4. The rod-shaped portion 2 of the locking pin 1 is formed in a rod-shaped body, and a stopper portion 3 is provided on one end side of the rod-shaped portion 2, and the stopper portion 3 moves or rotates in a direction substantially perpendicular to the rod-shaped direction of the rod-shaped portion 2. The stopper 30 is configured such that a part of the stopper 30 protrudes from the diameter of the rod-shaped portion 2. A stopper portion 4 is formed on the opposite end side of the stopper portion 3 of the rod-like portion 2.

  1 to 6 show a locking pin 1a which is one of the first embodiments of the present invention. 1 and 4 show a plane, and FIGS. 2 and 5 are front sectional explanatory views of FIGS. 1 and 4, respectively. 3 is a side view showing an arrow A in FIG. 2, and FIG. 6 is a side view showing an arrow B in FIG.

  The locking pin 1a showing the first embodiment of the present invention includes a rod-shaped portion 2a, a stopper portion 3a, and a stopper portion 4a. The rod-shaped portion 2a of the locking pin 1a is formed in a rod-shaped body, and a stopper portion 3a is provided on one end side of the rod-shaped portion 2a. The rod-shaped portion 2a is a columnar rod having a constant diameter, and a flange-shaped stopper 4a is provided continuously and integrally on the other end side.

  The stopper portion 4a is a flange portion having a constant thickness and a diameter larger than the diameter of the rod-shaped portion 2a and at least a diameter larger than the diameter of the locking hole H of the target hollow material C. The rod-shaped portion on the opposite side to the stopper portion 3a. It is integrally formed at the end of the portion 2a. The reference portion 40 is provided at one place on the peripheral surface portion of the flange disk of the stop portion 4a. The position of the peripheral surface portion of the reference portion 40 is provided at a position where the phase angle is the same in any of the opening portions of the stopper hole 31 described later in the circumferential direction of the rod-shaped portion and the flange portion. In this embodiment, the position of the reference portion 40 is provided at the same phase position as the opening portion of the large-diameter hole portion 310 of the stopper hole 31. The reference portion 40 is formed of a deep hole in this embodiment, but may be a mark that can be distinguished from the other portion of the stopper 4a such as a protrusion or a color-specific mark.

  The stopper portion 3a includes a stopper hole 31 provided in a direction perpendicular to the rod-like direction of the rod-like portion 2a, and a stopper 30 provided with a length within the hole length of the stopper hole 31 and movably provided. The total length of the stopper 30 is a length within the stopper hole 31, that is, within the length of the diameter of the rod-shaped portion 2 a and fits in the stopper hole 31. The stopper 30 is rotated from the state in which the stopper 30 is accommodated in the stopper hole 31 (see FIG. 2 and FIG. 3) by rotating the rod-shaped portion 2a by approximately 180 degrees with the center of the diameter of the rod-shaped body as the rotation axis. The stopper 30 is configured so that a part of the stopper 30 protrudes from the stopper hole 31 and protrudes from the diameter of the rod-shaped portion 2a (see FIGS. 5 and 6).

  The stopper hole 31 of the stopper portion 3a of the first embodiment has two holes with different diameters, a large diameter hole portion 310 and a small diameter hole portion 311, having a step in the middle and a straight line, and the rod-shaped portion 2a. It is provided penetrating in the radial direction. The stopper hole 31 is provided with a stopper locking projection 312 in the vicinity of the opening that makes the opening of the large-diameter hole 310 small in diameter. The distance between the stopper locking projections 312 is formed to be shorter than the diameter of the large-diameter bar portion 300 of the stopper 20.

  The stopper 30 of the stopper portion 3 a is moved to the stopper hole 31 with the large-diameter rod portion 300 positioned on the large-diameter hole portion 310 side of the stopper hole 31 and the small-diameter rod portion 301 positioned on the small-diameter hole portion 311. It is provided freely.

  The outer diameter of the large diameter rod portion 300 of the stopper 30 is formed slightly smaller than the inner diameter of the large diameter hole portion 310 of the stopper hole 31 and larger than the inner diameter of the small diameter hole portion 311. The length of the large-diameter bar portion 300 of the stopper 30 is shorter than the length of the large-diameter hole portion 310 of the stopper hole 31. In this embodiment, the length of the large-diameter bar portion 300 is at least three times the length of the large-diameter hole portion 310.

  The outer diameter of the small diameter rod portion 301 of the stopper 30 is formed slightly smaller than the inner diameter of the small diameter hole portion 311 of the stopper hole 31, and the length of the small diameter rod portion 301 is formed longer than the length of the small diameter hole portion 310. . In this embodiment, the length of the small diameter rod portion 301 is twice or more the length of the small diameter hole portion 310.

  The stopper 30 rotates the rod-shaped portion 2a by approximately 180 degrees with the center of the diameter of the rod-shaped body as a rotation axis, so that the stopper 30 moves in a direction substantially perpendicular to the rod-shaped portion 2a, and a part of the stopper 30 is moved to the stopper hole 31. It protrudes from the diameter of the rod-shaped part 2a.

  Next, the operation of the locking pin 1a according to the first embodiment of the present invention will be described. As shown in FIGS. 1 to 3, when the reference portion 40 of the stopper portion 4a is positioned downward, the openings of the large-diameter hole portion 310 of the stopper hole 31 are provided at the same phase angle position. It becomes a state. Similarly, as shown in FIGS. 4 to 6, when the locking pin 1 is rotated 180 degrees and the reference portion 40 of the stopper 4 a is positioned upward, the opening of the large-diameter hole 310 of the stopper hole 31. Is in an upward state.

  As shown in FIGS. 1 to 3, when the opening of the large-diameter hole portion 310 of the stopper hole 31 is in the downward state, the stopper 30 has the large-diameter rod portion 300 and the large-diameter hole of the stopper hole 31. The entire stopper 30 is located in the stopper hole 31 and does not protrude from the rod-shaped portion 2a without being caught by the stopper locking projection 312 in the opening of the portion 310 and falling downward.

  In this state, the operator inserts into the locking hole H of the hollow material C. Next, when the reference portion 40 of the stop portion 4a of the locking pin 1a is viewed and the rod-like portion 2a of the locking pin 1a is rotated about 180 degrees around the rod-shaped axis, the diameter of the stopper hole 31 is increased. The opening of the portion 310 is in an upward state. In this state, the stopper 30 falls in the stopper hole 31, the large-diameter rod portion 300 is caught by the step between the small-diameter hole portion 311 and the large-diameter hole portion 310, and does not fall any further. In this state, as shown in FIGS. 4 to 6, the small diameter rod portion 301 of the stopper 30 protrudes outside the opening of the small diameter hole portion 311.

  Due to the protrusion of the small diameter rod portion 301 of the stopper 30 from the surface of the rod-shaped portion 2a, the locking pin 1a does not come off the locking hole H even if it is pulled in the locking hole H of the hollow material C.

  Next, when removing the locking pin 1a from the locking hole H of the hollow material C, the operator again looks at the reference portion 40 of the locking portion 4a of the locking pin 1a, and the rod-shaped portion 2a of the locking pin 1a. Is rotated about 180 degrees around the rod-shaped axis, the opening of the large-diameter hole portion 310 of the stopper hole 31 is in a downward state, that is, the state shown in FIGS. 1 to 3, and in this state, the stopper 30 is , Stored in the stopper hole 31 and does not protrude from the surface of the rod-like portion 2a. In this state, the operator pulls the locking pin 1a from the locking hole H and removes it.

  Next, FIG. 7 thru | or FIG. 11 shows the latching pin 1b which is one of 2nd Embodiment of this invention. FIG. 7 is a plan view, and FIGS. 8 to 11 are front cross-sectional explanatory views showing the operating state of the stopper.

A locking pin 1b showing a second embodiment of the present invention includes a rod-shaped portion 2b, a stopper portion 3b, and a stopper portion 4b. The rod-like portion 2b of the locking pin 1b is formed in a rod-like body, and a stopper portion 3b is provided on one end side. The rod-like portion 2b is a cylindrical rod having a constant diameter, and a stop portion 4b is provided on the opposite end side of the stopper portion 3b. In this embodiment, the stop portion 4b is a stop hole, and after insertion, a wire or the like is inserted, or the end portion is bent so as not to come out to be a stop portion. As another example of the stopper 4b, a flange may be formed to serve as the stopper.

  The stopper portion 3b of the locking pin 1b showing the second embodiment of the present invention comprises a stopper groove portion 5 and a stopper 6 provided in the stopper groove portion 5 so as to be capable of changing the angle.

  The stopper groove 5 is a groove having a width of about several millimeters formed from the end of the rod-shaped portion 2b to the vicinity of the end in the rod-shaped direction in the radial direction of the rod. The stopper groove portion 5 is provided with two protrusions 50 and 51 arranged in the rod-like direction of the rod-like portion 2b, and the stopper 6 is rotatably locked to the protrusions 50 and 51.

  The stopper 6 is a rectangular plate-like body having a long side longer than the diameter of the rod-like part 2b and a short short side, and is engaged with the two protrusions 50 and 51 of the stopper groove part 5 so as to be movable and rotatable. A groove 60 is provided. The engagement groove 60 is formed in a bowl-shaped groove that forms an opening 60a on the long side and bends in a substantially right angle direction and ends in the long side direction. The stopper 6 is divided into a short short piece portion 61 and a bent piece portion 62 with the engagement groove 60 interposed therebetween.

  Next, the operation of the locking pin 1b according to the second embodiment of the present invention will be described. FIG. 8 shows a state in which the locking pin 1 b is inserted into the locking hole H of the hollow material C. In the state of FIG. 8, the opening 60a of the engagement groove 60 faces upward, the short piece 61 is locked on the protrusions 50 and 51, and the long side of the stopper 6 is parallel to the bar direction of the rod-like part 2b. Therefore, the entire stopper 6 does not protrude in the radial direction of the rod-like portion 2b. Therefore, it can be inserted into and taken out from the locking hole H of the hollow material C.

  After the locking pin 1b is inserted into the locking hole H of the hollow material C, the stopper pin 6 is moved in the direction of the arrow in FIG. 8, that is, the stopper 6 is moved in the locking pin insertion direction, and as shown in FIGS. 61 is rotated and put between the two protrusions 50 and 51. Then, as shown in FIG. 11, after the stopper 6 is rotated about 90 degrees, the stopper 6 is dropped in the downward direction, which is the direction of the arrow, and the engaging groove 60 is inserted into the protrusion 50 on the end side of the rod-like portion 2b. Insert it. Then, since the stopper 6 has a longer side that is longer than the diameter of the rod-shaped portion 2b, the stopper 6 protrudes from the diameter of the rod-shaped portion 2b. Therefore, the locking pin 1b cannot be removed from the locking hole H in the state of the stopper 6 shown in FIG.

  When pulling out the locking pin 1b from the locking hole H of the hollow material C, the stopper 6 is moved in the opposite direction to that of FIGS. 11 to 10 and 9, and the long side longer than the diameter of the rod-shaped portion 2b is the rod of the rod-shaped portion 2b. It rotates so that it may turn to a direction, and it returns to the state of FIG. In this state, the hollow material C can be inserted into and removed from the locking hole H.

  Next, FIG. 12 thru | or FIG. 16 shows the locking pin 1c which is one of 3rd Embodiment of this invention. 12 and 13 are plan views, and FIGS. 14 to 16 are front cross-sectional explanatory views showing the operating state of the stopper.

  A locking pin 1c showing a third embodiment of the present invention includes a rod-shaped portion 2c, a stopper portion 3c, and a stopper portion 4c. The rod-like portion 2c of the locking pin 1c is formed in a rod-like body, and a stopper portion 3c is provided on one end side of the rod-like portion 2c. The rod-shaped portion 2c is a columnar rod having a constant diameter, and a stop portion 4c is provided on the opposite end side of the stopper portion 3c. In this embodiment, the stopping portion 4c remains a straight rod-like body, and is shaped to be bent to be a stopping portion after insertion of the rod-like portion 2c of the locking hole H of the hollow material C. However, as another embodiment, A flange portion may be formed as a stop portion, or a stop hole may be formed.

  The stopper portion 3c of the locking pin 1c showing the third embodiment of the present invention has a stopper groove portion 7 formed over the diameter from the end portion of the rod-like portion 2c to the vicinity of the end portion in the rod-like direction, and an angle to the stopper groove portion 7 The stopper 8 is provided so as to be movable. The stopper 8 is made of a rectangular plate having a longer side and a shorter side than the diameter of the rod-like portion 2 c, and the thickness thereof is a thin plate-like body with a slight gap from the width of the stopper groove portion 7.

  The stopper groove portion 7 is provided with a rotation center shaft 70 and an engagement hole 71 arranged in the rod-like direction of the rod-like portion 2c. The stopper 8 has an engagement protrusion 80 that rotates about the rotation center axis 70 of the stopper groove 7 and engages with the engagement hole 71. The engaging protrusion 80 is spherical and can be projected and retracted. Further, a spring 72 is provided on the rotation center shaft 70 of the stopper groove 7 and presses the stopper 8 toward the engagement hole 71 with the urging force of the spring.

  Since the stopper 8 can lock the engaging protrusion 80 in the engaging hole 71 of the stopper groove 7 with the long side direction directed to the rod-shaped portion, the stopper 8 is in the locked state of the rod-shaped portion 2c. It does not protrude in the radial direction. When the stopper 8 is rotated in the radial direction from the rod-shaped portion to the rod-shaped portion, the stopper 8 is placed in the stopper groove 7 around the rotation center shaft 70 from FIG. 12 to FIG. Twist in the direction to remove. As shown in FIG. 13, when the locking projection 80 is removed from the locking hole 71, the stopper 8 becomes rotatable about the rotation center shaft 70. Next, the stopper 8 is rotated with respect to the rod-shaped portion bar-shaped direction around the rotation central axis 70 so that the long side direction is substantially perpendicular to the rod-shaped portion rod-shaped direction. This operation is shown in FIGS. In the state shown in FIG. 16, the stopper 8 is substantially perpendicular to the rod-like portion direction, a part of the stopper 8 protrudes from the diameter of the rod-like portion 2c, and the engaging protrusion 80 is also formed on the rod-like portion 2c. Since it protrudes from the diameter and abuts on the rod-like portion 2c, it is difficult to return to the original state. Thus, when the stopper 8 becomes a right angle with the rod-shaped part 2c, the locking pin 1c of the third embodiment is engaged with the locking hole H of the hollow material C.

  When the locking pin 1c is detached from the locking hole H, the locking pin 1c may be operated in reverse. That is, the stopper 8 is twisted in the stopper groove 7 around the rotation center shaft 70 so that the locking projection 80 is not in contact with the groove end portion as much as possible while rotating the stopper 8 from a state perpendicular to the rod-shaped portion. Then, the stopper 8 is in a state parallel to the rod-shaped portion bar-shaped direction and enters the stopper groove 7. When the operator releases the hand in this state, the engagement protrusion 80 of the stopper 8 is pushed toward the engagement hole 71 by the biasing force of the spring 72, so that the engagement protrusion 80 is engaged with the engagement hole 71. become. In this state, the locking pin 1c can be inserted into and removed from the locking hole H of the hollow material C.

  It is highly likely to be used as a locking pin that is inserted into a hole between members such as scaffolding materials at a construction site and locked. In particular, at least one of them is likely to be used by being used for a locking pin such as a hollow material.

The top view of the locking pin which is one of 1st Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 1st Embodiment of this invention Similarly, arrow A in FIG. The top view of the locking pin which is one of 1st Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 1st Embodiment of this invention Similarly, view B in Figure 5 The top view of the latching pin which is one of 2nd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 2nd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 2nd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 2nd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 2nd Embodiment of this invention The top view of the latching pin which is one of 3rd Embodiment of this invention The top view of the latching pin which is also one of 3rd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 3rd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 3rd Embodiment of this invention Front sectional explanatory drawing of the locking pin which is also one of 3rd Embodiment of this invention Front explanatory view showing the first prior art of the locking pin Front explanatory view showing the first prior art of the locking pin Front explanatory view showing the second prior art of the locking pin Side surface explanatory drawing which shows the 2nd prior art of a locking pin

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Locking pin 2 Bar-shaped part 3 Stopper part 30 Stopper 4 Stopping part 1a Locking pin (1st Embodiment)
2a Rod-like part (first embodiment)
3a Stopper (first embodiment)
30 Stopper 300 Large-diameter rod portion 301 Small-diameter rod portion 31 Stopper hole 310 Large-diameter hole portion 311 Small-diameter hole portion 312 Stopper locking projection 4a Stopping portion (first embodiment)
40 Reference part 1b Locking pin (second embodiment)
2b Rod-like part (second embodiment)
3b Stopper (second embodiment)
4b Stopping part (second embodiment)
5 Stopper groove 50 Protrusion 51 Protrusion 6 Stopper 60 Engagement groove 60a Groove opening 61 Short piece 62 Curved piece 1c Locking pin (third embodiment)
2c Rod-shaped part (3rd Embodiment)
3c Stopper (Third embodiment)
4c Stopping part (third embodiment)
7 Stopper groove 70 Rotation center shaft 71 Engagement hole 72 Spring 8 Stopper 80 Engagement protrusion

Claims (4)

It has a rod-shaped part and a stopper part, the rod-shaped part is formed in a rod-shaped body, a stopper part is provided on one end side of the rod-shaped part, and the stopper part moves in a direction substantially perpendicular to the rod-shaped part bar-shaped direction to A locking pin with a part protruding from the diameter of the rod-shaped part,
The stopper part consists of a stopper hole provided in a direction perpendicular to the bar-shaped direction of the rod part and a stopper that is movably provided with a length within the length of the stopper hole, and the entire length of the stopper is within the stopper hole. A locking pin characterized in that the stopper is moved in a substantially right angle direction by rotating the rod-shaped portion by approximately 180 degrees from the accommodated state so that a part of the stopper comes out of the diameter of the rod-shaped portion. It has a rod-shaped part and a stopper part, the rod-shaped part is formed in a rod-shaped body, a stopper part is provided on one end side of the rod-shaped part, and the stopper part moves in a direction substantially perpendicular to the rod-shaped part bar-shaped direction to A locking pin with a part protruding from the diameter of the rod-shaped part,
The stopper part consists of a stopper hole provided in a direction perpendicular to the rod-like direction of the rod-like part and a stopper provided with a length within the length of the stopper hole and movably provided. The stopper hole is a large-diameter hole part. There is a step with two or more hole diameters between the small diameter hole part and the small diameter hole part in the middle, penetrating the rod part, and providing a stopper locking projection that makes the hole small near the rod part surface of the large diameter hole part. The large-diameter rod portion is positioned on the large-diameter hole side of the stopper hole, and the small-diameter rod portion is positioned on the small-diameter hole portion so that it can be moved freely in the stopper hole. A locking pin characterized in that, when rotated, the stopper moves in a substantially right angle direction so that a part of the stopper comes out of the diameter of the rod-shaped portion. It has a rod-shaped part and a stopper part, the rod-shaped part is formed in a rod-shaped body, a stopper part is provided on one end side of the rod-shaped part, and the stopper part rotates in a substantially perpendicular direction with respect to the rod-shaped part bar-shaped direction. Is a locking pin in which a part of the pin protrudes from the diameter of the rod-shaped part,
The stopper part is composed of a stopper groove part formed over the diameter from the end of the rod-like part to the vicinity of the stick-like direction, and a stopper provided in the stopper groove part so as to be capable of changing the angle. Two stoppers are provided, and the stopper is formed of a rectangular plate-like body having a longer side and a shorter side than the diameter of the rod-like part, and has an engaging groove that engages with the two protrusions of the stopper groove part. Is a bowl-shaped groove that opens in the long side and bends in a substantially right angle direction and ends in the long side direction, and the stopper moves in the bar-shaped direction of the rod-shaped portion with the long-side direction directed to the rod-shaped portion. And the rod-shaped portion is rotated with respect to the rod-shaped direction to move the long side direction in a direction substantially perpendicular to the rod-shaped portion rod-shaped direction so that a part of the stopper protrudes from the diameter of the rod-shaped portion. Locking pin. It has a rod-shaped part and a stopper part, the rod-shaped part is formed in a rod-shaped body, a stopper part is provided on one end side of the rod-shaped part, and the stopper part rotates in a substantially perpendicular direction with respect to the rod-shaped part bar-shaped direction. Is a locking pin in which a part of the pin protrudes from the diameter of the rod-shaped part,
The stopper part is composed of a stopper groove part formed over the diameter from the end of the rod-like part to the vicinity of the stick-like direction, and a stopper provided in the stopper groove part so as to be capable of changing the angle. A rotation center axis and an engagement hole are provided, and the stopper is a rectangular plate-like body having a longer side and a shorter side than the diameter of the rod-like portion, and rotates around the rotation center axis of the stopper groove. It has an engagement protrusion that engages with the joint hole, and the engagement protrusion can be locked to the engagement hole with the long side direction directed to the rod-shaped portion and the rod-shaped portion is rotated and long with respect to the rod-shaped direction. A locking pin characterized in that the side direction is rotated in a direction substantially perpendicular to the bar-shaped part and the stopper part is protruded from the diameter of the bar-shaped part.

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