JP2017180074A - Temporary scaffold joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary scaffold joint capable of being easily manufactured and keeping a lock pin at projected state and stored state.SOLUTION: A temporary scaffold joint 1 comprises: a tenon part 2b formed on a first pipe body 2; a second pipe body 3, which is connected to the first pipe body 2 by being inserted around the tenon part 2b; and a lock pin 10, which has a latching part 12 capable of penetrating open holes 5, 6 formed on the tenon part 2b and the second pipe body 3, and is stored in the pipe. The lock pin 10 comprises: a spring plate 11, which has a leg piece 11b formed by folding a belt-like plate at an intermediate part and the latching part 12 protruding outward from the leg piece 11b; and a shift knob 13 protruding outward. The first pipe body 2 has a long hole 7 in which the shift knob 13 can be inserted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a temporary scaffold joint used to connect a building frame up and down in order to construct a temporary scaffold for building and civil engineering using a pipe building frame, and in particular, connection of a column for a temporary scaffold. Related to the fittings used in the.

  The connection of the temporary scaffolding strut is usually locked in the tenon and the connecting hole formed on the side of the base after fitting the base of the other strut into the tenon provided at the tip of one strut. This is done by inserting a pin to prevent it from coming off.

  A wide variety of lock pins have been proposed. As an example of a widely used lock pin, a spring plate is bent in a U-shape, and a pin portion protruding outward near the end of the spring plate Is known (see Patent Documents 1 to 3). The lock pin is arranged so that the engaging portion is inserted into the tenon portion of one strut so that the engaging portion is inserted through the connecting hole of the tenon portion, and the locking pin is inserted into the base of the other strut to prevent it from coming off. . On the other hand, when separating the struts, the locking portion is pushed in the radial direction to remove it from the through holes of the other struts, and the other struts are pulled out in this state.

  Patent Document 1 (Utility Model Registration No. 2541349) has locking portions (pin members) having inclined surfaces in the circumferential direction at both ends of a leaf spring bent in a U-shape, and is attached to a tenon portion. Disclosed is a lock pin that can be separated from the connecting hole of another strut because the retaining portion is pushed into the tenon portion along the inclined surface by twisting the other strut to be inserted around the axis. Has been.

  Patent Document 2 (Japanese Patent Laid-Open No. 10-183990) and Patent Document 3 (Japanese Patent Laid-Open No. 2006-207535) are provided with projecting portions that project in the width direction at both end portions of a U-shaped strip-shaped plate material, A lock pin in which the protruding portion is bent to form a locking portion is disclosed. The lock pin is easy to manufacture because the leaf spring and the locking portion are integrally formed, and since the locking portion has an inclined surface inclined in the circumferential direction, the lock pin is connected in the same manner as in Patent Document 1. By rotating the supporting column, the locking portion can be detached from the connecting hole of the other supporting column and separated.

Utility Model Registration No. 2541349 Japanese Patent Laid-Open No. 10-183990 JP 2008-8052 A Japanese Examined Patent Publication No. 39-536

  However, the support for the temporary scaffold is not limited to a single pipe, but also includes a bracket with a pin, a beam frame, and the like having a configuration in which two support columns are connected by a horizontal member. In some cases, it may be desired to separate the upper part of the assembled scaffold as a whole.

  At the time of such separation or separation of the brackets, the plurality of columns are connected in a state in which they are prevented from coming off by the lock pins. For this reason, it is not possible with a mechanism that removes the locking portion from the coupling hole by twisting one column around the axis, as in the lock pin releasing methods of Patent Documents 1 to 3 described above.

  For this reason, it is necessary to remove the lock pin from the connecting hole of the other strut inserted into the tenon by pushing the lock pin directly from the outside. Therefore, when the pressing of the locking portion is released, it returns to its original position, and the locking portion cannot be pushed in and maintained in a state of being disconnected from the connection hole of the other column. For this reason, it was practically impossible to separate a plurality of pillars at remote locations by one person.

  On the other hand, a lock pin that can be maintained in a state in which the locking portion is accommodated is disclosed in Patent Document 4 (Japanese Patent Publication No. 39-536). However, these lock pins have a complicated mechanism. For this reason, the work of storing in the tenon portion is complicated, and the sliding cam formed of a member separate from the lock pin is freely movable, which causes noise.

  Therefore, the technical problem to be solved by the present invention is to provide a joint for a temporary scaffolding that can be easily manufactured and that can maintain the lock pin in a protruding and retracted state.

  In order to solve the above technical problem, the present invention provides a temporary scaffold joint having the following configuration.

According to the first aspect of the present invention, the tenon provided in the first tube, and the second tube connected to the first tube by extrapolating the tenon, In the joint for a temporary scaffolding provided with a locking portion that can penetrate through the tenon and the through hole provided in the second tube body, and connected using a lock pin housed in the first tube,
The lock pin is
A spring plate that is formed by bending a belt-like plate material and presses the locking portion against the inner wall side of the tenon portion;
A shift knob provided on the spring plate so as to protrude outward, and capable of advancing and retracting the locking portion by pressing;
The first tubular body is provided with a joint for a temporary scaffolding that is configured to be larger than the outer diameter of the shift knob and has a knob hole through which the shift knob can be inserted.

  According to a second aspect of the present invention, there is provided the joint for a temporary scaffold according to the first aspect, wherein the knob hole is constituted by a long hole that is long in the axial direction.

  According to a third aspect of the present invention, the elongated hole is configured such that there is a gap on the through hole side in a state where the locking portion is inserted into the through hole. An aspect of a temporary scaffold joint is provided.

According to the fourth aspect of the present invention, the spring plate of the lock pin is formed with a leg piece by bending the belt-like plate material into a U-shape at an intermediate portion,
The locking portion is provided near the distal end of the leg piece, and the shift knob is provided at a position closer to the proximal end than the locking portion of the leg piece,
Furthermore, the reinforcing member is provided in the position of the base end side rather than the said shift knob of the leg piece, The joint for temporary scaffolds of any one of the 1st to 3rd aspect provided is provided.

  According to a fifth aspect of the present invention, in the fourth aspect, the reinforcing member is a reinforcing rib formed by folding back a wide portion provided to protrude in the left-right direction on the leg piece. Provide joints for temporary scaffolding.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the locking portion of the lock pin has a sloped surface on the tip side of the tenon portion. Provide joints for temporary scaffolding.

  According to a seventh aspect of the present invention, the locking portion of the lock pin is constituted by a member separate from the spring plate, and the joint for a temporary scaffold according to any one of the first to sixth aspects, I will provide a.

  According to an eighth aspect of the present invention, the shift knob is configured to have a protruding amount larger than that of the lock pin. The temporary scaffold for any one of the first to sixth aspects, Provide a fitting.

  According to a ninth aspect of the present invention, there is provided the temporary scaffold joint according to any one of the first to seventh aspects, wherein the shift knob is formed by bending an intermediate portion of the spring plate. provide.

  According to a tenth aspect of the present invention, the spring plate has a leg piece formed by bending the belt-like plate material into a U-shape at an intermediate portion, and includes the locking portion and the shift knob on at least one leg piece. A joint for a temporary scaffold according to any one of the first to ninth aspects.

According to an eleventh aspect of the present invention,
A first tubular body having a tenon portion and a second tubular body extrapolated to the tenon portion are accommodated and used in the tenon portion of a joint for a temporary scaffold, and the first and second tubular bodies are removed. In the lock pin for stopping,
A spring plate in which leg pieces are formed by bending a belt-like plate material at an intermediate portion;
A locking portion projecting from the at least one leg piece and capable of penetrating a through hole provided in the tenon portion and the second tubular body;
The leg piece provided with the locking portion protrudes outward, is configured to be smaller than the knob hole provided in the tenon portion, and includes a shift knob through which the knob hole can be inserted, Provide a lock pin.

  According to the present invention, since the shift knob provided on the lock pin is inserted through the knob hole that is configured to be large, the shift knob can move within the knob hole. By moving the shift knob, it is possible to shift the position of the lock pin, and thereby it is possible to move the locking portion to a position away from the through hole. Therefore, the non-insertion state to the through-hole of a latching part can be maintained, and the cancellation | release position for isolate | separating a tubular body can be maintained. Further, since the movement of the shift knob is guided by making the knob hole for moving the lock pin a long hole, the movement and return to the normal position and the shift position are surely and easily performed.

  Further, according to the third aspect of the present invention, when the second tubular body comes into contact with the engaging portion provided on the distal end side and an external force is applied to the engaging portion in the moving direction of the second tubular body. However, since the shift knob is in contact with the long hole, the lock pin does not move. For this reason, the operation | work at the time of the connection of a tubular body can be performed reliably.

  Further, according to the fourth aspect of the present invention, since the shift knob is provided on the leg piece, when the shift knob is pressed, the locking portion provided on the same leg piece is accommodated in the storage position and is removed from the through hole. It becomes easy. For this reason, the movement of the lock pin can be facilitated. Further, since the leg piece is provided with a reinforcing member at a position closer to the base end than the shift knob, the leg piece moves as a whole with the intermediate portion of the spring plate as a fulcrum without being bent by the operation of the shift knob. Thereby, it becomes easy to reliably advance and retract the locking portion within the through hole by operating the shift knob.

  Further, according to the fifth aspect of the present invention, since the surface on the tip side of the tenon portion is formed as an inclined surface, when the second tubular body is extrapolated to the tenon portion, the engaging portion is automatically And can be easily connected. Moreover, when the lock knob is operated to move the lock pin to the tenon end side, the locking portion can be easily inserted from the through hole by the inclined surface, and the lock pin can be easily shifted.

It is a perspective view which shows schematic structure of the joint for temporary scaffolding concerning 1st Embodiment of this invention. It is sectional drawing of the joint for temporary scaffolds of FIG. It is a perspective view which shows the structure of the lock pin used for the joint for temporary scaffolds of FIG. It is a front view which shows the structure of the latching | locking part of the lock pin of FIG. It is a front view which shows the structure of the shift knob of the lock pin of FIG. It is a front view which shows the aspect of a deformation | transformation of the lock pin used for the joint for temporary scaffolds of FIG. It is a figure which shows the state before and behind the movement of the shift knob of the lock pin used for the joint for temporary scaffolds of FIG. 1, (a) is in a normal position, (b) has shown the case in a shift position. It is a state transition diagram of the joint for temporary scaffolding which shows the process in which a 1st pipe body and a 2nd pipe body are connected. It is sectional drawing of the joint for temporary scaffolds of FIG. 1 which shows the state which the lock pin moved. It is a state transition diagram which shows the process of moving the lock pin used for the joint for temporary scaffolds of FIG. It is a perspective view which shows schematic structure of the joint for temporary scaffolding concerning 2nd Embodiment of this invention. It is a perspective view which shows the structure of the lock pin used for the joint for temporary scaffolds of FIG. It is a perspective view which shows the structure of the lock pin used for the joint for temporary scaffolding concerning 3rd Embodiment of this invention. It is a perspective view which shows the structure of the lock pin used for the joint for temporary scaffolding concerning 4th Embodiment of this invention. It is sectional drawing which shows schematic structure of the joint for temporary scaffolds concerning 5th Embodiment of this invention. It is a perspective view which shows schematic structure of the joint for temporary scaffolding concerning the modification of 1st Embodiment of this invention.

  Hereinafter, a temporary scaffold joint according to each embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a schematic configuration of a temporary scaffold joint according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the temporary scaffold joint of FIG. The joint 1 for temporary scaffold of this embodiment is a joint for connecting the 1st pipe body 2 and the 2nd pipe body 3 which comprise a temporary scaffold to the axial direction. The first tubular body 2 and the second tubular body 3 are pipe-like members that are used as columns and brackets for temporary scaffolds and are mainly used as vertical members when the scaffolds are assembled. 2a and 3a, and a tenon portion 2b provided at one end of the tubular main bodies 2a and 3a.

  In the present embodiment, the tenon portion 2b protrudes from the lower end of the tubular body 2a by inserting a joint tube 4 having an outer diameter substantially the same as the inner diameter of the tubular body 2a into one end side of the tubular body 2a. It is formed. The first tubular body 2 and the second tubular body 3 are connected by inserting the tenon portion 2 b into the end portion of the other tubular body 3.

  In the vicinity of the tenon portion 2b of the first tubular body 2 and the insertion side end portion 3c of the second tubular body, through-holes 5 and 6 for retaining are respectively provided. As shown in FIG. 2, the through-holes 5 and 6 are provided at two axially opposing positions in the axial direction so as to overlap when the two pipes are connected, and the engagement of the lock pin 10 described later at the time of connection. By the stop portion 12 being inserted, separation of both pipes is prevented.

  A long hole 7 is provided in the vicinity of the tenon portion 2b of the tubular main body 2a. The long holes 7 are an example of the knob hole of the present invention, and are provided in a pair so as to have the same circumferential phase as the through holes 5 and have a long shape in the axial direction.

  A lock pin 10 for preventing separation of the tubular body is disposed in the pipe in the vicinity of the end portion of the tubular bodies 2 and 3 where the tenon portion 2b is provided.

  FIG. 3 is a perspective view showing the configuration of the lock pin. The lock pin 10 includes a spring plate 11 formed in a substantially U shape by bending a belt-shaped metal plate from an intermediate portion, and a locking portion 12 and a shift knob 13 provided so as to protrude from the outer surface of the spring plate 11. I have.

  As shown in FIG. 2, the lock pin 10 is deformed in a direction in which both ends approach each other and is inserted into the tenon portion 2 b from the proximal end side of the spring plate 11. It arrange | positions so that 13 may penetrate the long hole 7. FIG. For this reason, the lock pin 10 can be attached to the tube only by inserting the lock pin, and the lock pin 10 can be easily attached and the tube can be manufactured.

  In the present embodiment, the shift knob 13 is designed such that a gap is formed between the long hole 7 and the peripheral edge 7 a at the normal position where the locking portion 12 is inserted into the through hole 5. .

  The spring plate 11 is formed with leg pieces 11b on both sides thereof by bending a belt-shaped metal plate at the central portion 11a. The leg piece 11b can also be configured so as to improve strength by providing reinforcing ribs along the periphery thereof.

  The locking portion 12 provided in the vicinity of the tip of the outer surface of the leg piece 11b is inserted into both the through holes 5 and 6 when the two tubes are connected to prevent separation of the tubes. As shown in FIG. 6, the distal end side of the locking portion 12 of the leg piece 11b is slightly bent inward so that the inner wall of the tenon portion 2b and the distal end of the leg piece 11b do not interfere with each other. ing.

  As shown in FIGS. 3 and 4, the locking portion 12 is configured by a protrusion having a substantially frustoconical shape, and a base of the inclined surface 12 a and the tenon portion 2 b disposed on the distal end side of the tenon portion 2 b. And a locking surface 12b located on the end side. On the distal end side of the tenon portion 2b of the inclined surface 12a, a displacement preventing surface 12c configured substantially perpendicular to the outer surface of the spring plate 11 is provided. The slip prevention surface 12c is engaged with the peripheral edge 5a of the through hole 5 of the tenon portion 2b, thereby preventing a position shift of the lock pin 10 to be described later, and disengaging the shift pin at the time of shifting, thereby allowing the lock pin to be shifted. It is to make.

  In accordance with the insertion of the second tube body 3 inserted from the distal end side of the tenon portion 2b, the locking portion 12 is pressed against the inner surface side of the tenon portion 2b by the tube insertion end 3c. After the portion 12 is inserted into the through hole 6, as shown in FIG. 2, the locking surface 12 b restricts the movement of both pipes in the separating direction.

  In the present embodiment, the locking portion 12 is configured as a separate member from the spring plate 11, is inserted from the outer surface side of the spring plate 11, and is fixed on the back surface side by a fixing crimp 12 d. The locking portion 12 may be integrally formed of the same metal plate as the spring plate 11. For example, a protruding piece configured to protrude in the width direction on the distal end side of the spring plate 12 is provided on the outer side of the spring plate. It is also possible to create it by folding back.

  The shift knob 13 is provided on the base end side of each leg piece 11b of the spring plate 11, and is configured by a cylindrical protrusion. The height L2 of the protrusion 13a of the shift knob 13 is configured to be longer than the height L1 of the locking portion 12, and is provided with a length that can sufficiently protrude from the long hole 7 when the lock pin 10 is mounted. Yes. In addition, the diameter of the protrusion 13 a is slightly smaller than the width of the long hole 7.

  In the present embodiment, the shift knob 13 is a columnar member configured as a separate member from the spring plate, and is inserted from the outer surface side of the spring plate 11 and fixed by the fixing caulking 13b on the back surface side. The shift knob 13 may also be integrally formed of the same metal plate as the spring plate 11, for example, by folding a protruding piece configured to protrude in the width direction on the spring plate 11 to the outer side of the spring plate. It is also possible to create it.

  As shown in FIG. 6, the lock pin 10 moves integrally with the locking portion so that the leg pieces 11b shown by broken lines are close to each other by pushing the shift knob 13 inward as indicated by an arrow 90 from both sides. To do.

  Further, as shown in FIG. 7 a, by pressing the projection surface 13 c of the shift knob 13 protruding from the long hole 7 with the lock pin 10 mounted in the first tubular body 2, As shown in FIG. 7 (b), the locking is disengaged between the slip prevention surface 12 c and the peripheral edge 5 a of the through hole 5, and the shift knob 13 is moved along the long hole 7 as shown by an arrow 91. The entire pin 10 is shifted.

  Further, when the lock pin 10 is shifted, the lock pin 10 is moved to the lower side in the figure as indicated by an arrow 91 with the surface of the shift knob 13 being pressed. Since the 12 inclined surfaces 12a are pressed along the peripheral edge 5a of the through-hole 5, the leg piece 11b is bent inward, so that a force required for shifting the lock pin 10 can be reduced.

  The temporary scaffold joint according to the present embodiment having the above-described configuration is used as follows. First, when connecting both tubular bodies, as shown in FIG. 8A, the second tubular body 3 is inserted into the tenon portion 2b of the first tubular body 2, and the second tubular body 3 is moved deeply. Let As shown by the arrow 92a, when the insertion of the second tubular body proceeds and the insertion side end portion 3c comes into contact with the inclined surface 12 of the locking portion 12, the insertion side end portion 3c causes the inclined surface of the locking portion 12 to move. By pressing 12a, the leg piece 11b of the lock pin 10 moves inward as shown by an arrow 92b (see FIG. 8B).

  At this time, as indicated by an arrow 93 in FIG. 8C, the shift knob 13 is pushed upward by the lock pin 10 by the movement of the second tube 3, but the shift knob 13 is a peripheral edge on the proximal end side of the long hole 7. Since it hits 7b, the lock pin does not move up. For this reason, it is prevented that the position of the lock pin 10 moves carelessly at the time of connection work of a pipe.

  As shown in FIG. 8D, when the second tubular body 3 is extrapolated deeply into the tenon portion 2b and reaches the position where the respective through holes 5 and 6 overlap each other, as shown by an arrow 94, the spring The locking portion 12 urged outward by the plate 11 returns to the original position. At this position, as described above, the locking portion 12 is inserted into each of the through holes 5 and 6, and the locking surface 12 b of the locking portion 12 is locked to the periphery of the through hole 6. Both pipes are connected in a state where the separation of the body 3 is restricted.

  FIG. 9 is a cross-sectional view of the temporary scaffold joint according to the present embodiment, showing a state in which the lock pin has moved. FIG. 10 is a state transition diagram illustrating a process of moving a lock pin used in the temporary scaffold joint of FIG. In the temporary scaffold joint 1 of the present embodiment, the leg piece 11b is bent inward by pushing the shift knob 13 of the lock pin 10 inward as shown by an arrow 95a in FIGS. As shown, the locking portion 12 is disengaged from the through hole 6 of the second tubular body 3, so that the second tubular body 3 can be separated. For this reason, the separation operation can be easily performed without twisting the first and second tubular bodies 2 and 3.

  Further, in a state where the shift knob 13 is pushed in, as shown in FIG. 10B, as shown by an arrow 96a, the shift knob 13 is lowered along the long hole 7 so that both the lock pin 10 and the arrow 96b are displayed. Move down. At this time, since the shift prevention surface 12c of the locking portion 12 is not locked with the peripheral edge 5a of the through hole 5, the lock pin 10 can be shifted. Moreover, since the inclined surface 12a contacts along the peripheral edge 5a, the locking portion 12 is guided to smoothly move inward.

  Further, as shown in FIG. 10C, when the lock pin 10 is shifted downward to the position where the locking portion 12 is removed from the through hole 5, the lock pin 10 is not moved even if the shift knob 13 is released. The state where the locking of the first and second tubular bodies 2 and 3 is released is maintained without returning to the outside.

  In addition, since the locked state of the tube body can be maintained by the shift of the lock pin 10, the release work can be facilitated even in a bracket or the like, and it is in a remote place. It is possible to separate a plurality of support columns by one person.

  In addition, since the joint for a temporary scaffold according to the present embodiment moves the lock pin in the direction along the inclined surface of the locking portion, the lock pin can be easily shifted. Since the movement of the shift knob in the heel direction is restricted by the long hole when the tube is connected, the problem of inadvertent displacement of the lock pin does not occur. In this embodiment, the tenon portion 2b is described as an example provided on the lower end side of the tubular body. However, even if the tenon portion is provided on the upper end side of the tubular body, it can be applied with the same configuration. It is.

(Second Embodiment)
FIG. 11: is a perspective view which shows schematic structure of the joint for temporary scaffolds concerning 2nd Embodiment of this invention. The joint 21 for temporary scaffolding of this embodiment is a joint for connecting the 1st pipe body 2 and the 2nd pipe body 3 which comprise a temporary scaffold to the axial direction. The first tubular body 2 and the second tubular body 3 are pipe-like members that are used as columns and brackets for temporary scaffolds and are mainly used as vertical members when the scaffolds are assembled. The tenon part 2b is provided in the end of 2a, 3a. The tubular bodies 2 and 3 of this embodiment are used so that the tenon portion 2b is located on the upper end side.

  In the vicinity of the tenon portion 2b of the first tubular body 2 and the insertion side end portion 3c of the second tubular body, through holes 15 and 16 for retaining are respectively provided. A long hole 17 is provided in the axial direction in the vicinity of the tenon portion 2b of the tubular main body 2a.

  A lock pin 20 for preventing separation of the tube body is disposed in the tube near the end portion of the tube bodies 2 and 3 where the tenon portion 2b is provided.

  FIG. 12 is a perspective view showing the configuration of the lock pin of the present embodiment. The lock pin 20 includes a spring plate 20a configured by bending a belt-shaped metal plate from an intermediate portion into a substantially U shape, and a locking portion 22 and a shift knob 23 provided so as to protrude from the outer surface of the spring plate 20a. And is inserted into the tenon portion 2b so that the base end side of the spring plate 20a faces downward.

  The leg piece 21b of the spring plate 20a is longer than that of the first embodiment, and the locking portion 22 and the shift knob 23 are arranged close to the distal end side of the leg piece 21b. By placing the shift knob 23 close to the tip, the pressing force for deformation of the spring plate 20a can be reduced.

  In the present embodiment, as described above, since the leg piece 21b is long and the spring plate is easily deformed, the locking portion 22 has a substantially truncated cone shape including the inclined surface 22a and the locking surface 22b. It is comprised by protrusion and the slip prevention surface 22c is comprised larger than 1st Embodiment.

  In the lock pin according to the present embodiment, when the lock pin 20 is mounted in the first tube 2, the locking surface 22 is displaced by pushing in the projection surface 23 c of the shift knob 23 protruding from the long hole 17. The locking between the prevention surface 22c and the peripheral edge 15a of the through hole 15 is released, and the entire lock pin 10 can be shifted.

  In the present embodiment, the positions of the locking portion 12 and the shift knob 13 are close to each other, and the through hole 5 and the long hole 7 are arranged so as to talk. It is designed to be close to the peripheral edge 17a on the part side and to form a gap on the base end side.

  In this embodiment, when the shift knob 23 is pushed in, the lock pin 20 is also moved downward by lowering the shift knob 23 along the elongated hole 17 to the base end side, that is, the lower side. At this time, since the displacement preventing surface 22c of the engaging portion 22 is disengaged from the peripheral edge 5a of the through hole 15, the lock pin 20 can be shifted. Although it is necessary to push the leg piece 21b until the locking portion 22 is completely removed from the through hole 15, as described above, the position of the shift knob is located on the distal end side of the leg piece 21b. Less force is required for deformation.

(Third embodiment)
FIG. 13: is a perspective view which shows the structure of the lock pin used for the joint for temporary scaffolding concerning 3rd Embodiment of this invention. The temporary scaffold joint according to the present embodiment is different in the lock pins arranged in the tenon portions 2 b of the first tube body 2 and the second tube body 3.

  As shown in FIG. 13, the lock pin 30 is configured by a spring plate 31 that is formed in a substantially U shape by bending a belt-shaped metal plate from an intermediate portion.

  Like the lock pins of the first and second embodiments, the lock pin 30 is inserted into the tenon portion 2b from the proximal end side of the spring plate 31 in a state in which both ends approach each other. 32 is arranged so that the through hole 5 and the shift knob 33 are inserted into the long hole 7.

  The spring plate 31 is formed with leg pieces 31b on both sides thereof by bending a belt-shaped metal plate at the central portion 31a. The leg piece 31b is provided with a reinforcing rib 31c at the periphery of the intermediate portion. In the present embodiment, the reinforcing rib 31c is configured by forming the central portion of the metal plate to be wide and folding the wide portion to the inner surface side.

  As described above, the locking portion 32 and the shift knob 33 are provided on the outer surface of the leg piece 31b.

  In the present embodiment, the locking portion 32 is formed integrally with the spring plate 31 and is created by folding back a protruding piece configured to protrude in the width direction on the distal end side of the spring plate 31 to the outer side of the spring plate. The

  The shift knob 33 is provided at an intermediate portion of each leg piece 31b of the spring plate 31, and in this embodiment, is configured integrally with the spring plate. Specifically, it is configured by bending an intermediate portion of the leg piece 31b of the spring plate 31 so as to protrude outward and projecting outward.

  In the present embodiment, since the shift knob 33 and the locking portion 32 are integrally formed with the spring plate 31 and can be created by folding back with respect to the spring plate 31, the lock pin 30 can be easily manufactured. Can do.

  Further, since the leg piece 31b of the spring plate 31 is provided with the reinforcing rib 31c, the leg piece 31b is not bent in the middle by the operation of the shift knob 33, and can be moved as a whole while maintaining the shape of the leg piece 31b. it can. Accordingly, the operation of the shift knob 33 facilitates the advancement / retraction of the locking portion 32 from the through hole, thereby facilitating the operation.

  Thus, according to each embodiment of the present invention, by moving the shift knob along the long hole extending along the axial direction, the lock pin is shifted so that the locking portion of the lock pin is disengaged from the through hole. Thus, the separation release state of the tube body can be maintained.

(Fourth embodiment)
FIG. 14: is a perspective view which shows the structure of the lock pin used for the joint for temporary scaffolding concerning 4th Embodiment of this invention. The temporary scaffold joint according to the present embodiment is different in the lock pins arranged in the tenon portions 2 b of the first tube body 2 and the second tube body 3.

  As shown in FIG. 14, the lock pin 40 includes a spring plate 41 in which a belt-like metal plate is bent from a middle portion into a substantially U shape, and leg pieces 41 b are formed on both sides.

  Similarly to the lock pin of the third embodiment, the lock pin 40 is inserted into the tenon portion 2b from the base end side of the spring plate 41 in a state in which both ends approach each other, and the locking portion 42 penetrates each. The shift knob 43 is disposed in the hole 5 so as to pass through the long hole 7.

  As described above, the locking portion 42 and the shift knob 43 are provided on the outer surface of the. In the present embodiment, the locking portion and the shift knob 43 are provided only on one leg piece 41b.

  Thus, according to each embodiment of the present invention, by moving the shift knob along the long hole extending along the axial direction, the lock pin is shifted so that the locking portion of the lock pin is disengaged from the through hole. Thus, the separation release state of the tube body can be maintained.

  Further, since the shift knob 43 is provided only on the one leg piece 41b, the movement of the lock pin is easy and the workability is good.

(Fifth embodiment)
FIG. 15: is sectional drawing which shows schematic structure of the joint for temporary scaffolds concerning 5th Embodiment of this invention. The joint 51 for temporary scaffolding of this embodiment is a joint for connecting the 1st pipe body 2 and the 2nd pipe body 3 which comprise a temporary scaffold to the axial direction. The first tubular body 2 and the second tubular body 3 are pipe-like members that are used as columns and brackets for temporary scaffolds and are mainly used as vertical members when the scaffolds are assembled. The tenon part 2b is provided in the end of 2a, 3a. The tubular bodies 2 and 3 of this embodiment are used so that the tenon portion 2b is located on the upper end side.

  In the vicinity of the tenon portion 2b of the first tubular body 2 and the insertion side end portion 3c of the second tubular body, through holes 15 and 16 for retaining are respectively provided. A long hole 17 is provided in the axial direction in the vicinity of the tenon portion 2b of the tubular main body 2a.

  A lock pin 50 for preventing separation of the tube body is disposed in the tube near the end portion of the tube bodies 2 and 3 where the tenon portion 2b is provided.

  The lock pin 50 includes a spring plate 50a configured by bending a belt-shaped metal plate into an arc shape, and a locking portion 52 and a shift knob 53 provided so as to protrude from the outer surface of the spring plate 50a. The stopper 52 and the shift knob 53 are inserted into the tenon portion 2b so as to be on the inner wall side of the first tubular body 2.

  In the present embodiment, the lock pin 50 is moved as a whole by moving the shift knob 53 along the elongated hole 17 toward the distal end side, that is, the upper side while the shift knob 53 is pushed in. At this time, the locking portion 52 is detached from the through hole 15.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, the lock pin shift is configured to shift in the axial direction of the tenon in each of the above embodiments, but is configured to rotate in the circumferential direction as shown in FIG. Also good. Further, the shape of the long holes 7 and 17 for guiding the shift knobs 13 and 23 is determined according to the shape of the lock pins 10 and 20 and the shift direction.

DESCRIPTION OF SYMBOLS 1,21 Joint for temporary scaffold 2 1st pipe body 2a Tubular main body 2b Tenon part 3 2nd pipe body 3a Tubular main body 3c Insertion side edge part 4 Joint pipe 5, 6, 15, 16 Through-hole 7, 17, 57 Long hole 7a, 17a Peripheral edge 10, 20, 30, 40 Lock pin 11, 21, 31, 41 Spring plate 11a Central part 11b, 21b, 31b, 41b Leg piece 12, 22, 32, 42 Locking part 12a , 22a Inclined surface 12b, 22b Locking surface 12c, 22c Shift prevention surface 12d Fixing caulking 13, 23, 33, 43 Shift knob 13a Protrusion 13b Fixing caulking 31c, 41c Reinforcement rib

Claims (11)

A tenon provided on the first tube and a second tube connected to the first tube by extrapolating to the tenon are provided on the tenon and the second tube. In a joint for a temporary scaffolding provided with a locking part capable of penetrating the formed through-hole, and connected using a lock pin housed in the first pipe,
The lock pin is
A spring plate that is formed by bending a belt-like plate material and presses the locking portion against the inner wall side of the tenon portion;
A shift knob provided on the spring plate so as to protrude outward, and capable of advancing and retracting the locking portion by pressing;
The temporary pipe joint according to claim 1, wherein the first tubular body includes a knob hole configured to be larger than an outer diameter of the shift knob and capable of being inserted through the shift knob.   The joint for a temporary scaffold according to claim 1, wherein the knob hole is formed by a long hole that is long in an axial direction.   The joint for a temporary scaffold according to claim 2, wherein the long hole is configured such that there is a gap on the through hole side in a state where the locking portion is inserted into the through hole. The spring plate of the lock pin is formed in a leg piece by bending the belt-like plate material into a U shape at the middle part,
The locking portion is provided near the distal end of the leg piece, and the shift knob is provided at a position closer to the proximal end than the locking portion of the leg piece,
The joint for a temporary scaffold according to any one of claims 1 to 3, further comprising a reinforcing member provided at a position closer to a base end side than the shift knob of the leg piece.   The joint for a temporary scaffold according to claim 4, wherein the reinforcing member is a reinforcing rib formed by folding back a wide portion provided to protrude in the left-right direction on the leg piece.   The joint for a temporary scaffold according to any one of claims 1 to 5, wherein the locking portion of the lock pin has a sloped surface on the tip side of the tenon portion.   The joint for a temporary scaffold according to any one of claims 1 to 6, wherein the locking portion of the lock pin is configured by a member different from the spring plate.   The joint for a temporary scaffold according to any one of claims 1 to 6, wherein the shift knob is configured to have a protruding amount larger than that of the lock pin.   The joint for a temporary scaffold according to any one of claims 1 to 7, wherein the shift knob is configured by bending an intermediate portion of the spring plate.   10. The spring plate according to claim 1, wherein a leg piece is formed by folding the belt-like plate material in a U-shape at an intermediate portion, and the locking portion and the shift knob are provided on at least one leg piece. The joint for temporary scaffolding as described in any one of these. A first tubular body having a tenon portion and a second tubular body extrapolated to the tenon portion are accommodated and used in the tenon portion of a joint for a temporary scaffold, and the first and second tubular bodies are removed. In the lock pin for stopping,
A spring plate in which leg pieces are formed by bending a belt-like plate material at an intermediate portion;
A locking portion projecting from the at least one leg piece and capable of penetrating a through hole provided in the tenon portion and the second tubular body;
The leg piece provided with the locking portion protrudes outward, is configured to be smaller than the knob hole provided in the tenon portion, and includes a shift knob through which the knob hole can be inserted, Lock pin.

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