JP3212391U - Scaffolding plate connection member - Google Patents

Abstract

The present invention provides a connection member for a scaffold plate that allows a single worker to efficiently remove a scaffold plate from a horizontal member. A connection main body, an upper pin portion, a lower pin portion, and a movable engagement portion are provided. The movable engagement portion includes a first upper locking portion and an upper pin of an upper groove hole portion. An engagement position where the first lower locking portion and the lower pin portion 35 of the portion 30 and the lower groove hole portion 55 are locked and engaged with the horizontal member 3, and a second upper locking portion of the upper groove hole portion, When the upper pin portion 30 and the second lower locking portion of the lower groove hole portion and the lower pin portion 35 are respectively locked, the engagement main body 41 of the movable engagement portion is engaged when the flange 25 of the connection main body is engaged with the horizontal member. And the third upper locking portion and the upper pin portion of the upper groove hole portion and the third lower locking portion and the lower pin portion 35 of the lower groove hole portion are respectively locked and moved to the engagement position. It is slid between a holding position where the opening of the opening 26 is held. [Selection] Figure 3

Description

  The present invention relates to a connecting member for a scaffold plate for attaching a scaffold plate to a horizontal member laid between two support columns.

  In general, a temporary scaffolding is installed on the outer periphery of a building during construction of the building. In this temporary scaffold, a plurality of struts are arranged at predetermined intervals, and a rectangular temporary scaffolding plate is constructed between the struts to form a multi-level scaffold. In such a temporary scaffold, the scaffolding plate has two hook-shaped connection members on the short side of the rectangular shape, and the two connection members are attached to the horizontal member attached between the two parallel columns. It will be erected.

  For example, a hook-shaped connection body and a movable engagement attached to the connection body so as to be movable up and down so that the anchoring state of the connection member is not inadvertently released when the scaffolding plate is laid on the horizontal member And the movable engagement portion is held in an unlocked state, and is engaged with the horizontal member by moving the movable engagement portion by engaging with the horizontal member of the temporary scaffold from above. A connection member for a scaffolding plate is known (for example, see Patent Document 1).

  As shown in FIG. 10, in the conventional scaffold board connecting member 100, two pin portions 130 and 135 are provided at the upper and lower positions at the rear position of the connection body 120, and An upper guide hole 150 and a lower guide hole 155 that are respectively engaged with the pin portions 130 and 135 are provided, and an upper recess 151 that is recessed toward the scaffold plate 5 is formed at the lower end of the upper guide hole 150. A lower recess 156 is formed at the lower end of the lower guide hole 155 so as to be recessed in the direction opposite to the upper recess 151. Then, as shown in FIG. 10A, the upper and lower pin portions 130 and 135 of the connection main body 120 are engaged with the upper recess 151 of the upper guide hole 150 and the lower recess 156 of the lower guide hole 155. The upper end portion 146 of the movable engagement portion 140 protrudes into the flange portion 125 of the connection main body 120, and the lower end portion 145 of the movable engagement portion 140 is not protruded toward the flange portion 125, so that the flange portion 125 is opened. It is held in the state.

  Therefore, as shown in FIG. 10B, the upper end portion 146 of the movable engagement portion 140 protruding into the flange portion 125 of the connection main body 120 is lowered by lowering the connection member 100 from above the horizontal member 3. The upper and lower pin portions 130 and 135 and the upper and lower guide holes 150 and 155 are released from the locked state by being pressed and rotated by the upper portion of the horizontal member 3. Accordingly, the movable engagement portion 140 is rotated by its own weight until the upper concave portion 151 of the upper and lower guide holes 150 and 155 is locked to the upper and lower pin portions 130 and 135, and the lower end portion 145 of the horizontal member 3 is Since it protrudes downward, it becomes possible to automatically engage the movable engagement portion 140 with the horizontal member 3.

  However, in the above-mentioned scaffold connection member, the movable engagement portion is rotated downward by its own weight when engaged with the horizontal member, so that when the scaffold plate is removed from the horizontal member, the operator can manually move it. The engaging portion must be held at a position where the engagement is released. Therefore, a plurality of workers are required for removing one scaffold board, and the work efficiency is a problem.

Japanese Utility Model Publication No. 50-44839

  This invention is made in view of the said point, Comprising: The connection member for scaffold boards which can perform the removal work of the scaffold board from a horizontal member efficiently by one operator is provided. .

  That is, the invention of claim 1 is a connecting member that protrudes from a plurality of short sides of the scaffolding plate and is attached to a horizontal member laid between two struts, the base (21), A connection body (20) having an open portion formed on the front end side of the base portion and having a flange portion (25) engaged with the upper side of the horizontal member, and the base portion of the connection body An upper pin portion (30) projecting upward, a lower pin portion (35) projecting below the base portion of the connection main body, and an arcuate plate body, the horizontal member at the lower end portion An engagement main body (41) having an engagement piece (45) engaged with the lower side of the upper body, and an upper groove hole formed in a groove shape penetrating the upper side of the engagement main body and into which the upper pin portion is inserted A portion (50), and a lower groove hole portion (55) formed in a groove shape penetrating the lower side of the engagement main body and into which the lower pin portion is inserted, The engagement body includes a movable engagement portion (40) that is slidable along each groove shape of the upper groove hole portion and the lower groove hole portion with respect to the upper pin portion and the lower pin portion, The upper groove hole includes a first upper locking portion (51) and a second upper locking portion (52) communicated to the lower rear side of the first upper locking portion via an upper sliding portion (54). And a third upper locking portion (53) communicated below the second upper locking portion, wherein the lower groove hole portion corresponds to the first upper locking portion. The second lower locking portion (57) corresponding to the upper second locking portion communicated with the portion (56) and the lower front side of the first lower locking portion via the lower sliding portion (59). And a third lower locking portion (58) corresponding to the third upper locking portion communicated below the second lower locking portion, wherein the movable engagement portion is the first upper locking portion. A locking portion, the upper pin portion, and the first lower locking portion; The engaging position where the lower pin portion is locked and engaged with the horizontal member, the second upper locking portion, the upper pin portion, the second lower locking portion, and the lower pin portion are A standby position that is respectively locked and moves the engagement main body to the engagement position when the collar portion is engaged with the horizontal member, the third upper locking portion, the upper pin portion, and the third According to the connection member for a scaffold plate, the lower locking portion and the lower pin portion are respectively locked and slid between a holding position where the opening of the flange portion is held open. .

  That is, the invention according to claim 2 is the scaffold plate connection according to claim 1, wherein the upper sliding portion of the movable engagement portion arranged at the standby position is parallel to the plate surface direction of the scaffold plate. Related to the member.

  According to the connection member for the scaffolding plate according to the invention of claim 1, a plurality of projections are provided on the short side portion of the scaffolding plate, and the connection member is attached to the horizontal member laid between the two columns, A connecting body having a base, an open portion having a lower opening formed on a distal end side of the base, and a hook portion engaged with the upper side of the horizontal member; and a protrusion protruding above the base of the connecting body An upper pin portion provided, a lower pin portion projecting below the base portion of the connection main body, and an engagement member that is formed of an arc-shaped plate and is engaged with the lower side of the horizontal member at the lower end portion. An engagement main body having a mating piece, an upper groove hole portion formed in a groove shape penetrating the upper side of the engagement main body and into which the upper pin portion is inserted, and a groove shape penetrating the lower side of the engagement main body And a lower groove hole portion into which the lower pin portion is inserted, and the engagement main body has the lower pin portion with respect to the upper pin portion and the lower pin portion. A movable engagement portion that is slidable along each groove shape of the groove hole portion and the lower groove hole portion, and the upper groove hole portion includes a first upper locking portion and a first upper locking portion. The lower groove hole portion has a second upper locking portion communicated with the lower rear via an upper sliding portion, and a third upper locking portion communicated below the second upper locking portion. The first lower locking portion corresponding to the first upper locking portion and the upper second locking portion communicated with the lower front side of the first lower locking portion via the lower sliding portion. A corresponding second lower locking portion; and a third lower locking portion corresponding to the third upper locking portion communicated below the second lower locking portion; The first upper locking portion and the upper pin portion and the first lower locking portion and the lower pin portion are respectively locked and engaged with the horizontal member, and the second upper locking portion. The locking portion and the upper pin portion and the second lower locking portion and the lower pin A standby position for moving the engagement main body to the engagement position when the hook portion is locked to the horizontal member, the third upper locking portion, the upper pin portion, and the Since the third lower locking portion and the lower pin portion are respectively locked and slid between the holding positions where the opening of the flange portion is held, not only the work of attaching the scaffold plate Also, the removal work can be performed by one worker, and the work efficiency is remarkably improved.

  According to the scaffold plate connecting member according to the invention of claim 2, in the device of claim 1, the upper sliding portion of the movable engagement portion disposed at the standby position is a plate surface direction of the scaffold plate. Since they are parallel, the locked state between the second upper locking portion and the upper pin portion is stabilized, and the occurrence of malfunction of the movable engaging portion before being attached to the horizontal member is suppressed.

It is a perspective view of the principal part of the temporary scaffold by which the scaffold board was constructed by the horizontal member between support | pillars. It is a top view of the temporary scaffold of FIG. It is a side view of the connection member for scaffolding plates concerning one embodiment of the present invention. It is a front view of a movable engagement part. It is a side view of the connection member for scaffolding plates in which a movable engagement part is a standby position. It is a side view of the connection member for scaffold boards just before engaging with a horizontal member. It is a side view of the connecting member for scaffold boards in which the movable engaging part is moving from the standby position. It is a side view of the connection member for scaffold boards which a movable engagement part is an engagement position. It is a side view of the connection member for scaffold boards which a movable engagement part is a holding position. It is a side view of the conventional connection member for scaffold boards.

  In the temporary scaffold 1 shown in FIGS. 1 and 2, two support columns 2 and 2 arranged in parallel are arranged in series at a predetermined interval, and a horizontal member 3 is attached between each of the two support columns 2 and 2. A scaffold plate 5 is installed between the two horizontal members 3 and 3. The scaffold plate 5 is formed in a rectangular shape, and a plurality (two in the illustrated example) of the scaffold plate connecting members 10 project from each short side. In FIGS. 1 and 2, reference numeral 2 a is a wedge receiver for the support column 2, and 3 a is a wedge portion provided at both ends of the horizontal member 3 and wedged to the wedge receiver 2 a of the support column 2. In addition, although illustration is abbreviate | omitted in this temporary scaffold 1, a handrail material, a bracing, etc. are suitably installed between the support | pillars 2 and 2 arrange | positioned in series.

  As shown in FIG. 3, the scaffold board connecting member 10 includes a connection main body 20, an upper pin portion 30, a lower pin portion 35, and a movable engagement portion 40. The connection main body 20 includes a base portion 21, and a flange portion 25 that is formed on the distal end side of the base portion 21 with an open portion 26 that opens downward and is engaged with the upper side of the horizontal member 3. The flange portion 25 of the connection main body 20 has a substantially inverted U shape in a side view having an arcuate inner periphery engaging portion 27 corresponding to the outer peripheral shape of the horizontal member 3, and the opening width of the opening 26 is a horizontal member. The diameter is larger than 3. In FIG. 3, reference numeral 6 denotes a connecting member mounting portion provided at the end portion on the short side of the scaffold plate 5 and to which the base portion 21 is fixed.

  As shown in FIG. 3, the upper pin portion 30 is a rod-like member protruding above the base portion 21 of the connection main body 20, and includes an upper shaft portion 31 and the upper portion provided at the tip of the upper shaft portion 31. A disk-shaped upper head 32 having a diameter larger than the diameter of the shaft portion 31. The lower pin portion 35 is a rod-like member that protrudes below the base portion 21 of the connection body 20, that is, below the upper pin portion 30, and is provided at the lower shaft portion 36 and the tip of the lower shaft portion 36. And a disc-shaped lower head 37 having a diameter larger than the diameter of the lower shaft portion 36 provided.

  3 and 4, the movable engagement portion 40 is a member disposed on the base portion 21 of the connection main body 20, and includes an engagement main body 41, an upper groove hole portion 50, and a lower groove hole portion 55. . The engagement main body 41 is made of an arc-shaped plate, and has an engagement piece 45 engaged with the lower side of the horizontal member 3 at the lower end and an upper side of the horizontal member 3 with the upper end. A contact portion 46. The engagement main body 41 has a curved inner peripheral portion 42 that is curved corresponding to the outer peripheral shape of the horizontal member 3 from the engagement piece 45 to the contact portion 46. Since the engagement main body 41 has the curved inner peripheral portion 42, the engagement main body 41 can be smoothly moved along the outer periphery of the horizontal member 3 during rotation described later.

  The upper groove hole portion 50 is a portion that is formed in a groove shape penetrating the upper side of the engagement main body 41 and into which the upper pin portion 30 is fitted. In the upper groove hole portion 50, the groove width is formed larger than the diameter of the upper shaft portion 31 of the upper pin portion 30 and smaller than the diameter of the upper head portion 32. Therefore, the upper groove portion 50 does not come off from the upper pin portion 30.

  The upper groove portion 50 is locked at a plurality of locations with the upper shaft portion 31 of the inserted upper pin portion 30. That is, the first upper locking portion 51 with the upper shaft portion 31 of the upper pin portion 30 and the second upper locking portion communicated with the lower rear side of the first upper locking portion 51 via the upper sliding portion 54. Part 52 and a third upper locking part 53 communicated below the second upper locking part 52. The upper groove hole portion 50 of the embodiment shown in FIG. 4 is a substantially inverted S-shaped groove shape when viewed from the side, and is an upper vertical hole portion in which the first upper locking portion 51 extends vertically. A slanted elongated hole portion linearly extending from the lower end portion to the lower rear side (lower right direction in the drawing) corresponds to the upper sliding portion 54 and is connected to the lower end portion of the upper sliding portion 54. The upper part (bent part) of the lower vertical hole part corresponds to the second upper locking part 52, and the lower part corresponds to the third upper locking part 53.

  The lower groove hole 55 is a part that is formed in a groove shape penetrating to the lower side of the engagement body 41, that is, the lower side of the upper groove hole 50, and into which the lower pin part 35 is fitted. In the lower groove hole portion 55, the groove width is formed larger than the diameter of the lower shaft portion 36 of the lower pin portion 35 and smaller than the diameter of the lower head portion 37. Therefore, the lower groove hole portion 55 does not come off from the lower pin portion 35.

  The lower groove portion 55 is engaged with the lower shaft portion 36 of the lower pin portion 35 inserted and inserted at a plurality of positions so as to correspond to the engagement position between the upper groove portion 50 and the upper pin portion 30. That is, the first lower locking portion 56 with the lower shaft portion 36 of the lower pin portion 35 corresponding to the first upper locking portion 51, and the lower sliding portion 59 on the lower front side of the first lower locking portion 56. A second lower locking portion 57 corresponding to the second upper locking portion 52 communicated via the second lower locking portion 57, and a third lower locking portion 53 corresponding to the third upper locking portion 53 communicated below the second lower locking portion 57. And a locking portion 58. The lower groove hole portion 55 of the embodiment shown in FIG. 4 is a substantially inverted Z-shaped groove shape when viewed from the side, and is a hole portion in which the first lower locking portion 56 protrudes upward. A curved elongated hole portion extending forward (lower left in the drawing) corresponds to the lower sliding portion 59, and lower front connected to the lower end of the lower sliding portion 59 (lower left in the drawing). The upper part (bent part) of the inclined hole part corresponds to the second lower locking part 57 and the lower part corresponds to the third lower locking part 58.

  As shown in FIGS. 5 to 9, the movable engaging portion 40 has the groove shapes of the upper groove portion 50 and the lower groove portion 55 with respect to the upper pin portion 30 and the lower pin portion 35. And is slid between the engagement position, the standby position, and the holding position. Here, the engagement position, the standby position, and the holding position will be described with reference to FIGS. 5 to 9 together with the engagement procedure of the scaffold plate connecting member 10 to the horizontal member 3.

  First, as shown in FIG. 5, in the scaffolding plate connection member 10, the movable engagement portion 40 is disposed at the standby position before being engaged with the horizontal member 3. The standby position is such that when the second upper locking portion 52 and the upper pin portion 30 and the second lower locking portion 57 and the lower pin portion 35 are locked, respectively, the hook portion 25 is engaged with the horizontal member 3. This is a position for moving the engagement main body 41 to an engagement position described later. In the movable engagement portion 40 at the standby position, the engagement piece 45 does not protrude toward the flange portion 25 side of the connection main body 20 and completely opens the release portion 26, and the contact portion 46 is the flange portion 25 of the connection main body 20. It protrudes inward from the inner periphery engaging portion 27.

  Subsequently, as shown in FIG. 6, the scaffold plate connecting member 10 is lowered together with the scaffold plate 5 from above the horizontal member 3, and the horizontal member 3 is disposed in the flange portion 25. The contact portion 46 of the engagement main body 41 protruding inward from the circumferential engagement portion 27 is in contact with the upper side of the horizontal member 3. Then, as shown in FIG. 7, when the scaffolding plate connecting member 10 is further lowered, the contact portion 46 of the engagement main body 41 is pushed up by the horizontal member 3, and the second upper locking portion 52 and the upper portion are connected. The locked state with the pin portion 30 is released, and the movable engagement portion 40 starts to rotate downward while the upper sliding portion 54 is slid with respect to the upper pin portion 30.

  Here, in the movable engaging portion 40 arranged at the standby position, as shown in the drawing, the upper sliding portion 54 is substantially parallel to the plate surface direction D of the scaffold plate 5, that is, substantially horizontal with respect to the ground. Yes. Therefore, the locked state between the second upper locking portion 52 and the upper pin portion 30 is stable, and the locking is possible with a slight vibration such as a slight shock during operation or a slight impact such as light contact with the movable engaging portion 40. It will not be released. That is, since the engagement is released when the contact portion 46 of the engagement main body 41 is reliably pushed up by the horizontal member 3, the movable engagement portion 40 is inadvertently set before being attached to the horizontal member 3. Generation | occurrence | production of malfunction, such as moving from a standby position, is suppressed. The horizontal (parallel) state of the upper sliding portion 54 includes a slight inclination state.

  When the second upper locking portion 52 and the upper pin portion 30 are unlocked, the movable engaging portion 40 is rotated downward and moved to the engaging position, as shown in FIG. This engagement position is such that the first upper locking portion 51 and the upper pin portion 30 and the first lower locking portion 56 and the lower pin portion 35 are locked, respectively, and the connection main body 20 and the movable engaging portion 40 This is the position engaged with the frame 3. At the engagement position, the engagement piece 45 of the engagement main body 41 protrudes toward the flange portion 25 so as to block a part of the opening portion 26, and the lower side of the horizontal member 3 disposed in the flange portion 25. Being attached to. Therefore, the flange portion 25 of the connection main body and the engagement piece 45 of the movable engagement portion 40 are engaged with the horizontal member 3 so as to grip the outer periphery thereof.

  In the movable engagement portion 40 at the engagement position, the first upper locking portion 51 and the upper pin portion 30 and the first lower locking portion 56 and the lower pin portion 35 are not manually rotated in the standby position direction (upward). Each engagement is not released. Therefore, the connection member 10 is securely connected to the horizontal member 3 and there is no fear of dropping off.

  Next, when the connection between the scaffold board connecting member 10 and the horizontal member 3 is released, the movable engagement portion 40 is moved from the engagement position to the holding position as shown in FIG. In this holding position, the third upper locking portion 53 and the upper pin portion 30 and the third lower locking portion 58 and the lower pin portion 35 are locked, respectively, and the opening of the opening portion 26 of the collar portion 25 is held. Position. In the movable engagement portion 40 in the holding position, the engagement piece 45 does not protrude toward the flange portion 25 side of the connection body 20 and completely opens the opening portion 26, and the contact portion 46 is the flange portion 25 of the connection body 20. It protrudes inward from the inner periphery engaging portion 27 and comes into contact with the horizontal member 3.

  When the movable engagement portion 40 is moved to the holding position, the connecting body 20 is slightly lifted with respect to the horizontal member 3 or the state in which the flange portion 25 of the connection main body 20 and the horizontal member 3 are engaged. In this state, the engagement main body 41 is rotated upward until the third upper locking portion 53 and the upper pin portion 30 and the third lower locking portion 58 and the lower pin portion 35 are locked. At this time, the contact portion 46 of the engagement main body 41 protrudes inward from the inner peripheral engagement portion 27 of the flange portion 25 and is pressed upward by the contact with the horizontal member 3. Since the stop portion 53 and the upper pin portion 30 and the third lower locking portion 58 and the lower pin portion 35 are locked, the engagement main body 41 is not rotated but is stopped. Therefore, the opening part 26 of the connection main body 20 is held with being completely opened.

  As described above, in the scaffold plate connecting member of the present invention, the movable engagement portion is automatically moved to the engagement position by the contact between the movable engagement portion arranged at the standby position and the horizontal member. Therefore, the worker can connect the scaffolding plate very easily and surely only by lowering the movable engagement portion from the upper side and engaging it with the horizontal member. In addition, when removing the scaffolding plate, the movable engaging portion is moved to the holding position, so that the opening of the buttock (opening portion) of the connection main body is held. There is no need to maintain the open state, and it is possible to perform the releasing operation of other connecting members. Therefore, not only the work of attaching the scaffolding plate but also the work of removing it can be performed by one operator, and the work efficiency is remarkably improved.

  As described above, the connection member for a scaffolding board of the present invention can efficiently attach and remove the scaffolding board by one worker. Therefore, it is promising as an alternative to the conventional scaffold plate connecting member.

DESCRIPTION OF SYMBOLS 1 Temporary scaffolding 2 Support | pillar 2a Wedge receiver 3 Horizontal member 3a Wedge member 5 Scaffold plate 6 Connection member attachment part 10 Connection member for scaffolding board 20 Connection main body 21 Base part 25 Grow part 26 Opening part 27 Inner periphery engaging part 30 Upper pin part 31 upper shaft portion 32 upper head portion 35 lower pin portion 36 lower shaft portion 37 lower head portion 40 movable engagement portion 41 engagement main body 42 curved inner peripheral portion 45 engagement piece 46 abutting portion 50 upper groove hole portion 51 first upper Locking portion 52 Second upper locking portion 53 Third upper locking portion 54 Upper sliding portion 55 Lower groove hole portion 56 First lower locking portion 57 Second lower locking portion 58 Third lower locking portion 59 Lower slide Moving part 100 Conventional connection member for scaffolding board 120 Connection body 125 Ling part 130, 135 Pin part 140 Movable engagement part 145 Lower end part 146 Upper end part 150 Upper guide hole 151 Upper recess 155 Lower guide hole 156 Lower recess D Plate surface direction

Claims (2)

A plurality of protrusions are provided on the short side of the scaffolding plate, and are connecting members that are attached to a horizontal member laid between two columns,
A connection main body (20) having a base (21) and a flange portion (25) that is formed on the distal end side of the base and has an open portion that opens downward and is engaged with the upper side of the horizontal member;
An upper pin portion (30) protruding above the base portion of the connection body;
A lower pin portion (35) protruding below the base portion of the connection body;
An engagement body (41) comprising an arcuate plate body and having an engagement piece (45) engaged with the lower side of the horizontal member at the lower end, and a groove shape penetrating through the upper side of the engagement body An upper groove hole portion (50) into which the upper pin portion is inserted and a lower groove hole portion (55) formed in a groove shape penetrating the lower side of the engagement main body and into which the lower pin portion is inserted. And a movable engagement portion (40) in which the engagement main body is slidable along the groove shapes of the upper groove hole portion and the lower groove hole portion with respect to the upper pin portion and the lower pin portion. And
The upper groove hole includes a first upper locking portion (51) and a second upper locking portion (52) communicated to the lower rear side of the first upper locking portion via an upper sliding portion (54). ), And a third upper locking portion (53) communicated below the second upper locking portion,
The lower groove hole portion communicates with a first lower locking portion (56) corresponding to the first upper locking portion via a lower sliding portion (59) in front of the lower side of the first lower locking portion. A second lower locking portion (57) corresponding to the second upper locking portion and a third lower locking corresponding to the third upper locking portion communicated below the second lower locking portion. A stop (58),
The movable engagement portion is an engagement position in which the first upper locking portion and the upper pin portion and the first lower locking portion and the lower pin portion are locked and engaged with the horizontal member, respectively. And the second upper locking portion and the upper pin portion, and the second lower locking portion and the lower pin portion are respectively locked, and the engagement main body is engaged with the horizontal member when the collar portion is engaged. And the third upper locking portion, the upper pin portion, and the third lower locking portion and the lower pin portion are respectively locked and the opening portion of the flange portion is moved to the engagement position. A connection member for a scaffold plate, wherein the connection member is slid between a holding position where the release of the scaffold is held.   The scaffold plate connection member according to claim 1, wherein the upper sliding portion of the movable engagement portion disposed at the standby position is parallel to a plate surface direction of the scaffold plate.

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