JP2009280991A - Attic scaffold supporting structure and metal fitting for supporting attic scaffold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attic scaffold supporting structure and a metal fitting for supporting an attic scaffold capable of surely preventing the scaffold from being disengaged from a ceiling-hanging bolt. <P>SOLUTION: This attic scaffold supporting structure 1 for supporting a scaffold board 7 installed in an attic includes a nut member 4 liftably screwed to the ceiling-hanging bolt 3 and the metal fitting 6 for supporting an attic scaffold which is locked to the nut member 4 and which supports a receiving member 5 on which the scaffold board 7 is placed. The metal fitting 6 for supporting an attic scaffold includes a locking section 10 having a cutout section 11 into which the ceiling-hanging bolt 3 is insertable, allowing the ceiling-hanging bolt 3 to be inserted therein by moving from the side of the ceiling-hanging bolt 3, and placed on the nut member 4; a support section 20 which is formed integrally with the locking section 10 and which supports the receiving member 5; and a fixing mechanism 30 for preventing the locking section 10 from leaving the ceiling-hanging bolt 3 by engaging with at least the ceiling-hanging bolt 3 or the nut member 4 on the opening end 11a side of the cutout section 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ceiling-back scaffolding support structure and a ceiling-backing scaffolding support bracket for supporting a scaffold provided on the ceiling back in a suspended ceiling.

  Conventionally, when repairing or reinforcing a ceiling base on a suspended ceiling, it is generally performed by placing a scaffold on the ceiling base and placing an operator on the scaffold. However, since the scaffold is directly placed on the ceiling base, a local load is applied to the ceiling base and the ceiling base may be deformed.

Therefore, in recent years, a support structure as shown in Patent Document 1 has been proposed in order to prevent deformation of the ceiling base. Such a support structure has a bolt insertion hole that opens to the side in the horizontal piece, forms an L-shaped fixing bracket having a horizontal bolt in the vertical piece, and receives a ceiling suspension bolt in the bolt insertion hole of the horizontal piece. The horizontal piece is clamped by the upper and lower intermediate insertion nuts, while the horizontal bolt of the vertical piece is inserted into the hole of the perforated angle material (frame material) and fastened by the nut to fix the frame material. The frame material is installed on a plurality of ceiling suspension bolts, and the scaffolding plate is placed perpendicular to the frame material.
JP 2006-283514 A (see FIGS. 4 and 5)

  However, in the support structure of Patent Document 1, since the fixing bracket is fixed by sandwiching the horizontal piece with the upper and lower nuts, the fixing performance depends on the tightening force of the nut. When the bolt is loosened, there is a problem that the fixing bracket may be separated from the ceiling suspension bolt.

  Then, this invention is made | formed in order to solve the said problem, and it aims at providing the ceiling back scaffold support structure and the metal fitting for ceiling back scaffold support which can prevent reliably the detachment | leave from a ceiling suspension bolt. To do.

  The invention according to claim 1 for solving the above-mentioned problem is a ceiling-backing scaffolding support structure for supporting a scaffolding plate provided on the ceiling, and a nut member screwed up and down to a ceiling suspension bolt, And a ceiling support bracket for supporting the receiving member on which the scaffold plate is placed, and the ceiling support bolt can be inserted into the ceiling suspension bolt. A locking portion that is provided with a notch and moves from a side of the ceiling suspension bolt to insert the ceiling suspension bolt and is placed on the nut member. A support portion that supports the receiving member, and a fixing mechanism that prevents the locking portion from being separated from the ceiling suspension bolt by locking at least the ceiling suspension bolt or the nut member on the opening end side of the notch portion. And configured with It is a ceiling scaffold support structure, characterized in that there.

  According to such a configuration, the fixing mechanism locks at least the ceiling suspension bolt or the nut member on the opening end side of the notch portion, so that the ceiling suspension bolt is sandwiched between the innermost portion of the notch portion and the fixing mechanism. Thus, the locking portion does not separate from the ceiling suspension bolt.

  According to a second aspect of the present invention, the fixing mechanism is positioned on the opening end side of the notch portion and below the nut member with respect to the insertion position of the ceiling suspension bolt, and the bottom surface of the nut member and the ceiling The ceiling-backing scaffolding support structure according to claim 1, further comprising a bar-like member attached to the support portion so as to be engaged with a side surface of the suspension bolt.

  According to such a configuration, the rod-shaped member is locked to the side surface of the ceiling suspension bolt, thereby restricting the movement of the locking portion to the horizontal extraction side, and the rod-shaped member is locked to the bottom surface of the nut member. By doing so, the upward movement of the locking portion in the vertical direction can be restricted.

  The invention according to claim 3 is characterized in that the fixing mechanism is folded back from the opening end side of the notch portion toward the nut member positioned on the insertion position side of the ceiling suspension bolt, and the folding portion is the The ceiling back scaffolding support structure according to claim 1, further comprising: a bolt member that presses the ceiling suspension bolt in a direction in which the nut suspension member is pressed against the outer surface of the nut member.

  According to such a configuration, since the ceiling suspension bolt and the nut member are sandwiched between the folded portion and the bolt member, the locking portion is securely fixed to the ceiling suspension bolt. Furthermore, even if the bolt member is loosened, the folded portion is locked to the outer surface of the nut member, so that the locking portion is not separated from the ceiling suspension bolt.

  The invention according to claim 4 is characterized in that the support portion is formed so as to be positioned below the locking portion, and includes a contact portion that contacts the side surface of the ceiling suspension bolt. The ceiling-backing scaffolding support structure according to any one of claims 1 to 3.

  According to such a structure, the load applied to the ceiling scaffolding support fittings such as the scaffolding plate and the receiving member can be distributed between the locking part and the contact part and transmitted to the ceiling suspension bolt. Such moment force can be reduced.

  The invention according to claim 5 is characterized in that the support portion is formed on both sides of the ceiling suspension bolt, respectively. The ceiling back scaffold according to any one of claims 1 to 4, Support structure.

  With such a configuration, the load applied to the ceiling scaffolding support fittings such as the scaffolding plate and the receiving member can be supported in a balanced manner on both sides of the locking portion, so the ceiling backing scaffolding fittings are in contact with the nut members. The stress which tries to rotate around can be offset, and the locking portion is placed on the nut member in a stable state.

  The invention according to claim 6 is a ceiling back scaffolding support bracket for supporting a scaffold plate provided on the back of the ceiling, comprising a notch portion into which the ceiling suspension bolt can be inserted, from the side of the ceiling suspension bolt. A locking part that moves and interpolates the ceiling suspension bolt and is placed on a nut that is screwed to the ceiling suspension bolt so as to be movable up and down, and the scaffold plate that is formed integrally with the locking part. The supporting portion for supporting the receiving member to be placed, and the locking portion being separated from the ceiling hanging bolt by locking at least the ceiling hanging bolt or the nut member on the opening end side of the notch portion. And a fixing mechanism for preventing the ceiling scaffolding support metal fitting.

  According to such a configuration, similarly to the invention according to claim 1, since the fixing mechanism is engaged with at least the ceiling suspension bolt or the nut member at the opening end side of the notch portion, the ceiling suspension bolt is at the end of the notch portion. It will be sandwiched between the back part and the fixing mechanism, and the locking part will not be separated from the ceiling suspension bolt.

  ADVANTAGE OF THE INVENTION According to this invention, the outstanding effect that the detachment | leave from the ceiling suspension bolt of a ceiling back scaffolding support metal fitting can be prevented reliably is exhibited.

(First embodiment)
A first best mode for carrying out a ceiling back scaffold supporting structure and a ceiling back scaffold supporting metal fitting according to the present invention will be described in detail with reference to the drawings. In each embodiment described below, the extending direction of the receiving member on which the scaffolding plate is placed and supported is the X-axis direction, and the direction orthogonal to the X-axis in the same horizontal plane is the Y-axis direction.

  FIG. 1 is a perspective view showing a first best mode for carrying out a ceiling back scaffold supporting structure and a ceiling back scaffold supporting metal fitting according to the present invention. FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view showing a ceiling-back scaffolding support metal fitting according to the first embodiment. FIG. 3 is an overall perspective view showing the ceiling back scaffold support structure and the ceiling back scaffold support fitting according to the first embodiment.

  As shown in FIG. 1, a ceiling support structure 1 according to this embodiment is a support structure for supporting a scaffold plate 2 (see FIG. 3) provided on the ceiling, and is screwed up and down on a ceiling suspension bolt 3. A combined nut member 4 and a ceiling back scaffolding support bracket 6 that is locked to the nut member 4 and supports the receiving member 5 on which the scaffolding plate 2 is placed are provided.

  As shown in FIG. 3, the ceiling suspension bolts 3 extend in the vertical direction and are arranged at predetermined intervals in the X-axis direction and the Y-axis direction, respectively. Suspended and supported. The ceiling suspension bolt 3 has a male screw 3a formed on the outer peripheral surface over its entire length, and supports a ceiling base (not shown) via a fixing bracket at the lower end thereof. The nut member 4 is provided with a female screw (not shown) on the inner peripheral surface, and is screwed into the male screw 3a (see FIG. 1) of the ceiling suspension bolt 3, and ascends and descends along the ceiling suspension bolt 3 by rotating. It is possible. The nut member 4 may be mounted in advance with a nut 4a having a general shape at the time of construction of the ceiling suspension bolt 3, or may be mounted with an open / close-type bolt intermediate part insertion nut (not shown), Moreover, you may mount | wear with the bolt intermediate part insertion nut (not shown) in which one part was notched. The receiving member 5 is configured by a C-shaped channel or a shape material such as a square pipe (C-shaped channel in the present embodiment), and has a strength capable of supporting the loading load of the scaffolding plate 2 and the operator. ing. The receiving member 5 is preferably made of an aluminum profile in consideration of weight.

  As shown in FIGS. 1 and 2, the ceiling scaffolding support metal fitting 6 includes a locking portion 10 placed on the nut member 4, a support portion 20 that supports the receiving member 5, and the ceiling suspension bolt 3. And a fixing mechanism 30 that prevents the locking portion 10 from separating. The locking part 10 and the support part 20 are integrally formed by bending a metal plate.

  The locking portion 10 includes a notch portion 11 into which the ceiling suspension bolt 3 can be inserted, and is configured to move from the side of the ceiling suspension bolt 3 and insert the ceiling suspension bolt 3 into the notch portion 11. Has been. The locking portion 10 has a rectangular shape in plan view, and has an area larger than the horizontal projection area of the nut member 4. The notch portion 11 is formed by being cut out linearly from the central portion of one side of the end portion of the locking portion 10 in the X-axis direction (the extending direction of the receiving member 5). The notch portion 11 has a width dimension substantially equal to the outer diameter of the ceiling suspension bolt 3, and the innermost portion in the notch direction (hereinafter sometimes referred to as “the innermost portion”) is the ceiling suspension bolt 3. It has a semicircular shape with the same diameter as the outer diameter. The center of the semicircle at the innermost part of the notch 11 is at a position where a pair of rectangular diagonal lines of the locking part 10 intersect, and the ceiling suspension bolt 3 is inserted at the center of gravity of the locking part 10. Has been.

  The support portion 20 is formed along the bottom surface and the side surface of the receiving member 5 and has a U-shaped cross section. The support portion 20 includes a bottom plate portion 20a and a pair of side wall portions 20b and 20c that rise from both ends in the width direction (Y-axis direction) of the bottom plate portion 20a. The side wall portion 20b located on the locking portion 10 side is configured to be bent at a right angle downward from the Y-axis direction end portion of the locking portion 10 and hang down. The side wall portion 20 b has a height dimension that is longer than the height of the receiving member 5.

  Near the lower end portion of the side wall portion 20b, a contact portion 22 that protrudes toward the ceiling suspension bolt 3 and contacts the side surface of the ceiling suspension bolt 3 is formed. The abutting portion 22 is formed so as to protrude toward the ceiling suspension bolt 3 by bending a metal plate constituting the ceiling back scaffolding support bracket 6 into a U shape. The contact part 22 is integrally formed with the side wall part 20b with the same cross section over the entire length in the X-axis direction of the side wall part 20b. In addition, the contact part 22 is not limited to what is formed by a bending process, It fixes so that the rod-shaped separate member which has predetermined intensity | strength may be fixed to the ceiling suspension bolt 3 side surface of the side wall part 20b. Also good. In this case, the contact portion may be provided over the entire length in the X-axis direction of the side wall portion 20b, or may be provided locally at a position corresponding to the ceiling suspension bolt 3.

  The bottom plate portion 20a is horizontally formed by bending at a right angle from the lower end portion of the side wall portion 20b toward the side opposite to the ceiling suspension bolt 3. The bottom plate portion 20a has a width dimension equivalent to the width of the receiving member 5 and is formed in a flat plate shape, and the receiving member 5 is placed on the upper surface thereof.

  The side wall part 20c located on the opposite side to the locking part 10 is bent perpendicularly upward from the end in the Y-axis direction of the bottom plate part 20a and rises vertically. The side wall part 20 c is arranged with a distance equal to the width of the receiving member 5 from the opposing side wall part 20 b. The side wall part 20 c has a height dimension (equivalent to the side wall part 20 b) that is longer than the height of the receiving member 5, and its upper end part is located at the same height as the locking part 10.

  According to the support portion 20 having such a configuration, the receiving member 5 is placed on the bottom plate portion 20a, and its own weight and load are supported by the bottom plate portion 20a, and the side wall portions 20b and 20c from both sides in the width direction. The movement in the width direction is regulated by being sandwiched.

  The fixing mechanism 30 is configured to prevent the locking portion 10 from separating from the ceiling hanging bolt 3 by locking at least the ceiling hanging bolt 3 or the nut member 4 on the opening end 11a side of the notch portion 11. ing. Specifically, the fixing mechanism 30 is positioned below the nut member 4 on the opening end 11a side of the notch portion 11 with respect to the insertion position of the ceiling suspension bolt 3 (the center of gravity position of the locking portion 10). 4, and a bolt (rod-like member) 31 attached to the support portion 20 so as to be engaged with the bottom surface 4 b and the side surface 3 b of the ceiling suspension bolt 3.

  The bolts 31 are arranged along the Y-axis direction, and are inserted into bolt insertion holes 21 and 21 formed in the side wall portions 20b and 20c of the support portion 20, respectively. A hanging portion 32 that hangs downward is formed at an end of the locking portion 10 opposite to the support portion 20 in the Y-axis direction, and a bolt hole into which the bolt 31 is screwed is formed in the hanging portion 32. 33 is formed. The bolt hole 33 and the bolt insertion holes 21 and 21 of the support portion 20 are linearly arranged along the Y-axis direction. A thick portion 33a is formed in the bolt hole 33, and the length of a female screw (not shown) formed inside is increased to increase the tightening force of the bolt 31.

  In the present embodiment, the bolt hole 33 is formed in the hanging portion 32, but the position where the bolt hole 33 is formed is not limited to this, and any one of the side wall portions 20b and 20c of the support portion 20, Or you may form a bolt hole in both. If it does in this way, it will not be necessary to form the drooping part 32 by setting it as the structure which extends the bolt 31 by cantilever from the side wall part 20b.

  Moreover, in this embodiment, although the volt | bolt 31 is comprised so that it may latch on the bottom face 4b of the nut member 4, and the side surface 3b of the ceiling suspension bolt 3, the range from which the latching | locking part 10 does not leave | separate from the ceiling suspension bolt 3. If so, the bolt 31 may be arranged with a slight gap from either or both of the bottom surface 4 b of the nut member 4 and the side surface 3 b of the ceiling suspension bolt 3.

  Furthermore, in this embodiment, the insertion direction of the bolt 31 is set along the Y axis. However, if the locking portion 10 is not separated from the ceiling suspension bolt 3, the bolt 31 is arranged so as to be inclined from the Y axis. May be.

  Next, the operation and effect will be described together with the assembling process of the ceiling back scaffold supporting structure 1 and the ceiling scaffold supporting metal fitting 6 configured as described above.

  To repair or reinforce the ceiling under the ceiling, first, the nut member 4 previously attached to the ceiling suspension bolt 3 or the bolt intermediate part insertion nut (not shown) attached at the time of work is rotated. To a predetermined height. Thereafter, the ceiling back scaffolding support metal fitting 6 is moved from the side of the ceiling suspension bolt 3 so that the ceiling suspension bolt 3 is inserted into the notch portion 11 of the engagement portion 10, and the engagement portion 10 is placed on the nut member 4. Placed on. At this time, the ceiling scaffolding support metal fitting 6 is placed in a stable state because the ceiling suspension bolt 3 is located at the center of gravity of the locking portion 10, and is positioned and installed at a predetermined height. Become.

  Thereafter, the bolt 31 as the fixing mechanism 30 is inserted from the bolt insertion holes 21 and 21 formed in the side wall portions 20 b and 20 c of the support portion 20, and the tip portion is screwed into the bolt hole 33 of the hanging portion 32. . At this time, the ceiling suspension bolt 3 is surrounded by the notch 11 and the bolt 31 when viewed in the horizontal direction, and the nut member 4 is sandwiched between the locking portion 10 and the bolt 31 when viewed in the vertical direction. Thereby, the ceiling back scaffolding support metal 6 is fixed in the horizontal direction and the vertical direction. That is, the bolt 31 can restrict the movement of the locking portion 10 in the horizontal direction and the movement of the locking portion 10 in the vertical direction. 6 does not separate from the ceiling suspension bolt 3. Further, according to such a configuration, even if the nut member 4 rotates, the ceiling suspension bolt 3 is surrounded by the notch portion 11 and the bolt 31, so that the locking portion 10 is secured to the ceiling suspension bolt 3. Never leave.

  As shown in FIG. 3, the ceiling scaffolding support metal fitting 6 is provided on each of a plurality of ceiling suspension bolts 3, 3,... That are positioned at predetermined intervals in the X-axis direction and the Y-axis direction. The receiving member 5 is bridged and supported between the ceiling and scaffolding support brackets 6 and 6 that are spaced apart in the X-axis direction. The receiving member 5 is installed so as to be inserted from the side of the support portion 20 in the X-axis direction into a space surrounded by the bottom plate portion 20a, the side wall portions 20b and 20c, and the bolts 31. Note that the receiving member 5 may be placed from above the support portion 20 before the bolts 31 are attached. Since the upper side of the receiving member 5 supported by the support portion 20 is locked by the bolt 31, the receiving member 5 can be prevented from being lifted.

  A plurality of receiving members 5 are arranged at predetermined intervals in the Y-axis direction, and the scaffolding plate 2 is bridged and placed between these receiving members 5 and 5. As a result, a ceiling scaffold is formed, and the work can be performed without applying a load to the ceiling foundation.

  Further, according to the ceiling scaffolding support bracket 6, even if the operator is still on the scaffolding plate 2, the spanner is inserted into the lower portion of the locking portion 10 from the side in the X-axis direction, and the nut By rotating the member 4, it is possible to finely adjust the height. In order to insert the spanner, it is sufficient to widen the engaging portion of the ceiling back scaffolding support metal so as to secure a space around the nut member 4. Furthermore, if a bolt hole is formed in either or both of the side wall portions 20b and 20c of the support portion 20, the bolt 31 is cantilevered from the side wall portion 20b, and the hanging portion 32 is eliminated. The spanner can be inserted from the opened side (Y-axis direction side), and the nut member 4 can be easily rotated, and the height can be easily finely adjusted.

  In addition, the contact portion 22 that contacts the side surface of the ceiling suspension bolt 3 is formed on the support portion 20, so that the loading load applied to the ceiling scaffolding support bracket 6 such as the scaffold plate 2 and the receiving member 5 can be locked. The part 10 and the contact part 22 can be dispersed and transmitted to the ceiling suspension bolt 3. As a result, the moment force applied to the locking portion 10 can be reduced, and the locking portion 10 can be prevented from tilting and rising. Furthermore, since the stress concerning the latching | locking part 10 can be reduced, the board thickness of the ceiling back scaffolding support metal fitting 6 can be made thin, and weight reduction can be achieved.

(Second embodiment)
Next, a second best mode for carrying out the ceiling back scaffold supporting structure and the ceiling back scaffold supporting metal fitting according to the present invention will be described in detail with reference to the drawings.

  FIG. 4 is a perspective view showing a second best mode for carrying out the ceiling back scaffold supporting structure and the ceiling back scaffold supporting metal fitting according to the present invention. FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view showing a ceiling-back scaffolding support metal fitting according to the second embodiment.

  As shown in FIG. 4, in the ceiling underfloor scaffold support structure 101 of this embodiment, the ceiling underfloor scaffold support fitting 106 that supports the receiving member 5 is placed on the nut member 4 screwed into the ceiling suspension bolt 3. However, the structure of the ceiling / backing scaffolding support metal 106 is different from that of the first embodiment.

  As shown in FIGS. 4 and 5, the ceiling scaffolding support metal fitting 106 includes a locking portion 110 placed on the nut member 4, a support portion 120 that supports the receiving member 5, and the ceiling suspension bolt 3. And a fixing mechanism 130 that prevents the locking portion 10 from separating. The ceiling scaffold support metal fitting 106 of the present embodiment is greatly different from the first embodiment in the fixing mechanism 130. The locking part 110 and the support part 120 are integrally formed by bending a metal plate.

  The locking part 110 is different from the first embodiment in the notch direction of the notch part 111 into which the ceiling suspension bolt 3 can be inserted. The notch 111 is a straight line extending along the Y-axis direction from the center of one side of the end opposite to the support 120 in the Y-axis direction (width direction of the receiving member 5) end of the locking part 110. It is cut into a shape. The notch portion 111 has a width dimension equivalent to the outer diameter of the ceiling suspension bolt 3, and the innermost part in the notch direction has a semicircular shape having the same diameter as the outer diameter of the ceiling suspension bolt 3. Yes. The center of the semicircle at the innermost part of the notch 111 is configured to be the position of the center of gravity of the locking part 110.

  The support portion 120 is formed along the bottom surface and the side surface of the receiving member 5 and has a U-shaped cross section. As in the first embodiment, the support portion 120 includes a bottom plate portion 20a and a pair of side wall portions 20b and 20c. In this embodiment, the bolt hole 33 is formed in the side wall part 20b near the locking part 110, and the bolt insertion hole 21 is formed in the other side wall part 20c. The bolt hole 33 and the bolt insertion hole 21 are formed in the intermediate portion in the X-axis direction of the side wall portions 20b and 20c, are arranged in a straight line along the Y-axis direction, and the ceiling suspension bolt 3 is positioned on the extension line. It is configured. The upper ends of the bolt holes 33 and the bolt insertion holes 21 are formed at a height equivalent to the bottom surface 4 b of the nut member 4. In addition, since the other structure of the support part 120 is the same as that of 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The fixing mechanism 130 has a folded portion 134 that is folded back toward the nut member 4 from the opening end 111a side of the notch portion 111, and a ceiling suspended in a direction in which the folded portion 134 is pressed against the outer surface 4c of the nut member 4 and locked. A bolt 31 (bolt member) that presses the bolt 3 is provided.

  The folded portion 134 is formed at both ends in the width direction (X-axis direction) of the notch portion 111 at the Y-axis direction end portion of the locking portion 110. The tip of the folded portion 134 is formed to be inclined corresponding to the shape of the outer side surface 4 c of the nut member 4, and is configured to contact the outer side surface 4 c of the nut member 4.

  The bolt 31 is inserted into the bolt insertion hole 21 of the support portion 120 and is screwed into the bolt hole 33. By rotating, the tip of the bolt 31 presses the side surface 3 b of the ceiling suspension bolt 3. ing. Further, the upper end of the inserted bolt 31 is locked to the bottom surface of the nut member 4.

  According to such a fixing mechanism 130, by tightening the bolt 31 and pressing the side surface 3 b of the ceiling suspension bolt 3, the entire ceiling back scaffolding support fitting 106 including the locking portion 110 is moved to the support portion 120 side. The folded portion 134 formed integrally with the locking portion 110 is pressed against the outer side surface 4 c of the nut member 4. As a result, the nut member 4 is clamped, and the ceiling / backing scaffolding support metal fitting 106 is securely fixed to the ceiling suspension bolt 3 without vibration, and the ceiling / backing scaffolding support metal fitting 106 is separated from the ceiling suspension bolt 3. There is nothing.

  Further, the tip of the folded portion 134 is formed to be inclined corresponding to the shape of the outer side surface 4c of the nut member 4, and comes into contact with the outer side surface 4c of the nut member 4, so that the nut member 4 rotates. Never do.

  Moreover, since the front-end | tip of the volt | bolt 31 will also latch on the bottom face (not shown) of the nut member 4, the movement to the upper direction of a perpendicular direction can be controlled. Furthermore, since the bolt 31 is located in the upper part of the receiving member 5, the receiving member 5 can be prevented from being lifted.

(Third embodiment)
The third best mode for carrying out the ceiling scaffold support structure and the ceiling scaffold support fitting according to the present invention will be described in detail with reference to the drawings.

  FIG. 6 is a perspective view showing a third best mode for carrying out the ceiling back scaffolding support structure and ceiling back scaffolding support fitting according to the present invention. FIG. 7A is a plan view, FIG. 7B is a front view, and FIG. 7C is a side view showing a ceiling-back scaffolding support metal fitting according to the third embodiment.

  As shown in FIG. 6, the ceiling underfloor scaffold support structure 201 of this embodiment is configured such that the ceiling underfloor scaffold support fitting 206 that supports the receiving member 5 is placed on the nut member 4 screwed into the ceiling suspension bolt 3. However, the structure of the ceiling back scaffolding support metal fitting 206 is different from that of the first embodiment.

  As shown in FIGS. 6 and 7, the ceiling scaffolding support metal fitting 206 includes a locking portion 210 placed on the nut member 4, a support portion 220 that supports the receiving member 5, and the ceiling suspension bolt 3. And a fixing mechanism 230 that prevents the locking portion 10 from separating. The ceiling scaffold support metal fitting 206 of the present embodiment is similar to the first embodiment, and is different from the first embodiment in that the support portions 220 are formed on both sides with the ceiling suspension bolt 3 interposed therebetween. ing. In addition, since the structure of the latching | locking part 210 is the structure similar to 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The support part 220 is formed on both sides in the Y-axis direction with the locking part 210 interposed therebetween. In FIG. 6, the 1st support part 220a located in the right side is the structure similar to the support part 20 (refer FIG. 1) of 1st embodiment. In FIG. 6, the second support portion 220 b located on the left side is configured by extending the hanging portion 32 (see FIG. 1) of the first embodiment. Specifically, the second support portion 220b is formed in a line symmetrical shape with respect to the first support portion 220a with the ceiling suspension bolt 3 as the center, and includes a bottom plate portion 20a and side wall portions 20b and 20c. . A contact portion 22 that contacts the ceiling suspension bolt 3 is formed on the side wall portion 20b. Further, a bolt hole 33 is formed in the side wall portion 20b, and a bolt insertion hole 21 is formed in the side wall portion 20c. The bolt insertion holes 21 and 21 of the first support portion 220a and the bolt holes 33 and the bolt insertion holes 21 of the second support portion 220b are arranged linearly along the Y-axis direction. The formation position of the bolt hole 33 is not limited to the side wall part 20b of the second support part 220b, and any of the side wall part 20c of the second support part 220b and the side wall parts 20b and 20c of the first support part 220a. It may be.

  As in the first embodiment, the fixing mechanism 230 is engaged with at least the ceiling suspension bolt 3 or the nut member 4 on the opening end 11a side of the notch portion 11, so that the engagement portion 210 is separated from the ceiling suspension bolt 3. It is configured to prevent this. Specifically, the fixing mechanism 230 is positioned below the nut member 4 on the opening end 11a side of the notch 11 with respect to the insertion position of the ceiling suspension bolt 3, and the bottom surface 4b of the nut member 4 and the ceiling suspension bolt 3. It is provided with the bolt 31 attached to the support part 220 so that it may latch on the side surface 3b. The bolt 31 includes a bolt insertion hole 21 in the side wall portion 20b of the first support portion 220a, a bolt hole 33 in the side wall portion 20b of the second support portion 220b, a bolt hole 33 in the side wall portion 20c of the first support portion 220a, The two support portions 220b have such a length that they can be inserted into the bolt insertion holes 21 of the side wall portion 20c.

  According to such a configuration, the receiving member 5 can be supported in a well-balanced manner on both sides in the Y-axis direction of the locking portion 210 in addition to the same effects as the first embodiment. The effect that the metal fitting 206 can be prevented from rotating around the contact point of the nut member 4 can be obtained. Also in this embodiment, the contact part 22 can distribute the load received by the support part 220 and transmit it to the ceiling suspension bolt 3, so that the load and moment force applied to the locking part 210 can be reduced. As a result, the thickness of the ceiling back scaffolding support metal fitting 206 can be reduced, and the weight can be reduced.

(Fourth embodiment)
A fourth best embodiment for carrying out a ceiling back scaffold supporting structure and a ceiling back scaffold supporting bracket according to the present invention will be described in detail with reference to the drawings.

  FIGS. 8A and 8B are perspective views showing a fourth best mode for carrying out the ceiling scaffolding support structure and the ceiling scaffolding supporting bracket according to the present invention. FIG. 9A is a plan view, FIG. 9B is a front view, and FIG. 9C is a side view illustrating a ceiling-back scaffolding support metal fitting according to the fourth embodiment.

  As shown in FIG. 8, the ceiling scaffolding support structure 301 of this embodiment supports a pair of receiving members 5 on both sides so that the ceiling suspension bolt 3 is sandwiched between the nut member 4 screwed to the ceiling suspension bolt 3. The structure for placing and supporting the ceiling / backing scaffolding support metal fitting 306 is the same as that of the third embodiment, but the structure of the ceiling / backing scaffolding support metal fitting 306 is different from that of the third embodiment.

  As shown in FIGS. 8 and 9, the ceiling scaffolding support metal fitting 306 includes a locking portion 310 placed on the nut member 4, a support portion 320 that supports the receiving member 5, and the ceiling suspension bolt 3. And a fixing mechanism 330 that prevents the locking portion 310 from separating. In the ceiling scaffolding support metal fitting 306 of the present embodiment, the support portions 320 are formed on both sides of the ceiling suspension bolt 3.

  The locking part 310 is formed with a notch 311 extending in the X-axis direction. Folded portions 334 that are folded back toward the nut member 4 are formed at both lower portions in the width direction (Y-axis direction) of the cutout portion 311 on the opening end 311 a side of the cutout portion 311. The folded part 334 is formed in the same shape as the folded part 134 of the second embodiment.

  A hanging portion 331 is formed at the end of the locking portion 310 opposite to the opening end 311a of the notch 311 in the X-axis direction. A bolt hole 333 is formed in the hanging portion 331. The bolt hole 333 is screwed with a bolt 31 (bolt member) that presses the ceiling suspension bolt 3 in a direction in which the folded portion 334 is pressed against the outer surface 4c of the nut member 4 and locked. .

  The fixing mechanism 330 according to the present embodiment is configured to include a folded portion 334 and a bolt 31 and has a fixing structure similar to that of the second embodiment.

  The support part 320 is formed on both sides in the Y-axis direction with the locking part 310 interposed therebetween. Each support part 320,320 is comprised in the shape which remove | eliminated the bolt insertion hole and the bolt hole from the support part 220 (refer FIG. 6) of 3rd embodiment, and it is axisymmetric about the ceiling suspension bolt 3 mutually. It is formed into a shape. The support part 320 includes a bottom plate part 20a and side wall parts 20b, 20c, respectively, and a contact part 22 that contacts the ceiling suspension bolt 3 is formed on the side wall part 20b on the locking part 310 side.

  According to such a configuration, the receiving member 5 can be supported with good balance on both sides in the Y-axis direction of the locking portion 310 in addition to the same effects as the second embodiment. The effect that the metal fitting 306 can be prevented from rotating around the contact point with the nut member 4 can be obtained.

  In the present embodiment, a member for pressing the upper portion of the receiving member 5 is not provided, but a bolt or the like may be separately arranged.

  As mentioned above, although the form for implementing this invention was each demonstrated, this invention is not limited to each said embodiment, In the range which does not deviate from the meaning of this invention, design change, such as a material, a shape, and a size, is carried out suitably. Is possible. For example, in the first embodiment, the rod-shaped member that is positioned below the nut member 4 and is engaged with the bottom surface 4b of the nut member 4 and the side surface 3b of the ceiling suspension bolt 3 is configured by the bolt 31. However, the present invention is not limited to this, and other rod-like members such as pins and rods may be used as long as the side wall portions 20b and 20c of the support portion 20 and the hanging portion 32 have a detachable configuration.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is the perspective view which showed the 1st best form for implementing the ceiling back scaffold support structure and metal fitting for a ceiling back scaffold which concern on this invention. FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 3C is a side view showing a ceiling-back scaffolding support metal fitting according to the first embodiment. It is the whole perspective view which showed the ceiling back scaffold support structure and metal fitting for ceiling back scaffold support concerning a first embodiment. It is the perspective view which showed the 2nd best form for implementing the ceiling back scaffold support structure and metal fitting for a ceiling back scaffold which concern on this invention. FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view showing a ceiling back scaffolding support metal fitting according to a second embodiment. It is the perspective view which showed the 3rd best form for implementing the ceiling back scaffold support structure and metal fitting for ceiling back scaffold support which concern on this invention. FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view illustrating a ceiling-back scaffolding support metal fitting according to a third embodiment. (A) And (b) is the perspective view which showed the 4th best form for implementing the ceiling back scaffold support structure and ceiling back scaffold support metal fitting which concern on this invention. FIG. 6A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view showing a ceiling-back scaffolding support metal fitting according to a fourth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling back scaffold support structure 2 Scaffold plate 3 Ceiling suspension bolt 4 Nut member 5 Receiving member 6 Ceiling back scaffold support metal fitting 10 Locking part 11 Notch part 11a (of notch part) Open end 20 Support part 22 Contact part 30 Fixing Mechanism 31 Bolt (Bar-shaped member, Bolt member)
DESCRIPTION OF SYMBOLS 101 Ceiling back scaffold support structure 106 Ceiling back scaffold support metal fitting 110 Locking part 111 Notch part 111a (Opening end) (support part) 120 Support part 130 Fixing mechanism 134 Folding part 201 Ceiling back scaffolding support structure 206 Ceiling back scaffolding support metal fitting 210 Locking part 220 Supporting part 230 Fixing mechanism 301 Ceiling back scaffolding support structure 306 Ceiling back scaffolding support metal fitting 310 Locking part 311 Notch part 311a Open end 320 (of notch part) 320 Supporting part 330 Fixing mechanism 334 Folding part

Claims (6)

A ceiling support structure for supporting a scaffolding plate provided on the ceiling,
A nut member screwed up and down to the ceiling suspension bolt,
It is provided with a ceiling scaffolding support bracket that is locked to the nut member and supports the receiving member on which the scaffold plate is placed,
The ceiling scaffolding support metal fitting has a cutout portion into which the ceiling suspension bolt can be inserted, and moves from a side of the ceiling suspension bolt to insert the ceiling suspension bolt and is placed on the nut member. A locking portion formed integrally with the locking portion and supporting the receiving member, and locking at least the ceiling suspension bolt or the nut member on the opening end side of the notch portion. A ceiling support structure, comprising: a fixing mechanism that prevents the locking portion from separating from a ceiling suspension bolt. The fixing mechanism is positioned on the opening end side of the notch portion with respect to the insertion position of the ceiling suspension bolt and below the nut member and engages with the bottom surface of the nut member and the side surface of the ceiling suspension bolt. The ceiling-backing scaffolding support structure according to claim 1, further comprising: a bar-like member attached to the support portion. The fixing mechanism includes a folded portion that is folded back from the opening end side of the notch portion toward the nut member positioned on the insertion position side of the ceiling suspension bolt, and the folded portion is pressed against the outer surface of the nut member. The ceiling-backing scaffolding support structure according to claim 1, further comprising: a bolt member that presses the ceiling suspension bolt in a direction to be locked. The said support part is formed so that it may be located below the said latching | locking part, and is provided with the contact part contact | abutted to the side surface of the said ceiling suspension bolt. The ceiling underfloor scaffold support structure according to any one of the above. The said support part is formed in the both sides on both sides of the said ceiling suspension bolt, The ceiling back scaffold support structure of any one of the Claims 1 thru | or 4 characterized by the above-mentioned. A ceiling support bracket for supporting a scaffold plate provided on the back of the ceiling,
A notch portion into which the ceiling suspension bolt can be inserted is mounted on a nut that moves from a side of the ceiling suspension bolt to insert the ceiling suspension bolt and is screwed up and down to the ceiling suspension bolt. A locking portion;
A support portion that is integrally formed with the locking portion and supports a receiving member on which the scaffold plate is placed;
A fixing mechanism that prevents the locking portion from separating from the ceiling suspension bolt by locking at least the ceiling suspension bolt or the nut member on the opening end side of the notch portion. Brackets for supporting the ceiling and scaffolding.

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