JP5751551B2 - Indentation prevention structure - Google Patents

Description

  The present invention relates to a dent prevention structure. More specifically, the present invention relates to a structure for preventing a horizontal material (base, beam, etc.) and a vertical material (column, etc.) from being caught in a wooden building.

  Conventionally, when installing horizontal members such as foundations and vertical members such as pillars, it is possible to cope with low costs and when changing the cross-sectional area of the member used, mortise processing or using joint hardware In addition, there is known a structure for preventing stagnation of wood that can effectively prevent staking of a butt portion where timbers are butted against each other at right angles (for example, see Patent Document 1).

  Specifically, in the abutting portion where the timbers are abutted at right angles, the dent is a dent prevention structure for preventing the dent of the timber pressed from one of the timbers to be abutted. Screws are screwed, screws of the same kind are screwed in a straight line so as to face the screws, and the end surface of the screw head of the butting surface is screwed. It is located on the same plane as the butt face of wood, and the screw (wood screw) is driven partially without penetrating the horizontal member, so the force is transmitted using the wood screw blade part. is there. If it does in this way, it will be possible to receive the load concerning a timber with the screws which oppose each other, disperse | distribute a load to the center of the screwed timber, and can prevent the stagnation of a timber.

JP 2009-156014 A

  The technology described in Patent Document 1 ultimately transmits a load in a direction (fiber orthogonal direction) orthogonal to the direction (fiber direction) in which the fibers of the horizontal member (wood) extend, It is a structure that is directly affected by the performance of the horizontal member in the direction perpendicular to the fibers.

  That is, the rigidity and strength of the horizontal member (wood) in the direction perpendicular to the fiber are usually extremely small compared to the fiber direction, and there is a risk of creep deformation with respect to a load acting for a long period of time.

  Therefore, the inventors transmit the load in the direction perpendicular to the fiber by transmitting the load through a rigid member such as a screw that penetrates the horizontal member at the connecting portion between the horizontal member and the vertical member. It was conceived that it can be directly transmitted to other parts such as the foundation without being transmitted to the material, and the present invention has been made.

  The present invention uses a rigid member such as a screw penetrating the horizontal member to load with high rigidity in the orthogonal direction of the fiber without relying on the rigidity and strength of the horizontal member (wood) in the orthogonal direction of the fiber. An object of the present invention is to provide a structure for preventing stagnation that can be transmitted.

The invention according to claim 1 is a portion that receives a load of the horizontal member, and embeds a rigid member in a direction perpendicular to the fiber perpendicular to the fiber direction of the horizontal member, and the load is applied to the rigid member in the direction perpendicular to the fiber. and configured to transmit, a prevention structure sinking, the rigid member is provided through the horizontal member, it is transmitted to the lower side of the foundation of the horizontal member under a load of the fiber perpendicular direction A dent prevention plate provided along the surface of the horizontal member to receive the load in the fiber orthogonal direction, and a first shaft-like member provided corresponding to the dent prevention plate and extending in the fiber orthogonal direction. A vertical member extending in a direction orthogonal to the horizontal member, and a long screw member extending in parallel with the vertical member along with the vertical member. The long screw portion End penetrates the sinking prevention plate, the long screw member is characterized by being fixed to the baffle plate sinking the at nut in contact with prevention plate the sinking. Here, the “fiber direction” refers to the direction in which the fibers of the horizontal member (wood) extend. The “rigid member” only needs to have rigidity that can withstand the load in the direction perpendicular to the fibers.

If it does in this way, the load of the horizontal direction of a horizontal member will be transmitted to a lower foundation through a rigid member, without making the horizontal member bear. For example, as shown in FIG. 1, the rigid member is composed only of the first shaft-like member 12 (wood screw as the screw rod member 12a), and the fiber orthogonal direction perpendicular to the fiber direction X (longitudinal direction) of the horizontal member 11 The load F acting on Z is received by the shaft-like member 12, and the horizontal member 11 is not burdened. Thereby, in the site | part which receives the load F, the penetration in the fiber orthogonal direction Z of the horizontal member 11 by the load F is prevented.

  As the first shaft-like member constituting the rigid member (the same applies to the second shaft-like member described later), in addition to the above-described screw rod members such as wood screws, long screws, anchor bolts, and tapping screws, the axial direction As long as it has the above-mentioned rigidity, it may have no screw. The rigid member includes a combination of a screw rod member 12a (anchor bolt) and a nut 12b as shown in FIG. 2, for example. The nut 12b is embedded in the portion that has been drilled. Furthermore, the anti-slip plate 12c may be combined (see, for example, FIGS. 3 to 6). The rigid rod as a whole has a length penetrating the horizontal member 11 in combination with the screw rod member 12a alone or in combination with the nut 12b and the anti-slip plate 12c.

Further, by interposing the sinking prevention plate, the action position of the load of the horizontal member perpendicular direction even if not directly above the first shaft-shaped member, the load via the first shaft-shaped member, the lower Can communicate to the side foundation . That is, for example, as shown in FIGS. 3 to 6, if a load in the vertical direction is applied to any position on the anti-indentation plate, the screw rod member 12 a (first 1 shaft-like member) and is transmitted to the fabric base 13 which is the other party that finally transmits the load. Therefore, compared with the case where the load is received only by the screw rod member 12a, the use range of the load that can be transmitted by the screw rod member 12a can be greatly expanded by using the anti-slip plate 12c.

Further, by providing the screw rod member 12a (first shaft-like member) , for example, as shown in FIGS. 7A to 7C, the anti-indentation plate 12c is prevented from being indented. If not provided, for example, as shown in FIG. 7 (d), the dent prevention plate 12 c is supported only by the resistance force of the horizontal member 11 in the direction perpendicular to the fibers. In the case of the horizontal member 11 made of wood, since the rigidity in the fiber orthogonal direction is small, the anti-sink plate 12c is embedded in the fiber orthogonal direction Z.

According to a second aspect of the present invention, it is desirable that the dent prevention plate is embedded in the horizontal member so as to be flush with the surface of the horizontal member.

  If it does in this way, the protrusion part from a horizontal member will be lost, and the freedom degree of design will become high.

According to a third aspect of the present invention, the first shaft-shaped member is a screw rod member, and the anti-skid plate has a through hole, and a nut member is fixed corresponding to the through hole. Preferably, the screw rod member is screwed into the nut member and extends through the anti-slip plate.

  If it does in this way, since the screw rod member is screwed into the nut member and extends through the anti-locking plate, the screw rod member and the anti-lock plate are integrated, and the mounting is stabilized. In other words, for example, as shown in FIGS. 3 and 4, the screw rod member 12a does not penetrate the anti-indentation plate, and the anti-indentation plate 12c is supported only by placing the anti-indentation plate 12c on the nut 12b. It becomes unstable. Therefore, for example, as shown in FIGS. 5 and 6, it is desirable that the screw rod member 12 a is integrated through the indentation preventing plate 12 c.

  Here, the anti-skin plate 12c and the nut member 12b are integrated by using fixing means such as welding and adhesion, but the nut member can be omitted by providing a screw hole on the anti-skin plate. is there.

In this case, as described in claim 4 , the first shaft-shaped member is a screw rod member, the anti-skid plate has a screw hole, and the screw rod member is formed in the screw hole. What is necessary is just to make it extend so that it may be screwed in and may penetrate the said dent prevention board.

Further, as described in claim 5, the tenon or dowel before Symbol vertical material, a structure in which the is fitted to the mortise or dowel holes of horizontal member through the through hole of the baffle plate the embedment Can do. Here, the “tenon or dowel” can be made of steel, resin, or wood.

  In this way, it is possible to apply the indentation prevention structure to the tenon or dowel joint.

As described in claim 6 , in the connecting portion between the horizontal member and the vertical member, the end of the bracing material is connected via the brace end hardware, and the long screw member together with the brace end hardware It is also possible to adopt a structure that is connected to a dent prevention plate.

  If it does in this way, the edge part of a bracing material can be supported by the bracing edge part hardware supported with a long screw member.

As described in claim 7 , in the connecting portion between the horizontal member and the vertical member, the side provided on the long screw member is opposite to the vertical member and corresponds to the anti-slip plate. And it can also be set as the structure where the said 1st shaft-shaped member is provided in the said horizontal member.

  If it does in this way, while the anti-skid plate is supported by the long screw member, the load from the brace can be received by the first shaft-like member via the brace end hardware and the anti-skin plate. .

As according to claim 8, wherein the portion where the first shaft-shaped member is provided, wherein the vertical member extending in a direction perpendicular to the horizontal member is provided on said vertical member, said first axis The second shaft-shaped member is embedded in the longitudinal direction of the vertical member, and the end portions of the first shaft-shaped member and the second shaft-shaped member are in contact with each other. Is also possible. Here, “the end portions of the first shaft-shaped member and the second shaft-shaped member are in contact” means that the end portions of the first shaft-shaped member and the second shaft-shaped member are loaded. It means that they are in contact so that they can be handed over.

  In this way, the load from the second shaft member can be directly received by the first shaft member.

As defined in claim 9 , a vertical member extending in a direction orthogonal to the horizontal member is provided at a portion where the first shaft-like member is provided, and the vertical member is provided with the first member. Corresponding to the shaft-shaped member, a second shaft-shaped member is embedded, and a squeezing prevention plate is positioned between the end portions of the first shaft-shaped member and the second shaft-shaped member. It is also possible.

  If it does in this way, the load which acts on a perpendicular | vertical material will be directly transmitted to a 1st shaft-shaped member via a dent prevention board from a 2nd shaft-shaped member.

According to a tenth aspect of the present invention, the first shaft-like member penetrates the horizontal member, and a portion protruding through the first member is embedded in a vertical member extending in a direction perpendicular to the horizontal member. It is also possible to have a structure in contact with the end portion of the first shaft-like member provided on another horizontal member that contacts the horizontal member.

  If it does in this way, transmission of a load will be performed between the 1st shaft-like members, without passing through a horizontal member.

  The present invention, as described above, by using a rigid member, the load in the fiber orthogonal direction of the horizontal member (wood), without relying entirely on the rigidity and strength of the horizontal member itself in the fiber orthogonal direction, Since it is transmitted to the other part, even in the state where the horizontal member is interposed, it is possible to transmit the load with high rigidity in the direction perpendicular to the fiber of the horizontal member and to reduce long-term creep deformation.

(A) and (b) are the top views and side views explaining the principle which prevents dent by the dent prevention structure based on this invention, respectively. (A) and (b) are the top views and side views explaining the principle which prevents dent by the dent prevention structure based on this invention, respectively. (A) and (b) are the top views and side views explaining the principle which prevents indentation, respectively about the case where an indentation prevention board is used. (A) and (b) are the top views and side views explaining the principle which prevents indentation, respectively about the case where an indentation prevention board is used. (A) and (b) are the top views and side views explaining the principle which prevents indentation, respectively about the case where an indentation prevention board is used. (A) and (b) are the top views and side views explaining the principle which prevents indentation, respectively about the case where an indentation prevention board is used. (A), (b), (c), and (d) are a plan view and a side view for explaining the principle of preventing indentation in the case of using indentation prevention plates, respectively. 1 shows a first embodiment of a dent prevention structure according to the present invention, in which (a) is a side view, (b) is a view taken along the line AA in FIG. 8 (a), and (c) is FIG. 8 (a). It is a BB line sectional view of). 8 shows a deformation operation of the structure shown in FIG. 8, (a) is a schematic overall view, (b) is an enlarged view of the upper portion, and (c) is a view taken along line AA in FIG. 9 (b). FIG. 10 shows a second embodiment of the indentation preventing structure according to the present invention, in which (a) is a side view, (b) is a view taken along line AA in FIG. 10 (a), and (c) is FIG. 10 (a). It is a BB line sectional view of). Another embodiment is shown about 2nd Embodiment, (a) is a side view, (b) is the AA arrow directional view of Fig.11 (a), (c) is FIG.12 (a). It is a BB sectional view taken on the line. It is explanatory drawing which shows another embodiment about 2nd Embodiment. 3 shows a third embodiment of a dent prevention structure according to the present invention, where (a) is a side view, (b) is a view taken along the line AA in FIG. 13 (a), and (c) is FIG. 13 (a). It is a BB line sectional view of). It is explanatory drawing which shows another embodiment about 3rd Embodiment. 4A and 4B show a fourth embodiment of a dent prevention structure according to the present invention, where FIG. 15A is a side view, FIG. 15B is a view taken along the line AA in FIG. It is a BB line sectional view of). About 4th Embodiment, another embodiment is shown, (a) is a side view, (b) is the AA arrow directional view of Fig.16 (a), (c) is Fig.16 (a). It is a BB sectional view taken on the line. Another embodiment of the fourth embodiment is shown, wherein (a) is a side view, (b) is a view taken along the line AA in FIG. 17 (a), and (c) is FIG. 17 (a). It is a BB line sectional view of).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIGS. 8A, 8B, and 8C, the upper and lower ends of the column 15 (vertical member) are connected to the base 11 (horizontal member) and the beam 16 (horizontal member). The indentation preventing structure according to the present invention is used. 8A to 8C, so-called “non-penetrating” indentation preventing structures (see FIGS. 3 and 4) are used at the upper and lower ends of the left side of the column 15 (vertical material). So-called “penetrating type” sinking prevention structures (see FIGS. 5 and 6) are used at the upper and lower ends.

  That is, as shown in FIGS. 8A to 8C, on the left side of the column 15 (vertical material), the beam 16 a or the base 11 is formed at a site that receives a load from the column 15 (a site where the column 15 is provided). The screw rod member 12 (first shaft member) extending in the fiber orthogonal direction Z is embedded in the fiber orthogonal direction Z orthogonal to the fiber direction, and the load is applied to the screw rod member 12 in the fiber orthogonal direction Z. It is received through the anti-slip plates 14B and 14A (for example, steel plates), and is prevented from sinking into the beam 16 or the base 11 due to the load. In addition, the width of the beam 16a or the base 11 is larger than the width of the anti-slip plates 14B and 14A.

  The tenon 15a, 15b (or dowel) formed at the lower end and the upper end of the column 15 is passed through the through holes 14Aa, 14Ba of the anti-slip plates 14A, 14B, and the mortises 11a, 16a (or 16a) of the base 11 or the beam 16. It is assembled by fitting into a dowel hole. A rigid member having a threaded rod member 12, a dent prevention plate 14B, 14A, and a long screw member 17 is disposed on one side with respect to the fitting portion between the mortise holes 11a, 16a and the mortises 15a, 15b.

  On the right side of the column 15 (vertical material), a long screw member 17 extending in parallel with the column 15 is disposed, and the upper and lower side portions of the long screw member 17 extend through the beam 16 and the base 11, and the lower portion is It extends into the fabric foundation 13. That is, the long screw member 17 includes an upper screw 17A that penetrates the beam 16, a lower screw 17B that penetrates the base 11, and an intermediate screw 17C that couples them via a connector 17D (or a turnbuckle). The length of the long screw member 17 can be adjusted. The upper screw and the lower screw can be separated from each other by using a hole-down hardware or the like without being connected via a connector with an intermediate screw.

  Further, the portions of the long screw member 17 that pass through the anti-slip plates 14A and 14B are fixed in such a manner that the anti-skin plates 14A and 14B are sandwiched by fasteners 18 made of washers and nuts. Further, a fastener 18 made of a washer and a nut is also applied to the protruding portion of the upper screw 17 </ b> A that penetrates the beam 16.

  As described above, the rigid member having the screw rod member 12 and the anti-snipping plates 14B and 14A is provided through the beam 16 or the base 11, and the load in the fiber orthogonal direction Z from the column 15 is applied to the screw rod member 12 and Through the anti-slip plates 14B and 14A, that is, the beam 16 or the base 11 is bypassed, and transmitted to the beam 16 or the other part below the base 11 (for example, the cloth foundation 13). The end of the screw rod member 12 is in contact with the stagnation prevention plates 14A and 14B provided along the surface of the base 11 or the beam 16. The slip-in preventing plates 14A and 14B are embedded in the base 11 or the beam 16 so as to be flush with the surface of the base 11 or the beam 16.

  In this way, by simply connecting the upper anti-skin plate 14B (beam 16) and the lower anti-skin plate 14A (base 11) with the column 15 and the long screw member 17, the upper and lower spaces between the columns 15 (vertical members) In addition, when the horizontal load F1 is applied, the column 15 tends to rotate, and a force for pushing the column 15 into the beam 16 or the base 11 provided above and below the column 15 is generated. For example, considering the upper portion, as shown in FIGS. 9A, 9B, and 9C, the long screw members 17 provided on the left and right of the contact centered on the contact point between the column 15 and the beam 16 are fitted into the plate. A rotational moment in the clockwise direction is generated with respect to 14B. On the other hand, the reaction force of the screw rod member 12 provided on the left side generates a rotational moment in the counterclockwise direction, and as a result, the rotation of the dent prevention plate 14B is suppressed.

Therefore, it is desirable to provide a brace material as in the following second embodiment.
(Second Embodiment)
In this embodiment, “non-penetrating” indentation preventing structures are used on the upper and lower left sides of the column 15, “penetrating” indenting preventing structures are used on the upper and lower ends of the column 15, and the brace 22B , 22A is provided.

  As shown in FIGS. 10 and 11, the upper portion (upper screw 17 </ b> A) and the lower portion (lower screw 17 </ b> B) of the long screw member 17 are provided at the upper and lower connecting portions between the beam 16 or the base 11 and the column 15. The end portions of the brace members 22B and 22A are connected to the anti-retraction plates 14B and 14A via the brace end hardware 21B and 21A.

  In other words, in the connecting portion, the brace end hardware 21B, 21A is fixed to the indentation prevention plates 14B, 14A, and the brace ends 22B, 22A are connected to the end portions of the brace members 22B, 22A.

  The brace end hardware 21A has a horizontal part 21Aa attached to the base 11, a vertical part 21Ab attached to the column 15, and an end part of the brace member 22A extending in a direction perpendicular to the horizontal part 21Aa and the vertical part 21Ab. And a hardware main body 21Ac. This end metal part 21A is also fixed to the long screw member 17 by a fastener 18 comprising a washer and a nut. The upper brace end hardware 21B has the same structure and includes a horizontal portion 21Ba, a vertical portion 21Bb, and a hardware main body 21Bc.

  Thereby, for example, when a rightward force acts on the beam 16 or the base 11 (horizontal member), the force acting on the brace end hardware 21B, 21A from the brace members 22B, 22A is applied to the anti-indentation plates 14B, 14A. Is transmitted to the long screw member 17, so that the fitting plates 14 B and 14 A and the long screw member 17 cooperate to prevent the brace end hardware 21 B and 21 A from sinking into the beam 16 or the base 11. Become.

  In addition, as shown in FIG. 12, the upper and lower connecting portions of the base 11 or the beam 16 and the column 15 are on the side opposite to the side provided with the long screw member 17 via the brace end hardware 21A and 21B. It is also possible to connect the ends of the bracing members 22A and 22B to the indentation preventing plates 14A and 14B.

  In this case, the first screw rod member 12 penetrating the base 11 or the beam 16 is provided corresponding to the portion where the brace end hardware 21A, 21B is provided.

  It is not always necessary to provide the long screw member as described above, and the long screw member may be omitted as shown in FIG. In this case, the ends of the bracing members 22A and 22B are prevented from being sunk in the connecting portion between the base 11 or the beam 16 (horizontal member) and the column 15 (vertical member) via the brace end fittings 21A and 21B. Needless to say, the first screw rod member 12 is provided on the base 11 or the beam 16 corresponding to the brace end hardware 21A, 21B. The first screw rod member 12 is also provided on the side where the long screw member 17 is provided.

In addition, it is not always necessary to provide the anti-skin plate as described above, and it can be configured as in the following third embodiment.
(Third embodiment)
As shown in FIGS. 14 (a), (b), and (c), the lower end portion of the column 15 is connected to the portion where the first screw rod member 12 is provided through the base 11, and this is provided. The second screw rod member 12A is embedded in the lower end portion of the column 15 corresponding to the first screw rod member 12, and the upper end portion (head 12aa) of the first screw rod member 12 and the second screw The lower end portion (head portion 12Aa) of the rod member 12A is in contact with the rod member 12A and delivers a load. Here, the first and second screw rod members 12 and 12A have the same shape, and the head portion 12aa of the first screw rod member 12 and the head portion 12Aa of the second screw rod member 12A can transfer the load. They are in contact with each other as much as possible.

  Further, the upper end portion of the column 15 is connected to a portion where the screw rod member 12 is provided through the beam 16, and the upper end portion of the column 15 is also provided at the upper end portion of the column 15 in the same manner as the lower end portion. 12, the second screw rod member 12 </ b> A is embedded, and the lower end portion 12 bb of the first screw rod member 12 and the head portion 12 </ b> Aa of the second screw rod member 12 </ b> A come into contact with each other to transfer the load. To do.

  Thereby, when transmitting the load of the column 15 downward, the force in the fiber orthogonal direction Z acts on the base 11 and the beam 16 for a long period of time, and the base 11 and the beam 16 are sunk in the fiber orthogonal direction Z by this load. However, the indentation deformation is prevented by transmitting the load between the screw rod members 12 and 12A.

  Further, as shown in FIGS. 15 (a), (b), and (c), it is possible to provide anti-slip plates 14A and 14B between the screw rod members 12 and 12A. If it does in this way, it will prevent that the base 11 and the beam 16 will dig into a fiber orthogonal direction Z and deform | transform by the said load by performing load transmission between the screw rod members 12 and 12A and the dent prevention plates 14A and 14B. can do.

  In the above-described embodiment, a description has been given of what is applied to a wooden frame construction method that forms a framework of a house with wooden frames such as columns, beams, girders, braces, etc., but the present invention is not limited thereto. Independent floor panels (upper and lower frames) and wall panels (vertical frames) are stacked for each floor, and the panel cavities are filled with heat insulating material. It can also be applied to a wall-building method.

  For example, as shown in FIGS. 16A, 16B, 16C, and 16D, the threaded rod member 12B penetrates the upper and lower frames 31B and 31A, which are horizontal members, and the penetrating portion is orthogonal to the upper and lower frames. It is configured to be embedded in a vertical frame 32 that is a vertical member extending in the direction, and the lower frame 31A is provided on the base 11 so that the head 12aa (upper end) of the screw rod member 12 that penetrates the base 11 is provided. In addition, the load can be transferred by contacting the head 12Ba (lower end) of the screw rod member 12B penetrating the lower frame 31A.

  Further, by providing the lower frame 31A on the upper frame 31B, similarly, the screw rod member 12B penetrating the lower frame 31A on the head 12Ba (upper end portion) of the screw rod member 12B penetrating the upper frame 31B. The head portion 12Ba (lower end portion) is in contact with each other, and the load is transferred. The screw rod member 12B penetrating the upper and lower frames 31B and 31A and the screw rod member 12 penetrating the base 11 are arranged coaxially.

  Also, as shown in FIGS. 17 (a), (b), (c), and (d), by using the anti-slip plates 14A and 14B, the base 11 and the beam 16 are moved in the direction perpendicular to the fiber by the load as described above. It is possible to prevent indentation and deformation in Z by performing load transmission between the screw rod members 12 and 12A and the indentation prevention plates 14A and 14B.

11 foundation (horizontal material)
12, 12a, 12A, 12B Screw rod member 12aa, 12Aa, 12Ba Head 12b Nut 12bb Lower end 12c, 14A, 14B Inset prevention plate 13 Cloth foundation 15 Column (vertical material)
16 Beam (horizontal material)
17 Long screw member 17A Upper screw 17B Lower screw 17C Intermediate screw 21A, 21B Bracing end hardware 22A, 22B Bracing material 31A Upper frame (horizontal material)
31B Lower frame (horizontal material)
32 Vertical frame (vertical material)

Claims (10)

A concavity that is a part that receives a load of a horizontal member, and is configured to embed a rigid member in a direction perpendicular to the fiber direction of the horizontal member and transmit the load to the rigid member in the direction perpendicular to the fiber. Prevention structure,
Said rigid member, it said provided a horizontal member through said under a load of fibers perpendicular direction is intended to be transmitted to the lower basis of the horizontal members, along the surface to the horizontal member An anti-slip plate that is provided and receives a load in the direction perpendicular to the fiber, and a first shaft-like member that is provided corresponding to the anti-skin plate and extends in the direction perpendicular to the fiber
A vertical member extending in a direction orthogonal to the horizontal member is provided at the portion where the anti-slip plate is provided,
A long screw member extending in parallel with the vertical member is arranged along with the vertical member, and an end portion of the long screw member penetrates the anti-indentation plate, and the long screw member is attached to a nut that contacts the anti-indentation plate. And an anti-indentation structure fixed to the anti-indentation plate . The sinking prevention plate, the horizontal member of the surface and the horizontal members embedded within it has claim 1 wherein embedment preventing structure so that the flush. The first shaft member is a screw rod member,
The dent prevention plate has a through hole, and a nut member is fixed corresponding to the through hole,
The indentation preventing structure according to claim 1 or 2 , wherein the screw rod member is screwed into the nut member and extends through the indentation preventing plate. The first shaft member is a screw rod member,
The anti-skid plate has a screw hole,
The indentation preventing structure according to claim 1 or 2 , wherein the screw rod member is screwed into the screw hole and extends through the indentation prevention plate. The tenon or dowel vertical material, embedment prevention structure according to any one of claims 1 to 4 is fitted in the mortise or dowel holes of the horizontal member through the through hole of the baffle plate the sinking. An end portion of the brace material is connected via a brace end metal fitting at a connecting portion between the horizontal member and the vertical member, and the long screw member is coupled to the anti-retraction plate together with the brace end metal piece. Item 1. The structure for preventing indentation according to Item 1 . In the connecting portion between the horizontal member and the vertical member, the side provided on the long screw member is on the opposite side to the vertical member, and the horizontal member is connected to the horizontal member corresponding to the anti-slip plate. The indentation preventing structure according to claim 1, wherein one shaft-like member is provided. In the part where the first shaft-like member is provided, a vertical material extending in a direction orthogonal to the horizontal member is provided,
A second shaft-shaped member is embedded in the vertical material in the longitudinal direction of the vertical material corresponding to the first shaft-shaped member, and ends of the first shaft-shaped member and the second shaft-shaped member. The indentation preventing structure according to claim 1, wherein the portions are in contact with each other. In the part where the first shaft-like member is provided, a vertical material extending in a direction orthogonal to the horizontal member is provided,
A second shaft-shaped member is embedded in the vertical member corresponding to the first shaft-shaped member, and is prevented from being caught between the end portions of the first shaft-shaped member and the second shaft-shaped member. 2. The anti-scribing structure according to claim 1, wherein the plate is located. The first shaft-shaped member penetrates the horizontal member, and a portion protruding through the horizontal member is embedded in a vertical member extending in a direction perpendicular to the horizontal member,
The intrusion prevention structure according to claim 1, wherein the structure is in contact with an end portion of a first shaft-like member provided on another horizontal member in contact with the horizontal member.

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