JP4034322B2 - Connection structure of wood and structure for wooden building using the same - Google Patents

Description

  The present invention relates to a timber connection structure having a phased structure that connects timbers so as to cross each other, and a structure for a wooden building using the same.

One of the joint structures connecting woods is a phased structure. As shown in FIG. 8A, this phase notch structure forms, for example, a rectangular notch b with respect to mating members a that are joined together, and the notch recesses b are fitted together so that the members a can be joined together. They are joined within the same plane and at a predetermined crossing angle.
In this phase lacking structure, since the joint portion is flush, the appearance is improved when it is assembled as a woodwork structure. However, in this structure, when a tensile stress or the like is relatively applied along the longitudinal (wood) direction, a peeling force is generated in the wood direction with the bottom surface portion of the notch recess b as a boundary, and particularly a force is applied. When the side is the short side, as shown in FIG. 8B, it is easy to shear and peel along the grain direction.

Therefore, in the following patent document, the front and back of the staggered portion which is the connecting portion is covered with a thin plate-shaped reinforcing metal fitting bent into a shape corresponding to the crossing angle, and this is fixed to constitute a reinforcing structure. .
JP-A-10-231558

  However, in such a reinforcing structure, the workability is poor, the thickness of the reinforcing bracket is increased, and the joining member such as a nail is exposed on the outer surface, so that the appearance is deteriorated, and this part is finally finished. It did not conform to the specifications as a woodworking structure and required processing to cover this surface with a finishing material, which was troublesome.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wood connection structure that is not easily sheared even when a force is applied in the direction of wood in the phased portion. Is.

  In addition, another object of the present invention is to provide a wooden structure suitable for a structure used for a wooden building having a bearing wall structure, a partition having a Japanese-style design, etc., by having a connection structure with the above-described phased structure. A structure for a building is provided.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
According to the wood connection structure of the first aspect of the present invention, by forming the notch recesses 2 that are half the thickness of each other in the thickness direction, and fitting the notch recesses 2 together, In a pair of timbers 1 combined in a cross shape,
A slope 3 is formed on at least one side 2a of both edges along the grain direction of the notch recess 2 fitted to each other, and the contact area with the contact surface 1b in the direction perpendicular to the grain of the mating timber 1 intersecting is determined. It is characterized by having been reduced.

  According to the wood connection structure of claim 2, the inclined portion 3 is formed on the side where the distance between the formation position of the notch recess 2 and the end portion 1a of the wood 1 is short. Is.

According to the wood connection structure according to claim 3, the dowel hole 4 penetrating the thickness direction of the wood 1 is formed in the notch recess 2, and the wood 1 is connected by the dowel 5 in a fitted state. It is characterized by that.

A structure for a wooden building using a wood connection structure according to claim 4, wherein the both ends are the connection structure, the intersection is formed to form a plurality of pairs, and the wood 1 is disposed with the longitudinal direction inclined. , Consisting of a pair of frame members 10 that fix the crossing portions of each timber 1,
Each of the frame members 10 is divided in half in the thickness direction, and corresponds to a half of the thickness of the wood, and by forming an X-shaped notch recess 11 corresponding to the intersecting shape of the intersecting portion. The crossing portions are sandwiched and the end portion 1a is fixed to the outer side of the frame member 10 so as to be fixed.

  The structure for a wooden building using the wood connection structure according to claim 5 includes a main frame 22 formed by a pair of left and right column members 12 connected between the base 23 and the horizontal member 24 or between the pair of horizontal members 24. In addition, the main frame 22 is combined with the frame structure 10 inside the main frame 22 in the same plane, and both sides are connected to the frame member 10 and upper and lower ends are connected to the upper and lower frame members 20 and 21. A plurality of pairs of timbers 1 are arranged, and the projecting ends of the timbers 1 from the both-side frame members 10 are fitted into receiving holes 13 formed inside the pillar members 12. It is.

  According to the wood connecting structure according to claim 1 of the present invention, when an external force is applied in the grain direction, the contact area with each other is reduced. It will be awakened. Thereby, the shear stress which makes the boundary the bottom face of a notch recessed part does not generate | occur | produce easily, and the shear peeling along a wood grain direction becomes difficult to occur.

  The processing for doing so is simple because it only requires processing of the inclined surface, and since there is no out-of-plane protruding portion, it is also preferable in terms of design.

  According to the wood connection structure of the second aspect, when the distance between the recess and the wood edge is short, the above-described shear peeling prevention effect is high.

  According to the wood connection structure of the third aspect, the dowel can prevent relative movement between the two woods when an external force is applied.

  In the structure for a wooden building according to the fourth aspect of the present invention, since the intersecting portion, which is a portion connected by the notch concave portions, is sandwiched and fixed by the frame body, it is possible to prevent the timber from separating at this portion.

  According to the structure for a wooden building according to claim 5, the protruding portion of the wood from the frame material is fitted into the receiving hole inside the column, and is fixed to the inside of the column-horizontal material-base together with the frame material. The The assembled structure acts as a resistor for the substantially horizontal direction, which is an external force along the longitudinal direction of the horizontal member, by each piece of wood assembled in an X shape. From this, the resistance is large compared with the conventional bracing, and when this is used as a structure for a wooden building, it can be used as a load-bearing wall that enhances the strength improvement effect of the wooden building. Furthermore, each timber is within the same plane, and it is possible to arrange a plurality of X-shapes in the vertical direction in the main frame, and the outer surface can be configured with no joining member such as a nail, Since itself can be used as a finishing material, it can be used not only as a structural material but also as a partition of a Japanese design alone or in combination with a shoji screen.

Hereinafter, the best mode of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an exploded perspective view including a partially assembled state showing a wood connection structure according to the present invention, and FIGS. 2A and 2B are sectional views for explanation in the assembled state.
In FIG. 1, a plurality of timbers 1 used as slope members of a structure to be described later are manufactured to have the same width, thickness, and length, and are notched at 45 ° with respect to the longitudinal direction at both ends 1a. Are formed from both side edges to form a 90 ° tip. Then, at a position close to both ends, a notch recess 2 having a depth that is ½ of the material thickness and equal to the width of the wood 1 is formed so as to intersect each other by 90 ° and be joined in the same plane. It forms in the upper surface and bottom surface which become a mutually opposing surface.

  An inclined portion 3 for reducing the joint area with the counterpart wood 1 is formed on the side of the wood end 1 a of the notch recess 2, and each piece of wood is provided at the approximate center position of the notch recess 2. The dowel hole 4 penetrating through the thickness direction of the material 1 is formed to be open and joined to each other, and then the dowel hole 5 formed with substantially the same length as the material thickness is inserted into the dowel hole 4 to improve the joining property. ing.

  In the above, as shown to Fig.2 (a), the joined timber 1 will be in the joining form in the same surface which crossed 90 degrees. When a tensile force in the direction of arrow A in FIG. 5B is applied from this state, a peeling force in the wood direction is generated on the edge 1a side of the wood 1 with the bottom surface portion of the notch recess 2 as a boundary. However, since the mutual contact area is reduced, the edge 2a of a small area bites into the contact surface 1b, and this part and the mating edge in the direction perpendicular to the grain of the mating wood 1 are bitten together. This shear stress is absorbed while being deformed. Moreover, the shearing force in the same direction as the tensile force is also reduced by the action of an out-of-plane sliding force along the inclined portion 3 indicated by the arrow B in FIG. Although omitted in FIG. 2, the dowel 5 is fitted through both notched recesses 2, thereby reducing the tensile force in the direction of arrow A and preventing the deviation itself. Also have.

  Next, the principal part structure of the structure for wooden buildings using the above connection structure is demonstrated using FIGS. 3A to 3D are perspective views showing an assembly procedure of a structure using a connecting structure, FIG. 4A is a partial cross-sectional view in an assembled state, and FIG. 3B is an AA view of FIG. FIG. 5A and FIG. 5B are explanatory partial sectional views showing the direction of the force applied to the end of the wood accompanying the direction of the force applied to the frame member.

  First, in the vicinity of the end of the sloped material 1 as wood (the same as the wood 1, the shape of each part of the sloped material 1 uses the reference numerals of the parts of the wood 1 shown in FIGS. 1 and 2). Intersection 7 is formed in the connection structure. As shown in FIG. 3 (a), this structure intersects with a shape corresponding to the intersecting shape of the intersecting portion 7, that is, an X shape with an angle of 90 ° at the center and 45 ° with respect to the horizontal plane. The recess 11 includes a plate-like frame member 10 that has been cut and formed in advance. This frame member 10 is divided into half in the thickness direction, and the half-divided body 10a constitutes the columnar frame member 10 in a state of being overlapped, and the X-shaped recesses 11 are respectively formed on the opposing surfaces thereof. The depth of cut of the recess 11 is half the thickness of the inclined member 1.

  Then, as shown in FIG. 3B, in a state where the intersecting portion 7 of the inclined member 1 is incorporated in the concave portion 11 of one half-divided body 10a, the concave portions 11 of the other half-divided body 10a are overlapped with each other. Match. In other words, the intersecting portion 7 of the inclined member 1 is fitted into the opposing recesses 11 and 11 of each half-divided body 10a and is sandwiched by each half-divided body 10a. As shown in FIG. 3C, these half-divided bodies 10 a are joined to the frame member 10 in a state where the intersecting portion 7 of the inclined member 1 protrudes the end 1 a of the inclined member 1 to the outside of the frame member 10. Integrated as In addition, as a joining means, an adhesive agent is used, for example, and the adhesive is completely integrated after the adhesive is cured by using a good adhesive material for the wood material. In the assembled state, the protruding end portion 1a from the frame member 10 at the intersecting portion 7 of the inclined member 1 is arranged in a substantially rectangular shape according to the 90 ° cutout.

  After that, as shown in FIG. 3D, the frame member 10 is attached to the inner side of the column member 12 in the main frame which will be described later. The column member 12 is formed with a rectangular receiving hole 13 into which the end 1a is fitted. As shown in FIGS. 4A and 4B, in the attached state to the column member 12, the projecting ends (1 a, 1 a) of the inclined member 1 from the frame member 10 substantially match the shape of the receiving hole 13.

  When upward and downward tensile stresses (shaded arrows) are applied to the frame member 10 in the structure assembled as described above as indicated by arrows in FIGS. 5 (a) and 5 (b), Inclined material 1 becomes resistance in the pulling direction (white arrow) and compression direction (black arrow) indicated by the arrows, respectively, and simultaneously disperses at different angles to maintain the shape of the frame material 10. A general bracing exhibits a bidirectional resistance as compared with either a compression resistance due to a material or a tensile resistance due to a metal, thereby maintaining a framed rectangular shape. At the same time, as described above, the wood 1 is joined in the same plane 90 ° intersecting each other, and since the mutual contact area is reduced, the edge 2a of a small area bites into the contact surface 1b, The shear stress is absorbed while the joint edge in the direction perpendicular to the grain direction of this part and the counterpart wood 1 is deformed while biting into each other. Furthermore, in each timber, the dowel 5 penetrates both notch recessed parts 2, and a firm structure is comprised.

  Next, the overall configuration of the structure for a wooden building using the connection structure in the above configuration will be described. FIG. 6 is a front exploded view showing the overall structure of the structure, and FIG. 7 is a perspective view of the structure for a wooden building, showing the assembled state.

In the present embodiment, as shown in FIG. 6, four pairs of inclined members 1 are arranged in the vertical direction, and the two pairs in the center have each inclined member 1 as a long length, and the crossing position in the center in the longitudinal direction is also lacking. An intersection portion is formed in an X shape so as to be within the same plane by the connecting structure, and each end portion 1a is joined to the left and right frame members 10 by the structure as described above.
The upper and lower pairs are approximately half the length of the central inclined member 1, and both sides thereof are joined to the left and right frame members 10 by the structure as described above. The intersecting portion 7 which is the upper end of the upper inclined member 1 is connected to the lower center of the top frame 20 as a horizontal member connected to the left and right frame members 10 by mortise and mortise coupling. The intersecting portion 7 which is the lower end of the lower inclined member 1 is connected to the upper center of the ground frame 21 connected to the left and right frame members 10 by mortise and mortise coupling. The top frame 20 and the ground frame 21 are connected to each other by forming a rectangular receiving hole and fitting it in the same manner as the frame member 10 described above. And as a whole, each inclined member 1 has a framework shape of a design in which rhombus patterns each having a substantially square shape are vertically continuous.

On the other hand, the main frame 22 is constituted by the pair of left and right pillars 12 described above connected by tenon and mortise couplings on both sides between the base 23 on the lower side and the horizontal member 24 on the upper side. 10, the frame structure constituted by the top frame 20 and the ground frame 21 is fixed to the inside thereof.
In the present embodiment, a space is formed between the horizontal member 24 and the top frame 20. A reinforcing member 25, for example, a steel shaft, is horizontally provided immediately above the top frame 20, and both ends are connected to left and right columns. The left and right column members 12 are connected to each other by being disposed through the member 12 and fastened and fixed with a nut member or the like.

  The connection structure of the top frame 20 and the ground frame 21 with respect to the column member 12 is combined by a structure composed of tenons and tenon holes, and the left and right frame members 10 and the column member 12 are frame members of the inclined member 1. 10 are connected via the receiving hole 13 that receives the protruding end portion 1a toward the outside.

Therefore, in the structure assembled as described above, the entire frame is rhombus-shaped by the external force in the substantially horizontal direction that is the external force along the longitudinal direction of the horizontal member 24 by the plurality of inclined members 1 assembled in an X shape. It acts as a resistor against an external force to be deformed, and its resistance increases compared to a conventional brace arranged in a diagonal direction.
Thereby, this structure can also be configured as a load-bearing wall, and when used as a structure for a wooden building, the effect of improving the strength of the wooden building can be obtained.
In addition, each inclined member 1 is accommodated in the same plane by a phased structure, and a plurality of X-shaped structures are arranged in the vertical direction within the thickness of the main body frame 22, and a joining member such as a nail is exposed on the outer surface. Since it becomes the surface of the material itself, it can be used as a finishing material, and can be used alone as a partition of a Japanese design as well as a simple structural material.

Moreover, since it becomes the structure provided with the space part penetrated by the inclined body 1, it becomes a wall-like structure which can also perform lighting, and it becomes possible to remove a feeling of pressure like a simple wall material, It is also possible to show the indoor space widely.
Furthermore, since sufficient strength can be obtained as a structure with only a frame-like member such as the inclined member 1 and the frame member 10, this structure can be configured like a shoji lattice. It can be used in combination with various materials, such as arranging shoji paper, or by placing transparent glass, frosted glass, or deploying transparent resin plates or colored resin plates to improve design. Is possible.

  In this embodiment, as shown in FIG. 7, the width of the column member 12, the base 23, and the horizontal member 24 is set to the same width as the frame member 10, the top frame 20, and the ground frame 21. It may be narrower and fit inside the main frame 22.

  Moreover, the part which cross | intersects the X shape in the said center also formed the notch recessed part as a notch structure. In this case, inclined surfaces for reducing the contact area of the fitting portion may be formed on both sides or one side of the notch recess as necessary, but this portion has sufficient length to the left and right ends. In addition, there is little possibility that shear peeling occurs, and it is not always necessary if it is designed to be exposed to the outside because of its design.

It is a disassembled perspective view including the partial assembly state which shows the connection structure of the timber concerning this invention. (A), (b) is sectional drawing for description in the same assembly state. (A)-(d) is a principal part perspective view which shows the assembly procedure of the structure using a connection structure. (A) is a fragmentary sectional view in an assembly completion state, (b) is a sectional view in an AA line of (a). (A), (b) is the explanatory fragmentary sectional view which shows the direction of the force added to the inclination material edge part accompanying the direction of the force added to a frame material. It is a front exploded view which shows the whole structure of the structure for wooden buildings. It is a perspective view which similarly shows an assembly completion state. (A), (b) is sectional drawing for description which shows the conventional lack connection structure.

Explanation of symbols

1 ... wood (gradient)
DESCRIPTION OF SYMBOLS 1a ... End part 1b ... Contact surface 2 ... Notch recessed part 2a ... Edge part 3 ... Inclined part 4 ... Dowel hole 5 ... Dowel 7 ... Crossing part 10 ... Frame material 10a ... Half-divided body 11 ... X-shaped notch Concave portion 12 ... pillar material 13 ... receiving hole 20 ... frame material (top frame)
21 ... Frame material (ground frame)
22 ... Column main frame 23 ... Base 24 ... Horizontal member

Claims (5)

By forming a notch recess that is half the thickness of each other in the thickness direction and fitting the notch recesses together,
Inclined portions are formed on at least one of both edges along the grain direction of the notched recesses to be fitted to each other, and the contact area with the abutment surface of the intersecting wood in the direction perpendicular to the grain direction is reduced. Connected wood structure.   2. The wood connection structure according to claim 1, wherein the inclined portion is formed on a side where a distance between the formation position of the notch recess and the end of the wood is short. The wood connection structure according to claim 1 or 2, wherein a dowel hole penetrating the wood thickness direction is formed in the notch recess , and the wood is connected by a dowel in a fitting state between the woods. A structure for a wooden building using the wood connection structure according to claim 1, 2 or 3,
It consists of a pair of frame members that fix both sides of each timber, and a wood that is arranged in a plurality of pairs with the connection structure in the vicinity of both ends to form a plurality of pairs and inclined in the longitudinal direction,
Each of the frame members is divided in half in the thickness direction, and corresponds to half the thickness of the wood, and by forming an X-shaped cutout recess corresponding to the intersection shape of the intersection portion, A structure for a wooden building, characterized in that each crossing portion is sandwiched and the end portion is fixed to a state protruding from the frame material.   The main frame is constituted by a pair of left and right pillar members connected between the base and the horizontal member or between the pair of horizontal members, and is combined in an X shape in the same plane by the connecting structure inside the main frame. A plurality of pairs of timbers having both sides connected to the frame member and upper and lower ends connected by upper and lower frame members, and the outer projecting ends of the timbers from the both side frame members are arranged inside the column member The wooden building structure according to claim 4, wherein the wooden building structure is fitted into a receiving hole formed in the inner wall.

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