JPH0735603U - Beam joint structure in wooden building - Google Patents

Abstract

(57) [Summary] [Purpose] Satisfies the beam joint structure without impairing the appearance, not only for wooden buildings using general timber but also for large-scale wooden buildings using structural laminated timber. The tightening strength should be obtained. [Structure] Fitting space 13 formed at the joint ends of beams 9 and 10
Is mounted on the bottom plate 2 of the main body 1 in a state of being fitted to the main body 1 of the joining metal fitting, and the driving wedges 20 and 21 which are sufficiently longer than the height (thickness) of the joining end portion and which are tapered are provided. The upper and lower sides of the driving wedges 20 and 21 that are still protruding when the wedge guide pieces 4 and 5 of the main body 1 are inserted and inserted along the upward inclined surfaces 6 and 7 and the joint ends are completely joined. An end portion is cut and removed, and a cover plate 22 mounted on the joint end portion and having a slight gap therebetween is fixed to an upper end surface of a core plate 3 of the joint metal fitting main body 1 with a screw. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a beam joint structure in a wooden building.

[0002]

[Prior art]

 In a wooden structure, the joint structure where two timbers are connected includes a pillar-beam joint structure, a pillar-base joint structure, a beam-beam joint structure in a series or orthogonal direction, There are various joint structures, such as the joint structure of the tops of a pair of left and right diagonal members that form the triangle of the truss together with the beam, and the outer end of the diagonal member and the upper end of the column. The joining of two timbers in these various joining structures has conventionally been performed by cutting, piercing, etc., joining metal fittings such as nails, bolts / nuts, dowels, flange plates, and adhesives. Various types are known, such as those in which

[0003]

[Problems to be solved by the device]

 All of the above-mentioned various types of splicing have been developed and adopted for splicing general wood, that is, muku lumber, and it is recognized that they have some action and effect. However, this joining type lacks the tightening strength for the joining structure in a large-scale wooden building that uses the structural laminated timber, which has recently been attracting attention and has been constructed, for the main structure part. In addition, it is not always satisfactory because the joint fitting is exposed on the outer surface and is not visible. The main purpose of the present invention is not only for wooden buildings using general timber but also for large-scale wooden buildings using structural laminated timbers, the beam joint structure does not impair the external appearance, and the tightening strength is sufficient. The purpose of this is to provide a beam joint structure that can obtain

[0004]

Means for Solving the Problems The structure of a beam joint structure in a wooden structure according to the present invention is as follows.

The joining metal fitting main body 1 vertically establishes on the upper surface of the bottom plate 2 a core plate 3 having a height slightly lower than the height (thickness) of the beams 9 and 10 to be joined to each other, and this core Wedge guide pieces 4, 4, 5, 5 with inner side surfaces facing at least mutually facing upwardly inclined surfaces 6, 6, 7, 7 at symmetrical positions on both side surfaces of the plate 3 in the longitudinal direction thereof. Through holes 2 '... Are provided in the bottom plate 2 at positions corresponding to the lower ends of the upward inclined surfaces 6, 6, 7, and 7.

The beams 9 and 10 are provided at their joint ends 11 and 12 at their bottom surfaces and have a required size for receiving the left and right halves of the bottom plate 2 of the joint metal body 1 in the longitudinal direction. A flat groove 14 having a shape, and a vertical groove provided along the center line of the joint ends 11 and 12 and having a required size and shape for receiving the left and right halves of the core plate 3 in the longitudinal direction. It is necessary to have a sufficient space for receiving the wedge wedges 20, 21 described later as well as receiving the wedge guide pieces 4, 5 described above and widening the middle of the vertical grooves 15, 15. There are fitting cavities 13 and 13 formed by continuously forming widened vertical grooves 16 and 17 having a size and a shape, and the fitting cavities 13 and 13 are fitted to the fitting main body 1. In the assembled state, it is mounted on the bottom plate 2 of the main fitting 1 and The upper surfaces of the core plate 3 and the wedge guide pieces 5 and 6 of the joining metal fitting main body 1 are located in the above fitting cavities 13 and 13, and the upper surfaces of the beams 9 and 10, that is, the joining end portions 11 and 1 A slight step s is formed between the upper surface and the upper surface of 2.

[0007] The driving wedges 20, 20, 21, 21 that are sufficiently longer and thinner than the heights (thicknesses) of the joint ends 11, 12 of the beams 9, 10 have a widened vertical length in which the wedge guide pieces 4, 5 are received. The wedge guide pieces 4 and 5 are densely driven and inserted into the above-mentioned extra spaces of the grooves 16 and 17 along the upwardly inclined surfaces 7 and 8 of the wedge guide pieces 4 and 5, and the beams 9 and 10 are forcibly moved in a direction to approach each other. , The end faces 18 and 19 in the longitudinal direction of the joint ends 11 and 12 are pressed into contact with each other, and when the press contact is complete, the driving wedge 20, which still projects above the widening longitudinal grooves 16 and 17, The upper end of 21 and the lower end of the bottom plate 2 below the widening vertical grooves 16 and 17 and protruding from the through hole 2'of the bottom plate 2 are cut and removed.

With the cover plate 22 forming a gap corresponding to the step s between the cover plate 22 and the upper end surface of the core plate 3 of the main fitting 1, the upper surfaces of the joint ends 11 and 12 of the beams 9 and 10 are covered. It is mounted and fastened to the upper end surface of the core plate 3 with screws 24.

[0009]

[Action]

 The beams 9 and 10 to be joined are fitted on the bottom plate 2 of the joining metal fitting body 1 with the fitting cavities 13 and 13 formed on the joining end portions 11 and 12 being fitted to the joining metal fitting body 1. The driving wedges 20, 20, 21, 21 are mounted and densely inserted along the wedge guide pieces 4, 5 into the above-mentioned extra spaces of the widened vertical grooves 16, 17 in which the wedge guide pieces 4, 5 are received. By doing so, the entire beams 9, 10 are forcibly moved in the direction of approaching each other, whereby the longitudinal end faces 18, 19 of the joint ends 11, 12 are brought into pressure contact with each other, whereby the wooden structure A beam joint structure with sufficient tightening or joint strength can be easily obtained in a building.

The driving wedges 20 and 21 are sufficiently longer and thinner than the heights (thicknesses) of the joint ends 11 and 12 of the beams 9 and 10, and the longitudinal ends 18 of the joint ends 11 and 12, When the press contact of 19 is complete, the upper end portion that still projects above the widening vertical grooves 16 and 17, and the through hole 2'of the bottom plate 2 below the widening vertical grooves 16 and 17 are provided. Since the protruding lower end is to be cut and removed by a saw, the driving length is limited as in the case where the lower ends of the widened vertical grooves 16 and 17 are closed by the bottom plate 2 to form a blind end. Therefore, it is possible to sufficiently perform the crimping and tightening of the longitudinal end surfaces 18, 19 of the joint ends 11, 17.

Further, since the cover plate 22 is mounted on the upper surfaces of the joint ends 11 and 12 to cover them and fix them to the upper end surface of the core plate 3 of the main fitting body 1, the beams 9 and 10 are formed. The tightening joint strength of is improved by at least that much. Since a gap corresponding to the step s is formed between the cover plate 22 and the upper end surface of the core plate 3, unlike the case where the cover plate 22 is in direct contact with the upper end surface of the core plate 3. The above-mentioned tightening joint is more firmly performed.

[0012]

【Example】

 1 is mainly a joining metal fitting, which comprises a rectangular bottom plate 2, a rectangular core plate 3 which is vertically installed on the upper surface thereof along a center line and vertically, and both longitudinal ends of the core plate 3. And the wedge guide pieces 4, 4, 5, 5 attached to the opposite side surfaces at symmetrical positions. The wedge guide pieces 4, 4, 5 and 5 have at least inner surfaces facing each other as upward inclined surfaces 6, 6, 7 and 7 for guiding the driving wedges 20 and 21 described below, and the upward inclinations thereof. Through holes 2 '... are provided in the bottom plate 2 at positions corresponding to the lower ends of the surfaces 6, 6, 7, and 7. The height of the core plate 3 is slightly lower than the height (thickness) of the beams 9 and 10 to be joined, which will be described later, and more precisely, the joint ends 11 and 12 thereof. Reference numeral 8 denotes a screw hole formed on the upper end surface of the core plate 3 at a required interval.

This joining metal fitting main body 1 separately prepares a bottom plate 2, a core plate 3 and wedge guide pieces 4 and 5, and assembles them by an appropriate means or method such as welding or screwing, or integrally forms the whole. However, it is clear that it can be produced arbitrarily. The beams 9 and 10 to be joined to each other have fitting cavities 13 and 13 having substantially the same shape as the outer shape of the joining metal fitting main body 1 at the joining ends 11 and 12 thereof (FIG. 2). That is, the fitting cavities 13 and 13 are flat cavities 14 and 14 which are provided on the bottom surfaces of the joint ends 11 and 12 and have a required size and shape to receive the left and right halves of the bottom plate 2 in the longitudinal direction. Vertical grooves 15 and 15 which are provided along the center lines of the joint ends 11 and 12 and have a required size and shape to receive the left and right halves of the core plate 3 in the longitudinal direction, and the vertical grooves 15 and 15 And widened vertical grooves 16 and 17 of a required size and shape which are provided in the middle of the groove and have a margin space for receiving the wedge guide pieces 4 and 5 and receiving the driving wedges 20 and 21 described later. Are continuously formed.

More specifically, the flat cavities 14 and 14 are opened not only on the bottom surfaces of the joint ends 11 and 12 but also on the longitudinal end surfaces 18 and 19 thereof, and the vertical grooves 15 and 15 have their lower ends at the flat cavities 14 and 14. , 14 open continuously and open to the upper surfaces of the joint ends 11 and 12 and the longitudinal end surfaces 18 and 19, and further, the widening vertical grooves 16 and 17 similarly open their lower ends to the flat cavities 14 and 14. It is continuous and has upper ends opened to the upper surfaces of the joint ends 11 and 12.

The beams 9 and 10 are joined as follows. The joining ends 11 and 12 of the beams 9 and 10 are mounted on the bottom plate 2 with the joining cavities 13 and 13 fitted to the joining fitting main body 1. As a result of this mounting, the upper surfaces of the core plate 3 and the wedge guide pieces 4, 5 of the main fitting 1 are located in the fitting spaces 13, 13 described above, and the upper surfaces of the beams 9, 10 or the joint ends 11, A slight step s is formed between the upper surface of 12 (FIG. 3). Moreover, the upper surface openings of the widened vertical grooves 16 and 17 are in a state in which half of the longitudinal end surfaces 18 and 19 are vacant (FIG. 3).

Therefore, the driving wedges 20, 20, 21, 21 are inserted into the vacant sides of the widening vertical grooves 16, 17 that is, the halves of the upwardly inclined surfaces 7, 8 of the wedge guide pieces 4, 5, and the upward inclinations thereof are inserted. Drive closely along surfaces 7 and 8 (Figs. 3 and 4). The driving wedges 20 and 21 are sufficiently longer and thinner than the thicknesses (heights) of the joint ends 11 and 12 of the beams 9 and 10, and by the above-mentioned driving, the beams 9 and 10 as a whole approach each other. It moves along the joining metal fitting main body 1 and presses the longitudinal end faces 18 and 19 of the joining end portions 11 and 12 thereof.

When the press contact is complete, the upper ends of the driving wedges 20 and 21 still protruding above the widening vertical grooves 16 and 17 and the lower portions of the widening vertical grooves 16 and 17, respectively. The lower end portion of the bottom plate 2 protruding from the through hole 2'is cut and removed with a saw. Since the lower ends of the widening vertical grooves 16 and 17 into which the driving wedges 20 and 21 are inserted are opened to the through holes 2'of the bottom plate 2, the tapered lower ends can be penetrated downward. Therefore, the driving is not limited in length as in the case where the lower ends of the widened vertical grooves 16 and 17 are closed by the bottom plate 2 to form a blind end, and the longitudinal end faces of the joint ends 11 and 12 are provided. It is possible to sufficiently secure the pressure contact and tightening of 18 and 19.

Reference numeral 22 is a cover that is mounted on the upper surfaces of the joining ends 11 and 12, and is fixed to the upper end surface of the core plate 3 of the joining metal fitting main body 1 by screws 24. The plate protects the upper surfaces of the joint ends 11 and 12 of the beams 9 and 10 and further strengthens the connection between the main joint fitting 1 and the beams 9 and 10. The cover plate 22 is mounted on the upper surfaces of the joint ends 11 and 12 to which the longitudinal end faces 18 and 19 are pressed, and is screwed into the screw holes 8 on the upper end face of the core plate 3 by the screws 24. Be tightened.

When tightening with the screws 24, the gap corresponding to the step s is formed between the cover plate 22 mounted on the joint ends 11 and 12 and the upper end surface of the core plate 3. Unlike the case where the cover plate 22 is in direct contact with the upper end surface of the core plate 3, this is performed firmly (FIGS. 1 and 5). In this way, the joint structure of the two beams 9 and 10 is completed.

[0020]

[Effect of device]

 As is clear from the above description, the present invention has the following effects.

The beams to be joined to each other are mounted on the bottom plate mainly made of the joining metal fitting with the fitting space formed at the joining end fitted to the joining metal fitting main body, and the driving wedge is wedged. By densely inserting and inserting the guide pieces along the wedge guide pieces into the extra space of the widened vertical groove that receives the guide pieces, the beams are forcibly moved toward each other, thereby joining their joint ends. By pressing the longitudinal end faces of the sections together, a beam joint structure with sufficient tightening or joint strength can be easily obtained in a wooden structure.

The driving wedge is sufficiently longer and thinner than the height (thickness) of the joint end of the beam, and when the pressure contact of the end face in the longitudinal direction of the joint end is complete, the wedge is widened. Since the upper end portion still protruding above the vertical groove and the lower end portion below the widening vertical groove and protruding from the through hole of the bottom plate 2 are cut and removed, the lower end of the widening vertical groove is the bottom plate. Since the driving length is not limited as in the case of a closed blind end, the crimping and tightening of the longitudinal end face of the joint end of the beam is sufficiently performed.

Further, since the cover plate is mounted on the upper surface of the joint end and covers it and is fixed to the upper end surface of the core plate mainly made of the joint metal fitting, the tightening joint strength between the beams is at least that much. Only improve. Since a gap corresponding to the above-mentioned step s is formed between the cover plate and the upper end surface of the core plate, unlike the case where the cover plate is in direct contact with the upper end surface of the core plate 3, The tight joining is more secure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a beam joint structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of the above disassembled state.

FIG. 3 is a perspective view showing a state in which a joint end portion of a beam is mounted mainly on a joint metal fitting.

FIG. 4 is a cross-sectional view showing a state in which a driving wedge is driven into the joining end portion of the above.

FIG. 5 is a cross-sectional view showing a state in which upper and lower end portions of the driving wedge are cut off and a cover plate is mounted and fixed.

[Explanation of symbols]

 s Step 1 Main joining metal 2 Bottom plate 2'Through hole 3 Core plate 4 Wedge guide piece 5 Wedge guide piece 6 Upward sloping surface 7 Upward sloping surface 9 Beam 10 Beam 11 Joint end 12 Joint end 13 Fitting void 14 Flat Empty treatment 15 Vertical groove 16 Widening vertical groove 17 Widening vertical groove 18 Longitudinal end face 19 Longitudinal end face 20 Driving wedge 21 Driving wedge 22 Cover plate 24 Screw

Claims (1)

[Scope of utility model registration request] 1. A main body of a joining metal fitting vertically establishes a core plate having a height slightly lower than a height (thickness) of beams to be joined to each other on an upper surface of a bottom plate, and a longitudinal direction of the core plate. Wedge guide pieces are formed at both end portions and at symmetrical positions on both side surfaces, at least inner surfaces facing each other are inclined upward, and a through hole is formed in the bottom plate at a position corresponding to each lower end of the upward inclined surface. The beam is provided at its joint end portion on the bottom surface thereof, and has a flat space having a required size and shape for receiving the left and right halves in the longitudinal direction of the bottom plate mainly composed of the joint metal fittings. A vertical groove provided along the center line of the joining end portion and having a required size and shape for receiving each of the left and right halves in the longitudinal direction of the core plate; In addition to receiving the above wedge guide piece, It has a fitting space that is formed by continuously forming a widened vertical groove having a required size and shape that has a room for receiving the fitting space. In this state, it is mounted on the bottom plate mainly made of the joining metal fitting, and by this mounting, the upper surfaces of the core plate mainly made of the joining metal fitting and the wedge guide piece are located in the fitting space, that is, the upper surface of the beam, that is, its upper surface. A slight step s is formed between the upper surface of the joint end and a driving wedge that is sufficiently longer than the height (thickness) of the joint end of the beam and has a tapered shape to receive the wedge guide piece. The wedge-shaped guide pieces are densely inserted and inserted in the above-mentioned extra space of the widened vertical groove along the upwardly inclined surface of the wedge guide piece, and the beams are forcibly moved in the direction of approaching each other, and the longitudinal direction of their joint ends. When the end faces are pressed against each other, and when the press contact is complete, above the widening vertical groove The upper end of the driving wedge that is still protruding and the lower end that is below the widening vertical groove and that protrudes from the through hole of the bottom plate are cut and removed; It is mounted on the upper surface of the joint end portion of the beam in a state in which a gap corresponding to the step s is formed between the upper end surface of the core plate and the upper end surface of the core plate, and is tightly fixed to the upper end surface of the core plate with a screw. Beam connection structure for wooden buildings.