JP2002004423A - Washer for connecting metal fitting for building timber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washer for a connecting metal fitting for building timber, disposed inside the folded-back contact part of the connecting member to securely fasten connecting bolts in place with stability and also to position the connecting fitting while showing the effect of preventing a backlash. SOLUTION: The connecting fitting 4 connects building timber 1 to connecting timber 3 at right angles to each other or in tilted positions, the connecting timber having a connection 2 provided at its end. A connection 4B for connection to the connection 2 of the connecting timber 3 is provided at the folded free end of a fitting body 4A formed by folding back a plate. The folded-back contact part 4C which abuts on the building timber 1 is provided at the opposite folded part. A washer body 9 having a communicating hole which communicates with a bolt hole 7 is disposed inside the folded-back contact part 4C of the connecting fitting 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer used as a connection fitting for connecting, for example, a beam of wood to a pillar of wood at right angles or in an inclined state.

[0002]

2. Description of the Related Art
For example, as shown in FIG. 1, the connecting metal fittings of this type include free ends of a metal fitting body 4A formed by bending a plate material into a U-shaped cross section as shown in FIG. Is provided with a joint connecting portion 4B which is joined and connected to a joint portion 2 provided at an end of the connecting wood 3 such as a beam, for example. There is a U-shaped metal fitting provided with a folded contact portion 4C for contacting the timber and a bolt hole 7 for inserting a connecting bolt 6 penetrating through the folded contact portion 4C from the side surface of the timber 1 for construction. .

[0003] The construction method using the connection fitting 4 will be briefly described. For example, a plurality of connection bolts 6 are penetrated between opposing side surfaces of the timber for construction 1, and the connection bolt 6 is attached to one side of the timber 1 for construction. By projecting a plurality of tips, and passing the projecting tips of the connection bolts 6 through the bolt holes 7 and screwing nuts 12 to the projecting tips, the folded contact portions 4C are formed.
Is fixed to the side surface of the timber 1 for building with the abutment on one side, and a locking rod erected on the connection 4 at the connection 4B of the fixed connection 4. 13 is connected, and the connection state is fixed by a fixing rod 14 or a fixing bolt and a nut, thereby connecting the building wood 1 and the connection wood 3 at a right angle. According to the construction method, there is a merit that a connection process to wood can be simplified, a standard can be standardized, and a construction work can be simplified, which is very popular.

However, when a load is applied in the direction in which the connecting timber connected to the building timber is pulled, the connecting fitting is also pulled by the pulling force, and the connecting fitting is originally U-shaped in cross section. However, the folded back contact portion of the connecting fitting is extended and gradually deformed into a shape close to a U-shape, which may deform the shaft assembly.

In order to prevent this problem, it is conceivable to increase the strength of the folded contact portion by increasing the thickness of the plate material. However, if the thickness is too large, the cost is increased, the processing is not easy, and the weight is reduced. It becomes difficult to construct because it becomes large.

On the other hand, in order to solve such a problem, the present applicant has formed a folded contact portion of a connecting fitting into a shape (for example, a U-shaped cross section) assuming deformation in advance as shown in FIG. By doing so, even if a pulling force is applied to the connecting timber connected to the building timber, the connecting fitting is unlikely to undergo further deformation, making it significantly more durable than the aforementioned U-shaped connecting fitting The inventors of the present invention have invented a deformable connection fitting having a U-shaped cross section, which exerts strength and is extremely easy to put into practical use (Japanese Patent Application No. 11-217275).

[0007] Even in this case, it is desirable to suppress further deformation of the folded contact portion as much as possible.

On the other hand, in order to position the connection fitting or to prevent backlash, the periphery of a bolt hole provided in the folded contact portion is squeezed and protruded, or the projection of the hole edge is formed by pressing and protruding to provide a dowel. There has also been proposed a configuration in which a protrusion provided at a folded contact portion of the connection fitting is engaged with an engagement recess (zabori) provided at an opening of a bolt insertion hole of the timber for construction.

In other words, the connection fitting can be fixed to the side surface of the wood by abutting the folded contact portion in a state where the projection and the engagement recess are engaged, so that the connection fitting is positioned by this. As a result, the construction is easy, and the backlash is prevented and the strength is improved.

[0010] However, when the conventional protruding portion is formed by narrowing the folded contact portion as described above, for example,
Although it can form a protrusion of the required size and protrusion height,
Since the plate thickness of the protrusion becomes thin and the strength is remarkably deteriorated, the deformation strength against the tensile load is remarkably deteriorated as described above.

Further, when the projection is formed by raising the edge of the hole by pressing, the thickness of the projection is not reduced, but the height of the projection is limited in processing and a sufficient projection height cannot be secured. Therefore, in many cases, neither the positioning effect nor the rattling prevention effect due to the engagement of the projections is sufficiently exhibited.

The present invention has found the above problems,
In order to solve these problems, by disposing the washer inside the folded contact part of the connection fitting, not only can the screwing of the connecting bolt be stably and firmly performed, but also the folded contact part against the tensile load by this washer. In addition to suppressing the deformation of the washer, the durability can be significantly improved, and the washer can be positioned by providing the washer with the protruding portion and fitting it into a bolt hole and protruding outward. ,
By engaging this projection with the engagement recess at the mouth of the bolt insertion hole, the positioning action of the connection fitting and the effect of preventing backlash can be exhibited, and this projection uses a washer as described above. An extremely excellent connecting piece of architectural timber that can easily secure a sufficient protruding height and improve the strength of the connecting piece without deteriorating the deformation strength of the folded contact portion itself. It is intended to provide washers for use.

[0013]

The gist of the present invention will be described with reference to the accompanying drawings.

A connecting metal fitting 4 for connecting an architectural wood 1 and a connecting wood 3 having a connection part 2 at an end thereof at a right angle or an inclined state, wherein the metal body is formed by folding a plate material in a folded shape. A connection connecting portion 4B for connecting to the connection portion 2 of the connecting lumber 3 is provided on the folded free end side of 4A, and a folded abutting portion 4C for abutting on the building timber 1 is provided on the opposite folded portion.
And a washer for use in a connection fitting 4 provided with a bolt hole 7 through which a connection bolt 6 is inserted through a bolt insertion hole 5 provided in the building timber 1, wherein the connection fitting 4 is folded and abutted. The protruding portion 10A is protruded outward by fitting the bolt hole 7 into the washer main body 9 having a communication hole 8 which is provided in contact with the inside of the portion 4C and communicates with the bolt hole 7. Engagement recess formed in the mouth of
11 is a sectional view of a building timber having a configuration in which a locking cylinder portion 10 having a communication inner hole 8 that engages with the communication hole 8 and communicates with the bolt insertion hole 5 protrudes. The present invention relates to a washer for a connection fitting.

[0015] Further, the locking cylinder portion 10 is formed integrally with the washer body 9 so as to protrude therefrom by integral molding.
It relates to the washer for connecting metal fittings of the described building timber.

The washer body 9 has a width dimension substantially matching the inner width of the folded contact portion 4C of the connection fitting 4, and the washer body 9 is engaged and abutted inside the folded contact portion 4C. At the same time, the locking cylinder portion 10 protruding from the washer body 9 is configured to fit into the bolt hole 7 provided in the folded contact portion 4C and protrude outward. The present invention relates to the washer for connecting metal fittings for building timber according to any one of Items 1 and 2.

Further, the shape of the front portion of the washer body 9 which is the base of the locking cylinder portion 10 is set so as to be in contact with the inner surface of the folded contact portion 4C of the connection fitting 4. The washer for connecting metal fittings for architectural wood according to any one of claims 1 to 3.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment (how to carry out the invention) of the present invention, which is considered to be the best, will be briefly described with reference to the drawings, showing its operational effects.

The washer body 9 is brought into contact with the inside of the folded-back contact portion 4C of the connection fitting 4, and a locking cylinder 10 projecting from the washer body 9 is provided with a bolt hole 7 formed in the folded-back contact portion 4C.
Fits.

The washer body 9 is positioned by fitting the locking cylinder portion 10 into the bolt hole 7, so that the washer body 9 is positioned.
Can be easily arranged inside the folded contact portion 4C, and by setting the protruding length of the locking tube portion 10 to an appropriate length, the bent cylindrical portion 10 is outwardly extended from the folded contact portion 4C via the bolt hole 7. The protruding height of the protruding protruding portion 10A can be formed to a sufficient height.

That is, the locking cylinder 10 protruding from the bolt hole 7
Can be sufficiently engaged with the engaging recess 11 having a sufficient depth provided at the mouth of the bolt insertion hole 5 of the timber for building 1. Since the connection fitting 4 is positioned by the engagement with 11, the construction is easy, and the connection fitting 4 can be fixed to the building timber 1 without rattling.

In addition, since the locking cylinder portion 10 projects from the washer body 9 instead of processing the folded contact portion 4C, the locking cylinder portion 10 can be made sufficiently thick and sufficiently strong. In order to reliably exert the function and effect, the protrusion length (projection height) can be set so as to sufficiently engage with the engagement concave portion 11.

Accordingly, a sufficient protruding height can be easily secured without deteriorating the deformation strength of the folded contact portion itself, and the mass productivity can be greatly improved.

Further, by disposing the washer inside the folded contact portion 4C, not only can the screwing of the connecting bolt 6 be stably and firmly made, but also the washer body 9 can be fixed according to the shape of the folded contact portion 4C. By setting the shape, even if the folded contact portion 4C is not flat and has a U-shape or the like, it can be screwed firmly and stably.

In addition to the original operation and effect of the washer, a washer is further arranged inside the folded contact portion 4C so that a pulling load is applied to the connecting lumber 3 with respect to the building lumber 1. Since the deformation strength of the washer body 9 is large, the tensile deformation of the folded contact portion 4C can be suppressed, and the deformation strength of the folded contact portion 4C is significantly improved.

Therefore, the protrusion (locking cylinder portion 10) having sufficient strength and a sufficient projection length can be easily formed, is excellent in mass productivity, and has a locking cylinder portion provided on the washer. Ten
The washer itself is easy to dispose, and the washer can also improve or improve the deformation strength of the folded contact portion 4C of the connection fitting 4, and by providing the washer, the above-mentioned extremely innovative action and effect can be exhibited. Is done.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

The first embodiment shown in FIGS. 1 to 5 is a type which is used for a connection fitting 4 in which a plate material is bent into a U-shape in cross section. A connection part 2 provided at an end of a connecting lumber 3 such as a beam at both ends of a free side.
Is provided with a joint connecting portion 4B for joining and connecting the flat connecting portion 4B to the other side, and a flat folded portion on the opposite side is a folded contact portion 4C which abuts on a side surface of the building timber 1 such as a pillar, for example. It is used for a U-shaped connecting metal fitting 4 provided with a bolt hole 7 through which a connecting bolt 6 that penetrates and projects from the side surface of the timber 1 is used. A brief description of the method of using the connecting metal fittings 4 is as follows. For example, a plurality of connecting bolts 6 are passed through the bolt insertion holes 5 between the opposing side surfaces of the building timber 1,
A plurality of ends of the connecting bolts 6 are protruded from one side surface of the building timber 1, the projecting ends of the connecting bolts 6 penetrate through the bolt holes 7, and further, communication of washers disposed inside the contact portion 4 </ b> C. By penetrating through the hole 8 and screwing a nut 12 onto the protruding tip, the folded-back contact portion 4C is brought into contact with this one side surface, and the connecting fitting 4 is fixed to the side surface of the building timber 1; Then, a locking rod 13 erected on the connection part 4 is connected to the connection part 4B of the fixed connection fitting 4 and the connection state is fixed by the fixing rod 14, whereby the building wood 1 and the connection wood are connected. 3 is connected at a right angle.

The first embodiment is a washer used for such a connecting metal fitting 4 having a U-shaped cross section. The washer is provided inside the folded abutting portion 4C of the connecting metal fitting 4, and the bolt hole 7 is provided. The protruding portion 10A is protruded outward by fitting into the bolt hole 7 into a washer body 9 having a communication hole 8 communicating with the protruding portion 10A.
Engages with the engaging recess 11 formed at the mouth of the bolt insertion hole 5, and functions as the communication hole 8, and has the locking cylinder portion 10 having the communication inner hole 8 communicating with the bolt insertion hole 5. It has a protruding configuration.

In this embodiment, the locking cylinder 10 is formed integrally with the washer body 9 so as to protrude therefrom.

The washer body 9 has a width dimension substantially matching the inner width of the flat folded contact portion 4C of the connection fitting 4, and the washer body 9 engages and abuts inside the contact portion 4C. The locking cylinder 10 protruding from the washer body 9 is formed into a cylindrical shape that fits into the bolt hole 7 provided in the folded contact portion 4C.

Further, the shape of the front portion of the washer body 9 which is the base of the locking cylinder portion 10 is set to a shape which comes into contact with the inner surface of the folded contact portion 4C of the connection fitting 4. In the embodiment, since the contact portion 4C is a flat surface, the washer body 9
The front portion of the washer also has a flat shape.
Are integrally formed.

In the second embodiment shown in FIGS. 6 to 10, the folded contact portion of the connecting fitting is formed in a shape (for example, a U-shaped cross section) in which deformation is assumed in advance. Even if a pulling force is applied to the connecting lumber 3 connected to the wood 1, the connecting bracket is less likely to be deformed further, and exhibits a remarkably durable deformation strength as compared with the above-mentioned U-shaped connecting bracket. In addition, it is configured to be used for the connecting bracket 4 having a U-shaped cross section, which is extremely easy to put into practical use.

Also in the second embodiment, the washer body 9 has a width substantially matching the inner width of the flat folded contact portion 4C of the connection fitting 4, and the washer body 9 is formed of the folded contact portion 4C. The shape of the front portion of the washer body 9 is a curved shape which is in contact with the inner surface of the folded contact portion 4C of the connection fitting 4 at the base of the locking cylinder portion 10. Is set to

In each of the embodiments, unnecessary portions of the washer are eliminated to reduce material costs and reduce weight.

Further, the base of the locking cylinder 10 is made slightly larger in diameter so that it can be driven into the bolt hole 7 of the connecting fitting 4 and locked, so that a washer can be attached to the connecting fitting 4 in advance.

[0037]

Since the present invention is constructed as described above, by disposing the washer inside the folded contact portion of the connection fitting, not only can the screwing of the connection bolt be stably and firmly performed, but also this arrangement can be achieved. The washer can suppress the deformation of the folded contact portion against the tensile load and significantly improve the durability, and the washer is provided with the protruding portion, which is fitted into a bolt hole and protrudes outward. In addition, the washer can be positioned, and by engaging this protruding portion with the engaging concave portion of the opening of the bolt insertion hole, it is possible to exhibit the effect of positioning the connection fitting and preventing rattling. Since the protruding portion is provided by using the washer as described above, a sufficient protruding height can be easily secured without deteriorating the deformation strength of the folded contact portion itself, and the strength of the connection fitting can be improved. It can become a consolidated metal washer of extremely Xiu the construction timber.

According to the second aspect of the present invention, since the locking cylinder is formed by integral molding, a projection having a sufficient projection height can be easily formed, the mass productivity is improved, and the practicality is improved. Excellent washer for connecting metal fittings.

According to the third aspect of the present invention, the effect of enhancing the deformation strength by reinforcing the folded contact portion is further improved, and the washer for connecting metal fittings is extremely excellent.

According to the fourth aspect of the present invention, since the connecting portion can be stably contacted with the folded contact portion, the connection bolt can be easily screwed and firmly performed, and the effect of improving the deformation strength is further improved. It becomes a washer for connecting metal fittings for construction wood.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment.

FIG. 2 is an enlarged explanatory perspective view of a main part of the first embodiment.

FIG. 3 is an enlarged explanatory plan sectional view of a main part of the first embodiment.

FIG. 4 is a perspective view of the first embodiment.

FIG. 5 is an explanatory perspective view showing an engagement recess of the first embodiment.

FIG. 6 is an exploded perspective view of the second embodiment.

FIG. 7 is an enlarged explanatory perspective view of a main part of a second embodiment.

FIG. 8 is an enlarged explanatory plan sectional view of a main part of a second embodiment.

FIG. 9 is a perspective view of a second embodiment.

FIG. 10 is a perspective view of the second embodiment in a direction different from that of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building member 2 Connection part 3 Connection wood 4 Connection metal fitting 4A Metal fitting body 4B Connection connection part 4C Contact part 5 Insertion hole 6 Connection bolt 7 Bolt hole 8 Communication hole 9 Washer main body 10 Lock cylinder part 10A Projection part 11 Lock recess

 ──────────────────────────────────────────────────続 き Continued from the front page F term (reference) 2E125 AA04 AA14 AB12 AC23 AG03 AG04 AG12 AG23 AG56 AG59 BB13 BB22 BB25 BB36 BC02 BD01 BE07 BE08 BF03 CA05 CA09 CA13 CA14 CA79 EA01 EA14 EA33 EB02 3J001 FA07 GA10 GC21 HA04 JA08 KA14 AA09 BA20 BC03

Claims (4)

[Claims] 1. A connecting metal fitting for connecting a building wood and a connecting wood provided with a connection portion at an end thereof at a right angle or an inclined state, wherein the metal fitting body is formed by bending a plate material in a folded shape. On the free end side, a connection connecting portion for connecting to the connection portion of the connecting wood is provided, and the opposite folded portion is provided with a folded contact portion that is in contact with the building wood, and provided on the building wood. A washer for use in a connection fitting provided with a bolt hole through which a connection bolt to be inserted through the bolt insertion hole is provided, wherein the communication hole is provided inside the folded contact portion of the connection fitting and communicates with the bolt hole. By fitting into the bolt hole, the protrusion projects outwardly, and the projected portion engages with an engaging recess formed at the mouth of the bolt insertion hole, and functions as the communication hole. Connection that communicates with the insertion hole A washer for connecting metal fittings for architectural wood, wherein a locking cylinder portion having a through hole is provided in a protruding manner. 2. The washer for connecting metal fittings for architectural wood according to claim 1, wherein said locking cylinder portion is formed so as to protrude from said washer body by integral molding. 3. The washer body has a width dimension substantially matching the inner width of the folded abutment portion of the connection fitting, and the washer body is engaged and abutted inside the folded abutment portion, and the washer body is formed. 4. The structure according to claim 1, wherein the locking cylinder portion protruding from the front end is formed into a shape that fits into the bolt hole provided in the folded contact portion and protrudes outward. A washer for connecting metal fittings for architectural timber according to (1). 4. The base portion of the locking cylinder portion, wherein a shape of a front portion of the washer main body is set to a shape that comes into contact with an inner surface of the folded contact portion of the connection fitting. The washer for connecting metal fittings for building wood according to any one of claims 1 to 3.