JP2002021238A - Coupling structure for steel sleeper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rigidly couple a steel sleeper to a metallic strut through one-touch operation, to thereby construct a robust floor structure. SOLUTION: The metallic strut 10 is constructed by attaching a sleeper accepting plate 12 at an upper edge of a bearing bolt 11 erected from the ground, cutting and raising bearing pieces 12c from central portions of the sleeper accepting plate 12 on both sides thereof, and raising binding projections 12e from both opposed edges on the other sides. The sleeper accepting plate 12 has bent portions 12a, and a plate spring 13 is formed of an engaging piece 13c and a guide piece 13d via a narrow-width elastically deforming portion 13b. Then, each binding projection 12e of the spring plate 13 is fixed to the corresponding bent portion 12a of the sleeper accepting plate 12. When the metallic strut 10 is inserted into the steel sleeper 20 having an opening 25 in its bottom surface and having a rectangular hollow shape in cross section, seating sides 21R and 21L are fitted into gaps between the bearing pieces 12c and the binding projections 12e, respectively, and each engaging side 23 of the steel sleeper 20 engages with the corresponding engaging portion 13d, to thereby couple the steel sleeper 20 to the metallic strut 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large steel connecting structure used for constructing a lower part of a building such as a house.

[0002]

2. Description of the Related Art In a building such as a house, a floor structure in which a floor panel is provided over a concrete foundation is employed. For example, as shown in FIG. 1, a concrete foundation 1 is erected from the ground GL on which concrete or the like is cast, and a floor panel 2 is inserted between the adjacent concrete foundations 1 and 1. The floor panel 2 is composed of a large scale 4 supported by a bundle 3
Is fixed with a fixing metal such as a nail or a screw. As the large-scale pulling 4, steel large-scale pulling has begun to be used in place of conventionally used wood. Steel pulling eliminates the drawbacks of wooden pulling, in which deformation such as warping and twisting is likely to occur due to drying shrinkage, and is excellent in dimensional stability.

In order to facilitate the attachment of the steel puller to the bundle, Japanese Patent Application Laid-Open No. 9-217452 discloses an engaging recess provided on the side surface of the steel puller, and an engaging piece caught by the engaging recess. Bundles with are introduced.

[0004] As shown in FIG. 2A, a receiving bracket 3d is fixed to a supporting bolt 3b rising from an installation plate 3a via a turnbuckle 3c. An erecting piece 3f is provided on both sides of the receiving metal fitting 3d with a space 3e in which the steel puller 6 can enter, and a notch is formed in a part of the erecting piece 3f to protrude toward the housing space 3e. And Engagement projections 6a that engage with the locking pieces 3g protrude from both lower sides of the steel puller 6 connected to the bundle 3. When the steel puller 6 is connected to the bundle 3, the steel puller 6 is pushed into the accommodation space 3 e of the bundle 3 from above.
The upright piece 3f is elastically deformed and opens to both sides, and the upright piece 3f is elastically restored when the engaging projection 6a passes over the locking piece 3g. As a result, as shown in FIG. 2B, the steel puller 6 is connected to the bundle 3 by the engagement between the locking pieces 3g and the engaging projections 6a.

[0005]

In the engagement by the method shown in FIG. 2, the elastic deformation of the locking piece 3g protruding from the upstanding piece 3f to the accommodation space 3e is used only for the engagement force, so that the connection strength is increased. Weak joint structure. In addition, standing piece 3f
When is opened outward, the bottom 3h of the storage space 3e is deformed upward, so that the elastic restoring force effective for the connection strength is further reduced. Further, a restraining force against the steel puller 6 being displaced in the longitudinal direction in the accommodation space 3e cannot be expected much. The present invention has been devised to solve such a problem, and a strong floor structure is adopted by adopting a structure in which a steel puller and a bundled metal are firmly connected by a one-touch method. The purpose is to build with good workability.

[0006]

SUMMARY OF THE INVENTION In order to achieve the object, a connecting structure of the present invention includes a bundled metal piece and a steel puller which can be connected by a one-touch method. The bundle has a large support plate fixed to the upper end of a support bolt rising from the ground. The large receiving plate is formed by bending the opposing edges diagonally downward to form a bent portion, and a support piece is cut and raised from the seating surface at a position substantially corresponding to the center of the bent portion, and the center of the other opposing edges is bent upward. To form a restraining projection. A fixing portion of a large receiving plate is fixed to the bent portion via a narrow elastically deforming portion, and a fixing portion of a leaf spring on which a locking piece and a guide piece are formed.

The steel puller connected to the bundle has a substantially rectangular hollow cross section with an open bottom, and is placed on the upper surface of the puller plate between the fixed portion of the leaf spring and the restraining projections on both sides. The guided side rises from the inside of the seating side at the same inclination angle as the guide portion of the leaf spring, and the end of the guided side is bent at an acute angle to become an engagement piece, and rises vertically upward from the inside of the seating side. Has side walls. When the seating side of the large steel plate comes into contact with the large receiving plate, the lower part of the side wall of the large steel plate is sandwiched between the restraining projection of the large receiving plate and the support piece, and the leaf spring is locked to the guided side. When the pieces come into surface contact and mesh with each other, the steel puller is connected to the bundle.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3 (a), for example, as shown in FIG. 3 (a), a large receiving plate 12 is fixed to the upper end of a support bolt 11 by welding or the like. The pull 20 is supported. As the support bolt 11, a bolt provided with a height adjusting mechanism such as a turnbuckle is used as in the related art. Both sides of the large receiving plate 12 are bent portions 12 bent obliquely downward at an inclination angle α (FIG. 3B).
a, 12a, and a leaf spring 13 is fixed to the outer surface of the bent portions 12a, 12a. The support piece 1 cut and raised from the seating surface 12b is provided substantially at the center of the bent portion 12a.
2c and 12c stand up diagonally. When one or a plurality of ribs 12d, 12d extending from one bent portion 12a toward the other bent portion 12a are formed on the seating surface 12b, the rigidity of the large receiving plate 12 is improved, and bending deformation is prevented. The center of the edge of the seating surface 12b is bent upward to hold the steel puller 20 from the inside.
e, 12e are formed.

The leaf spring 13 fixed to the bent portion 12a is
The elastically deformable portion 13 having a narrow width from the wide fixing portion 13a
After b, the locking piece 13c is bent inward, and the locking piece 13c is further bent outward to form the guide piece 13d. The leaf spring 13 includes the fixing portion 13a and the locking piece 13
Since the interval 13 between c has substantially the same width and the elastically deformable portion 13b is narrow, when the force for expanding the leaf spring 13 is applied, the elastically deformable portion 13b is elastically deformed to the side only with the fixing portion 13a as a starting point. Deform. Elastic deformation portion 13b and locking piece 13c
(FIG. 3b) is set to be less than the inclination angle α in order to incline the locking piece 13c downward toward the center of the seating surface 12b. Locking piece 13c and guide piece 13
is set to be an acute angle so that the guide piece 13d is widened upward.

A steel puller 20 connected to a bundle 10
Is manufactured by forming a steel plate on a rectangular end face having an open bottom. Seating pieces 21R, 21 seated on the seating surface 12b of the large receiving plate 12 are provided below the steel large pulling plate 20.
L, the guided pieces 22, 22 are bent obliquely upward, and the side ends of the guided pieces 22, 22 are further bent to form the engaging pieces 2.
3, 23 are formed. An opening 25 into which the restraining projection 12e fits is formed between the side walls 24, 24. The angle between the seating piece 21R and the guided piece 22 depends on the seating surface 12b.
It is preferable that the angle be smaller than the angle (α−β + γ) between the guide piece 13d and the guide piece 13d. Thereby, when the steel puller 20 is pushed between the pair of leaf springs 13, 13, the guided piece 22 pushes and expands the leaf springs 13, 13.
It is guided by 3d and moves downward. The engagement piece 23 is provided on the seating surface 1 in order to bring the locking piece 13c in the locked state into surface contact.
It is inclined at an angle equal to the angle (α-β) between 2b and the locking piece 13c.

When the steel puller 20 is pushed from above between the leaf springs 13 as shown by arrows in FIG. 3 (a), the guided pieces 22 and 22 guide the guide pieces 13d and 13d of the leaf springs 13 and 13.
The seating pieces 21R, 21L descend while pushing and expanding 13d. When the seating piece 21R reaches the seating surface 12b, the leading ends of the locking pieces 13c, 13c ride over the guided pieces 22, 22, and the plate springs 13, 13 are elastically restored in a direction in which they are narrowed to each other. As a result, the engaging piece 13c meshes with the engaging piece 23 in a surface contact state, and the contact surface between the engaging piece 23 and the engaging piece 13c is inclined downward toward the center of the large receiving plate 12. The steel puller 20 is firmly connected to the bundle 10. FIG. 3C is a cross-sectional view of the state in which the steel puller 20 is connected to the bundled metal piece 10 in the longitudinal direction of the steel puller 20 as viewed from a direction perpendicular to the steel puller 20. FIG. 3 (d) shows a side view.

As a connecting procedure, it is possible to fit a steel puller 20 into a bundled metal object 10 erected on the ground GL, but the bundled metal member 1 having a height adjusting function such as a turnbuckle is provided.
0 is fitted into the steel puller 20 in advance, and a method of standing on the ground GL is excellent in workability.

In this manner, the steel puller 20 is connected to the bundled metal 10 without rattling by the engagement between the locking portion 13d and the locking side 23. Even if an upward force is applied to the steel puller 20 attached to the bundle 10, the seating side 21
R, 21L, the guided sides 22, 22, and the lower portions of the side walls 24, 24 are the seating surface 12b, the support pieces 12c, and the restraining projections 12e.
13d and the locking side 2
3 is not released. Moreover, since the locking portion 13 d and the locking side 23 are in surface contact with the central portion of the large receiving plate 12 at a downward inclination angle α, the steel
Is firmly connected to the bundle 10. Further, even when the steel puller 20 is fitted into the bundled metal piece 10, even if the positional relationship is slightly shifted, excessive deformation of the leaf spring 13 is regulated by the support piece 12 c, so that deformation of the leaf spring 13 is also prevented, and The elastic locking force of the spring 13 is effectively used.

After fixing the bundle 10 in a predetermined positional relationship along the longitudinal direction of the steel puller 20, the bundle 10 is connected to a support bolt 11 (FIG. 2) standing upright from the ground GL. The floor panel 2 (FIG. 1) is arranged on the upper surface 26 of the steel puller 20 to construct a solid floor structure. At this time, since the steel puller 20 is connected to the bundled metal piece 10 by a one-touch method of merely fitting the steel puller 20 into the large receiving plate 12,
Workability is also greatly improved.

[0015]

As described above, the connecting structure of the present invention employs a method in which the engaging side formed on the spring portion of the bundled metal piece and the engaging side of the large steel puller are engaged in surface contact. And
The lower part of the connected steel puller is held by a large support plate, so that the steel puller is firmly connected to the bundle without releasing the meshing state, and the pulling force in the vertical direction and the longitudinal A connection structure that is resistant to displacement along the direction is obtained. Moreover, since the steel pulling is connected by a one-touch operation of inserting the steel pulling between the leaf spring and the support piece, the workability is remarkably improved. When floor joists are laid with the joists on the steel puller attached in this way, a solid floor structure is easily constructed.

[Brief description of the drawings]

Fig. 1 Schematic of floor structure

Fig. 2 Conventional structure for connecting a steel puller to a bundle

3A and 3B are diagrams illustrating a connection structure according to the present invention, in which a perspective view of a bundled metal member 10 and a steel puller 20 is shown (a), and a sectional view of a leaf spring 13 fixed to the bundled metal member 10 (b). , Sectional view (c) and side view (d) showing the connected state

[Explanation of symbols]

10: bundled metal 11: support bolt 12: large receiving plate 12a: bent portion 12b: seating surface 12c: support piece 12d: rib
12e: Restraining projection 13: Leaf spring 13a: Fixed part 13b: Elastic deformation part 13c: Locking piece 13d: Guide piece 20: Large steel pull 21R, 21L: Seating side 2
2: Guided side 23: Engagement piece 24: Side wall 2
5: Opening α: Inclination angle of the locking portion of the leaf spring and the locking side of the steel puller β: Angle between the elastically deforming portion of the leaf spring and the locking piece γ: With the locking piece of the leaf spring Angle between guide piece

Continued on the front page (72) Inventor Kaoru Kamishin 3-4-1 Marunouchi, Chiyoda-ku, Tokyo Nisshin Steel Corporation (72) Inventor Satoshi Shibata 3-4-1 Marunouchi, Chiyoda-ku, Tokyo Nisshin Steel (72) Inventor Yasuhiro Yoda 32 Wadai, Tsukuba, Ibaraki Sekisui Chemical Co., Ltd. Inside (72) Inventor Kazushi Makita 32 Wadai, Tsukuba, Ibaraki Sekisui Chemical Co., Ltd. F-term (reference) 2E125 AA10 AA19 AB10 AB13 AC14 AC15 AC18 AG03 AG41 BB01 BB09 BB29 BB31 BC02 BC09 BD01 BE08 BF01 CA56 CA63 EA05 EA16 EA33

Claims (1)

[Claims] 1. An opposite edge is bent obliquely downward to form a bent portion, a support piece is cut and raised from a seating surface at a position substantially corresponding to the center of the bent portion, and the center of another opposite edge is bent upward. A large receiving plate as a restraining projection is fixed to an upper end of a support bolt rising from the ground, and a fixing portion of a leaf spring having a locking piece and a guide piece formed through a narrow elastic deformation portion is provided on the large receiving plate. It has a substantially rectangular hollow cross-section with an open bottom, and a bundled metal fixed to the restraining projection. From the inside of the seating side placed on the upper surface of the large receiving plate between the securing part of the leaf spring and the restraining projections on both sides. The guided side rises at the same inclination angle as the guide portion of the leaf spring, and the end of the guided side is bent at an acute angle to become an engagement piece, and is made of steel having a side wall rising vertically upward from the inside of the seating side. With large pull, steel large on the large support plate When Kino seating edges are in contact,
The large steel connection is characterized in that the lower part of the side wall of the steel large pulling is sandwiched between the restraining projection of the large receiving plate and the supporting piece, and the locking piece of the leaf spring is in surface contact and meshes with the guided side. Construction.