JP5425657B2 - Steel frame connection bracket - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a steel frame connecting bracket used for connecting lip groove steels or connecting lip groove steels to other steel materials.

  Conventionally, L-shaped metal fittings have been widely used for the connection of lip groove steels and the connection between lip groove steels and other steel materials. For example, the L-shaped metal fittings are attached to portions where the lip groove steels are orthogonal to each other, and the lip groove steels are connected to each other by tightening nuts through bolts to the attachment portions. However, according to the connection structure of such L-shaped fittings and bolts and nuts, the connecting operation is easy, but the displacement and movement between the L-shaped fittings and the two lip groove steels are completely eliminated. There is an inconvenience that it cannot be lost. In addition, even after the nut (or bolt) is tightened, there is an inconvenience such as movement of the L-shaped bracket.

  On the other hand, for example, Patent Document 1 discloses a steel frame connecting structure in which lip channel steels are butted vertically and connected so as not to be displaced. In this steel frame connection structure, as shown in FIG. 13, the intersecting portions of the aggregates are connected using an L-shaped bracket 51 formed by bending a steel material. In this L-shaped metal fitting 51, one bent piece 51a is fixed to a predetermined position of the lip groove steel 52 by welding 54, and the other bent piece 51b is fixed to the lip groove steel 55 with a bolt 53. According to this, since the bent piece 51a of the L-shaped metal fitting 51 and the lip groove steel 52 are fixed by welding, there is no positional shift or movement between them.

JP 2000-291159 A

  However, in such a conventional steel frame connection structure, the connecting metal fitting 51 turns its hand to the back side of the lip groove steel 55 when fixing the bent piece 51b bent in an L shape with the bolt 53. The work becomes complicated because a not-shown paddle and nut must be arranged. Further, since the bent piece 51a is fixed to the lip groove steel 52 by welding, there is a problem that distortion occurs and the position cannot be easily changed.

  Further, in welding work, sparks during welding enter the eyes through an optical filter (light-shielding plate) and adversely affect the eyes of surrounding workers who are not wearing the optical filter. Further, the lip groove steel is plated on the surface to prevent rust, and the plating effect is lost by the welding, and rust is easily generated in the vicinity of the welded portion. Furthermore, after bringing equipment such as a welding machine into the assembly site of the steel frame, a welding specialist must work, which not only results in poor assembly work efficiency but also increases the work cost. there were.

  The present invention has been made in view of the above-mentioned circumstances, and its purpose is to eliminate the welding work by a skilled worker, and it is easy, sure and efficient even with a general assembly workman. An object of the present invention is to provide a steel frame connection fitting that enables connection and connection between a lip channel steel and another steel material.

  In order to achieve the above-described object, a steel frame connection bracket according to the present invention is a steel frame connection bracket used for connection between lip groove type steels or between a lip groove type steel and another steel material. A vertical piece formed by bending an L-shape in the longitudinal direction, a horizontal piece having a smaller size in the width direction than the vertical piece, and a bent part in which the vertical piece and the horizontal piece are connected to each other. A lip guide notch corresponding to the lip thickness of the lip groove steel cut into the center line in the width direction of the piece, and a bolt hole formed through each of the vertical piece and the horizontal piece, and the horizontal The lower part of the vertical piece together with the piece is inserted into the lip groove type steel from between a pair of opposed lips of the lip groove type steel and horizontally rotated, so that the lip fits in the lip guide notch, Vertical strip Characterized in that it is erected held on the lip.

  With this configuration, two opposing lips of the lip groove steel fit into the lip guide notches formed at both ends of the bent portion in the width direction. Accordingly, both ends in the width direction of the horizontal piece are in close contact with the lower end of each lip, and the lower surface of the guide groove is in contact with the upper surface of each lip. As a result, the vertical piece can be fixed so as to stand upright with respect to the lip surface without using bolts and nuts or without performing welding. Therefore, the vertical piece does not fall in the lip surface direction. In addition, by fixing the vertical piece to the steel column or the like directly or via an auxiliary member using bolts and nuts, the lip groove steel can be easily or reliably fixed or held on the column. it can.

  Further, the steel frame connection bracket according to the present invention is a steel frame connection bracket used for connection between lip groove steels or between a lip groove steel and another steel material, and a rectangular steel plate is formed in an L shape in the longitudinal direction. The vertical piece and the horizontal piece are formed in a bent vertical part having a short length in the longitudinal direction, a horizontal piece having a smaller size in the width direction than the vertical piece, and a bent part in which the vertical piece and the horizontal piece are continuous. A lip guide notch corresponding to the lip thickness of the lip groove steel, and a bolt hole formed through the horizontal piece, and the vertical piece together with the horizontal piece. The lower part is inserted into the lip groove steel from between a pair of opposed lips of the lip groove steel and horizontally rotated, so that the lip fits in the lip guide notch and the vertical piece is placed on the lip. Held upright And wherein the Rukoto.

  This is useful for applications in which the vertical piece itself is not directly attached to or connected to a steel material such as a support, for example, when attached to a steel material such as a support via an L-shaped auxiliary member. Moreover, the amount of steel material used for the entire steel fitting can be reduced by shortening the vertical piece. Furthermore, the short vertical piece can be used as a positioning member for the auxiliary member, and can be fixed so as to maintain a vertically standing posture with respect to the lip surface of the lip groove steel material.

  According to the present invention, the use of a steel frame connecting bracket having a lip guide notch at the bent portion enables the connection of lip groove steels and the connection work between lip groove steels and other steel materials at the assembly site. The normal assembly work can be carried out easily and efficiently without welding by skilled workers.

  The present invention has been briefly described above. Further, the best mode for carrying out the invention described below will be described with reference to the accompanying drawings.

It is a perspective view which shows the coupling bracket for steel frames by one Embodiment of this invention. FIG. 2 is a front view of the steel frame connection fitting shown in FIG. 1. It is a side view of the connecting fitting for steel frames shown in FIG. It is a front view of the state which attached the coupling metal fitting for steel frames shown in FIG. 1 to the lip groove type steel. It is side surface sectional drawing of the state which attached the connecting metal fitting for steel frames shown in FIG. 1 to the lip groove type steel. It is a top view of the state which attaches the coupling metal fitting for steel frames shown in FIG. 1 to a lip groove type steel. It is a perspective view which shows the coupling bracket for steel frames by other embodiment of this invention. It is a front view which shows the mounting state which connected the lip groove type steel, and the mounting state which connected the lip groove type steel to the support | pillar using the steel-frame connection metal fitting shown in FIG. 1 and FIG. It is a bottom view of the connection state and mounting state which are shown in FIG. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is CC sectional drawing in FIG. It is a perspective view which shows the conventional steel frame connection structure.

Hereinafter, a steel fitting according to an embodiment of the present invention will be described with reference to FIGS. 1 to 12.
1 to 3 are a perspective view, a front view, and a side view of a steel frame connecting bracket according to the present embodiment. As shown in the figure, this steel frame connecting bracket K is composed of a rectangular steel plate bent in an L shape in the longitudinal direction (in the direction of the arrow X in FIG. 3). The piece 2 is configured to be continuous at the bent portion 3. Rust prevention plating is applied to the surface of the steel frame connection fitting K.

  The horizontal piece 2 has a dimension L2 in the width direction smaller than the dimension L1 in the width direction of the vertical piece 1, and the bent portion 3 in which the vertical piece 1 and the horizontal piece 2 are continuous has a width direction thereof. A lip guide notch 4 is formed by cutting from both side edges toward the center line in the width direction of the horizontal piece 1 and the vertical piece 2. The dimensions L1 and L2 are larger than the distance between two opposing lips of a lip groove steel described later. Further, the distance L3 between the two facing lip guide notches 4, 4 is slightly smaller than the distance between the two lips.

  Further, the lip guide notch 4 formed in the bent portion 3 has a notch surface formed on the vertical piece 1 side as shown in the figure when the plate thickness D of the steel fitting K is 4.5 mm. The distance d1 from the top surface of the horizontal piece 2 to 2 mm and the distance d2 from the notch surface formed on the horizontal piece 2 side to the side surface (right side surface) on the vertical piece 1 side are 2 mm. The distances d1 and d2 are slightly larger than the plate thickness of the lip groove steel.

  In the vertical piece 1, one bolt hole 5 is formed at a position symmetrical to the center line in the width direction of the vertical piece 1 and the horizontal piece 2. Similarly, the horizontal piece 2 is also formed with one bolt hole 6 at a position symmetrical to the center line. The number and shape of these bolt holes 5 and 6 can be arbitrarily determined.

  The steel fitting K having such a structure is attached to the lip groove type steel as follows. 4 to 6 show a state in which the steel-frame connection fitting K is attached to the lip groove steel 7. FIG. The lip groove steel 7 has a known channel shape with a substantially C-shaped (or U-shaped) cross section as a whole, and has lips 7a and 7b at both ends in the width direction. These lips 7a and 7b face each other in parallel. In addition, the plate | board thickness of this lip groove type steel 7 consists of a steel plate of 2 mm or less, for example, about 1.9 mm. The surface of the lip groove steel 7 is preliminarily plated for rust prevention.

  First, the steel fitting K is held over the lip groove steel 7 with the lips 7a and 7b facing upward, and held in the state shown by the chain line E in FIG. In addition, only the lower part of the horizontal piece 2 and the vertical piece 1 of the steel frame connecting bracket K is inserted into the lip groove steel 7 from between the lips 7a and 7b. When the upper surface of the horizontal piece 2 is positioned on the lower surface of the lips 7a and 7b, the steel connecting bracket K is horizontally rotated in the direction of arrow H from the position of the chain line E. By this horizontal rotation operation, each lip guide notch 4 in the bent portion 3 is fitted into each one of the facing lips 7a and 7b, and the steel frame fitting K is in a state indicated by a chain line F.

  Here, when the steel fitting K is further rotated horizontally, each lip guide notch 4 is horizontally rotated in the direction of arrow I while being smoothly guided by the lips 7a and 7b. And when the vertical piece 1 becomes the direction orthogonal to the longitudinal direction of the ring groove steel 7, the said horizontal rotation operation is stopped. At this time, the steel frame connection bracket K is in a state indicated by a solid line G. As a result, the upper surfaces of both ends in the width direction of the horizontal piece 2 are supported (abutted) on the lower surfaces of the lips 7a and 7b, and the vertical piece 1 is prevented from falling in the direction opposite to the horizontal piece 2 direction. The Further, the lower surface of the lip guide notch 4 is supported by the upper surfaces of the lips 7a and 7b, so that the vertical piece 1 is prevented from falling in the horizontal piece 2 direction.

  In this case, the fitting between the lip guide notches 4 and 4 and the lips 7a and 7b prevents a large shift in the width direction of the steel frame connecting bracket K with respect to the ring groove steel 7, and suppresses the backlash between them. it can. Since the lip guide notch 4 is in a relation to be fitted to the lips 7a and 7b, the vertical piece 1 is not rotated to the position of the chain line E in FIG. The steel frame connecting bracket K is stably held by the lip groove steel 7.

  FIG. 7 is a perspective view showing another steel frame connection fitting M according to the present embodiment. While the vertical piece 1 of the steel frame connection bracket K itself is used for bolting to other steel materials or the like, the steel frame connection bracket M is a short vertical piece 1A. Therefore, this vertical piece 1A itself is not used for attachment to other steel materials or the like, but functions so as to maintain the strength of the steel fitting F together with the horizontal piece 2 and the bent portion 3. The short vertical piece 1A is also used as an auxiliary member for positioning an L-shaped metal fitting to be described later for attaching the lip groove steel 7A to the support column.

  8 and 9 show the state in which the lip groove steels used as the body edges are connected to each other and the lip groove steel M and other steel materials (for example, columns) by using the above-described steel frame fittings K and M. It is the front view and bottom view which show the state which carried out. 10, FIG. 11 and FIG. 12 are an AA cross-sectional view, a BB cross-sectional view and a CC cross-sectional view in FIG. 9, respectively, specifically showing the structure of the connection. Of these, FIG. 10 shows a state in which the lip groove steel 7A as the trunk edge is attached to the steel material 8 as the support column using the steel fitting M.

  Here, while adjusting the direction on the lip groove steel 7A with the lips 7a and 7b facing upward, in the same manner as described with reference to FIG. 6, the lip groove steel 7A is inserted between the lips 7a and 7b. Only the lower part of the horizontal piece 2 and the vertical piece 1A of the steel fitting F is inserted. When the upper surface of the horizontal piece 2 is positioned on the lower surfaces of the lips 7a and 7b, the steel fitting F is rotated.

  By this turning operation, each lip guide notch 4 in the bent portion 3 is fitted into one lip 7a, 7b facing each other, and the steel fitting M is horizontally guided while being guided by these lips 7a, 7b. Rotate. When the vertical piece 1A is in a direction perpendicular to the longitudinal direction of the ring groove steel 7A, the rotation operation is stopped. Thereby, the vertical piece 1A is supported by the lower surfaces of the lips 7a and 7b at the upper ends of both ends of the horizontal piece 2 in the width direction, and is prevented from falling in the direction opposite to the horizontal piece 2 direction. Further, the lower surface of the lip guide notch 4 is supported by the upper surfaces of the lips 7a and 7b, so that the vertical piece 1A is prevented from falling in the horizontal piece 2 direction.

  Since the lip guide notch 4 is fitted to the lips 7a and 7b, the vertical piece 1A is not dropped from the lip groove steel 7 unless it is rotated in the opposite direction. The connecting metal fitting M is stably held by the lip groove steel 7. That is, when the steel fitting M is rotated in the opposite direction, the steel fitting M can be arbitrarily separated from the lip groove steel 7 and disassembled.

  Next, a separately prepared horizontal piece 9a of an L-shaped metal fitting (auxiliary member) 9 is brought into contact with both lips 7a, 7b at positions corresponding to the horizontal piece 2 of the steel frame connection metal M. Then, a bolt 10 is passed through a bolt hole 6 (not shown) provided in the bolt hole 6 formed in the horizontal piece 2 and the horizontal piece 9a, and a nut 11 is screwed into the tip.

  On the other hand, the vertical piece 9b of the L-shaped metal fitting 9 is brought into contact with one side surface of the steel material 8 as a support, and the vertical piece 9b and the steel material 8 are connected to each other using bolts and nuts (not shown) or as necessary. Connect by welding. As a result, the lip groove steel 7A can be firmly fixed to the steel material 8 without rattling by using the steel fitting F.

  FIG. 11 shows a structure in which two lip groove steels 7B and 7C are attached to a steel material 8. FIG. Here, the lip groove steels 7B and 7C are kept in a horizontal state, the one ends thereof are opposed to each other, and the steel fittings M are attached to the lips 7a and 7b at the respective one end portions by the above-described method and procedure. At this time, the vertical pieces 1A and 1A of the steel frame connection fittings M are directed away from each other. Therefore, the horizontal piece 12a of the wide L-shaped metal fitting 12 is placed on the lips 7a and 7b of the lip groove steels 7B and 7C so as to be interposed between the vertical pieces 1A and 1A.

  Further, the bolt 10 is passed from below the horizontal piece 2 through a bolt hole (not shown) provided in the horizontal piece 2 of each steel frame connection fitting M and the horizontal piece 12a of the L-shaped fitting 12, and protrudes on the horizontal piece 12a. The nut 11 is tightened at the tip of the bolt 10. Further, the vertical piece 12b of the L-shaped metal fitting 12 is fixed to the steel material 8 using bolts and nuts. As a result, the two lip groove steels 7B and 7C can be connected to each other using the two steel fittings M, and can be firmly supported by the steel material 8 such as a support.

  FIG. 12 shows a structure in which a lip groove steel 7C as a body edge is connected to a lip groove steel 7D as a spacer. Here, the steel fitting F as shown in FIG. 7 is attached to one end of the lip groove steel 7C as described above, while the steel fitting F as shown in FIG. 1 is attached to the lip groove steel 7D. Attach in the way described above. Subsequently, the vertical piece 1 of the steel fitting K is placed on the lips 7a and 7b of the lip groove steel 7C. At this time, the upper end edge (the left end edge in the figure) of the vertical piece 1 is brought into contact with the inner side of the vertical piece 1A of the steel fitting M. Then, bolts from the lower part of the horizontal piece 2 are inserted into the respective bolt holes (not shown) of the horizontal piece 2 of the steel frame connecting bracket M and the vertical piece 1 of the steel frame connecting bracket K opposed thereto via lips 7a and 7b. The nut 11 is screwed into the tip of the bolt 10 protruding through the vertical piece 1.

  Furthermore, the contact steel plate 13 is brought into contact with the lips 7a and 7b of the lip groove steel 7D at the portion facing the horizontal piece 2 of the steel frame connection fitting K. Then, the nut 11 is screwed into the tip of the bolt 10 protruding from the contact steel plate 13 through the bolt 10 to the horizontal piece 2 and the contact steel plate 13. Thus, using the steel fittings M and the steel fittings K, the lip groove steel 7C, which is the body edge, can be easily and quickly attached to the lip groove steel 7D as the stud by the fastening members that are bolts and nuts. It becomes possible. 4, 5, and 10 to 12, the lips 7 a and 7 b of the lip groove steels 7 </ b> A to 7 </ b> D are illustrated with the lips 7a and 7 b facing upward. The lips 7a and 7b are mounted downward (upside down).

  As described above, the steel frame connection bracket K of the present embodiment includes a vertical piece 1 formed by bending a rectangular steel plate in an L shape in the longitudinal direction, and a horizontal piece 2 having a smaller size in the width direction than the vertical piece 1. And the thickness of the lips 7a and 7b of the lip groove steel 7 cut into the bent portion 3 where the vertical piece 1 and the horizontal piece 2 are continuous toward the center line of the vertical piece 1 and the horizontal piece 2 in the width direction. A corresponding lip guide notch 4 and bolt holes 5 and 6 penetratingly formed in the vertical piece 1 and the horizontal piece 2 are provided, and the lower part of the vertical piece 1 is opposed to the lip groove steel 7 together with the horizontal piece 2. By inserting into the lip groove steel 7 between the pair of lips 7a and 7b and horizontally rotating, the lips 7a and 7b are fitted into the lip guide notch 4, and the vertical piece 1 is placed on the lips 7a and 7b. The configuration is such that it can be held upright.

  Accordingly, the two opposite lips 7a and 7b of the lip groove steel 7A are fitted into the lip guide notches 4 formed at both ends in the width direction of the bent portion 3 of the steel connection fitting K, and the width of the horizontal piece 2 Both ends in the direction are in close contact with the lower ends of the lips 7a and 7b, and the lower surface of the lip guide notch 4 is in contact with the upper surfaces of the lips 7a and 7b. As a result, the vertical piece 1 maintains a vertically standing posture on the surfaces of the lips 7a and 7b and does not fall down in the direction of the surfaces of the lips 7a and 7b. By fixing the vertical piece 1 to the steel material 8 that is a support column directly or via the auxiliary member 9 using bolts and nuts 10 and 11, the lip groove steel 7 can be fixed to the steel material 8 or the like easily and securely. Can be retained. Further, the two lip groove steels 7B and 7C can be reliably and firmly connected to each other using the two steel frame connection fittings M.

In addition, the steel frame fitting M of the present embodiment is such that the vertical piece 1 is shorter than the horizontal piece 2 in the longitudinal direction of the vertical piece 1 and the horizontal piece 2. This is useful for applications that do not require direct attachment or connection to other steel materials, and the shortening of the size can reduce the amount of steel materials used in the entire steel fitting M. At the same time, the vertical piece 1 can be fixed so as to maintain a vertically standing posture with respect to the lips 7 a and 7 b of the lip groove steel 7.

  The steel frame connection bracket of the present invention has an effect that the connection between the lip groove steels and the connection between the lip groove steels and other steel materials can be easily and efficiently performed. It is useful for steel fittings and the like used for the connection of lip grooves and other steel materials.

  K, M: Steel frame connecting bracket, 1 ... vertical piece, 2 ... horizontal piece, 3 ... bent portion, 4 ... lip guide notch, 5, 6 ... bolt hole, 7, 7A to 7E ... lip groove steel, 7a, 7b ... Lip, 8 ... Steel, 9 ... L-shaped bracket (auxiliary member), 10 ... Bolt, 11 ... Nut, 12 ... L-shaped plate (auxiliary member), 13 ... Placing steel plate

Claims (2)

A steel fitting used for connecting lip groove steels or connecting lip groove steel and other steel materials,
A vertical piece formed by bending a rectangular steel plate into an L shape in the longitudinal direction and a horizontal piece having a smaller size in the width direction than the vertical piece;
A lip guide notch equivalent to the lip thickness of the lip groove steel, cut into the bent portion where the vertical piece and the horizontal piece are continuous, toward the center line in the width direction of the vertical piece and the horizontal piece;
A bolt hole formed through each of the vertical piece and the horizontal piece;
With
The lower part of the vertical piece together with the horizontal piece is inserted into the lip groove type steel between a pair of opposed lips of the lip groove type steel and horizontally rotated, so that the lip fits into the lip guide notch. The steel frame fitting is characterized in that the vertical piece is held upright on the lip. A steel fitting used for connecting lip groove steels or connecting lip groove steel and other steel materials,
A rectangular steel plate is formed by bending it into an L shape in the longitudinal direction, a short vertical piece in the longitudinal direction and a horizontal piece having a smaller size in the width direction than the vertical piece,
A lip guide notch equivalent to the lip thickness of the lip groove steel, cut into the bent portion where the vertical piece and the horizontal piece are continuous, toward the center line in the width direction of the vertical piece and the horizontal piece;
A bolt hole formed through the horizontal piece;
With
The lower part of the vertical piece together with the horizontal piece is inserted into the lip groove type steel between a pair of opposed lips of the lip groove type steel and horizontally rotated, so that the lip fits into the lip guide notch. The steel frame fitting is characterized in that the vertical piece is held upright on the lip.

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