JP3940379B2 - Connecting bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structural steel fitting used in steel construction and the like in construction work.
[0002]
[Prior art]
Conventionally, structural steel materials such as H-shaped steel and rectangular steel pipes have been used in steel construction. Methods for connecting structural steel materials to each other include welding methods and fasteners such as bolts and nuts. There is a method of connecting using the. As a method of using a fastener, a through-hole through which a bolt is directly inserted into a structural steel material is connected by a fastener, or a fastening portion having a through-hole through which a bolt is inserted at an end of the structural steel material There are known ones in which a connecting metal fitting provided with is joined by welding or the like, and a structural steel material is connected by a fastener through a fastening portion of the connecting metal fitting.
[0003]
This connection fitting is a through-hole for abutting the end of the structural steel and welding and joining, and the structural steel provided on the opposite side across the joint to fasten with other structural steel It consists of a fastening part with a hole.
[0004]
The above prior art is naturally performed by those skilled in the art, and the applicant has no particular knowledge of the patent document describing the above prior art at the time of filing of the present application.
[0005]
[Problems to be solved by the invention]
However, in the case of the above-mentioned connecting bracket, when joining the structural steel material and the joint of the connecting bracket by welding, there is nothing to position the positional relationship between the structural steel material and the connecting bracket, and positioning between the two is accurate. As a result, the positions of the through holes provided in the fastening portion of the connecting metal fitting are displaced, and there is a problem that the structural steel materials cannot be connected to each other.
[0006]
In addition, the positioning bracket is injured at the joint of the connecting bracket, and welding is performed after the structural steel is combined with the marking. However, when welding the connecting bracket and the structural steel, In the case where the connecting brackets are large and heavy, the positioning of the markings is a difficult task, and the actual solution has not yet reached a fundamental solution.
[0007]
Therefore, in view of the above situation, the present invention provides a connection fitting that can easily position the positional relationship between the structural steel material and the connection fitting when the connection fitting is joined to the end of the structural steel material. There is.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, the connecting metal fitting according to the present invention is described as follows. “A joint portion that is in contact with an end portion of a structural steel material and is weld-joined, and the structural steel material is opposite to the joint portion. In the connecting bracket comprising a fastening portion connected to another structural steel material, at least two positioning protrusions for positioning in two orthogonal directions in the direction perpendicular to the axis of the structural steel material are formed in the joint portion. And the positioning projection is provided at a position where the structural steel material can be positioned relative to the joint by moving in the direction perpendicular to the axis thereof, and the structural steel material is provided on the positioning projection. The end portion of the structural steel material is positioned at a predetermined position of the joint portion by bringing the end portion into contact with each other.
[0009]
Here, as the structural steel material, in addition to H-shaped steel, rectangular steel pipe, etc., any cross-sectional steel material may be used, and further, tubular or solid steel material may be used. The general configuration is not particularly limited. In addition, the size and shape of the positioning protrusions are not limited at all, and may be point contact or surface contact with the structural steel material.
[0010]
In addition, the number of positioning protrusions is at least two in the axial direction of the structural steel material, which can be positioned by contacting the end of the structural steel material with the joining of the connecting metal fitting, and the shaft of the remaining structural steel material. As for the perpendicular direction, it is sufficient that the positions in two orthogonal directions can be determined. Since the positioning projections are used for positioning, the number is at least two. In addition, by using a plurality of positioning projections for positioning in the same direction, positioning in that direction can be ensured.
[0011]
According to the configuration of the present invention, since the connection fitting is provided with at least two positioning projections, the positional relationship between the structural steel material and the connection fitting can be easily and accurately positioned. Can be welded together. Thereby, the position of the fastening part of a connection metal fitting does not shift, and the problem that structural steel materials cannot be connected can be solved.
[0012]
In addition, according to the configuration of the present invention, the structural steel material and the connecting metal fitting can be easily positioned simply by bringing the end of the structural steel material and the positioning projection into contact with each other. Since the work time is also shortened, the overall cost can be kept low.
[0014]
Here, the relative movement of the structural steel material in the direction perpendicular to the axis means that the end portion of the structural steel material can slide relative to the surface of the joint at the joint of the connecting fitting.
[0015]
By the way, for example, by providing positioning projections at both ends in two directions orthogonal to the direction perpendicular to the axis of the structural steel material, it is possible to completely restrict the movement of the connecting bracket in the direction perpendicular to the axis of the structural steel material. it can. However, in this case, when positioning the structural steel material and the connecting metal fitting, the end portion of the structural steel material must be inserted into the range surrounded by the positioning protrusions, which takes time.
[0016]
According to the configuration of the present invention, when positioning the structural steel material and the connection metal fitting, the joint portion of the connection metal fitting is once brought into contact with the end of the structural steel material, and then the connection metal material is slid to come into contact. The positioning projection can be positioned by contacting the end of the structural steel material. Thereby, positioning can be performed easily.
[0017]
In addition to the above-described configuration, the connection fitting of the present invention may have a configuration in which “the positioning protrusion is formed by press molding”.
[0018]
Here, as press molding, a method of forming a positioning projection by punching a press-type punch from the side where the positioning projection is formed, or a positioning projection is formed by driving a punch from the side opposite to the side where the positioning projection is formed. The method of doing, etc. can be illustrated.
[0019]
By the way, as a method of forming the positioning protrusion, for example, a method of forming by cutting or casting is conceivable. However, in the case of cutting, machining is required, and the processing takes time and labor. In the case of casting, in addition to the need for a mold, special cast steel that can be welded must be used. In either case, the cost of the connecting metal fitting is increased.
[0020]
Therefore, according to the configuration of the present invention, since the positioning protrusion is formed by press molding, it can be formed in a shorter time compared to the case of forming by cutting or casting. Moreover, since it is not necessary to use a special material for the connection fitting, the cost can be kept low as a whole, and the connection fitting can be manufactured at low cost.
[0021]
In addition, when using the method of driving the punch of a press die from the side where the positioning protrusion is formed to form the positioning protrusion, this is a method of pressing from the opposite side, especially when the thickness of the joint forming the positioning protrusion is thick. In contrast, a large press with a large press pressure is required, and positioning protrusions can be formed even if the press pressure is not large, so a large press is not required and the cost of equipment is low. Can be suppressed.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a connection fitting according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view showing a state in which a connecting metal fitting and a structural steel material are joined by welding. 2A is a front view of the connection fitting, FIG. 2B is a right side view of the connection fitting, FIG. 2C is a bottom view of the connection fitting, and FIG. 2D is an enlarged cross-sectional view along the line DD in FIG. Moreover, FIG. 3 is explanatory drawing which shows the formation method of the positioning protrusion in a connection metal fitting. Furthermore, FIG. 4 is explanatory drawing which shows the positioning method of a connection metal fitting and structural steel materials.
[0023]
As shown in FIG. 2, the connecting metal fitting 1 of the present embodiment has a plate shape and a plate shape from a substantially square joint portion 2 in a front view, and from the back side of the joint portion 2 and from a substantially center in the left-right direction. The extending | stretching fastening part 3 is provided, the cross section has made T shape, and what cut | disconnected the T-type steel material to the predetermined length is used in this example. A plurality of (two in this example) through holes 4 for fastening arranged in the up-down direction are formed in the fastening portion 3 of the connection fitting 1.
[0024]
Four positioning protrusions 5 are provided on the front surface of the joint portion 2, and the positioning protrusion 5 has a bulging portion 6 swelled in a semicircular shape and a contact surface having a surface perpendicular to the joint portion 2. 7. The positioning projections 5 are provided at predetermined intervals, two at positions slightly lower than the upper side with respect to the joint surface 2 and two at positions slightly to the right from the left side. On the other hand, the contact surface 7 is provided so as to be substantially parallel and on the same line, and the contact surface 7 faces away from each side.
[0025]
These positioning projections 5 are provided so as to be positioned with respect to two orthogonal sides of a rectangular steel pipe, which will be described later, and when the rectangular steel pipe is positioned on the joint 2, the positioning protrusions 5 are predetermined on the entire circumference of the joint 2. It is provided at a position where a width welding allowance is formed. Reference numeral 8 is a recess formed in front of the contact surface 7 of the positioning projection 5, and this recess 8 is formed together with the positioning projection 5 when a positioning projection forming method described later is used. Is.
[0026]
Next, a method for forming the positioning protrusion 5 will be described in detail with reference to FIG. A punch 9 for press-molding the positioning projection 5 is attached to the movable side of a press machine (not shown), and a jig 10 for holding the coupling fitting 1 at the time of press molding is attached to the fixed side. The jig 10 includes a groove 11 into which the joint 2 of the connecting metal fitting 1 is inserted, a guide surface 12 that forms the groove 11 and is inclined at a predetermined angle, and a contact portion that restricts the position in the front-rear direction of the drawing (illustrated). Not). In addition, the code | symbol 13 is a groove | channel which inserts the fastening part 3 of the connection metal fitting 1. As shown in FIG.
[0027]
First, a T-shaped steel material is cut into a predetermined length to prepare a material 1a to be a connecting metal fitting. And as shown to (A), while inserting the junction part 2 of the raw material 1a in the groove | channel 11 of the jig | tool 10, the back surface of the junction part 2 is contact | abutted so that the guide surface 12 of the jig | tool 10 may be followed. And the peripheral part of the junction part 2 is made to contact | abut to the contact part which controls the position of the paper surface front-back direction, and the raw material 1a is set to the jig | tool 10. FIG. In this state, when the punch 9 is lowered by a predetermined amount, the tip of the punch 9 is plastically deformed so as to bite into the joint portion 2 and bulge to the front side of the joint portion 2 (see (B)). 5 is formed. Further, the punch 9 is raised and the material 1 a is taken out from the jig 10. In this example, the punches 9 are arranged in the front-rear direction of the paper surface, and two positioning projections 5 arranged along the same side can be simultaneously formed by a single press. Next, the material 1a is rotated by 90 ° and set again on the jig 10, and the positioning projection 5 is press-molded to complete the connecting fitting 1 having the positioning projections 5 on two sides.
[0028]
Thus, in this example, since the positioning protrusion 5 can be easily formed by press molding, the positioning protrusion 5 can be formed in a very short time, and the cost of the connecting metal fitting 1 can be reduced. Moreover, since it is not necessary to use a large-sized press machine, the cost concerning equipment can be kept low.
[0029]
Next, the positioning and joining method of the connecting metal fitting 1 of this example and the structural steel material will be described. As shown in FIG. 4, the connecting metal fitting 1 of this example is used for connecting a square steel pipe 14 as a structural steel material, and the end of the square steel pipe 14 and the joint 2 of the connecting metal 1 are brought into contact with each other. . And the front-end | tip outer periphery of the square steel pipe 14 is made to contact | abut to the positioning protrusion 5 so that the junction part 2 may be slid.
[0030]
Thereafter, the welded part 2 and the outer periphery of the end of the square steel pipe 14 are temporarily welded, and after confirming misalignment, the entire circumference is welded, and the connecting fitting 1 and the square steel pipe 14 are welded. After joining, the square steel pipe 14 can be fastened by a fastener such as a bolt and a nut (see FIG. 1).
[0031]
Thus, according to the connection fitting 1 of this example, the positioning protrusion 5 is provided on the connection fitting 1 with respect to two orthogonal sides of the square steel pipe 14, so that the position of the square steel pipe 14 and the connection fitting 1 is determined. The relationship can be easily and accurately positioned, and in this state, they can be welded together. Thereby, the position of the fastening part 3 of the connection metal fitting 1 does not shift, and the problem that the square steel pipes 14 cannot be fastened can be solved.
[0032]
Further, according to the connection fitting 1 of this example, the square steel pipe 14 and the connection fitting 1 can be easily positioned simply by bringing the end of the square steel pipe 14 and the positioning projection 5 into contact with each other. Since the work becomes easy and the work time is shortened, the cost can be kept low as a whole.
[0033]
The present invention has been described with reference to the preferred embodiment. However, the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention as described below. Improvements and design changes are possible.
[0034]
That is, in the present embodiment, the four joints 2 provided with the positioning protrusions 5 are shown. However, the present invention is not limited to this. For example, as shown in FIG. One of each of the 14 orthogonal two sides may be provided. Moreover, as shown in (B), it may be provided with a positioning protrusion 15 that can perform positioning in two directions with one protrusion and a positioning protrusion 16 that can position one side thereof. Since the positioning protrusions 15 and 16 can be formed by a single press molding, the cost of the connection fitting 1 can be further reduced.
[0035]
Further, as shown in FIG. 5 (C), one positioning protrusion 5 may be provided on one side, and further, as shown in FIG. 5 (D), the positioning protrusion 5 is brought into contact with the three sides of the square steel pipe 14. 5 may be provided.
[0036]
Moreover, in this Embodiment, although the square steel pipe 14 was shown as a structural steel material, it is not limited to this, It shows to the H-shaped steel 17 as shown in FIG.5 (E), or (F). The present invention can be applied to structural steel materials such as the round steel pipe 18 as described above, and can be applied regardless of the cross-sectional shape, tubular shape, and solid shape of the structural steel material. In addition, the outer peripheral shape of the joint part in the connection fitting may be any shape as long as the structural steel material can be positioned and joined.
[0037]
Further, in the present embodiment, the fastening portion 3 is configured with a single flat plate, but is not limited thereto, and may be composed of two or a plurality of plates. Good. In the present embodiment, the positioning projection 5 is positioned so as to be brought into contact with the outer periphery of the square steel pipe 14, but the positioning projection is brought into contact with the inner circumference of the square steel pipe or other steel pipe. Then, positioning may be performed.
[0038]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a connection fitting that can easily position the positional relationship between the structural steel material and the connection fitting when the connection fitting is joined to the end of the structural steel material. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a connecting metal fitting and a structural steel material are welded together.
2A is a front view of a connection fitting, FIG. 2B is a right side view of the connection fitting, FIG. 2C is a bottom view of the connection fitting, and FIG. 2D is an enlarged cross-sectional view along the line DD in FIG. is there.
FIG. 3 is an explanatory view showing a method for forming positioning protrusions in a connecting metal fitting.
FIG. 4 is an explanatory view showing a positioning method between a connecting metal fitting and a structural steel material.
FIG. 5 is a front view showing another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connection metal fitting 2 Joint part 3 Fastening part 5,15,16 Positioning protrusion 9 Punch 14 Square type steel pipe 17 H type steel 18 Round type steel pipe

Claims (2)

A joint comprising: a joint that is in contact with an end of the structural steel and is welded together; and a fastener that is provided on the opposite side of the structural steel and that is coupled to another structural steel. In the bracket,
The joint is provided with at least two positioning projections for positioning in two orthogonal directions in the direction perpendicular to the axis of the structural steel material , and the positioning projections are provided with the structural steel material with respect to the joint. It is provided at a position where it can be positioned by relative movement in the direction perpendicular to the axis, and the end of the structural steel is brought into contact with the positioning protrusions, whereby the end of the structural steel is brought into contact with the joint A connecting bracket characterized by being positioned at a predetermined position. The connection fitting according to claim 1, wherein the positioning protrusion is formed by press molding.

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