WO2022131513A1

WO2022131513A1 - Bracket with improved tensile strength and earthquake-proof performance, and connection member using same

Info

Publication number: WO2022131513A1
Application number: PCT/KR2021/014609
Authority: WO
Inventors: 정기춘
Original assignee: 주식회사 월드산업
Priority date: 2020-12-17
Filing date: 2021-10-19
Publication date: 2022-06-23
Also published as: KR102258727B1

Abstract

The present invention relates to a bracket with improved tensile strength and earthquake-proof performance, and a connection member using same. To this end, the present invention provides a bracket, comprising a first fastening piece in which slit-shaped fastening holes are formed in a first direction and a second fastening piece which is integrally formed to be perpendicular to the first fastening piece so that a fastening means can be selectively fastened, wherein a plurality of serrations are formed, on one surface of the first fastening piece, to be orthogonal to the slit-shaped fastening holes formed in the first direction, and each of the serrations has a concave cross-section having a predetermined curvature toward the slit-shaped fastening hole. Thus, since the serrations having the concave cross-section and formed on the bracket and the serrations having the convex cross-section and formed on a washer are pressure-fastened by bolts in a state of being in contact with each other, sufficient tensile strength can be ensured, and since the serration having a curvature can tolerate a part of the displacement even in the orthogonal direction, there is an advantage that the multidirectional displacement can be tolerated.

Description

Bracket with improved tensile strength and seismic performance and connecting member using the same

The present invention relates to a bracket having improved tensile strength and seismic performance, and a connecting member using the same, and more particularly, to a first fastening piece having a slit-type fastening hole formed in a first direction and a second fastening piece integrally formed at right angles to each other. A bracket with improved tensile strength and seismic performance, characterized in that a plurality of serrations having a concave cross section are formed on one surface of the first fastening piece to have a predetermined curvature in a direction orthogonal to the slit-type fastening hole, and It relates to the connecting member used.

In general, angle-type brackets are often used in buildings for the purpose of fastening two orthogonal members with different directions or fixing exterior materials. In particular, in recent years, curtain wall structures are being actively constructed in order to construct a beautiful elevation of a building. , are actively used for direct or indirect fastening of exterior panels of the same weight as other stone materials.

However, since these exterior panels not only directly receive lateral loads such as wind loads or earthquake loads, but also transmit other vibrations easily, there are limitations in that the fastening of the brackets and screws becomes loose or the fixing direction of the brackets is twisted. In particular, when the tightening is loosened, a slip phenomenon occurs between the bracket and the bolt, and eventually the load cannot be overcome and the bracket is bent and deformed.

In order to solve this problem, 'Fixing fixtures for building exterior stone materials' (Notice on July 15, 1996, hereinafter referred to as 'Prior Art Document 1') of Utility Model Registration No. 1996-0005780 of the Republic of Korea has been proposed. In the prior art document 1, as shown in FIG. 1a, a serration is formed on one surface of the flange, and a serration is also formed in the washer corresponding to this to engage with each other when bolting. .

However, in the prior art document 1, as a serration is formed over the front surface of the bracket and the washer, a lot of time and money are consumed and the surface finish treatment is difficult. That is, as the blade of the milling cutter is easily worn during the milling operation to form the serration, the cost burden due to frequent replacement is high, and the machining time is inevitably increased accordingly. In particular, when the plating solution is applied for the surface finishing treatment, there is a limitation in that the plating solution is formed in the valleys, thereby reducing the fastening force.

Accordingly, recently, a 'connecting member for structural and seismic design' (registration on May 23, 2019, hereinafter referred to as 'prior art document 2') of Republic of Korea Patent Registration No. 1983705 has been proposed. The prior art document 2 forms a slot hole in the flange as shown in FIG. 1b, but a serration is formed on the inner circumferential surface of the slot hole, and a washer corresponding to this forms a protrusion to be inserted into the slot hole, and the protrusion of the slot hole By forming a serration to correspond to the inner circumferential surface, it was attempted to secure the fastening force.

However, in the prior art document 2, as the work process becomes more complicated, such as forming a serration on the inner circumferential surface of the slot hole and forming a protrusion to correspond to this in the washer, time and cost are inevitably consumed more than in the prior art document 1 There was a limit, and above all, as the tensile strength was entirely dependent on the serration formed to engage the inner circumferential surface of the slot hole and the protrusion, the fastening force was significantly reduced, and the protrusion had no choice but to act as a structural weakness.

In addition, in the prior art documents 1 and 2, even when a lateral load such as a wind load or an earthquake load occurs, as the serration is continuously formed along the longitudinal direction of the slot hole, some displacement can be accommodated in the longitudinal direction of the slot hole. Since displacement cannot be accommodated in a direction orthogonal to the longitudinal direction of the slot hole, there is a problem in that a bolt or bracket is bent and deformed to cause a structural limitation.

The present invention has been proposed to solve the above problems, and work efficiency can be improved by reducing work time and cost, and no forming phenomenon occurs even when plating solution is applied for surface finishing, and sufficient tensile strength is secured Therefore, it is possible to secure fastening strength, and to provide a bracket with improved tensile strength and seismic performance that can accommodate multidirectional displacement according to lateral loads such as wind or seismic loads, and a connecting member using the same.

In order to solve the above technical problem, in the bracket 100 with improved tensile strength and seismic performance of the present invention, a slit-type fastening hole 111 is formed in the first direction so that the fastening means 200 can be selectively fastened. A first fastening piece 110 is formed, and includes a second fastening piece 120 integrally formed at right angles to the first fastening piece 110 , and on one surface of the first fastening piece 110 , A plurality of serrations 112 are formed to be orthogonal to the slit-type fastening hole 111 formed in the first direction, and each serration 112 is concave to have a predetermined curvature toward the slit-type fastening hole 111. It is characterized in that it has a cross-section.

In addition, a slit-type fastening hole 121 is formed on one surface of the second fastening piece 120 in a second direction, and a plurality of serrations 122 are formed to be perpendicular to the slit-type fastening hole 121, Each serration 122 may have a concave cross section to have a predetermined curvature toward the center of the slit-type fastening hole 121 .

In addition, the

serrations

112 and 122 are symmetrically formed with respect to the slit-

type fastening holes

111 and 121 so that the

first serrations

112a and 122a are formed on one side, and the

second serrations

112a and 122a are formed on the other side.

rations

112b and 122b may be formed.

In addition, the serrations 112 of the first fastening piece 110 and the serrations 122 of the second fastening piece 120 may be formed to have the same spacing and curvature.

On the other hand, in the connection member with improved tensile strength and seismic performance of the present invention, a first fastening piece 110 having a slit-type fastening hole 111 formed in a first direction is formed, and the first fastening piece 110 and The fastening means 200 is fastened to the bracket 100 including the second fastening piece 120 integrally formed at right angles, and on one surface of the first fastening piece 110 of the bracket 100 in the first direction. A plurality of serrations 112 are formed to be orthogonal to the formed slit-type fastening hole 111, and each serration 112 has a concave cross section to have a predetermined curvature toward the slit-type fastening hole 111, A tension washer 300 is provided on one surface of the first fastening piece 110 of the bracket 100 and fastened by the fastening means 200, and the tensile washer 300 passes through the fastening means 200. A circular fastening hole 310 may be formed, and a plurality of serrations 320 may be formed on one surface.

In addition, the serration 320 of the tension washer 300 may have a convex cross-section so as to have a curvature corresponding to the same interval as that of the serration 112 of the first fastening piece 100 .

And the serration 112 of the first fastening piece 100 and the serration 320 of the tension washer 300 are formed to have a tip-shaped peak and a valley, and the peak and the valley are formed at the same angle to each other. can be

According to the bracket 100 having improved tensile strength and seismic resistance performance of the present invention and the connection member F using the same, a circular cutting edge is formed when a plurality of serrations are formed on one surface of the first fastening piece to be perpendicular to the slit-type fastening hole. By forming a serration of a concave cross-section supporting a predetermined curvature using

In addition, each serration has a concave cross-section, and is formed symmetrically around the slit-type fastening hole, so that when the plating solution for surface finishing is applied, the plating solution is discharged through the slit-type fastening hole, so it is possible to prevent the formation of condensation.

Furthermore, since the serration of the concave cross-section formed in the bracket and the serration of the convex cross-section formed in the washer are pressed and fastened by the bolt while in contact with each other, sufficient tensile strength can be ensured, and thus a stable fastening force can be expected.

In addition, even when a lateral load such as wind load or seismic load occurs, displacement is not accepted only in the longitudinal direction of the slit-type fastening hole, and some displacement can be accommodated in the orthogonal direction by the serration having curvature, so it is multidirectional. There is an advantage that displacement can be accommodated.

In addition, the serrations of the first fastening piece and the tensile washer are formed to have a tip-shaped peak and a valley, respectively, and the peak and the valley are formed at the same angle to each other, so that they are engaged to have a sufficient surface area, so that further improved tensile strength can be expected. have.

1A and 1B are perspective views illustrating a connection member according to a prior art document.

Figure 2 is a perspective view showing a bracket according to various embodiments of the present invention.

Figure 3 is a state diagram showing a connection member according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing a connection member according to an embodiment of the present invention.

5 is a perspective view illustrating a tension washer according to an embodiment of the present invention.

Figure 6 is a plan view for explaining the seismic performance principle of the connection member according to an embodiment of the present invention.

7 is a cross-sectional view for explaining the seismic performance principle of the connection member according to an embodiment of the present invention.

8 is a cross-sectional view illustrating a state of use of a connecting member according to an embodiment of the present invention.

Hereinafter, based on the preferred embodiment of the bracket 100 and the connection member (F) using the improved tensile strength and seismic performance of the present invention based on the items shown in the drawings will be described in detail.

The bracket 100 with improved tensile strength and seismic performance of the present invention is composed of a first fastening piece 110 and a second fastening piece 120 integrally formed in an angular shape and at right angles to each other as shown in FIG. 2 . . However, although not shown, the bracket 100 of the present invention is manufactured in a state including the shapes of the first fastening piece 110 and the second fastening piece 120 according to the shape and coupling method of the fastening object to be fastened or supported. The end of the first fastening piece 110 may be bent and extended or the end of the second fastening piece 120 may be bent and extended to have various shapes.

On the other hand, according to an embodiment of the present invention, the bracket 100 has a slit-type fastening hole 111 formed in the first direction so that the fastening means 200 can be selectively fastened to the first fastening piece 110 . can That is, it is possible to achieve variability and efficiency in construction by allowing the fastening means 200 to be fastened to a specific position of the slit-type fastening hole 111 elongated in the first direction.

As shown in FIGS. 3 and 4, the fastening means 200 has a head, and a bolt 210 having a male thread on an outer peripheral surface thereof, and a nut 220 having a female thread to be fastened to the bolt 210. Can be composed of In addition, the fastening means 200 may be fastened so as to sequentially pass through the washer 300 to be described later, the first fastening piece 110 of the bracket 100 and the object to be fastened. In this case, of course, the fastening means 200 may be an anchor bolt embedded in a concrete slab or other wall.

In addition, a plurality of serrations 112 are formed on one surface of the first fastening piece 110 of the present invention to be orthogonal to the slit-type fastening hole 111 formed in the first direction. However, in the bracket 100 with improved tensile strength and seismic performance of the present invention, each of the serrations 112 as shown in the enlarged view of FIG. A major difference exists in that it is formed to have a concave cross section to have a predetermined curvature toward the slit-type fastening hole 111 .

At this time, since the serration 112 is formed to have a predetermined curvature, only the portion adjacent to the slit-type fastening hole 111 without forming the serration 112 over the entire surface of the first fastening piece 110 . The serration 112 may be formed, and the flat portion 113 without a separate serration processing may be provided in other portions. That is, in the manufacturing process of forming a plurality of serrations 112 to be orthogonal to the slit-type fastening hole 111 on one surface of the first fastening piece 110, a circular cutting edge is used to obtain the same predetermined curvature as the cutting edge. The support is formed by forming the serration 112 of the concave cross-section, thereby reducing work time and cost, thereby improving work efficiency.

On the other hand, as shown in Fig. 2 (a), a separate fastening hole may not be formed in the second fastening piece 120 or a circular fastening hole may be formed, and as shown in Fig. 2 (b), in the embodiment Accordingly, at least one slit-type fastening hole 121 may be formed on one surface of the second fastening piece 120 as well as the first fastening piece 110 in the second direction. In addition, it is also possible to form a plurality of slit-type fastening holes 121 in the second direction as shown in (c) of FIG.

Also in the embodiment in which the slit-type fastening hole 121 is formed in the second fastening piece 120 , a plurality of serrations 122 may be formed to be orthogonal to the slit-type fastening hole 121 formed in the second direction. have. Similarly, each individual serration 122 constituting the plurality of serrations 122 may be formed to have a concave cross section to have a predetermined curvature toward the center of the slit-type fastening hole 121 .

In addition, like the serration 112 formed on the first fastening piece 110, the serration 122 formed on the second fastening piece 120 also has a slit-type fastening hole ( 121), the serration 122 is formed only in the portion adjacent to the portion, and the flat portion 123 without a separate serration processing can be provided in other portions, thereby reducing work time and cost, thereby improving work efficiency. have.

On the other hand, as shown in FIG. 4 , the

serrations

112 and 122 formed on the first and

second fastening pieces

110 and 120 are symmetrical about the slit-type fastening holes 111 and 121 . The

first serrations

112a and 122a may be formed on one side, and

second serrations

112b and 122b may be formed on the other side.

Accordingly, each of the

serrations

112 and 122 has a concave cross section, and is formed symmetrically around the slit-type fastening hole 111 so that the plating solution remains in the valleys of the serrations even when a plating solution for surface finishing is applied. Since it is discharged to the slit-type fastening hole 111 along the curvature of the

first serrations

112a, 122a or the

second serrations

112b and 122b, it is possible to prevent the plating solution from forming. Furthermore, since the area to be well-cut by the first fastening piece 110 and the second fastening piece 120 can be limited to a part, the efficiency of the cutting process using the circular cutting edge can be secured.

Further, as shown in FIGS. 6 and 8 , the serration 112 of the first fastening piece 110 and the serration 122 of the second fastening piece 120 have the same spacing g and curvature ( r1). In this case, the interval g between the

serrations

112 and 122 may be defined as the distance between the peaks, and the curvature r may also be defined as the curvature formed by the peaks or valleys.

When the serration 112 of the first fastening piece 110 and the serration 122 of the second fastening piece 120 are formed to have the same spacing g and curvature r1, a tensile washer to be described later By forming the serrations 320 to have the same spacing (g) and the corresponding curvature (r2) to correspond to the 300 as well, one tension washer 300 is applied to the first fastening piece 110 as well as the second The advantage of being able to be universally used also for the fastening piece 120 is exhibited.

In this case, the curvature r2 of the serrations 320 formed on the tension washer 300 is the curvature r1 of the

serrations

112 and 122 formed on the first and

second fastening pieces

110 and 120 . ) is based on the ridge, and conversely, when the curvature r1 of the

serrations

112 and 122 is based on the trough, the curvature r1 (r2) is defined based on the ridge. ) is preferably formed to be identical to each other.

Hereinafter, as shown in FIGS. 3 and 4 , the specific fastening method and coupling relationship of the connecting member F including the bracket 100 and the fastening means 200 and the washer 300 of the present invention will be described in more detail below. explain in detail. The bracket 100 has a first fastening piece 110 having a slit-type fastening hole 111 formed therein in the first direction as described above, and is integrally formed to be perpendicular to the first fastening piece 110 . By including the second fastening piece 120 , the fastening means 200 is fastened to the first fastening piece 110 of the bracket 100 .

The fastening means 200 may be composed of a bolt 210 having a head and having a male thread on the outer circumferential surface, and a nut 220 having a female thread to be fastened to the bolt 210, and the fastening means 200 will be described later. The washer 300 to be fastened to pass through the first fastening piece 110 of the bracket 100 and the object to be fastened sequentially.

On the other hand, a plurality of serrations 112 are formed on one surface of the first fastening piece 110 of the bracket 100 so as to be orthogonal to the slit-type fastening hole 111 formed in the first direction, and the 1 The fastening piece 110 is fastened by the fastening means 200 in a state in which the tension washer 300 is provided on one surface.

At this time, as shown in FIG. 5 , the tension washer 300 has a circular fastening hole 310 through which the fastening means 200 passes, and a plurality of serrations 320 are formed on one surface to form the first fastening. It is provided to engage with the serration 112 formed on the piece 110 and is press-fastened by the fastening means 200 .

However, the connecting member (F) with improved tensile strength and seismic performance of the present invention goes further than simply forming a plurality of

serrations

112 and 320, as shown in FIG. ), each serration 112 formed in the slit-type fastening hole 111 is formed to have a concave cross section to have a predetermined curvature, and the serration 320 of the tension washer 300 is the first A major difference exists in that the fastening piece 110 is formed to have a convex cross-section to have the same spacing and a corresponding curvature as the serrations 112 .

Specifically, as shown in FIGS. 6 and 8 , the serration 112 of the first fastening piece 110 and the serration 320 of the tension washer 300 have the same interval g and the corresponding curvature r1 ) (r2) may be defined to mean that the distance between the peaks forming the

serrations

112 and 320 is the same, and the serration 320 formed on the tension washer 300 is When the curvature r2 is based on the valley part, the curvature r1 of the

serrations

112 and 122 formed in the first and

second fastening pieces

110 and 120 can be defined based on the mountain part, Conversely, when the curvatures r1 of the

serrations

112 and 122 are defined based on the valleys, the curvatures r1 and r2 can be defined to be identical to each other by defining the peaks as the reference.

Similarly, in the second fastening piece 120 of the bracket 100 , the slit-type fastening hole 121 is formed in the second direction, and a plurality of serrations 122 are formed in a direction orthogonal to the second direction. It is also preferable that the serrations 320 of the tension washer 300 described above are formed to have the same spacing g and curvature r2.

Accordingly, in a state in which the

serrations

112 and 122 of the concave section formed in the bracket 100 and the serrations 320 of the convex section formed in the tension washer 300 are in contact with each other, the bolt 210 and the nut 220 Since it is fastened by pressure, sufficient tensile strength can be secured based on a sufficient fastening depth due to the curvature of the

serrations

112, 122, and 320, which ultimately leads to a stable fastening force.

In addition, in the state shown in (a) of FIG. 7, as in the state shown in (b), even when a lateral load such as a wind load or an earthquake load occurs, the slit-type fastening holes 111 and 121 are displaced in the longitudinal direction. Of course, since some displacement can be accommodated in a direction orthogonal to the

serrations

112 and 320 having curvature as in the state shown in (b) in the state shown in (a) of FIG. 6, multidirectional displacement Because it can be accommodated, it has the advantage of seismic resistance function, more precisely, vibration suppression.

On the other hand, as shown in FIG. 8 , the serration 112 of the first fastening piece 110 and the serration 320 of the tension washer 300 are formed to have a tip-shaped peak and a valley, and the peak and the valley may be formed at the same angle to each other.

The serrations 111 of the first fastening piece 110 and the serrations 320 of the tension washer 300 are preferably formed in the same shape as the ridges and valleys, and the angles are also the same. By forming, it is possible to form an ideal interlocking structure in which the surface area is completely in contact, and thus, further improved tensile strength can be expected.

The bracket 100 with improved tensile strength and seismic resistance performance described above and the connection member F using the same can be obtained by those of ordinary skill in the art to which the present invention pertains without changing the technical spirit or essential features of the present invention. It will be understood that it may be embodied in specific forms.

Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the following claims rather than the above detailed description, and the meaning and scope of the claims And all changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

Claims

A first fastening piece 110 having a slit-type fastening hole 111 formed therein is formed in a first direction so that the fastening means 200 can be selectively fastened, and is integrally formed with the first fastening piece 110 at a right angle. In the bracket 100 including the formed second fastening piece 120,

A plurality of serrations 112 are formed on one surface of the first fastening piece 110 to be orthogonal to the slit-type fastening hole 111 formed in the first direction, and each serration 112 has a slit-type fastening hole ( 111), a bracket with improved tensile strength and seismic performance, characterized in that it has a concave cross section to have a predetermined curvature.
According to claim 1,

A slit-type fastening hole 121 is formed on one surface of the second fastening piece 120 in the second direction, and a plurality of serrations 122 are formed so as to be orthogonal to the slit-type fastening hole 121, each The serration 122 is a bracket with improved tensile strength and seismic performance, characterized in that it has a concave cross section to have a predetermined curvature toward the center of the slit-type fastening hole 121 .
3. The method of claim 1 or 2,

The serrations 112 and 122 are symmetrically formed around the slit-type fastening holes 111 and 121, so that the first serrations 112a and 122a are formed on one side, and the second serrations ( Bracket with improved tensile strength and seismic performance, characterized in that 112b) (122b) are formed.
3. The method of claim 2,

The serration 112 of the first fastening piece 110 and the serration 122 of the second fastening piece 120 are formed to have the same spacing and curvature. Brackets.
A first fastening piece 110 having a slit-type fastening hole 111 formed in a first direction is formed, and a second fastening piece 120 integrally formed to be perpendicular to the first fastening piece 110 is included. In the connecting member (F) to which the fastening means 200 is fastened to the bracket 100,

A plurality of serrations 112 are formed on one surface of the first fastening piece 110 of the bracket 100 so as to be orthogonal to the slit-type fastening hole 111 formed in the first direction, and each serration 112 has a slit. It has a concave cross section to have a predetermined curvature toward the mold fastening hole 111,

A tension washer 300 is provided on one surface of the first fastening piece 110 of the bracket 100 and fastened by the fastening means 200, and the tensile washer 300 passes through the fastening means 200. A connecting member with improved tensile strength and seismic performance, characterized in that a circular fastening hole 310 is formed, and a plurality of serrations 320 are formed on one surface.
6. The method of claim 5,

Tensile strength and seismic performance, characterized in that the serration 320 of the tensile washer 300 has a convex cross section to have the same spacing and a curvature corresponding to the serration 112 of the first fastening piece 110 . improved connection member.
7. The method of claim 6,

The serration 112 of the first fastening piece 110 and the serration 320 of the tensile washer 300 are formed to have a tip-shaped peak and a valley, and the peak and the valley are formed at the same angle to each other. A connecting member with improved tensile strength and seismic performance, characterized in that.