JP2017119961A - Joint component and formation method of joint structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint component the one end of which is pressure-fixed to a skelton with a pressure-fixing type anchor and on the other end of which a joint structure is formed.SOLUTION: There is provided a joint component 1 the one end of which constitutes an anchor side end part to be a pressure-fixing type anchor and the other end of which constitutes a joint side end part to be a mechanical joint. The joint component consists of: an approximately cylindrical sleeve 2 on the inner peripheral surface of which a screw groove is formed; a bolt 3 whose bolt head has a flat polygonal shape and which is screwed into the sleeve 2; and a steel bar 4 whose end part is pressure-fixed to the sleeve 2. A tip end of the steel bar 4 has a pointed shape so as to crush an adhesive agent inclusion capsule inserted into a bore hole arranged at a skelton. One end of the sleeve 2 is pressure-fixed to an end part of the steel bar 4 partially inserted into the sleeve 2. Into the other end of the sleeve 2, the bolt 3 is detachably screwed. In a state where the bolt 3 is detached, a joint bolt to be screwed into another sleeve which is pressure-fixed to a reinforcing bar forming a joint structure is configured so as to be screwed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a joint component having a structure of an adhesive anchor and a mechanical joint.

  The adhesive anchor is a rod-shaped anchor having a predetermined depth in the housing, containing a smashable capsule filled with an adhesive inside the perforation, and a sharply formed tip, such as a hammer drill. A construction tool is used to forcibly embed the capsule while crushing it into the perforation, and fix the anchor to the housing by curing the adhesive. This construction method is widely used for earthquake-resistant repair work for attaching a seismic wall, as well as work for installing equipment piping and the like, and various patents have been filed as shown in the example of Patent Document 1.

JP 2012-107408 A

These adhesive anchors are used in various lengths as required, but when long ones are used, when reinforcing bars that cross the adhesive anchors are arranged, they interfere with each other. The problem is that it is difficult to arrange the bars.
In this regard, it is convenient if a short adhesive anchor is adhered to the housing, and a joint structure is formed on the adhesive anchor according to the work situation so as to have a predetermined length.

  Then, an object of this invention is to provide the coupling component which can form a joint structure in the other end, making one end adhere | attach to a housing with an adhesive anchor.

  In order to achieve the above object, a joint component according to one aspect of the present invention is a joint component in which one end constitutes an anchor-side end portion serving as an adhesive anchor and the other end constitutes a joint-side end portion serving as a mechanical joint. A substantially cylindrical sleeve having a thread groove formed on the inner peripheral surface, a bolt head having a flat polygonal shape, a bolt screwed into the sleeve, and a bar steel whose end is pressed against the sleeve, The tip of the steel bar is formed in a pointed shape to crush the adhesive-encapsulated capsule inserted in the perforation provided in the housing, and one end of the sleeve is partially in the sleeve It is attached by crimping to the end of the inserted steel bar, and the other end of the sleeve is screwed into the bolt so that it can be attached and detached. Crimp to the reinforcing bar to be formed And connecting bolts screwed into the other sleeve, characterized in that it is configured to be screwed.

  Further, the bar may be provided with a mark for identifying the embedding depth of the bar inserted into the perforation for each predetermined length.

  The steel bar may be a deformed steel bar.

  In addition, the joint structure forming method according to another aspect of the present invention includes a substantially cylindrical sleeve having a thread groove formed on an inner peripheral surface, a bolt head having a flat polygonal shape, and a bolt screwed into the sleeve. , And an end portion comprising a steel bar to be crimped to the sleeve, one end constituting an anchor side end portion serving as an adhesive anchor, and the other end constituting a joint side end portion serving as a mechanical joint, The tip is formed in a pointed shape to crush the adhesive-encapsulated capsule inserted in the perforation provided in the housing, and one end of the sleeve is made of the steel bar partially inserted in the sleeve. A method of forming a joint structure using a joint component attached by crimping to an end, wherein the bolt is impacted or rotated to insert the steel bar deeply into the bore of the housing from the tip, Inserted in the drilling A step of crushing and adhering the encapsulating capsule, and removing the bolt from the sleeve, and connecting the end of the sleeve from which the bolt has been removed to another sleeve that is press-bonded to the reinforcing bar forming the joint structure And a step of screwing a bolt.

  According to the present invention, a joint structure can be formed at the other end while one end is adhered to the housing by the adhesive anchor.

It is an appearance perspective view showing a joint component concerning an embodiment of the present invention. It is sectional drawing which shows the coupling component which concerns on this embodiment. It is a fragmentary sectional view showing the process of bonding the joint component concerning this embodiment to a frame, (a) state which inserted adhesive encapsulating capsule, (b) state which broken adhesive encapsulating capsule, (c) joint The state which adhered the part to the housing is shown. It is a sectional side view which shows the process of forming the joint structure of a reinforcing bar with the joint component which concerns on this embodiment.

Next, a joint component and a construction method according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the joint component 1 according to the present embodiment includes a substantially cylindrical sleeve 2 having a thread groove formed on the inner peripheral surface, a polygonal bolt 3 with a flat bolt head 31, The sleeve 2 is made of a bar steel 4 that is crimped, and one end constitutes an anchor-side end portion that serves as an adhesive anchor, and the other end constitutes a joint-side end portion that serves as a mechanical joint.

  The sleeve 2 is a metal tube having a substantially cylindrical shape with both ends opened. One end side of the sleeve 2 constitutes an insertion part 21, and the other end side constitutes a screwing part 22. Further, the hollow portion of the sleeve 2 constitutes a through hole 2a into which the steel bar 4 and the bolt 3 are inserted. Further, of the through hole 2a, the hollow portion of the insertion portion 21 is screwed into the insertion hole 21a. The hollow portion of the portion 22 constitutes a screwing hole 22a.

  The insertion part 21 is a part into which the steel bar 4 is inserted and whose inner peripheral surface is crimped to the steel bar 4. The insertion hole 21 a provided in the insertion portion 21 is a hole into which the end of the steel bar 4 is inserted from the opening, and the inner peripheral surface is smooth and is substantially the same as or slightly larger than the diameter of the steel bar 4. It has a diameter. The steel bar 4 is inserted into the insertion hole 21a, and in this state, the inner peripheral surface of the sleeve 2 is pressure-bonded to the steel bar 4 by performing a plastic working that applies a pressing force radially inward from the outer peripheral surface.

The screwing portion 22 is a portion where the bolt 3 and the connecting bolt 5 (see FIG. 4) are screwed together. The screwing hole 22a provided in the screwing portion 22 is a hole into which the bolt 3 and the connecting bolt 5 having a diameter smaller than that of the steel bar 4 are screwed, and has a diameter smaller than that of the steel bar 4 and the insertion hole 21a. A thread groove corresponding to the bolt 3 and the connecting bolt 5 is formed on the inner peripheral surface.
Further, the screwing portion 22 is reduced in diameter by being pressed in the radial direction from the outer peripheral surface, which has been configured in advance with the same diameter as the insertion portion 21.

The bolt 3 is a bolt in which the bolt head 31 has a flat polygonal shape, and the bolt shaft 32 forms a male screw. The male screw formed on the outer peripheral surface of the bolt shaft 32 corresponds to the screw groove formed in the screwing hole 22a of the sleeve 2, and can be detachably screwed into the screwing hole 22a. .
The bolt 3 in the present embodiment has a flat hexagonal bolt head 31, but the bolt 3 is fixedly held to rotate the joint component 1 or hit the bolt head 31. If it is suitable for, it can also comprise in other polygonal shapes.

  The bolt 3 is used when the end portion on the steel bar 4 side constituting the adhesive anchor is bonded to the housing, and then removed from the sleeve 2 when forming a joint structure.

The steel bar 4 is a deformed steel bar in which uneven nodes are formed on the outer peripheral surface. In the case of a deformed steel bar, when the steel bar 4 inserted into the through hole 2a of the sleeve 2 is pressure-bonded to the sleeve 2, the nodes on the outer peripheral surface of the steel bar 4 bite into the inner peripheral surface of the through hole 2a of the sleeve 2, The steel bar 4 and the sleeve 2 can be firmly bonded to each other.
Regardless of this, in the practice of the present invention, the steel bar 4 may be another type of steel bar.

Of the ends of the steel bar 4, the end opposite to the sleeve 2 constitutes an anchor side end serving as an adhesive anchor, and crushes the adhesive-encapsulated capsule inserted in the perforation provided in the housing. Therefore, the tip is formed in a pointed shape.
The tip shape may be a pointed shape different from the pointed shape shown in each figure as long as the adhesive-encapsulated capsule can be crushed.

In addition, when the joint part 1 is used as an adhesive anchor and the steel bar 4 is inserted into the perforation provided in the housing, the depth of the steel bar 4 embedded in the perforation is identified so that the outer peripheral surface of the steel bar 4 is constant. The mark 41 is attached | subjected for every length.
The mark 41 is only required to be attached to the outer peripheral surface of the steel bar 4 in such a manner that the operator can visually recognize it. The mark 41 is formed by applying a paint, or the mark 41 is formed by forming a small recess. It can depend on various aspects.

Next, a process of bonding the anchor side end portion to the housing using the joint component 1 as an adhesive anchor will be described with reference to FIG.
First, a hole 10a is drilled at a predetermined position of the housing 10 with a drill or the like.

Then, the steel bar 4 of the joint component 1 is inserted into the perforation 10a with the adhesive-encapsulated capsule 11 inserted into the perforation 10a.
The tip of the steel bar 4 is formed in a pointed shape, whereby the adhesive-encapsulated capsule 11 in the perforation 10a is broken, and the adhesive sealed in the adhesive-encapsulated capsule 11 leaks into the perforated 10a.

The steel bar 4 is inserted as it is into the perforation 10a to a predetermined effective embedding depth.
At this time, the steel bar 4 can be easily inserted into the perforation 10a using the bolt 3 screwed into the sleeve 2. That is, while holding the hexagonal bolt 3 in a fixed manner and turning the joint part 1, the steel bar 4 can be turned into the bore 10 a, and the bolt head 31 of the bolt 3 is flat. The steel bar 4 can also be inserted into the perforation 10a by striking 31.

After the steel bar 4 is inserted into the perforation 10a to a predetermined effective embedding depth, it is hardened and cured.
In addition, the embedding depth of the steel bar 4 in the perforation 10a can be grasped by referring to the mark 41 exposed outside the perforation 10a.

After the steel bar 4 is bonded to the housing, a process of forming a joint structure with a reinforcing bar at the joint side end will be described with reference to FIG.
First, the bolt 3 is removed from the screwing hole 22 a of the sleeve 2.
A sleeve 6, which is the same as the sleeve 2, is pressure-bonded to the end of a reinforcing bar 7 that forms a joint structure with the steel bar 4 bonded to the housing.
Here, like the sleeve 2, the sleeve 6 has an insertion portion 61 on one end side and a screwing portion 62 on the other end side. The hollow portion of the sleeve 6 constitutes a through hole 6a into which the reinforcing bar 7 and the connecting bolt 5 are inserted. Further, of the through hole 6a, the hollow portion of the insertion portion 61 is screwed into the insertion hole 61a. The hollow portion of the joining portion 62 constitutes a screwing hole 62a.

Moreover, the connection bolt 5 used when forming a joint structure is a columnar member in which a thread is formed on the outer peripheral surface.
The outer diameter of the connecting bolt 5 corresponds to the diameter of the screwing holes 22a and 62a of the sleeves 2 and 6, and the connecting bolt 5 is inserted into the screwing holes 22a and 62a in which a female screw is formed on the inner peripheral surface. Can be screwed in.
Furthermore, the axial length of the connecting bolt 5 is about twice the length of the screw holes 22a and 62a, and one end side is screwed into the screw hole 22a of the one sleeve 2 and the other end is screwed. By screwing the side into the screwing hole 62 a of the sleeve 6, the pair of sleeves 2 and 6 into which the steel bar 4 and the reinforcing bar 7 are inserted can be connected.

With respect to the two sleeves 2 and 6 whose inner peripheral surfaces of the insertion holes 21a and 61a are pressure-bonded to the steel bar 4 or the reinforcing bar 7, the opening ends of the screwing holes 22a and 62a face each other, and the screwing holes 22a and 62a. Inside, one end side or the other end side of the connecting bolt 5 is screwed together.
Thereby, the sleeve 2 to which the steel bar 4 is crimped and the sleeve 6 to which the steel bar 7 is crimped are connected by the connecting bolt 5, and as a result, the steel bar 4 and the steel bar 7 are connected.

According to the above-described joint component 1 according to the present embodiment, a joint structure can be formed at the other end while one end is adhered to the housing by the adhesive anchor.
Further, when the one end is bonded to the housing as an adhesive anchor, the steel bar 4 can be easily inserted into the perforation 10a of the housing 10 by either turning or striking with the bolt 3 screwed into the sleeve 2. it can.
Furthermore, the embedding depth of the steel bar 4 inserted into the perforation 10 a can be easily visually recognized by the mark 41.

DESCRIPTION OF SYMBOLS 1 Joint component 2 Sleeve 2a Through-hole 21 Insertion part 21a Insertion hole 22 Screwing part 22a Screwing hole 3 Bolt 31 Bolt head 32 Bolt shaft 4 Bar steel 41 Marking 5 Connection bolt 6 Sleeve 7 Sleeve 10 Housing 10a Drilling 11 Adhesive encapsulating capsule

Claims (4)

One end constitutes an anchor side end portion that becomes an adhesive anchor, and the other end constitutes a joint side end portion that becomes a mechanical joint,
A substantially cylindrical sleeve having a thread groove formed on the inner peripheral surface;
The bolt head has a flat polygonal shape and is screwed into the sleeve.
And, the end portion is made of a steel bar that is crimped to the sleeve,
The tip of the steel bar is formed in a pointed shape in order to crush the adhesive-encapsulated capsule inserted in the perforation provided in the housing,
One end of the sleeve is attached by crimping to the end of the steel bar partially inserted into the sleeve,
At the other end of the sleeve, the bolt is detachably screwed. When the bolt is removed, a connecting bolt screwed to another sleeve press-bonded to the reinforcing bar forming the joint structure is screwed. Configured to
A joint component characterized by that. The bar is provided with a mark for identifying the embedding depth of the bar inserted into the perforation for each predetermined length.
The joint component according to claim 1. The steel bar is a deformed steel bar,
The joint component according to claim 1 or 2. A substantially cylindrical sleeve having a thread groove formed on the inner peripheral surface;
The bolt head has a flat polygonal shape and is screwed into the sleeve.
And, the end portion is made of a steel bar that is crimped to the sleeve,
One end constitutes an anchor side end that becomes an adhesive anchor, and the other end constitutes a joint side end that becomes a mechanical joint,
The tip of the steel bar is formed in a pointed shape to crush the adhesive-encapsulated capsule inserted in the perforation provided in the housing, and one end of the sleeve is partially inserted into the sleeve A method of forming a joint structure using a joint part attached by crimping to the end of the steel bar,
Striking or rotating the bolt to insert the steel bar deeply into the piercing of the housing from the tip, and crushing and bonding the adhesive-encapsulated capsule inserted in the piercing; and
Removing the bolt from the sleeve, and screwing a connection bolt to be screwed to another sleeve press-bonded to a reinforcing bar forming a joint structure at an end of the sleeve from which the bolt has been removed.
A method for forming a joint structure.

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