JP2764574B2 - Rotary drive holder for adhesive anchor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for holding an anchor in a mounting hole formed in a body by inserting an adhesive capsule into the mounting hole while rotating the anchor with a rotary driving tool. About the holder to do.

[0002]

2. Description of the Related Art Conventionally, when an anchor is planted in a concrete body, a construction method as shown in FIG. 4 is implemented.

That is, as shown in FIG. 4A, a mounting hole 3 having a predetermined diameter and a predetermined length is drilled at a predetermined position of a concrete frame 1 by a drill 2. After the perforation, the chips in the mounting hole 3 are blown off with an air nozzle or the like, and further cleaned with a brush or the like so that the chips do not remain in the mounting hole 3.

[0004] Next, as shown in FIG. 4 (B), a capsule 4 of an adhesive is inserted into the mounting hole 3 and stored. The capsule 4 is filled with an adhesive, such as a two-liquid mixing type, which is cured by breaking and stirring the capsule 4.

[0005] Thereafter, as shown in FIG. 4 (C), the anchor 5 is inserted into the mounting hole 3 while applying rotation, impact, etc., by a rotary driving tool 6 such as an electric type, and the capsule 4 is broken and the adhesive Stir 4a.

As shown in the figure, when the anchor 5 is an anchor bolt formed with a male screw, a pair of nuts is provided at the tail end of the anchor 5 to enable the rotation of the anchor 5 by the socket 6a of the rotary driving tool 6. A double nut composed of 7a and 7b is screwed. Therefore, the socket 6a
Is engaged with the nut 7a, whereby the anchor 5 is driven and rotated. At this time, since the nut forms a double nut, the nut transmits a rotational driving force to the anchor 5.

[0007] The adhesive 4a with the anchor 5 not moved.
After hardening and curing, as shown in FIG. 4D, the double nuts 7a and 7b are
Is removed from the anchor 5, and the work of implanting the anchor 5 is completed.

[0008]

In order to carry out the above-mentioned construction method, in the prior art, it is necessary to attach the double nuts 7a and 7b to the anchor 5 in advance. However, the work of installing a double nut for each anchor is extremely complicated and inefficient due to the need for manual work, which is not only inexpensive, but also costly. It takes time work.

Also, such double nuts 7a, 7b
However, since the anchor 5 must be removed after the anchor 5 is implanted in the mounting hole 3, an operation for removing the anchor 5 is required, which is inefficient. Furthermore, the double nuts 7a and 7b after removal are extremely uneconomical if discarded, and even if one of the nuts 7a can be used when attaching the attachment member to the anchor 5, Since at least the other nut 7b is unnecessary, it is also uneconomical.

[0010]

SUMMARY OF THE INVENTION The present invention solves the above problems and eliminates the need for uneconomic means such as the double nuts 7a and 7b. The present invention provides a rotary drive holder for an adhesive anchor which enables quick rotation and easy removal after the anchor 5 is inserted into the mounting hole 3 while enabling the drive rotation by a tool.

In view of the above, the present invention provides a holder for rotatingly inserting an anchor into a mounting hole, which is pierced in a frame and contains an adhesive therein, and which holds the anchor. A cylindrical portion having a holding hole to be held, and a connecting portion connected to a rotary driving tool, wherein the cylindrical portion includes a fixed portion and an opening / closing portion divided in a radial direction, and includes an opening / closing portion and a fixed portion. Are fixedly connected to each other so as to be openable and closable, and a fixing means for removably fixing the openable and closable parts and the fixing part with the both parts closed is provided.

At this time, in the holder of the present invention, for the anchor composed of a bolt formed with a male screw, a female part is formed on the at least one of the fixed part and the opening / closing part with the cylindrical part engaging with the male screw. This transmits the rotational driving force to the anchor bolt.

[0013] On the other hand, for an anchor made of a different diameter steel rod having a node and / or a rib, the cylindrical portion has a groove formed on at least one of the fixed portion and the opening / closing portion to engage with the node and / or rib. As a result, a rotational driving force is transmitted to the anchor bolt.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) The first embodiment shown in FIGS.
In the embodiment, the holder 11 includes a cylindrical portion 13 having a holding hole 12 for holding the anchor 5 and a connecting portion 15 connected to a rotary driving tool 14 such as an electric tool.
In the case of the example shown in the figure, the connecting portion 15 forms a shank in the shape of a round bar or a square bar which is removably inserted into the chuck 16 of the rotary drive tool 14, as shown in FIG. A polygonal head that is detachably engaged with the socket 6a may be used, and any other configuration may be used as long as it is detachably connected to the power transmission unit of the rotary drive tool 14. it can.

The cylindrical portion 13 has a fixed portion 17 and an opening / closing portion 18 divided in a radial direction, and the opening / closing portion 18 and the fixed portion 17 are connected to each other so as to be freely opened and closed by a pivot 19 such as a pin. In the case of the illustrated example, when the opening / closing portion 18 is closed with respect to the fixed portion 17, the cylindrical portion 13 has a cylindrical shape as a whole, but when the opening / closing portion 18 is rotated about the pivot 19 as a fulcrum,
The holding hole 12 is divided and opened in the radial direction.

In the first embodiment, the anchor 5
Consists of an anchor bolt 5a having an external thread 20 formed on the outer periphery thereof. On the other hand, the cylindrical portion 13 has an internal thread 21 which engages with the external thread 20 on at least one of the fixing portion 17 and the opening / closing portion 18. . The holding hole 12 of the cylindrical portion 13 forms a circular hole when the arc-shaped concave portion 12a of the fixing portion 17 and the arc-shaped concave portion 12b of the opening / closing portion 18 abut against each other, and at least the arc-shaped concave portions 12a and 12b are formed. A female screw 21 is formed on one side.

In the case of the illustrated example, the arc-shaped concave portion 12 of the fixing portion 17 is used.
a, a female screw 21 is formed in the
b does not have internal threads. However, conversely, the female screw 21 may be formed in the arc-shaped concave portion 12b of the opening / closing portion 18 and the female screw may not be formed in the arc-shaped concave portion 12a of the fixing portion 17.

According to the present invention, the arc-shaped concave portions 12a and 12b are provided.
It is not denied that the female screw 21 is formed so as to straddle both of them, and the male screw 20 of the anchor bolt 5a is screwed with the entire holding hole 12; Because there is rattling due to clearance and the like in the openable and closable part between the parts 18,
There is a possibility that the pitch of the female screw 21 may be misaligned between the arcuate concave portions 12a and 12b and may not be suitable for the male screw 20. On the other hand, as shown in the illustrated embodiment, if the female screw 21 is formed on one of the arc-shaped concave portions 12a and 12b and the female screw is not formed on the other, the female screw 21 is always the male screw of the anchor bolt 5a. 2
Advantageously, it engages exactly with zero.

The opening / closing section 18 and the fixed section 1 are attached to the cylindrical section 13.
A fixing means 22 for detachably fixing the two in a state in which they are closed to each other is provided. In the case of the example shown in FIG.
Reference numeral 2 denotes a ring 23 externally inserted so as to be slidable in the axial direction and the circumferential direction of the cylindrical portion 13, and a guide groove 24 for guiding the sliding of the ring 23 is formed on the outer peripheral surface of the fixed portion 17. doing. As shown in FIG. 2C, the guide groove 24 has a vertical groove 24 a extending in the axial direction of the fixing portion 17, and a closed holding member that bends from the vicinity of both ends of the vertical groove 24 a in the circumferential direction of the fixing portion 17. A groove 24b and a standby holding groove 24c extend, and a protrusion 23a provided on the inner peripheral surface of the ring 23 is slidably fitted in the guide groove 24.

Therefore, when the anchor bolt 5a is held and fixed by the holder 11, the opening / closing portion 18 is opened, the anchor bolt 5a is set in the arc-shaped concave portion 12a of the fixing portion 17, and the male screw 20 is engaged with the female screw 21. After closing the opening / closing portion 18 toward the fixing portion 17 in the fitted state, as shown in FIG.
a, the ring 23 is rotated in the circumferential direction of the cylindrical portion 13 so that the protrusion 2
In the state where 3a has entered the closing holding groove 24b, the fixing portion 17
The opening and closing section 18 is held and fixed by a ring 23.
At this time, as shown in FIG.
Is formed in the direction opposite to the normal rotation direction, the ring 23 exerts an inertia force so that the projection 23a always enters the closing holding groove 24b during the normal rotation driving of the holder 11. In addition, there is no fear that the opening and closing portion 18 is opened due to the ring 23 floating unexpectedly during the rotation work. Also, during this rotation operation, the male screw 20 of the anchor bolt 5a is engaged with the female screw 21 of the fixing part 17, and the holder 11 is rotated in the direction in which the two screws 20, 21 are tightened.
The first rotational driving force is transmitted favorably to the anchor bolt 5a.

On the other hand, from the anchor bolt 5a to the holder 1
1 is removed, the ring 23 is turned to
a from the closed holding groove 24b and moved to the vertical groove 24a, as shown in FIG.
By sliding along the line a toward the tail end of the cylindrical portion 13, the opening / closing portion 18 can be opened by releasing the constraint of the ring 23, so that the holder 11 can be easily removed from the anchor bolt 5a. . At this time, if the ring 23 is further rotated so that the protrusion 23a enters the standby holding groove 24c, the ring 23 does not move in the axial direction of the holder 11 due to its own weight or the like.

(Second Embodiment) In a second embodiment shown in FIG. 3, the anchor 5 is composed of a steel rod 5b of different diameter provided with a node 25 and / or a rib 26 on the outer periphery. 13 has a groove 27 and / or a groove that engages with the node 25 and / or the rib 26 on at least one of the fixing portion 17 and the opening / closing portion 18.
Or 28 is formed. That is, the different diameter steel bar 5b is
When only the groove 27 is formed in the fixing portion 17 and / or the closing portion 18, only the groove 27 that engages with the node 25 needs to be formed. When only the groove is provided, only the groove 28 that engages with the rib 26 may be formed in the fixing portion 17 and / or the closing portion 18. And rib 26
When both are provided, the fixing portion 17 and / or the closing portion 18 are provided with the groove 27 engaging with the node 25 and the rib 2.
A groove 28 that engages with the groove 6 may be formed.

In the case of the illustrated example, the arc-shaped concave portion 12 of the fixing portion 17 is used.
a, grooves 27 and / or 28 are formed, and no such grooves are formed in the arc-shaped concave portion 12b of the opening / closing portion 18. However, conversely, the arc-shaped recess 12b of the opening / closing section 18
The groove 27 and / or 28 may be formed in the groove, and such a groove may not be formed in the arc-shaped concave portion 12 a of the fixing portion 17.

According to the present invention, the arc-shaped concave portions 12a, 12b
It is not denied that the grooves 27 and / or 28 are formed so as to straddle both of them so that the nodes 25 and / or the ribs 26 of the different diameter steel bar 5b are engaged with the entire holding holes 12. However, in this case, since the openable and closable structural portion between the fixing portion 17 and the opening and closing portion 18 has backlash due to clearance or the like, the grooves 27 and / or 28 are not continuous with each other between the arcuate concave portions 12a and 12b. There is a possibility that a situation may occur in which the ribs 26 do not conform to the nodes 25 and / or the ribs 26. On the other hand, as shown in the illustrated embodiment, the grooves 27 and / or 28 are formed in one of the arc-shaped concave portions 12a and 12b, while the grooves 27 are not formed in the other. And / or 28 are always different diameter steel bars 5b
This is advantageous because it accurately engages with the joint 25 and / or the rib 26.

Since the other structure is the same as that of the first embodiment, the same reference numerals are given in FIG. 3 and the above description is cited.

(Other Embodiments) In the above embodiment, the opening / closing mechanism of the cylindrical portion 13 divided in the radial direction is as follows.
Although the opening / closing section 18 has a rotatable configuration with the pivot 19 as a fulcrum with respect to the fixed section 17, the present invention is not limited to such a configuration, and employs a link mechanism that allows the opening / closing section 18 to open and close. Alternatively, the opening / closing section 1 may be
A mechanism in which the holding member 12 slides in the axial direction to open and close the holding hole 12 may be employed. In short, the opening and closing part 18 may be connected to the fixing part 17 so as to be freely openable and closable.

Further, as the fixing means 22, the ring 23 slidable on the cylindrical portion 13 has been exemplified in the above embodiment, but the present invention is not limited to such a configuration, and for example, a flexible hose may be fastened. For this purpose, a generally used hose band may be used to hold the tubular portion 13 in a detachable manner, or alternatively, a flange overlapping each other is provided at the abutting portion of the fixed portion 17 and the opening / closing portion 18, and both flanges are connected to each other. A configuration in which the opening / closing unit 18 and the fixing unit 17 are removably fixed to each other may be adopted in a state where the opening / closing unit 18 and the fixing unit 17 are closed to each other.

[0029]

According to the first aspect of the present invention, when a method for implanting an adhesive anchor in a skeleton is carried out, a double nut 7a is previously provided for each anchor 5 as in the prior art. , 7b, and the troublesome work of removing the double nuts 7a, 7b after planting the anchors one by one, and the holder 11 can hold and release the anchors 5, so that the work efficiency is extremely low. Can be improved. In addition, the holders 11 need only be supplied in a number corresponding to the number of workers, and the number of double nuts 7a and 7b corresponding to the number of the anchors 5 is not required unlike the related art, so that it is economical. .

In particular, according to the present invention, the cylindrical portion 13 having the holding hole 12 for holding the anchor 5 is provided with the fixing portion 17 and the opening / closing portion 18 divided in the radial direction. Are openably and closably connected to each other, and the detachable fixing means 22 is provided. Therefore, the work of holding and releasing the anchor 5 can be performed quickly and easily, and the work time is shorter than that of the conventional technique. Shortening is possible and work efficiency can be greatly improved.

Further, according to the present invention, the cylindrical portion 13 is fixed to the fixing portion 17 and the opening / closing portion 1 with respect to the anchor 5 composed of the anchor bolt 5 a having the male screw 20 formed therein.
8 is formed with a female screw 21 that engages with the male screw 20, so that the anchor 5 and the holding hole 1 are formed.
Between the two can be engaged to prevent idle rotation,
The rotational driving force of the holder 11 can be suitably transmitted to the anchor 5. In this case, if the female screw 21 is formed only on one of the fixing portion 17 and the opening / closing portion 18 and the other is not provided with such a female screw, the openable and closable structural portion has rattling due to clearance or the like. However, the male screw 20 of the anchor 5 can be reliably engaged with the female screw 21 of the cylindrical portion 13, which is advantageous.

Further, according to the present invention described in claim 3,
With respect to the anchor 5 composed of the different diameter steel rods 5b having the nodes 25 and / or the ribs 26, the cylindrical portion 13 is provided on at least one of the fixing portion 17 and the opening / closing portion 18 with the nodes 25 and / or
Since the groove 27 and / or 28 engaging with the anchor 6 are formed, an engagement state of preventing the idle rotation between the anchor 5 and the holding hole 12 is enabled, and the rotational driving force of the holder 11 is applied to the anchor 5. And can be suitably transmitted.
At this time, if the grooves 27 and / or 28 are formed only in one of the fixing portion 17 and the opening / closing portion 18 and the other is not provided with such a groove, the structure portion which can be opened / closed by a clearance or the like. Even in the case where there is backlash, the joint 25 and / or the rib 26 of the anchor 5 can be securely engaged with the groove 27 and / or 28 of the cylindrical portion 13, which is advantageous.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state where an anchor is held using a holder according to a first embodiment of the present invention.

FIGS. 2A and 2B show a holder according to a first embodiment of the present invention, wherein FIG. 2A is a perspective view showing a holder in a closed state from a tail end side, and FIG. (C) is a perspective view showing the sliding mechanism of the fixing means from the front end side of the holder.

FIG. 3 is a longitudinal sectional view showing a state where an anchor is held using a holder according to a second embodiment of the present invention.

FIG. 4 shows a conventional anchor implantation method, and (A)
Is a cross-sectional view showing a step of drilling a mounting hole, (B) is a cross-sectional view showing a step of inserting an adhesive capsule into the mounting hole, and (C) is a cross-sectional view showing a step of driving and rotating an anchor into the mounting hole. FIG. 3D is a cross-sectional view showing a state where the double nut is removed after curing and curing of the adhesive.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 3 Mounting hole 4 Capsule 4a Adhesive 5 Anchor 5a Anchor bolt 5b Different diameter steel rod 11 Holder 12 Holding hole 13 Cylindrical part 14 Rotation drive tool 15 Connection part 17 Fixed part 18 Opening / closing part 20 Male screw 21 Female screw 22 Fixing means 25 Section 26 rib 27 groove 28 groove

Claims (3)

(57) [Claims] 1. A holder having a holding hole for holding an anchor, the holder being for rotatingly inserting an anchor into a mounting hole which is pierced in a skeleton and containing an adhesive therein, A connection portion connected to a rotary driving tool, the cylinder portion includes a fixed portion and an open / close portion divided in a radial direction, and the open / close portion and the fixed portion are connected to each other so as to be freely opened and closed. And a fixing means for detachably fixing the opening / closing part and the fixing part to each other in a state where they are closed to each other. 2. The anchor according to claim 1, wherein said tubular portion is formed on at least one of a fixed portion and an opening / closing portion with a female screw engaged with said male screw.
4. A rotary drive holder for the adhesive anchor according to 4. 3. An anchor having a node and / or a rib, wherein the tubular portion has a groove formed on at least one of the fixed portion and the opening / closing portion to engage with the node and / or the rib. The rotary drive holder for the adhesive anchor according to claim 1.