JPH07113284A - Method and device for screw fastening post-mounting member for existing body - Google Patents

Abstract

PURPOSE:To increase the efficiency of the work to fasten an existing fixed body and a post-mounting member against each other by means of screws by a method wherein a non-visually observed nut on the existing fixed body side is easily positioned corresponding with a bolt on the after-mounted member side. CONSTITUTION:A nut 14 is held at an existing fixed body, such as a furring for ceiling A, in a temporarily locked state to be slidable but non-rotatable and meanwhile a bolt 23 corresponding to the nut is held at a post-mounting member, such as a ceiling panel B, in a temporarily locked state to be rotatable but non-slidable. The bolt and nut are positioned for coincidence with each other in a way that a guide wire 28 is removably inserted in the nut from the surface side of the post-mounting member after insertion of it through the bolt. Thereafter, the guide wire 28 is removed and the bolt is fastened against the nut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw fastening method for a retrofit member to an existing fixture and a screw fastening apparatus therefor.

[0002]

2. Description of the Related Art For example, when constructing a building, the upper edge of the building is used as an existing fixture or skeleton, and a concrete ceiling panel is to be retrofitted to it, a bolt is attached to the ceiling panel and a nut is attached to the edge. It is installed correspondingly,
In practice, the ceiling panel is lifted up by a crane and the like is brought into close contact with the lower surface of the field rim, and then the bolts and nuts are fastened at a large number of scattered spots.

[0003]

However, the above-mentioned nut is on the back side of the ceiling panel and is in a blind state where it cannot be seen from the front side, and the back space between the ceiling panel and the field rim is limited to the body of the operator. Since even the operator who should hold the nut cannot insert it, it is extremely difficult to properly position and match the bolt and nut even if working under the supervision and supervision of many people. It cannot be fastened easily and easily from the front side of the ceiling panel.

As far as such a problem is concerned, not only the ceiling panel of the building but also the floor panel, the wall panel, and other comparatively large or heavy retrofitting members, as long as the screw fastening work is performed under the above-mentioned constraint conditions, It can be said that exactly the same thing occurs in various technical fields of assembling and fixing to an existing fixed object, especially with the use of a large number of the above bolts and nuts,
It is a bottleneck for work efficiency.

[0005]

DISCLOSURE OF THE INVENTION The present invention is intended to improve the above-mentioned problems, and as a method of fastening the post-installed member to an existing fixed object in terms of a structure therefor, the existing fixed object such as a field edge is used as the back side, and When assembling and fixing a retrofitting member such as a ceiling panel to the fixed object from the front side with a screw fastener, the existing fixed object is held in a temporarily fixed state in which the nut can slide but does not rotate, and corresponds to the nut. In addition to holding the bolt to the post-installed member in a temporarily fixed state that can rotate but does not slide,

A positioning guide wire is inserted through the nut from the front side of the post-installed member through the nut, and the bolt and nut are positioned and matched by the leading action of the guide wire, and then the guide wire is pulled out. To tighten the bolt against the nut,
The first feature is that the retrofit member is rotated from the front side,

Similarly, when an existing fixed object such as a field edge is used as a back side and a retrofitting member such as a ceiling panel is assembled and fixed to the existing fixed object from the front side by a screw fastener, a nut can be slid on the existing fixed object. Is held in a temporarily fixed state in which it does not rotate, while a bolt corresponding to the nut is held in a retrofit member in a temporarily fixed state in which it can rotate but does not slide, and

A positioning guide wire previously attached to the bolt as a planting state on the back side is inserted into the nut so as to penetrate therethrough, and the bolt and the nut are positioned and matched by the leading action of the guide wire. A second feature is to rotate the guide wire from the front side of the retrofit member in order to tighten the bolt with respect to the nut with the guide wire attached to the bolt.

Further, as a screw fastening device used for carrying out the above method, a bolt escape hole formed through the existing fixed object such as the upper edge of the structure and a ceiling panel to be assembled and fixed to the existing fixed object from the front side. A post-installed member such as a rotary operation tool receiving hole penetratingly formed so as to correspond to the bolt escape hole and a bolt receiving hole of the existing fixture so that a nut receiver is provided on the back side thereof. hand,
A nut with a collar plate held in a temporarily fixed state that can slide but does not rotate and a nut that can be rotated through a bolt receiver to the rear side of the retrofitting member so as to straddle the rotation operation tool receiving hole A square holed bolt that is held in a temporarily fixed state where it does not slide and that has a guide wire receiving hole penetratingly formed on its own rotation axis, and a turning operation tool receiving hole and a guide wire receiving hole from the front side of the retrofit member. After that, it consists of a positioning guide wire such as a wire that has both flexibility and rigidity that is inserted and penetrated into the nut.

The guide wire is inserted and guided so that the bolt on the post-mounting member side and the nut on the existing fixed object side can be aligned and aligned, and the guide wire is removed after the alignment is aligned. From the turning operation tool receiving hole of the retrofitting member released by the above, insert and lock the turning operation tool such as a wrench into the square hole of the bolt, and tighten the bolt to the nut. It is characterized in that it is set so as to be rotated from.

[0011]

According to the screw fastening method of the first and second inventions, the nut as the screw fastener for assembling and fixing the retrofit member to the existing fixture cannot be seen from the front side of the retrofit member, or the retrofit member. Even under the condition that even the operator of the nut cannot insert it into the space between the existing fixture and the existing fixture, the bolt retained by the subsequently attached member and the nut retained by the existing fixture However, because the positioning guide wire that is inserted and penetrated from the front side leads to the correct positioning and alignment, it is very efficient and easy to attach the retrofit member to the existing fixture through the stable screw fastening work of both. It can be assembled and fixed to, and its workability and labor saving are remarkably excellent.

That is, while a nut as a screw fastener is held in an existing fixed object in a temporarily fixed state in which it is not rotatable while exhibiting the flexibility of sliding, the bolt corresponding to the nut is a post-installed member. In addition, since it is held in a temporarily fixed state in which it can rotate but cannot slide, it is possible to easily and correctly align the bolts and nuts based on the leading action of the positioning guide wire. In order to tighten the bolt, the bolt can be stably and surely rotated.

Further, according to the screw fastening device of the third aspect of the invention, it is of course simple and sufficient as a necessary constitution for obtaining the above-mentioned action and advantageous in mass production, and the positioning guide wire is flexible and rigid. Even if the space between the rear surface of the existing fixture and the rear member changes greatly, it is possible to maintain a stable leading action of the positioning guide wire without being affected by the change.

Further, since the nut is provided with the collar plate, it is easy to receive the bolt and the positioning guide wire for the bolt fixing hole of the existing fixed object, and it is possible to open the bolt fixing hole as large as possible. As a temporary fixing state that does not fall off over the hole, it is possible to secure a large degree of freedom of sliding along the existing fixed object, so that the fastening work with the bolt can be performed more smoothly.

On the other hand, the bolt is provided with a square hole, has a guide wire receiving hole penetrating along the rotation axis thereof, and is in a temporarily fixed state over the rotation operation tool receiving hole of the post-installed member. Since it is held on the back side of the retrofitting member, the positioning guide wire can be pulled out, and a turning operation tool such as a wrench from the front side of the retrofitting member is passed through the turning operation tool receiving hole that is released after the removal. Thus, the bolt can be easily rotated and operated, which is extremely convenient.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. In FIGS. 1 to 4, the building edge (A) is an existing fixed object, the ceiling panel (B) is a retrofit member, and the latter is a point. An example of construction in which the former is assembled and fixed to the former by a large number of distributed screw fasteners is shown.

The field edge (A) is made of angle steel,
Field rim receiver (11) butt welded to its vertical surface
And a plurality of suspension bolts (12) screwed and fastened thereto, the suspension bolts (12) are suspended above the ceiling of the building first. The FC plate to which the suspension bolt (12) is attached is not shown.

(13) is a plurality of bolt escape holes penetratingly formed on the horizontal surface of the field edge (A) in a scattered distribution state maintaining a required interval, and (14) is a plurality of nuts related to the screw fastener. There is a large square collar plate (1
The bolt escape holes (13) can be opened as much as possible by integrating 5) respectively, and the bolt escape holes (13) can be easily set while accepting bolts and positioning guide wires described later. It is placed on the horizontal surface of the field edge (A) from the back side in a state in which it cannot be removed from the field.

(16) is a temporary fixing for holding the nuts (14) with the collar plates (15) along the horizontal plane of the field edge (A) while allowing the nuts (14) to slide, but not to rotate. It is a nut receiver and is integrally erected from the horizontal surface of the field edge (A) to the back side so as to surround and regulate the above-mentioned flange plate (15) within a certain range (w).

In this case, in the illustrated embodiment, the nut receiver (16), together with the vertical surface of the field edge (A), partially surrounds the collar plate (15) of each nut (14). Total 3
It is embodied from a sheet of metal plate and these are connected (A)
Is welded to the horizontal surface of the nut, but by bending the upper end of each metal plate further inward, the nut (14)
However, in tightening work with bolts, which will be described later, it is possible to prevent the risk of levitationally retracting from the horizontal surface of the field edge (A).

(17) is a communication hole opened at the center of each collar plate (15), needless to say, the screw hole (18) of the nut (14) itself and the bolt escape hole (A) of the field edge (A). 13), but the opening diameter (d ₁ ) thereof is preferably sized at the same level as the bolt escape hole (13) at the smallest.

Further, the communication hole (17) is formed, for example, in a downward conical shape so that a bolt and a positioning guide wire, which will be described later, can be smoothly received into the screw hole (18) of the nut (14). It is desirable to induce it.

On the other hand, the ceiling panel (B) to be retrofitted with the above frame (A) as a frame is made of concrete, and this has a frame (A) at the stage of factory production.
A plurality of turning operation tool receiving holes (19) corresponding to the above-mentioned bolt escape holes (13) are formed.

(20) is each tool receiving hole (19)
Is a bolt receiver extending in a relational state orthogonal to the above-mentioned field edge (A) while facing the position directly above, and is also made of angle steel, and the lower end of the vertical surface thereof is the ceiling panel (B).
While being integrated into the back side of the tool, the remaining horizontal surface is laid across the tool receiving hole (19). It goes without saying that (21) is an anchor bar embedded in the ceiling panel (B) and is welded to the bolt receiver (20).

On the horizontal surface of each bolt receiver (20), a plurality of bolt receiving holes (22) corresponding to the tool receiving holes (19) are formed in a scattered distribution.

That is, the bolt receiver (20) is integrally formed as a one-legged form made of angle steel material on the back side of the ceiling panel (B). Therefore, the bolt receiving (20) is received from the remaining one side in the open state. A screw shaft portion of a bolt, which will be described later, can be inserted into the hole (22) as shown in the drawing, and the bolt can be rotated but held in a temporarily fixed state in which it cannot slide in the horizontal direction. You can

(23) is the nut (1) on the side of the field edge (A)
4) a bolt to be fastened to the ceiling panel (B), the protrusion head (24) having a diameter larger than the opening diameter (d ₂ ) of the tool receiving hole (19) in the ceiling panel (B),
It does not fall off from the tool receiving hole (19).

Then, as shown in the drawing, the screw shaft portion (25) of each bolt (23) is inserted into the bolt receiving hole (22) opening in the bolt receiver (20) from below and penetrated in an inverted posture. Originally, it is placed on the back side of the ceiling panel (B) in a temporarily fixed state.

Reference numeral (26) is a square hole cut out in the large-diameter head (24) of each bolt (23), in which a turning operation tool described later is inserted and locked from below. Become. The bolt (23) has a shape with a square hole (26), but if it can be rotated by locking a tool such as a wrench on the bolt (23), it is limited to the common hexagonal hole. Absent.

Reference numeral (27) is a guide wire receiving hole penetratingly formed along the rotation axis of each bolt (23) so as to communicate with the square hole (26), and here, a ceiling panel (B). One positioning guide wire (28) is inserted and inserted through the tool receiving hole (19) from the front side of the above so that it can be inserted and removed freely.

The guide wire (28) aligns the bolt (23) and the nut (14) with each other,
A wire that fulfills its leading function and is composed of a wire material having both appropriate rigidity and flexibility such as a wire, and particularly a guide wire for guiding a further angiographic catheter to a target site in a blood vessel,
It has a high degree of flexibility so that it can be received by the tip of a fishing rod, etc., and does not form a fixed bend (so-called bending tendency) even if an external operating force is applied from the hand side, and if the external force is released, it will be in a straight state It can be said that an inexpensive wire rod having the property of returning to is the most suitable. Moreover, it is desirable to give the upper end a roundness.

Next, FIGS. 5 and 6 show a modified embodiment of the present invention, in which the positioning guide wire (2
By inserting 8) into the screw shaft portion (25) of the bolt (23) from above, the bolt (23) is preliminarily attached to the bolt (23) as a rearing state. (29) is a guide wire receiving notch formed in the screw shaft portion (25).

Then, the bolt (2
Even after the positioning of 3) and the nut (14), the guide wire (28) is not pulled out to the front side of the ceiling panel (B), and the bolt (23) in the attached state and the nut (14) are fastened. It is supposed to do. Therefore, in the case of this modified embodiment, the guide wire (28) will be put under the ceiling of the building, so to speak, and will remain, but no trouble will occur.

Since the other constructions of the modified embodiment are substantially the same as those of the basic embodiment shown in FIGS. 1 to 4, the reference numerals corresponding to those shown in FIGS. Therefore, the detailed description will be omitted.

In assembling and fixing the ceiling panel (B) of the retrofit member to the field edge (A) of the existing fixture using the screw fastening device configured as described above, the ceiling panel (B) is fixed. To the bolt receiving hole (22) of the bolt receiver (20) attached to the back side of the screw shaft portion (2) of the bolt (23).
5) From the bottom, the bolt (23) is temporarily held by the slapping ceiling panel (B) with the bolt (23) standing upright.

Then, the ceiling panel (B) is applied to a predetermined corresponding position in relation to the field edge (A), and the rotary operation tool receiving hole (19) is opened in the ceiling panel (B). Through the bolt (23), a positioning guide wire (28) was inserted and penetrated toward the nut (14) which was preliminarily temporarily held on the back side of the field edge (A) as shown in FIGS. Above, the ceiling panel (B) is lifted by a crane or the like to approach the lower surface of the field edge (A).

Then, the above guide wire (28)
By the leading action of the bolt (2) on the ceiling panel (B) side
3) and the nut (14) on the side of the field edge (A) are positioned and matched, and then the guide wire (2)
8) Pull out as if pulling back.

Then, from the tool receiving hole (19) of the released ceiling panel (B) to the square hole (26) of the bolt (23), as shown in FIGS. ) Is inserted and locked, and the bolt (23) is pivotally operated, whereby the nut (14) on the side of the field edge (A) is locked.
It is tightened and fixed to. It goes without saying that the tool receiving hole (19) is finally subjected to joint processing.

Since the above-mentioned work can be performed from the front side of the ceiling panel (B) from beginning to end, even if the nut (14) attached to the field edge (A) cannot be visually observed from the front side, the ceiling panel (B) is also visible.
Gradually approached Noen (A), and because of close contact with each other,
Not only the human body but also the nut (14) in the mutual back space.
Even if it is not possible to insert even the operator's hand, it is possible to screw the ceiling panel (B) to the field edge (A) in an extremely efficient and orderly manner, and it is also useful for the stability of the assembled and fixed state.

[0040]

As described above, according to the present invention, the existing fixture such as the field edge (A) is used as the back side, and the retrofitting member such as the ceiling panel (B) is assembled to the existing fixture from the front side by the screw fastener. When fixing, the nut (14) is held in the existing fixed object in a temporarily fixed state in which the nut (14) can be slid but does not rotate, while the bolt (23) corresponding to the nut (14) is rotated by a retrofit member. While holding it as a temporary fixing state that does not slide even if you get it,

From the front side of the above-mentioned retrofit member, the bolt (23)
Through the nut (14) to the positioning guide wire (2
8) Insert and penetrate the guide wire (2
8) Leading action of bolt (23) and nut (14)
Positioning and matching the guide wire (28)
Is removed and the bolt (23) is rotated from the front side of the retrofit member in order to tighten the bolt (23) with respect to the nut (14). Therefore, the problems of the prior art described at the beginning can be completely improved, The workability is extremely excellent.

That is, according to the above configuration of the present invention, the positioning guide wire (28) is inserted through the bolt (23) from the front side of the retrofit member to the nut (14) located on the back side of the existing fixture. It looks like
The nut (14) is held in a non-rotatable temporary fixed state while having the freedom to slide with respect to the existing fixed object.

On the other hand, the bolt (23) corresponding to the nut (14) is held in a temporarily fixed state in which it cannot be slid but can be rotated reversely with respect to the retrofit member, and therefore the guide wire (28). Not only can the insertion of the guide wire be facilitated, but also the state where the bolt (23) and the nut (14) are aligned with each other based on the leading action of the guide wire (28) can be smoothly and correctly achieved.

Further, in the mated state, as described above, the nut (14) cannot rotate but the bolt (23) does not rotate.
The bolt (23) is attached to the nut (1
4) can be securely tightened and rotated,
The rotating operation can be performed easily and efficiently from the front side of the retrofit member, as in the case of the inserting / removing operation of the guide wire (28).

As a result, as described at the beginning, the provisional nut cannot be visually inspected from the front side of the retrofitting member, and the human operator as well as the operating hand of the nut must be inserted into the space behind the retrofitting member and the existing fixture. It is possible to perform screw fastening work of the retrofitting member to the existing fixed object with extremely high efficiency, even under the condition of being unable to do so.
Remarkably excellent in labor saving.

Then, as described in claim 2, a positioning guide wire (28) with the nut (14) is attached to the bolt (23) as a planting state on the back side thereof,
Even if the guide wire (28) is used so that the guide wire (28) is not removed after the positioning match, the above effect can be similarly expected.

Further, in the screw fastening device according to the third aspect, the bolt escape hole (13) is formed through the existing fixed object such as the field edge (A), and is assembled and fixed to the existing fixed object from the front side. A rotary operation tool receiving hole (19) penetratingly formed in a retrofit member such as a ceiling panel (B) corresponding to the bolt escape hole (13) and a bolt escape hole of the existing fixture. As you straddle (13),
A nut (14) with a collar plate (15) held in a temporarily fixed state that can slide but does not rotate via a nut receiver (16) to the back side thereof, and a rotation operation tool receiving hole (19) of the post-installed member. ) Is held through a bolt receiver (20) to the back side thereof so that it can rotate but does not slide, and a guide wire receiving hole (27) penetrates on its own rotation axis. The bolt (23) with the formed square hole (26) and the front side of the retrofit member are inserted into the nut (14) through the turning operation tool receiving hole (19) and the guide wire receiving hole (27). A positioning guide wire (28) having both flexibility and rigidity,

By the insertion leading action of the guide wire (28), it is determined that the bolt (23) on the post-installed member side and the nut (14) on the existing fixed object side can be positioned and matched, and the positioning is matched. Above, from the turning operation tool receiving hole (19) of the retrofit member released by pulling out the guide wire (28),
A rotary operation tool (30) such as a wrench is inserted and locked in the square hole (26) of the bolt (23), and the bolt (2)
Since 3) is configured to be rotated from the front side of the retrofit member to tighten the nut (14), the guide wire receiving hole (27) is drilled substantially for the bolt (23). In addition to the need for the positioning guide wire (28), it is possible to use a common component that is awkward, and it is sufficiently simple and sufficient as a necessary component for obtaining the above effect, and it is remarkably excellent in mass productivity.

Further, the positioning guide wire (28)
Has both flexibility and rigidity, so that the bolts (23) and nuts (14) should be positioned and matched with each other, and the material, thickness, length, etc. can be changed as well as performing a smooth leading action. Only by doing so, there is an effect that it can be quickly adapted to the space size of the back surface between the existing fixed object and the retrofit member.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a process of assembling a ceiling panel (retrofitting member) to a building edge (an existing fixed object).

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is a partially cutaway front view showing an assembled state corresponding to FIG.

4 is an enlarged cross-sectional view taken along line 4-4 of FIG.

5 is a side sectional view showing a modified example corresponding to FIG.

FIG. 6 is a side sectional view showing a modified example corresponding to FIG.

[Explanation of symbols]

 A ... Norim (existing fixed object) B ... Ceiling panel (retrofitting member) 14 ... Nut 15 ... Collar plate 16 ... Nut receiving 19 ... Rotating operation tool receiving hole 20 ... Bolt receiving 23 ... Bolt 26 ... Square hole 27 ... Guide wire receiving hole 28 ... Positioning guide wire 29 ... Guide wire receiving notch 30 ... Rotating operation tool

Claims (3)

[Claims] 1. The above-mentioned existing fixture is used for assembling and fixing a retrofitting member such as a ceiling panel (B) from the front side to the existing fixture with the existing fixture such as the field edge (A) as the back side. While holding the nut (14) on the object in a temporarily fixed state in which the nut (14) can slide but does not rotate, a bolt (23) corresponding to the nut (14) is attached to a post-installed member as a temporarily fixed state in which the nut (14) can rotate but does not slide. While holding it, the positioning guide wire (28) is inserted through the nut (14) from the front side of the retrofit member through the bolt (23), and the bolt (23) and the nut are guided by the leading action of the guide wire (28). After aligning (14) with the positioning, remove the guide wire (28),
A method for tightening a screw of an after-installed member to an existing fixed object, comprising rotating the bolt (23) from the front side of the after-installed member so as to tighten the bolt (23) with respect to the nut (14). 2. An existing fixture such as a field rim (A) is used as a back side, and a retrofitting member such as a ceiling panel (B) is assembled and fixed to the existing fixture from the front side by a screw fastener. While holding the nut (14) on the object in a temporarily fixed state in which the nut (14) can slide but does not rotate, a bolt (23) corresponding to the nut (14) is attached to a post-installed member as a temporarily fixed state in which the nut (14) can rotate but does not slide. A positioning guide wire (28), which is attached to the bolt (23) in advance as a state of being planted on the back side, is inserted into the nut (14) so as to pass through the bolt (23) to lead the guide wire (28). Due to the action, the bolt (23) and nut (1
4) Positioning and matching the guide wire (2)
8) The existing fixed object characterized by being rotated from the front side of the retrofit member in order to tighten the bolt (23) to the nut (14) with the bolt (23) still attached to the bolt (23). How to tighten the screws of the retrofit member. 3. A bolt escape hole (13) penetratingly formed in an existing fixture such as a field edge (A), and a retrofit member such as a ceiling panel (B) to be assembled and fixed to the existing fixture from the front side. In order to straddle the rotation operation tool receiving hole (19) penetratingly formed so as to correspond to the bolt escape hole (13) and the bolt escape hole (13) of the existing fixture, the back side thereof is formed. A flange plate (1) held in a temporarily fixed state that can slide but does not rotate via a nut receiving (16).
5) A temporary fixing state in which the nut (14) with the nut (14) and the rotation operation tool receiving hole (19) of the post-installed member are rotatably but not slidable to the back side of the nut through the bolt receiver (20) And a guide wire receiving hole (27) held on its own axis of rotation.
And a bolt (23) with a square hole (26) through which the rotary operation tool receiving hole (1) is formed from the front side of the retrofit member.
9) and the guide wire receiving hole (27),
A positioning guide wire (28) having both flexibility and rigidity that is inserted into and penetrates the nut (14). The guide wire (28) is inserted into the bolt (23) on the side of the retrofit member by the insertion leading action. The nut (14) on the side of the existing fixture is determined so that it can be positioned and matched, and after the positioning is matched, the guide wire (2
8) The rotation operation tool (30) such as a wrench is inserted and locked into the square hole (26) of the bolt (23) from the rotation operation tool receiving hole (19) of the retrofit member released by removing. The bolt (23) to the nut (1
4) A screw fastening device for a retrofit member to an existing fixture, which is configured to be rotated from the front side of the retrofit member so as to be tightened with respect to 4).