JPS64194B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for attaching screws to a temporary concrete frame for attaching a buried object such as an outlet box to be buried in a concrete building.

In concrete buildings, outlet boxes for electrical wiring are buried. For construction reasons, the outlet box is generally buried by constructing temporary frames on both sides, attaching the outlet box to the inner surface of the temporary frame, and then pouring concrete between the temporary frames. Here, the temporary frames are erected at fairly narrow intervals, and the outlet boxes are installed in a deep place that cannot be reached by human hands, so the outlet boxes cannot be installed using normal methods.

Therefore, we had no choice but to make a hole through each outlet box mounting position in the temporary frame, insert a hook bolt into the through hole from the outside, lower the outlet box from the upper end of the temporary frame to a deep position, and insert the hook provided in the outlet box. The piece was engaged with a hook bolt, and then the hook bolt was tightened from the outside of the temporary frame. However, this requires at least two workers: one to insert the hook bolts from the outside, and one to climb onto the top of the temporary frame and lower the outlet box from there. Furthermore, the person inserting the hook bolt cannot see the outlet box at all because it is obstructed by the temporary frame, and therefore has no choice but to engage the outlet box without seeing it, which is extremely inefficient.

It is an object of the present invention to overcome these drawbacks and to enable a single worker to easily and reliably install a buried object such as an outlet box.

However, recently, as a device that can be operated by one person, a base 2 is fixed in a box 1 as shown in FIGS. 1 and 2, and a screw shaft 3 is provided protruding from the base 2.
It has been proposed that a reciprocating member 4 is screwed onto a screw shaft 3, and a wood screw 5 is provided protruding from the retracting member 4. This is an invention related to Japanese Patent Application Laid-Open No. 55-86317. By rotating the advance/retreat member 4 with the box 1 fixed by the tensioning device 6, the wood screw 5
is screwed into the temporary frame 7, and the box 1 is attached to the temporary frame 7. In the case of this device, a step is required to directly accommodate various parts such as the screw shaft 3 reciprocating member 4 base 2 in the box 1, and a tensioning device 6 is required.
This requires a cumbersome process of installation and removal, leading to a decrease in efficiency due to an increase in the number of work steps.

The present invention eliminates such drawbacks and allows for various sizes,
Another object of the present invention is to provide a highly versatile device to which a buried object such as an outlet box can be attached.

The main feature of the present invention is that the screw is first attached to the temporary frame, and then an embedded object such as an outlet box is attached to the screw. Japanese Patent Application Laid-Open No. 55-86317 where this dot screw 5 and box 1 are installed at the same time.
It is different from the invention related to.

Now, the drawings are examples of the present invention, and the present invention will be specifically explained below according to the examples.

(A) First, claims 1, 2, and 3
The inventions described in Sections 1 and 8 will be mainly explained.

In FIG. 3 showing the side view of the entire device, 11
is the rotational drive shaft. Reference numeral 12 denotes a long operation box housing the rotary drive shaft 11, and a scale portion 13 for detecting the screw mounting height position is provided on the peripheral wall of the operation box. 14 is a box provided at the lower end of the operation box 12. FIG. 4 is a perspective view, and FIG. 5 is a front view.

Further, FIGS. 6 and 7 show the inside of the box body 14, and as is clear from these figures, the rotary drive shaft 11 has a worm 15 at its lower end. Reference numeral 16 denotes a worm wheel serving as a rotational direction converter for changing the rotational direction of the rotational drive shaft 11, and the wormwheel 16 is meshed with the worm 15 so as to be rotated by the rotational drive shaft 11. Reference numeral 17 denotes a screw to be attached to the temporary concrete frame, and in this embodiment, it has a special shape as shown in FIG. That is, the head 17 of the screw 17
a has a hexagonal shape, and the neck portion 17b has a tapered shape that gradually decreases in diameter as it goes downward from the lower end of the head portion 17a, and a collar-shaped stopper 17c is provided at approximately the middle position. A male screw 17d is provided at the lower part of the stopper 17c. Now, in FIGS. 6 and 7, reference numeral 18 indicates a bolt 1 attached to one side of the worm wheel 16 as a rotational direction converter.
This is a screw fixing portion attached by 9, and is adapted to rotate together with the worm wheel 16 due to its attachment. In this embodiment, the screw fixing part 18 has a particularly hexagonal hole 20 in the center. The hole 20 has a hexagonal shape because the screw 1
This is for the purpose of fitting the head 17a of No. 7 in a convex-concave manner.
21 is a magnet provided in the center of the worm foil 16 with the hole 20 facing therein. In the case of this embodiment shown in the drawings, parts such as the worm 15, worm wheel 16, and screw fixing part 18 are supported by providing a recess X in the box body 14 and storing the parts in the recess X. It is something. Third
In the figure, reference numeral 22 is a level that is slidably and latched to the operation box 22 and is used to check the degree of inclination of the entire device. This slides vertically from the upper end of the temporary frame.

When fixing the screw 17 to the screw fixing part 18, insert the screw 17 from the head 17a side of the hole 14a of the box body 14, and connect the hexagonal head 17a with the hexagonal head 17a. The holes 20 are fitted in a concave and convex manner. Due to this uneven fitting, the screw 17
rotates together with the screw fixing part 18. At this time, if the screw head 17a is made of a magnetic material such as steel, the screw head 17a can be attached to the magnet 2.
1 to prevent it from coming off. When the screw 17 is fixed to the screw fixing portion 18 in this manner, the screw head 17a is only fitted into the hole 20 in an uneven manner, so that the screw 17 can be removed. It can be said. Particularly in the case of this embodiment, as shown in FIG.
Since a is opened downward without expanding, it is easier to remove it. The hole 2 should be made so that when the screw 17 is fixed, the tip of the screw 17 will be exposed about 2 to 3 threads as shown in FIG.
It is preferable to set the length of 0 or the length of the screw 17.

When the rotary drive shaft 11 is rotated with the screw 17 fixed as described above, this rotation is decelerated through the worm 15 and the worm wheel 16, and the rotation is slowed down through the screw fixing part 18 and further fixed thereto. is transmitted to screw 17 and therefore screw 1
7 rotates. Therefore, if the exposed tip portion of the screw 17 is bitten into the temporary frame etc., as the screw 17 rotates, the screw 17 will move forward in the direction of arrow A shown in FIG. Here, the worm wheel 16 serving as a rotational direction converter functions to convert the rotation of the rotary drive shaft 11 into the forward rotational direction of the screw 17.

Now, how to attach the screw 17 fixed to the screw fixing part 18 to the temporary frame will be explained in more detail with reference to FIGS. 9 to 11. (In this case, unlike the one shown in FIG. 3, a cover 23 is attached.) First, as shown in FIG. 9, the entire apparatus M is lowered from the upper end side of the temporary frame 24. At this time, if the height position is detected by the scale part 13 through the expansion and contraction of the operation box 12 and the cover 23, it is convenient because the screw 17 mounting height position will not be mistaken. Also, at this time, use the spirit level 22 to check whether the device M is tilted. If it is tilted, the screw 17 cannot be installed accurately at the predetermined installation position, and even if the height position is accurately determined using the scale part 13, the advantages cannot be fully demonstrated. occurs. When the point level 22 is provided, the above-mentioned problem does not occur because the inclination of the device M can be reliably detected and the inclination can be immediately corrected. This is level 2
This is the effect of providing 2. Once the device M is in the normal position in this way, by pressing the device M in the direction of arrow C as shown in FIG. Make it bite into 24. And the first
A hand-held electric drill 25 or the like as shown in FIG. 1 is set on the upper end of the rotary drive shaft 11 and driven. Of course, it may be driven by other means than the hand-held electric drill 25. As a result of such driving, rotation is transmitted to the screw 17 via the worm 15, worm wheel 16, and screw fixing portion 18, and the screw 17 automatically screws into the temporary frame 24 by self-tapping.
Then, the screw 17 advances until the stopper 17c comes into contact with the surface of the temporary frame 24. In the case of this embodiment, since the screw 17 is provided with a stopper 17c as shown in FIG. 8, there is an advantage that the screw 17 does not spiral any further. Screw 1 like this
7 is attached to the temporary frame 24, the entire device M is pulled up and the screws 17 are removed from the holes 14a of the box body 14, thereby completing the attachment of the screws 17.

The method of attaching the screw 17 is not limited to the case shown in FIG.
A bridge fitting 26 may be provided to hold this between the temporary frames 24. This bridge trestle 26 has a rectangular frame 26a provided at its center, and legs 26b at both ends. This leg 26b
In this embodiment, it has a sharp shape so that it can bite into the upper end of the temporary frame 24, but instead of this, it may be fixed to the upper end of the temporary frame 24 with a screw or the like. In the case of this embodiment, the height is adjusted by inserting the screw 26e of the frame 26a into the desired position of the device M, and by moving the upper end of the device M in the direction of arrow D as shown in FIG. The lower end of the device M is made to make a pendulum movement in the direction of the arrow E using the screw 26e as a fulcrum, and this pendulum movement causes the tip of the screw 17 to bite into the temporary frame 24. When the bridge member 26 is used in this manner, there is a risk that the device M may tilt around the leg 26b as shown by the two-dot chain line in FIG. 11 due to circumstances such as the leg 26b being sharp. If the upper end side of the device M, which is the side closer to the operator's hand, is even slightly tilted, the vicinity of the screw 17 located at a position considerably lower than the leg 26b will be tilted by a considerable amount. When this point level 22 is provided, there is an advantage that inclination can be reliably detected and corrected immediately, as described above.

Now, once the screws 17 have been installed in the predetermined positions of the temporary frame 24 using the device M as described above, it is next time to insert the buried object 27 such as an outlet box into the temporary frame 24 as shown in FIG. It is installed by lowering it from the upper end and hooking it onto the screw 17. As described above, the device M according to the present invention is used to attach only the screws 17 to the temporary frame 24, and to attach an embedded object 27 such as an outlet box to the attached screws 17. Thus, in the present invention, the screw 17
Since the installation of the buried object 27 is separated from the installation of the buried object 27, even if the buried object 27 has various sizes and shapes, the locking tool 28 is attached to the buried object. It can be attached to the temporary frame 24 regardless of its size and shape. In this respect, the JP-A-55 patent was not versatile as it could only mount buried objects of extremely limited sizes and shapes.
This is very different from the case of −86317.

In the case of JP-A-55-86317, since the wood screw 5 and the box 1 are attached at the same time, the reciprocating member 4 and the screw shaft 3 must always be in a screwed state. Even when the wood screws 5 have been attached to the temporary frame 7 as shown in FIG. 2, the reciprocating member 4 and the screw shaft 3 must be screwed together. This is as stated in the specification of JP-A-55-86317, page 12, lines 6 to 8. This is because if the box 1 is not screwed together, the box 1 will immediately come off and the box 1 will not be able to be attached at all.
Therefore, in the case of JP-A-55-86317, it is an essential structural requirement that the screw shaft 3 and the advancing/retracting member 4 are always in a screwed state, and as shown in FIG. Separating the box 1 from the wood screw 5 is completely contrary to the spirit of the invention. On the other hand, the screw 17 is
In the case of the device M according to the present invention, which has a structure that can be removed from the device M, the device M itself (this is a method for removing the device M from the screw 17 attached to the temporary frame 24)
Corresponds to box 1 for 86317. ) are actively separated, leaving only the screws 17 in the temporary frame 24. In this sense, the apparatus M according to the present invention and the apparatus disclosed in Japanese Unexamined Patent Publication No. 55-86317 are fundamentally different in purpose and structure.

In addition, the screw 17 of the buried body 27 such as an outlet
In the case of the embodiment shown in the drawings, the attachment to the
As shown in Figure 2, a separate locking tool 28 is attached to the buried body 27.
At the same time, the electric conduit 29 is connected, and the operator holds the upper end of the electric conduit 29. For reference, each example of the separate locking tool 28 is shown in the first example.
It is shown in FIG. 3 to FIG. 15 and FIG. 29. In this case, 30 is a cut and raised piece, 31 is a locking hole, 32 is a bent piece, and 33 is a sloped portion for locking and guiding. Incidentally, instead of the cut and raised pieces, adhesive tape may be attached as shown in FIG. 29. When it is attached, the first
As shown in Figure 4, the bent piece 32 is pressed against the tapered part of the neck 17b of the screw 17 by its spring action,
Thereby, the buried body 27 and the locking tool 28 are fixed so that they do not move.

In the case of the embodiments shown in FIGS. 5 to 7, the worm wheel 16 is used as the rotation direction converting section.
However, the invention is not limited to this, and a bevel gear 34 may be provided as a rotational direction converting section as in other embodiments shown in FIGS. 16 and 17. 35 is a bevel gear that meshes with the bevel gear 34. Of course, the rotational direction converting section may have another structure, as long as it can convert the rotational direction of the rotary drive shaft 11. Further, in the embodiments shown in FIGS. 5 to 7, the screw fixing portion 18 has a concave-convex fitting structure having a hexagonal hole 20, but the structure is not limited to this. As in the other embodiments shown, the screw fixing portion 36 may be in the form of a spur gear. As shown in FIG. 18, a specially shaped screw 37 having a head 37a shaped like a spur gear may be provided, and this head 37a may be meshed with the spur gear 36 to form a gear meshing structure. In this case, the 17th
As is clear from the figure, the thickness l of the head 37a of the screw 37 is set smaller than the thickness L of the spur gear 35 (L>l). The screw 37 shown by the two-dot chain line in FIG. 17 is in a screwed state. Further, it goes without saying that the screw may have a shape as shown in FIGS. 19 and 20, where 38 is insert molding or resin fitted later. The screw head may have a square shape as shown in Fig. 21, a hexagonal hole may be provided in the center (in this case, a hexagonal protrusion is provided on the screw fixing part and the convex-concave fit), or a spline, etc. You can also do this.

(a) Next, an invention provided with a holder will be explained with reference to FIGS. 22 to 24. In this case as well, a rotational drive shaft, a rotational direction converting section, and a screw fixing section are provided as described above. The main feature of this case is the provision of a holder. In the embodiment shown in the drawings, in particular the magnet 3 is used as the holder.
9 and a suction cup 40 are used, and this magnet 39
The suction cup 40 is provided near the corner of the outer box 14 of the device M. In addition, the magnet 39 is used as a holder.
Of course, other means may be used instead of the suction cup 40 or the suction cup 40. 41 and 42 are separate fasteners made of metal plates or resin, for example, and are used to fix long pipes as shown in Fig. 24, as well as buried objects such as moldings and outlet boxes. It is something. These locking tools 41, 42
has a hole 43 at one end. Therefore, the 22nd
As shown in the figure, by adhering one end of the locking tools 41, 42 to the magnet 39 or suction cup 40 serving as a holding tool, the locking tools 41, 42 can be attached and detached as shown in FIGS. 22 and 23. Temporarily hold it in place so that the screw 17 can pass through the hole 43. With the screw 17 passed through the hole 43 in this manner, the screw 17 is attached to the temporary frame 24 and the wall surface of plywood, wood, etc. by the method described above. Then, since the screw 17 passes through the hole 43, the locking tool 4 is secured by the screw 17.
1 and 42 are also attached to the temporary frame 24 at the same time. After installation, if the device M is removed from the screw 17 as described above, the temporary holding by the magnet 39 and the suction cup 40 will be released naturally.

As described above, in the present invention, by skillfully utilizing the attachment of the screw 17 to the temporary frame 24 and the wall surface of plywood, wood, etc., the locking tools 41 and 42 temporarily held by the holder can be simultaneously attached. Narrow and deep temporary frame 2
This has the advantage that it can be installed inside the 4. Of course, not only the locking tools 41 and 42 that are separate from the buried body 27, but also a locking tool that is integrated with the buried body may be attached.

Incidentally, it is of course possible to attach pipes, etc. not only to the temporary concrete frame but also to the walls of completed houses, etc.

(C) Next, see Section 25 regarding inventions that include an expansion and contraction mechanism.
This will be explained with reference to FIGS. In this case as well, a rotational drive shaft, a rotational direction converting section, and a screw fixing section are provided as described above. The main feature of this case is that a telescopic mechanism is provided that allows the rotary drive shaft to be telescopic. This telescoping mechanism is the 25th
In the case of the embodiment shown in FIG. 26, a rotary drive shaft 47 is divided into a shaft 45 having a prismatic lower end and a corresponding shaft 46 having a prismatic upper end. The mechanism further includes a cylinder 48 for housing the shaft 45 and a cylinder 49 for housing the shaft 46. In this case, the shaft 45
The lower end and the upper end of the shaft 46 are slidably fitted into each other to prevent rotation due to the square shape, and with the cylinders 48 and 49 also slidably fitted, a screw 50 is inserted into the upper end of the cylinder 49. The tip of the screw 50 is fixed to the peripheral wall of the cylinder 48. In this case, the expansion and contraction can be easily adjusted by loosening the screws 50 and sliding the tubes 48 and 49. Of course, the shafts 45 and 46 also slide at the same time.

The present invention, which is provided with an expansion/contraction mechanism as described above, has the advantage that by appropriately adjusting the degree of expansion/contraction, the screws 17 and locking devices 41, 42 can be more conveniently attached to the temporary frame 24. , especially temporary frame 2
It is extremely convenient for installation in deep positions between 4 spaces.

Incidentally, the rotation of the shaft 46 and the shaft 45 can be prevented not only by the above-mentioned square shape, but also by a spline, a gear, or the like. In FIG. 26, reference numeral 51 denotes a drive source including a built-in motor.

Also, the expansion and contraction mechanism is shown in Figures 25 and 26.
Not only the embodiment shown in the figure, but also the embodiment shown in FIG.
Other embodiments shown in FIG. 8 may also be used. In the case of this embodiment, as shown in FIG. 27, a ring member 51 having a threaded portion 51a is provided on the inner circumferential wall, and the ring member 51 is attached to a cylinder 49 that accommodates the shaft 46.
At the same time, a cylindrical interlayer member 52 is fitted, and a threaded portion 48a is provided at the lower end of the tube 48, and this threaded portion 48a and the threaded portion 51a of the ring member 51 are screwed together to form the interlayer member 52. It is fixed through. In this case, by loosening the ring member 51 and sliding the cylinder 48 and the cylinder 49 relative to each other, expansion and contraction can be adjusted as appropriate. In this case, as shown in FIG. 28, a separate rotation preventing member 53 having a square hole 53a is provided, and this is fixed to the upper end of the shaft 46 with a set screw 54, and the corner of the rotation prevention member 53 is fixed to the upper end of the shaft 46 with a set screw 54. A prismatic shaft 45 is fitted into the hole 53a to prevent rotation.

[Brief explanation of drawings]

FIGS. 1 and 2 are a side view and a vertical side view showing enlarged main parts for explaining the conventional device. 3 to 29 show examples to which the present invention is specifically applied. Fig. 3 is a side view of the entire device, Fig. 4 is an enlarged perspective view of the main part of the device, Fig. 5 is an enlarged front view of the main part of the device, Fig. 6 is a cross-sectional plan view of the main part of the device, and Fig. 7 is a cross-sectional view of the main part of the device. A view corresponding to Figure 5 with the lid removed, Figure 8 is a perspective view of the screw, Figure 9 is a side view showing how to install the screw, and Figures 10 and 11 are side views showing different ways to install the screw. Figures and enlarged perspective views;
Fig. 12 is a side view showing how the embedded body is attached to the screw, Fig. 13 is an explanatory view of the locking tool, Fig. 14 is an explanatory view of the action of the bent piece, and Fig. 15 is an explanation of different locking tools. It is a diagram. 16 to 18 show other embodiments, FIG. 16 is a perspective view showing that the screw fixing part has a gear meshing structure, FIG. 17 is a schematic cross-sectional plan view of the same, FIG. 18 is a perspective view of a screw whose head is shaped like a spur gear. FIG. 19 is a perspective view of a different screw. FIG. 20 is a side view of a different screw, and FIG. 21 is a perspective view of a different screw head.
Figures 22 to 24 are explanatory diagrams of the holder, of which Figure 22 is a plan view of the locking element held in the holder, Figure 23 is a perspective view of the same, and Figure 24 is a long FIG. 3 is a perspective view of the pipe fixed with a locking tool. FIGS. 25 and 26 are explanatory diagrams of the telescopic mechanism, and FIGS. 27 and 28 are explanatory diagrams of different telescopic mechanisms. FIG. 29 is a perspective view of the fastener with adhesive tape attached. In the figure, 11 is a rotary drive shaft, 13 is a scale part, 14
is a box body, 16 is a worm foil (rotation direction conversion part), 17 is a screw, 18 is a screw fixing part, 20 is a hole,
22 is a spirit level, 24 is a temporary frame, 27 is a buried body such as an outlet, 28 is a locking tool, 34 is a bevel gear (rotation direction changing part), 36 is a screw fixing part, 39 is a magnet (holder), 40 indicates a suction cup (holder), and 47 indicates a rotational drive shaft.

Claims (1)

[Scope of Claims] 1. A rotational drive shaft; a rotational direction converter that is rotated by the rotational drive shaft and converts the rotation of the rotational drive shaft into a forward rotational direction of the screw; and a rotational direction converter that is provided to rotate together with the rotational direction converter. A screw fixing device for attaching a screw for installing a buried object to a temporary concrete frame, comprising a screw fixing part that fixes the screw in a removable manner. 2. The screw mounting device according to claim 1, wherein the screw fixing portion has a concave-convex fitting structure. 3. The screw mounting device according to claim 1, wherein the screw fixing portion has a gear meshing structure. 4. The screw mounting device according to claim 1, wherein the rotary drive shaft has a scale portion on its operation box. 5. A rotational drive shaft, a rotational direction converter that is rotated by the rotational drive shaft and converts the rotation of the rotational drive shaft into the forward rotational direction of the screw, and a rotational direction converter that is provided to rotate together with the rotational direction converter so that the screw can be removed. For attaching a screw for attaching a buried object to a temporary concrete frame, comprising a screw fixing part for fixing the screw, and a holder for removably temporarily holding a locking device having a hole in a position where the screw passes through the hole. screw mounting device. 6 a rotational drive shaft, a rotational direction converter that is rotated by the rotational drive shaft and converts the rotation of the rotational drive shaft into the forward rotational direction of the screw, and a rotational direction converter that is provided to rotate together with the rotational direction converter so that the screw can be removed. A screw attachment device for attaching a screw for attaching a buried object to a temporary concrete frame, comprising a screw fixing part for fixing the screw and an expansion mechanism for making the rotary drive shaft expandable and retractable. 7. The screw mounting device according to claim 6, wherein the rotary drive shaft has a scale portion on its outer case. 8 a rotational drive shaft; a rotational direction converter that is rotated by the rotational drive shaft and converts the rotation of the rotational drive shaft into a forward rotational direction of the screw; and a rotational direction converter that is provided to rotate together with the rotational direction converter so that the screw can be removed. A screw fixing device for attaching a screw for attaching a buried object to a temporary concrete frame, comprising a screw fixing part for fixing and a level provided at the upper end of an operation box of a rotary drive shaft.