JPS6141380Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a locking tool for attaching a buried object to a temporary concrete frame.

In concrete buildings, buried objects such as outlet boxes and switch boxes for electrical wiring are buried. This buried body is attached by hooking and locking a protruding tool, for example, a screw, protruding from a predetermined position of the concrete temporary frame before pouring the fresh concrete. If there are circumstances such as the spacing between the temporary concrete frames being quite narrow,
It was difficult to insert the screw using normal methods.
As a result of intensive research, the inventor of the present invention has recently developed a device related to Japanese Patent Application No. 56-130773 (Japanese Unexamined Patent Publication No. 58-34764) as a device that can perform such screw insertion with an extremely simple operation. developed. This device is equipped with a rotary drive shaft, converts the rotation of this rotary drive shaft into a direction that intersects with the longitudinal direction of this shaft, thereby transmitting the rotation to the screw, and thereby positioning the screw on the inner surface of the temporary concrete frame. It is screwed into the

This invention was mainly made as part of the development of a device related to Japanese Patent Application No. 56-130773, and the purpose of this invention is to simplify the installation of buried objects such as outlet boxes and switch boxes. The point is that it can be installed on. The present invention is a locking tool that is attached to a buried object in order to attach the buried object to a protruding tool that protrudes from the inner surface of a temporary concrete frame, and includes a fixing part for fixing to the buried object, and a locking tool that is attached to the protruding tool. The locking part has a locking part for locking, and the locking part has a part of its periphery cut out and an insertion hole into which the protruding tool is fitted through the cutout.

Hereinafter, an embodiment in which the present invention is applied to a device according to Japanese Patent Application No. 130773/1980 will be described in detail. First, for convenience of explanation, the device according to Japanese Patent Application No. 56-130773 mentioned above will be explained in parentheses, and then the locking tool will be explained in parentheses.

() FIG. 1 is a side view showing the entire apparatus, FIG. 3 is a front view of the box 14 with the lid removed, and FIG. 4 is a cross-sectional plan view thereof. Here, 11 is a rotary drive shaft, 12 is a long operation box housing the rotary drive shaft 11, 13 is a height scale part for detecting the screw mounting height position provided on the peripheral wall of the operation box 12, and 15 is a rotation A worm 16 provided at the lower end of the drive shaft 11 is a worm foil for converting the rotation direction of the rotation drive shaft 11 into a direction perpendicular to the longitudinal direction of the rotation drive shaft 11. 1
Reference numeral 7 denotes a grooved screw as a protruding tool to be attached to the temporary concrete frame, and this screw 17 consists of a hexagonal head 17a, a groove 17b, a collar-shaped stopper 17c, and a male screw 17d. 18 is the bolt 19 to the worm wheel 16
20 is a hexagonal hole provided in the screw fixing part 18, 21 is a magnet, and when the head 17a of the screw 17 is made of a magnetic material, the screw 17 This is for temporarily fixing the. Now, in order to attach the grooved screws 17 fixed to the screw fixing parts 18 to the concrete temporary frame 24, the entire apparatus M is lowered from the upper end side of the temporary frame 24 as shown in FIG. 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, 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. Once the device M is in the normal position, push the device M in the direction of arrow C as shown in Figure 6 to tighten the grooved screw 1.
The exposed tip portion of 7 is inserted into a temporary concrete frame 24 made of plywood or the like. In this state, a hand-held electric drill 25 or the like is set on the upper end of the rotary drive shaft 11 and driven. As a result of such driving, rotation is transmitted to the grooved screw 17 via the worm 15, worm wheel 16, and screw fixing portion 18, and the screw 17 automatically screws into the concrete temporary frame 24 by self-tapping. Here, as shown in FIG. 9, the grooved screw 17 projects outward from the stopper 17c. The method of attaching the screws 17 is not limited to the method shown in FIG. 6, but may be carried out by providing a bridge fitting 26 for holding the device M between temporary concrete frames 24, as shown in FIGS. 7 and 8.
In this case, the screw 26e of the frame 26a is
With the height adjusted by biting into the desired position, by moving the upper end of the device M in the direction of arrow D as shown in FIG. This pendulum movement causes the tip of the screw 17 to bite into the concrete temporary frame 24, and in this state, the rotary drive shaft 11 is driven to rotate.

Now, once the grooved screws 17 as protrusions have been attached to the inner surface of the temporary concrete frame 24 in a protruding state, as shown in FIG. Attach the locking tools 30, 31, 32 to the concrete frame 24 in that state, and attach the buried object 27 to the grooved screw 17 as a protruding tool via the locking tools 30, 31, 32. It is.

() Now, the locking device, which is the main part of the present invention, will be explained in more detail. 10, 12, and 13 show respective embodiments of the locking tool. The locking tool 30 shown in FIG. 10, the locking tool 31 shown in FIG. 12, and the locking tool 31 shown in FIG. The locking tool 32 has fixing parts 33, 34, and 34 for fixing to the buried object, respectively.
It has 35. As shown in FIG. 10, the fixing portion 33 of the locking tool 30 is composed of a plate-shaped vertical surface 33a, a plate-shaped horizontal surface 33b, and a raised piece 36 provided on the vertical surface 33a. Further, as shown in FIG. 12, the fixing portion 34 of the locking tool 31 is composed of a vertical surface 34a, a horizontal surface 34b, and a cut and raised piece 37 provided on the horizontal surface 34b. Further, as shown in FIG. 13, the fixing portion 35 of the locking tool 32 is composed of a vertical surface 35a, a horizontal surface 35b, and an adhesive tape 38 provided at the bent portions of these surfaces.

On the other hand, 39, 40, 41 are locking parts for locking the grooved screw 17 as a protruding tool,
In each example shown in the drawings, it is plate-shaped. Each of these locking portions 39, 40, 41 is provided with an insertion hole 42. This insertion hole 42 is
As shown in FIG.
3 into a grooved screw 17 as a protrusion. In this example, the insertion hole 42 has an elastic bending piece 44 on the notch 43 side thereof. The elastic bending piece 44 can exhibit elasticity by bending along a fold line 45 as shown in FIGS. 14A and 14B. Elastic bending piece 4
4, the locking tools 30, 31, 3
2 is hooked and locked in the groove 17b which is the protruding part of the grooved screw 17 as a protruding tool, the first
As shown in FIG.
Due to this close contact, the locking tools 30, 31,
32 becomes even more reliable. In this example, when the elastic bending piece 44 is bent, the 14th
As shown in Figure B, the fold line 45 becomes a sloped part, which has the advantage of providing guidance during hooking and locking.

Now, the effects of using the locking tools 30, 31, and 32 will be explained. That is, the locking tool 30,
31 and 32 are provided, as is clear from the foregoing description, the buried object 27 such as an outlet box or a switch box can be easily attached to the grooved screw 17 as a protrusion. In other words, it can be easily attached to the concrete temporary frame 24.

Note that the locking device according to the present invention may be used not only in the embodiments shown in the previous drawings but also in the following manner. That is, as shown in FIG. 15, a locking tool 47 may be used that covers the opening side of the buried body 27. Furthermore, the first
As shown in FIG. 6, a locking tool 49 may be provided that has a fixing part 50, a locking part 51, and an elongated insertion hole 48 that is slightly open on the notch side provided in the locking part 51. In the case of this example, the nail 52 as a protruding tool is driven from the outside as shown in FIG. 16B with the concrete temporary frame positioned from the outside as shown in FIG. do as you like. Then, the buried body 27 with the locking tool 49 attached thereto is moved so that the buried body 27 comes into contact with the nail 52 as shown in D, and the insertion hole 48 of the locking tool 49 is inserted into the protruding part of the nail 52 from the notch side. By fitting, the embedded body 27 is attached to the nail 52 as a protrusion.

In short, the present invention is a locking tool that is attached to a buried object in order to attach the buried object to a protruding tool protruding from the inner surface of a temporary concrete frame, which comprises a fixing part for fixing to the buried object, and the protruding tool. The locking part has a part of its periphery cut out and an insertion hole into which the protruding tool is fitted through the cutout. This has the effect that it can be easily installed.

[Brief explanation of the drawing]

Figure 1 is a side view of a device for screwing in screws;
Figure 2 is a perspective view of the same, Figures 3 and 4 are a front view and cross-sectional plan view showing the internal structure, Figure 5 is a perspective view of the grooved screw, and Figures 6 to 8 are the device. FIG. 9 is a side view of the buried object being hooked onto the screw screwed into the temporary concrete frame. FIG. 10A is a side view of the locking device attached to the buried body, FIG. 10B is a perspective view of the locking device, and FIGS. 11A and B are for explaining the action of the elastic bending piece. FIG. Figure 12A is a side view of another example of the locking device attached to the buried object, Figure 12B
is a perspective view of the same locking tool. FIG. 13A is a longitudinal sectional side view of another example of the locking tool, and FIG. 13B is a perspective view of the same locking tool. FIGS. 14A and 14B are front views for explaining the elastic bending piece. Fig. 15 is a longitudinal cross-sectional side view for explaining the cited locking device, Fig. 16A,
B, C, and D are process diagrams illustrating a method of attaching an embedded object via another example of a locking tool. In the figure, 17 is a grooved screw (protruding tool), 24 is a temporary concrete frame, 27 is a buried body, 30, 31, 3
2, 47, 49 are locking tools, 33, 34, 35, 5
0 is a locking part, 42, 48 are insertion holes, 43 is a notch,
44 is an elastic bending piece, and 52 is a nail (protruding tool).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A locking device that is attached to a buried object in order to attach the buried object to a protruding tool protruding from the inner surface of a temporary concrete frame, which is a fixing device for fixing the buried object to the buried object. and a locking portion for locking to the protrusion, the locking portion has a part of its periphery cut out, and an insertion hole into which the protrusion is fitted is provided from the cutout. A locking tool for attaching a buried object to a temporary concrete frame. (2) The locking device according to claim 1, wherein the protruding device is a grooved screw, and the insertion hole is fitted into the grooved portion of the grooved screw through a notch. (3) Utility model registration claim 1, characterized in that the insertion hole has an elastic bending piece on the notch side.
or the locking device described in paragraph 2.