JPS6226501Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) The present invention relates to a buried object fixing device used to press and fix a buried object such as a buried box embedded in a concrete wall to a temporary concrete frame. .

An object of the present invention is to provide a buried object fixing device that allows a buried object to be fixed to a concrete temporary frame quickly and reliably with a simple operation.

(Prior Art) A device for fixing an embedded object such as an embedded box embedded in a concrete wall surface to a temporary concrete frame is known as described in Japanese Patent Application Laid-open No. 150239/1983. In this device, a curved guide tube is provided inside an embedding box, a curved driving body having a pointed end on the side facing the temporary concrete frame is inserted into the guide tube, and the tail end of the driving body is placed on the top side of the embedding box. It is provided so as to protrude from the side. Then, the open end of the embedded box is brought into close contact with the temporary concrete frame, and the tail end of the driving body is struck to drive and fix the tip of the driving body into the temporary concrete frame.

This conventional device has the following drawbacks.

(1) This device is built into a special box and cannot be used as is in commercially available boxes.

(2) It is not easy to strike the embedded box casting body dropped from the upper end of the temporary concrete frame to the lower part of the temporary concrete frame, requiring skill and low work efficiency.

(3) When the driving object is struck, the position of the embedded box tends to shift due to the impact, and it is not fixed in the correct position.

(4) Once the embedded box is fixed, it is difficult to remove it, and if it is not fixed in the correct position, it takes a lot of effort to remove it.

(Structure of the invention) The present invention extends the pantograph by inserting a screw rod into the top of the pantograph in the vertical direction and rotating it. protruding,
A seat plate is attached to the top of the other side, and examples will be described below based on the drawings.

In FIGS. 1 and 2, the main pantograph 1 is obtained by bending a belt-shaped steel plate into a substantially rhombus shape, and has link pieces 3 and 4 that are inclined outward on both sides of an end plate 2. are bent and integrally formed, and a link piece 6 and a link piece 7 which are inclined outward on both sides of the end plate 5 which is parallel to the end plate 2 are integrally formed, and the link piece 3 on the left side in the figure and the link piece It is integrally connected to piece 6. The link piece 4 on the right side of the figure is bent outward in parallel at its end to form a leg 8, and the link piece 7 is bent outward in parallel at its end to form a leg 9. There is. Each leg 8,9
At the distal end portions of the holder, retaining pieces 10 and 11 are formed by being bent in opposite directions. Both side edges of the end plate 2 are bent outward at right angles to form ribs 12 for reinforcement and rotation prevention, and both side edges of the end plate 5 are bent outward at right angles to form ribs 13 for reinforcement. is formed. Both side edges of each link piece 3, 4, 6, 7 are also bent outward at right angles to form reinforcing ribs 14, 15, 16, 17.
An insertion hole 18 is formed in the center of the end plate 2, and a screw hole 19 is formed in the center of the end plate 5. At the bent part between the link piece 3 and the link piece 6 on the left side of the figure, a protruding claw 2 whose side edge is bent outward at a right angle and whose tip is pointed.
0 is formed. A rectangular seat plate 21 made of synthetic resin, soft metal, or other material is attached to the legs 8, 9 so that the legs 8, 9 are partially embedded. This seat plate 21 may be provided with adhesive, adhesive tape, etc., so that it can be fixed more firmly.

A screw rod 25 for extending the pantograph 1 is provided with a threaded portion 26 at one end, and a protrusion 27 protruding from the outer periphery at the other end. A grip portion 30 is formed above the projection 27 and has an engaging projection 28 projecting from its outer periphery and a countersunk-shaped recess 29 formed therein. This screw rod 25 is inserted through the insertion hole 18, and the threaded portion 26 is screwed into the screw hole 19.
The pantograph is provided so as to be extendable by rotation of the pantograph.
The fixing device 31 obtained in this manner has a bent portion between the end plate 2 and the link pieces 3 and 4, a bent portion between the end plate 5 and the link pieces 6 and 7, and a bent portion between the link piece 3 and the link piece 6. It can be bent and stretched at the bent portion, the bent portion between the link piece 4 and the leg portion 8, and the bent portion between the link piece 7 and the leg portion 9. In the figure, 32 is a washer.

The simplest driving device for positioning and extending the fixing device 31 of the present invention between the buried body B closely attached to the temporary frame A and the temporary frame A' is shown in FIG.
To explain the drive device 40, case 4
A guide tube 42 is provided to protrude above 1, and the guide tube 4
A drive shaft 43 is rotatably installed inside the drive shaft 2, and a rotation handle 44 is attached to the upper end of the drive shaft 43. A holder 45 is connected to the lower end of the drive shaft 43 within the case 41 so that it can rotate together with the drive shaft 43. The lower surface of the holder 45 is provided with an insertion hole 46 into which the gripping portion 30 of the screw rod 25 of the fixing device 31 is inserted, and an engagement groove 48 into which the engagement protrusion 28 is inserted. The ball 47 can freely appear and appear elastically toward the surface side.
is provided, and the gripping portion 30 is inserted into the insertion hole 46.
By fitting the ball 47 into the recess 29, the fixing device 31 is held without falling off from the drive device 40. A narrow groove 49 into which the rib 12 of the pantograph 1 fits is formed in the lower surface of the case 41. The rib 12 is fitted into the narrow groove 49 to prevent the pantograph 1 from rotating.

(Function of the Invention) In order to fix the buried body B to the concrete temporary form A using the fixing device 31 of the invention, the screw rod 2
The gripping portion 30 of the holder 45 is inserted into the insertion hole 46 of the holder 45 , the engagement projection 28 is fitted into the engagement groove 48 , and the rib 12 is fitted into the narrow groove 49 of the case 41 , so that the driving device 40 holds the fixing device 31 .

Next, the fixing device 31 is dropped between the buried object B and the temporary frame A', which have been positioned in advance with respect to the temporary frame A, the seat plate 21 is turned to the buried object B side, and the prongs 20 are inserted into the temporary frame A. ’ side. Next, when the guide cylinder 42 is held with one hand and the rotary handle 44 is rotated in a predetermined direction, only the screw rod 25 rotates, the pantograph 1 gradually extends, and the prongs 20 pierce the temporary frame A'.
The buried object B is strongly pressed against the temporary frame A.

When the buried object B is sufficiently fixed, the drive device 40
When pulled up, the grip portion 30 of the screw rod 25 is removed from the insertion hole 46 of the holder 45, and the fixing device 31 and the driving device 40 are separated.

If it is desired to remove the fixed buried body B for convenience, the pantograph 1 can be reduced by rotating the screw rod 25 in the opposite direction.

(Effects of the invention) Since the present invention has the above configuration, it has the following advantages.

(1) Since it is only necessary to position it between the temporary frame and the buried object and extend it, it is versatile enough to be used with any kind of buried object.

(2) Since all you have to do is rotate the screw rod, even beginners can easily operate it without any skill required.
It has a great effect on improving work efficiency.

(3) Since no impact is applied to the buried object when the fixing device is operated, there is no disadvantage that the buried object may be displaced.

(4) Even after the buried object is fixed, it can be easily removed if necessary.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a front sectional view showing the state of use, and FIG. 3 is a sectional view showing an example of the drive device. Explanation of symbols of main parts, 1...Pantograph,
2, 5... end plate, 3, 4, 6, 7... link piece,
8, 9...leg, 18...hole, 19...screw hole,
20... prong, 21... seat plate, 25... screw rod.

Claims (1)

[Claims for Utility Model Registration] (1) An end plate 2 having an insertion hole 18 and an end plate 5 having a screw hole 19 are provided in parallel at a predetermined interval, and both sides of each end plate 2 and 5 are inclined. Link pieces 3, 4,
6 and 7 are provided in an extended manner, and the link piece 3 of the end plate 2 and the link piece 6 of the end plate 5, and the link piece 4 of the end plate 2 and the link piece 7 of the end plate 5 are connected in a dogleg shape, respectively. , each end plate 2, 5 and each link piece 3, 4,
6 and 7 and the boundary between the link pieces 3 and the link pieces 6, each having a pantograph that can be bent and expanded, and a threaded part 26 that is screwed into the screw hole 19 of the end plate 5 at one end, and the other end. The screw rod 25 is inserted into the insertion hole 18 of the end plate 2.
A buried object fixing device which is screwed into the screw hole 19 of the end plate 5. (2) At the connecting portion between the link piece 4 and the link piece 7, leg parts 8 and 9 are bent outward at the end of each link piece 47, and the link pieces 4 and 7 and the leg part 8, 9
The legs 8,
9. The buried object fixing device according to claim 1, wherein a seat plate 21 is attached to the holder 9. (3) The buried object fixing device according to claim 1 or 2, in which a claw 20 is provided to protrude outward from the connecting portion between the link piece 3 and the link piece 6.