JPH0340045Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial field of application) This invention provides a
Alternatively, the present invention relates to a joint frame for a box or paint allowance cover, which is interposed between a paint allowance cover and a wiring device to displace the opening surface of the box body to the mortar surface.

(Prior Art) As a conventional joint frame, there is a joint frame for a box as described in Japanese Utility Model Publication No. 1155/1983, which has a frame shape with a size corresponding to the box body. When using it, prepare several types of joint frames with different thicknesses in advance, and select one that corresponds to the thickness of the mortar used to finish the concrete wall surface, or combine two or more pieces as appropriate to achieve the specified thickness. I am using it as.

Therefore, there was a problem in that several types of joint frames having different thicknesses had to be manufactured and prepared in advance.

(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present invention has been developed by stacking a large number of joint frame pieces together through cuts, and cutting them at the cuts. This was done to eliminate the need to manufacture multiple types of joint frames, and to simplify the structure of the molding die by providing the joint frame with a boss equipped with a recessed part for bolt insertion that opens on the outer circumferential surface. It is something that

(Means for Solving the Problems) The present invention is a joint frame for a box or coating allowance cover in which a plurality of frame-shaped joint frame pieces are stacked together through cuts, and the joint frame has an opening on the outer peripheral surface. At least two bosses with recesses for bolt insertion are provided along the thickness direction of the joint frame, and the recesses of the bosses are provided with cuts that are continuous with cuts in other parts, and the recesses for bolt insertion are provided with cuts that are continuous with cuts in other parts. This is a joint frame for a box or coating allowance cover, characterized in that the opening surface is covered with a covering material.

(Example) Figs. 1 to 3 show a box joint frame according to the present invention.

This box joint frame A has a structure in which a plurality of rectangular frame-shaped joint frame pieces 1 are stacked together through cuts 2 by resin molding, and two pieces are placed on each opposing part of the joint frame A. A destination boss 3 protrudes inside and is provided along the thickness direction. This boss 3 is provided with a bolt insertion recess 5 that is open to the outer peripheral surface for inserting the mounting bolt 4, and as shown in FIG. A cut 2' is provided which is continuous with the cut 2 in the section. The mounting bolts 4 are for mounting the paint allowance cover C to the box body B.

Further, the opening to the outer peripheral surface of the bolt insertion recess 5 is covered with a thick tape 6.

To displace the opening surface of the box body B to the mortar surface using this box joint frame A, first cut the box joint frame A at the cut 2 portion to a thickness corresponding to the mortar thickness. here,
Since the bolt insertion recess 5 provided in the boss 3 is provided with a cut 2' that is continuous with other parts, it is easy to cut the joint frame A including the boss 3 part, and the cut surface is approximately Become the same plane.

Next, as shown in FIG. 4, the box joint frame A cut to a predetermined thickness is attached to a concrete wall W.
Apply the paint allowance cover C to the opening surface of the box body B buried in the box, and apply the paint allowance cover C to the box joint frame A.
When the mounting bolt 4 is inserted into the bolt insertion hole 7 of the coating allowance cover C and the bolt insertion recess 5 provided in the boss 3 of the box joint frame A and screwed into the threaded part 8 of the box body B, A paint allowance cover C is attached to the box body B via a box joint frame A.

In this state, mortar M is applied to the wall surface of the concrete wall W, and after the mortar M has hardened, the wiring device D and plate E are attached to the coating allowance cover C. Since the opening to the outer circumferential surface of the bolt insertion recess 5 is covered with tape 6, the mortar M does not enter the recess 5.

Further, FIGS. 5 and 6 show a joint frame A' for a coating allowance cover according to the present invention.

This joint frame A' for the coating allowance cover is made of a plurality of oval frame-shaped joint frame pieces 1' stacked together with cuts 2 in between by resin molding, and the upper and lower parts of the joint frame A' are Each boss 3 is provided to protrude inward, and a bolt insertion recess 5 for inserting a mounting bolt 9 into the boss 3 is provided with an opening on the outer peripheral surface. This concave portion 5 is provided with a cut 2' that is continuous with the cut 2 provided in other parts, and the opening surface to the outer periphery is covered with a thick tape 6.
covered with. The attachment bolts 9 are for attaching the wiring device D to the paint allowance cover C.

To displace the opening surface of the box body B to the mortar surface using this joint frame A' for coating allowance cover, first, cut the joint frame A' for coating allowance cover at a thickness corresponding to the mortar thickness. Cut it into parts.

Next, as shown in FIG. 7A, a coating cover C is attached to the opening surface of the box body B buried in the concrete wall W via the mounting bolts 4, and then the coating cover C is attached to the coating cover C. Joint frame for cover
At the same time, the mounting bolt 9 inserted into the recessed part 5 is screwed into the threaded part 10 of the coating allowance cover C, and the coating allowance cover joint frame A' is temporarily fixed to the coating allowance cover C.

In this state, mortar M is applied to the wall surface of the concrete wall W. Here, as shown in Figure 8A,
Since the opening surface of the concave portion 5 into which the mounting bolt 9 is inserted is covered with tape 6, the mortar M does not enter the concave portion 5. For this reason, after the mortar M has hardened, the mounting bolt 9 and the threaded portion 1 of the coating allowance cover C are
0 and the mounting bolt 9 can be easily removed. After removing the mounting bolt 9,
As shown in Fig. 7B, attach the wiring device D to the paint allowance cover joint frame A', and attach it to the bolt insertion hole 11 of the wiring device D and the concave portion 5 of the paint allowance cover joint frame A'. Insert the bolt 9 and screw it into the threaded part 10 of the coating allowance cover C again.

Further, the means for covering the opening surface to the outer periphery of the concave portion 5 of the joint frame A' for coating allowance cover is not limited to the thick tape as in the above embodiment, but for example, an engagement method as shown in FIG. The lid 12 may be provided with a protrusion 12a, and if this lid 12 is engaged with the opening surface of the concave portion 5 using an adhesive, the engagement strength will be further increased.

In addition, since the bolt insertion recesses 5 provided in the bosses 3 of the box joint frame A and the coating allowance cover joint frame A' configured as described above are open on the outer periphery, when molding them with a mold, As shown in Fig. 1 and Fig. 5, the molds are divided into two parts in the X and Y directions, which are perpendicular to each other, and can be combined and separated by approaching and separating them. This makes it easier, and as a result, the molding efficiency of the product is improved.

(Effects) (1) Since a large number of joint frame pieces are stacked together with cuts in between, it is possible to cut the joint frame pieces at the cuts to obtain the appropriate thickness when using the joint, making it easier to use than conventional joint frames. In addition to eliminating the need to manufacture several different types of bolts with different thicknesses, the joint frame is provided with a boss with a recessed part for bolt insertion that is open on the outer periphery, so when molding the joint frame, it is possible to
Since the molds, which are divided into two parts in two directions perpendicular to each other, need only be brought close to each other and separated from each other to be combined and separated, the structure of the mold is simplified, and as a result, the molding efficiency of the product is improved.

(2) Since the bolt insertion recess provided in the boss has a cut that is continuous with other parts, it is easy to cut the joint frame including the boss part, and
The cut surfaces are substantially on the same plane, and the joint frame and the box or coating allowance cover can be brought into close contact in a stable state.

(3) The opening surface of the recess for bolt insertion provided in the boss of the joint frame is covered with a covering material, so when applying mortar to the wall surface of the concrete wall, this mortar will not enter the recess. Therefore, after applying mortar, the mounting bolt inserted into the bolt insertion recess can be removed once and then inserted again.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the box joint frame A, and Figure 2 A and B are the lines T-T and U-U in Figure 1, respectively.
3 is an exploded perspective view of box joint frame A, box main body B, coating allowance cover C, wiring device D, and plate E; FIG. 4 is a sectional view of one construction state; FIG. The figure is a perspective view of the joint frame A' for the coating allowance cover, and FIG. Figures 7A and 7B are cross-sectional views of different construction states, and Figures 8A and 8B show the state in which the opening surface of the concave portion 5 of the joint frame A' for coating allowance cover is covered with tape 6 and not covered, respectively. FIG. 9 is a partial cross-sectional view of the state in which mortar M is applied, and is a perspective view of the lid 12 used as a covering material. Explanation of the symbols of the main parts: A: Box joint frame;
A': Joint frame for coating allowance cover, B: Box body,
C: Paint allowance cover, M: Mortar, 1, 1': Joint frame piece, 2, 2': Cut, 3: Boss, 4, 9: Mounting bolt, 5: Recessed part for bolt insertion, 6: Thick tape (Coating material), 12: Lid body (Coating material).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A joint frame for a box or paint cover, which is made by stacking a plurality of frame-shaped joint frame pieces together with cuts in between, and has an opening on the outer circumferential surface for the insertion of bolts. At least two bosses with recessed portions are provided along the thickness direction of the joint frame, and the recessed portions of the bosses are provided with cuts that are continuous with the cuts in other parts, and the opening surfaces of the recessed portions are covered with a covering material. A joint frame for a box or coating allowance cover, which is characterized by being covered. (2) The joint frame for a box or coating allowance cover as set forth in claim 1 of the utility model registration claim, characterized in that the covering material is a thick tape. (3) A joint frame for a box or for a coating allowance cover as set forth in claim 1 of the utility model registration claim, characterized in that the covering material is a lid.