JPH07216997A - Bolt cap for embedded anchor - Google Patents

Abstract

PURPOSE:To achieve low manufacturing cost and to facilitate attaching work. CONSTITUTION:A bolt cap 7 for embedded anchor provided for an embedded anchor bolt 4 is provided to ensure a space 6 required for bolt attaching work for mounting a mullion fixing device to the anchor 4, and a portion near the boundary between the side surface 9 and the bottom surface 8 which constitute a vessel-like synthetic resin body of the cap 7 has a gently curved surface. A flange 11 is provided on the upper edge 10 of the side surface so as to be in contact with the anchor 4, and a claw 12 for engagement with a bolt attaching hole 4b of the anchor 4 extends along a part of the flange 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt cap for an embedded anchor, and more particularly, it is provided in an embedded anchor for holding a space required for bolt mounting work for attaching a vertical mounting bracket to the embedded anchor. The present invention relates to a bolt cap for an embedded anchor.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 12, a floor surface 1 of a building and an upright 2 are connected by an upright mounting bracket 3. In order to attach the upright mounting bracket 3 to the floor surface 1, the upright mounting bracket 3 must be attached to the embedded anchor 4 embedded with the leg K in the concrete 1a on the floor surface 1 with the mounting bolts 5. I won't. In order to attach the attachment bolt 5, a bolt hole 4b for accommodating the head portion 5a of the attachment bolt 5 is provided in the horizontal portion 4a of the embedded anchor 4, and the floor is provided near the lower portion of the bolt hole 4b. It is necessary to secure a space 6 in which the concrete 1a on the surface 1 does not flow, and therefore, conventionally, a container-shaped building bolt cap 7 made of a metal plate is attached by welding Y to secure the space 6. Was there. This building bolt cap 7
As shown by the solid line in the perspective view in FIG. 13, the main body is a container-like body having a rectangular bottom surface 8 and side surfaces 9 made of iron or other metal plate. By preventing the concrete from flowing into the floor surface with the cap 7 and securing the space portion 6, the mounting bolt 5 (see FIG. 12) can be slid and moved, and the position adjustment of the vertical mounting bracket 3 during the mounting work is free. It can be done. And this building bolt cap 7
In the past, the upper edge 10 thereof was conventionally attached to the lower surface of the horizontal portion 4a of the embedded anchor 4 by welding and adhered thereto.

[0003]

However, since the conventional embedded anchor bolt cap 7 is made of a metal plate, there is a problem that the manufacturing cost is high. Further, since the boundary between the bottom surface 8 and the side surface 9 forming the main body is square, the flow of the floor concrete around the boundary is lacking smoothness due to the effect of the corner, and a cavity is generated.
There was a problem in construction work that they did not adhere to each other. further,
The attachment to the embedded anchor 4 involves the work of previously welding the upper edge 10 of the embedded anchor bolt cap 7 to the lower surface of the embedded anchor horizontal portion 4a, which poses a problem of poor work efficiency. It was The present invention is
The purpose is to solve such problems.

[0004]

To achieve the above object, the present invention provides a bolt cap for an embedded anchor as follows. That is, the present invention is an embedded anchor bolt cap provided in an embedded anchor for securing a space required for a bolt attachment work for attaching a vertical attachment metal to an embedded anchor, wherein the embedded anchor bolt cap is , The vicinity of the boundary between the side surface and the bottom surface of the synthetic resin container-shaped body forms a gentle curved surface,
A collar that abuts the embedded anchor is provided at an upper edge of the side surface, and a claw for engaging with a bolt mounting hole of the embedded anchor is attached to a part of the collar. Bolt cap for embedded anchor. The bolt cap for the embedded anchor according to claim 1, wherein the claw is configured to be easily removable after the bolt cap for the embedded anchor is attached. 2. The claw is provided with a cut groove at a boundary with the collar of the embedded anchor bolt cap.
Alternatively, the bolt cap for the embedded anchor according to claim 2. The bolt cap for an embedded anchor according to claim 1, 2 or 3, wherein at least one track-mark-shaped groove is provided on the upper surface of the collar.
And a bolt cap for an embedded anchor provided in the embedded anchor, for securing a space necessary for a bolt mounting work for attaching the vertical mounting bracket to the embedded anchor, wherein the bolt cap for the embedded anchor is
The vicinity of the boundary between the side surface and the bottom surface forming the container-shaped main body of the synthetic resin forms a gentle curved surface, and a flange that abuts the embedded anchor is provided at the upper edge of the side surface, and a part of the flange is the above-mentioned. Characterized by having a partition for abutting and positioning the inside of the bolt mounting hole of the embedded anchor,
Bolt cap for embedded anchor. 6. The embedded anchor bolt cap according to claim 5, wherein a double-sided adhesive tape is adhered to the upper surface of the collar.

[0005]

In the above structure, the vicinity of the boundary between the side surface and the bottom surface of the embedded anchor bolt cap body which forms a smooth curved surface has the function of smoothing the flow of concrete. Further, the collar of the anchor has a function of stabilizing the contact between the anchor and the main body and preventing the concrete from flowing into the main body. Further, the claw has an effect of engaging with the bolt mounting hole of the anchor from the inside and positioning the bolt cap with respect to the anchor. Further, the thin groove on the upper surface of the tsuba has a resistance effect of preventing the intrusion of concrete. In addition, the screen (positioning) has a function of positioning and a function of preventing movement during concrete sinking work. Further, the double-sided adhesive tape has a function of adhering the collar and the anchor.

[0006]

Embodiments of the present invention will now be described with reference to the drawings, showing how the construction of the present invention is actually embodied, together with its operation. FIG. 1 is an exploded perspective explanatory view of an embodiment of the present invention, in which 4 is an embedded anchor, and a leg K is provided on the lower surface of the horizontal portion 4a of the embedded anchor 4 and embedded in concrete on the floor. As a result, the embedded anchor 4 becomes stable. Bolt holes 4b are provided in the horizontal portion 4a. A mounting bolt 5 is mounted in the bolt hole 4b with its head 5a facing downward. In the lower part near the bolt hole 4b,
The embedded anchor bolt cap 7 of the present invention is attached via the airtight rubber G. The embedded anchor bolt cap 7 is made of synthetic resin and has a bottom surface 8 and a side surface 9.
And a container-like container made of and having an upper edge 10 with a collar (collar) 11 for contacting an anchor, and the collar 11 is provided with two claws 12 for anchor anchoring on the upper portion. There is. The boundary between the bottom surface 8 and the side surface 9 of the embedded anchor bolt cap 7 is characterized by a gentle continuous curved surface.

FIG. 2 is a plan view of the embedded anchor bolt cap 7 of the embodiment, and the periphery thereof is a track-shaped collar 11.
And, the central body is dented like a ship bottom. Further, a locking claw 12 is provided on a part of the collar. This nail 12
Are provided in this embodiment, but the number can be increased if necessary. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 and shows the longitudinal direction of the embedded anchor bolt cap 7 in a cross section. In the longitudinal direction, the hollow of the main body is composed of a gentle curve like the bottom of a ship. Also,
A pawl 12 is provided outward on the collar 11. This claw 12 becomes unnecessary after the construction and is removed. Figure 4
FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2, showing that the recess of the main body has a substantially semicircular shape in the cross section in this direction. In this way, the bolt cap for embedded anchor 7
Has a smooth continuous curved surface on the bottom and side surfaces of the main body. FIG. 5 is an explanatory view of the relationship between the claw 12 and the embedded anchor 4 of the same embodiment. The horizontal portion 4a of the embedded anchor 4 locked by the claw 12 and the collar 11 of the embedded anchor bolt cap 7 are illustrated. An airtight rubber G is sandwiched between and.
With this airtight rubber G, there is no gap between the collar 11 of the embedded anchor bolt cap 7 and the horizontal portion 4a of the embedded anchor 4, and it is possible to prevent concrete flowing during construction from flowing into the bolt cap. . If the horizontal portion 4a of the embedded anchor 4 is a thin product, the collar 1
In order to sufficiently complement the gap between the first and second parts, as shown in FIG. 6, by using the airtight rubber G ₁ having a large thickness, it is possible to maintain the airtightness and prevent concrete from flowing into the cap. FIG. 7 is an explanatory view for explaining the claw 12 in more detail, and a thin groove 12a is provided at the base end of the claw 12 which is in contact with the collar 11. The vicinity of the base end having the narrow groove 12a has a weaker structure than the brim 11 and the claw 12, and the surrounding construction concrete is hardened to fix the embedded anchor 4 and the embedded anchor bolt cap to each other. After that, the unnecessary claw 12 can be easily removed from the base end. In addition, this thin groove 12a
Are provided on both sides in the figure, but may be provided on one side in some cases.

FIG. 8 is a front cross-sectional explanatory view of the embedded anchor bolt cap of the embodiment, and in the drawing, 3 is a vertical fitting. A synthetic resin embedded anchor 4 is provided below the upright mounting bracket 3, and the embedded anchor 4 has a leg K.
Is attached, and by fixing this leg K in concrete, the embedded anchor 4 becomes more stable. A bolt hole 4b is formed in the horizontal portion 4a of the embedded anchor 4, and the vertical mounting member 3 is attached to the embedded anchor 4 by the washers 5b and 5c and the nut 5d with the head 5a of the mounting bolt 5 facing downward. . In the bolt hole 4b of the horizontal portion 4a of the embedded anchor 4, the embedded anchor bolt cap 7 contacts the collar 11 of the upper edge 10 from below through the airtight rubber G, and extends to the collar 11. The installed and attached claw 12 is locked to the upper portion of the horizontal portion 4a from the inside of the bolt hole 4b. Therefore, the embedded anchor bolt cap 7 can be firmly fixed to the horizontal portion 4a of the embedded anchor 4 by the collar 11 and the claw 12, and after the fixing, the claw 12 becomes useless and can be easily removed. You can FIG. 9 is a side cross-sectional view of the same embodiment, in which the floor surface 1 and the upright 2 of the building are connected by the upright mounting bracket 3. In order to attach this upright mounting bracket 3 to the floor surface 1, concrete 1a on the floor surface 1
Inside, there is an embedded anchor 4 that is embedded together with the leg K, and this embedded anchor 4 and the upright mounting bracket 3 are attached with mounting bolts 5. The body of the embedded anchor bolt cap 7 for protecting the mounting bolt 5 has a substantially semicircular shape in this side sectional view. Since the other parts are the same as those already described, only the reference numerals are attached to avoid redundancy and the description thereof is omitted. FIG. 10 is a partially cutaway perspective view showing another embodiment of the present invention. The difference between the other embodiment and the above embodiment is that the track is formed on the upper surface of the collar 11 according to the shape of the edge of the collar 11. That is, it has three thin grooves 13. Although the number of the grooves 13 is three in the figure, the number of the grooves 13 is not limited to three in the present invention and may be increased or decreased as appropriate. The airtight rubber G (see FIG. 1) is set on the collar 11 having the groove 13. By providing the groove 13, the surface of the collar 11 is undulated to increase the surface area and increase the resistance, so that the effect of preventing the concrete from flowing in from the outside at the time of concrete construction is enhanced. FIG. 11 is a partially cutaway perspective view showing an embodiment of another invention. The difference from this invention is that this invention has a claw 12, but the present invention does not have a claw, instead. Having a partition 14 and a collar 11
The double-sided adhesive tape 15 is adhered to the upper surface of the. The partition 14 is for positioning, and the bolt cap 7 for the embedded anchor is used for the horizontal portion 4 of the embedded anchor 4.
When the bolt is attached to the bolt attachment hole 4b (see FIG. 9) of a, the outside of the partition 14 is brought into contact with the inside of the bolt attachment hole 4b, so that the positioning can be easily and accurately performed. Further, after positioning, it is possible to prevent the deviation during the concrete sinking work. Since the height of the partition 14 is set appropriately lower, the anchor 4 horizontal portion 4
There is no possibility of protrusion from the upper surface of the a. Therefore, it is not necessary to remove the partition 14 even after the embedded anchor bolt cap 7 is attached. The double-sided adhesive tape 15 on the upper surface of the collar 11 can be easily attached to the anchor 4 by adhering the embedded anchor bolt cap 7 to the anchor 4 by contacting the lower part of the horizontal portion 4a of the anchor 4. The stop claw 12 is unnecessary. And
Since it is bonded, airtight rubber is of course unnecessary. Since the embedded anchor bolt cap 7 of the present invention having the above-described structure is made of synthetic resin, it is extremely easy to manufacture, suitable for mass production, and the manufacturing cost can be reduced. Further, the claw 12 and the collar 11 allow one-touch attachment work to the embedded anchor 4, and are superior in attachment workability to the conventional welding work. Further, the collar 11 is in contact with the lower surface of the horizontal portion 4a of the embedded anchor 4 via the airtight rubber G, and the thickness of the airtight rubber G can be complemented according to the thickness of the horizontal portion 4a of the embedded anchor. Since various sizes are prepared, airtightness is maintained regardless of the thickness of the anchor. for that reason,
There is no possibility that concrete poured into the floor surface at the time of construction will flow into the space portion 6 in the embedded anchor bolt cap 7, and the space portion 6 is completely secured so that the bolt holes 4b of the mounting bolt 5 can be obtained. The work of adjusting the slide of the bolt inside is free, and the work of mounting the upright mounting bracket 3 can be performed smoothly. Furthermore, since the embedded anchor bolt cap 7 has a gently curved surface near the boundary between the bottom surface 8 and the side surface 9, there is an unnecessary cavity between the concrete poured on the floor surface and the building bolt cap 7. Is generated, the flow of the concrete is made smooth, and the bolt cap 7 for embedded anchor and the floor surface are in close contact with each other. Further, in the case where a narrow groove is provided on the upper surface of the flange 11 along the direction, the surface area is increased due to the undulation and the resistance is increased, so that concrete can be prevented from flowing in. Further, the one provided with the partition 14 can be easily positioned, and the one provided with the double-sided adhesive tape 15 can be easily attached and fixed to the anchor without using the nail and the airtight rubber.

[0009]

As described above, according to the present invention, since the embedded anchor bolt cap is entirely made of synthetic resin, it is suitable for mass production and the production cost can be reduced. Also,
Since the vicinity of the boundary between the side surface and the bottom surface of the main body is configured to have a gentle curved surface, the concrete sinking work on the floor surface can be performed smoothly. Further, since the collar has a claw on a part thereof, it can be easily attached to the bolt attachment hole of the embedded anchor, and the workability is improved. In addition to the above effects, the inventions of claim 2 and claim 3 can easily remove the claws of the bolt cap for the embedded anchor after fixing the concrete, thereby improving workability. According to the invention of claim 4, the upper surface of the flange has a track-mark-shaped thin groove, so that the resistance can be increased and the inflow of concrete at the time of concrete construction can be prevented. According to the fifth aspect of the present invention, since the partition is provided, the positioning at the time of attaching to the embedded anchor can be facilitated, and the displacement of the embedded anchor bolt cap can be prevented during the concrete sinking work. Claim 6
In the invention, since the double-sided adhesive tape is adhered to the upper surface of the tsuba,
The nails and airtight rubber are not required, and they can be securely and easily attached to the anchor.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory plan view of the embedded anchor bolt cap of the embodiment.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is an explanatory view of the relationship between the nail and the embedded anchor of the embodiment.

FIG. 6 is an explanatory view of the relationship between the nail and the embedded anchor of the embodiment.

FIG. 7 is an explanatory diagram of a claw.

FIG. 8 is a front sectional view of the embodiment.

FIG. 9 is a side sectional view of the same embodiment.

FIG. 10 is a partially cutaway perspective view showing another embodiment of the present invention.

FIG. 11 is a partially cutaway perspective view showing another embodiment of the invention.

FIG. 12 is an explanatory diagram of a conventional technique.

FIG. 13 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 3 Three-sided mounting bracket 4 Embedded anchor 4b Bolt mounting hole 7 Bolt cap for embedded anchor 8 Bottom surface of 7 9 Side surface of 7 10 Top edge of 11 11 Collar of 12 7 Claw 13 Groove 14 Partition 15 Double-sided adhesive tape

Claims (6)

[Claims] 1. An embedded anchor bolt cap provided on an embedded anchor for securing a space necessary for a bolt attaching operation for attaching a vertical attachment fitting to the embedded anchor, wherein the embedded anchor bolt cap is The vicinity of the boundary between the side surface and the bottom surface forming the container-shaped main body of the synthetic resin forms a gentle curved surface, and the upper edge of the side surface is provided with a collar that abuts the embedded anchor, and a part of the collar is provided. A bolt cap for an embedded anchor, wherein a claw for engaging with a bolt mounting hole of the embedded anchor is attached. 2. The bolt cap for an embedded anchor according to claim 1, wherein the claw is configured to be easily removable after the bolt cap for the embedded anchor is attached. 3. The embedded anchor bolt cap according to claim 1 or 2, wherein the claw is provided with a cut groove at a boundary with the flange of the embedded anchor bolt cap. 4. The upper surface of the collar is provided with at least one track-mark-shaped thin groove.
Alternatively, the bolt cap for the embedded anchor according to claim 2 or claim 3. 5. An embedded anchor bolt cap provided on an embedded anchor for securing a space required for a bolt attaching operation for attaching a vertical attachment fitting to an embedded anchor, wherein the embedded anchor bolt cap is The vicinity of the boundary between the side surface and the bottom surface forming the container-shaped main body of the synthetic resin forms a gentle curved surface, and the upper edge of the side surface is provided with a collar that abuts the embedded anchor, and a part of the collar is provided. A bolt cap for an embedded anchor, comprising a partition for abutting and positioning the inside of the bolt mounting hole of the embedded anchor. 6. The embedded anchor bolt cap according to claim 5, wherein a double-sided adhesive tape is adhered to the upper surface of the collar.