JP3015309U - Female thread embedding device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a female screw body embedding device capable of efficiently embedding a large number of female screw bodies such as inserts at one time while minimizing damage to the concrete foundation. [Structure] A magnet 4 is attached to a concave surface 2 of a rectangular dish-shaped device body 1 having a locking piece 3 with an upper surface of a metal home F, and bolts 6, 6, 6 are arranged in a predetermined arrangement from the concave surface 2 side. … Protruding on the other side, these bolts 6, 6,
6, ... from the opposite side of the concave surface 2 to the inserts I, I, I,
It is made by screwing on. Then, before the concrete is placed, the embedding device A is fixed to the inner surface Fa of the metal home by using the magnet 4 and the locking piece 3, whereby the inserts I, I, I, ... Are arranged in the concrete foundation in a predetermined manner. Can be embedded in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a female screw body embedding device such as an insert. To be more specific, when constructing a concrete foundation for a house, embed female threaded bodies such as bolt-mounting inserts for fixing the end of the haul and the metal fittings that make up the joists that compose the floor. For a female screw body embedding device for the same.

[0002]

[Prior art]

 Bolts are embedded in concrete foundations in order to fix the metal fittings that receive the ends of large hauls and joists that make up the floors of houses. Conventionally, this bolt is embedded in a concrete foundation by mounting a bolt in a bolt insertion hole formed in a formwork for constructing the concrete foundation (hereinafter referred to as a metal home), and embedding it when molding the concrete foundation. Was being done.

However, a metal home having a bolt insertion hole is a dedicated metal home for embedding a bolt and cannot be used for any other purpose, and it is not possible to easily change the bolt embedding position. Had. Therefore, various proposals have been made in the past in order to solve the drawbacks of the bolt embedding using such a dedicated metal home.

For example, in Japanese Utility Model Laid-Open No. 62-10954, a bolt insertion hole is provided on the back surface of a box-shaped body whose front surface is open, and legs are provided on the front edge of the upper plate of the box-shaped body. An inverted L-shaped hooking piece consisting of a horizontal part and a horizontal part is a bolt embedding box that is erected with the tip of this horizontal part facing forward, and one end of the bolt body that is embedded in the side part of the concrete foundation. There is proposed a device for embedding a bolt in a concrete foundation, which is composed of an embedding bolt having a male screw formed on its part and a nut screwed with the male screw.

In Japanese Utility Model Publication No. 6-26677, there is provided a polygonal dish-shaped concave surface and a locking piece formed by bending one side of the dish-shaped concave surface to a concave surface side at a substantially right angle. Two through holes for inserting the anchor bolts are formed at a predetermined interval, and at least one protrusion protruding toward the opposite side of the concave surface is provided between the two through holes. A magnet composed of a plurality of independently movable magnet pieces is mounted on the mold body in the concave surface, and has a fitting hole for fitting the protrusion, and anchor bolts are provided at two positions at predetermined intervals in the longitudinal direction. An anchor bolt embedding mold has been proposed, which is characterized in that an anchor bolt is inserted into the through hole from the side opposite to the concave surface through a supporting member to be supported and screwed from the concave side with a tightening nut. .

However, in any of the above proposals, since the anchor bolt is embedded in the concrete foundation, the depth of the concave portion formed in the main body is unavoidable. In other words, when the nut is screwed onto the bolt, the tip of the bolt needs to be slightly projected from the nut, so the depth of the recess must be increased by at least that much. However, since these bolt embedding devices are hung inside the metal home and embedded in the concrete when pouring the concrete, increasing the depth of these recesses leads to an increase in the loss of the concrete foundation. There is a problem that the strength is reduced.

Further, concrete that has entered through the gap between the bolt embedding device and the metal frame adheres to the portion of the bolt protruding from the nut. Therefore, when removing the bolt embedding device, there is a problem that the screw groove of the nut and the thread of the bolt are damaged by the adhered and solidified concrete. Naturally, a nut with a damaged thread groove cannot be reused, and this leads to the problem that the reuse rate decreases.

An insert embedding device a as shown in FIG. 9 is known as a device for embedding an insert in a concrete foundation, but an insert I that can be embeded at one time by the device a is The number of inserts I is limited to one, and when a plurality of inserts I, I are embedded at a predetermined interval, each insert must be positioned, which is not efficient.

[0009]

[Problems to be solved by the device]

 The present invention has been made in view of the above problems of the prior art, and it is an apparatus for embedding a female screw body that can minimize the loss of a concrete foundation and efficiently embed a large number of female screw bodies such as inserts at a time. The purpose is to provide.

[0010]

[Means for Solving the Problems]

 The female screw body embedding device of the present invention comprises a device body having a dish-shaped concave surface provided with a straight portion on a part of its outer periphery, and a concrete foundation integrally formed on the straight portion on the concave surface side. An engaging member having an engaging portion with the mold, a magnet disposed so that the magnetically adhered surface is substantially flush with the outer periphery of the apparatus main body at approximately the center of the concave surface, and the concave surface A plurality of through holes for inserting bolts provided in a predetermined arrangement, a bolt inserted through the through hole from the concave surface side, a washer detachably attached near the head of the bolt, and a concave surface of the concave surface. And a female screw body screwed to the bolt from the opposite side.

In the female screw body embedding device of the present invention, the magnet preferably comprises a plurality of magnet pieces, and the magnetized surface of the magnet is also preferably movable.

In the female screw body embedding device of the present invention, it is also preferable that the female screw body embedding device is provided with detachment preventing means for preventing the bolt from detaching from the device body.

Here, the disengagement prevention means is provided, for example, on a bolt side locking member attached to a bolt, a concave surface side locking member arranged on the concave surface side, and between the both locking members. It is composed of a flexible linear member or is mounted on a bolt, the bolt-side locking member, the concave-side locking member disposed on the concave surface side, and the arrangement between the locking members. It is composed of a stretchable linear member.

Alternatively, the disengagement prevention means may be, for example, a bolt side locking member having a locking hole at a tip end integrally formed with a washer mounted on the bolt, and the concave side disposition member. The bolt-side locking member is configured to include a concave-side locking member that locks the bolt-side locking member while ensuring movement within a certain range. More specifically, the concave-side locking member has a spacer member that is thicker than the plate thickness of the bolt-side locking member and that is disposed in the locking hole of the bolt-side locking member, and A cover member arranged on the surface for preventing the spacer member and the locking hole from being unlocked, and a fixing member for fixing the spacer member and the cover member to the concave surface. It is said that For example, the spacer member is a washer disposed between the magnet bottom surface and the concave surface, the cover member is a magnet bottom surface, and the fixing member is a magnet fixing screw.

Further, in the female screw body embedding device of the present invention, the depth of the portion where the magnet is provided on the concave surface may be deeper than the depth of other portions, if necessary.

[0016]

[Action]

 An internal threaded body such as an insert is screwed onto a bolt protruding to the side opposite to the concave side of the machine body, and the end surface of the female threaded body is attached to the opposite side of the concave side and is provided for concrete casting. The locking piece of the locking member is locked on the upper surface of the metal home where it is located. Next, after adjusting the position of the device body, the outer periphery of the device body is brought into contact with the inner surface of the metal home. For this reason, the magnet whose magnetized surface is substantially flush with the outer periphery of the device body is magnetically adhered to the inner surface of the metal home, fixing the device body to the metal home.

In this way, after the female screw body embedding device is fixed at a predetermined position of the metal home, concrete is poured into the metal home. Then, after curing the concrete for a certain period, the metal home is removed. Furthermore, in this state, if the bolts are unscrewed from the female screw body and the main body of the device is peeled off from the side of the concrete foundation and removed, the female screw body is embedded in the concrete foundation and is removed into the concrete foundation. To remain. That is, the embedding of the female screw body is completed.

Since the plurality of female screw bodies are held in the device body in the predetermined arrangement in the female screw body embedding device, the plurality of female screw bodies can be efficiently embedded in the concrete foundation in the predetermined arrangement. . In addition, the device main body that has been removed can be used repeatedly by holding the female screw body again.

In the female screw embedding device of the present invention, concrete may enter from the gap between the device main body and the metal home and adhere to the bolt head. Since it is flat and flat, it can be easily removed. Therefore, there is no obstacle to its reuse.

[0020]

【Example】

 Hereinafter, the present invention will be described based on embodiments with reference to the accompanying drawings, but the present invention is not limited to such embodiments.

Embodiment 1 An internal thread body embedding device (hereinafter, simply referred to as an embedding device) such as an insert according to Embodiment 1 of the present invention is shown in FIGS. 1 to 4, and the embedding device A is made of a steel plate. The apparatus main body 1 having a rectangular dish-shaped concave surface 2 is a main part. The depth of the concave surface 2 is set so that the head of a bolt mounted on the device body 1 described later does not protrude from the outer periphery 1a of the rectangle.

Further, as shown in FIG. 2, one side of the rectangular outer circumference 1a is integrally formed by, for example, bending molding, and is substantially perpendicular to the concave surface 2 and is locked from the rectangular outer circumference 1a. A piece 3 is provided. As shown in FIG. 2, a notch 3a for positioning is provided at the tip of the locking piece 3. The notch 3a is engaged with a positioning protrusion (not shown) provided on the upper surface of the metal home F to position the device body 1.

On the other hand, substantially the central portion of the concave surface 2 is uniformly depressed as shown in FIG. 1, and the magnet 4 is disposed on the depressed surface 21. The depth of depression of the depression surface 21 from the concave surface 2 is adjusted so that the magnetized surface of the magnet 4 is substantially flush with the rectangular outer periphery 1a. Here, the recessed surface 21 may be omitted and the concave surface 2 may be flat by appropriately adjusting the height of the magnet 4. The magnet 4 is housed, for example, in a commercially available magnet case 4a by individually biasing a plurality (three in the illustrated example) of magnet pieces 4b by springs from the bottom to the top. It is supposed to have been done.

Further, a pair of through holes 5 (see FIG. 3) sandwiching the magnet 4 are arranged in a row in the concave surface 2. The arrangement of the through holes 5 is appropriately selected according to the arrangement of the insert I embedded in the concrete foundation, and is not limited to that shown in the drawing. A bolt 6 is inserted into the through hole 5 from the concave surface 2 side, and an insert I is screwed into the bolt 6 from the opposite surface side of the concave surface 2. The tip surface of this insert I is in close contact with the surface opposite to the concave surface 2. By mounting the insert I in this manner, it is possible to almost certainly prevent the poured concrete from flowing into the insert I.

As shown in FIGS. 1 and 3, a wide washer 7 is detachably attached near the head 6a of the bolt 6. The washer 7 is mounted by, for example, inserting the washer 7 into the thread portion of the bolt material, and rolling the male screw on the thread portion of the bolt material while the washer 7 is in contact with the bolt head 6a. Done.

Next, with reference to FIGS. 3 and 4, the embedding of the insert I into the concrete foundation by the embedding device A having such a configuration will be described.

The embedding device A is set at a predetermined position of the metal home F, and the rectangular outer periphery 1a of the device body 1 is brought into contact with the inner surface Fa of the metal home F (see FIG. 3). The set embedding device A is fixed at the set position because the magnet 4 disposed on the concave surface 2 magnetically adheres to the inner surface Fa of the metal home. In this case, the locking piece 3 and the upper surface of the metal home F may be fixed by appropriate means.

Concrete is placed in the metal home F. In this case, the embedding device A receives the flow pressure of concrete and the buoyant force from the concrete in a flowing state, but the magnet pieces 4b are individually biased by the springs, and some vibration acts on the device body 1. Also, since the outer periphery 1a of the apparatus body 1 is also in contact with the metal home inner surface Fa, the fixed state of the apparatus body 1 is fixed even if the various forces act on the apparatus body 1. There is no risk of being maintained and moving. When the locking piece 3 and the upper surface of the metal home F are fixed to each other by appropriate means, the possibility is further reduced.

After the concrete is cured for a predetermined period, the metal home F is disassembled.

The bolt 6 is unscrewed from the insert I, and the device body 1 is peeled off from the concrete foundation. In this case, the bolt 6 is attached to the apparatus main body 1 through the wide washer 7, the side surface 2a of the concave surface 2 is tapered, and the end portion is bent by an appropriate radius. Therefore, this peeling is facilitated. At this time, the concrete that has flowed in from the gap between the device body 1 and the metal home F and adhered and solidified to the bottle head is also removed, but since the bolt head is flatter than the screw part, it is removed. Is also easy and does not damage the bolts. If the steel plate mold oil is applied to the main body of the apparatus in advance, the peeling can be further facilitated. In preparation for reuse of the device body 1, the bolts that have been unscrewed are temporarily fixed to an appropriate position on the concave surface 2 of the device body 1 with gum tape or the like.

As described above, according to the first embodiment, the internally threaded bodies I, I, I, ... Such as a plurality of inserts are arranged at once in the concrete foundation so that their openings are exposed to the outside. Can be embedded. Further, other than the female screw body I to be embedded, it can be repeatedly used. Further, since the depth of the concave surface 2 is shallower than that of the anchor bolt embedding device, it is possible to reduce the cross-section loss of the concrete foundation, and the strength reduction can be reduced accordingly.

Embodiment 2 FIG. 5 shows an essential part of an embedding device according to Embodiment 2 of the present invention. In Embodiment 2, the concave surface 2 is provided with bolt detachment preventing means 8. Since the rest of the configuration of the second embodiment is similar to that of the first embodiment, only the parts different from the first embodiment will be described below.

As shown in FIG. 5, the detachment preventing means 8 of the bolt 6 includes, for example, a bolt side locking piece 81 mounted between the head portion 6 a of the bolt 6 and the wide washer 7, and the concave surface 2 The concave side locking piece 82 arranged above the bolt 6 and a margin between the locking pieces 81 and 82 are provided, that is, the flexibility is provided with a certain degree of bending. It has a linear member 83 which has. Here, the linear member 83 may be a stretchable member such as a coil spring.

More specifically, the bolt side locking piece 81 is provided with a through hole 81 a for inserting the bolt 6 in the central portion and a locking portion 81 b in an upright shape. The locking portion 81b is provided with a locking through hole 81c, for example. The concave-side locking piece 82 is, for example, an L-shaped piece, and a locking through hole 82c is provided in the rising portion 82a. The L-shaped bottom 82b is fixed to the concave surface 2 such that the upright portion 82a faces the upright locking portion 81b of the bolt side locking piece 81. The linear member 83 is, for example, a piano wire 83b having locking rings 83a, 83a at both ends.

As described above, in the second embodiment, since the detachment preventing means 8 for the bolt 6 is provided, it is possible to omit the trouble of temporarily fixing the bolt 6 with the gum tape as in the first embodiment.

Embodiment 3 FIG. 6 and FIG. 7 show the essential parts of an embedding device according to a third embodiment of the present invention, and the third embodiment is a modification of the bolt detachment preventing means 8 according to the second embodiment. . This point will be described below.

As shown in FIGS. 6 and 7, the detachment preventing means 9 for the bolt 6 is integrally formed with a bolt side locking piece 91 having a locking hole 91a at the tip end on the outer periphery of the washer 7 of the bolt 6. The lock hole 91a is provided at the end of the magnet 4 and is locked to the mounting portion of the magnet 4. More specifically, the detachment prevention means 9 makes the plate thickness of the bolt side locking piece 91 thinner than the plate thickness of the washer 92 provided between the bottom surface of the magnet 4 and the recessed surface 21, and its engagement. The position of the bolt side locking piece 91 is adjusted so that the washer 92 is positioned in the stop hole 91a, and in this state, the magnet 4 is fixed by the screw 93. Here, as shown in FIG. 7, when there is a step between the bolt mounting surface and the magnet mounting surface, the locking piece 91 is appropriately bent and molded so as to conform to this step. If the size of the locking hole 91a is adjusted appropriately, the bolt 6 can be prevented from coming off without hindering the mounting of the bolt 6 into the through hole 5. Furthermore, as shown in FIG. 7, by appropriately adjusting the plate thickness of the locking piece 91, it is possible to simultaneously prevent the bolts 6 and 6 located above and below the magnet 4 from coming off.

As described above, in the third embodiment, since the detachment preventing means 9 is constructed by utilizing the mounting portion of the magnet 4, the number of parts constituting the detachment preventing means 9 can be minimized. Therefore, it is possible to obtain the effect that the increase in cost due to the provision of the separation preventing means 9 can be minimized, which is not obtained in the second embodiment.

In the third embodiment, the detachment preventing means 9 is constructed by utilizing the magnet mounting portion. However, as shown in FIG. 8, the spacer member 96 and the spacer member 96 are covered and A cover member 97 having a size capable of preventing the stopper 91 from coming off from the spacer member 96 is separately provided, and the cover member 97 and the spacer member 96 are fixed to the apparatus main body 1 by, for example, a screw 98. The separation prevention means 9A may be configured in this manner.

Although the present invention has been described based on the embodiments, the present invention is not limited to such embodiments, and various modifications can be made. For example, in the present embodiment, the apparatus main body is rectangular dish-shaped, but the shape thereof is not particularly limited as long as it has a linear portion for providing a locking piece with the upper surface of the metal home. For example, it can be a polygon. Further, in this embodiment, the locking piece was formed directly from the outer periphery of the apparatus main body at a right angle to the concave surface.However, after providing the portion parallel to the concave surface, the engaging portion with the upper surface of the metal home was formed at a right angle. May be.

[0041]

[Effect of device]

 As described above in detail, according to the present invention, it is possible to efficiently embed female screw bodies such as a plurality of inserts in a predetermined arrangement, reduce the cross-section loss of the concrete foundation, and reduce the strength decrease. The excellent effect of being able to do is obtained.

Further, according to the preferred embodiment of the present invention in which the bolt disengagement prevention means is provided, it is possible to save the labor of temporarily fixing the bolt to the main body of the device with a gum tape or the like, and improve the reuse efficiency of the embedding device. You can also get the effect.

[Brief description of drawings]

FIG. 1 is a front view of a female screw body embedding device according to a first embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an explanatory view of embedding the insert according to the first embodiment, showing a state in which the embedding device is locked to the metal home.

FIG. 4 is an explanatory diagram of embedding of the insert according to the first embodiment, showing a state where the apparatus main body is peeled from the concrete foundation.

FIG. 5 is an explanatory diagram of a bolt detachment preventing means used in the second embodiment of the present invention.

FIG. 6 is an explanatory view of a bolt detachment preventing means used in a third embodiment of the present invention.

7 is a sectional view taken along line VIII-VIII of FIG.

FIG. 8 is an explanatory view of another example of the bolt detachment preventing means used in the third embodiment of the present invention.

FIG. 9 is a schematic view of a conventional insert embedding device.

[Explanation of symbols]

 1 Device Main Body 2 Concave Surface 3 Locking Piece 3a Notch 4 Magnet 4a Magnet Case 4b Magnet Piece 5 Through Hole 6 Bolt 6a Bolt Head 7 Washer 8 Detachment Prevention Means 81 Bolt Side Locking Piece 82 Concave Side Locking Piece 83 Linear Member 83a Locking ring 83b Piano wire 9 Disengagement prevention means 91 Bolt side locking piece 91a Locking hole 92 Washer A Female screw body embedding device I Female screw body, insert F Metal home

Claims (10)

[Scope of utility model registration request] 1. An engagement between a device main body having a dish-shaped concave surface having a linear portion on a part of its outer periphery and a concrete foundation formwork integrally formed on the linear portion on the concave surface side. Locking member having a portion, a magnet arranged so that the magnetically adhered surface is substantially flush with the outer periphery of the apparatus main body at substantially the center of the concave surface, and a bolt provided at a predetermined position on the concave surface. A plurality of through holes for insertion, a bolt inserted through the through hole from the concave surface side, a washer detachably attached near the head of the bolt, and a screw on the bolt from the opposite side of the concave surface. A female screw body embedding device comprising: a mounted female screw body. 2. The female screw body embedding device according to claim 1, wherein the magnet comprises a plurality of magnet pieces. 3. The female screw body embedding device according to claim 1, wherein the magnetized surface of the magnet is movable. 4. The female screw body embedding device according to claim 1, further comprising detachment preventing means for preventing the bolt from detaching from the device body. 5. The detachment preventing means comprises a bolt side locking member mounted on a bolt, a concave surface side locking member arranged on the concave surface side, and a flexibility arranged between both locking members. 5. The female screw body embedding device according to claim 4, wherein the female screw body embedding device comprises: 6. The detachment preventing means includes a bolt-side locking member mounted on a bolt, a concave-side locking member disposed on the concave surface side, and a retractable member disposed between the locking members. 5. The female screw body embedding device according to claim 4, comprising a linear member. 7. The detachment preventing means includes a bolt side locking member having a locking hole at a front end formed integrally with a washer attached to the bolt, and the bolt side disposed on the concave surface side. The female screw body embedding device according to claim 4, further comprising a concave side locking member that locks the bolt side locking member while ensuring movement of the locking member within a certain range. 8. A spacer member, wherein the concave-side locking member is arranged in a locking hole of the bolt-side locking member, and is thicker than a plate thickness of the bolt-side locking member, and a surface of the spacer member. And a fixing member that fixes the spacer member and the cover member to the concave surface, and a cover member that is disposed in the spacer member and prevents the spacer member and the locking hole from being unlocked. The female screw body embedding device according to claim 7. 9. The spacer member is a washer disposed between a magnet bottom surface and a concave surface, the cover member is a magnet bottom surface, and the fixing member is a magnet fixing screw. The female screw body embedding device according to claim 8. 10. The female screw body embedding device according to claim 1, wherein the depth of the concave portion where the magnet is provided is deeper than the depth of other portions.