Definitions

• the present invention is inserted into the opening of the insert embedded in the concrete product, the insert embedded in the concrete product, the sleeve embedded with the insert, the insert inserted in the opening of the insert inserted in the formwork. It relates to a container with a cylindrical main body such as a plug. Background art
• Fig.24 shows an example of the method adopted from the time of setting the insert in the formwork and embedding in the box.
• insert 6 is used for screwing the ball 5 inserted from the back of outer form 1 or inner form 3 into the inside of insert 6. It is attached to the predetermined position of. Therefore, it is necessary to make a hole larger than the inside diameter of the insulator ⁇ in the formwork 1 or 3 where the opening of insert 6 is located, so that bolt 5 for setting can be passed. Furthermore, since insert 6 is attached from the surface of form 1 or 3 and bolt 5 is inserted from the back, the insert is set, so the work except for the form with a very small size is performed. One staff member can not install the sensor kite.
• An external thread 7b corresponding to the internal thread of the insert 6 is provided on the outer peripheral surface of the main body 7a of the plug 7, and the plug main body 7a is hollow so that it can be fitted into the boss 4 ing. Then, from the back of the body 7 a, a portion 7 c in which the groove 7 d is to be provided is protruded.
• Providing a large hole in the durable formwork to penetrate thick bolts as described above is also problematic in terms of securing the dimensional accuracy of the formwork. That is, if a large hole is made in the formwork to set the insert, distortion or unevenness is likely to occur in the formwork, and the inner formwork can not be removed smoothly, or a box made of concrete is made. The dimensional accuracy is degraded.
• the same problem as described above occurs because the distortion of the formwork occurs even if the work of closing the hole formed in the formwork by welding in order to change the mounting position of the insulator ⁇ ⁇ is generated. In the case of molds that are demolded by sliding the inner surface of the concrete box product as in Inner Form 3, high accuracy is particularly required and repair is difficult.
• the present invention provides a concrete / embedded object that can be easily set in the formwork by one worker without using a setting rod or boss, and further, the mold is used as it is.
• the purpose is to provide concrete burial that can be removed from the frame. Whether the formwork is slipped off as in the inner formwork or removed when the formwork is pivoted out, the concrete without a buried object is affected without affecting the product. It also aims to provide concrete burial that can be demolded with the same amount of time and effort as clean cage products.
• the diameter of the hole to be opened in advance in the formwork for setting the concrete embedded article of the present invention is reduced to prevent distortion of the formwork, and further, the position of the embedded article is determined. It also aims to provide concrete and buried materials that can be easily changed. As such buried joints are buried for each concrete container and product, it is also aimed to be able to provide them at low cost.
• the concrete product having the concrete girder burial of the present invention can be manufactured in a short period of time, with less labor of workers as much as possible, and the cost related to this can be reduced so that it can be shipped in a short period of time. Become. Disclosure of the invention
• a thin resin-made thin protrusion protruding to the opposite side of the main body
• the set holes to be opened in the formwork may have a small diameter corresponding to the projections, no distortion occurs in the formwork when the holes are opened. Furthermore, if it is a small diameter hole
• the center of the asperity should be placed outside this opening.
• an inner diameter of the main body or a narrow projection of the opening At the end of this body, it extends almost flat outside If a flange surface is present, the projection can be protruded from this flange surface, and further, this flange surface is adhered to the inner surface of the formwork to prevent the entry of concrete by preventing the entry of concrete. it can.
• the flange and the mold Even if there is a gap between the two, it can prevent the intrusion of concrete. If the other end of the container is also open for inserting the burial insert, closing the end with the protuberance with a thin film will allow the container to be inserted into the burial insert. It is possible to completely prevent the intrusion of the clean moth.
• one end of the main body on which the projection is provided is closed to make contact with the inner surface of the mold. If the setting surface is provided, thin projections can be provided or they can be appropriately disposed without being affected by the configuration of the main body inserted into the buried insulator.
• the main body side to be inserted into the insert is hollow on the opposite side of the protrusion, and molding with resin becomes easy.
• this plug is to be screwed to the inserter, retract the setting part from the inside of the main body so that the jig can be inserted into the part when removing the plug from the inserter. It is desirable to keep it in mind.
• the set surface is exposed on the surface of the concrete product, making it easy to operate with a jig.
• the setting surface does not wrap around the setting surface. It appears clearly on the surface of the concrete product, and the parts to be manipulated are not filled with concrete.
• the protrusion is cut from this connection.
• the vicinity of the contact portion may be made thicker toward the tip of the projection, or a recess or a cut may be provided in the connection portion.
• a projection for setting the main body by using a setting hole provided in the formwork a protrusion fitted into the setting hole or a protrusion which is approximately elastically deformed in accordance with the setting hole can be adopted.
• the main body By using a column-shaped projection that is in the state of a so-called stop-fit or in-fit with the set hole, the main body can be set in the formwork simply by inserting the protrusion into the set hole. Also, according to the shape of the set hole, if it is a protrusion that is inserted approximately elastically, that is, elastically with some deformation or plastic deformation, the main body is set to the mold by elastic force or frictional force. it can. Protrusions formed of various resins, such as ordinary plastics such as polypropylene, vinyl chloride, or so-called engineering plastics such as reinforced polyethylene, have such characteristics.
• the substantially elastically deforming property is obtained not only by the characteristics of the material but also by the shape of the cross section of the projection, such as extending a plurality of ribs in the radial direction from the columnar portion.
• the shape of the cross section of the projection such as extending a plurality of ribs in the radial direction from the columnar portion.
• various types such as crescent-shaped, crescent-shaped, star-shaped, and polygonal protrusions in cross section, and protrusions that repeat unevenness periodically in the radial direction or in the longitudinal direction of protrusions.
• the main part is set as the formwork by pressing the formwork from the back side by the spread parts. You can get adhesion. Also, after the protrusions are cut at the time of demolding, if the portion in contact with the back surface of the mold is thicker toward the tip, the cut portion of the protrusion is pulled to the back surface of the mold, Easy to remove.
• the adhesion can be obtained by providing the diameter, shape, and an appropriate number of projections of these projections.
• a sheath tube or the like may be provided on the back surface of the formwork, and the setting hole may be elongated to increase the adhesion with the protrusion.
• the body is set as the formwork. Is obtained.
• these projections do not have to be shaped like a needle, as they can be inserted into the set holes previously opened in the mold.
• the tips of the projections In order not to damage workers and clothing such as their gloves, it is desirable that the tips of the projections have a non-spire-like shape such as semicircular or hemispherical.
• the tip in order to guide the protrusion to the set hole, it is desirable that the tip be tapered toward the tip.
• FIG. 1 is a development view showing how to set a resin mold in a mold using the sensor / wafer holder of the first embodiment of the present invention.
• FIG. 2 is a cross-sectional view showing the configuration of the insert holder shown in FIG.
• FIG. 3 is a side view showing a state in which the mold is set in the formwork by the insert holder shown in FIG.
• FIG. 4 is a side view showing a partial cross-sectional view of how the buried concrete product with the insert holder shown in FIG. 1 is demolded.
• FIG. 5 is a view showing how the member for closing the opening of the insulator holder shown in FIG. 4 is removed.
• FIG. 6 is a development view showing how a hexagonal nut inserter is set as a formwork using different example of the insert holder according to the first embodiment.
• FIG. 7 is a side view showing a state in which the protrusion of the insert holder shown in FIG. 6 is set and a state in which the protrusion is cut, using a partial cross section.
• FIG. 8 is a side view showing an example of different projections using a partial cross section.
• FIG. 9 is a perspective view showing an insulator according to a second embodiment of the present invention.
• FIG. 10 is an enlarged perspective view of the projection shown in FIG.
• Figure 11 is a developed view showing how the insert shown in Figure 9 is set in the formwork.
• Fig. 12 is a side view showing a partially cut-out side view of the embedded product in the insert shown in Fig. 9 being demolded.
• FIG. 13 is a perspective view showing another example of the insert of the second embodiment of the present invention.
• FIG. 14 is an enlarged perspective view of the projection of FIG.
• FIG. 15 is a view showing the relationship between the protrusion shown in FIG. 13 and the setting hole.
• FIG. 16 is a cross-sectional view showing the configuration of the sleeve according to the third embodiment of the present invention.
• FIG. 17 is a view showing the embedded product of the sleeve shown in FIG. It is sectional drawing which shows a mode that it demolds.
• FIG. 18 is a perspective view and a cross sectional view showing a plug according to a fourth embodiment of the present invention.
• Figure 19 is an exploded view showing how the insert is set in the formwork using the plug shown in Figure 18.
• Fig. 20 is a side view showing a partially cutaway side view of how the plug of Fig. 18 is used to remove the embedded concrete product from the insert. It is a figure showing how to remove the plug from the inserted insert. 1 c
• FIG. 22 is a perspective view and a sectional view showing a modification of the plug of the fourth embodiment of the present invention.
• Figure 23 shows the removal of the plug shown in Figure 22 from the embedded insert.
• FIG. 24 is a cross-sectional view illustrating the setting method of the conventional insert.
• Figure 25 is an enlarged view of a part of Figure 24.
• Figure 26 is an exploded view of a conventional method of setting up inserts using plugs.
• FIG. 1 shows an embodiment of the present invention in which the embedded resin 6 is set to the form 40 using the resin holder 10.
• FIG. 2 shows the structure of the insulator holder 10 according to the present invention by using a cross section.
• the insert holder 10 has a cylindrical main body 1 1 whose both ends are open, and a ridge extending outward from the main body around the one opening 1 4. It is equipped with flange part 1 6.
• flange part 1 6 In order to be able to insert and hold the insulator ⁇ 6 from the opening 13 at the other end of the main body 1 1 and to absorb the difference of the outer diameter of the insert 6, it is necessary to form several strips slightly protruding on the inner surface A mountain 13 a is provided.
• the insert holder 10 is integrally formed of a resin such as polypropylene, reinforced polyethylene or ABS, and depending on the application, glass fiber etc. can be added to increase the strength. These materials have some degree of elasticity, and if the inner side of the holding side 13 is provided with a mountain 13a, the outer diameter of the insulator 6 and the inner diameter of the holding side 13 are Even if there is a slight difference between the two, it is possible to hold the insert 6 with certainty.
• the inside of the main body 1 1 is hollow and the side facing the formwork, ie the setting side 1
• the inner diameter of the opening 14 is slightly smaller than the inner diameter of the main body 1 1 so that the end of the insert 6 to 5 does not fly out.
• the end of the insulator inserted into the holding side 13 is covered by the insert holder 10 and not exposed to the surface of the container.
• the insert holder 10 of this example prevents the end of the metal insert from being scratched, and it should be possible even in the event of a drop. It also serves to protect the surface of the product from contamination.
• Flange portion 1 6 forms a substantially flat surface 17, and this surface 17 is in contact with inner surface 4 0 a of form 4 0 so that insert 6 can be set perpendicular to the form 4 Also, it can prevent intrusion of context.
• the above-mentioned synthetic resin having elasticity is suitable for constituting the flange portion 1 6.
• the flange portion 1 6 does not have to be disk-like as in this example, and may be a polygon.
• a flat surface 17 can be obtained within the range of the wall thickness.
• a thin film seal 31 is inserted between the flange face 17 and the surface 40 a of the formwork.
• the seal 31 is made of foamed plastic such as polyurethane foam cut into a ring shape, and is an elastic thin film member having a thickness of about 0.5 to 2 mm. It is.
• the seal 31 is attached along the edge 17a of the flange face 17 and covers the outside of the projection 20 which protrudes from this face 17 force, and the inside of the flange face 17 is closed. Block the entry of By applying this seal, after removal from the mold, the flange surface 17 of the insert holder clearly appears on the surface of the concrete product and the setting for inserting the protrusion 20 It is also possible to prevent the entry of a single container into hole 4 1.
• the opening 14 connected to the insert 6 is closed by the thin film member 32 extended from the main body 11 to almost completely prevent the penetration of the container into the insert.
• This thin film closing member 32 is inside the body I 1 It is supported from the side by a l-beam 3 2 a and blocks the entire opening l 4. After removal from the mold, this closing member 32 can prevent intrusion of dust, rain water, etc. into the insert. In addition, when using an insert, this member 32 can be easily removed with a radio wrench or the like.
• the diameter of the hole for 5 will be equal to or larger than the conventional one.
• the protrusion 20 since the protrusion 20 is disposed away from the opening I 4, the protrusion does not have to be hollow, and the diameter does not have to be adjusted to the opening I 4. Therefore, in the present example, a plurality of thin protrusions 20 having a shape extending as follows are provided. The number, diameter, or cross-sectional shape of the projections 20
• the protrusion 20 in this example is constituted by four ribs 25 respectively extending in the radial direction from the central axis 24. By these, the protrusion 20 extending in a columnar shape as a whole is formed.
• the projections as a whole have an outer diameter of about 5 mm and a degree of about 5 mm, and they protrude about I 2 mm from flange face I7. As described above, these protrusions 20 are arranged so that their central ridges 24 are equally spaced along the periphery of the opening I4.
• Each rib 2 5 is approximately flanged It is gradually narrowed from the connecting part 2 7 connected to the face 1 7 to the tip 2 3, and the tip 2 3 of the rib 2 5 is rounded so that the tip of the projection 20 is not pointed. It is processed into a shape. In the vicinity of the connecting portion 2 7, the width of the rib 2 5 is slightly expanded toward the tip 2 3 opposite to that near the tip, and the portion near the connecting portion 2 7 is made smaller and the portion near the surface 1 7 The strength is slightly weakened. The length of the rib is extended from the connection part 27 to the length 25a which is approximately equal to the thickness of the formwork 40, for example, 3.2 mm to the tip 23.
• the projection 20 has a width of 25 b again corresponding to a form having a different thickness, for example, a form having a thickness of 4.5 mm, and at least two kinds It can be set in the formwork of In order to penetrate the formwork of a commonly used steel plate with a thickness of 3.2 to 4.5 mm, the length of the protrusion is preferably about 6 mm or more, and the insert 6 needs to be small.
• the length may be approximately the same as the thickness of the mold. If the insert 6 is large and a large load is applied when injecting concrete, etc., increase the diameter of the protrusion 20 or add a sheath etc. to the set hole 41 to set the protrusion 2 It is also possible to increase the adhesion area of set hole 4 1 with 0.
• the length of the projection 20 can be selected according to the condition of the mold, such as a sheath.
• the protrusion 20 having such a shape may be integrally molded together with the main body 1 1 including the flange portion 16 using a mold, or the protrusion 20 may be cut out or the flange portion 1 You may attach to 6 using an adhesive.
• formwork 4 0 has an area 4 2 intended to face the insert, ie an area facing opening 1 4 of the insert holder.
• the Setting holes 4 1 of approximately the same small diameter are opened in advance at the same intervals as the projections 2 0. Therefore, in the durable formwork 40 of this example, a plurality of setting holes 4 1 are opened outside the area 4 2, and no holes are opened in the area 4 2 where the opening of the insert is located.
• the tip 23 of the projection 20 is shaped like a needle or nail like a spire. You do not need to, but it is good enough to be gradually thinner to guide the projections 20 into the holes 4 1 smoothly. Rather, in order to prevent damage to the formwork 40 and not to damage the gloves worn by the workers, the edges may be dropped, hemispherical, or semicircular as in this example. It is desirable.
• the setting holes 4 1 opened in the formwork 40 may be very small according to the projections 20.
• the diameter of the set hole 41 is preferably a size that naturally clogs in the bottom of the concrete, for example, a diameter of about 8 mm or less.
• the outer diameter of the protrusion 20 is about 2 mm or more, preferably about 3 mm or more, and the inner diameter of the setting hole 41 is also a protrusion.
• a total of 2 mm or more is preferable, and 3 mm or more is preferable.
• it is about 10 mm in diameter, it can be easily closed by applying a tape instead of welding, etc. Therefore, even if the position of the insert changes up to this extent, the formwork is affected. You do not have to give
• FIG. 3 shows a state in which insert 6 is set to formwork 40 using insert holder 10 of this example.
• the protrusion 20 of the insert holder 10 of this example is shaped so that the rib 25 is combined with a cross and can be deformed substantially elastically according to the inner diameter of the setting hole 41. Therefore, the projection 20 can be inserted into the setting hole 41 relatively easily, for example, only by a worker pushing by a hand or tapping with a hammer.
• the tip 23 of the projection 20 in this example is rounded and thin, if the projection 20 is in the vicinity of the setting hole 4 1, it will fit into the setting hole 4 1 by itself, so it takes time and effort. Work can be done in a narrow space.
• the insert holder 10 of this example can be set simply by inserting from the surface 40 a side of the formwork, it can be operated by one person.
• the projection 20 When the projection 20 is inserted into the setting hole 41, it deforms substantially elastically inside the setting hole 41, squeezing the inner surface of the setting hole 41, and inserting the insert including the insert. Sufficient adhesion is obtained to set the retainer 1 0. Further, since the projections 20 are made of resin, they do not damage the mold 40 or the setting holes 4 1 opened in the mold, so the durability of the mold is not impaired. Therefore, the insert holder can be set any number of times using the same setting hole 4 1. Furthermore, the protrusion 20 of this example spreads where the portion 25a corresponding to the thickness of the mold 40 passes through the setting hole 41 and compresses the mold 40 from the back side 4Ob. For this reason, the insert holder 10 is set sufficiently firmly in the formwork 40 by the projection 20, and even if the concrete is poured into the formwork 40, the insert 6 is in a predetermined position. There is no slippage.
• flange face 1 will hit formwork surface 40a and prevent intrusion of concrete into flange face 17 inside. Do. There are slight irregularities on the surface and flange surface of the mold Also, a slight gap 43 may occur between the surface 40 a of the formwork and the flange surface 17 due to a slight inclination at the set angle of the solder, etc. is there. However, in the present example, since the seal 31 is sandwiched between the surface 40 a of the formwork and the flange face 17, even if such a gap 43 occurs, the seal is held there. There is no risk of intrusion. Since the seal material 31 is made of elastic foam plastic, it can also absorb minute irregularities on the surface 40 a of the formwork and the flange surface 17, and the minute spots generated partially.
• the sealing material 31 is a thin film, the adhesion of the insert holder 10 is not reduced even if it is between the flange face 17 and the formwork 40, and a new gap is generated. There is no cause either.
• the seal 3 1 is processed into a ring shape, it only needs to be hooked around the protrusion 20, and it does not take time for mounting.
• insert holder 10 of this example can easily insert insert 6 into formwork 4 0 simply by inserting protrusion 20 into setting hole 4 1 prepared in formwork 4 0 in advance. It can be set to In addition, no bolts are required to attach insert 6 to formwork 40, and even a single worker can easily set up the molds in a short time. It is not necessary to attach a mounting jig such as a boss on the formwork side, and it is sufficient to prepare a small diameter setting hole 4 1.
• Figure 4 shows how the insert holder 10 of this example and the buried concrete container product 2 of insert 6 are demolded.
• the inner formwork which forms the inner surface of the lock, etc., is suspended along with the concrete case block 2 after the outer formwork is removed, and shock or vibration or air pressure is used to -It is taken out from the inside of block 2.
• the force when the formwork 40 is removed from the concrete product 2 acts on the connection portion 2 7 of the projection 20, and the projection 2 0 is cut off.
• the weight of the inner formwork acts as a shear force, and the projections are cut. Therefore, the flange surface 17 of the insulator / retainer 10 is exposed on the surface of the removed concrete container product 2 and the flange surface 17 of the protrusion is cut off on this flange surface. It will remain.
• the formwork may be pivoted and removed.
• the formwork may be pivoted and removed.
• a sufficient force is applied to the formwork to separate the formwork from the concrete product and this force acts on the contact portion 2 7 of the protuberance 20, contact is made as described above.
• the projection is cut off from the heel part.
• the projection 20 may be pulled out of the set hole 41 in the opposite direction.
• the force acting at the time of demolding releases the insert holder 10 from the formwork 40. In this way, if the insert is buried using the insert holder of this example, no extra process such as removing the setting bolt is required, and the insert or insulator may be removed.
• Unembedded container such as retainers Take out in the same process as the product. Can perform mold work. Even if the insulator / retainer is set out of the reach of the operator such as the inner formwork or the place where the turning radius of the formwork is small, these insert holders can be used when removing the formwork. It is not an obstacle at all. Furthermore, since no members that interfere with the surface of the container or the like are used, it is possible that the surface of the container may have an adverse effect such as chipping during removal from the mold. Absent.
• the ingress of concrete in the flange face 1 7 is reliably prevented by applying a seal 3 1.
• the solder of the solder joint does not intrude into the setting hole 41, and the remaining projection 28 does not adhere to the inside of the setting hole by the concrete.
• the flange face 17 that is framed by the seal 31 clearly appears on the surface of the removed concrete waste product, an insert is embedded when working in the field. The location is clear, and the appearance of the product is also good.
• Figure 5 shows how to use the insulator 6 embedded in the concrete product 2.
• This member 32 can be easily combined with the beam 32a supporting the member 32 by pushing a narrow jig such as a radio pliers 39 into the boundary between the member 32 and the flange face 17. Can be removed.
• this member 3 2 is removed, it will appear as an open square 1 4 connected to the insert 6 through which the insert 6 can be used.
• the seal 31 is provided at the edge of the flange face 17, the member 32 covering the opening 14 will not be buried in the concrete. It is desirable to remove the insert immediately before using it, as the covering member 32 can protect the insert from waste and rainwater in transit or storage.
• the flange face 1 7 has only cut traces 2 9 of protrusions, and no work such as mortar filling is particularly necessary. Even when the protrusions 20 remain unbroken, these protrusions can be easily processed by cutters, scissors and the like.
• the projections having a shape that is substantially elastically deformed are not limited to this example.
• it is elastically deformed such as approximately crescent, polygon, star, etc., which contacts the inner surface of the set hole at two or more points, or deforms along the shape of the set hole with some plastic deformation.
• a projection can be adopted.
• it may be a protrusion having a shape that periodically repeats unevenness in the longitudinal direction or circumferential direction of the protrusion, or a hollow cylindrical protrusion.
• high adhesion can be obtained by using an elastic material such as rubber or soft vinyl chloride as a material of the projections.
• FIG. 6 shows another example of the insert holder of the present invention.
• the insert holder 10 has a disk-like flange portion 16 and three protrusions 7 from the side of the surface 17 facing the formwork 40 of the flange portion 16. 0 is prominent. Also, 3 bumps from the back side 1 9 of flange part 1 6 Raised to ⁇ 9 force ⁇ , protruding to the opposite side of the previous protrusion 70.
• projections 70 and 79 are disposed outside the opening 14 formed at the center of the flange portion 16 and there is no interference between the opening 14 and the projections 70 or 79.
• an adhesive layer 33 is provided along the outer periphery of the surface 17 of the flange portion.
• the insert holder 10 of this example can be used in combination with the insert holder 90 conventionally used at the construction site.
• This conventional insert holder 90 has three holes 9 9 in the flange 9 6 so that it can be attached by nailing to a plywood formwork and one end of the hexagonal high nut 9
• the cross section of the cylinder 9 1 is hexagonal so that it can be inserted and supported from 9 3. Inserting the projection 7 9 of the insert holder 10 of this example into the hole 9 9 of the conventional insert holder 90, the insert holding of substantially the same configuration as that described in the above embodiment can be obtained. You can get the In the combined insert holder, the projection 70 projects from the periphery of the opening 14 in communication with the insert 9 to the opposite side of the cylindrical body 91 to the mold.
• a buried metal object is configured using a hexagonal nut 9 and a U-shaped reinforcing bar 9a inserted into one end of the nut 9. It is
• Fig. 7 (a) shows that insert 9, insert holder 90 and insert holder 10 are combined and set in formwork 40.
• the projections 70 used here are, as shown in cross section, an upper half 7 2 that is approximately conically extended from the tip 7 3 and a cylindrical lower half that is thinner than the upper half 7 2. It has a part 7 5
• the upper half 7 2 of the projection has a so-called peak-and-arrow shape, and the widened bottom 7 4 of the upper half 7 2 is the portion where the upper half 7 2 and the lower half 7 5 are connected 7 From 6 on the insert holder side.
• the length of the lower half 75 is approximately the same as or slightly longer than the thickness of the mold 40 It is set to, and a notch 7 8 is provided in the part connected to flange part 1 6.
• Figure 7 (b) shows how to remove the finished product 2 from the mold.
• the protrusion 70 acts on the lower half 75 of the protrusion 70, in particular, the notch 8 in the protrusion 70, so that the protrusion 70 is cut off.
• the marks 29 of the protrusions remain on the insulator holder.
• the strength of the upper half 72 may be slightly weakened, and the foot portion may be broken by the force of die removal so that the projection 70 can be removed together with the insert holder.
• FIG. 8 exemplifies a projection having a shape different from the above.
• the rough shape of the projection 70 shown in Figs. 8 (a) and 8 (b) is that the upper half 72 spreads like a truncated cone from the tip 73, and the lower half 75 is gradually narrowed. ing.
• the projection 70 shown in FIG. 8 (a) is a pillar that protrudes from the insert holder 1 0 toward the tip 7 3 and a tip 1 3 3 and the post 1 0 1 is bent with the above.
• a member 102 having side surfaces from the upper half to the lower half and a force are provided, and a gap is provided between the support column 101 and the member 102.
• each member constituting such a projection moves elastically, it is suitable when forming the projection using a hard plastic excellent in moldability, for example, A B S resin, P P 0 or the like.
• FIG. 9 shows an insulator embedded in a concrete product as a second embodiment of the present invention.
• the insulator 60 is formed of plastic such as reinforced polyethylene, and a protrusion 20 is provided on the side of the opening 65 of the insert.
• the insert 60 is provided with a substantially cylindrical insert body 61. This body 61 is closed in the same manner as a commercially available insert, with the embedding side 63 closed.
• a female screw 67 is formed inside the housing, and further, a stopper 64 extending outward from the main body is provided.
• a disk-like flange portion 6 6 is provided, which extends outward from the insert main body 6 1, and the flange portion 6 6 and the stopper 6 4 It is connected by a book lever 6-8.
• FIG. 10 shows an enlarged view of the protrusion 20 of this example.
• the inside of the projection 20 in this example is a hollow cylindrical shape, the corner of its tip 23 is dropped, it is easy to insert into the setting hole, and it is made not to damage the worker or the work clothes.
• the connecting portion 2 7 between the projection 20 and the flange surface 6 7 is formed with a circumferential recess 2 6 so that the cross section of the portion becomes smaller. Therefore, when the mold is released, the protrusion 20 is cut from the recess 26.
• An adhesive tape 3 3 is attached to the surface 6 2 of the flange portion.
• the adhesive tape 3 3 covers substantially the entire surface of the flange portion from the edge of the surface 6 2 to the periphery of the projection 20 except for the opening 6 5.
• the surface of the adhesive tape 33 is covered with a protective film 35, and the protective film 35 is divided on both sides of the projection 2.0 so that it can be easily separated even by a worker wearing a glove. It has an outer piece 3 6 that extends outward from the flange 6 6.
• Figure 11 shows how to set the mold 60 of this example to formwork 40.
• First hold the outer piece 3 6 to remove the protective film 35, and fit the projections 20 into the setting holes 4 1 prepared in the formwork 4 0 respectively.
• This Insert 6 0 is set to formwork 4 0.
• the adhesive tape 33 hits the surface 40 a of the mold, the adhesive tape 33 adheres to the surface 40 a of the mold so the flange surface 62 and the surface of the mold 40 a There is no gap between them and it can prevent the intrusion of concrete into the opening 65 or the setting hole 4 1.
• the projections 20 are disposed on both sides of the opening 6 5 so that the projections 20 and the opening 6 5 do not interfere with each other. Therefore, in the insert of this embodiment as well, the projections 20 are not affected by the diameter of the openings 65 as in the above embodiment, and projections of appropriate diameter can be integrally formed with the insert.
• the protrusion 20 in this example is cylindrical, and has a size that fits in a state of tight fitting or stop fitting with the setting hole 4 1 opened in the formwork 4 1. Therefore, even if the projection 20 has a small diameter, sufficient adhesion can be obtained to set the insert 60 in the formwork.
• the setting holes 41 opened in the formwork 40 may be small in accordance with the protrusions 20. Therefore, it is easy to change the place for setting the insert, as in the above embodiment.
• Fig. 12 shows how the buried product 2 of the insert 60 of this example is demolded.
• the cylindrical protrusion 20 is cut from the recess 26 by the force applied during demolding. Therefore, in the same manner as the above embodiment, the mold 60 of the present example can be removed from the formwork in as few processes as the concrete product without the embedded object.
• a cylindrical projection is used, if the diameter becomes large, the circular cross section may be distorted at the time of cutting, or it may be crushed in the circumferential direction, and the projection may not be cut smoothly because of these. Ru.
• the outer diameter of the protrusion is about 1 O mm or less, preferably within about 3 to 8 mm. It is possible. Therefore, the projections are beautiful It is disconnected and there is no such a worry as mentioned above.
• the cylindrical shape it is also possible to adopt a cylindrical protrusion having no hollow portion.
• Fig. 13 shows an insert 60 with projections of different shape. Furthermore, Fig. 14 shows a state in which the projection 20 is enlarged, and Fig. 15 shows the state in which the projection 20 is inserted into the setting hole 41 of the mold. Common parts of insert 6 0 in this example are assigned the same reference numerals and descriptions thereof will be omitted.
• the cross section of the projection 20 in this example is approximately crescent-shaped, and the width L 0 of this crescent-shaped projection differs depending on the position, but the inner diameter of the setting hole 4 1 prepared in the formwork 4 0 at the maximum position. It is somewhat wider.
• the tip 2 3 of the projection 20 becomes a crescent-shaped cross-section gradually to a crescent-shaped cross-section in order to smoothly guide the projection 2 0 to the setting hole 4 1, and further becomes hemispherical as it goes to the tip It is getting thinner.
• the projection 20 having a cross section which makes contact with such a setting hole at least at two points is elastically deformed along the setting hole 4 1 of the formwork 40, it is similar to the above-mentioned insulator ⁇ In this example, insert 6 0 can be set to formwork 4 1.
• this projection 20 is also separated by the force when removing the formwork, it can be removed in the same process as a concrete product without a buried insert.
• FIGS. 16 and 17 show embedding of the adjustable-length sleeve 120 as Example 3 of the present invention.
• the sleeve 120 of this example comprises a cylindrical main body 1 21 and a cylindrical slide portion 1 2 3 that expands and contracts while in contact with the inner surface 1 22 of the main body 1 2 1 There is.
• the end 1 2 4 of the slide portion 1 2 3 3 can be flared and applied to another form, eg, an outer form 4 5.
• a stopper 1 2 5 is provided inside the main body 1 2 1 so that the slide section 1 2 3 does not protrude to the setting side 1 2 7.
• On the setting side of the main body 1 2 1 is formed a flange 1 2 6 which spreads outward.
• the flanges 1 2 6 and the formwork 4 0 are in contact with a wide flat surface 1 2 7 to prevent the leakage of concrete into the interior of the sleeve.
• two projections 70 project from this surface 117 on the opposite side to the main body 1 2 1.
• the two projections 70 protruding from the sleeve 120 of this example are elongated and located outside the opening 1 2 9 of the sleeve as in the above embodiment.
• Each protrusion 70 has an elongated support 1 0 5 and a wedge-shaped portion 1 0 6 extending inwardly at its tip, with the wedge-shaped portions 1 0 6 facing each other.
• the distance L 2 between the columns 105 is smaller than the distance L 1 between the centers of the setting holes 4 1. For this reason, when the protrusion 50 of the sleeve 120 of this example is inserted into the setting hole 41 of the formwork, the inward facing surface of the support column 105 abuts against the setting hole 41, and this portion Insert frame 4 0.
• the end of the protrusion 0 is the form. It will be in a state of being caught on the back surface 40 b, and the formwork 40 will be sandwiched between the tip of the projection 70 and the flange surface 1 2 7 of the main body. In this way, the two projections 70 provide sufficient adhesion to set the slave 120 of this example.
• the relationship between the distance L 2 between the columns and the distance L 1 between the setting holes 4 1 may be the reverse of this example, and the ridged portion may of course extend outward. If three or more protrusions are provided along the periphery of the opening, adhesion may be obtained by changing the pitch circle diameter of the protrusions and the pitch circle diameter of the set holes.
• Figure 17 shows the demolition of concrete products with embedded slaves.
• the protrusion adopted in this example is also automatically cut off from the sleeve 120 by the force at the time of mold removal, so no work is necessary before removing the formwork, and the position to embed the sleeve is limited. Nor. It can be removed in the same working process as a concrete product without a buried sleeve, and the wall can be penetrated to the desired position. It is easy to form a perforated product with holes.
• the slide section allows easy adjustment of the length of the sleeve in this example, so it is possible to cope with products with different wall thickness with a small number of types of sleeves.
• FIG. 18 shows, as Embodiment 4 of the present invention, a plug 50 for setting the insert in the formwork in a state of being inserted into the opening of the insert.
• This plug 50 is an integral molded product made of synthetic resin as in the above embodiment, and is a cylindrical main body 5 1 hollow inside and screwed into the opening of the insert 6, and the opposite side from the main body 5 1 And a projection 20 projecting in the direction of the formwork 4 0.
• a substantially flat setting surface 52 is formed on the side facing the formwork 40 of the main body 51, and a protrusion 20 protrudes from the approximate center of the setting surface 52.
• the set surface 52 has a pair of recesses 80 formed on both sides of the projection 20. A jig is inserted into these recesses 80 and turned as described later. It can be removed from the bag.
• the main body 5 1 has a male screw formed on the outer peripheral surface 5 3, and is provided with a flange portion 5 5 that spreads to the outside of the main body 5 1 on the side that contacts the formwork 4 0.
• the side of the flange portion 5 5 facing the formwork 4 0 is the setting surface 5 2.
• the outer peripheral surface 5 6 of the flange portion 5 5 narrows in a substantially conical shape in a direction away from the setting surface 5 2, and the main body is removed from the insert 6 embedded in the concrete product. At the same time, flanges 5 do not interfere with the concrete products.
• a thin film 3 7 extends from the flange portion 5 5 like a skirt.
• the protrusion 20 employed in the plug 50 of this example is substantially cylindrical, and the tip 23 thereof has a corner which is smoothly narrowed.
• four ribs 25 extending substantially in the shape of a triangle in the radial direction of the protrusion 20 are provided on the outer periphery of the protrusion 20.
• the surface 22a facing the end of this rib 22 extends radially from the end 23 toward the setting surface 52, while the surface 22b facing the setting surface 52 is reversed. It spreads from the setting surface toward the tip.
• the point 22c where these faces 22a and 22b are combined is at a position corresponding to the thickness of the formwork. Therefore, when the projection 20 is inserted into the setting hole opened in the formwork, the surface 22a of the rib 22 spreads when passing through the setting hole, and the setting hole is compressed by the surface 22b. For this reason, a force that pulls the plug 50 onto the mold acts on the projection 20, and even with the small-diameter projection 20, sufficient adhesion can be obtained to set the insulator in the mold.
• the connection portion 2 7 of the projection 20 gradually narrows toward the setting surface 5 2 and is cut from the contact portion 2 7 by the force during demolding.
• the plug 50 of this example is a cylindrical shape opened on the opposite side to the projection 20 with respect to the setting surface 52, and the inside 5 7 is hollow. It is. And, a projection 20 thinner than the inside of the main body 5 1 extends from the setting surface 52 to the opposite side to the main body 5 1.
• the plug 50 of such a configuration can be molded from each side using a mold formed by the protrusion 20 and the main body 51 with the setting surface 52 interposed therebetween. That is, the side from the setting surface 52 to the mold frame 40 can be formed using a mold for forming the protrusion 20 and the opposite side can be manufactured using a mold for forming the main body 5 1. Therefore, they can be easily integrally molded using plastic materials such as polyethylene and polypropylene.
• the outer diameter of the main body 5 1 is often 8 to 5 O mm or more in accordance with the inner diameter of the insert.
• the cooling time will be long, which may cause sinks and bubbles.
• the wall thickness is about 4 mm or more, distortion occurs due to sinking
• the dimensional accuracy of the main unit 5 1 is easily degraded.
• the plug 50 of this example can design and shape the projection 20 and the main body 51 respectively, the wall thickness of the main body 51 can be appropriately selected. Therefore, as in the plug of this example, it is possible to form small projections on a body having a large outer diameter and a thin wall thickness.
• FIGS. 1 9 to 2 the process of manufacturing a container-on-instrument product in which the insulator 6 is embedded using the plug 50 of this example will be described. As shown in Fig.19, in order to set the plug 50, in the formwork 40 one setting hole 41 is opened where the opening of the insulator 6 is installed.
• the setting hole 41 may have a small diameter in accordance with the protrusion 20, and it is possible to flexibly cope with the change of the setting position of the insulator as in the above embodiment.
• the insert 6 can be attached by the external screw provided on the outer periphery 5 3 of the plug body 5 1. If the projection 20 is inserted into the setting hole 4 1, the insert 6 can be molded through the plug 50.
• the frame 40 is set to a predetermined position.
• the projection 20 is designed to fit into the setting hole 41, and as described above, when the projection is pushed in, the rib 22 is spread on the. Since 40 is pressed, high adhesion can be obtained. There is no need for a large work space, as the setting work of the insert can be done by one person from the surface 40 a side of the formwork and the insert can be set if the hand of the worker delivers it.
• using the plug 50 of this example simplifies the task of setting up the insert.
• the plug 50 When the plug 50 is set to the formwork, it adheres to the surface of the thin film-like member 3 7 force formwork which extends like a skirt from the setting face 52 toward the formwork, and around the setting face 52. Is sealed from the container.
• the projection 20 from the connection part 2 7 It is cut off. Therefore, when using the plug 50 of this example, even if an insulator is set anywhere in the formwork, the surface of the concrete box can be made without the time and effort as in the prior art. A smooth release is possible without damage.
• the cut protrusion can be easily removed since it presses the back surface 4 O b of the formwork by the surface 2 2 b of the rib 2 2.
• the setting surface 52 appears on the surface of the finished product, and the operation unit 80 appears recessed on the setting surface 52. Since the projections 20 are already cut, there are only cut marks 2 9. Since the operation unit 80 is on the surface of the container / consumer product, it is easy to insert the jig 85. By rotating the inserted jig 85, the main body 51 can be removed easily. In this example, since the periphery of the setting surface 52 is sealed from the container by the skirt-like member 37, the setting surface 52 clearly appears on the surface of the container and the insulator is It is easy to understand the position of In addition, since the lock box does not solidify on the setting surface 52, the operation of the operation unit 80 can be performed reliably.
• the plug 50 can be removed immediately before using the insert 6, and the plug 50 can prevent the insulator from being clogged with dirt and rainwater.
• Figures 2 2 and 2 3 show examples of different plugs 50 from the above.
• three projections 20 project from the setting surface 52.
• the shape of each of the protrusions 20 is substantially the same as the shape of the protrusion of the first embodiment described based on FIG.
• a single groove 84 is formed as an operation portion 80 substantially at the center of the setting surface 5 2 of this example.
• the projections are formed separately from the main body 5 1 by the setting surface 5 2, a plurality of projections 2 0 can be provided, and the arrangement and the size can be freely selected.
• the shape of the recess for operation with the jig is As shown in the example, it is possible to form not only one groove but also various kinds of grooves such as cross grooves and dents into which hexagonal wrenches are inserted. As described in detail using the above embodiments, if the concrete / embedded article according to the present invention is used, it is not limited by the method of mold removal or the radius of curvature of the mold, etc. You can set the place to be buried with an insulator or a slave.
• the projections for attaching the buried object of the present invention to the formwork can be made thin, the setting holes opened in the formwork can be small. Therefore, it is possible to flexibly respond to changes in the burial position, etc., and there is no need to newly add a formwork or to repeat the formwork repair every time the change is made. Inserts can be buried anywhere without compromising the life of the durable formwork. Therefore, with respect to factory prefabricated products that demand is expected to grow in the future, it will be possible to reduce the cost of products with embedded objects such as insulators in the locations requested by customers, without restricting the embedded locations such as inserts. In addition, it can be supplied in a short time.
• the embedded object of the present invention can be integrally molded with a resin such as plastic, and can be mass-produced inexpensively, a large number of inserts or inserts embedded in the inner wall of a joint groove, etc. Ideal for holding tools.
• the concrete buried article of the present invention is placed in a predetermined position in the formwork, such as an insert, and buried in a concrete product.
• it can be easily set to the position where it was previously difficult to embed a buried object such as an insulator, such as the inner formwork which can not be reached by workers, or the place where the turning radius is small. It is a concrete / fill-in-place structure that can be removed without much effort.

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