JP2010115905A - Embedded plug fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embedded member fixing device easily and inexpensively manufactured with a small number of components and easily and surely fixing an embedded member to a form. <P>SOLUTION: An embedded plug 2 provided with a vertical hole 1 inside is mounted inside the form 4 by a mounting member 3 fitted to the vertical hole 1, and a linear member 5 going outside from the form 4 is connected to the lower side of the mounting member 3. A receiving body 6 of a pull-down member is attached to the lower end of the linear member 5, and the pull-down member 8 fixed to a horizontal shaft 7 arranged below is engaged with the receiving body 6 by rotating to one side and detached from the receiving body 6 by rotating to the other side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an embedding plug fixing device that fixes an embedded plug embedded in a concrete product to a mold when the product is molded and removes the embedded plug from the mold when the product is removed.

As a device for fixing the embedded plug, a guide tube is provided on the back side of the slab mold corresponding to the installation position of the embedded plug collar, and an elevating tube that is pushed up by a cam and lowered by a spring is provided in the guide tube. A horizontal hole is provided around the elevating cylinder. When the elevating cylinder is pushed up into the horizontal hole, the elevating cylinder escapes into an escape groove provided in the guide cylinder. When the elevating cylinder is lowered, the locking shaft of the embedded plug collar is tightened. A configuration in which a ball that engages the head and lowers the head is inserted is known. (For example, see Patent Document 1)
Japanese Patent No. 957597

However, the fixing device for the embedded plug has the following problems.
(1) Since the stop shaft is formed of a rigid material and the distance between the hook provided at the upper end and the head provided at the lower end does not change, the stop shaft is provided at the lower end and the upper portion of the embedded plug. If there is a variation in the distance to the part that engages, the fastening by the stop shaft will vary, and the embedded member cannot be fixed to the mold under uniform conditions. Although several interlocks are intended, a few interlocks are the limit when using an embedded member with low dimensional accuracy.
(2) Since the structure is complex, many parts are required, and many of them require manufacturing accuracy, and it takes time to assemble the parts. Therefore, the manufacturing cost is high and the material price increases. At present, however, there is a strong demand for the appearance of an inexpensive fixing device.
(3) Since the stopper shaft, escape groove, ball, spring, etc. are sealed in the cylinder, when the concrete product is molded and steam-cured and then removed from the mold, the water condensed by the steam is inside the cylinder. Since it will flow into and stay and corrode each member, it may stop moving if it is not used for a few months.
(4) When fixing a plurality of embedded member fixing devices with a predetermined interval on a formwork, it is essential to adjust the operating conditions of each device to be constant. Takes time.

An object of the present invention is to solve the above-described problems, and to provide an embedding member fixing device that can be easily and inexpensively manufactured with a small number of parts, and that the embedding member is fixed to the mold easily and reliably. Is the issue.

  In order to solve the above-described problems, an embedding plug fixing device according to the present invention employs the following configuration.

  According to the first aspect of the present invention, an embedding plug provided with a vertical hole is attached to the inside of the mold with an attachment member engaged with the vertical hole, and the mounting member protrudes outside the mold. An extension member is continuously provided, and a receiving member for a lowering member, which will be described later, is attached to the lower end of the extending member. A horizontal axis perpendicular to the axis of the mounting member is disposed below the receiving member. It is formed in a bowl shape by a spring material, and a lowering member is attached that engages with the receiver when the horizontal axis is rotated to one side and is separated from the receiver when rotated to the other side.

  In the invention according to claim 2, a stopper is provided near the receiver attached to the lower end of the mounting member to prevent the receiver from escaping when the lowering member is engaged with the receiver.

  According to a third aspect of the present invention, a groove is formed in a peripheral wall of a fitting portion that is provided in a lower portion of an attachment member that attaches the embedded member to a mold and is fitted into a hole formed in the mold, and the mold is formed in the groove A ring made of rubber or the like that is in contact with the hole wall of the frame and elastically corrects when the exposed portion is displaced with respect to the hole is fitted.

  The invention according to claim 4 attaches the embedded plug having a vertical hole inside to the inside of the mold by loosely fitting the vertical hole to the mounting cylinder having the lower end fixed to the mold, The inner hole of the mounting cylinder has one end protruding upward from the mounting cylinder and the other end fitted with a lifting shaft that protrudes downward from the mold frame. A cylinder such as rubber is fitted between the mounting cylinder and a holding body provided at the upper end of the lifting shaft, and the tip of the portion protruding downward from the mold of the lifting shaft is disposed on one side thereof. A fixed lever is connected to the shaft.

Advantages of the Invention According to Claim 1 (1) Since the lowering member for lowering the receiver is formed of a spring material, when the mounting member is attached to the embedded member, the position of the receiver is somewhat increased by tightening the screw. Even if a difference occurs, the pulling member is elastically deformed when the receiving body is pulled down, so that the position difference is absorbed and the embedding member is securely fixed to the mold. In addition, the pull-down member formed of a spring material absorbs the difference in the mounting conditions of each embedded member with the above characteristics even when 10 or more fixing devices are interlocked. Done.
(2) Since the structure of the apparatus is simple, the number of parts to be used is small, the manufacture of the parts is easily performed without requiring accuracy, and it is not necessary to assemble, so that the fixing apparatus 1 according to the background art is used. Can be manufactured at a price of / 3 or less, and can fully satisfy the demand of consumers for price reduction.
(3) Since the lowering means of the receiver has an open structure, when the concrete product is molded and steam-cured and then demolded, the water that is condensed by the steam may flow out of the hole in the mold and be applied to the lowering means. Even if it is, the water is well drained and it is easy to be air-dried, so it is hard to rust, and even if it rusts somewhat, it works normally.
(4) Since a receiving member is attached to the mounting member of the embedded member with an extending member, and only the fixing member is fixed to the horizontal axis corresponding to this receiving member, no adjustment is required. And can be operated.

  The effect of the invention according to claim 2 When the lowering member rotated on the horizontal axis engages with the receiver, when the lowering member tries to move the receiver, the stopper engages with the receiver and In order to prevent escape, the receiving member is reliably lowered by the lowering member, and the fixing of the embedded member to the mold is stabilized.

  When the fitting part provided in the lower part of the attachment member is fitted into the hole of the mold, when the exposed part is biased with respect to the hole, the ring of rubber or the like hitting the peripheral wall of the hole is biased. Since the side is strongly compressed, the fitting portion is moved by the restoring force to correct the bias, so that the operation of inserting the fitting portion into the hole and correctly supporting the embedded member on the mold can be quickly performed.

Advantages of the Invention According to Claim 4 (1) When the embedded plug is fitted into the mounting cylinder fixed to the mold and the lifting shaft fitted to the mounting cylinder is pulled down, the holding plate provided at the upper end of the lifting shaft is , By compressing a ring such as rubber between the mounting cylinder and frictionally coupling with the vertical hole of the embedded plug by expansion in the diameter direction of the ring, the pulling-down force of the lifting shaft is applied to the embedded plug, The embedding plug can be securely fixed to the formwork, and since all of the apparatus is attached to the formwork and does not need to be attached or detached, labor saving and efficiency can be improved.
(2) Since the structure of the apparatus is simple, the number of parts to be used is small, the manufacture of the parts is easily performed without requiring accuracy, and there is no need to assemble, so the fixing apparatus 30 according to the background art is used. % Can be manufactured at a price of less than or equal to%, and can fully satisfy the customer's demand for price reduction.
(3) When fixing the mounting cylinder that supports the embedding plug to the mold, and demolding after molding the concrete product and steam curing, it was made to prevent the water from condensation from flowing out of the mold. Condensed water does not splash on the lifting shaft or lever, causing rust.
(4) Since only the lever fixed to the horizontal axis is connected to the lower end of the lifting shaft supported by the mounting cylinder fixed to the mold, no adjustment is required. It can be carried out.

  Embodiments of an embedding stopper fixing device according to the present invention will be described below with reference to the drawings.

  FIGS. 1 and 2 show an embodiment of an embedding stopper fixing device according to claim 1, and this embodiment is an embedding with a vertical hole 1 provided therein as shown in FIGS. 1 and 2. The insertion plug 2 is attached to the inside of the mold 4 with an attachment member 3 fitted in the vertical hole 1, and an extension member 5 that extends outward from the mold 4 is provided below the attachment member 3. A lower member receiving member 6 is attached to the lower end of the lower member, and a horizontal shaft 7 is disposed below the receiving member 6 to receive the lowering member 8 formed in a bowl shape with a spring material. It is constructed so as to correspond to the body 6 and is configured to engage with the receiver 6 when the pulling member 8 is rotated to one side by the horizontal shaft 7 and to be detached from the receiver 6 when rotated to the other side. .

  The embedded plug 2 has a female screw 9 formed at the upper part of the vertical hole 1 provided therein, and a flange 10 that is in contact with the inner surface of the mold 4 on the outer side of the lower end.

  The mounting member 3 is formed with a male screw 11 screwed into the female screw 9 of the embedded plug 1 at the upper part, a small flange 12 fitted into the lower part of the vertical hole 1 of the embedded plug 2 at the lower part, and the mold A large flange 14 that fits into a window hole 13 formed in the frame 4 is formed, and an extension member 5 that goes out of the mold 4 is connected to the lower portion of the large flange 14. A receiving body 6 for the lowering member 8 is attached to the lower end of the lower member. The large flange 14 has an annular groove 15 formed around it, and a ring 16 made of rubber or the like is fitted into the annular groove 15 so that the outer periphery thereof is in contact with the peripheral wall of the window hole 13. 5 is inserted and fixed in a hole 17 whose upper portion is opened in the center of the mounting member 3.

  The receiving body 6 is formed with a conical surface, a spherical surface 18 and the like on the upper part with which the lowering member 8 is engaged, and on the opposite side of the lower member 8 with which the lowering member 8 is engaged, as shown in FIG. A stopper 20 that is supported by the stopper 6 is provided close to the stopper 20 to prevent the receiver 6 from escaping when the pull-down member 8 is engaged with the stopper 20.

  The pull-down member 8 is formed of spring steel or the like so as to have a rounded rounded side shape, and a base portion thereof is fixed to the horizontal shaft 7 with bolts 21. As shown in the circle of FIG. 1, the front end portion that engages with the upper portion is formed in a forked shape by forming a notch 22 in the center portion in the width direction.

  As shown in FIG. 4, the horizontal shaft 7 for fixing the pull-down member 8 has an embedded plug 2 that is supported by the mold 4 below the multiple mold 4 where a number of molds 4 are continuously arranged. The pulling member 8 of the receiver 6 is attached to the horizontal shaft 7 in correspondence with the mounting member 3 attached to the embedding plug 2, and the horizontal shaft 5 is shown at one end thereof in FIG. When the handle 23 mounted on the street is rotated to one side, a large number of pull-down members 8 are simultaneously engaged with the receiver 6, and the mounting members 3 attached to the large number of embedded plugs 2 are simultaneously pulled down. Since the operation of fixing the plugs 2 to the mold 4 at the same time is performed, the interlocking operation of ten or more attachment members 3 which has been impossible in the past can be smoothly performed without any trouble.

  As shown in FIG. 3A, the fixing device for the embedded plug having the above-described configuration is provided at the upper end of the mounting member 3 by fitting the mounting member 3 into the vertical hole 1 provided in the embedded plug 2. When the male screw 11 is screwed into the female screw 9 in which the vertical hole 1 of the embedded plug 2 is provided at the upper part, the mounting member 3 and the embedded plug 2 are aligned with each other by the small flange 12, and the large flange 14 is formed. It is coupled so as to come out below the lower surface of the embedded plug 2. Therefore, as shown in FIG. 3 (b), the large flange 4 of the mounting member 3 is fitted into a window hole 13 formed in the mold 4 so that the embedded plug is supported by the mold 4, and FIG. As shown, when the lowering member 8 waiting on the left side of the receiver 6 is rotated toward the receiver 6 by the horizontal shaft 7, the tip of the lowering member 8 that is crotch-shaped by the formation of the notch 22 is shown in FIG. As shown in FIG. 3 (c), the upper part of the receiver 6 is engaged and the receiver 6 is lowered. At this time, the lowering member 8 formed of a spring material lowers the receiver 6 while being elastically deformed. Since the force is transmitted to the mounting member 5 by the linear member 5, the embedded plug 2 is elastically pressure-bonded to the mold frame 4, so that the fixing to the mold frame 4 is performed reliably.

  When the embedding member 3 is fixed to the mold 4 as described above, although not shown in the drawing, the concrete is cast into the mold 4 to form a product, and when the product is demolded, it is lowered. When the member 8 is rotated toward the standby position on the horizontal shaft 7, the pull-down member 8 is detached from the receiver 6 and stops the pull-down of the receiver 6, so that the embedded plug 2 is fixed to the mold 4. When the product is released, the product is removed from the mold 4 along with the product.

  5 and 6 show an embodiment of an embedding stopper fixing device according to claim 2, and in this embodiment, as shown in FIGS. 5 and 6, the embedding device is provided with a vertical hole 1 inside. The plug 2 is attached to the inside of the mold 4 by fitting it into the mounting cylinder 24 that fixes the vertical hole 1 to the mold 4 at the lower end, and one end is attached to the inner hole 25 of the mounting cylinder 24. A lifting shaft 26 that protrudes upward from the cylinder 24 and that protrudes downward from the formwork 4 is fitted to the other end, and a portion of the lifting shaft 26 that protrudes upward from the mounting cylinder 24 is an upper edge of the mounting cylinder 24. And a cylinder 28 made of rubber or the like between the upper and lower shafts 26 and a holding plate 27 provided at the upper end of the lifting shaft 26. The lever 30 fixed to the horizontal shaft 29 arranged in the above is connected.

  The embedded plug 2 has a female screw 9 formed at the upper part of the vertical hole 1 provided therein, and a flange 10 that is in contact with the inner surface of the mold 4 on the outer side of the lower end.

  The mounting cylinder 24 has a fitting portion 32 that closely fits in a lower portion of the vertical hole 1 formed in the embedded plug 2 in the lower portion and a hole 31 formed in the mold 4 in accordance with the vertical hole 1. The flange 33 is formed on the lower side of the fitting portion 32, the flange 33 is fixed to the mold frame 4 by welding 34 or the like, and fitted into the vertical hole 1 of the embedded member 3 of the fitting portion 32. An annular groove 35 is formed in the portion to be fitted, and a ring 36 made of rubber or the like is fitted into the annular groove 35 so that the outer periphery contacts the peripheral wall of the vertical hole 1.

  The lifting shaft 26 is fitted into the inner hole 25 of the mounting cylinder 24 with appropriate looseness, and a boss 37 sandwiched between a pair of levers 30 and 30 fixed to the horizontal shaft 29 is provided at the lower end, The boss 37 and the pair of levers 30, 30 are connected to the levers 30, 30 through the connecting pins 39 in the holes 38. Further, a screw 40 is formed at the upper end of the elevating shaft 26, and a nut 41 is attached to and detached from the screw 40, so that a cylindrical body 28 such as rubber is fitted to the upper portion of the mounting cylinder 24. The cylinder 28 is fixed by disposing the holding plate 27 on the upper side and tightening the nut 41 into the screw 40.

  As shown in FIG. 7 (a), the fixing device for the embedded plug having the above-described structure is embedded when the embedded plug 2 is fitted from above to the mounting cylinder 24 fixed to the mold 4 by the flange 33 at the lower end. 7B, the lower end of the vertical hole 1 is fitted to the upper end of the fitting portion 32 provided in the mounting cylinder 24, and the lower surface of the flange 10 is brought into contact with the mold frame 4 and stopped. Therefore, when the levers 30 and 30 are rotated downward in FIG. 7 (b) by the horizontal shaft 29, the lifting shaft 26 is pulled down as shown in FIG. 7 (c) and attached by the holding plate 27 fixed to the upper end. A cylinder 28 made of rubber or the like supported by the cylinder 24 is compressed. For this reason, the cylindrical body 28 expands in the diametrical direction as shown in FIG. 7 (c), the outer periphery thereof is crimped to the wall surface of the vertical hole 1 of the embedded plug 2, and the embedded plug 2 and the elevating shaft 26 are rubbed together. When the elevating shaft 26 is further lowered by the rotation of the levers 30 and 30, the embedded plug 2 is strongly attracted to the mold 4 and is securely fixed to the mold 4.

  When the embedded plug 2 is fixed to the mold 4 as described above, although not shown in the drawing, a concrete is cast into the mold 4 to form a product. When 30 and 30 are rotated by the horizontal axis 29 in the direction in which the elevating shaft 26 is raised, the elevating shaft 26 is raised and the restraining plate 7 is separated from the cylindrical body 28 such as rubber to stop the compression of the cylindrical body 28. Therefore, the cylinder 28 is elastically elongated to reduce its diameter and is separated from the vertical hole 1 of the embedded plug 2, so that the embedded plug 2 is released from the mold 4 and released from the product. At that time, it is detached from the mold 4 with the product.

To provide a fixing device for an embedding member that can be manufactured easily and inexpensively with a small number of parts, and the embedding member is fixed to the mold easily and reliably.
It is an issue.

The longitudinal side view which shows embodiment of the fixing device of the embedding stopper concerning Claim 1. The longitudinal front view same as the above. (A) (b) (c) is explanatory drawing which shows the state which fixes an embedding stopper to a formwork same as the above. Explanatory drawing which shows the state which used the same as the above in the multiple formwork. The longitudinal side view which shows embodiment of the fixing device of the embedding stopper concerning Claim 2. The longitudinal front view same as the above. (A) (b) (c) is explanatory drawing which shows the state which fixes an embedding stopper to a formwork same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical hole 2 Embedded plug 3 Mounting member 4 Formwork 5 Extension member 6 Receptacle 7 Horizontal axis 8 Pull-down member

Claims (4)

An embedded plug provided with a vertical hole inside is attached to the inside of the mold with an attachment member fitted into the vertical hole,
On the lower side of the mounting member, an extending member that extends outward from the formwork is continuously provided, and a receiving member for a lowering member is attached to the lower end of the extending member.
A fixing device for an embedded plug, wherein a pull-down member fixed to a horizontal axis disposed below the receiver is engaged by rotation to one side and detached by rotation to the other side. . The stopper which prevents the escape of a receiving body at the time of a lowering member engaging with this receiving body near the receiving body attached to the lower end of the said linear member is provided. Implant stopper fixing device. A groove is formed around the fitting portion provided at the lower portion of the mounting member and fitted into the hole of the mold,
2. A ring made of rubber or the like that is elastically corrected when the fitting portion is displaced with respect to the hole is fitted into the groove so as to abut against the peripheral wall of the hole of the mold. Or the fixing device of the embedding member according to claim 2. An embedded plug provided with a vertical hole on the inside is attached to the inside of the mold by fitting the vertical hole with a mounting cylinder fixed to the mold at the lower end,
The inner hole of the mounting cylinder is fitted with a lifting shaft, one end of which protrudes upward from the mounting cylinder, and the other end of which protrudes downward from the mold,
Fitting a cylindrical body such as rubber sandwiched between the upper edge of the mounting cylinder and a holding body provided at the upper end of the lifting shaft to the part of the lifting shaft that protrudes upward from the mounting cylinder,
A fixing device for an embedded plug, wherein a lever fixed to a horizontal shaft arranged on one side is connected to a tip of a portion of the lifting shaft that protrudes below the formwork.

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