JPH0726495U - Support member for concrete insert metal fittings - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to prevent the entry of concrete slag into the female thread of the concrete insert fitting when pouring and filling concrete into the formwork. [Structure] A thread portion is formed on the tubular portion of the support member of the concrete insert metal fitting, and by screwing this screw portion and the female thread portion of the concrete insert metal fitting, the screw valley in the female thread portion of the concrete insert metal fitting is filled. It is in the state where it is set.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a support member for a concrete insert metal fitting, and more specifically, to embed concrete insert metal fittings such as anchor bolts used for connecting various members to a concrete structure in a concrete structure. The present invention relates to a supporting member for supporting the frame.

[0002]

[Prior art]

 Conventionally, as a supporting member for burying concrete insert metal fittings such as anchor bolts in a concrete structure, for example, one having a structure disclosed in Japanese Utility Model Laid-Open No. 52-131840 is known as a conventional example.

A mounting jig (supporting member) for a concrete insert metal fitting of this conventional example is formed in a tubular outer cylinder portion having one end side opened and the other end side closed, and near the one end side of the outer cylinder portion. It is composed of a taper part and an inner diameter knurled part formed in the opening on one end side of the outer cylinder part, and the entire attachment jig (supporting member) is integrally molded with an elastic material such as soft resin.

A method of embedding an insert female screw in a concrete structure using this mounting jig (support member) will be described. First, the screw part formed on one end side of the auxiliary bolt is screwed and fixed at a predetermined position inside the plate (form frame), and the bent portion formed on the other end side of this auxiliary bolt inside the plate (form frame). Mount so that it projects vertically.

Next, the inner diameter knurled part of the mounting jig (supporting member) is inserted into and supported by the bit part of the auxiliary bolt, and further, the insert female screw is attached to the outer cylinder part of the mounting jig (supporting member). By inserting and attaching the female screw portion, the insert female screw is supported at a predetermined position inside the plate (mold frame).

[0006] Then, when concrete is poured into the plate (form) to fill it and the plate (form) is removed after the concrete is sufficiently dried, the auxiliary bolt is attached together with the plate (form) to the mounting jig. It comes off from the inner diameter knurled portion of the (support member).

Further, by pulling out the mounting jig (supporting member) from the female screw portion of the insert female screw, the insert female screw is accurately embedded in a predetermined position of the concrete structure.

[0008]

[Problems to be solved by the device]

 However, in the mounting jig (supporting member) of this conventional example, when the outer cylindrical portion of this mounting jig (supporting member) is inserted into the female thread portion of the insert female screw, the surface of the outer tubular portion and the thread of the female thread portion are Even if they are in close contact with each other, the thread valleys are connected in a spiral shape with a predetermined space, so when concrete is poured into the plate (form), the space inside this thread valley is In addition, a so-called concrete slag penetrates and fills the thread troughs of the female screw portion, and unless the slag is removed, there is a problem that the connecting member screwed to the insert female screw cannot be screwed.

Therefore, the conventional jig for mounting a concrete insert fitting (supporting member) has a problem that must be solved to prevent slag from entering the thread root portion of the insert female screw.

[0010]

[Means for Solving the Problems]

 As a concrete means for solving the problems of the conventional example, the present invention is a support member which is inserted into a female screw portion of a concrete insert metal fitting and supports the concrete insert metal fitting inside a formwork. Is a tubular part that is open at one end and closed at the other end, forms a ring-shaped flange along the outer peripheral edge of the opening at the one end of the tubular part, and adjoins the flange. The present invention provides a support member for a concrete insert metal fitting, characterized in that a threaded portion that is screwed into the female threaded portion of the insert metal fitting is formed in a tubular portion, and a groove portion in which a detachable jig is engaged with the flange portion. Is provided.

[0011]

[Action]

 By screwing the threaded part formed on the tubular part and the female thread part of the concrete insert metal fitting, the thread valley in the female threaded part of the concrete insert metal fitting is filled, and the concrete inside the formwork is filled. Even if the concrete is poured and filled, so-called concrete slag can be prevented from invading the female thread portion of the concrete insert fitting.

Further, by providing the flange portion with a groove portion into which a jig for attachment and detachment is engaged, the tip of a jig such as a screwdriver is engaged with the groove portion to rotate the support member so that the female screw of the anchor bolt is fixed. It can be easily pulled out from the part.

[0013]

【Example】

 Next, an example of implementing the present invention will be described with reference to the drawings. First, in the first embodiment shown in FIGS. 1 and 2, reference numeral 1 denotes a support member for a concrete insert fitting, and the support member 1 includes a tubular portion 2 having one end open and the other end closed. It is composed of a flange portion 3 formed along the outer peripheral edge of the opening on one end side of the tubular portion 2, and a screw portion 4 formed on the outer peripheral surface of the tubular portion 2 adjacent to the flange portion 3. ing. The support member 1 is made of synthetic resin such as plastic and is integrally formed by, for example, an injection molding machine.

The tubular portion 2 has a cylindrical shape having an opening 5 on one end side and a closing portion 6 on the other end side, and a ring-shaped flange portion along the outer peripheral edge of the one end side opening portion 5. 3 are formed continuously and integrally.

Grooves 7, 7 with which a jig such as a driver is engaged are formed in the flange portion 3, and an anchor bolt is formed on the outer peripheral surface of the tubular portion 2 adjacent to the flange portion 3. The screw portion 4 that is screwed into the female screw portion is formed over a predetermined length. The threaded portion 4 may be formed over the entire circumference of the tubular portion 2.

The support member 1 of the present invention thus constructed is used for burying the anchor bolt or the concrete insert fitting 8 shown in FIG. 3, for example. A long nut member 9 is integrally attached to one end of the anchor bolt 8 and a forked portion 10 is formed on the other end.

The nut member 9 is formed with a female screw portion 9 a to which the screw portion 4 of the support member 1 is screwed, and the inner diameter of the female screw portion 9 a is the diameter of the tubular portion 2 of the support member 1. The threaded portion 9a and the threaded portion 4 are tightly screwed together, and the thread troughs of the threaded portion 9a are completely filled.

Further, reference numeral 11 shown in FIG. 3 indicates a support pin, and a screw portion 12 for screwing and fixing the support pin 11 is formed on one end side of the support pin 11. At the other end of the support pin 11, there is formed a support portion 13 which is inserted into the opening portion 5 of the support member 1 with dimensional accuracy, that is, the outer diameter of the support portion 13 is equal to that of the opening portion 5. The inner diameter is almost the same as the inner diameter.

Next, a method of accurately embedding the anchor bolt 8 at a predetermined position of the concrete structure using the support member 1 and the support pin 11 configured as described above will be described.

First, as shown in FIG. 4, a screw portion 12 formed on one end side of the support pin 11 is screwed into a hole preliminarily formed at a predetermined position inside the mold 14 to be fixed, The support portion 13 of the support pin 11 is attached to the inside of the mold frame 14 so as to vertically project.

Then, after inserting the tubular portion 2 of the support member 1 into the female screw portion 9a of the anchor bolt 8, the support member 1 or the anchor bolt 8 is rotated in the screwing direction of the screw portion 4 and the female screw portion 9a. Then, the screw portion 4 of the tubular portion 2 and the female screw portion 9a of the anchor bolt 8 are screwed together.

Further, by inserting the support portion 13 of the support pin 11 into the opening 5 of the support member 1 and allowing the support member 1 to be supported by the support pin 11, the anchor bolt 8 is placed inside the mold 14. Accurately support it in place.

As described above, since the threaded portion 4 formed on the tubular portion 2 and the female threaded portion 9 a of the anchor bolt 8 are screwed together, the screw valley 15 in the female threaded portion 9 a of the anchor bolt 8 is filled. In this state, even if concrete is poured into the formwork 14 to fill it, so-called concrete slag can be prevented from entering the female screw portion 9a of the anchor bolt 8.

Next, concrete is poured into the formwork 14 to fill the formwork, and the formwork 14 is removed after the concrete is sufficiently dried. When the formwork 14 is removed, the support pins 11 and the support pins 11 are opened from the openings 5 of the support member 1. The detached and supported member 1 is maintained in a state of being screwed to the female screw portion 9 a of the anchor bolt 8.

In this state, the support member 1 has a role of a dustproof cap that prevents dust and the like from entering the female screw portion 9a of the anchor bolt 8 and is connected to an external connecting bolt or the like. It may be left in a state of being screwed to the female screw portion 9a of the anchor bolt 8 as it is.

When it is necessary to connect an external connecting bolt or the like, the tip of a jig such as a screwdriver is fitted into the groove portions 7 of the support member 1 and rotated in the direction opposite to the screwing direction of the screw portion 4. It may be pulled out from the female screw portion 9a of the anchor bolt 8. By doing so, the anchor bolt 8 is accurately embedded in the predetermined position of the concrete structure 16 and attached.

Next, a second embodiment of the present invention is shown in FIG. The second embodiment is different in the shape of the grooves 7, 7 formed in the flange portion 3 of the support member 1, and since the other structure is the same as that of the first embodiment described above, its details are omitted. .

That is, on the flange portion 3a of the support member 1a, as the groove portion into which a jig such as a driver is fitted, a short groove portion 7a, 7a, or further 7b, 7b is formed to form a positive groove portion. When removing the support member 1a from the female screw portion of the anchor bolt, fit the tip of a jig such as a screwdriver into the groove portion 7a, 7a or 7b, 7b, and set the screwing direction of the screw portion. By rotating it in the opposite direction, it can be easily pulled out from the anchor bolt menu.

[0029]

[Effect of device]

 As described above, the support member for the concrete insert metal fitting according to the present invention is a support member that is inserted into the female thread portion of the concrete insert metal fitting and supports the concrete insert metal fitting inside the formwork. , A cylindrical part with one end open and the other end closed, forming a ring-shaped flange along the outer peripheral edge of the opening on the one end of the cylindrical part, and adhering to the flange with a concrete insert metal fitting. With the configuration that the threaded portion that is screwed into the female threaded portion of is formed in the tubular portion, the threaded portion formed in the tubular portion and the female threaded portion of the concrete insert metal fitting are screwed together, and The thread troughs in the female thread section will be filled, and even if concrete is poured into the inside of the formwork and filled, the female of the concrete insert metal fittings will be filled. For di unit, it is possible to prevent intrusion of slag so-called concrete, not necessary work to remove the slag, exhibits the excellent effect that as possible is possible to improve the workability.

Further, by providing the flange portion with a groove portion into which the jig for attachment / detachment is engaged, the tip of the jig such as a screwdriver is engaged with the groove portion to rotate the support member so that the female screw of the anchor bolt is fixed. Since it can be easily pulled out from the part, it has an excellent effect that workability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a support member according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a supporting member of the same embodiment.

FIG. 3 is an explanatory view showing a concrete insert metal fitting and a support pin using the support member of the embodiment in a disassembled state.

FIG. 4 is a cross-sectional view showing a state where a concrete insert fitting is embedded in a concrete structure using the supporting member of the embodiment.

FIG. 5 is a front view of a support member of a second embodiment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support member 1a Support member 2 Cylindrical part 3 Flange part 3a Flange part 4 Screw part 5 Opening part 5a Opening part 6 Closing part 7, 7 Groove part 7a, 7a Groove part 7b, 7b Groove part 8 Anchor bolt 9 Nut member 9a Female screw part 10 Bifurcated part 11 Support pin 12 Screw part 13 Support part 14 Formwork 15 Screw thread 16 Concrete structure

Claims (2)

[Scope of utility model registration request] 1. A support member that is inserted into a female screw portion of a concrete insert metal fitting and supports the concrete insert metal fitting inside a mold, the support member having a cylindrical portion with one end open and the other end closed. And forming a ring-shaped flange portion along the outer peripheral edge of the opening on the one end side of the tubular portion, and a screw portion adjacent to the flange portion and screwed into the female screw portion of the concrete insert metal fitting. A support member for a concrete insert fitting, which is characterized in that 2. The support member for a concrete insert fitting according to claim 1, wherein the flange portion is provided with a groove portion into which a jig for attachment and detachment is engaged.