JP2001214532A - Insert apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insert apparatus such that when an insert body and a sleeve are used integrally with each other, they can be easily and firmly connected together. SOLUTION: A joint collar 7 for connecting the insert body 1 to the sleeve 2 has an insert side mating part 7a thicker than a sleeve side mating part 7b. Projections 8 and 9 are formed at the respective ends of the insert side mating part 7a and the sleeve side mating part 7b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic insert used, for example, to be embedded in a concrete structure or the like.

[0002]

2. Description of the Related Art Conventionally, in a concrete structure, a ceramic insert is buried in the interior of the concrete structure, and bolts are fastened to the insert, so that various constituent members can be converted into the concrete structure through the bolts. Installation has been done.

As this type of ceramic insert device, there are cases where the insert device and a cylindrical sleeve are used integrally. The sleeve is coaxially arranged with the insert device, and forms an insertion hole for a bolt to be screwed into the bolt hole.

[0004]

In the conventional insert device as described above, when the insert device and the sleeve are set on a mold, it is necessary to connect the insert device and the sleeve. A structure that can be easily and reliably performed is always desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides an insert device which can easily and reliably connect an insert body and a sleeve when they are used integrally. As an issue.

[0006]

The invention according to claim 1 is
A ceramic insert body embedded in the structure and having a bolt hole formed at the center thereof; a sleeve coaxially disposed with the insert body to form a bolt insertion hole to be screwed into the bolt hole; A sleeve and a cylindrical joint collar for joining the insert body, wherein the joint collar is formed of a material having elasticity, and an insert-side fitting portion that fits into the insert body is provided on the sleeve. It is characterized in that it is thicker than the fitting part on the sleeve side to be fitted, and furthermore, a ridge continuous in the circumferential direction is formed on the outer peripheral surface at the end of the fitting part on the insert side.

[0007] By making the insert-side fitting portion thick and further forming a ridge on the outer peripheral surface, it is possible to secure the fitting when the insert-side fitting portion is inserted into the insert body. it can.

According to a second aspect of the present invention, in the insert device according to the first aspect, a ridge is formed on an outer peripheral surface of an end portion of the sleeve-side fitting portion of the joint collar, and an inner peripheral surface of the sleeve is provided. Further, an engaging groove or an engaging step corresponding to the ridge is formed.

A protrusion is formed on the outer peripheral surface of the sleeve side fitting portion, and a groove or a step is formed on the inner peripheral surface of the sleeve, so that the joint between the sleeve and the joint collar is reliably performed.

[0010] The invention according to claim 3 is the invention according to claim 1 or 2.
The insert device according to claim 1, wherein a step portion or a tapered portion is formed on an inner peripheral surface of the joint collar so that an inner diameter of the insert-side fitting portion is smaller than an inner diameter of the sleeve-side fitting portion. It is characterized by having.

By forming a step portion or a tapered portion on the inner peripheral surface of the joint collar, it is possible to reliably guide around the tip of the bolt.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an insert device according to the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes an insert main body, and 2 denotes a sleeve which is used by being arranged coaxially with the insert main body 1.

As shown in FIG. 2, this insert body 1
Is formed of ceramic, and has a bolt hole 3 formed along the central axis from the front end 1a to the rear end 1b (see FIG. 1). In the tip side 1a of the insert main body 1, an introduction portion 4 having an inner diameter larger than the outer diameter of the bolt screwed into the bolt hole 3 is formed in a portion having a predetermined length from the tip side 1a.

As shown in FIG. 1, a closing portion 5 is formed on the rear end side 1b of the insert body 1. Thereby, the bolt hole 3 viewed in FIG. 2 does not penetrate the rear end side 1b of the insert main body 1 and has a bottomed shape.
The closing portion 5 is integrally formed of the same material as the insert body 1, that is, ceramic.

As shown in FIG. 2, the sleeve 2 is made of ceramic like the insert body 1,
Is formed in a cylindrical shape having an outer diameter substantially the same as the outer diameter of the tip side 1a, and an insertion hole 2a for inserting a bolt to be screwed into the bolt hole 3 is formed therein.

The insert body 1 and the sleeve 2 are connected via a joint collar 7.

The joint collar 7 has a substantially cylindrical shape as a whole, and is formed of a material having flexibility and elasticity, such as resin and hard rubber. This joint color 7
It has an insert-side fitting portion 7a that fits into the introduction portion 4 of the insert body 1, and a sleeve-side fitting portion 7b that fits into the inner peripheral surface of the insertion hole 2a of the sleeve 2. Here, the insert side fitting portion 7a of the joint collar 7 is thicker than the sleeve side fitting portion 7b.

Further, at the end of the insert side fitting portion 7a, a ridge 8 which is continuous in the circumferential direction is formed on the outer peripheral surface.
This part is thicker than the other parts. On the other hand, a ridge 9 which is continuous in the circumferential direction is also formed on the outer peripheral surface of the end of the sleeve side fitting portion 7b.

The inner peripheral surface of the joint collar 7 has an insert-side fitting portion 7 with respect to the inner diameter of the sleeve-side fitting portion 7b.
a has a small inner diameter, which allows the joint collar 7
A step portion 10 is formed at an intermediate portion of the inner peripheral surface.

Further, on the outer peripheral surface of the joint collar 7,
A flange portion 11 extending outward is formed at an intermediate position between the insert side fitting portion 7a and the sleeve side fitting portion 7b.

On the other hand, the inner diameter of the introduction portion 4 of the insert body 1 is set smaller than the outer diameter of the insert side fitting portion 7a of the joint collar 7 by a predetermined dimension. As a result, the insert body 1 and the insert-side fitting portion 7a of the joint collar 7 are in a tight fit state, and the insert-side fitting portion 7a is fitted in a state of being compressed toward the inner peripheral side. , Joint color 7 by the repulsion
The insert force between the insert and the insert body 1 is increased, and particularly at the end protruding portion 8, a higher engagement force is exhibited.

An engagement groove 12 is formed on the inner peripheral surface of the sleeve 2 at a position corresponding to the ridge 9 with the flange portion 11 of the joint collar 7 pressed against the end of the sleeve 2. The ridge 9 fits into the engagement groove 12. Thereby, the fitting between the joint collar 7 and the sleeve 2 is ensured.

When the insert body 1 as described above is installed on a concrete structure, the insert body 1
And a cylindrical sleeve 2 formed of a resin or ceramic material are integrally connected by a joint collar 7. Then, the mounting bolts inserted through the holes formed in the mold are inserted into the sleeve 2, and the leading ends thereof are screwed into the bolt holes 3 of the insert body 1, whereby the sleeve 2 and the insert body 1 are connected to the mold. To the inner surface side.

Then, in this state, concrete is poured into the inside of the formwork, hardened and cured, and thereafter, the fastening by the mounting bolt is loosened, the bolt is pulled out, and the formwork is removed.

As a result, the insert body 1 and the sleeve 2 are buried in the concrete structure, and the end of the sleeve 2 is exposed on the surface of the concrete structure. A bolt is screwed into the bolt hole 3 of the insert body 1 from 2a, and various components are attached to the concrete structure using the bolt.

According to the insert device provided with the joint collar 7 as described above, the insert-side fitting portion 7a of the joint collar 7 is thicker than the sleeve-side fitting portion 7b, and moreover, the insert-side fitting portion 7a Since the protrusions 8 and 9 are formed at the end of the sleeve-side fitting portion 7b, the fitting of the sleeve 2 and the insert body 1 is ensured. . In addition, since the joint collar 7 is made of resin, it is flexibly deformed at the time of insertion or the like, so that the work of connecting the insert body 1 and the sleeve 2 can be easily performed.

Further, a step 10 is formed on the inner peripheral surface of the joint collar 7, and the inner diameter of the insert side fitting portion 7a is smaller than the inner diameter of the sleeve side fitting portion 7b. The bolt to be inserted can be guided to the center, and can be easily screwed into the bolt hole 3 of the insert body 1.

In the above embodiment, the shape of the joint collar 7 has been described in detail. However, unless departing from the gist of the present invention, for example, the positions of the ridges 8, 9, the flange 11, the engagement groove 12, etc. The configuration of each part of the joint collar 7 such as the shape or the presence / absence can be changed as appropriate. More specifically, for example, the step portion 10 may be formed in a tapered shape. Further, for example, instead of the engagement groove 12, an engagement step portion with which the protrusion 9 engages may be formed on the inner peripheral surface of the sleeve 2.

Also, other configurations can be adopted for the insert device 1 and the sleeve 2. For example, although the insert device 1 has a bottomed shape with the closing portion 5, the closing portion 5 may be omitted and the bolt hole 3 may be penetrated.

In the above embodiment, the sleeve 2 has a normal cylindrical shape. However, as shown in FIG. 3 (a), the outer peripheral surface 15 extends from the front end 2b to the rear end 2c. As shown in FIG.
As shown in FIG. 3B, a groove 16 continuous in the circumferential direction is formed on the outer peripheral surface of the sleeve 2, or a groove 17 continuous spirally on the outer peripheral surface of the sleeve 2 as shown in FIG.
Can be formed. In such a sleeve 2, the outer peripheral surface 15 on the taper, the groove 1
6 and 17, it is possible to increase the fixing force to the concrete cast outside of the sleeve 2, and to prevent the sleeve 2 from falling off even after the concrete has hardened and contracted.

Other than this, any configuration may be adopted as long as it does not depart from the gist of the present invention, and it is needless to say that the above-described configurations may be selectively combined as appropriate. No.

[0032]

As described above, according to the insert device according to the first aspect, the insert-side fitting portion is made thick by forming the insert-side fitting portion to be thick and further forming a ridge on the outer peripheral surface. When connecting the joining portions, the fitting is performed securely. Moreover, the joint collar is formed of an elastic material such as resin, for example, so that it can be flexibly deformed at the time of insertion or the like, thereby facilitating the connection operation between the insert body and the sleeve.

According to the insert device of the second aspect,
A protrusion is formed on the outer peripheral surface of the sleeve-side fitting portion, and an engaging groove or an engaging step is formed on the inner peripheral surface of the sleeve, so that the joint between the sleeve and the joint collar is reliably performed. Can surely be prevented from falling off.

According to the insert device of the third aspect,
By forming a stepped portion or a tapered portion on the inner peripheral surface of the joint collar, it is possible to reliably guide around the tip of the bolt, and it is possible to easily perform a screwing operation to the insert instrument.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of an insert device according to the present invention, and is a side view showing a state where an insert body and a sleeve are connected.

FIG. 2 is a side sectional view showing a portion where the insert body and the sleeve are connected by a joint collar.

FIG. 3 is a side view showing another example of the sleeve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insert main body 2 Sleeve 3 Bolt hole 7 Joint collar 7a Insert side fitting part 7b Sleeve side fitting part 8,9 Ridge 10 Step part 12 Engagement groove

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E125 AA76 AF01 AG20 AG41 AG60 BA04 BA33 BB09 BB19 BB28 BB29 BC06 BC09 BD04 BE01 BF04 BF08 CA78 CA95 DA03

Claims (3)

[Claims] 1. A ceramic insert body embedded in a structure and having a bolt hole formed at the center thereof, and a through hole for a bolt which is coaxially arranged with the insert body and is screwed into the bolt hole. And a cylindrical joint collar for joining the sleeve and the insert body, wherein the joint collar is formed of an elastic material and is fitted on the insert body. Is thicker than the sleeve-side fitting portion that fits into the sleeve, and furthermore, the outer peripheral surface at the end of the insert-side fitting portion has a configuration in which a circumferentially continuous ridge is formed. Features insert equipment. 2. The insert device according to claim 1, wherein a circumferentially continuous ridge is formed on an outer peripheral surface of an end portion of the sleeve-side fitting portion of the joint collar, and an inner peripheral surface of the sleeve. And an engaging groove or an engaging step corresponding to the ridge. 3. The insert device according to claim 1, wherein the inner diameter of the insert-side fitting portion is smaller on the inner peripheral surface of the joint collar than the inner diameter of the sleeve-side fitting portion. Characterized in that a stepped portion or a tapered portion is formed.