JP2005344841A - Sleeve connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily connect a sleeve embedded in a concrete structure to an extension sleeve. <P>SOLUTION: This connector 1 is integrally constituted of a first ring part 2 fitted to and inserted into the sleeve on the concrete structure side, a flange part 3 continuously arranged in this part, and a second ring part 4 continuously arranged in the flange part 3 and fitted to and inserted into the extension sleeve. The first ring part 2 is thinly formed to be cuttable by scissors, and is fitted to and inserted into the sleeve in a state of forming a notch in the first ring part 2 by the scissors when the concrete structure side sleeve is deformed, and is constituted so that the first ring part 2 follows deformation of the sleeve. Since both the first ring part 2 and the respective sleeves are fixed by an adhesive, these ring parts 2 and 4 have sufficient high connection strength even if the parts are thin. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to another sleeve for extension with respect to a sleeve embedded in a concrete structure part constituting a wall part or a floor part of a concrete structure, and a connector for connecting a member on the indoor side.

  In concrete structures such as apartments, condominiums, and office buildings, the structure is constructed against concrete structures such as walls and floors in order to ensure external ventilation, power cords for air conditioners, and installation of drain pipes. There are not a few sleeves that are embedded in the interior and exterior of the space.

  In FIG. 7, the sleeve 20 embedded in the structure portion 21 of the concrete structure needs to be arranged so that the end portion of the sleeve 20 abuts against a panel for forming a concrete placement space when the concrete is placed. Therefore, the edge 20 a of the sleeve 20 is located on the same plane as the end surface 21 a of the concrete structure portion 21.

  Here, the width from the end surface 21a of the concrete structure portion 21 to the wall portion on the indoor side tends to increase from the viewpoint of improving the living environment. For example, in order to improve the heat insulation and soundproofing properties of a specific section or room, the width becomes extremely large by arranging a large amount of heat insulating materials and soundproofing materials.

  As a method for enabling connection between the sleeve and the indoor member in such a state, a ring-shaped connecting body called an extension ring is used, one end of which is fitted into the sleeve 20 side, and the other end is connected, for example, Conventionally, a method of connecting the sleeve 20 and a member on the indoor side by connecting to a connection ring portion of the indoor member such as a ventilation port has been practiced.

  However, recently, due to an increase in the filling amount of soundproofing materials and heat insulating materials for implementing further soundproofing or heat insulation, or an increase in the number of pipes or cables installed between the concrete structure and the indoor wall, For this reason, there is a tendency that the width (distance) between the concrete structure portion and the indoor wall tends to be further increased, and even if the connecting ring is used, the indoor side cannot be connected to the sleeve.

  Further, the sleeve 20 shown in FIG. 7 is not rarely deformed in its cross-sectional shape due to the weight of cement injected at the time of placing concrete or the impact of concrete injected by dropping. Since such a deformation is fixed together with the solidification of the cement, there are few cases where the connection ring having a true circular cross section cannot be inserted into the deformed sleeve even if the connection ring has a sufficient width. Has occurred.

For this reason, at the construction site, a method of connecting the extension sleeve 22 to the sleeve 21 embedded in the concrete structure portion 21 is often performed rather than a kind of emergency treatment as shown in FIG.
That is, a plastic plate material or metal plate material that can be rounded into a cylindrical shape as indicated by reference numeral 23 is rounded into a cylindrical shape as indicated by reference numeral 23a, and an adhesive is applied around the cylindrical shape, and the sleeve 20 and the extension sleeve. Both sleeves 20 and 22 are connected so as to bridge both of them, and the indoor member is connected to the extension sleeve 22 directly to the extension sleeve 22 or indirectly through the connection ring.

  According to this method, even if the sleeve 20 embedded in the concrete structure portion 21 is deformed, the rolled connection body conforms to the inner surface of the sleeve 20 deformed by its own restoring force. Can be connected.

  However, since the connecting body 23a is an emergency construction made of a plate-like material, its strength as a connecting body is not sufficiently guaranteed, and if there is no such material at hand, the connection itself Is impossible.

Although there is no preceding example of the connecting member configured in view of the above points, there is a structure that can cope with the case where the width of the concrete structure portion and the indoor wall is increased by making the connecting ring extendable and contractible. It is shown in the following literature. However, in this structure, cement is infiltrated into the sliding portion when the concrete is placed, and there is a possibility that the expansion and contraction becomes difficult after the concrete is placed or the expansion and contraction operation itself is impossible. In addition, the distance of expansion and contraction is naturally limited, so that when the limit value is exceeded, it is necessary to use a longer extension sleeve.
JP-A-5-195620

  When connecting the concrete structure and the interior wall, if the width of the concrete structure and the interior wall is so large that the connecting ring cannot be used, the sleeve on the concrete structure side is conventionally bent by bending the plate. However, since this is a kind of emergency treatment, there may be a problem in connection strength, and in the absence of such a material, the connection itself cannot be made.

The present invention is configured to solve the above problems.
That is, the present invention relates to a first ring portion that is inserted into a sleeve on the concrete structure side, a flange portion that has a larger diameter than the ring portion, and a second ring that is connected to the flange portion and is inserted into the connection sleeve. And at least the first ring portion has a strength sufficient to connect the two sleeves and a sleeve on the concrete structure side whose sectional shape is deformed. It is a connecting tool characterized by having a deformability that can be inserted or having a wall thickness that can be cut with a cutting tool such as a scissors in the field.

  A part previously formed as a sleeve connector is cut off at the construction site, or the diameter of the entire connector is reduced by using a pre-formed cutting portion and is inserted into the sleeve. This makes it possible to easily insert into a sleeve whose cross-sectional shape is changing on the concrete structure side, and it is possible to connect variously deformed sleeves using one type of connector at the construction site. .

  When the connecting tool is made of, for example, vinyl chloride and the outer diameters of the first and second ring portions are, for example, 75 mm, the thickness of these ring portions is 1 mm, and sufficient connection strength can be obtained. In addition, vinyl chloride with a thickness of 1 mm can be cut with ordinary scissors, can be easily adjusted in the field, and another sleeve is connected to the sleeve embedded in the concrete structure with sufficient strength. Can do.

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention.
An arrow 1 in the figure indicates the whole connector. This connecting tool 1 is connected to a first ring portion 2 fitted into a sleeve (hereinafter referred to as “structure portion side sleeve”) 20 embedded in the concrete structure portion 21 of FIG. And it is comprised from the flange part 3 whose outer diameter is larger than the 1st ring part 2, and the 2nd ring part 4 connected with this flange part 3. As shown in FIG. In other words, the integral ring portion is divided into the first ring portion 2 and the second ring portion 4 by the flange portion 3.

The connector 1 is integrally formed of a material such as vinyl chloride.
When the diameters of the first ring portion 2 and the second ring portion 4 are, for example, 73 mm, the connector 1 is formed to be thin with a thickness T of about 1 mm (see FIG. 2).

  When connecting the structure-side sleeve 20 and the extension sleeve 22 (see FIG. 7) using the connection tool 1 having this configuration, if the cross-sectional shape of the structure-side sleeve 20 is deformed, as shown in FIG. The first ring part 2 is cut in the axial direction of the ring with respect to the first ring part 2 using a cutting means such as a scissors 10 and an adhesive is applied to the outer peripheral surface of the first ring part 2. 2 is inserted into the structure side sleeve 20. Since the first ring portion 2 is notched, when the first ring portion 2 is inserted into the structure-side sleeve 20, the first ring portion 2 is deformed by its own deformability and resilience. It adheres to the inner surface of 20. On the other hand, an adhesive is also applied to the outer peripheral portion of the second ring portion 4, fitted into the extension sleeve 22, and both sleeves are connected via the flange portion 3.

  In this connection, when a cut is made in the first ring portion 2, the strength of the first ring portion 2 itself is slightly lowered, but the first ring portion 2 is fixed to the structural portion side sleeve 20 with an adhesive and is attached to the structural portion side sleeve 20. Because of the structural integration, the thickness T of the first ring portion 2 can be easily cut by a cutting means such as a scissors 5, but the support strength as a connector can be kept sufficiently high. It becomes. Further, since the thick flange portion 3 is formed, the strength of the entire connecting device 1 is guaranteed even before use.

  In FIGS. 3 and 4, reference numeral 5 denotes a reinforcing portion projecting in the axial direction of the connector 1 on the inner peripheral surface of the first ring portion 2 and the second ring portion 4. Moreover, the thickness of each ring part 2 and 4 other than the formation part of the reinforcement part 5 is formed in the same thin wall as the said Example, and it is formed so that it can be easily cut | disconnected with a scissors etc. FIG.

  In the present embodiment, the strength of the entire connecting device 1 is increased by forming the reinforcing portion 5, and the thickness of the first ring portion 2 other than the forming portion of the reinforcing portion 5 is formed thin as in the case of the first embodiment. Therefore, the connection strength of the sleeve can be further increased while the workability such as the cutting of the first ring portion 2 is maintained well.

  Reference numeral 6 in the drawing is a notch formed in advance in the axial direction of the connector 1 with respect to the first ring portion 2, and a plurality of notches are formed in the circumferential direction of the first ring portion 2 so as to be parallel to each other. . When connecting the sleeve, after applying an adhesive to the outer peripheral wall of the first ring portion 2, the first ring portion 2 is fitted into the structure portion side sleeve 20. Since the notch 6 is formed in the first ring portion 2 in advance, even if the structure-side sleeve 20 is deformed, the entire first ring portion 2 follows the deformation and is firmly connected to the structure-side sleeve 20. Connect to.

  If a plurality of cuts are formed as shown in the figure, the followability to the deformation of the structure side sleeve 20 is enhanced, so that the thickness of the first ring portion 2 is slightly increased to increase the strength of the entire connecting device 1. It can also be configured.

In the drawing, reference numeral 7 denotes an open portion in which the first ring portion 2, the flange portion 3, and the second ring portion 4 communicate with each other in the axial direction of the connection tool 1 and the entire connection tool 1 is cut. The outer diameter D of the first ring portion 2 and the second ring portion 4 is formed in advance larger than the inner diameters of the structure-side sleeve 20 and the extension sleeve 22 to be connected, and the first ring portion 2 is formed on each of these sleeves. And when inserting the 2nd ring part 4, it inserts so that this open part 7 may be narrowed.

  By inserting the ring portions 2 and 4 as described above, the ring portions 2 and 4 are brought into contact with the inner surfaces of the sleeves by their elastic force. When the structure side sleeve 20 is deformed, in addition to this elastic force, the first ring portion 2 is deformed following the deformation by the deformability (flexibility) of the first ring portion 2. Close contact with the inner peripheral surface. If the elastic force is set to be large, it is not impossible to connect the sleeve without using an adhesive. However, in consideration of safety, the connection is made using an adhesive as in the previous embodiments. It is reasonable to do.

  As in the embodiment, in addition to connecting the sleeve embedded in the concrete structure and the other sleeve, for example, the first ring portion 2 is connected to the sleeve embedded in the concrete structure, and the other second ring portion. 4 can also be configured to be directly connected to an indoor member such as a ventilation port, an air conditioner cable, a drain pipe insertion hole or the like.

  Furthermore, the present invention can also be used when one of the sleeves is deformed due to another reason such as thermal deformation regardless of the concrete structure.

It is a perspective view of the connection tool which shows the 1st example of the present invention. It is sectional drawing by the AA line of FIG. It is a perspective view of the connection tool which shows the 2nd example of the present invention. It is sectional drawing by the BB line of FIG. It is a perspective view of the connection tool which shows the 3rd example of the present invention. It is a perspective view of the connection tool which shows the 4th example of the present invention. It is a figure which shows the connection state of the sleeve by the conventional method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection tool 2 1st ring part 3 Flange part 4 2nd ring part 5 Reinforcement part 6 Notch 7 Opening part 10 鋏 (cutting tool)
20 Concrete structure side sleeve 21 Concrete structure 22 Extension sleeve

Claims (5)

A connector for connecting a sleeve requiring connection extension, such as a sleeve embedded in a concrete structure, and an extension sleeve for extending the sleeve, to the sleeve requiring connection extension. A first ring portion that is inserted into the first ring portion, a flange portion that is continuous with the first ring portion, and a second ring portion that is continuous with the flange portion and is inserted into the extension sleeve. The first ring part is configured so that it can be cut with a cutting tool such as a scissors, and the first ring part can be inserted into the sleeve even if the cross-sectional shape of the sleeve requiring connection extension is deformed. A connecting device characterized by the above. The one or more reinforcing parts project from the inner peripheral part of at least the first ring part among the first ring part and the second ring part in the ring axial direction. The connection tool according to 1. A connector for connecting a sleeve requiring connection extension, such as a sleeve embedded in a concrete structure, and an extension sleeve for extending the sleeve, to the sleeve requiring connection extension. A first ring portion that is inserted into the first ring portion, a flange portion that is continuous with the first ring portion, and a second ring portion that is continuous with the flange portion and is inserted into the extension sleeve. The portion is formed with one or more cuts in the axial direction, and the first ring portion can be inserted into the sleeve even if the cross-sectional shape of the sleeve requiring connection extension is deformed. Features a connector. The connecting device according to claim 3, wherein the first ring portion, the flange portion, and the second ring portion communicate with each other, and an open portion is formed in the connecting device axial direction. The connecting tool according to claim 4, wherein the outer diameters of the first ring part and the second ring part are formed larger than the inner diameter of the sleeve to be inserted.

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