JPH0685993U - Protective tube drawer - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a protective tube pull-out tool in which the withdrawal end of the protective tube from within the slab does not interfere with the work and the post-processing work for backfilling is unnecessary. . [Structure] A connector 1 which has a tubular shape, is gently curved into an S shape, and is connected to the protective tubes 6 and 7 at both ends 10a and 10b.
1 and 12 are provided respectively, and the protection tube 6 embedded in the slab 4 is arranged at the drawer portion for drawing out the protection tube embedded in the slab 4 to the upper surface of the slab 4, and the one end 10a is embedded in the slab 4.
Further, the other end 10b projects from the upper surface of the slab 4 and is connected to the protective tube 7 outside the slab 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a protective tube pulling tool which is particularly suitable for containing and protecting hot water supply / water supply pipes and used for starting up an end portion of a sheath pipe embedded in a slab.

[0002]

[Prior art]

 Conventionally, when a protective tube such as a conduit tube or a sheath tube used to bury an electric wire, hot water supply / water supply pipe in a slab is pulled out from the slab to the upper surface of the slab, a dedicated start-up work tool may be used. is there. As this type of construction tool, for example, there is a construction shown in Japanese Utility Model Publication No. 02-31656. As shown in FIG. 1, this construction tool 1 has an opening for inserting a conduit tube 3 standing up from a slab 4 into a lower end 2a and an upper end 2b of a hollow main body 2, and a displacement of the inserted conduit tube 3 on an upper surface of the slab. It is provided with a permissible space 2c for allowing the above, and a closed portion 2d covering the upper part of the space 2c. Then, prior to the concrete pouring of the slab 4, the tip of the electric wire tube 3 embedded in the slab 4 is inserted into the main body 2 from the lower end 2a of the construction tool and projected above the upper surface of the slab 4 from the upper end 2b. Install the construction tool 1. After that, the slab 4 is poured into concrete to expose the upper end 2b and the closed portion 2d of the construction tool 1 on the upper surface of the slab 4, and the other part is embedded in the slab 4. Then, after concrete curing, the upper portion of the closed portion 2d is cut flush with the upper surface of the slab 4, the closed portion 2d is removed to open the allowable space 2c, and the electric conduit 3 is displaced in the allowable space 2c. The starting end 3a of the electric wire tube 3 is set to a predetermined position.

[0003]

[Problems to be solved by the device]

 By the way, the above-mentioned electric wire tube 3 is curved in the main body 2 of the construction tool 1 so as to rise above the slab 4 between the lower end 2a and the upper end 2b. The protection tube such as the conduit tube 3 is generally high in rigidity so as to withstand the pressure when it is embedded in the slab 4, and the rising end portion 3a of the curved conduit tube 3 is upward. Facing and protruding greatly on the slab 4. On the other hand, the rising end portion 3a of the conduit tube 3 is often left in a projecting state at the construction site until the pipe connection work is started due to the work procedure. For this reason, the projecting end 3a of the electric wire tube 3 interferes with other work and is often cut without permission, so that there is a problem that it must be repaired when the pipe connection work is started. is there.

In addition, the construction tool 1 can displace the rising end 3a of the conduit tube 3 within the allowable space 2c, but after positioning the rising end 3a, a gap is formed in the slab 4. There is a problem that a post-processing work for backfilling the allowable space 2c is required. The present invention has been made in view of the above circumstances, and an object thereof is to provide a drawer for a protective tube in which an end drawn from the inside of a slab does not interfere with work and a post-processing work for backfilling is unnecessary. And

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, a protection tube is formed in a slab, which has a tubular shape, is gently curved in an S shape, and is provided with connectors at both ends for connecting to the protection tube. Is arranged in a drawer part that draws out the slab on the upper surface, and one end is connected to a protective pipe embedded in the slab and the other end is connected to a protective pipe outside the slab so as to project from the slab upper surface. .

[0006]

[Action]

 One end of the drawer is connected to the protective tube via the connector, and this drawer is embedded in the slab together with the protective tube. At this time, the other end of the drawer is projected on the upper surface of the slab and exposed so as to be parallel to the upper surface of the slab. Then, connect a protective pipe outside the slab to the other end via a connector, and pipe from the inside of the slab to the target connecting device outside the slab via the drawer.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 2 shows a drawer for a protective pipe according to the present invention. The drawer 10 has a cylindrical shape, has the same diameter from one end 10a to the other end 10b, and has a pipe 5 such as a water supply pipe or a hot water supply pipe. It can be inserted. The drawer 10 is gently curved into a large S shape with a large curve from the opening ends 10a to 10b, and one end 10a and the other end 10b are substantially parallel to each other and are horizontal as shown in the drawing. ing. Therefore, the pull-out end portion 5a of the pipe 5 which is inserted from the one end 10a to the other end 10b can be pulled out in the opening direction of the other end 10b while slightly bending along the inner surface of the pull-out tool 10. .

A protrusion 10 d is integrally formed on the lower side of the central portion 10 c of the drawer 10 in the drawing, and a hole 10 e for fixing the drawer 10 inside the slab 4 is formed in the protrusion 10 d. Is installed throughout. The both ends 10a, 10b have a slightly smaller diameter, and the both ends 10a, 10b have a connector 11, which can be connected to the sheath pipes 6, 7 for containing and protecting the pipe 5 with one touch. 12 are provided. The drawer 10 having such a shape is formed of a synthetic resin member.

The protective tube pullout device 10 of the present invention is configured as described above and is used as follows. Prior to the concrete pouring to form the slab 4, the connector 11 at the one end 10a of the drawer 10 is fitted and connected to the end of the sheath 6 that contains the pipe 5, and the drawer 10 is shown in the drawing. It is arranged at a predetermined embedding position of the slab 4 indicated by the chain double-dashed line, and is fixed to the reinforcing bar in the slab 4 via an iron rod (both not shown) that penetrates the hole 10e of the protrusion 10d. At this time, the drawer 10 is exposed so that the other end 10b is parallel to the surface of the slab 4 with a slight gap of about 1 to 2 cm between the other end 10b and the upper surface of the slab 4. Most of the central portion 10c is arranged so as to be buried in the slab 4. To prevent the concrete flow from the connector 12 when pouring concrete, attach packing to the connector 12 to close it.

When concrete is cast to form the slab 4, the drawer 10 is buried horizontally exposed on the slab 4 in the vicinity of the open end 10 b where the connector 12 is provided. Then, the connector 12 is fitted and connected with the sheath tube 7 that contains the lead-out end 5a of the pipe. At this time, if the opening end 10b is exposed at a position slightly before the target connecting device, the degree of freedom of the piping system path can be increased. As a result, the sheath tube 7 drawn out from the slab 4 is less likely to interfere with other work because it is parallel to the surface of the slab 4.

[0011]

[Effect of device]

 As described above, according to the present invention, the protection tube embedded in the slab has a tubular shape, is gently curved into an S shape, and is provided with connectors at both ends for connecting to the protection tube. One end of the protective pipe is embedded in the protective pipe that is installed in the extension part that is pulled out to the upper surface, and the other end is connected to the protective pipe outside the slab by protruding from the upper surface of the slab. It does not significantly project above the body, and it is less likely to interfere with other work, and it is possible to prevent inadvertent cutting before piping work. In addition, post-processing work for backfilling slabs after piping work becomes unnecessary, and the connection of the withdrawal end of the protection pipe becomes easier, thus improving work efficiency.

[Brief description of drawings]

FIG. 1 is a front view of a conventional conduit tube startup construction tool.

FIG. 2 is a front view of a protective tube drawer according to the present invention.

[Explanation of symbols]

 4 Slab 5 Piping 6,7 Sheath pipe 10 Drawer 11,12 Connector

Claims (1)

[Scope of utility model registration request] 1. A tubular shape, gently curved into an S-shape,
A connector for connecting with a protective tube is provided at each end, and the protective tube embedded in the slab is arranged in a drawer portion that draws out to the upper surface of the slab, and one end of the protective tube is embedded in the slab. A drawer for a protective tube, the end of which is projected from the upper surface of the slab and is connected to the protective tube outside the slab.