JPH0237343Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to an insertion tool for a double reciprocating pipe for heating and cooling, which is used for inserting a connecting pipe for heating and cooling formed by a double reciprocating pipe into a guide conduit such as a sheath pipe.

[Conventional technology]

The plastic connecting pipes connected to indoor radiators and coolers are formed as two reciprocating pipes in which heating and cooling fluid supply pipes and return pipes are connected side by side.
When constructing this connecting piping, in response to the longer lifespan of buildings these days, it is possible to use conduits such as sheath pipes or electric wire laying pipes that are installed in advance at the time of construction, or to use conduits for connecting piping. Consideration is being given to adopting a construction method in which connecting pipes can be installed separately and connecting pipes can be inserted into these pipes, making it convenient to replace or repair the connecting pipes that are likely to occur later.

[Problem that the invention attempts to solve]

The connecting pipe has a reciprocating double pipe structure in which two pipes are connected as a pair, and the pipe itself has a certain degree of rigidity, so the connecting pipe is inserted and passed through the bent pipe, leaving as small a gap as possible. The task of doing so is extremely difficult. In addition, although it is not possible to use a pipe with a large diameter due to space constraints, it is a good idea to use a pipe with a diameter as large as possible for the connecting pipe that runs through it. However, if the inner diameter of the pipe and the outer diameter of the connecting pipe are too close, the tip end of the connecting pipe tends to get caught on the inner wall of the pipe, which is usually formed into an annular uneven surface, during insertion work. There is a problem that the insertion work cannot be done smoothly.

[Means to solve the problem]

This invention solves the above problems, and
The purpose is to create an insertion tool that can be easily attached to and removed from the mouth of a double reciprocating pipe, and that allows for extremely smooth insertion by pushing the double reciprocating pipe without creating resistance between the pipe and the pipe. It is about providing. The above-mentioned object of the present invention is to form the head into a nearly warhead shape, and this head has a bottom part that has an outline that is almost the same as the mouth part of a reciprocating double pipe made by connecting two pipes in parallel. This is accomplished by an insertion tool for a double reciprocating pipe for heating and cooling, which has two legs protruding from the bottom surface that can be inserted into the two pipes, respectively.

【Example】

Embodiments of the present invention will be described below with reference to the accompanying drawings. The head 1 is made of cast metal, brass cutting, or hard plastic, and its outer shape is approximately the shape of a warhead, and the bottom surface 2 is formed to have approximately the same outer shape as the mouth surface of a double reciprocating pipe, which will be described later. This bottom part 2 has 2 parts that can be freely inserted into each pipe of the double reciprocating pipe.
The legs 3, 3 of the book are provided protrudingly. Note that the top portion 1a of the head body 1 is chamfered and formed into a flat surface. The reciprocating double pipe generally designated by the symbol 11 is the third
As shown in the figure, two pipes 11a, 11a with a circular cross-sectional shape and the same diameter are placed vertically against each other, and a binding tape 12 such as aluminum tape is wrapped around the pipes, and both pipes 11a are made of plastic. One pipe 11 is a flexible pipe of
a functions as a heating and cooling fluid supply pipe, and the other pipe 11a functions as a return pipe,
It constitutes a so-called communication pipe. Next, to show the dimensions of the head body 1 and legs 3 with respect to the reciprocating double pipe 11, in FIGS. 1 and 2, l ₁ = outer diameter of pipe 11a x 2, l ₂ = pipe 11a
l ₃ = the inner diameter of the pipe 11a, for example, l ₁ = 20 mm, l ₂ = 10 mm, l ₃ = 7 mm,
On the other hand, the height of the head body 1 (for example, 9 mm) and the length of the legs 3 (for example, 20 mm) are selected at any time.

[Effect]

According to the above configuration, the present insertion device has two legs 3,
3 can be used to insert the double reciprocating pipe into a double reciprocating pipe, and even if the outer diameter of the double reciprocating pipe is close to the inner diameter of the conduit, this insertion tool allows the double reciprocating pipe to be inserted smoothly. can be inserted into the conduit.

[Effect of the idea]

The present invention is as described above, and since the head of the present insertion tool is shaped like a warhead and the maximum width part (bottom part) is formed to be almost the same as the outer shape of the opening of the reciprocating double pipe, it is possible to This insertion tool functions as a guide member when pushing the connecting pipe into the pipe, and allows the reciprocating double pipe to be inserted smoothly without creating resistance between the pipe and the pipe. Furthermore, if this insertion tool is inserted into the double reciprocating pipe until the final connection work of the double reciprocating pipe is completed, the inconvenience of foreign objects entering the double reciprocating pipe can be completely prevented. The above advantages, together with the fact that it is easy to attach and detach, have extremely great practical value.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG. 3 is a partially cutaway front view of the device in use. In the figure, 1 is a head body, 2 is a bottom part, 3 is a leg, 11 is a reciprocating double pipe, and 11a is a pipe.

Claims (1)

[Scope of utility model registration request] The head body is formed almost in the shape of a warhead, and this head body is provided with a bottom part that has almost the same external shape as the mouth part of a reciprocating double pipe made by joining two pipes in parallel, and this bottom part has the above-mentioned two An insertion tool for a double reciprocating pipe for heating and cooling, characterized by having two legs protruding from each other that can be freely inserted into a main pipe.