JPH0425596Y2 - - Google Patents

Description

[Detailed description of the invention] <Field of industrial application> This invention is a water supply pipe facing laboratory animal cages, etc., for supplying drinking water to cages arranged on cage shelves housing small laboratory animals such as rats and mice. The present invention relates to a branching device.

<Prior Art> Recently, an automatic water supply system has become mainstream for supplying water to groups of cages arranged on cage shelves (frames) of this type that are commonly used. In this case, the piping can be installed, for example, by attaching the water supply nozzle via a hose to an integral branch pipe protruding from the horizontal pipe of the piping for each shelf on the back of the shelf, or by directly attaching the water supply nozzle with a screw. It's like that. That is, the eighth
As shown in the figure, a branch pipe B is fixed to a branch hole a drilled in the side surface of a square pipe A by welding c, and a connecting hose D is inserted into this branch pipe B. There is a type, such as that disclosed in Japanese Patent No. 51-149084, in which a branch hole a of a round pipe A' is threaded b, and a base E serving as a branch pipe is directly screwed into this.

<Problems to be solved by the invention> However, in the case of the former, welding work must be performed at each branch position, making processing and manufacturing cumbersome.
Moreover, the disadvantage of this integrated branching structure is that the branching portion becomes a nuisance, making cleaning and sterilization difficult. In addition, in the case of the latter, it can be divided freely by screwing, making cleaning etc. easy, but when directly screwing the branch pipe B, the wall thickness of the water supply pipe (pipe) itself must be increased. It cannot be cut and processed unless the pipe diameter is large, and expensive piping is unavoidable.

In view of the above circumstances, it is an object of the present invention to provide a branching device for water supply piping facing a cage for laboratory animals, etc., which uses a thin-walled pipe and can be configured to have a branch pipe that can be freely attached and detached.

<Means for solving the problem> The present invention involves drilling a round hole for branching in the side surface of a round water supply pipe at a predetermined position, and inserting a water supply pipe with approximately the diameter of the water supply pipe through the round hole orthogonally to the base end of the branch pipe. The locking shaft formed at the proximal end of the tightening piece, which is screwed into the shaft hole of this branch pipe from the distal side, is connected to the outer surface of the water supply pipe and the piece of the tightening piece. It is inserted into the round hole with packing interposed between the stepped portions, and the proximal end face of a water supply valve screwed into the shaft hole of the branch pipe is brought into contact with the end face of this tightening piece.

<Function> Due to the above-mentioned configuration, for the branch piping, the branch pipes corresponding to the number of round holes for branching are fitted into this water supply pipe from one end, and the branch pipes are slid to the predetermined round hole position,
Align the shaft hole in the center of the branch pipe and the clamping body screwed into the shaft hole with the round hole, and in this state screw the clamping piece and insert the locking shaft into the round hole. For example, the packing fitted to the base of the tightening piece is strongly pressed against the edge of the round hole, allowing for leak-free branching. A water supply valve may be directly screwed onto the branch pipe end fixed to the water supply pipe, or a hose attachment may be attached. Of course, if you want to branch the water supply pipe to both sides, use a water supply pipe with round holes on both sides, a branch pipe with tightening pieces at both ends, and a branch shaft hole in the center. When combined, it becomes a double-ended type.

<Example> Hereinafter, the present invention will be described in detail based on the drawings of the example.

Figures 1 to 3 show an embodiment in which a branch pipe is arranged only on one side. Reference numeral 1 is a round pipe type water supply pipe made of stainless steel, and a branch pipe is attached on one side of a predetermined location of the water supply pipe 1. Hole 2 is drilled. 3 is a branch pipe with a bottom frame 5 having a diameter larger than that of the water supply pipe 1 which passes orthogonally through a branch shaft hole 4 having approximately the same diameter as the water supply pipe diameter at the base end;
The branch pipe 3 has a female threaded part 6 carved in the central shaft hole 3a surface, and a male threaded part 9 of a tightening piece 8 having a communication hole 7 in the center is screwed together. It has a structure in which a ring-shaped packing 11 made of rubber or the like is fitted into a locking shaft portion 10 having approximately the same diameter as the round hole formed at the tip. This branch pipe 3 is installed orthogonally to the water supply pipe 1 to form a branching device 12 for the water supply pipe.

To explain this effect now, first of all, when assembling the branch pipe 3 to the water supply pipe 1, the interval between the round holes 2 for branching arranged in the water supply pipe 1 is determined by the distance between the cages 14 arranged on the shelf 13a of the cage shelf 13 shown in FIG. 4, for example. It depends on the group distance.

At this point, from one end of the water supply pipe 1 to the round hole 2
The number of branch pipes 3 corresponding to the number of pipes 3 are fitted. That is, the branch shaft hole 4, which can be tightly fitted to the water supply pipe 1 disposed at the base end of the branch pipe 3, is inserted from one end of the water supply pipe 1 and slid to the predetermined position of the round hole 2. When the round hole 2 and the shaft hole 3a of the branch pipe 3 perpendicular to each other coincide with each other, push in the tightening piece 8 which has been screwed together in advance, and place the end locking part 10 of the tightening piece 8 on the water supply pipe 1 side. When it is fed out, the locking shaft portion 10 is fitted into the round hole 2 and positioned, and the packing 11 attached to the locking shaft portion 10 is pressed against the piece stepped portion 8a and tightly contacts the mouth edge 2a of the round hole 2. At the same time, the branch pipe 3 itself receives a reaction force that moves toward the front side when the tightening piece 8 is retracted. Therefore, it is essentially branch pipe 3.
is firmly fixed to the water supply pipe 1. In this case, the amount of insertion of the locking shaft portion 10 into the round hole 2 may be approximately the same as the wall thickness of the water supply pipe 1. In short, it is sufficient that the locking shaft portion 10 does not shift relative to the water supply pipe 1.

When screwing in the tightening piece 8, since the central communication hole 7 has a hexagonal 7a cross section, a tightening tool (see Fig. (not shown) and turn it.

Thus, the water supply pipe 1 is equipped with an appropriate number of branch pipes 3.
to the back of the cage shelf. At this time, the connection to the upper and lower water supply pipes 1 is performed using a suitable connecting pipe 15 such as an elbow. When water is directly absorbed into the cage 14 placed on the cage shelf 13, a known automatic water supply valve 16 is screwed onto the female threaded part 6 of the branch pipe 3, and the drinking port 16a of the water supply valve 16 is connected to the cage 1.
Have it come within 4 days. At this time, the base end surface 16b of the water supply valve 16 comes into contact with the end surface 8b of the tightening piece 8 inserted into the inner part of the branch pipe 3 (see FIG. 2).

In this state, if the experimental animal (not shown) housed in the cage 14 presses or pokes the lever 16c exposed at the drinking port 16a of the water supply valve 16, the lever 16
Since the base of c has a valve function, water is supplied. At this time, the flow reaches the water supply valve 16 from the water supply pipe 1 through the communication hole 7 of the tightening piece body 8, which is a direct diverter piece at the position of the round hole 2.

Next, when a predetermined experiment is completed and the cage 14, cage shelf 13, etc. are cleaned using an autoclave or the like, the branch pipe 3 is separated in order to clean the flow path of the water supply pipe 1 as well. That is, when removing the branch pipe 3, the tightening tool can be removed by inserting the tightening tool into the communication hole 7, which also serves as the tool hole, in the tightening piece 8 of the branch pipe 3, and simply rotating it in the reverse direction. As the locking shaft portion 10 of the piece body 8 retreats and separates from the round hole 2, the packing 11
Since the pressure of
Just pull it out from the end.

FIGS. 5 to 7 show another embodiment in which the drinking spouts are arranged at two locations on both sides of the water supply pipe. In this case, the branch pipe 3 itself is made a little longer, and a branch shaft hole 4 for the water supply pipe is formed in the center thereof, and both ends 3
b, 3b are provided with tightening pieces 8, 8 similar to those described above, screwed into them from the outer ends. That is, the work of fixing the branch pipe 3 to the water supply pipe 1 involves penetrating the water supply pipe 1 into the center of the branch pipe 3 and moving the branch pipe 3 to the positions of the round holes 2 and 2 (of course, at this time, the water supply pipe 1 (The round holes 2 are arranged symmetrically on both sides.) In this state, each round hole 2 is aligned with the locking shaft part 10 of the tightening piece 8 of the branch pipe 3, and the tightening piece is The locking shaft portion 10 is inserted into the round hole 2 by the screw insertion of the body 8, and the packing 11 is inserted into the mouth edge 2 of the round hole 2 as described above.
It comes into close contact with a and becomes fixed. In this embodiment, cages 14 are arranged on both sides of the water supply pipe 1.

<Effects of the invention> As described above, the branching device for water supply piping facing laboratory animal cages, etc. of the present invention has a branching round hole drilled in the water supply pipe and a locking shaft portion that fits into the round hole. Because the configuration is orthogonal combination with a branch pipe that is equipped with a tightening piece and has an axial hole for penetrating the water supply pipe in the middle, when assembling the branch, simply move the branch pipe fitted into the water supply pipe to the round hole position. In this state, just by screwing the tightening piece into the water supply pipe side, the locking shaft fits into the round hole and is positioned, and the pressing of the tightening piece causes the packing to be attached to the edge of the round hole. Since it is a seal, you can easily and reliably prevent water leakage and fix branches with just one touch. Further, in this case, since a known automatic water supply valve can be screwed onto the tip of the branch pipe, direct branch piping to the cage can be provided. Furthermore, since the branch pipe is fixed by screwing and assembling the tightening piece, it can be easily disassembled for purposes such as cleaning the pipe (just loosen it in the opposite direction of tightening). Moreover, it is sufficient to simply fit the locking shaft into the round hole.
This means that the wall thickness of the water supply pipe may be thin, making it possible to use the water supply pipe economically, and the round hole can be simply drilled in the side surface, making it easy to process. In addition, when changing the pitch of branch pipes, only the water supply pipes with round holes spaced at appropriate intervals need to be replaced, and the branch pipes themselves can be used as they are, making it an economical branch device. It has practical effects such as

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main part showing an embodiment of the present invention;
Fig. 2 is a longitudinal side view of the same, Fig. 3 is a separable slope view, Fig. 4 is a slope view of the used state, Fig. 5 is a slope view showing another embodiment, Fig. 6 is a longitudinal side view of the same, 7th
The figure is a perspective view of separation, and FIGS. 8 and 9 are explanatory views of conventional products. 1... Water supply pipe, 2... Round hole for branching, 3... Branch pipe, 4... Branch shaft hole, 8... Tightening piece body, 10...
Locking shaft portion, 11...Packing.

Claims (1)

[Scope of utility model registration request] A round hole for branching is drilled in the side surface of a round pipe type water supply pipe at a predetermined position, and a branch shaft hole having approximately the diameter of the water supply pipe that passes orthogonally through the base end of the branch pipe is fitted into the round hole. The locking shaft formed at the base end of the tightening piece that is screwed into the shaft hole from the tip side is inserted into the round hole with a packing interposed between the outer surface of the water supply pipe and the step part of the tightening piece. A branching device for a water supply pipe facing a laboratory animal cage, etc., in which the proximal end face of a water supply valve screwed into the shaft hole of the branch pipe is brought into contact with the end face of the tightening piece.