JPH0519787U - Plastic Service Qi - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a small, lightweight, inexpensive plastic service team. [Structure] A plastic service tee having a service tee main body 1 for connecting a branch pipe 17 to a plastic main pipe 3. A punching tool holder 11 is provided on the tubular portion 7 of the service main body 1, and a punching tool 13 is attached to the punching tool holder 1 so as to be inclined with respect to the axis of the tubular portion 7. The cross-sectional area of the tubular portion 7 is reduced by the amount of this tilting.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a plastic service team.

[0002]

[Prior Art]

 Generally, a plastic service team for connecting a branch pipe to a plastic main pipe without interrupting the flow in the main pipe is known.

As shown in FIGS. 3 and 4, this type of product has a service main body 33 fused to a main pipe 31 made of plastic. A punching tool holder 35 is attached to the cylindrical portion 34 of the service main body 33, and a punching tool 36 is attached to the punching tool holder 35 so as to be vertically movable on a line parallel to the axis of the cylindrical portion 34.

When the perforation tool 36 is lowered, as shown in FIG. 5, a first communication hole 37 is perforated in the main pipe 31, the perforation tool holder 35 is rotated about 180 °, and then the perforation tool 36 is again lowered. When lowered, the second communication hole 38 is perforated. These communication holes 37, 38 are substantially elliptical with two circles overlapping each other, and the area of the communication holes 37, 38 is substantially equal to the cross-sectional area of the main pipe 31.

After the communication holes 37 and 38 are bored, as shown in FIG. 4, a branch pipe 41 having a diameter substantially the same as that of the main pipe 31 is connected to the service-chi main body 33, whereby the main pipe 31 and the branch pipe 41 are connected. The flow to is formed.

By the way, in order to connect the branch pipe 41 having substantially the same diameter as the main pipe 31 to the main pipe 31 as described above, in order to secure a flow passage area equivalent to the branch pipe 41, the main pipe 31 is connected to the main pipe 31 twice. The communication holes 37, 38 must be drilled through.

[0007]

However, according to the conventional configuration, since the punching tool 36 is moved up and down twice for punching the communication holes 37 and 38, the service team is moved up and down. There is a problem that the cross-sectional area of the cylindrical portion 34 of the main body 33 must be widened.

[0008] Widening this leads to a large size and weight of the service main body 33, which is uneconomical in terms of materials.

Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional techniques and to provide a plastic service team that can be made compact and lightweight.

[0010]

[Means for Solving the Problems]

 The main body of the service tee for connecting the branch pipe to the main pipe made of plastic is provided, and the plastic service tee is equipped with a punching tool for piercing the main pipe with the communication hole twice in the main body of the main body of the service tee. In addition, a punch tool holder is provided in the tubular part of the main body of the service chi, and the punch tool is attached to this punch tool holder by tilting it with respect to the axis of the tubular part, and the cross-sectional area of the tubular part is increased by this tilting amount. It is characterized by the reduction.

[0011]

[Action]

 According to the present invention, since the perforator is attached to the perforation tool holder so as to be inclined with respect to the axis of the tubular portion, the sectional area of the tubular portion can be reduced by the amount of the inclination. Therefore, the amount of material can be reduced by that amount, and the size and weight of the main body of the service tee can be reduced.

[0012]

【Example】

 An embodiment of a plastic service tee according to the present invention will be described below with reference to FIGS.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a service Qi main body. The service main body 1 includes a saddle portion 5 to be fused to a plastic main pipe 3, a tubular portion 7 connected to the saddle portion 5, and a boss portion 8 connected to the tubular portion 7. .. A punch tool holder 11 is attached to the upper end of the tubular portion 7 via a nut 9, and the punch tool 13 is attached to the punch tool holder 11 at an angle θ _{1 with} respect to the axis of the tubular portion 7. Has been. A cap 15 is attached to the punch tool holder 11.

Next, the operation of this embodiment will be described.

First, the service main unit 1 is fused to the plastic main pipe 3, and the branch pipe 17 is fused to the boss portion 8 of the service main unit 1. In this case, the flow inside the main pipe 3 is not blocked.

Next, after removing the cap 15, the perforation tool 13 is lowered along the line l ₁ while rotating the perforation tool 13 using a jig as shown in FIG. The tip of the perforation tool 13 is a cylindrical cutting blade, and when the perforation tool 13 is lowered, the wall of the main pipe 3 is extracted and a part of this wall is inserted into the cylindrical cutting blade. To be captured. Thereby, the first communication hole (see FIG. 5) is bored in the main pipe 3.

Next, after raising the perforation tool 13, the nut 9 is loosened, the perforation tool holder 11 is rotated by about 180 °, and the nut 9 is tightened again. In this state, the inclination of the punch 13 is the inclination θ ₂ opposite to the above. Similarly to the above, when the punching tool 13 is lowered using a jig, the punching tool 13 descends along the line l ₂ as shown in FIG. 1. When it is lowered, the wall of the main pipe 3 is pulled out and a part of this wall is trapped in the cylindrical cutting blade. As a result, the second communication hole (see FIG. 5) is bored in the main pipe 3.

Finally, the piercing tool 13 is raised and the cap 15 is attached. If the service main body 1 is used, the flow from the main pipe 3 to the branch pipe 17 is formed with the communication holes communicating, so that the flow inside the main pipe 3 is not blocked at all. A branch pipe 17 can be connected to 3. Since a part of the extracted wall is captured in the cylindrical cutting blade, there is no risk that it will fall off and enter the flow inside the main pipe 3.

Therefore, according to this embodiment, the perforating tool holder 11 is provided on the tubular portion 7 of the service main body 1, and the perforating tool holder 11 is perforated while being inclined with respect to the axis of the tubular portion 7. Since the tool 13 is attached, the cross-sectional area of the tubular portion 7 can be reduced by the amount of tilting, as is apparent from FIG.

Therefore, according to this embodiment, the material can be saved accordingly, so that the size and weight of the service main body 1 can be reduced, and the cost can be reduced. And other effects.

[0021]

[Effect of the device]

 As is apparent from the above description, according to the present invention, the punch tool holder is provided in the tubular portion of the main body of the service station, and the punch tool is attached to the punch tool holder while being inclined with respect to the axis of the tubular portion. Since the cross-sectional area of the tubular portion can be reduced by the amount of this tilting, the size and weight of the main body of the service tee can be reduced, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a service team according to the present invention.

FIG. 2 is a front sectional view of the same.

FIG. 3 is a side sectional view showing a conventional service team.

FIG. 4 is a front sectional view of the same.

FIG. 5 is a plan view showing a shape of a communication hole formed in a main pipe.

[Explanation of symbols]

 1 Service Qi main body 3 Main pipe 5 Saddle part 7 Cylindrical part 8 Boss part 11 Punch holder 13 Punch tool 15 Cap 17 Branch pipe

Claims (1)

[Scope of utility model registration request] 1. A plastic provided with a service main body for connecting a branch pipe to a plastic main pipe, and a punching tool for perforating a communication hole twice in the main pipe is attached to a cylindrical portion of the service main body. In the service tee manufactured by the present invention, a punch tool holder is provided on the tubular portion of the service chi main body, and the punch tool is attached to the punch tool holder while being inclined with respect to the axis of the tubular portion. A plastic service Qi with a reduced cross-sectional area.