JPH0653904U - Projection size measurement jig used for flare processing of refrigerant copper tubes - Google Patents

Abstract

(57) [Summary] [Purpose] I would like to obtain an extrusion dimension measurement jig that is easy to work with and that allows the extrusion dimension to be set accurately. [Structure] A guide core 12 is provided at the center of the ring 11, and a protruding dimension setting step 13 is formed at the base of the guide core 12,
The height between the step 13 and the lower end 11a of the ring 11 is set to 0.5 mm.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an overhanging dimension measuring jig used for flaring a refrigerant copper tube.

[0002]

[Prior art]

 The refrigerant copper pipe connecting between the heat source unit and the radiator is subjected to flare processing 3 on the tip 2 of the copper pipe 1 as shown in FIG. A method is used in which the flare nut 4 is in close contact with the union surface 6 and fixed. FIG. 4 shows a flared copper tube. This flaring is performed by inserting the tip 2 of the copper tube 1 into the set hole 8 of the flaring ring 7 and the tip 2 of the copper tube 1 as shown in FIG. Project 0.5 mm from the upper surface 7a of the flaring bar 7, insert a flare cone 9 for flare work from above as shown in FIG. 6, and spread the tip 2 of the copper tube 1 along the tapered surface 8a. The flare processing 3 is performed by making the diameter.

[0003]

[Problems to be solved by the device]

 However, the conventional flare processing described above has the following drawbacks.

A. Since the protruding size is as small as 0.5 mm, it is difficult to accurately measure this size, and it takes time and requires skill.

B. If the protrusion size is incorrect, the size of the processed flare surface will vary, resulting in defective flare processing and gas leakage.

An object of the present invention is to provide a protrusion size measuring jig which does not have the defects described in the above a and b.

[0007]

Means for Solving the Problems The structure of the protruding dimension measuring jig according to the present invention is as follows.

A guide core to be inserted into the copper pipe is provided at the center of the ring that abuts the upper surface of the flare ring bar, and the base of the guide core has a protruding dimension with the lower end of the ring set to 0.5 mm. A protruding dimension measuring jig used for flare processing of a refrigerant copper pipe, which has a set step and a visual window so that this step can be seen from the outside.

[0009]

[Action]

 When flaring, insert a copper tube into the set hole of the flaring ring and project it slightly above the top surface of the bar. In this state, the guide core of the jig is inserted into the hole of the copper tube, and the lower end of the ring is brought into contact with the upper surface of the fullering bar while abutting the tip of the copper tube against the protruding dimension setting step of the jig. As a result, the distance from the top surface of the bar to the tip of the copper tube protruding is set to 0.5 mm. The condition set at 0.5 mm can be confirmed from the viewing window. When dimensioning is complete, fix the flaring bar and perform flaring using flare cones.

[0010]

【Example】

 FIG. 1 shows a protrusion dimension measuring jig according to the present invention. 10 is a jig main body, and this jig main body 10 includes a ring 11, a guide core 12 provided at the center thereof, a protruding dimension setting step portion 13 formed at the base of the guide core 12, and a viewing window (peep window). 14 and the height of the lower end 11a of the ring 11 and the protruding dimension setting step portion 13 is 0.5 mm.

FIG. 2 is an explanatory view of a situation in which the jig having the above-mentioned configuration is used for dimensioning, and the lower end 11a of the ring 11 of the jig body 10 is brought into contact with the upper surface 7a of the flare ring bar 7 to make the copper. By abutting the tip 2 of the tube 1 against the stepped portion 13, the protruding size can be set accurately to 0.5 mm, and this situation can be confirmed through the visual window 14. The flare processing after dimensioning is the same as the conventional example.

[0012]

[Effect of device]

 By setting the protrusion amount using the protrusion dimension measuring jig according to the present invention, not only the flaring work can be performed easily, but also the protrusion amount can be accurately set to 0.5 mm. There is no need to worry that it may cause gas leakage.

Further, since the guide core is provided at the center of the jig, the positional relationship between the jig and the copper tube at the time of measurement can always be set to be constant.

[Brief description of drawings]

FIG. 1 is an explanatory view of a protruding dimension measuring jig according to the present invention.

FIG. 2 is an explanatory view of a usage example of a jig.

FIG. 3 is an explanatory diagram of a connection example of a copper pipe.

FIG. 4 is an explanatory diagram of flare processing of a copper tube.

FIG. 5 is an explanatory view of a situation where a copper tube is set on a flaring ring bar during flare processing.

FIG. 6 is an explanatory diagram of a situation in which flare processing is performed using a flare cone.

[Explanation of symbols]

 10 Jig body 11 Ring 11a Lower end of ring 12 Guide core 13 Projection dimension setting step 14 Visual window

Claims (1)

[Scope of utility model registration request] 1. A guide core to be inserted into a copper pipe is provided at the center of a ring that abuts the upper surface of a flare ring bar, and the size of the lower end of the ring is 0.5 at the base of the guide core.
A protruding dimension measuring jig used for flare processing of a refrigerant copper pipe, which is formed by forming a protruding step having a dimension set to mm and forming a visual window so that the step can be viewed from the outside.