JPH08210737A - Refrigerant charging mouthpiece - Google Patents

Abstract

PURPOSE: To provide a refrigerant charging mouthpiece which is constituted to save complication during a work due to a portable tooling and improve working efficiency. CONSTITUTION: In a refrigerant charging mouthpiece 1 wherein a refrigerant charging hose connection port 3 is formed at a socket part 2 connected to a refrigerant cylinder, a wrench insertion part 5 in which a hexagonal wrench 6 is inserted to rotate the socket part 2 is formed on the peripheral edge side of the socket part 2. A refrigerant charging mouthpiece 1 is fastened and removed by the hexagonal wrench 6 without using a monkey wrench.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerant charge base for charging a refrigerant for cold heat products. In particular, the present invention relates to a refrigerant charge base that can be tightened and removed without using a special tightening tool such as a large monkey wrench.

[0002]

2. Description of the Related Art FIG. 2A is a top view of a refrigerant charge base for charging a refrigerant of a cold heat product, and FIG. 2B is a side view of the refrigerant charge base. As shown in the figure, a refrigerant charge base 1 is composed of a socket portion 2 connected to a refrigerant cylinder and having a hexagonal prism shape, and a refrigerant charge hose connection opening 3 which is welded to a central portion of the socket portion 2 and protrudes. . Currently, the connection size of the refrigerant charge hose connection port 3 is 1/4.
An inch or 3/8 inch refrigerant charge base 1 is commonly used.

FIG. 2C is a top view showing the tightened state or the removed state of the refrigerant charge base 1. In the tightening work, first, the refrigerant charge base 1 is fitted to the screw part of the charging port of a refrigerant cylinder (not shown) by a cold heat field engineer (specialized worker, hereinafter, cold heat F
It is called E. ) Manual tightening. A monkey wrench 4 is used as a tightening tool, the socket portion 2 of the refrigerant charge base 1 is sandwiched by the monkey wrench 4, and finally, the monkey wrench 4 is given an appropriate torque to tighten the refrigerant charge base 1.

On the contrary, in the removing work, first,
Refrigerant charge base 1 socket 2 is a monkey wrench 4
Then, the monkey wrench 4 is given an appropriate torque to release the tightening of the refrigerant charge base 1. Finally,
The refrigerant charge base 1 is loosened manually by the cold heat FE, and the refrigerant charge base 1 is removed from the charge port of the refrigerant cylinder.

[0005]

However, in the above-mentioned refrigerant charge base 1, the following points are not taken into consideration.

A monkey wrench 4 is used as a dedicated tightening tool for both tightening and removing the refrigerant charge base 1, and the monkey wrench 4 has a handle length of about 300 mm depending on the size of the refrigerant charge hose connection port 3. Is used. The monkey wrench 4 of this size is relatively large and heavy, and is hardly used except for tightening and removing the refrigerant charge base 1. However, since the above-mentioned monkey wrench 4 is incorporated in the portable jig / tool carried by the cold heat FE during work, the total weight and volume of the portable jig / tool are increased. Therefore, the cold heat F
In E, not only the complexity during work increases due to the portable jig and tool, but also the work efficiency deteriorates.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a refrigerant charge mouthpiece which can reduce the complexity during work due to a portable jig and improve work efficiency. .

[0008]

In order to solve the above-mentioned problems, the present invention relates to a refrigerant charge base having a refrigerant charge hose connection port formed in a central portion of a socket part connected to a refrigerant cylinder. A round wrench, a square wrench, or a polygonal wrench can be inserted on the peripheral side surface to form a wrench insertion portion that can rotate the socket portion. A hexagonal hole into which a hexagonal wrench can be inserted is formed in the wrench insertion portion.

[0009]

In the present invention, a round wrench, a square wrench or a polygonal wrench is inserted into the wrench insertion portion formed in the socket portion of the refrigerant charge base, and a rotational force is applied to the socket portion from any one of the wrench. By being
Both tightening and removal of the refrigerant charge base can be performed. The round wrench, the square wrench or the polygon wrench is
Normally, the cold heat FE is incorporated as an essential tool for a portable jig and tool carried during work, and is lighter in weight and smaller in size than a monkey wrench. Therefore, in the cold heat FE, the complexity during the work due to the portable jig and tool is reduced, and the work efficiency can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below along with an embodiment. In addition, in the embodiment, the portions denoted by the same reference numerals as the configurations shown in FIGS. 2A to 2C have the same functions, and the description will be duplicated. Is omitted.

FIG. 1 (A) is a top view of a refrigerant charging base for charging a refrigerant of a cold heat product, and FIG. 1 (B) is a side view of the refrigerant charging base. As shown in the figure, the refrigerant charge base 1
At the peripheral side surface of the socket portion 2, the wrench insertion portion 5
Is formed. In this embodiment, a hexagonal wrench (polygonal wrench) is inserted into the wrench insertion portion 5, and when the hexagonal wrench itself is given a rotational force, the refrigerant charge cap 1 can be tightened or removed.

In this embodiment, two wrench insertion portions 5 are arranged, and these two wrench insertion portions 5 are socket portions 2
Out of the six side surfaces of the peripheral side of the two opposite side surfaces (positions symmetrical with respect to the refrigerant charge hose connection port 3)
It is arranged in each. That is, when the same rotational force is applied to the two wrench insertion portions 5 in the same rotational direction,
The refrigerant charge hose connection port 3 has no inclination in the advancing direction (screw advancing direction), and the tightening force and the removing force of the refrigerant charge base 1 are efficiently applied to the refrigerant charge base 1. The wrench insertion portion 5 is fixed to the socket portion 2 by welding, for example. The number of the wrench insertion portions 5 arranged is not limited to two, and at least one wrench insertion portion 5 is provided from the point of giving the rotational force, and three or more wrench insertion portions are provided from the point of giving the rotational force and reducing the inclination in the traveling direction. 5 can be placed.

A hexagonal hole 5T into which a hexagonal wrench can be inserted is formed in the wrench insertion portion 5. In the present embodiment, a hexagon wrench having an outer dimension of 4 mm is inserted into the hexagon hole 5T.

Next, the tightening work procedure and the removing work procedure of the refrigerant charge base 1 will be described respectively. FIG.
(C) is a top view showing a tightened state or a removed state of the refrigerant charge base 1.

In the tightening work, first, the refrigerant charge base 1 is tightened manually by the cold FE in accordance with the screw portion of the charge port of the refrigerant cylinder (not shown). At the final stage, the hexagonal wrench 6 is inserted into the hexagonal hole 5T of the wrench insertion portion 5 formed in the socket portion 2 of the refrigerant charge base 1, and the refrigerant charge base 1 is tightened by giving an appropriate torque to the hexagonal wrench 6. . The hexagon wrench 6 is usually incorporated as a tool required for carrying a cold heat FE during work, and is lighter in weight and smaller in size than a monkey wrench. Therefore, in the cold heat FE, the complexity during the work due to the portable jig and tool is reduced, and the work efficiency can be improved.

Next, in the removal work, first, the hexagonal wrench 6 is inserted into the hexagonal hole 5T of the wrench insertion portion 5 of the refrigerant charge base 1, and the hexagonal wrench 6 is given an appropriate torque to remove the refrigerant charge base 1. The tightening is released.
Finally, the refrigerant charge base 1 is loosened manually by the cold heat FE, and the refrigerant charge base 1 is removed from the charge port of the refrigerant cylinder.
Is removed.

The present invention is not limited to the above embodiment. For example, according to the present invention, a round hole or a square hole is formed in a wrench insertion portion of a refrigerant charge cap, and a round wrench (wrench having a circular or oval wrench cross section) or a square wrench (a wrench having a wrench cross section is a quadrangle). ) May be inserted. Further, the present invention may be formed so that a polygonal wrench (wrench having a wrench cross section of triangular, pentagonal or octagonal) other than the hexagonal wrench can be inserted into the wrench insertion portion.

[0018]

According to the present invention, the refrigerant charge cap can be tightened and removed with any one of a round wrench, a square wrench, and a polygonal wrench without using a monkey wrench, which results from a portable jig. It is possible to provide a refrigerant charge base which can reduce complexity during work and improve work efficiency.

[Brief description of drawings]

FIG. 1A is a top view of a refrigerant charging base for charging a refrigerant according to an embodiment of the present invention, FIG. 1B is a side view of the refrigerant charging base, and FIG. 1C is a tightened state of the refrigerant charging base. It is a top view which shows a detached state.

FIG. 2A is a top view of a conventional refrigerant charging base for charging a refrigerant, and FIG. 2B is a side view of the refrigerant charging base.
(C) is a top view showing a tightened state or a removed state of the refrigerant charge base.

[Explanation of symbols]

1 Refrigerant charge base, 2 Socket part, 3 Refrigerant charge hose connection port, 5 Wrench insertion part, 5T Hexagon socket, 6 Hexagon wrench.

Claims (2)

[Claims] 1. A refrigerant charge mouthpiece having a refrigerant charge hose connection port formed in a central portion of a socket part connected to a refrigerant cylinder, wherein a round wrench, a square wrench or a polygonal wrench is inserted into a peripheral side surface of the socket part. A refrigerant charge base characterized in that a wrench insertion portion that allows the socket portion to rotate is configured. 2. The refrigerant charge base according to claim 1, wherein the wrench insertion portion is formed with a hexagonal hole into which a hexagonal wrench can be inserted.