JPH0579191U - Pipe fitting cap - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cap for a pipe joint in which the outer periphery of the union is not scratched and the insulator is not peeled off. A cap 21 of a pipe joint having an insulator 13 on the outer circumference of a tube 3 connected to the union 11, wherein a union hexagonal portion 11b and a skirt portion covering the outer circumference of the insulator 13 are provided on the periphery of a cap body 21a that covers the outer circumference of the union 11. 21b is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe joint cap that is attached to, for example, a joint portion of an inlet / outlet tube of an evaporator in an air conditioner.

[0002]

[Prior Art]

 Generally, it is an evaporator for an automobile air conditioner, which is mounted on the front part of the driver's seat, and the joint part of the inlet / outlet tube is inserted into the engine room through the fire boat, and the inlet / outlet tube is installed in the engine room. An evaporator is known in which the joint part of is connected to a refrigerant pipe.

In this type, a cap is attached to the joint portion of the inlet / outlet tube so as to prevent dust, dust, and water from entering the evaporator before mounting on an automobile (Actual No. Sho 63-121894). .

As shown in FIGS. 4 and 5, the conventional cap 29 is attached to the screw portion 31 a of the union 31 to prevent dust, dust, water, etc. from entering the tube 33 connected to the union 31. It has become.

[0005]

[Problems to be solved by the device]

 However, in the conventional configuration, when the fitting part of the inlet / outlet tube of the evaporator is inserted into the engine room through the fire boat, the (1) hexagonal part 31b of the union 31 is damaged by hitting the fire boat. There are problems such as easy sticking and (2) the insulator (heat insulating material) 35 wound around the outer periphery of the tube 33 is easily peeled off.

Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technique and provide a pipe joint cap that does not have a flaw on the outer periphery of the union or the insulator does not peel off. Especially.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is a cap for a pipe joint having an insulator on the outer circumference of a tube connected to a union, wherein the union hexagonal portion and the outer circumference of the insulator are provided on the periphery of the cap body covering the outer circumference of the union. It is characterized by having a skirt portion to cover it.

[0008]

[Action]

 According to the present invention, for example, when the evaporator is mounted on a vehicle and the tip of the inlet / outlet tube is passed through the fire board at the front of the vehicle, the skirt portion of the cap causes the hexagonal portion of the union and the insulator to be inserted. As a protection, even if the fire board hits the outer circumference of the union, the union hexagonal part will not be scratched or the insulator will not come off.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 3 is a cross-sectional view showing a front portion of a driver's seat of an automobile. An evaporator 1 according to this embodiment has an inlet / outlet tube 3 penetrating a fire board 5 and inserted into an engine room 7, and the engine is A refrigerant pipe (not shown) is connected to the inlet / outlet tube 3 in the room 7.

The inlet / outlet tube 3 is made of aluminum, and a union 11 is connected to its tip as shown in FIG. An insulator (heat insulating material) 13 is wound around the outer circumference of the inlet / outlet tube 3, and the outer diameter of the insulator 13 is formed to be substantially the same as the outer diameter of the hexagonal portion 11b of the union 11.

In addition, the cap 21 made of vinyl chloride according to the present embodiment is connected to the cap main body 21a in the shape of a bag that covers the screw portion 11a of the union 11 and the peripheral edge of the cap main body 21a, and the hexagonal portion 11b of the union 11. And a scart portion 21b that covers the outer periphery of the insulator 13.

On the inner end surface of the cap body 21a, there is an annular seal protrusion 23 extending in the axial direction, and when the cap 21 is mounted on the union 11, it comes into contact with the seal portion 11c of the union 11, A protruding seal 23 is provided to protect the seal 11c. 27 is a knob for attaching and detaching the cap 21.

In addition, at the inner circumference of the joint portion that connects the cap body 21a and the skirt portion 21b, the outer circumference of the threaded portion 11a of the union 11 is gripped to prevent the cap 21 from falling off. The convex portion 25 is provided so as to project.

The cap 21 is manufactured by so-called dip molding.

The dip molding will be briefly described. As shown in FIG. 2, the mold material 31 is immersed in a resin (vinyl chloride), and the resin is attached to the outer periphery of the mold material 31 to manufacture the mold. According to this, the manufacture thereof is easy, and furthermore, the cap 21 can be easily provided with the seal convex portion 23, the drop-out preventing convex portion 25, and the knob portion 27.

To explain the operation of this embodiment, referring to FIG. 3, the tip of the tube 3 is inserted into the engine room 7 through the fire board 5 while the cap 21 is attached. Then, the cap 21 is removed in the engine room 7, and the refrigerant pipe is connected thereto.

According to this, first, by providing the cap 21, dust, dust, water and the like do not enter the inlet / outlet tube 3 of the evaporator 1. Further, since the cap 21 is provided with the skirt portion 21b, the hexagonal portion 11b of the union 11 and the insulator 13 are protected, so that inconveniences such as scratches and peeling of the insulator 13 are eliminated.

In particular, when the tip of the inlet / outlet tube 3 penetrates the fire board 5, it penetrates a portion of a grommet (not shown) provided in the penetrating portion, but The gap is small, and in the conventional structure, when the gap is penetrated, the fire board 5 is hit and the insulator 13 is peeled off.

In this embodiment, the cap 21 is provided with the skirt portion 21b to protect the hexagonal portion 11b of the union 11 and the insulator 13, so that the above-mentioned inconvenience is eliminated and the insulator 13 can be prevented from peeling off. .

[0021]

[Effect of the device]

 As described above, the pipe joint cap according to the present invention facilitates insertion into the grommet when mounted on a vehicle, prevents the insulator from curling, and protects the union. Furthermore, the hexagonal union eliminates the risk of damaging the grommet, and the hexagonal union is not damaged during transportation. In addition, if it is a dip molded product and a protrusion is provided at the inner end corresponding to the union, the cost can be reduced, the sealing property can be maintained, dust and water can be prevented from entering, and the protrusion is provided on the inner peripheral surface. If so, it is possible to prevent the cap from falling off. In addition, if a knob is provided at the tip of the cap, it is easy to remove the cap.

[Brief description of drawings]

FIG. 1 is a state diagram in which an evaporator is mounted on an automobile.

FIG. 2 is a sectional view showing an embodiment of a pipe joint cap according to the present invention.

FIG. 3 is likewise a sectional view for explaining dip molding.

FIG. 4 is a cross-sectional view showing an example of a conventional cap.

FIG. 5 is a cross-sectional view showing an example of a conventional cap.

[Explanation of symbols]

 11 union 11a screw part 11b union hexagonal part 13 insulator 21 cap 21a cap body 21b skirt part

Claims (1)

[Scope of utility model registration request] 1. A cap for a pipe joint having an insulator on the outer circumference of a tube connected to the union, wherein a hexagonal part of the union and a skirt part covering the outer circumference of the insulator are provided on the peripheral edge of a cap body covering the outer circumference of the union. Characteristic pipe joint cap.