JP2916982B2 - Fluid outlet fitting cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint cap for closing a joint connection port of a fluid outlet for hot water, gas or the like.

[0002]

2. Description of the Related Art Conventionally, for example, in a fluid outlet used for hot water heating, a joint connection port is closed by a joint cap in order to enhance safety such as prevention of water leakage when not in use. Conventionally, as such a joint cap, a rubber cap or a resin cap having a water blocking ring interposed therein has been used.

[0003]

However, the conventional joint cap is fitted to such an extent that it cannot be pulled out of the joint connection port by tightening. There was a problem that it could not withstand and dropped out to cause water leakage. In order to sufficiently withstand the fluid pressure, the sliding contact resistance may be increased by increasing the tightening force with respect to the joint connection port. However, as the resistance increases, it becomes difficult to attach and detach the joint cap.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a joint cap having a structure which can be easily attached / detached and which can sufficiently withstand a fluid pressure in order to prevent water leakage due to falling off. The purpose is.

[0005]

Means for Solving the Problems As means for solving the above-mentioned problems, the invention according to claim 1 is directed to a joint cap for closing a joint connection port of a fluid outlet, wherein the joint cap is provided at the joint connection port. a cap body being inserted and removed, and expanded freely movable engagement pawls which are biased into engagement with the locking portion provided on the fluid outlet by inserting the cap body to said joint connecting port, the movable extending outwardly and the other end of the cap body with one end claw is connected
Being pulled from the outside of the cap body
The movable engagement claw and the locking portion of the fluid outlet;
Thereby releasing the engagement, the flow of the cap body
And a pulling part to be pulled out from the joint connection port of the body outlet ".

According to a second aspect of the present invention, the movable engaging claw is made to bite into the engaging portion of the engaging surface between the movable engaging claw and the engaging portion with respect to the removing direction of the cap body. The joint cap for a fluid outlet according to claim 1, wherein the angle is provided.

[0007]

In the joint cap according to the first and second aspects of the present invention, the cap body is inserted into the joint connection port and is urged to engage with the locking portion provided on the fluid outlet. With the configuration of the movable engaging claw that can be expanded,
Unlike the joint cap, which does not come off from the joint connection port due to sliding contact resistance, when the cap body is inserted into the joint connection port, the movable engaging claw engages with the locking part by urging and expands outward The cap body can be securely locked in the joint connection port in a state where it cannot be removed without performing.

Then, one end is connected to the movable engagement claw, and the other end is extended out of the cap body, and is pulled .
Release the engagement and leave the cap body as it is through the joint connection port.
With the structure of the pulling portion for pulling out, the cap body can be easily pulled out from the joint connection port.

Further, in the joint cap according to the second aspect of the present invention, the movable engaging claw and the engaging portion are formed so that the movable engaging claw bites into the engaging portion in the pulling-out direction of the cap body. With the configuration in which the engagement surface is provided with an angle, when the fluid pressure is applied, the engagement of the movable locking claw with the locking portion is enhanced, and the cap body can be reliably prevented from falling off. It has become.

[0010]

Next, an embodiment of a joint cap according to the present invention will be described with reference to the drawings.

[0011] As shown in FIG.
0 is a fluid outlet 20 having two joint connection ports 30
0, and the cap body 10 is
It is formed in a shape corresponding to the opening 201 facing the joint connection port 30. The fluid outlet 200 is provided with a hook-shaped locking portion 40 whose tip 41 is bent upward and protrudes into the opening 201. A through hole 12 is provided in the back surface of the cap body 10 (the side opposite to the joint connection port 30), and a rosary-shaped tension portion 24 extends to the outside through the through hole 12.

As shown in FIG. 2, the cap body 10 is
It has a movable engagement claw 17 that engages with the locking portion 40. The movable engaging claw 17 is a tip claw portion 18 bent downward.
have. Therefore, the distal claw portion 18 of the movable engagement claw 17 and the distal end 41 of the locking portion 40 engage so as to mesh with each other. Note that the engagement between the movable engagement claw 17 and the locking portion 40 may be any as long as it can engage in the direction sunk by the fluid pressure from the joint connection port 30, that is, in the direction in which the cap main body 10 is detached. There is no limitation on the position or number of the positions.

The movable engagement claw 17 is assembled together with the block 13 provided with the insertion hole 14 corresponding to the joint connection port 30 and is fitted into the cap body 10 through the opening 11 and fixed. In this case, the movable engagement claw 17 fits into the central cutout 15 of the block 13,
The shaft 20 provided at the base is fitted into the bearing portion 16. A water blocking ring 31 (FIG. 1) is fitted into the joint connection port 30, and the water blocking ring 31 is inserted into the insertion hole 14 with the joint connection port 30 inserted into the insertion hole 14 of the block 13. Are in contact with each other.

One end of a tension portion 24 is connected to the movable engagement claw 17. In this example, a connecting portion 23 that is inserted into a hole 19 provided at the base of the movable engaging claw 17 and connects the spheres 22 constituting the tension portion 24 passes through a slit formed in the leaf spring 21, The sphere 22 is connected by being hooked on the leaf spring 21 (see FIG. 3). Therefore, by pulling the pulling portion 24, the movable engaging claw 17
Is rotated about a shaft 20 so that the distal claw portion 18 is opened upward. The reason that the expansion is free is as follows.
Tip claw portion 18 of movable engagement claw 17 and tip 41 of locking portion 40
This is because it is possible to release the engagement with. Further, in this case where the distal claw portion 18 of the movable engaging claw 17 and the distal end 41 of the locking portion 40 are arranged on the same line, the distal claw portion 18 rides over the distal end 41 of the locking portion 40. It is necessary to expand it to make it engageable. Note that the expanding direction of the distal claw portion 18 is not limited to the upward direction, and may be a downward or leftward and rightward rotating direction. In such a case, the distal end 41 of the locking portion 40 may be arranged to correspond to them. Good. Further, the expanding structure is not limited to the structure that rotates around the shaft 20, and the expanding structure may be such that the distal claw portion 18 slides up and down, left and right, and the like.

The upper portion of the movable engagement claw 17 is formed to be bent in a C-shape, and has a metal leaf spring 21 inside. The leaf spring 21 has its upper end in contact with the inner wall of the cap body 10 in a state of being fitted into the cap body 10, whereby the movable engaging claw 17 is lowered, that is, the engaging portion 40.
Is always urged in the direction of engagement.

Now, the movable engaging claw 17 when detaching the joint cap 100 thus constructed to and from the joint connection port 30 will be described.
3 to 6 will be described below with reference to FIG. In the figures, the joint cap 100 is shown as an end view for easy understanding of the main parts, and the joint connection port 30 is shown in FIG. 6, and a part of the joint connection port 30 is omitted in FIGS. 3 to 5. . First, when the joint cap 100 is inserted into the joint connection port 30, as shown in FIG. 3, the distal claw portion 18 of the movable locking claw 17 of the cap body 10 and the distal end 41 of the locking portion 40 abut. . In the case of this example, the outer surface 18a of the tip claw portion 18
Are formed to be inclined. For this reason, the movable locking claw 17 automatically expands as the cap body 10 is inserted by digging against the bias of the leaf spring 21.
Then, as shown in FIG.
Is engaged with the locking portion 40 by the bias of the leaf spring 21. As a result, the cap body 10 can be securely locked in the joint connection port 30 in a state where the cap main body 10 does not come off.

In the case of this example, the inner surface 18 of the tip claw portion 18, which is the engagement surface between the movable engagement claw 17 and the locking portion 40,
The angle “b” and the inner side surface 41 a of the distal end 41 are arranged so that the movable engaging claw 17 bites into the locking portion 40 with respect to the removal direction of the cap body 10. For this reason, when fluid pressure is applied to the joint connection port 30, the engagement of the movable locking claw 17 with the locking portion 40 acts to be strong, so that the cap main body 10 can be reliably prevented from falling off. It has become.

Next, the joint cap 1
5, the one end is connected to the movable engagement pawl 17 and the other end is connected to the cap body 1 as shown in FIG.
By pulling the pulling portion 24 extending outward from the position 0, the movable engaging claw 15 is rotated about the shaft 20 to expand the hole, thereby releasing the engagement. . The disengaged cap body 10 is pulled out of the joint connection port 30 as it is by pulling the pulling portion 24 to be in the state shown in FIG.

In the above embodiment, the joint cap 10
0 is a fluid outlet 2 having two joint connection ports 30
However, the present invention can be similarly applied to the fluid outlet 200 having one joint connection port 30 regardless of the number of the joint connection ports 30.

[0020]

As described above, according to the first and second aspects of the invention, the structure of the structure in which the movable engaging claw and the engaging portion are engaged can sufficiently withstand fluid pressure. The effect of preventing the occurrence of water leakage due to falling off is higher than that of the conventional fitting cap by fitting, and the structure of the movable engaging claw that can be expanded allows easy attachment and detachment to the fitting connection port. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a joint cap according to the present invention.

FIG. 2 is an exploded perspective view of the embodiment shown in FIG.

FIG. 3 is an end view showing a procedure of a detaching operation on a joint connection port.

FIG. 4 is an end view showing one procedure of a detaching operation on a joint connection port.

FIG. 5 is an end view showing a procedure of a detaching operation on a joint connection port.

FIG. 6 is an end view showing one procedure of a detaching operation on a joint connection port.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cap main body 17 Movable engaging claw 21 Leaf spring 24 Tension part 30 Joint connection port 100 Joint cap 200 Fluid outlet

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16L 55/00-55/24 F16K 1/00-13/10 B65D 35/00-55/16

Claims (2)

(57) [Claims] 1. A joint cap for closing the joint connecting port of the fluid outlet, and a cap body to be inserted into or removed from the joint connecting port provided in the fluid outlet by inserting the cap body to said joint connecting port and expanding freely movable engagement pawls which are biased into engagement with the locking portions, the outside of the other end with one end movable Dogakari pawl is connected is the key <br/> cap body Extending outside the cap body
From the movable engagement claw and the flow
Thereby releasing the engagement between the engaging portion of the body outlet, before
The cap body from the joint connection port of the fluid outlet
A coupling cap for a fluid outlet, comprising: a pulling portion to be extracted ; 2. An engaging surface between the movable engaging claw and the engaging portion is provided with an angle with respect to a direction in which the cap main body is removed so that the movable engaging claw can bite into the engaging portion. The joint cap for a fluid outlet according to claim 1.