JP2000329270A - Connector for gas cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector to be easily inserted by registering a connector with the outer peripheral groove of a hose end, eliminate a need for a fastening tool, prevent the occurrence of slip-off after insertion, and simplify removing operation. SOLUTION: This connector consists mainly of the connection port 15 of a connection pipe, and a cylindrical body 10 having the insertion port 16 of a hose end 102. A retainer 40 is provided at the end part of the insertion port 16 with a fixing part 41 fixed at this end part, a lock part 44 fitted in the outer peripheral groove 102A of the hose end when it is elastically deformable and elastically deformed radially and internally in a body, and a tape part 45 causing the lock part 44 to bend radially internally. An operation ring 50 having a press piece 51 engaged with the outer peripheral surface of a body in a screwing manner and bending the lock part 44 radially, and internally through contact with the taper part 45 of a retainer is assembled on the outer peripheral surface of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for a gas tap or the like, and more particularly, to a case in which a rubber tube having a connection socket is connected to a hose end (connecting portion) of the gas tap, or a tap for water supply. The present invention relates to an improved structure of a connecting tool used for connecting a rubber tube to a connector.

[0002]

2. Description of the Related Art As shown in FIG. 13, when a rubber tube (also referred to as a rubber hose) 131 is conventionally connected to a hose end 102 of a piped gas stopper 101, a connecting tool 111 is connected to the hose end 102. While installing, rubber tube 1
Reference numeral 31 denotes a connection socket (also simply referred to as a socket).
The fitting 121 is attached to the insertion portion 114 of the connecting tool 111, and the fitting hole 123 of the socket 121 is attached and detached, thereby simplifying the connection and separation (removal) of the rubber tube 131. In FIG. 13,
103 is an opening / closing cock of the gas stopper 101, 112 is a connection hole of the connection tool 111 for the hose end 102, and 122 is a connection part to the rubber tube 131. In addition, this type of connecting device 1
11 has a safety valve structure that opens when the socket 121 is connected and closes when the socket 121 is not connected.

[0003] As shown in FIG. 14, a conventional connection tool 111 has a connection side 113 forming a connection hole 112 formed of a rubber body that can be easily inserted into a hose end 102. Are fastened and fixed by clips 115. Another conventional connector 11 shown in FIG.
1A, the connection side 113A of the hose end 102 is formed of a hard material,
The structure is fixed by tightening at 16.

However, the connecting member 111 has a problem that the connecting side 113A is made of a rubber material, so that it is easy to come off from the hose end 102 even if it is fixed with the clip 115. However, there is a problem that the hexagon wrench 117 is required for tightening the fixing bolt 116, and it is difficult to perform the tightening operation.

In order to solve such a problem, an improved connector 150 shown in FIG. 16A has been devised.

That is, the connector 15 shown in FIG.
0 has a retainer 155 having a locking claw 154 attached to one end of an insertion opening 151 of the hose end 102 at one end and an insertion end 151 of a cylindrical main body 153 having an insertion portion 152 of the connection socket 121 at the other end; A sleeve 156 for tightening and releasing the retainer 155 is provided on the main body 15.
(3) A structure in which the outer periphery is screwed (see the screwing portion 157). 158 is a packing.

[0007] In this connecting device 150, the insertion hole 151 is inserted into the hose end 102, and the outer peripheral groove 1 of the hose end 102 is
After aligning the locking claw 154 of the retainer 155 with the 02A, the sleeve 156 is screwed to tighten the retainer 155, and the locking claw 154 is engaged with the outer peripheral groove 102A, thereby fixing the connection tool 150 to the hose end 102. I try to make it. The improved fitting 150 is a hose end 102
The fixing to the hose end 102 does not require a tool such as a hexagon wrench.

[0008]

However, the above-described improved connector 150 has the locking claw 154 of the retainer 155 when the hose 150 is attached to the hose end 102.
Before and after tightening at 56, since the length L1 of the main body 153 changes to L2 as shown in FIGS.
An engaging claw 1 is inserted into a predetermined outer circumferential groove 102A of the hose end 102.
Even if the position 54 is positioned, there is a problem that the position of the locking claw 154 is displaced if tightened by the sleeve 156, and there is a problem that the connection tool 150 tightened at the displaced position is easily removed from the ace end 102. Further, as shown in FIGS. 16A and 16B, since the tip of the sleeve 156 is covered with the locking claw 154 of the retainer 155, the tip of the locking claw 154 is difficult to see from the outside, and the locking claw 154 is connected to a hose. End 102
There is also an inconvenience that positioning is difficult in the outer peripheral groove 102A.

Therefore, an object of the present invention is to solve the inconvenience of the improved connecting device 150 described above, and is not limited to the gas plug hose end, but to other fluid supply hoses. It can also be used for connection of the end, it is easy to align and fit into the outer peripheral groove of the hose end, does not require a tightening tool, does not come off after being inserted into the hose end, and An object of the present invention is to provide a connector that is easy to operate.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 has a connection port of a connection pipe at one end,
And the main body is a cylindrical main body having an insertion end of a hose end for supplying a fluid at the other end, and a fixing portion fixed to the end of the insertion end, an elastically deformable and main body radial direction A locking portion that can be fitted into the outer peripheral groove of the hose end when elastically deformed inward, and a retainer having a tapered portion that deflects the locking portion radially inward are provided, and an outer peripheral surface of the main body is provided. Is characterized in that an operating ring having a pressing piece screwed to the outer peripheral surface so as to be screwable and abutting against the tapered portion of the retainer to deflect the locking portion radially inward is assembled. .

According to the first aspect of the present invention, the following operation and effect can be obtained. In use, the operating ring is located on the side of the body opposite the retainer. The insertion opening of the main body is inserted into the hose end, and the retaining portion of the retainer is positioned in a predetermined outer circumferential groove of the hose end. Thereafter, the operating ring is screwed toward the retainer, the retaining piece of the operating ring is sufficiently brought into contact with the tapered portion of the retainer, and the locking portion is bent inward in the radial direction of the main body, and is locked in the positioned outer circumferential groove. The part is fitted and fixed. Since the locking portion is fixed in a state of being cut into the outer circumferential groove of the retainer, the main body and the hose end are sufficiently inserted. Since the length of the connector does not change when the locking portion is positioned and when the hose end in which the locking portion is bent inward in the radial direction is inserted, the length can be directly engaged with the aligned outer circumferential groove and fixed. Easy to align. In addition, a connection part of the connection pipe is connected to a connection port of the connection tool inserted and fixed to the hose end, and fluid from the hose end can be sent to the connection pipe. When removing the connecting tool inserted and fixed to the hose end, the operation ring in contact with the tapered portion is screwed toward the anti-retainer side to release the locking state of the locking portion and can be easily removed from the hose end. .

According to a second aspect of the present invention, in order to solve the above-mentioned problem, the first aspect of the present invention is characterized in that a contact structure is formed in the insertion end of the hose end so as to be in close contact with the outer periphery of the inserted hose end. .

According to the second aspect of the present invention, the connector inserted into the hose end is tightly joined to the hose end in a close contact structure in the insertion opening. Therefore, the fluid at the hose end is sent into the main body without leaking.

According to a third aspect of the present invention for solving the above-mentioned problems, in the first or second aspect, the connecting pipe is a gas rubber pipe having a connecting socket attached thereto,
A hose end is provided on the gas stopper that supplies gas, and a safety valve structure in which the valve opens when the rubber tube socket is connected to the connection port in the main body and closes when the socket is removed. It is characterized by being incorporated.

The connecting device according to the third aspect of the present invention is detachably inserted into the hose end of the gas stopper. The connection port inserted into the hose end is closed by the safety valve structure, and gas at the hose end does not leak. A connection socket connected to a rubber tube is connected to a connection port of the connection tool inserted into the hose end. The connection of the socket opens the safety valve structure and the gas at the hose end flows to the rubber tube. When the connection socket is removed from the connection port, the connection port is closed by the safety valve structure.

[0016]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. As shown in FIG. 1A, a connector 1 according to this embodiment includes a gas pipe socket 1.
Connection port 15 for connecting to gas outlet 21
The main body is a cylindrical main body 10 having an insertion port 16 into which the second body 02 is inserted. A retainer 40 having a locking claw 44 is attached to an end of the insertion opening 16, and a locking claw 44 of the retainer 40 is engaged with or released from the hose end 102 on the outer peripheral surface of the main body 10. An operation ring 50 is attached.

The main body 10 has a cylindrical shape as shown in FIG. 5, and has a large-diameter hole 11, a medium-diameter hole 12, and a small-diameter hole 13 as shown in the sectional view of FIG. Through hole 1 consisting of
4 Outer peripheral portion on the mouth side of the small-diameter hole portion 13 (main body 1
0) is a connection port 15 of a socket 121 (see FIG. 10) described later, and an insertion groove 15A of a steel ball 124 of the socket 121 is recessed around the connection port 15. The inside of the large-diameter hole 11 on the side of the mouth (the other end of the main body 10) is an insertion port 16 of a hose end 102 for supplying gas.

A safety valve 30 for opening and closing the through hole 14 is inserted into the medium diameter hole 12, and a cylindrical fitting member 17 (see FIG. 7) is inserted into the deep part of the large diameter hole 13. Is being worn. The fitting member 17 is formed with a spring stopper 17A. An annular packing 25 (see FIG. 8) which is in close contact with the hose end 102 to be inserted is inserted into the mouth of the large diameter hole 11.

As shown in FIG. 9, the safety valve 30 has a cup shape having a closed surface 31 at the distal end, and the outer peripheral recess 3 at the distal end side.
2, a ring-shaped packing 33 is inserted and a spring stopper 34 is provided on the side surface.
Is provided.

As shown in FIG. 1A, a pressing spring 35 for pressing the safety valve 30 toward the small-diameter hole 13 is interposed between the spring stopper 34 of the safety valve 30 and the spring stopper 17A of the fitting member 17. The ring-shaped packing 33 of the safety valve 30 is always pressed against the tapered step portion 13A of the small-diameter hole portion 13 by the pressing spring 35, so that the through hole 14 is closed. In addition,
When the closing surface 31 is pushed toward the large-diameter hole portion 11 by the valve push rod 127 (described later) against the push spring 35, the safety valve 30
Moves into the medium-diameter hole portion 12 so that the tapered step portion 1 is formed.
An annular gap is formed between 3A and the annular packing 33.
That is, the safety valve 30 is opened to allow the gas to flow through the through hole 14.

As shown in FIG. 5, a male screw 22 for screwing an operation ring 50 is provided on the large-diameter peripheral portion 20 on the outer peripheral surface of the main body 10.
A is provided, and a stopper 23 for stopping screwing of the operation ring 50 is protruded from an inner outer periphery of the male screw 22A. The insertion opening 16 side of the main body 10 is a small-diameter peripheral portion 21 to which the retainer 40 is attached.

A retainer 40 is provided at the back of the small-diameter peripheral portion 21.
A fitting groove 21A into which the fixing portion 41 is inserted is provided.

As shown in FIGS. 4 (a), 4 (b) and 4 (c), the retainer 40 has a fixing portion 41 and an annular portion 42 fixed to the fitting groove 21A, and a locking claw 44 having a radial cut 43. ,
Tapered portion 45 for bending locking claw 44 radially inward
And are integrally formed of a flexible material. As shown in FIG. 1A, the retainer 40 is
4 in a state of projecting outward from the end of the main body 10,
The fixing portion 41 is disposed on the outer periphery of the small-diameter peripheral portion 21, and is fixed to the fitting groove 2.
It is fixed in a state inserted in 1A.

As shown in FIGS. 1A and 2, an operation ring 50 is screwed into the male screw of the large diameter peripheral portion 20 (see the screwing portion 22). The screw portion 22 is a male screw 22A of the large-diameter peripheral portion 20.
And an internal thread 50 </ b> A on the inner periphery of the operation ring 50. The operation ring 50 can be moved forward and backward with respect to the main body 10.

As shown in FIG. 1A, the operation ring 50
(The retainer 40 side) is the tapered portion 4 of the retainer 40.
5, the tapered portion 45 is pressed down, and the locking claw 44 is formed into an inclined pressing piece 51 for bending the locking claw 44 inward in the radial direction. The end of the operation ring 50 on the side opposite to the pressing piece 51 is
The contact end portion 52 contacts the stopper 23 of the main body 10.

As shown in FIG.
Reference numeral 02 denotes a structure formed so as to protrude from the gas stopper 101 so that gas is supplied (discharged) from the mouth of the hose end 102 by opening the opening / closing cock 103, and gas supply is stopped by closing the opening / closing cock 103. Have been. The hose end 102 has a plurality of small-diameter outer peripheral grooves 102A formed between the bulging portions 102B.

As the socket 121, a conventional product can be used. As shown in FIG. 10, the socket 121 has a connection portion 122 of the rubber tube 131 and a fitting hole 1 into which the connection tool 1 is inserted.
23 and the insertion groove 1 of the connector 1 mounted in the fitting hole 123.
The steel ball 124 engaging with the 5A, the regulating sleeve 125 for regulating the movement of the steel ball 124, and the spring 126 for urging the regulating sleeve 125 are mainly constituted. In addition, the socket 121 has a valve push rod 127 for pushing the safety valve 30 of the connector 1 to open the flow path. Socket 121
The rubber tube 131 is connected to the connection part 122 of the.

Now, the operating ring 50 of the connecting device 1 has the contact end 52 abutted against the stopper 23 of the main body 10 and the tapered portion 45 of the retainer 40 is free.
Is fully open. Thus, the attachment of the connecting tool 1 to the hose end 102 is performed by inserting the insertion port 16 of the main body 10 to the vicinity of the root of the hose end 102,
Positioning is performed such that the locking claw 44 of the retainer 40 is positioned in a predetermined outer circumferential groove 102A of the hose end 102. In this state, the connection tool 1 and the hose end 102 are brought into close contact with each other by the annular packing 25 of the insertion port 16.

Next, the operating ring 50 is screwed toward the tapered portion 45 while the connector 1 is appropriately held, and the tapered portion 45 is sequentially pressed by the pressing piece 51. Tapered part 4
5 is pressed, the locking claw 44 is inserted into the insertion slot 16.
Radially inward of the outer peripheral groove 10 of the hose end 102.
Dig into 2A. If the tip of the locking claw 44 is displaced from the positioned outer peripheral groove 102A during the process of pressing the locking claw 44, the operation ring 50 is returned, and the insertion amount of the connecting tool 1 into the hose end 102 is adjusted.

The locking claw 44 is pressed evenly from the entire periphery of the outer peripheral groove 102A of the hose end 102 so as to bite it.
The connection tool 1 is firmly fixed to the hose end 102. The connecting device 1 is provided with an operating ring 5 before the end of the retainer 40.
0 does not protrude and the entire length L3 of the connector 1 does not change, so that it can be inserted up to the root of the hose end 102, and the locking claw 44 can be easily positioned, which is convenient.

Thereafter, the fitting hole 123 of the socket 121 to which the rubber tube 131 is connected is fitted into the connecting port 15 of the connecting tool 1 attached to the hose end 102. That is,
As shown in FIG. 17, by inserting the socket 121 into the connection port 15 of the connection tool 1, each steel ball 124 on the inner peripheral portion of the fitting hole 123 is fitted into the insertion groove 15A of the connection port 15 of the connection tool 1. The steel ball 124 is fixed by the sleeve 125 urged by the action of the spring 126. Further, the valve push rod 127 of the socket 121 pushes the safety valve 30 of the connector 1 by the insertion, a gas flow path is formed on the outer periphery of the safety valve 30, and the gas in the gas pipe can be circulated by opening the cock 103.

The opening and closing cock 10 of the gas stopper 101
By opening 3, the gas released from the mouth of the hose end 102 can be sent into the rubber tube 131 via the connector 1 and the socket 121. The connector 1 insertion port 15 and the hose end 102 and the connection port 15 of the connector 1
Since the fitting hole 112 of the socket 121 and the connecting portion 122 of the socket 121 and the gas pipe 131 are all tightly fixed, no gas leaks from these portions.

On the other hand, when it is desired to remove the rubber tube 131, the rubber tube 131 together with the socket 121 can be easily removed from the connector 1. Since the valve push rod 127 of the socket 121 is removed from the connector 1 when the socket 121 is removed, the safety valve 30 closes the through hole 14 and gas is not released. As shown in FIG. 18, by returning the regulating sleeve 125 urged by the spring 126, the outside of the steel ball 124 becomes free, and the valve push rod 127 moves forward and the steel ball 12
4 is pushed up from below, the insertion groove 15 </ b> A on the outer periphery of the connection port 1 of the connection tool 1 becomes free, and the socket 121 is removed from the connection tool 1. The connection device 1 from which the socket 121 has come off is the safety valve 30.
Closes the gas flow path.

Although the connecting device 1 is attached to and detached from the socket 121 to which the rubber tube 131 is connected, depending on the fluid used, the rubber tube 131 may have a structure in which the push spring and the safety valve are omitted. It can be directly inserted into the connection port 15 of the fitting 1 and used to attach and detach the connecting fitting 1 with the rubber tube inserted thereto and the hose end 102 (see FIG. 11). In such a case, there is an advantage that the structure of the connection tool can be simplified and a socket need not be used.

In the above-described embodiment, the connector 1 is connected to the hose end 102 of the gas stopper 101, and the gas is passed through the rubber tube 131 via the connector 1. The present invention is not limited to the case where gas is circulated, and can be widely used as a connector for fluid such as water. For example, water taps (faucet with outer circumferential groove)
Water can flow through the rubber pipe by connecting the connection tool to the connection pipe.

The hose end 1 for attaching the connecting tool 1
02 is not limited to the structure shown in FIG. 1 (b), but may be a hose end 201 for a reinforced gas hose having an increased number of outer peripheral grooves 201A in the outer peripheral portion as shown in FIG. 12 (a). As shown in FIG. 12 (b), the present invention can be applied to a hose end 301 having an outer peripheral groove 301A and having a safety valve 30A.

[0037]

According to the connecting device of the first aspect of the present invention, it is easy to insert the hose by aligning it with the outer peripheral groove of the hose end for supplying the fluid, and it does not come off after the insertion. Tightening or removing to the hose end can be performed by screwing the operation ring,
It does not require any tightening tools and is easy to operate.

According to the second aspect of the present invention, the inserted hose end is brought into close contact with the connector body by the contact means so that no fluid leaks.

According to the third aspect of the present invention, the gas on the gas stopper side can be circulated through the rubber tube via the connector and the socket by connecting to the hose end for the gas stopper.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a connector according to an embodiment of the present invention, and FIG. 1B is a shape diagram mainly including a gas stopper hose end.

FIG. 2 is a side view of the connection device.

3A is a front view of the connection tool, and FIG. 3B is a rear view of the connection tool.

FIG. 4A is a side view of a retainer of the connection tool, and FIG. 4B is a front view of the retainer. FIG. 4C is a cross-sectional view taken along line IV-IV of FIG.

FIG. 5 is a side view of the connector main body.

FIG. 6 is a half sectional view of a connection tool operation ring.

FIG. 7 is a half sectional view of a fitting member in the connection tool.

FIG. 8 is a half sectional view of an annular packing in the connecting device.

FIG. 9 is a half sectional view of a safety valve in the connecting device.

FIG. 10 is an explanatory diagram of a connection tool use state.

FIG. 11 is a diagram illustrating a use state of another example of the connection tool.

FIG. 12A is a cross-sectional view showing the shape of another example of a hose end. (B) is a sectional view showing the shape of a further alternative hose end.

FIG. 13 is an external view of a conventional hose end connector and a gas stopper portion for simplified connection.

FIG. 14 is a diagram showing the shape of a conventional connector.

FIG. 15 is a shape view of another conventional connector.

FIG. 16A is a cross-sectional view of a conventional improved hose end connector, and FIG. 16B is a cross-sectional view showing a connection state of the same with the hose end.

FIG. 17 is a sectional structural view of a connected socket.

FIG. 18 is an operation diagram when the connected socket is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A Connection tool 10 Main body 14 Through hole 15 Connection port 16 Insertion port 22 Threaded portion 30 Safety valve 40 Retainer 44 Locking claw 45 Tapered portion 50 Operating ring 51 Pressing piece 102 Hose end 102A Outer peripheral groove 121 Socket 131 Rubber tube

Continued on the front page (72) Inventor Masatoshi Harada 1 Tochi-machi, Haruki, Togo-cho, Aichi-gun, Aichi Prefecture Inside Togo Seisakusho Co., Ltd. (72) Inventor Toshiaki Hojo 19-18, Sakuradacho, Atsuta-ku, Nagoya City, Aichi Prefecture F term (for reference) 3J106 AB01 BA01 BB01 BC04 BC12 BD03 BE12 BE29 CA16 EA03 EB02 EC01 EC07 ED03 ED04 EE12 EF04 EF05 EF07 GA01 GA04 GA11 GA23

Claims (3)

[Claims] 1. A cylindrical body having a connection port of a connection pipe at one end and an insertion port of a hose end for supplying a fluid at the other end as a main body, wherein the insertion port has an end at an end thereof. A fixing portion fixed to the main body, a locking portion that is elastically deformable and can be fitted into the outer peripheral groove of the hose end when elastically deformed inward in the radial direction of the body, and a taper that flexes the locking portion radially inward. A retainer having a portion is provided, and the outer peripheral surface of the main body is screwably screwed to the outer peripheral surface,
An operating ring having a pressing piece that abuts on the tapered portion of the retainer and deflects the locking portion radially inward is attached. 2. The connecting device according to claim 1, wherein a contact structure is formed in the insertion opening of the hose end so as to be in close contact with the outer periphery of the inserted hose end. 3. The connection pipe according to claim 1, wherein the connection pipe is a rubber pipe for gas to which a connection socket is attached, and a hose end is provided on a gas stopper for supplying gas.
A connection member for a gas plug, wherein a safety valve structure is incorporated in the main body, wherein a valve is opened when a rubber tube socket is connected to a connection port, and the valve is closed when the socket is removed. .