JPH06265078A - Socket for flexible pipe connection tool - Google Patents

Abstract

PURPOSE:To prevent the fall of a device due to a tension exerted on a flexible pipe by a method wherein an operation cylinder part having a hose connection part protruded to the downstream side is fitted in externally of a cylinder part on the outlet side slidably in an airtight manner and a working cylinder fitted in a gas plug is coupled to the operation cylinder part. CONSTITUTION:When a main cylinder 4 is forcibly fitted in externally of a plug 61, the rubber ring 31 of an auxiliary cylinder 3 is brought into contact with the end face of a plug 61 and the auxiliary cylinder 3 is pushed in. A ball 40 for a lock is caused to coincide with the annular groove 62 of the plug 61 and a taper surface 1 and a stepped part 14 are engaged with an annular recessed part 62 through the force of a spring 10. This operation causes disengagement of a working cylinder 1, resulting in movement in a protruding direction. A taper surface 13 is brought into contact with an enlarging cylinder part 46 at the tip of the main cylinder 4 to bring a socket into lock and connection with the plug 61. In this case, the working cylinder part 2 of the main cylinder 4 screw-coupled with the working cylinder 1 is also moved to the tip side of the socket and a shaft body 41, simultaneously, causes opening of an auxiliary valve 72, and a flow passage is completed in the plug 61, a cylinder part 42 on the outlet side, and a working cylinder 2 through the auxiliary cylinder 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket for a flexible tube connector such as a rubber tube.

[0002]

2. Description of the Related Art As a rubber tube connector, a one-touch coupling type having a socket and a plug is widely used. An example of this type of gas plug is shown in FIG.
As shown in FIG. 6, the plug (61) projecting from the gas plug body (6) is housed so as to be movable in the axial direction thereof and is closed by being urged toward the tip side of the plug (61) by a spring. Some have a valve body that is held in a valve state. On the other hand, the socket is a main cylinder (4) externally connected to the plug (61).
And an outlet side tube portion (42) projecting on the downstream side of the main tube (4)
And is provided on the outer periphery of the main cylinder (4) at the tip end side so that it can move back and forth.
In addition, it comprises an actuating cylinder (1) biased in the protruding direction, a shaft body (41) corresponding to the valve body, and a flow path connecting portion press-contacted to the end surface of the plug (61). is there.

In this conventional device, the socket is plugged (6
In the state where it is not attached to 1), as shown in FIG. 5, the valve body blocks the flow path in the gas plug. Then insert the main tube (4) into the plug (6
When the socket is pushed in by being fitted onto the tip of 1), the operating cylinder (1) is advanced forward by the urging force of the spring as shown in Fig. 6, and the socket is moved by the expanding operation of the operating cylinder (1). The lock mechanism inside operates so that the socket and the plug (61) are coupled to each other in a retaining state, and the valve body is pushed by the shaft body (41) to connect the flow path connecting portion and the end surface of the plug (61). Is pressed. As a result, the flow path from the plug (61) to the outlet side tubular portion (42) is in communication.

When the operating cylinder (1) is forcibly pushed from this state by a predetermined amount, the locked state of the socket and the plug (61) is released, whereby the socket is removed and the valve body is
Since the biasing force in the valve closing direction is acting, the valve closing state is restored. Usually, the socket is attached to a gas plug of the above type buried in the wall surface, and is connected to the appliance from the outlet side tube portion (42) via a rubber tube.

Therefore, when the rubber tube is hooked with a foot when the device is used, an external force acts on the socket in a direction to remove it from the plug (61), but the external force is applied to the outlet side tube portion (42). It acts on the connected main cylinder (4) and has no effect on the actuating cylinder (1).
It does not come off from 1), all the external force acts on the instrument, and the instrument may fall down.

The present invention is directed to such a "gas plug plug".
A main cylinder (4) externally fitted and connected to the (61), an outlet side cylinder part (42) protrudingly provided on the downstream side of the main cylinder (4), and an outer periphery on the tip end side of the main cylinder (4). The actuating cylinder (1) that can be moved forward and backward and is biased in the protruding direction, and the shaft that opens the valve body in the gas plug when the main cylinder (4) is fitted onto the plug (61) ( 41) and the main tube (4)
The plug (61) is equipped with a flow path connecting portion that connects the plug (61) and the outlet side tubular portion (42) to each other when fitted over the socket (61), and the socket is plugged.
When the operating cylinder (1) is extended and locked into the (61), the operating cylinder (1) is locked and when the operating cylinder (1) is pushed in, the socket can be removed from the plug (61). It is an object of the present invention to prevent the instrument from falling down even when the flexible tube is hooked with a foot in the "tool socket".

[0007]

[Technical Means] The technical means of the present invention taken to solve the above-mentioned problem is that "an operating cylinder portion (2) having a hose connecting portion (21) projecting on the downstream side is connected to the outlet side cylinder portion (2). 42) Airtightly slidably fitted on the operation tube (2) and the operation tube (1).
That's what I've linked.

[0008]

The above technical means of the present invention operates as follows. When the socket is not connected to the plug (61), the valve element in the gas plug is kept closed. In use, when the main cylinder (4) in the socket is fitted onto the plug (61) and the socket is pushed in, the working cylinder (1) fitted onto the outer periphery of the main cylinder (4) on the tip side advances and locks. It becomes a state. At this time, since the operation tube portion (2) slidably fitted on the outlet side tube portion (42) on the downstream side of the main tube (4) is connected to the operation tube (1), (1) Moves to the tip side of the socket.
Further, at this time, the shaft body (41) opens the valve body in the gas plug, and the flow passage connecting portion communicates the flow passage from the plug (61) to the outlet side tubular portion (42). In addition, since the outlet side tubular portion (42) and the operating tubular portion (2) are airtightly slidable, gas does not leak from this portion.

When the operating tube portion (2) is forcibly pulled from this state to move the operating tube portion (2) to the downstream side of the socket, the operating tube (1) moves together with the operating tube portion (2) into the socket. Is moved to the downstream side, the actuating cylinder (1) is pushed in, and the socket is disengaged from the plug (61). This allows
The valve element in the gas valve returns to the closed state.

[0010]

[Effect] The present invention having the above-mentioned structure has the following unique effects. Forcibly pulling the operation tube part (2) of the socket during use will cause the socket to come off the plug (61), so the hose connection part projecting on the downstream side of the operation tube part (2).
Even if tension is applied to the flexible tube, such as when the flexible tube connected to (21) is hooked, the device will not fall.

Particularly, in the case of the known type in which the gas stopper is built in the gas stopper body and is opened and closed synchronously by moving integrally with the valve body, even if the gas stopper is installed in a deep and narrow space. Since the connection / disconnection of the socket and the opening / closing operation of the gas plug can be performed, the restriction on the installation condition of the gas plug is significantly eased.

[0012]

EXAMPLE An example of the present invention will be described below with reference to FIGS. In this embodiment, the present invention is applied to a socket of a type having a lock ball built therein. As shown in FIG. 2, this product engages the locking ball (40) with the annular groove (62) provided in the plug (61) of the gas stopper, so that the socket and the plug (61) are separated from each other. It connects to the locked state.

As shown in the figure, the gas plug is of a type in which a sliding type plug (7) is built in, and a gas plug body (6) is provided with a plug (61) in a protruding manner. An inverted L-shaped flow path is formed from the gas inlet (63) below the gas plug body (6) to the gas outlet (64) at the tip of the plug (61), and is upstream of the gas outlet (64). On the side of the linear valve chamber (66), the stopper (7)
Is slidably accommodated. Further, a spring (70) for applying a valve closing biasing force is interposed between the plug (7) and the bottom wall (67) at the upstream end in the valve chamber (66).

The plug (61) has a known construction in which the auxiliary valve (72) is built in, and the auxiliary valve (72) is provided at the downstream end of the shaft portion (71) of the stopper (7). This plug is installed
(7) and the auxiliary valve (71) function as a valve body. That is, the auxiliary valve (72) has a valve seat (6
The plug (7) is located at the valve closed position in the valve chamber (66) when it comes into contact with (5), and blocks the gas flow path.

On the other hand, the socket, as shown in FIGS. 1 and 2, contains a main cylinder (4) which is externally fitted and connected to the plug (61). This main cylinder (4) has a small diameter outlet side cylinder at its downstream end.
(42) are connected to each other, and through holes (43) and (43) are formed in the peripheral wall near the upstream end of the holes, and a locking ball (40) is provided in each through hole (43). Hold it. Further, the shaft body (41) is located at the axial center of the main cylinder (4), and its base end portion is an extension cylinder (42a) connected to the outlet side cylinder part (42) on the upstream side. Are connected to the upstream end of. Further, a protrusion (44) is formed on the inner peripheral wall in the middle of the main cylinder (4).

On the downstream side of the main cylinder (4), a double-structured cover cylinder (5) is fitted. The cover cylinder (5) is
The inner cylinder (53) is concentrically provided inside the outer cylinder (51), and the inner cylinder (53) is connected and integrated by a plurality of connecting portions (52) (52).
Further, the actuating cylinder (1) is fitted on the main cylinder (4) and the inner cylinder (53) so as to be able to move forward and backward. A taper surface (13) and a step portion (14) following the taper surface (13) are formed on the inner peripheral wall of the end portion side of the working cylinder (1) corresponding to the upstream end of the main cylinder (4). 13) is in contact with the locking ball (40). Further, at the other end of the operating cylinder (1), notches (12) and (12) are formed corresponding to the connecting portions (52) and (52), and a female screw portion (11) is formed. There is. A spring (10) for urging the operating cylinder (1) in the protruding direction is interposed between the step (14) and the inner cylinder (53).

The operation tube portion (2) has a structure in which the hose connecting portion (21) is projected to the downstream side from a large-diameter main body portion that is fitted onto the outlet side cylinder portion (42), and the main body portion is It is slidably fitted on the outlet side tubular portion (42) via an O-ring (23). Further, a male screw portion (22) is formed on the upstream side of the operating cylinder portion (2), and the female screw portion (11) of the operating cylinder (1) inserted into the male screw portion (22) as described above. The actuating cylinder (1) is attached to the operating cylinder part (2) so that it can move back and forth by screwing.

In the main cylinder (4), a sub-cylinder (3) as a flow path connecting portion which is pressed against the end surface of the plug (61) is slidably fitted on the extension cylinder (42a). ing. The sub-cylinder (3) is
First rubber ring (31), first tubular body (32), second rubber ring
(33) and further comprises a second tubular body (34) between the second tubular body (34) and the bottom wall (45) at the downstream end of the main barrel (4). Is a spring (30) for urging the sub tube (3) in the protruding direction.
Is installed. The flange (322) at the downstream end of the first tubular body (32) is engaged with the protrusion (44). In this engaged state, the holding portion (321) at the tip of the first tubular body (32)
Seals the through holes (43) (43) from the inside, and holds the locking balls (40) so as not to escape. still,
Airtightness between the sub cylinder (3) and the extension cylinder (42a) is ensured by the second rubber ring (33).

When the socket is not connected to the plug (61), as shown in FIG. 2, the locking ball (40) held by the main cylinder (4) and the taper surface (13) of the actuating cylinder (1). And the secondary cylinder (3)
The holding portion (321) of the first tubular body (32) is in a matched state (hereinafter referred to as a non-connection state). That is, the operating cylinder
(1) is engaged with the main cylinder (4) and cannot slide.
On the other hand, in the gas plug, the spring (70) causes the auxiliary valve (72) to contact the valve seat (65) and the plug (7) to be in the closed position.

When the main cylinder (4) is fitted onto the plug (61) and the socket is pushed in, the first rubber ring (31) of the sub cylinder (3) in the socket is plugged into the plug (61) as shown in FIG. 61) and the sub-tube (3) is pushed in and the locking ball (4
0) and the annular groove (62) of the plug (61) are aligned. Then,
Actuating tube (1) that was previously engaged with the locking ball (40)
The tapered surface (13) and the stepped portion (14) following this push the locking ball (40) into the annular groove (62) by the urging force of the spring (10), whereby the engagement is released. The operating cylinder (1) moves in the protruding direction, and the tapered surface (13) of the operating cylinder (1) moves to the main cylinder.
The socket and the plug (61) are connected to each other in a locked state by being brought into contact with the enlarged cylindrical portion (46) provided on the front end side of (4).

At this time, the outlet side tube portion at the downstream end of the main tube (4)
Since the main body of the operating tube (2) slidably fitted on (42) is screwed to the operating tube (1), the operating tube (2) together with the operating tube (1) will not fit into the socket. Move to the tip side. at the same time,
The shaft (41) pushes the auxiliary valve (72) together with the stopper (7) to open the valve, and the sub-cylinder (3) is kept airtight by the first rubber ring (31) and the second rubber ring (33). In this state, the flow path from the plug (61) to the outlet side tubular portion (42) is communicated. Since the O-ring (23) is interposed between the outlet side tubular portion (42) and the main body of the operating tubular portion (2), the airtightness of this portion is secured.

From this state, when the operating tube portion (2) is forcibly pulled to move the operating tube portion (2) to the downstream side of the socket, as shown in FIG. The screw-operated cylinder (1) is moved to the downstream side of the socket. Then, the locking ball (40) is attached to the tapered surface (13) of the actuating barrel (1).
The socket is removed from the plug (61) by disengaging the locking ball (40) from the annular groove (62) in line with the larger diameter portion at the tip. As a result, the inside of the socket returns to the non-connection state as shown in FIG. On the other hand, in the gas plug, the auxiliary valve (72) and the plug (7) are returned to the closed state by the spring (70).

[Brief description of drawings]

FIG. 1 is an exploded perspective view of main parts

FIG. 2 is an explanatory diagram of an example.

FIG. 3 is an explanatory diagram when the socket is connected to the plug (61).

FIG. 4 is an explanatory view when the operation tube portion (2) of the socket is pulled from the plug (61).

FIG. 5 is an explanatory diagram of a conventional example.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 (1) ・ ・ ・ Operating cylinder (2) ・ ・ ・ Operating cylinder part (21) ・ ・ ・ Hose connection part (4) ・ ・ ・ Main cylinder (41) ・ ・ ・ Shaft body (42) ・ ・ ・ Outlet side Tube (61) -Plug

Claims (1)

[Claims] 1. A main cylinder (4) externally fitted and connected to a plug (61) of a gas plug, and an outlet-side cylinder part projecting downstream of the main cylinder (4).
(42), an actuating cylinder (1) that is provided on the outer periphery of the main cylinder (4) at the tip end side so as to be able to move forward and backward, and is biased in the protruding direction, and the main cylinder (4)
The shaft body (41) that opens the valve body inside the gas stopper when the plug is fitted onto the plug (61), and the plug (61) and the outlet side cylinder when the main cylinder (4) is fitted onto the plug (61). When the socket is fitted and connected to the plug (61), the operating cylinder (1) is advanced and locked, and the operating cylinder is in the advanced state. In the socket of the flexible tube connector in which the socket can be removed from the plug (61) by pushing in (1), the operating tube part with the hose connection part (21) protruding from the downstream side.
(2) is fitted onto the outlet side tube portion (42) in an airtight and slidable manner, and the operating tube portion (2) and the operating tube (1) are connected to each other. .