JPH0620956Y2 - Fluid circuit connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use] The present invention relates to a fluid circuit connector, particularly to a connector that can be used in any of a water circuit, a gas circuit and a hot water supply circuit. Further, the end of the upstream side pipe is opened on the wall surface, the floor surface, etc. so that the downstream side pipe can be connected thereto if necessary.

[Prior Art and Problems Thereof] There is a so-called box cock as a connector of the type in which the terminal of the upstream side pipe is opened to the floor surface or the wall surface. It is disclosed in the publication.

As shown in Fig. 6, this gas box cock connects a gas circuit with a one-touch coupling type connector using a gas pipe connector, and a gas cock built into the box cock body opens and closes the connected gas circuit. To do. And, to this conventional box cock, the removal mechanism of the socket (S) which is one of the gas pipe connector (consisting of the plug (P) and the socket (S)) and this socket (S) are connected. Unless otherwise specified, a safety device is incorporated that prevents the gas cock's closure (1) from being opened and rotated.

Therefore, it is possible to prevent an erroneous operation such as opening and rotating the closing member (1) without connecting the socket (S), and after closing and rotating the closing member (1) by the operating portion, By performing certain operations while maintaining
(S) can be removed.

However, in this conventional one, since a so-called closed-type rotary valve that uses the closure (1) is adopted as the circuit opening / closing valve, it is effective as a connector for a gas circuit. However, it cannot be used for water circuit and refueling circuit.

This is because the sealing grease used for ensuring the airtightness of the sliding portion of the closure (1) easily flows out into the water circuit or the hot water supply circuit, and the airtightness of the rotary valve cannot be sufficiently reliable.

The present invention has been made in view of the above points, and an object thereof is to ensure that the durability of the airtightness is sufficient and the circuit connecting portion is surely used regardless of which circuit is used. To do.

[Technical Means] The technical means of the present invention taken in order to achieve the above-mentioned object is, “A valve body (10) having a circuit opening / closing valve is provided in a box (B) arranged on a wall surface or a floor surface. In a fluid circuit connecting device that is housed and connected to the other open end of the valve body (10) on the downstream side, the circuit opening / closing valve in the valve body (10) is a ball valve (11). At the same time, the downstream open end of the valve body (10) is used as the female part (2) for circuit connection,
The upstream end of the downstream circuit connected to the valve body (10) is used as the circuit connecting male tool (3), and the circuit connecting male tool (3) is inserted into the circuit connecting female part (2). The insertion tube portion (31) is provided, and at the base end portion of the insertion tube portion (31) is provided a rotatable tube (32). An engaging recess (33) is formed on the outer periphery, and the other female part (2) for circuit connection is provided with a holding cylinder (21) that rotates relative to the valve body (10) by a certain angle. A ball (22) having a diameter larger than this thickness is accommodated within the thickness of the holding cylinder (21), and the accommodating position of this ball (22) is set to the circuit connecting male tool (3).
Of the holding cylinder (21) is fitted with the first cam portion (4), and the ball (22) is held at the initial position of the holding cylinder (21). Hold the ball (22) in the position where the ball (22) is immersed in (21) and out of the initial position.
The first cam portion (4) and the ball (22) are paired so as to partially project from the inner peripheral surface of the (21), and the holding cylinder (2
Rotate the holding cylinder (21) from the initial position of 1) to the final position so that the holding cylinder (21) is pushed for a certain stroke.
The protrusion (23) provided on (10) and the second cam portion (5) provided on the outer circumference of the holding cylinder (21) are screw-paired to each other, and the rotation cylinder (32) and the holding cylinder (21) are connected. The phases of the insertion tube portion (31) are engaged with each other such that they cannot rotate relative to each other, and the distal end portion of the insertion tube portion (31) is tightly fitted in the connection port portion (24) provided in the female portion (2) for circuit connection. " That is.

[Operation] The technical means of the present invention operates as follows.

Insert the insertion tube (31) into the connection port (24) of the valve body (10), fit the male part (3) for circuit connection into the female part (2) for circuit connection, and then hold it. When the tube (21) and the rotating tube (32) are engaged with each other, the insertion tube portion (31) and the holding tube (21) are both in the initial position, and in this state, the position of the engaging recess (33) is the ball. (2
It corresponds to the position of 2). Then, from this state, when the rotating cylinder (32) is rotated by a certain angle, the balls (22)
Are pushed inward by a pair with the first cam portion (4), and a part of the ball (22) partially projects from the inner peripheral wall of the holding cylinder (21). As a result, the holding cylinder (21) and the rotating cylinder (32) are engaged with each other in the retaining state via the balls (22).

At the same time, when the holding cylinder (21) is rotated, the holding cylinder (21)
The rotation cylinder (32) is pushed in by a constant stroke by the screw pair of the second cam portion (5) provided in the above and the projection (23) provided on the female portion (2) for circuit connection. By this pushing, the insertion tube part (31) is pushed into the connection port part (24), and the insertion tube part (31) is tightly fitted in the connection port part (24).

Then, rotate the ball valve (11) and the valve body
The circuit inside (10) is in communication, and the circuit inside the valve body (10) and the circuit on the downstream side are connected by the connection between the male part (3) for circuit connection and the female part (2) for circuit connection. The Rukoto.

[Effects] The present invention having the above-described configuration has the following unique effects.

As a circuit on-off valve in the valve body (10), a ball valve
Since (11) is adopted, it does not require sealing grease and can be used in any of the gas circuit, water circuit and hot water supply circuit.

The male part for circuit connection (3) mechanically engages the female part for circuit connection (2) through the ball (22) in a mechanically retained state so that the male part for circuit connection (3) can be easily removed. I have no worries.

Furthermore, since the insertion tube portion (31) is pushed by a certain stroke by the rotation of the rotation tube (32), the connection port portion (24) and the insertion tube portion (3
The airtightness of the connection part with 1) is further improved, and leakage from this connection part does not occur.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to FIGS.

In the apparatus of this embodiment, as shown in FIGS. 1 and 2, a ball valve (11), a circuit connecting male member (3), and a circuit connecting female portion (2).
There is a safety mechanism that prevents the ball valve (11) from opening and rotating unless a connecting mechanism for connecting it to the rail, a mechanism for pushing the insertion tube portion (31) by a certain stroke, and a male member for circuit connection (3) are connected. It has been incorporated. Each of these parts will be described in detail below.

First, an L-shaped circuit is formed in the valve body (10), the downstream end is opened to the upper surface of the valve body (10), and this open portion serves as a circuit connecting female portion (2). Become. The ball valve (11) is inserted into the horizontal circuit portion of the circuit so that its operation shaft projects upward, and the operation lever (12) is attached to the upper end of this shaft. The ball valve (11) is a pair of annular pressure-contact seal bodies provided in the circuit of the valve body (10).
It is sandwiched by (18) and (18), which ensures the airtightness of the portion where the ball valve (11) is inserted.

Next, the connecting mechanism will be described.

In this embodiment, an elastic packing plug (P) is continuously provided at the tip of the insertion tube portion (31), and this plug (P) is formed in the female portion (2) for circuit connection and the connection port portion (24) is formed. The sealing surface (25) at the lower end of the insertion tube portion (31) is in contact with the sealing surface (25).
The ring is installed.

Further, a rotary cylinder (32) is rotatably fitted over the O-ring mounting portion, and an engaging recess is formed at a lower end of the rotary cylinder (32).
An annular groove having an arcuate cross section is formed as (33). A pair of protrusions (35) and (35) are formed in the upper region of the engagement recess (33). Further, a pair of operation parts (34), (34) protruding in the radial direction are provided on the upper end of the rotating cylinder (32).
Is formed, and this functions as an operation handle for rotating the rotating cylinder (32).

Next, the holding cylinder (21) into which the rotating cylinder (32) is inserted and held is provided so as to be vertically movable so that a lower end portion of the holding cylinder (21) partially fits into the cylinder portion (26) forming the connection opening (24). And is located on the open end side of the female portion (2) for circuit connection formed in the valve body (10). Further, the holding cylinder (21) is biased in the upward direction by the spring (27), and the maximum raised position thereof is set constant by the stopper socket (S) provided in the valve body (10). Further, as shown in FIG. 4, the upper ends of the holding cylinders (21) are engaged with the recesses (28), (28) which engage with the protrusions (35).
Are formed. As a result, when the protruding portion (35) of the circuit connecting male tool (3) is fitted into the engaging recesses (28), (28),
The rotating cylinder (32) and the holding cylinder (21) are engaged with each other so as to rotate integrally.

In this embodiment, the rotation angle range of the holding cylinder (21) is set to 90 degrees, and as shown in FIG. 3, a partial recess (41) is formed on the inner wall of the accommodating portion of the holding cylinder (21). Formed and already described first cam part (4)
In the initial position of the holding cylinder (21) (position in which the male member for circuit connection (3) is not connected), the recesses (41), (4
The arrangement position of the recess (41) is set so that (1) faces (matches) the balls (22), (22) provided in the holding cylinder (21). Therefore, as shown in (B) of the same figure, in the initial position, the recesses (41) are located on the outer peripheral side of each ball (22), and the rotating cylinder (32) is placed in the holding cylinder (21). Even if the ball (22) partially protrudes from the inner peripheral wall of the holding cylinder (21) when inserting, the ball (22) is pushed toward the outer peripheral side by the insertion, and the rotation cylinder (32) is inserted. Is possible.

Therefore, as described above, when the rotary cylinder (32) is inserted into the holding cylinder (21), the distal end of the insertion cylinder (31) is tightly fitted to the connection port (24) and the plug (P). Is pressed against the sealing surface (25). Also, the balls (22) provided in the holding cylinder (21) are engaged with the recessed portion.
(33) It corresponds to the annular groove. Therefore,
When the operation portions (34), (34) are rotated while maintaining this state, the rotation cylinder (32) and the holding cylinder (21) are engaged due to the engagement between the engagement recess (28) and the protrusion (35). ) And rotate together. At the initial stage of this rotation, the balls (22) are located outside the recesses (41), (41), which causes the balls (22), (22) to project to the inner peripheral side of the holding cylinder (21). As a result, the balls (22) project into the engaging recesses (33). After that, in the state where the rotating tube (32) is rotated by a certain angle, the retaining state is maintained as shown in (A) of the figure.

Next, a mechanism for pushing in the circuit connecting male tool (3) by a constant stroke will be described.

In order to realize this mechanism, the second cam (5) is provided on the outer peripheral surface of the holding cylinder (21) at a position deviated from the portion accommodating the balls (22).
Arc shaped cam grooves (50), (50) are formed, and the bottom surfaces of the cam grooves (50), (50) are, as shown in FIG. The structure is provided with an inclined surface (51) that rises along the rotation direction (counterclockwise rotation in the figure). Then, the projections (23) are arranged on the inner peripheral wall of the female portion (2) for circuit connection where the cam grooves (50), (50) face each other, and each projection (23) is formed by the cam grooves (50), (50 ) Projected in In particular, in this embodiment, as shown in FIG. 3, the disposition sections of the cam grooves (50), (50) are set at a predetermined angle, so that the projection (23) is formed on the cam groove (50), The rotation range from the state in which it is in contact with one end of the arrangement section of (50) to the state in which it is in contact with the other end is the holding cylinder (21).
The rotation angle becomes, and this angle becomes the above 90 degrees. Therefore, it is not necessary to separately provide a rotation angle regulating means for the insertion tube portion (31).

Next, the safety device will be described.

A mover (13) is provided between the circuit connecting male tool (3) and the valve shaft of the ball valve (11), and the moving direction of the mover (13) is connected to the valve shaft by the circuit. A cam body which is set in a direction along the line connecting the female use portion (2), faces the outer peripheral surface of the holding cylinder (21) at one end, and has the other end on the valve shaft of the ball valve (11).
It is opened at (14). The end of the mover (13) on the holding cylinder (21) side is fitted into the end of the cam grooves (50), (50) at the final rotation position of the holding cylinder (21). . The cam body (14) has a structure in which an engaging recess (15) is formed on a part of the outer peripheral surface thereof, and when the ball valve (11) is in the fully closed state, the engaging recess (15) is formed. Are opposed to the ends of the mover (13).

Therefore, when the holding cylinder (21) is in the initial state ((A) in FIG. 3), one end of the mover (13) is, in plan view, the ends of the cam grooves (50), (50). This cam groove (50), (50)
The moving element (13) is moved downward to the cam body (14) side from the end of the. Then, the other end of the mover (13) is fitted in the engaging recess (15) of the cam body (14),
The cam body (14), which rotates integrally with the ball valve (11), is prevented from rotating. Then, as shown in FIG. 2, when the holding cylinder (21) is rotated together with the rotation cylinder (32) by connecting the male member (3) for circuit connection, the end of the mover (13) is in its final state. Department ((4
The mover (13) faces the end of (0) and is ready to move to the female terminal (2) for circuit connection. Therefore, in this state, the cam body (14) can be rotated and the ball valve (11) can be opened and rotated.

Further, in this state, since the moving element (13) is in a state in which the movement thereof toward the cam body (14) is blocked, the holding cylinder (21) cannot be rotated to return to the initial position. Therefore, removal of the male member (3) for circuit connection is prevented while the ball valve (11) is kept fully open. Then, when the ball valve (11) is rotated back to the fully closed position, the engaging recess (15) and the end of the mover (13) are aligned with each other, and the return rotation operation of the holding cylinder (21) is performed. That is, it is possible to remove the male component (3) for circuit connection.

In this embodiment, an automatic valve closing type valve body (36) is provided in the insertion cylinder part (31), and a shaft part (29) is projected in the center part of the circuit connecting female part (2). , This shaft part (29) to the valve body (3
It is made to face 6). Therefore, this insertion tube
When the (31) is connected to the circuit connecting female part (2), the valve body (36) is pushed in by the shaft part (29) and the valve automatically opens.

Further, in the above embodiment, the insertion tube portion (31) is provided with the plug (P) having a V-shaped cross section at the tip thereof, but this may be used as the airtight means of the metal contact structure. is there. In this case, as shown in FIG. 5, the rotating cylinder (32) and the insertion cylinder part (31) can be moved by a constant stroke in the axial direction, and the spring (37) allows the insertion cylinder part (31) to be constantly inserted. Make sure that a downward urging force acts on.

With this configuration, the tip of the insertion tube (31) is urged by the descending operation when the rotation tube (32) is rotated after connecting the circuit connecting male (3). It will be pressed in the state.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention in a non-connected state, FIG. 2 is a sectional view of a state in which a male member for circuit connection (3) is connected, and FIG. 3 is a sectional view taken along line XX. , (A) are male tools for circuit connection
The state (3) is not connected and the state (B) is connected. FIG. 4 is a perspective view of the holding cylinder (21), FIG. 5 is a cross-sectional view of a main part of another embodiment, and FIG. 6 is an explanatory view of a conventional example. ) …… Valve body (11) …… Ball valve (2) …… Female part for circuit connection (21) …… Holding tube (22) …… Ball (24) …… Connection port (3) …… Circuit connection Male tool (31) …… Insert cylinder (32) …… Rotating cylinder (33) …… Engagement recess (4) …… First cam (5) …… Second cam

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Saito Nagara 6-22-22 Nishinippori, Arakawa-ku, Tokyo Cleanup Co., Ltd. (72) Masaru Ikeda 6-22-22 Nishinippori, Arakawa-ku, Tokyo Cleanup Co., Ltd. (72) Inventor Kiyoshi Kunii 6-22-22 Nishinippori, Arakawa-ku, Tokyo Cleanup Co., Ltd. (72) Miyuki Ikeda 6-22-22 Nishinippori, Arakawa-ku, Tokyo Cleanup Within the corporation

Claims (1)

[Scope of utility model registration request] 1. A valve body (10) having a circuit opening / closing valve is housed in a box (B) arranged on a wall surface or a floor surface, and a downstream end of the valve body (10) is connected with a connector. A fluid circuit connector in which the other is connected to the valve body.
The circuit on-off valve in (10) is a ball valve (11), and the downstream open end of the valve body (10) is a female part for circuit connection.
(2), the upstream end of the downstream circuit connected to this valve body (10) is a male member for circuit connection (3), and the male member for circuit connection (3) has the female part for circuit connection ( Insertion tube part inserted in 2)
(31) is provided, and a rotatable barrel (32) is provided at the proximal end of the insertion barrel (31).
An engaging recess (33) is formed on the outer periphery of the tip end of (2), and the other female member for circuit connection (2) has a holding cylinder (21) that rotates relative to the valve body (10) by a certain angle. And a ball having a diameter larger than the wall thickness of the holding cylinder (21)
(22) is accommodated, the accommodating position of this ball (22) is adapted to the engaging recess (33) of the male member (3) for circuit connection, and the first cam is provided on the wall surface accommodating the holding cylinder (21). Part (4), holding cylinder (21)
In the initial position of the ball (22), the ball (22) is immersed in the holding tube (21), and when it is out of the initial position, the ball (2
The first cam portion (4) and the ball (22) are paired so as to partially project 2) from the inner peripheral surface of the holding cylinder (21), and further, from the initial position of the holding cylinder (21) to the final position. The holding cylinder (2) and the projection (23) provided on the valve body (10) so that the holding cylinder (21) is pushed in by a constant stroke by turning to the target position.
The second cam portion (5) provided on the outer periphery of (1) is screw-paired, and the rotation cylinder (32) and the holding cylinder (21) are engaged with each other such that they cannot rotate relative to each other and can be disengaged. Connect the tip of the part (31) to the female part for circuit connection.
(2) A fluid circuit connector adapted to be tightly fitted in the connection port (24) provided in the inside.