JPH0750632Y2 - Anti-dust structure of the mechanism for removing the socket for gas plugs - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field and Outline of the Invention] The present invention relates to a mechanism for removing a one-touch coupling type socket connected to a gas plug (hereinafter referred to as a socket removal mechanism), in particular, The present invention relates to the dustproof structure, which reduces the intrusion of dust and the like into the socket removal mechanism, thereby stabilizing the smooth operation of the socket removal mechanism for a long period of time.

[Prior Art and Problem] As a gas plug of a type that is buried in a wall surface so as not to get in the way, for example, there is one described in Japanese Utility Model Laid-Open No. 1-169692.

As shown in FIG. 8 and FIG. 9, this one has a plug (3) which accommodates an on-off valve and the like inside, a casing (6) which accommodates the same, and a socket (S) which is further connected to the plug. It is composed of a socket removing mechanism (A) for removing from (3).

The socket removing mechanism (A) includes a swing arm (1) (1) pivotally supported on the outer wall of the plug (3) by a support shaft (31),
An operating tube (20) for pushing the input end of the swing arm (1) (1), and further, abutting the output end of the swing arm (1) (1) from the plug tip direction and the plug (3). An auxiliary ring (26) is arranged to surround the outer circumference of the base end of the.

In this case, as shown by the imaginary line in the figure, when a one-touch coupling type socket (S) is fitted onto the tip of the plug (3) and pushed into the casing (6), a lock (not shown) is obtained. The mechanism operates so that the socket (S) and the plug (3) are coupled to each other in a retaining state.

On the other hand, during the operation of the lock mechanism, the advancing / retreating cylinder (S1) provided at the tip of the plug (S) is moved forward by the urging force of a spring (not shown), whereby the outer periphery of the proximal end of the plug (3) is moved. The auxiliary ring (26) arranged at the rear side is pushed rearward (upstream side of the plug (3)). Then, the swing arm (1) (1) swings because the output end thereof is pushed by the auxiliary ring (26), and the input end of the swing arm (1) (1) swings the operating cylinder (20). ) Is pushed forward to the socket connection state shown in FIG.

Next, when the operating cylinder (20) is pushed into the casing (6) in the above-mentioned connected state, this pushing force causes the swing arms (1) (1) to swing in the opposite direction to that when the socket is connected and , The auxiliary ring (26) on the outer periphery of the plug is pushed by the output end of the swing arm (1) (1), and the auxiliary ring (2
6) pushes the forward / backward moving cylinder (S1) at the tip of the socket into the socket (S). As a result, the locked state of the coupled socket (S) and plug (3) is released, the socket (S) is removed from the plug (3), and the initial state shown in FIG. 8 is restored.

And in this thing, since the socket (S) can be removed only by pushing in the operation tube (20) projecting to the front of the casing (6), as shown by the phantom lines in FIGS. 8 and 9, the casing (S) can be removed. Even when 6) is used by being embedded in the wall surface, there is an advantage that the socket (S) can be easily removed.

However, in the conventional device described above, when the socket is not connected, the plug (3) is exposed in the operation tube (20), and therefore dust or the like enters the operation tube (20). Cannot be prevented, and the dust constitutes the socket removal mechanism (A). The pivot shaft (31) of the swing arm (1) (1).
It adheres to a portion or the like and becomes a cause of hindering the smooth swing of the swing arms (1) (1). From this, in the above-mentioned conventional one, the socket removing mechanism (A) is used by long-term use.
However, there is a problem in that it becomes difficult to attach and detach the socket (S) with the passage of time.

The present invention has been made in view of the above point, and the "swing arm (1) (1) disposed on the outer peripheral portion of the plug (3)"
An auxiliary ring (26) arranged so as to surround the outer periphery of the plug (3) and abutting the output end of the swing arm (1) (1) from the plug tip side, and the auxiliary ring (2)
6) Enclosing the 6) and pushing the input end of the swing arm (1) (1) toward the proximal end of the plug to swing the operating cylinder (20). In order to ensure the smooth operation of the socket removing mechanism (A) for a long period of time, it is necessary to prevent dust and the like from entering the operation tube (20) that houses the socket removing mechanism (A). It is an issue.

[Means] The technical means of the present invention for solving the above-mentioned problem is a member which is provided on the inner peripheral surface of the operation tube (20) so as to project therefrom and at a position corresponding to the tip of the plug (3). The engaging collar (23), the annular lid (25) whose outer peripheral edge engages with the engaging collar (23) and which is loosely inserted into the plug (3), and the outer periphery of the proximal end portion of the plug (3). A compression spring (24) is provided between the surrounding auxiliary ring (26) and the annular lid (25), and the urging force of the compression spring (24) is advanced by the forward / backward movement cylinder (S1) of the socket (S). It was set so that it could be compressed by force. ”

[Operation] The above technical means operates as follows.

In the socket unconnected state, the annular lid (25) externally fitted to the plug (3) is urged toward the plug tip side by the compression spring (24), and the outer periphery of the annular lid (25). Is engaged with an engaging collar (23) projectingly provided on the inner circumference of the operating cylinder (20) and is prevented from coming out forward.

Since the engagement brim (23) on the inner circumference of the operation tube (20) is located at a portion corresponding to the tip of the plug (3), the annular lid (25) has the tip of the plug (3). The gap formed between the outer peripheral surface of the portion and the operating cylinder (20) facing the outer peripheral surface is closed.

That is, the operation tube (20) provided with the socket removing mechanism (A) and the like by the annular lid (25) closing the gap between the outer circumference of the tip of the plug (3) and the inner circumference of the operation tube (20) facing the plug. The inside of the) is prevented from entering.

Next, the attachment / detachment operation of the socket will be described.

As with the conventional one, when the socket (S) is inserted into the plug (3) and pushed in, the socket (S)
The compression spring (24) is compressed according to the pushing stroke of the. When the socket (S) and the plug (3) are locked, the advancing / retreating cylinder (S1) advances a certain stroke as described above, but the biasing force of the compression spring (24) causes the advancing / retreating cylinder (S1) of the socket (S) to move forward and backward ( Since it is set weaker than the progressive output of (S1),
The annular lid (25) causes the compression spring (24) to be compressed by the advancement of the advancing / retreating cylinder (S1) and at the same time the retaining ring (26) is pushed in. After that, the swinging arm ( 1) (1) swings and the operating cylinder (20) that is in contact with its input end is advanced to enter the socket connection state. Further, when removing the socket in this state, the operation tube (20) is pushed in the direction of the base end portion of the plug as in the conventional one. Then, the swing arms (1) (1), the auxiliary ring (26), and further the annular lid (25) and the like sequentially operate in the reverse order of the above socket connection, and the annular lid (25) causes the socket (S) to move. The advancing / retreating cylinder (S1) is pushed and can be removed.

[Effect] The present invention has the following unique effects.

The annular lid (25) can prevent dust and the like from entering the operating cylinder (20) when the socket is not connected. Therefore, dust on the pivotal support of the swinging arms (1) (1) provided at the back of the barrel can be prevented. Adhesion of the rocking arm (1) is suppressed, and thereby, the swing arm (1)
The smooth operation of the socket removing mechanism (A) including (1) can be ensured for a long period of time.

[Embodiment] Next, an embodiment of the present invention described above will be described with reference to the drawings.

The gas plug shown in FIG. 1 includes a gas plug body (8), a casing (6) for containing the gas plug body, and a socket removing mechanism (A) surrounding the plug (3) projecting from the gas plug body (8). ). Further, a decorative frame (B), which is used when the gas plug is arranged on the wall surface, is arranged on the front surface of the gas plug configured as described above.

As shown in FIG. 2, the casing (6) is composed of a cylindrical tube that opens forward, and the side wall of the casing (6) further has an opening / closing window for inserting the gas stopper body (8). (61) is formed. The gas plug body (8) is fixed to the back wall (62) of the casing (6) with screws (82), and the plug (3) protruding from the gas plug body (8) is the casing (6). It is located concentrically with.

Next, the socket removing mechanism (A) mounted on the casing (6) is configured as shown in FIGS. 2 and 3, and the shaft is attached to the inner wall of the outer cylinder (5) whose both ends are open. (11)
A semicircular swing arm (1) (1) supported by is attached to the swing arm (1) (1) in a crossed state. 20) is installed. The operating cylinder (20) is pushed inward of the outer cylinder (5) by the spring (67) seated on the inner collar (66) screwed into the tip of the outer cylinder (5). Is urged by.

An engagement flange (23) is provided around the inner periphery of the tip of the operation cylinder (20), and a compression spring (24) is provided on the inner surface of the engagement flange (23).
The outer peripheral edge of the annular lid (25) that is biased forward by is engaged. The other end of the compression spring (24) has an auxiliary ring (2) housed in a large-diameter portion formed at the rear end of the operating cylinder (20).
It is in contact with 6). And the auxiliary ring (26)
As shown in FIG. 4, the outer cylinder (5) is attached by the shaft (11).
Swing arm (1) (1) swingably arranged on the inner peripheral wall of the
Of the swing arm (1) located on the opposite side of the projection (12) is in contact with the rear end of the operation tube (20). ing.

Here, the biasing force of the compression spring (24) is set weak,
It is only compressed by the forward output of the forward / backward moving cylinder (S1) of the socket (S) (the forward output obtained by a spring (not shown) loaded in the socket). In the most compressed state, it is a ring for dust prevention. The lid (25) and the auxiliary ring (26) are in contact with each other. Therefore, the annular lid (2
5) The compression spring (24) is housed in an annular groove formed on the mutually opposing surfaces of the auxiliary ring (26), and the sum of the depths of these annular grooves is the strand of the compression spring (24). It is deeper than the spring length in the close contact state.

The gas stopper main body (8) is housed and fixed in the casing (6), and the socket removing mechanism (A) assembled at the open end of the casing (6) is inserted to the center of the socket removing mechanism (A). Set so that the plug (3) of the gas stopper main body (8) is located in the part. Then, in this state, a screw (not shown) is inserted into the through hole (58) of the mounting plate (59) protruding from the outer cylinder (5) of the socket removal mechanism (A), and the screw is attached to the casing (6) side. Is screwed into a screw hole (not shown), thereby fixing the socket removing mechanism (A) to the casing (6). As a result, the gas plug according to the embodiment of the present invention is completed.

As shown in FIG. 1, the completed gas plug is housed and disposed in a recess (W1) formed in an indoor wall surface (W), and
The decorative plate (B) is arranged on the front surface for use.

In this state, as shown in the figure, the gap between the operation cylinder (20) and the tip of the plug (3) located on the central axis of the operation cylinder (20) is closed by the annular lid (25). As a result, it becomes difficult for dust and the like to enter the operation tube (20) through the inside of the operation tube (20) to the socket removal mechanism (A) side. As a result, the smooth operation of the socket removing mechanism becomes stable over a long period of time.

Now, in the state of FIG. 1, when the socket (S) is externally inserted into the plug (3) and pushed in, the forward / backward movement cylinder (S1) of the socket (S) resists the urging force of the compression spring (24). Push in the annular lid (25) so that it comes into contact with the auxiliary ring (26),
The annular lid (25) and the auxiliary ring (26) are integrated to push in the projection (12) at the input end of the swing arm (1) (1). As a result, the swing arm (1) (1) is swung, and the operating cylinder (20) that is in contact with the output end of the swing arm (1) (1) is pushed forward to move the fifth arm. The socket connection shown in the figure is entered.

Next, to remove the connected socket (S),
In the illustrated state, the operation tube (20) protruding forward may be pushed inward. Then, the swinging arm (1) is swung in the initial direction by the back end surface of the operation tube (20), and thereby the auxiliary ring (26) and the annular lid (25) are pushed forward. Then, the advance / retreat cylinder (S1) of the socket (S) is pushed by the annular lid (25), and the socket (S) is removed.

In the embodiment described above, when the socket is connected, the annular lid (25) and the auxiliary ring (26) facing the annular lid (26) are brought into contact with each other and moved to the rear of the plug. The element wire of the compression spring (24) may be in close contact with each other without the contact of the auxiliary ring (26) with the annular ring (25) and the auxiliary ring (26).

In the second embodiment shown in FIG. 6, a relatively long guide tube portion (29) is continuously provided on the inner circumference of the annular lid (25).
In this case, due to the presence of the guide inner tubular portion (29),
Since the contact area between the plug (3) and the annular lid (25) increases, it becomes difficult for the annular lid (25) moving along the plug (3) to tilt, and thus the posture of the annular lid (25). Can be stabilized.

In the third embodiment shown in FIG. 7, a bellows tube (28) integrally formed with the annular lid (25) is continuously provided on the inner circumference of the annular lid (25), and the tip of the bellows tube (28) is assisted. The ring (26) is fixedly engaged with the inner circumference of the ring (26), and even in this case, the same dustproof operation as that of each of the above-described embodiments is performed.

[Brief description of drawings]

FIG. 1 is an explanatory view of the usage state of the gas plug according to the embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional view showing a state in which the casing (6) and the socket removing mechanism (A) are separated, FIG. 3 is an exploded perspective view of the socket removing mechanism (A), and FIG. 4 is a cross section of the socket removing mechanism (A). FIG. 5 is a cross-sectional view of the socket removing mechanism (A) showing a socket mounted state, FIG. 6 is a sectional view showing a second embodiment of the present invention, and FIG. 7 is a sectional view of a third embodiment. , Fig. 8 and Fig. 9 are explanatory views of a conventional example, in which (1) ...... swing arm (3) ...... plug (25) ...... annular lid (6) ...... casing (20). …… Control tube (A) …… Socket removal mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroo Kinoshita 4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture Osaka Gas Co., Ltd. (72) Creator Masao Uehara 4-chome, Hirano-cho, Chuo-ku, Osaka-shi, Osaka No. 1 and 2 in Osaka Gas Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A swing arm (1) (1) disposed on the outer peripheral portion of a plug (3), and a swing arm (1) disposed so as to surround the outer periphery of the plug (3). ) An auxiliary ring (26) that abuts the output end of (1) from the plug tip side,
The swing arm (1) surrounding the auxiliary ring (26) and
In a socket removal mechanism for a gas plug, which is equipped with an operating tube (20) that pushes the input end of (1) toward the proximal end of the plug and swings the plug, it is provided so as to project on the inner peripheral surface of the operating tube (20). In addition, the engaging flange (23) arranged at a position corresponding to the tip of the plug (3), and the outer peripheral edge of the engaging flange (23) are engaged with the engaging flange (23) and loosely inserted into the plug (3). And a compression spring (24) interposed between the annular lid (25), an auxiliary ring (26) surrounding the outer periphery of the proximal end portion of the plug (3), and the annular lid (25). The dustproof structure of the gas plug socket removal mechanism is set so that the urging force of 24) can be compressed by the forward output of the forward / backward movement cylinder (S1) of the socket (S).