JP6258695B2 - Gas stopper - Google Patents

Description

  The present invention mainly relates to a gas stopper used to connect a gas main pipe side on a building side and a gas equipment side.

  Various types of gas stoppers are used to connect the gas main pipe side and the gas equipment side on the building side. In many cases, gas plugs are provided in a gas plug main body having a gas flow path and a plug sliding surface inside, a plug body that slides on the plug sliding surface to open and close the gas flow path, and a gas plug main body. A knob for moving the plug body that is rotatably mounted and engaged with the plug body so as not to rotate relative to the plug body, and a rotation range of the knob is restricted within a range from the first restriction position to the second restriction position. In general, the plug body is in a posture to close the gas flow path at the first restriction position, and the plug body is in a posture to open the gas flow path at the second restriction position. Is. An example of such a gas plug is described in Patent Literature 1, Patent Literature 2, or Patent Literature 3.

  FIGS. 6 and 7 are gas stoppers described in Patent Document 3. FIG. 6 is an exploded perspective view showing the entire configuration of the gas stopper 1. FIG. 7 shows the structure when the gas stopper 1 is opened. Shown in cross section. The gas stopper main body 10 has a central upper end portion 11 to which the knob 50 is attached, an outlet side portion 12 connected to the gas equipment side, and an inlet side portion 13 connected to the gas main pipe side. A gas flow path 14 is formed between the inlet side portion 13 and the outlet side portion 12. A plug sliding surface 15 is formed in a part of the gas flow path 14, and the plug 20 closes the outer peripheral surface 21 of the plug sliding surface 15 to the plug sliding surface 15. Thus, it arrange | positions so that rotation is possible.

  A knob 50 is attached to the plug body 20 inserted into the plug sliding surface 15 from above. The knob 50 is a cylindrical body, and has a central cylindrical portion 51 and a peripheral wall portion 52 outside the central cylindrical portion 51. The outer diameter of the central cylindrical portion 51 is somewhat smaller than the inner diameter of the central upper end portion 11 of the gas plug body 10, and the inner diameter of the peripheral wall portion 52 is substantially equal to the outer diameter of the central upper end portion 11. A concave groove 53 is formed on the lower surface of the central cylindrical portion 51, while a projection 22 that fits into the concave groove 53 is formed on the upper end surface of the plug body 20.

  The central upper end portion 11 of the gas plug main body 10 has a notch portion 16, that is, a region portion in which the peripheral wall is missing, over a range of approximately 90 degrees in the circumferential direction, and both ends of the notch portion 16 are vertical. It is set as the notch step part 17a, 17b.

  A coil spring 30 is interposed between the upper end surface of the plug body 20 and the lower end surface of the knob 50 in a state where the plug body 20 is inserted into the inside of the plug body sliding surface 15 formed in the gas plug body 10, and the plug body. As a posture in which the protrusion 22 formed on the upper end surface 20 is inserted into the recessed groove 53 formed on the lower surface of the knob 50, the knob 50 is pressed from above. And the stop key 40 is inserted from the opening 54 formed in the said surrounding wall part 52 of the knob | pick 50 in the attitude | position pressed down. The inserted stop key 40 passes through the notch 16 formed in the central upper end 11 of the gas plug body 10, passes through the key hole 55 formed in the central cylindrical part 51 of the knob 50, and the tip thereof is gas. It reaches the inside of the annular inner groove 18 formed on the inner surface of the central upper end 11 of the plug body 10. When the knob 50 is slightly rotated in this posture, both ends of the stop key 40 are in the posture of entering the annular inner groove 18, and even if the force of the compressed coil spring 30 acts upward, the knob 50 The gas stopper main body 10 is fixed to the gas stopper main body 10 in a rotatable posture without coming out of the central upper end portion 11 of the gas stopper main body 10.

  The knob 50 has a convex part (not shown) formed on the top surface between the central cylindrical part 51 and the outer peripheral wall part 52, and the knob 50 is fixed to the gas plug body 10 as described above. Thus, the convex portion is positioned in the notch portion 16 described above. Thereby, the rotation range of the knob 50 includes a first restricting position where the convex portion abuts against one notch step portion 17a of the notch portion 16 formed in the central upper end portion 11 of the gas plug main body 10. The angle range between the second restricting positions that abut against the other notch step 17b, specifically, the angle range of approximately 90 degrees.

  In the actual gas stopper, for example, in the second restricting position, the gas stopper is opened as the through hole 23 formed in the stopper 20 communicates with the gas flow path 14 as shown in FIG. In the first restricting position where the knob 50 is rotated 90 degrees clockwise from there, the gas flow path 14 is closed by the plug body 20.

  That is, the currently used gas plug is normally a position where the gas flow passage 14 is opened when the plug 20 is connected between the gas main pipe side on the building side and the gas equipment side. The gas device is ignited and extinguished by operating the ignition and opening / closing valve means provided in the gas device. When the gas equipment is not used for a long period of time, the user operates the knob 50 provided on the gas stopper to rotate the stopper body 20 so that the stopper body 20 is in the closed position, thereby ensuring safety. doing.

Japanese Patent Laid-Open No. 2001-4042 JP-A-2005-24076 JP 2006-52784 A

  As described above, in the known gas stopper, by operating the knob 50 so that the stopper 20 is closed, the gas flow is cut off and the safety in the case of not using for a long period of time is ensured. Secured. However, in the gas stoppers that are currently widely used as described in Patent Documents 1 to 3, when the knob 50 is operated to change the stopper 20 from the fully open position to the fully closed position, The operation is basically free from the fully closed position to the fully opened position. The rotation of the plug body in the direction from the open state to the closed state of the gas flow path is a rotation to the safe side, and even if such a rotation occurs when the user is not conscious, it is particularly problematic. There is no. However, when the gas flow path is turned from the closed state to the opened state due to an unexpected accident that the user is not aware of, there is a risk of causing unexpected gas leakage. Therefore, the user is required to always pay sufficient attention to the surrounding environment where the gas stopper is attached.

  The present invention has been made in view of the circumstances as described above, and makes it possible to prevent the gas plug in the closed state from being opened by ignoring the intention of the user due to an unexpected external force. Therefore, it is an object to disclose a gas stopper with higher safety.

  The gas plug according to the present invention includes a gas plug body having a gas flow path and a plug body sliding surface therein, a plug body that slides on the plug body sliding surface to open and close the gas flow path, and the gas plug A knob for moving the plug body rotatably attached to the main body and engaged with the plug body so as not to rotate relative thereto, and a rotation range of the knob from the first restriction position to the second restriction position. A rotation range restricting means for restricting in a range of positions, wherein the plug is in a posture in which the gas flow path is closed at the first restricting position, and the plug is at the gas flow at the second restricting position. The gas stopper is in a posture in which a path is opened, and the gas stopper basically controls the knob to freely rotate from the first restriction position toward the second restriction position. It is characterized by comprising a movement restricting means.

  The gas stopper according to the present invention is provided with the rotation restricting means, so that the knob is the first except when the user intentionally rotates the knob from the first restricting position toward the second restricting position. It is possible to avoid turning from the first restriction position toward the second restriction position. Therefore, the safety of the gas stopper is improved, and it is not necessary to pay great attention to the surrounding environment when attaching the gas stopper, and the burden on the user or the operator is reduced.

  In the gas stopper according to the present invention, the specific configuration of the rotation restricting means is arbitrary, but as an example, the rotation restricting means is provided at a portion where the knob is rotatably attached to the gas stopper main body. A first locking member formed on the gas stopper body side, and the first locking member formed on the knob side when the knob is about to rotate from the first restriction position toward the second restriction position. A second locking body that comes into contact with the other locking body, and a contact that is attached to the knob side and that can release the contact between the first locking body and the second locking body. It is characterized by comprising release means.

  In this aspect, the knob can be rotated from the first restriction position toward the second restriction position only when the user or the operator appropriately operates the collision release means. Otherwise, the knob does not rotate in that direction. Therefore, gas does not flow out in an unconscious state, and high safety of the gas stopper is ensured.

  In another more specific aspect, the second locking body is a raised portion formed on the knob, and the first locking body is spring steel, and the distal end side is engaged with the raised portion. It is attached to the gas stopper main body side so that the first position and the second position where the engagement is released can be selected, and the contact release means presses the first locking body. The distal end side is pressed toward the gas plug body side, and thereby the first locking body can be moved from the first position to the second position.

  Further, in a more specific aspect, the first locking body is a raised portion formed in the gas plug main body, and the second locking body has a first position engaged with the raised portion. The locking means is attached to the knob so that the second position where the engagement is released can be selected. The contact releasing means presses the locking means from the first position. It is a means which can be moved to the position of 2.

  In any of the above aspects, the knob does not rotate from the first restriction position toward the second restriction position unless the user or the operator presses the collision release means. The high safety of the gas stopper is ensured.

  In the gas stopper according to the present invention, unless the user or the operator performs a special operation for the knob, the stopper does not rotate inadvertently in the direction from the closed position to the opened position. Therefore, high safety of the gas stopper is ensured.

The perspective view corresponding to FIG. 6 which decomposes | disassembles and shows the whole structure of the 1st form of the gas stopper by this invention. Sectional drawing corresponding to FIG. 7 which shows the structure at the time of opening of the gas stopper shown in FIG. 3A is a horizontal cross-sectional view of the gas stopper shown in FIG. 1 when the knob is in a position where rotation is restricted, and FIG. 3B is a state after the knob is rotated. Sectional drawing of the horizontal direction shown. It is a figure corresponding to Drawing 3 for explaining the 2nd form of a gas tap by the present invention, and Drawing 4 (a) is a horizontal sectional view in case a knob is in the position where rotation was controlled, FIG. 4B is a horizontal sectional view showing a state after the knob is rotated. FIG. 5 is a horizontal cross-sectional view showing an enlarged main part of the gas stopper shown in FIG. 4. The perspective view which decomposes | disassembles and shows the whole structure of the gas stopper known conventionally. Sectional drawing which shows the structure at the time of opening of the gas stopper shown in FIG.

Hereinafter, embodiments of a gas stopper according to the present invention will be described with reference to the drawings.
[First embodiment]
1 to 3 show a first embodiment of a gas stopper according to the present invention. The gas plug A of the first embodiment is known in the prior art as described with reference to FIGS. 6 and 7 except that it includes a rotation restricting means for restricting the knob 50 from freely rotating. It may be the same as the gas plug 1. Accordingly, in FIGS. 1 to 3, the corresponding members are denoted by the same reference numerals as in FIGS. 6 and 7.

  That is, the gas stopper A according to the present invention has, as a basic structure, a gas stopper body 10 having a gas flow path 14 and a stopper sliding surface 15 inside, and the gas stopper A sliding on the stopper sliding face 15 to move the gas flow. A plug body 20 that opens and closes the passage 14, and a knob 50 that is rotatably mounted on the gas plug main body 10 and that engages the plug body 20 so as not to rotate relative thereto. A rotation range restricting means for restricting the rotation range of the knob 50 from the first restricting position to the second restricting position, and the first restricting position (that is, formed on the back surface of the knob 50). At a position where a not-shown convex portion abuts against one notch step portion 17 a of the notch portion 16 formed at the central upper end portion 11 of the gas plug body 10, the plug body 20 closes the gas flow path 14. The knob 50 is rotated 90 degrees clockwise from there. 2nd restriction position (that is, the position where the convex part formed on the back surface of the knob 50 is in contact with the other notch step part 17b of the notch part 16 and is the position shown in FIG. 2) The plug 20 has a configuration in which the gas flow path 14 is opened. As described above, this basic configuration is a configuration provided in a conventionally known gas stopper.

  In addition to its basic structure, the gas stopper A according to the present invention includes a rotation restricting means for restricting the knob 50 from freely rotating from the first restricting position toward the second restricting position. Yes. Therefore, when the gas flow path 14 is in a closed state, it is possible to effectively avoid an unexpected external force acting on the knob 50 and the gas flow path 14 to be in an open posture. The safety of the stopper A is improved. The rotation of the knob 50 in the direction from the gas channel 14 to the closed state is the rotation to the safety side. In the gas stopper A according to the present invention, the knob 50 is rotated to the safety side. Is not regulated.

  The said rotation control means in the gas stopper A of the 1st form shown in FIGS. 1-3 is demonstrated. As shown in FIG. 1, a notch 60 extending in the circumferential direction is formed on the outer peripheral surface of the central upper end portion 11 of the gas plug body 10 at a position facing the circumferential direction by 180 degrees, as shown in FIG. In addition, a spring steel 61 having one end fixed to the central upper end portion 11 is attached to the notch 60 in a posture in which the other end is positioned radially outward from the outer peripheral surface of the central upper end portion 11. . The spring steel 61 corresponds to the “first locking body formed on the gas plug main body” in the present invention.

  On the other hand, the peripheral wall portion 52 of the knob 50 has a height position facing the circumferential cutout 60 formed in the central upper end portion 11 of the gas plug body 10 and a position facing the circumferential direction 180 degrees. Two push buttons 70 are attached. The push button 70 includes a support shaft 71 extending in the radial direction, a button 72 integrated with the outer end of the support shaft 71, and a stop plate 73 integrated with the vicinity of the inner end of the support shaft 71. doing. The peripheral wall portion 52 is formed with a radial hole 74 through which the support shaft 71 is inserted, and a recess portion 75 into which the button 72 can be inserted. The bottom surface of the recess portion 75 and the support shaft 71 are connected to each other. A coil spring 76 is interposed between the button 72 and the button 72 inserted in the hole 74. In a state where the push button 70 is attached to the peripheral wall portion 52 of the knob 50, the push button 70 receives a biasing force radially outward by the action of the coil spring 76 and is fixed to the support shaft 71. 73 abuts against the inner peripheral surface of the peripheral wall portion 52 to prevent the push button 70 from coming off. In this posture, the inner tip of the support shaft 71 is substantially the same as the inner peripheral surface of the peripheral wall portion 52. This push button 70 constitutes “impact release means” in the present invention.

  On the inner peripheral surface of the peripheral wall portion 52 of the knob 50 and in the vicinity of the position where the push button 70 is attached, the diameter of the spring steel 61 is larger than the outer peripheral surface of the circumferential notch 60. A raised portion 80 is formed at a position facing the tip on the side located on the outer side in the direction, and the raised portion 80 and the tip portion protruding to the outside of the spring steel 61 are brought into a contacted posture. The rotation of the knob 50 is restricted. It should be noted that the raised portion 80 is in contact with the first locking member when the knob is formed on the knob side and the knob is about to rotate from the first restriction position toward the second restriction position. It corresponds to a “second locking body”.

  When the knob 50 is in the position shown in FIG. 3A, that is, in the position where the raised portion 80 formed on the knob 50 side is in contact with the tip of the spring steel 61 fixed on the gas plug main body 10 side. As described above, the clockwise rotation of the knob 50 is restricted. When the knob 50 is in this position, the first restricting position, that is, a not-shown convex portion formed on the back surface of the knob 50 is formed on the notch 16 formed on the central upper end 11 of the gas plug body 10. The stopper 20 is in a position in contact with one of the notch steps 17 a, and the plug 20 is in a posture in which the gas flow path 14 is closed. As described above, the clockwise rotation of the knob 50 is restricted, and the knob 50 does not rotate even if an external force is applied to rotate the knob 50 inadvertently clockwise. In addition, the gas flow path 14 can be prevented from opening unexpectedly.

  When the user or the worker intends to change the gas flow from the closed posture to the open posture by his / her own intention, the user or the worker first pushes down the push button 70. As a result, the support shaft 71 enters the radially inner side, and the tip of the support shaft 71 causes the spring steel 61 to enter the radially inner side, that is, into the circumferential notch 60 described above. When the spring steel 61 is displaced, the engagement between the tip of the spring steel 61 and the raised portion 80 is released, and the knob 50 can be freely rotated in the clockwise direction. When the user or the operator turns the knob 50 by 90 degrees, the knob 50 moves to the second restriction position, and the plug body 20 is in a state where the gas flow path 14 shown in FIG. 2 is opened. It becomes. This state is shown in FIG.

  When the user or operator closes the gas flow path 14, the knob 50 is rotated 90 degrees counterclockwise. As shown in FIG. 3 (b), the knob 50 is in a freely rotatable state, and can be easily rotated to move to the position shown in FIG. 3 (a), that is, the first restriction position described above. Can do. At that position, the raised portion 80 formed on the knob 50 side again and the tip of the spring steel 61 fixed on the gas plug body 10 side are brought into contact with each other in the clockwise direction, and the clockwise direction of the knob 50 is reached. The rotation, that is, the rotation for turning the plug 20 in the direction of opening the gas flow path 14 is restricted.

  As described above, in the gas plug A of the first embodiment shown in FIGS. 1 to 3, the second locking body is the raised portion 80 formed on the knob 50, and the first locking body is a spring. It is steel 61, Comprising: The front end side is attached to the gas stopper main body 10 side so that the 1st position engaged with the said protruding part 80 and the 2nd position from which engagement was cancelled | released can be selected. The contact release means (push button 70) is pressed to press the distal end side of the first locking body (spring steel 61) toward the gas plug main body 10 side, thereby the first engagement member. The stop (spring steel 61) can be moved from the first position to the second position. By operating the push button 70, the knob 50 can be moved from the posture in which the gas flow path 14 is closed. It becomes possible to rotate toward the open posture.

[Second form]
4 and 5 are views for explaining a second embodiment of the gas stopper according to the present invention. FIGS. 4 (a) and 4 (b) correspond to FIGS. 3 (a) and 3 (b), respectively. Yes. FIG. 5 shows an enlarged main part. The gas stopper A1 has the specific configuration of the rotation restricting means for restricting the knob 50 from freely rotating from the first restricting position toward the second restricting position. This is different from the gas stopper A. Except for the configuration of the rotation restricting means, the other configuration of the gas plug A1 may be the same as the gas plug A of the first embodiment, and the description thereof is omitted.

  In the gas stopper A1, the rotation restricting means includes a raised portion 90 formed on the gas stopper body 10 side and an engaging / disengaging means 100 formed on the knob 50 side. That is, in the gas stopper A1, a member corresponding to the “first locking body formed on the gas stopper main body” in the present invention is formed not on the “spring steel 61” but on the gas stopper main body 10 side. And the engaging / disengaging means 100 is the first "when the knob is formed on the knob side and the knob is about to rotate from the first restriction position to the second restriction position" in the present invention. It corresponds to a “second locking body that comes into contact with the locking body” and a “contact release means”.

  In the gas plug A1, as shown in the drawing, the raised portions 90 are formed at two positions on the outer peripheral surface of the central upper end portion 11 of the gas plug main body 10 that are opposed to each other by 180 degrees in the circumferential direction. The raised portion 90 is preferably composed of a surface 91 that stands substantially perpendicular to the radial direction of the central upper end portion 11 and an inclined surface 92 that is inclined from the tip of the vertical surface 91 toward the peripheral surface of the central upper end portion 11. Composed.

  On the other hand, the peripheral wall portion 52 of the knob 50 is provided with an engaging / disengaging means 100 at two positions facing the raised portion 90 and facing the circumferential direction 180 degrees. The engagement / disengagement means 100 includes a locking claw 103 that is pivotally supported around a support shaft 102 perpendicular to the radial direction in an opening 101 formed in the peripheral wall portion 52. The locking claw 103 includes a locking portion 104 and a column portion 105, and an appropriate place of the column portion 105 is pivotally supported by the support shaft 102. The locking portion 104 includes a bulging portion 106 that bulges toward the center upper end portion 11 side of the gas plug main body 10, and the bulging portion 106 is located on the side facing the column portion 105 side on the peripheral wall portion 52. The surface 107 rises substantially perpendicularly to the radial direction, and the inclined surface 108 is inclined from the front end of the vertical surface 107 toward the rear side.

  A spring 109 is interposed between the support column portion 105 of the locking claw 103 and the peripheral wall portion 52 inside the opening 101, and the locking claw 103 is illustrated in FIG. It is biased to rotate clockwise. Further, a protrusion 110 is formed on the outer surface of the support column 105. Further, in a state where no external force is applied, the locking claw 103 causes the tip end portion of the bulging portion 106 to protrude inward from the inner peripheral wall of the peripheral wall portion 52, and the convex portion 110 is the peripheral wall portion. 52 is attached in the opening 101 so as to project outward from the outer wall of 52.

  Therefore, the knob 50 is rotated counterclockwise in the figure, and the vertical surface 91 of the raised portion 90 formed at the position shown in FIG. When the vertical surface 107 of the bulging portion 106 of the locking claw 103 constituting the engaging / disengaging means 100 formed at the position is opposed, the knob 50 is in a state in which further rotation is restricted. . In this posture, the knob 50 is restricted from freely rotating from the first restriction position toward the second restriction position. At this time, the gas flow path 14 is closed by the plug body 20.

  When the user or the operator intends to change the gas flow path from the closed position to the open position by his / her own intention, the user or the operator pushes down the convex portion 110. Thereby, the latching claw 103 swings counterclockwise in the figure. Due to the swing, the engagement between the raised portion 90 formed on the gas plug body 10 side and the locking claw 103 is released, and the knob 50 can freely rotate counterclockwise. When the user or the operator turns the knob 50 by 90 degrees, the knob 50 moves to the second restriction position, and the plug body 20 opens the gas flow path 14 as shown in FIG. Fully open. This state is shown in FIG.

  When the user or the operator closes the gas flow path 14, the knob 50 is rotated 90 degrees clockwise. As shown in FIG. 4 (b), the knob 50 is in a freely rotatable state, and is easily rotated so that the position shown in FIG. It is possible to move to the first restricting position that is a position over the raised portion 90. At that position, the rotation for turning the knob again in the direction of opening the gas flow path 14 is restricted.

  As described above, in the gas plug A1 of the second form shown in FIGS. 4 and 5, the first locking body is the raised portion 90 formed in the gas plug body 10, and the second locking body is A locking means (a swingable locking claw 103) attached to the knob 50 so that a first position engaged with the raised portion 90 and a second position released from the engagement can be selected. The contact release means is a convex part 110 on the outer surface of the column part 105, and by pressing the convex part 110, the locking means (the swingable locking claw 103) is moved to the first part. The knob 50 can be moved from the position to the second position, so that the knob 50 can be rotated from the position in which the gas flow path 14 is closed to the position in which it is opened.

  In the gas stopper A shown in FIGS. 1 to 3 and the gas stopper A1 shown in FIGS. 4 and 5, the direction of turning the gas stopper 50 from the first restriction position to the second restriction position is reversed. However, this is due to a difference in specifications regarding the rotation direction of the plug 20 when the gas flow path of the gas plug is opened and closed, and does not affect the substantial configuration of the invention.

A, A1 ... gas stoppers according to the present invention,
10 ... Gas plug body,
20: Plug body,
50 ... pick,
61 ... Spring steel (first locking body),
70 ... push button (impact release means),
80: Raised portion (second locking body),
90 ... ridge (first locking body),
100 ... engagement / disengagement means,
103. Swinging claw (second locking body).

Claims (1)

A gas plug body having a gas flow path and a plug body sliding surface inside, a plug body that slides on the plug body sliding surface to open and close the gas flow path, and is rotatably mounted on the gas plug body And a knob for moving the stopper, which is engaged with the stopper so as not to rotate relative to the stopper, and a rotation for restricting a rotation range of the knob within a range from a first restriction position to a second restriction position. Range restriction means, wherein the plug body is in a posture in which the gas flow path is closed at the first restriction position, and the plug body is in a posture in which the gas flow path is open at the second restriction position. A gas tap,
The gas stopper includes rotation restricting means for restricting the knob from freely rotating from the first restricting position toward the second restricting position,
The rotation restricting means includes a first locking body formed on the gas plug main body side at a portion where the knob is rotatably mounted on the gas plug main body, and a knob formed on the knob side. A second locking body that comes into contact with the first locking body when rotating from the first restriction position toward the second restriction position; It is comprised by the contact release means which can cancel | release the contact of 1 latching body and said 2nd latching body,
One of the first locking body and the second locking body is a raised portion that protrudes in the radial direction of the plug body, and the contact release means presses the radial direction to press the first locking body. The contact between the first locking body and the second locking body is released ;
The second locking body is the raised portion formed on the knob, and the first locking body is made of spring steel and is engaged with the first position where the tip side is engaged with the raised portion. It is attached to the gas stopper body side so that the released second position can be selected, and the contact releasing means presses the tip end side of the first locking body to the gas stopper body side. A gas stopper, characterized in that the gas stopper is a means capable of pressing the first locking body toward the second position and thereby moving the first locking body from the first position to the second position .

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