JP5631949B2 - Plug cover - Google Patents

Description

  The present invention relates to a plug cover that covers a tip end of a plug to which a one-touch joint is connected.

  It is necessary to connect hoses for supplying gas to the gas appliance. Examples of such hoses include what is called a rubber pipe, which is conventionally used, and what is called a gas cord in which the outer side of the rubber pipe portion is reinforced with a metal wire or the like. This gas cord has one-touch joints attached to both ends, and is detachably attached to a gas introduction portion called a plug provided on the gas appliance side.

  For example, when used in a living room such as a gas fan heater, hoses may be stepped on or caught. If a rubber tube is used in such a gas fan heater, the rubber tube may be crushed when it is stepped on and supply of gas will stop, and if the rubber tube is tripped, the rubber tube may come off. Therefore, a gas cord is used for the gas fan heater, and a plug to which a one-touch joint is attached is provided on the gas fan heater side.

  However, since the rubber tube itself has elasticity and expands and contracts, the rubber tube can be forcibly connected to the plug. As described above, since the usage method of connecting the rubber tube to the plug is not desirable, it is known that the rubber tube cannot be physically connected even if the rubber tube is connected to the plug (see, for example, Patent Document 1).

  Further, there is known a sensor in which a sensor is provided in the vicinity of a plug so that a gas fan heater operates only when a one-touch joint is connected (see, for example, Patent Document 2).

JP 2010-164135 A (FIG. 4) JP 2010-169251 A (FIG. 4)

  The above-mentioned conventional one remains attached to the plug even after the one-touch joint is connected to the plug. On the other hand, once the one-touch fitting is connected, the one-touch fitting will not be removed frequently, and since the gas cord is prepared, once the gas cord is connected, remove the gas cord and attach it to the rubber tube. It's hard to think about changing.

  Therefore, the above conventional one is useful when the one-touch joint is first connected to the plug, but it is not necessary once the one-touch joint is connected, but it is still attached around the plug. It becomes a state. In particular, the sensor using the sensor described in Patent Document 2 can be an element that causes the sensor to break down and stop the operation of the gas fan heater even though it is unnecessary after the one-touch joint is connected. Furthermore, there is a possibility that the sensor does not operate due to foreign matter biting into the sensor portion, and the gas fan heater cannot be operated.

  As described above, it is desirable to remove the one that allows the one-touch joint to be connected by preventing the rubber tube from being connected to the plug, but it should be removed after the one-touch joint is connected. If they fall apart and fall off, for example, there is a fear that some sort of damage accident may have occurred unless such a mechanism is understood.

  In view of the above problems, an object of the present invention is to provide a plug cover that does not cause the above problems.

  In order to solve the above problems, the plug cover according to the present invention is attached to the tip of a plug to which a one-touch joint attached to the end of the gas cord is detachably connected, and a rubber tube other than the one-touch joint is connected to the plug. A plug cover that prevents the plug cover from engaging, an engagement portion that engages with the tip of the plug, and a cylindrical portion that extends from the engagement portion to the opposite side of the plug and into which the one-touch joint is inserted And the plug cover is composed of a plurality of members, and the plurality of members are engaged with each other so that they do not fall off at the tip of the plug while being connected to each other. When inserted, it is equipped with a connection release mechanism that releases the connection between multiple members by a one-touch joint, and when the connection is released, the members are separated from each other. When the members are integrally formed through the elastic portion that urges the tube and the one-touch joint is inserted into the cylindrical portion and the connection is released by the connection release mechanism, the members are mutually connected by the urging force of the elastic portion. The gap is widened, the tip of the plug is opened, and the one-touch joint is further moved toward the plug from the position where the connection is released, so that it can be connected to the plug.

  When the one-touch joint is connected to the plug, the connection between the members is released by the action of the connection release mechanism, and the members are separated from each other by the urging force of the elastic portion. The tip of is opened. As a result, the one-touch joint can be connected to the plug. In addition, since each member is not connected apart but integrated with each other via an elastic portion, it is difficult to misunderstand that some kind of damage accident has occurred.

  Further, when a one-touch joint is inserted into the cylindrical part and the connection is released by the connection release mechanism, the urging force of the elastic part expands between the parts, and the tip of the plug is opened, and the one-touch joint is connected. Since it can be connected to the plug by moving further from the released position toward the plug, after the push-in joint is inserted into the tubular part and the plug cover is removed, the push-in joint is once pulled back. The one-touch joint can be connected to the plug without any trouble.

  In addition, if a plug cover that is far from the tip of the plug falls on the floor or the like, it may be surprising that the parts fall, but the gap between the above parts expands and the tip of the plug is opened to a part of the plug. Such a problem does not occur if a drop prevention portion that engages to prevent the plug from falling off is provided.

  The connection release mechanisms are provided at a plurality of locations where the distance from the opening of the cylindrical portion is different, and the mutual connection of the parts is not released unless all the connection release mechanisms release the connection. In this case, it is possible to prevent the connection release mechanism from being intentionally or mistakenly operated with something other than the one-touch joint.

  As is apparent from the above description, in the present invention, gas pipes other than the one-touch joint such as a rubber pipe are connected to cover the tip of the plug until the one-touch joint is first connected to the plug. Can be prevented. Then, when the one-touch joint is connected to the plug, the plug cover is detached from the plug, but at that time, each member constituting the plug cover does not fall apart. Then, after the plug cover is removed, the one-touch joint can be connected to the plug without performing an operation such as pulling the one-touch joint back to the front, so that trouble does not occur when connecting the one-touch joint.

The figure which shows the back of a gas fan heater The figure which shows the state which attached the plug cover to the plug Figure showing the plug cover in the open state The figure which shows the state when attaching the plug cover to the plug The figure which shows the state which mounted | wore the plug cover of the 2nd form. The figure which shows the state which the plug cover of a 2nd form opened The figure which shows the state at the time of attaching the plug cover of a 2nd form to a plug The figure which shows the state which mounted | wore the plug cover of the 3rd form The figure which shows the state which the plug cover of the 3rd form opened

  With reference to FIG. 1, GF is a gas fan heater, and a plug P for introducing gas into the gas fan heater GF is attached to the rear surface. The plug P is an L-shaped pipe and is held so as to be rotatable with respect to the gas fan heater GF. A plug cover 1 according to the present invention is attached to the tip of the plug P. The plug cover 1 is attached to the plug P when the gas fan heater GF is shipped from the factory. The plug cover 1 is attached to the plug P until the one-touch joint J is connected to the plug P in a place of use such as a home. GC is a gas cord reinforced with a metal wire.

  Referring to FIGS. 2 to 4, the plug cover 1 is composed of a pair of symmetrical members 2. These members 2 are formed by injection molding. At this time, two elastic portions 11 are formed by simultaneous molding, and the pair of members 2 are connected to each other via the two elastic portions 11.

  Each member 2 is provided with a cantilevered elastic piece 21 extending upward in the drawing, and an engaging portion 22 extending in the horizontal direction from the tip of the elastic piece 21 is provided. Further, a connection releasing portion 23 is formed at the tip of the elastic piece 21 toward the center of the plug cover 1.

  When the pair of members 2 are aligned with each other, the engaging portion 22 is inserted into the mating engagement receiving portion 24, and the engaging portion 22 engages with the mating member 2 within the engaging receiving portion 24. . Then, both members 2 cannot be separated from each other in a state of being combined with each other. In this state, when the connection release portion 23 is pushed outward, the elastic piece 21 bends outward and the engagement by the engagement portion 22 is released. Then, the pair of members 2 returns to the open state as shown in FIG. 3 by the urging force of the elastic portion 11.

  In a state in which the two members 2 are combined with each other, the pair of connection release portions 23 are in positions facing each other, but the distance is set slightly smaller than the outer diameter of the one-touch joint J. Accordingly, when the one-touch joint J is inserted into the tubular portion of the plug cover 1 with both the members 2 being combined, the one-touch joint J pushes both the connection release portions 23 outward and the engagement by the engagement portions 22 is released. Will be.

  The part where the one-touch joint J at the tip of the plug P is connected is provided with a machined cylindrical part P1, a groove P2 formed in the cylindrical part P1, and a seal part P3 formed at the tip. Yes. Both members 2 are provided with a hole 25 sandwiching the cylindrical part P1, a hole 26 fitted into the groove P2, and a bottom plate part 27 covering the seal part P3. Therefore, when the members 2 are combined from the state shown in FIG. 4, the hole 26 fits into the groove P <b> 2, so that the plug cover 1 is not detached from the plug P. And since the baseplate part 27 covers the seal | sticker part P3, even if it is going to connect a rubber pipe to the plug P, the connection is blocked | prevented by the baseplate part 27, for example. On the other hand, when the one-touch joint J is to be connected, the engagement by the engaging portion 22 is released as described above by inserting the one-touch joint J into the cylindrical portion of the plug cover 1, and further, the elastic portion 11. Both members 2 are greatly opened by the urging force. Note that both members 2 fall away from the plug P as they are, but a pair of gripping portions 12 are formed on one member 2 so that the gripping portion 12 grips the large-diameter portion P4 of the plug P. Therefore, the opened plug cover 1 does not fall from the plug P.

  In the form shown in FIGS. 2 to 4, the member 2 is opened in the horizontal direction, but may be opened in the vertical direction as shown in FIGS. 5 to 7. With reference to FIGS. 5 to 7, the plug cover 1 includes a pair of members 3, and both members 3 are connected to each other by a single elastic portion 30. Reference numeral 38 denotes a gripping portion, which prevents the plug cover 1 from dropping from the plug P by the cooperation of the gripping portion 38 and the elastic portion 30 even when both the members 3 are opened.

  These members 3 are provided with an elastic piece 31 formed in a cantilever state along the circumferential direction of the cylindrical portion, and an engaging portion 32 formed at the tip of the elastic piece 31 is attached to the counterpart member 3. The point that the two members 3 are engaged with each other and the connection releasing part 33 that is also formed at the tip of the elastic piece 31 is pushed outward to release the engagement by the engaging part 32. This is the same as the embodiment.

  In the embodiment shown in FIGS. 5 to 7, the elastic piece 34 is further provided in the vicinity of the bottom plate portion 37, and the engaging portion 35 and the connection releasing portion 36 are provided at the tip thereof. Since the connection release portion 36 protrudes in the direction opposite to the insertion direction of the one-touch joint J, the one-touch joint J is inserted into the cylindrical portion of the plug cover 1 and the tip of the one-touch joint J pushes down the connection release portion 36. Thus, the engagement by the engagement portion 35 is released.

  As described above, in the plug cover 1 according to the second embodiment, both the members 3 are opened by expanding the connection release portion 33 outward and further pressing down the connection release portion 36. As described above, since the two-stage connection release mechanism is provided, even if the connection release portion 33 is intentionally or accidentally pushed outward by something other than the one-touch joint J, the engagement by the elastic piece 34 is further performed. Since it is not released, the tip of the plug P can be kept covered. When the one-touch joint J is connected, when the engagement by both the engaging portions 32 and 35 is released, the elastic portion 30 opens to the state shown in FIG. 7, but as described above, the gripping portion 38 is opened. By the cooperation of the elastic part 30, the opened plug cover 1 does not fall away from the plug P.

  In the plug cover 1 according to the above two embodiments, since the plug cover 1 is opened by inserting the one-touch joint J into the cylindrical portion, the one-touch joint J can be plugged as it is without returning the one-touch joint J. The one-touch joint J can be connected to the plug P simply by moving toward P.

  By the way, in the second embodiment shown in FIGS. 5 to 7, the open plug cover 1 is prevented from falling off the plug P by the cooperation of the grip portion 38 and the elastic portion 30. However, when the plug cover 1 is removed from the plug P, it is necessary to bend the grip portion 38 greatly, and it may be difficult to remove the plug cover 1 slightly.

  A third embodiment in which the plug cover 1 is easily attached to and detached from the plug P is shown in FIGS. In this example, similarly to the second embodiment, the elastic piece 34 is provided in the vicinity of the bottom plate portion 37, and the engaging portion 35 and the connection releasing portion 36 are provided at the tip thereof. And since this connection cancellation | release part 36 is protruded in the insertion direction reverse direction of the one-touch coupling J similarly to the case of the said 2nd Embodiment, the one-touch coupling J is inserted in the cylindrical part of the plug cover 1, When the tip of the one-touch joint J pushes down the connection release portion 36, the engagement by the engagement portion 35 is released.

  The connection release part 33 is spread outward, and the connection release part 36 is further pushed down to release the connection between the two members 3, and both members 3 are opened by the elastic force of the elastic part 30. This plug cover 1 is attached to the plug P from below, and the plug cover 1 is attached to the plug P by elastically sandwiching the plug P with a pair of gripping pieces 39. Therefore, when removing the plug cover 1 from the plug P, the plug cover 1 may be pulled down.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Plug cover 2 Member 3 Member 22 Engagement part 23 Connection release part 32 Engagement part 33 Connection release part 35 Engagement part 36 Connection release part

Claims (3)

  A plug cover that is attached to the tip of a plug to which a one-touch joint attached to the end of the gas cord is detachably connected and prevents a rubber tube other than the one-touch joint from being connected to the plug. An engagement portion that engages with the tip of the plug, and a cylindrical portion that extends from the engagement portion to the opposite side of the plug and into which the one-touch joint is inserted, and the plug cover is configured by a plurality of members When the plurality of members are connected to each other so as not to drop off at the tip of the plug, and when the one-touch joint is inserted into the cylindrical portion, the one-touch joint connects the plurality of members. Each of the members is integrally formed via an elastic portion that urges the members to be separated from each other when the connection is released. When the one-touch joint is inserted into the cylindrical part and the connection is released by the connection release mechanism, the urging force of the elastic part expands between the parts, opening the plug tip, and the one-touch joint is released from the connection position. A plug cover that can be connected to the plug by moving further toward the plug.   2. A drop-off preventing portion for preventing a drop-out from the plug by engaging with a part of the plug in a state in which the portions are expanded and the plug tip is opened. Plug cover.   The connection release mechanism is provided at a plurality of locations at different distances from the opening of the cylindrical portion, and the mutual connection of the parts is not released unless all the connection release mechanisms release the connection. The plug cover according to claim 1 or 2.

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