JP3216797U - Coupling metal fittings, insert metal fittings and sliding cylinders used therefor - Google Patents

Abstract

The present invention provides a fitting that can more easily and unexpectedly be prevented from being unintentionally released. An insertion fitting 2 having an engaging projection 22 and a sliding portion 23 continuous with the engagement projection 22, a receiving fitting 3 having a claw 31, and a push ring portion 40 are provided while the insertion fitting 2 is loosely penetrated. And the push ring part 40 is provided so as to be slidable along the slide part 23 by sliding the slide cylinder 4, and the slide of the push ring part 40 is provided. In the coupling fitting 1 in which the engagement between the claw 31 and the engagement projection 22 can be released, the insertion fitting 2 has a latching portion 24, and the sliding cylinder 4 is connected to the latching portion 44. And the engaging portion 44 is provided so as to be rotatable and engageable with the engaging portion 24, and the urging means is engaged with the engaging portion 24 and the engaging portion 44. The latching portion 24 and the latching portion 44 can be unlocked by rotating the latching portion 44. To. [Selection] Figure 1

Description

  The present invention relates to a coupling fitting, and a fitting and a sliding cylinder used therein, and more particularly to a plug-type coupling fitting and a fitting and a sliding cylinder used therefor.

  Conventionally, there are plug-in type fittings used for joining fire hoses or the like (see, for example, Patent Documents 1 and 2). Such a coupling metal fitting consists of two parts, a metal fitting and a metal fitting. The metal fitting is provided with a plurality of claws urged in the inner diameter direction by the claw ridges and engages the metal fitting with the metal claw. A recess provided in a possible manner is formed, and when the metal fitting is inserted into the receiving metal fitting, the claws and the groove are engaged to engage with each other.

  Such a coupling fitting is provided with a push ring for releasing the coupling. The press ring is slidable in the axial direction and has a hook part (flange) provided so that it can be hooked with a finger. By pushing up the claw ridge in the outer diameter direction, the engagement between the claw and the recess is released, and the coupling of the coupling fitting is released.

  Plug-in coupling fittings are used for connecting fire hoses, for example. The press ring was not designed to be restricted in particular, so if the hose accidentally shakes and the push ring gets caught on something and slides in the axial direction, There is a problem that there is a possibility that the engagement between the recess and the recess is released and the metal fitting and the metal fitting may be unexpectedly detached.

  In view of this, a plug-in type fitting that prevents this unexpected detachment has been developed (see Patent Document 3). In the joint metal fitting described in Patent Document 3, a lock member is separately provided, and the sliding of the push ring is locked by the lock member, thereby preventing the joint between the insert metal fitting and the metal fitting from being released unexpectedly. doing.

JP 2013-79659 A JP 2013-92172 A JP 2004-11860 A

  In the joint metal fitting described in Patent Document 3, it is necessary to hang the lock member on the joint metal fitting after joining the metal fitting and the receiving metal fitting, and there is a problem that the work becomes complicated. In particular, in a fire scene where quickness is required, it is not practical to hang lock members on all of the fittings, and there is a situation that some of the fittings remain even if the lock members are hung. .

  In view of this, the present invention has been made in consideration of the actual situation at a fire site, and an object of the present invention is to provide a fitting that can more easily prevent the coupling from being unexpectedly released.

  The present invention includes an engagement fitting and a fitting having a sliding portion continuous with the engagement projection, a receiving fitting having a claw, a sliding cylinder having a push ring portion through which the fitting is loosened, The claw is provided so as to be able to engage with the engaging protrusion when the metal fitting is inserted into the receiving metal fitting, and the push ring portion slides the sliding cylinder. A coupling fitting provided so as to be slidable along the sliding portion and capable of releasing the engagement between the claw and the engagement protrusion by sliding of the push ring portion, The insertion fitting has a latching portion, and the sliding cylinder has a latching portion and an urging means for the latching portion, and the latching portion is rotatable and the latching portion. The urging means holds the engagement between the engagement portion and the engagement portion, and the engagement portion and the engagement portion are rotated by rotating the engagement portion. Engagement A fitting, characterized in that has a releasable. In addition, the present invention is a fitting that is used for the coupling fitting. Moreover, this invention is a sliding cylinder characterized by being used for the said coupling metal fitting.

  In the present invention, the latching portion is a latching projection or a latching groove, and the latching portion has a claw portion provided so as to be able to latch with the latching projection or the latching groove. be able to. In the present invention, the urging means can be an elastic ring provided so as to extend in the circumferential direction of the sliding cylinder. In the present invention, the urging means can be a striated body. In the present invention, the metal fitting has the claw instead of the engaging protrusion and the sliding portion, and the receiving metal fitting has the engaging protrusion and the sliding portion instead of the claw. It is possible to provide the sliding cylinder, the receiving metal fitting is loosely passed instead of the insertion fitting, and the latching portion can be provided on the receiving fitting instead of the insertion fitting. .

  The present invention provides a latching portion of a metal fitting and a latching portion that can be latched to the latching portion of the sliding cylinder, and further holds the latching portion and the latching portion by a biasing means. Since the engagement between the latching portion and the latching portion can be released by rotating the latching portion, it is possible to more easily prevent the coupling between the metal fitting and the metal fitting from being released unexpectedly. Is possible.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment of this invention, (a) is a half sectional view which shows the state which the metal fitting and the receiving metal were engaged, (b) is a principal part enlarged view of (a). It is. It is a figure which shows 1st Embodiment of this invention, and is a half sectional view which shows the state by which engagement with the metal fitting and the receiving metal fitting was cancelled | released. It is a figure which shows 1st Embodiment of this invention, and is a top view of a metal fitting and a sliding cylinder. It is a figure which shows 2nd Embodiment of this invention, (a) is the one-side sectional view which shows the state which the metal fitting and the receiving metal metal were engaged, (b) is IV-IV expanded sectional drawing. . It is a figure which shows 2nd Embodiment of this invention, and is a top view of a metal fitting and a sliding cylinder.

  A first embodiment of the present invention will be described with reference to FIGS. The coupling fitting 1 is used for coupling a fire hose (not shown), for example, and includes a fitting 2, a receiving fitting 3, and a sliding cylinder 4. The metal fitting 2 is connected to one of the fire hoses to be joined, and the metal fitting 3 is connected to the other of the fire hoses.

  The insertion fitting 2 has a substantially cylindrical shape in which a flow path F of fire extinguishing water or the like is formed inside, for example, a substantially cylindrical shape, and can be inserted into the hole 30 of the receiving fitting 3 on the tip 1a side. And a hose joint portion 21 provided with a joint portion (not shown) of a hose so that it can be inserted on the base end 1b side. In the present embodiment, the hose joint portion 21 is a type into which a joint portion of a fire hose is inserted, but other types such as screwing can be appropriately employed.

  The insertion part 20 has a sliding part 23 provided with an engaging protrusion 22 and continuous with the engaging protrusion 22 on the front end 1 a side of the outer surface thereof. The insertion portion 20 is provided with a latching protrusion 24 as an example of a latching portion on the outer surface continuous with the base end 1 b side of the sliding portion 23. The latching protrusion 24 is a substantially annular protrusion extending in the circumferential direction, and is provided so as to be able to engage with a claw portion 44a of a lock lever 44 described later. In the present embodiment, a tapered surface 24a is formed on the distal end 1a side of the latching projection 24, and the lock lever 4 is returned when the sliding cylinder 4 located on the distal end 1a side is returned to the proximal end 1b side. 44 pawl portions 44a can easily get over the latching protrusions 24.

  The metal fitting 3 has a substantially cylindrical shape, for example, a substantially cylindrical shape, in which a hole 30 constituting a part of the flow path F is provided on the inner side thereof, and the circumferential direction of the hole 30 toward the proximal end 1b side. Claws 31 are provided so as to be spaced apart from each other. Further, the receiving metal fitting 3 is provided with a hose joint 32 on the tip 1a side. As the hose joint 32, various ones can be selected as necessary, similarly to the hose joint 21.

  The claw 31 is urged in the inner diameter direction by the claw ridge 33, and when the insertion fitting 2 is inserted into the receiving fitting 3, it is once retracted in the outer diameter direction by the engagement protrusion 22. When the metal fitting 2 is inserted into the metal fitting 3 to a position where the concave strip 5 formed by the engaging projection 22 and the press ring portion 40 described later and the claw 31 face each other, the claw ridge 33 will again fly in the inner diameter direction. And engages with the engaging protrusion 22.

  In the present embodiment, the claw 31 and the claw ridge 33 are attached to the receiving metal fitting 3 so as to be accommodated in a recess 34 formed on the inner surface of the hole 30. For this reason, as for the nail | claw 31, it is desirable for the surface by the side of the base end 1b to become the taper surface 31a. In addition, the recesses 34 are provided in three locations that are spaced apart in the circumferential direction at intervals of 120 °, and accordingly, the claws 31 are also provided in three locations, but the number, shape, etc. of the claws 31 are necessary. It can be appropriately selected depending on the situation.

  The sliding cylinder 4 has a substantially cylindrical shape, for example, a substantially cylindrical shape, in which the metal fitting 2 is loosely provided, that is, can be penetrated with play. It can slide along the outer peripheral surface. The sliding cylinder 4 has a push ring portion 40 on the distal end 1a side and a main body 41 on the proximal end 1b side.

  The main body portion 41 is provided with a groove portion 42 extending in the axial direction A1 and a circumferential groove 43. The groove portion 42 is provided with a lock lever 44 as an example of an engaging means that is pivotally supported by the wall portion 42 a of the groove portion 42. Further, the front end 1 a side of the groove portion 42 is continuous with the finger insertion portion 45. The finger insertion portion 45 is provided with a size that allows at least a human finger to be inserted.

  An elastic ring 46 as an example of an urging means for the lock lever 44 is fitted in the circumferential groove 43. In the present embodiment, the elastic ring 46 is formed of an elastomer on rubber or the like and is an annular body, but the material, shape, and the like can be appropriately selected. The “ring” is defined to include an incomplete ring-like shape in which a part such as a C-ring is cut out.

  The lock lever 44 is provided so as to be able to engage with the latching protrusion 24 of the metal fitting 2, and is provided for restricting the sliding of the sliding cylinder 4 in the axial direction A1 by the latching. A claw portion 44 a is provided on the side, and the tip 1 a side is provided so as to protrude into the finger insertion portion 45. The claw portion 44a is held by the elastic force of the elastic ring 46 while the engagement between the latching protrusion 24 and the claw portion 44a is pressed, and the human finger presses the lock lever 44 in the arrow A2 direction to rotate the lock lever 44. By doing so, the engagement is released.

  The push ring portion 40 is provided for releasing the engagement between the claw 31 of the metal fitting 3 and the engagement protrusion 22 of the metal fitting 2 and releasing the metal fitting 2 from the metal fitting 3. The press ring part 40 is provided so as to be slidable along the sliding part 23 by sliding the sliding cylinder 4 along the outer peripheral surface of the metal fitting 2.

  Thereby, when the sliding cylinder 4 is positioned on the base end 1b side, the push ring portion 40 forms the concave line 5 together with the engagement protrusion 22 of the metal fitting 2, and slides the sliding cylinder 4. When the sliding cylinder 4 is positioned on the tip 1a side, the claw 31 of the metal fitting 3 housed in the recess 5 is pushed up in the outer diameter direction, and the claw 31 of the metal fitting 3 and the engagement protrusion 22 of the insertion metal fitting 2 are The engagement is released.

  That is, the push ring portion 40 is configured not to be able to slide along the sliding portion 23 and to be locked when the claw portion 44a of the lock lever 44 and the engaging protrusion 24 of the metal fitting 2 are engaged. When the lever 44 is rotated and the engagement is released, the sliding cylinder 4 can be easily slid along the sliding portion 23 by sliding along the metal fitting 2. It will be.

  When the insertion fitting 2 is inserted into the receiving fitting 3 in order to connect the fire hose, the sliding cylinder 4 is previously positioned on the base end 1b side, and the claw portion 44a of the lock lever 44 and the insertion fitting are inserted. 2, the sliding projection 4 is regulated, and the insertion portion 20 of the metal fitting 2 is inserted into the hole 30 of the metal fitting 3. If it does so, the nail | claw 31 of the receiving metal fitting 3 will be engaged with the engagement protrusion 22 of the metal fitting 2 in the form which fits in the groove 5, and the coupling | bonding of the fire hose is completed.

  When releasing the connection of the fire hose, put the finger into the finger insertion portion 45 of the sliding cylinder 4 and press the tip 1a side of the lock lever 44 with the finger in the direction of the arrow A2, thereby rotating the lock lever 44. The claw portion 44a of the lock lever 44 and the latching protrusion 24 of the metal fitting 2 are released, and then the sliding cylinder 4 is slid along the metal fitting 2 in the axial direction A and pushed. The ring part 40 is slid along the sliding part 23. Then, the push ring portion 40 of the sliding cylinder 4 gradually enters the inside of the claw 31 along the tapered surface 31a, and pushes up the claw 31 in the outer diameter direction. When the push ring portion 40 is slid to a position where the push ring portion 40 comes into contact with or close to the engagement protrusion 22, the engagement between the claw 31 and the engagement protrusion 22 is released, and the metal fitting 2 is removed. It can be removed from the receiving metal fitting 3.

  Therefore, in the coupling 1, the push ring portion 40 is restricted from sliding toward the tip 1 a as long as the claw 44 a of the lock lever 44 and the latching protrusion 24 of the insert 2 are engaged. It becomes. To release this restriction, it is necessary to rotate the lock lever 44. In this state, the lock lever 44 is biased by the elastic ring 46, so that it is unlikely to occur accidentally. Thus, even when the hose is unexpectedly shaken, the unintentional release is prevented.

  In the present embodiment, since the lock lever 44 is provided, the main body 41 has a certain length in the axial direction A, so that when the sliding cylinder 4 is slid, Since it is possible to grip the main body 41, the collar part that was necessary in the past is unnecessary, and it is possible to eliminate as much as possible the part that may be caught by something when the hose is swung unexpectedly. From this point, it is possible to prevent the coupling from being unexpectedly released even when the hose is unexpectedly shaken.

  Further, no additional work is required to lock the sliding of the push ring portion 40, and it is possible to prevent unintentional release of the coupling even at a site requiring quickness such as a fire site. Is possible.

  A second embodiment of the present invention will be described with reference to FIGS. The difference between the present embodiment and the first embodiment is that the latching groove 25 is used as the latching portion instead of the latching projection 24, and that the spring member 49 is used as the biasing means instead of the elastic ring 46. Is a point. About the structure represented with the same code | symbol as 1st Embodiment, since it is the same as that of the same embodiment, description is abbreviate | omitted.

  The body portion 41 of the sliding cylinder 4 is provided with a groove portion 47 extending in the circumferential direction A2, and a lock lever 48 is pivotally supported on the wall portion 47a of the groove portion 47 in a rotatable manner. The lock lever 48 has substantially the same structure as the lock lever 44 of the first embodiment, and has a claw portion 48a at one end thereof.

  The insertion portion 20 of the metal fitting 2 has an outer surface that is continuous with the base end 1b side of the sliding portion 23, and a position facing the groove portion 47 when the sliding cylinder 4 is positioned on the base end 1b side. A latching groove 25, which is an example of a latching portion, is provided. The latching groove 25 is a circumferential groove and is provided so as to be able to engage with the claw portion 48 a of the lock lever 48.

  The lock lever 48 is attached with a ridge 49 as an example of an urging means for holding the hook portion 48 a and the hook groove 25. The elongated body 49 urges the claw portion 48a toward the center of the metal fitting 2 and thereby holds the claw portion 48a and the latching groove 25 in engagement. When the lock lever 48 is pressed in the direction of the arrow A3 by a finger or the like, the striation body 49 is elastically deformed and the lock lever 48 is rotated, so that the engagement between the claw portion 48a and the latch groove 25 is released. It is like. In the present embodiment, the strip 49 is provided as a leaf spring, but other strips such as a coil spring can be selected as appropriate.

  Although this invention was demonstrated based on the said embodiment, this invention is not limited to the said embodiment, In the range which does not change the summary of invention, it can change suitably. For example, in the above-described embodiment, the engagement protrusion 22 is provided on the metal fitting 2 and the claw 31 is provided on the receiving metal fitting 3 side, but the claw 31 is provided on the metal fitting 2 and the engagement protrusion 22 is provided on the metal fitting 3. You may do it. In this case, the receiving tube 3 is passed through the sliding cylinder 4.

DESCRIPTION OF SYMBOLS 1 Connection metal fitting 1a Tip 1b Base end 2 Insertion metal 20 Insertion part 21 Hose coupling part 22 Engagement protrusion 23 Sliding part 24 Latching protrusion 24a Tapered surface 25 Latching groove 3 Receiving metal 30 Hole part 31 Claw 31a Tapered surface 32 Hose joint 33 Claw ridge 34 Recess 4 Slide cylinder 40 Push ring portion 41 Main body portion 42 Groove portion 42a Wall portion 43 Circumferential groove 44 Lock lever 44a Claw portion 45 Finger insertion portion 46 Elastic ring 47 Groove portion 47a Wall portion 48 Lock lever 48a Claw portion 49 Streak 5 Concave A1 Axial direction A2 Pressing direction A3 Pressing direction F Channel

Claims (7)

A fitting having an engaging protrusion and a sliding portion continuous with the engaging protrusion;
A receiving bracket having a nail,
A sliding cylinder having a push ring portion in which the fitting is loosened, and
The claw is provided so as to be able to engage with the engaging protrusion when the metal fitting is inserted into the receiving metal fitting,
The push ring portion is provided so as to be slidable along the sliding portion by sliding the sliding cylinder,
A coupling fitting that can release the engagement between the claw and the engagement protrusion by sliding the push ring part,
The fitting has a latching portion,
The sliding cylinder has a hooking portion and a biasing means for the hooking portion,
The engagement portion is provided so as to be rotatable and engageable with the engagement portion,
The urging means holds the engagement between the engagement portion and the engagement portion,
A coupling fitting, wherein the engagement between the engagement portion and the engagement portion can be released by rotating the engagement portion. The latching portion is a latching protrusion or a latching groove,
The coupling fitting according to claim 1, wherein the hook portion includes a hook portion that can be hooked with the hook protrusion or the hook groove.   The coupling metal fitting according to claim 1, wherein the biasing means is an elastic ring provided so as to extend in a circumferential direction of the sliding cylinder.   The coupling metal fitting according to claim 1, wherein the urging means is a striated body. The insertion fitting has the claw instead of the engagement protrusion and the sliding portion,
The receiving bracket has the engaging protrusion and the sliding portion instead of the claw,
The sliding cylinder has the catch metal loosely inserted instead of the insert metal fitting,
The coupling fitting according to any one of claims 1 to 4, wherein the hooking portion is provided on the receiving bracket instead of the insertion fitting.   A metal fitting used for the fitting according to any one of claims 1 to 5.   A sliding cylinder characterized in that it is used for the fitting according to any one of claims 1 to 5.

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