JP3218066U - Firefighting joints and their receiving devices - Google Patents

Abstract

The present invention provides a structure capable of suppressing damage to an outer peripheral end portion and bruise of a handler by the outer peripheral end portion in a structure portion on the outer peripheral side around a receiving port of a joint for a fire fighting joint.
A receiver for a joint joint for fire fighting has a first step portion 23p1 having a step surface facing the front end side in the axial direction, and an axial direction base as a structure provided on the outermost peripheral side around the receiving port. An outer peripheral surface portion 23a configured integrally with the surface of a hard material provided with a second step portion 23p2 having a stepped surface facing the end side at a portion other than the outer peripheral end portions 23b and 23c, and mounted on the outer peripheral surface portion 23a The first step portion 23p1 and the adjacent regions on both sides in the axial direction, and the second step portion 23p2 and the adjacent regions on both sides in the axial direction are integrated together, and is made of a softer material than the outer peripheral surface portion 23a. And a protective member 27 fitted in a manner to be included.
[Selection] Figure 2

Description

  The present invention relates to a joint joint for fire fighting and its receiving device.

  Conventionally, various types of firefighting joints have been used as firefighting hose joints to connect firefighting hoses, or firefighting equipment joints to connect equipment such as pipes. Yes. As shown in FIGS. 7 and 8, the plug-in type coupling joint includes an insert 10 and a receiver 20 that are configured to be detachable from each other. When the engaging claw 24 is inserted into the receiving port 20a of the receiving device 20 that can be moved in and out, the locking step portion 11b at the proximal end of the distal end cylindrical portion 11 of the insertion device 10 protrudes inward by the leaf spring 25. The engaging claw 24 urged in the direction is engaged and the locking step portion 11b is prevented from coming off, thereby being coupled to each other, and the coupled portion is sealed by the rubber packing 28 (for example, below) Patent Document 1).

  Here, in the receiving tool 20, a protective member 27 such as a rubber band called a tire is mounted on the outer peripheral surface of the fastening ring 23 on the outermost peripheral side around the receiving port 20a. The protective member 27 is attached so as to be fitted into an annular groove 23 a formed on the outer peripheral surface of the fastening ring 23.

JP 2003-185079 A

  As described above, when the protective member 27 is fitted in the annular groove 23a of the fastening ring 23, the outer peripheral ends 23b and 23c in the axial direction of the fastening ring 23 are exposed to the outside, and the outer circumferences thereof Since the end portion has a corner portion at a position higher than the bottom portion of the protective member 27, there is a problem that the outer peripheral end portions 23 b and 23 c are easily damaged by being dragged while connected to a fire hose or the like. . Moreover, since the outer peripheral ends 23b and 23c are likely to hit the limbs of the handler, there is a high possibility that the handler will be bruised. The cover members 8 and 9 of the joint disclosed in Patent Document 1 are slightly different in shape from the protective member 27 in FIGS. 7 and 8, but are the same in that they are mounted in the annular groove. At least one of the outer peripheral ends is exposed and arranged at a high position, which is no different from the above.

  Therefore, the subject of the present invention is a structure capable of suppressing damage to the outer peripheral end portion and bruise of the operator by the outer peripheral end portion in the outer peripheral side portion around the receptacle of the joint joint for fire fighting. Is to provide.

  In order to solve the above-mentioned problem, the joint for fire fighting of the present invention has an insert having an insert and a receiving port configured to receive the insert, and can be connected in a state in which the insert is received. In the joint for fire fighting comprising the receiver configured as described above, the receiver is provided with a step surface facing the distal end side in the axial direction as a structure provided on the outermost peripheral side around the receiving port. An outer peripheral surface part integrally formed with a surface of a hard material provided with a step part and a second step part provided with a step surface facing the axial base end side in a part other than the outer peripheral end part, and on the outer peripheral surface part The first step portion and adjacent regions on both sides in the axial direction, and the second step portion and adjacent regions on both sides in the axial direction are integrated together. Protective part that fits in a way that is included And, with a.

  In this invention, it is preferable that the said protection member includes the whole range of the axial direction of the said outer peripheral surface part integrally.

  In the present invention, the outer peripheral surface portion includes a protruding portion that protrudes from an adjacent region on the distal end side in the axial direction and an adjacent region on the proximal end side in the axial direction, and the first step portion and the second step portion include It is preferable that the convex portion includes an outer portion on the distal end side in the axial direction and an outer portion on the proximal end side in the axial direction.

  In this invention, the said outer peripheral surface part is equipped with the recessed part which was immersed more than the adjacent area | region of the axial direction front end side, and the adjacent area | region of the axial direction proximal end, and the said 1st step part and the said 2nd step part are the said recessed parts. It is preferable that it is comprised by the inner side part of the axial direction front end side of this, and the inner side part of the axial direction base end side.

  Further, a fire-fighting joint joint receiver according to the present invention has a power-receiving hole for receiving the tool spigot, and the fire-fighting joint joint receiver is configured to be able to be joined in a state in which the tool is received. In the above, the structure provided on the outermost peripheral side around the receiving port is a first step portion having a step surface facing the distal end side in the axial direction and a second step surface having a step surface facing the proximal end side in the axial direction. The outer peripheral surface portion is formed of a hard material surface provided in a portion other than the outer peripheral end portion, and is mounted on the outer peripheral surface portion, and is configured of a softer material than the outer peripheral surface portion, and And a protection member that fits in a manner that integrally includes both the first step portion and adjacent regions on both sides in the axial direction, and the second step portion and adjacent regions on both sides in the axial direction.

  According to this device, the protective member mounted on the outer peripheral surface portion integrates the first step portion on the outer peripheral surface portion and the adjacent regions on both sides in the axial direction, and the second step portion and adjacent regions on both sides in the axial direction. Since it is not necessary to expose the outer peripheral end portion of the outer peripheral surface portion to the outside, or even if the outer peripheral end portion of the outer peripheral surface portion is exposed, it is not necessary to provide it at a high position. In the structure portion on the outer peripheral side around the receiving port of the fire-fighting joint joint, damage to the outer peripheral end, bruise of the operator by the outer peripheral end, and the like can be suppressed.

It is a longitudinal cross-sectional view which shows the joint state of 1st Embodiment of the joint joint for fire fighting which concerns on this device. It is an expanded sectional view which shows the structure of the protection member on the outer peripheral part of the receiver of 1st Embodiment. It is an expanded sectional view which shows the structure of the protection member on the outer peripheral part of the receiver of 2nd Embodiment. It is an expanded sectional view which shows the structure of the protection member on the outer peripheral part of the receiver of 3rd Embodiment. It is an expanded sectional view which shows the structure of the protection member on the outer peripheral part of the receiver of 4th Embodiment. It is an expanded sectional view which shows the structure of the protection member on the outer peripheral part of the receiver of 5th Embodiment. It is an expanded sectional view which shows the structure of the protection member on the outer peripheral part of the receiver of 6th Embodiment. It is a longitudinal cross-sectional view of the conventional joint for fire fighting. It is a perspective view of the conventional joint joint for fire fighting.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, a first embodiment of a firefighting joint according to the present invention will be described with reference to FIGS.

  The firefighting joint 1 according to the first embodiment includes an insertion tool 10 and a receiving tool 20. The insertion tool 10 has an insertion opening 10 a having a distal end cylindrical portion 11 on the distal end side (left side in the drawing) of the insertion body 12. The distal end cylindrical portion 11 has an outer peripheral surface 11a having an outer diameter larger than the outer diameter of the insertion tool main body 12, and a locking step portion 11b provided on the axial base end side (right side in the drawing). The receiving device 20 includes a receiving port 20a that can receive the insertion port 10a, and includes a locking claw 24 that is removably attached to the inside of the receiving port 20a. The locking claw 24 is urged by a leaf spring 25 in a direction protruding inward. A fastening ring 23 is disposed on the outermost peripheral side of the receptacle 20 around the receiving port 20a. The fastening ring 23 is fixed to the receiver body 22 by screwing or the like.

  As shown in FIG. 2, the outer peripheral surface portion 23 a of the fastening ring 23 of the present embodiment as a whole has a range from the axial front end portion 23 b to the axial base end portion 23 c, which are outer peripheral end portions on the opposite side. Constructed in a cylindrical surface. However, the convex portion 23p is provided at an intermediate position along the axial direction (which may be a position biased to any of the axial directions (left and right in the drawing); the same applies hereinafter). This convex part 23p is provided with a surface higher than the adjacent area | region of the axial direction front end side (illustration right side) and the adjacent area | region of an axial direction base end side (illustration left side). In addition, the outer side portion on the tip end side in the axial direction of the convex portion 23p is a first step portion 23p1 configured by a stepped surface toward the tip end side in the axial direction. Furthermore, the outer side portion on the axial base end side of the convex portion 23p is a second step portion 23p2 constituted by a step surface directed toward the axial base end side. In the illustrated example, the step surfaces of the first step portion 23p1 and the second step portion 23p2 are inclined surfaces facing obliquely upward on the axial direction front end side and the axial direction base end side, respectively. Thereby, the mounting work and removal work of the protection member 27 can be facilitated. This point is the same in the following embodiments. However, each of the step surfaces may be a vertical surface, or may be an inclined surface that faces obliquely downward, contrary to the above. Further, the stepped surface is preferably a flat surface as shown in the illustrated example, but is not limited to this, and may be a rough surface or an uneven surface having an uneven structure, and a plurality of stepped portions. The composite surface comprised by these may be sufficient.

  The protective member 27 is attached to the outer peripheral surface portion 23a in a manner that fits with the convex portion 23p. The protection member 27 includes a lower surface 27a having a surface shape that matches the outer peripheral surface portion 23a, and an upper surface 27b provided on the opposite side of the lower surface 27a and exposed to the outside. The lower surface 27a includes a concave portion 27d that fits with the convex portion 23p. The protection member 27 is an inner surface that is configured so that the convex portion 23p and the concave portion 27d are fitted to each other in the state of being attached to the fastening ring 23, and faces the first step portion 23p1 (preferably closely contacted, the same applies hereinafter). A first step portion 27d1 and a second step portion 27d2 that is an inner surface facing the second step portion 23p2 are provided. The upper surface 27b has a gentle chevron-shaped contour shape from the axial front end side to the axial base end side.

  In the present embodiment, the protection member 27 is integrally formed so as to cover the entire range in the axial direction from the axial distal end portion 23b to the axial proximal end portion 23c of the outer peripheral surface portion 23a. Thereby, since the outer peripheral edge part of the fastening ring 23 is not exposed, it is suppressed that the said outer peripheral edge part is damaged, or a handler is bruised by the said outer peripheral edge part.

  In FIG. 3, the mounting structure of the outer peripheral surface part 23a of 2nd Embodiment and the protection member 27 mounted on this outer peripheral surface part 23a is shown. In the second embodiment, the configuration other than the structure shown in FIG. 3 is the same as that of the first embodiment. In the second embodiment, a concave portion 23d is provided at an intermediate position in the axial direction of the outer peripheral surface portion 23a, and a first step portion 23d1 and a second step portion 23d2 which are inner side surfaces on both sides in the axial direction of the concave portion 23d are formed. Has been. On the other hand, the lower surface 27a of the protective member 27 includes a convex portion 27p that is aligned with the outer peripheral surface portion 23a and fits into the concave portion 23d. A first step portion 27p1 and a second step portion 27p2 that are outer portions on both sides in the axial direction are formed on the convex portion 27p. In the mounted state of the protective member 27, the first step portion 23d1 and the first step portion 27p1 face each other, the second step portion 23d2 and the second step portion 27p2 face each other, and the concave portion 23d and the convex portion The part 27p is fitted.

  FIG. 4 shows a mounting structure of the outer peripheral surface portion 23a of the third embodiment and the protective member 27 mounted on the outer peripheral surface portion 23a. In the third embodiment, configurations other than the structure shown in FIG. 4 are the same as those in the first embodiment. In the third embodiment, similarly to the first embodiment, a convex portion 23p is provided at an intermediate position in the axial direction of the outer peripheral surface portion 23a, and the first step portion which is an outer portion on both sides in the axial direction of the convex portion 23p. 23p1 and the second step portion 23p2 are formed. However, in the first embodiment, the width in the axial direction of the convex portion 23p is smaller than half of the entire width of the outer peripheral surface portion 23a, whereas in the third embodiment, the width in the axial direction of the convex portion 23p is smaller than that of the outer peripheral surface portion 23a. It differs in that it is larger than half the full width. Correspondingly, the width in the axial direction of the recess 27d formed on the lower surface 27a of the protection member 27 is also larger than that in the first embodiment. When the protective member 27 covers the entire axial width of the outer peripheral surface portion 23a as in the illustrated example, the axial width of the concave portion 27d of the protective member 27 is greater than half the total axial width of the outer peripheral surface portion 23a. .

  FIG. 5 shows a mounting structure of the outer peripheral surface portion 23a of the fourth embodiment and the protective member 27 mounted on the outer peripheral surface portion 23a. In the fourth embodiment, configurations other than the structure shown in FIG. 5 are the same as those in the first embodiment. In the fourth embodiment, a concave portion 23d is provided at an intermediate position in the axial direction of the outer peripheral surface portion 23a, and a first step portion 23d1 and a second step portion 23d2 that are inner portions on both sides in the axial direction of the concave portion 23d are formed. Has been. On the other hand, the lower surface 27a of the protective member 27 includes a convex portion 27p that is aligned with the outer peripheral surface portion 23a and fits into the concave portion 23d. In this embodiment, similarly to the convex portion 23p of the third embodiment, the width in the axial direction of the concave portion 23d is formed to be larger than half of the entire width in the axial direction of the outer peripheral surface portion 23a. Moreover, the convex part 27p is provided with the width | variety of the axial direction corresponding to the width | variety of the axial direction of the said recessed part 23d similarly to the recessed part 27d of 3rd Embodiment.

  In FIG. 6, the mounting structure of the outer peripheral surface part 23a of 5th Embodiment and the protection member 27 with which this outer peripheral surface part 23a was mounted | worn is shown. In the fifth embodiment, configurations other than the structure shown in FIG. 6 are the same as those in the first embodiment. In the fifth embodiment, the outer peripheral surface portion 23a is provided with a plurality (two in the illustrated example) of convex portions 23p in the axial direction, and each of the convex portions 23p is a first outer portion on both sides in the axial direction. The step portion 23p1 and the second step portion 23p2 are formed. The lower surface 27a of the protection member 27 is provided with a plurality of concave portions 27d having positions and sizes corresponding to the plurality of convex portions 23p.

  In FIG. 7, the mounting structure of the outer peripheral surface part 23a of 6th Embodiment and the protection member 27 mounted on this outer peripheral surface part 23a is shown. In the sixth embodiment, configurations other than the structure shown in FIG. 7 are the same as those in the first embodiment. In the sixth embodiment, a plurality of (two in the illustrated example) concave portions 23d are provided in the axial direction on the outer peripheral surface portion 23a, and each of the concave portions 23d is a first step that is an inner portion on both sides in the axial direction. And a second step portion are formed. A plurality of convex portions 27p having positions and sizes corresponding to the plurality of concave portions 23d are provided on the lower surface 27a of the protection member 27.

  In each of the above-described embodiments, as the outermost peripheral structure around the receiving port 20a of the receiving device 20, the first step portion including the step surface facing the distal end side in the axial direction and the step surface facing the base end side in the axial direction And a second step portion provided with an outer peripheral surface portion 23a provided at a portion other than the outer peripheral end portions 23b and 23c, and mounted on the outer peripheral surface portion 23a, and made of a softer material than the outer peripheral surface portion 23a, And a protective member 27 that fits together in such a manner that the first step portion and adjacent regions on both sides in the axial direction and the second step portion and adjacent regions on both sides in the axial direction are integrally included. As a result, it is not necessary to expose the outer peripheral ends 23b and 23c of the outer peripheral surface portion 23a to the outside, or even if the outer peripheral ends 23b and 23c are exposed to the outside, it is not necessary to provide them at high positions. Damage to the outer peripheral ends 23b, 23c exposed in the axial direction from the protective member 27 of the coupling joint receiver 20 and the bruise of the handler by the outer peripheral ends 23b, 23c can be suppressed.

  In each embodiment, the retention characteristic of the protection member 27 with respect to the outer peripheral surface portion 23a is almost the same as the conventional structure. In particular, since the first step portion and the second step portion on the outer peripheral surface portion 23a are completely included by the protective member 27, at least one of these step portions is separated from at least one of the outer peripheral end portions 23b and 23c. Since they are separated in the axial direction, even if an external force is applied in the vicinity of one end in the axial direction of the upper surface 27b of the protection member 27, the fitting structure between the outer peripheral surface portion 23a and the protection member 27 is hardly affected. For this reason, even if the step amount of each step portion is relatively small as in the illustrated example, or even if the step surface of each step portion is an inclined surface directed obliquely upward as described above, the outer peripheral surface portion 23a. The holding characteristic of the protection member 27 against the resistance is not easily lowered.

  Note that the fire fighting joint and the receiving device thereof according to the present invention are not limited to the illustrated examples described above, and various modifications can be made without departing from the scope of the present invention. For example, in each of the embodiments described above, the fitting structure between the outer peripheral surface portion 23a of the fastening ring 23 fixed to the main body 22 of the receiver 20 and the protective member 27 has been described. Not only the ring 23 but the fitting structure only has to be provided in the outermost peripheral portion around the receiving port 20a of the receiving tool 20. Further, in each of the above embodiments, the entire width in the axial direction of the outer peripheral surface portion 23a and the entire width in the axial direction of the protective member 27 are set to coincide with each other, and the protective member 27 is in the state of matching with each other. However, the present invention is not limited to such a mode. For example, even if the overall width in the axial direction of the protective member 27 is slightly shorter than the overall width in the axial direction of the outer peripheral surface portion 23a. Well, it may be a little longer. Furthermore, in each said embodiment, although the latching nail | claw 24 of the receptacle 20 engages and couple | bonds with the latching step part 11b of the insertion tool 10, it comprises the insertion tool 10 and a receptacle. It may be a plug-in type coupling joint composed of the tool 20 and is not concerned with the difference in the coupling structure itself.

DESCRIPTION OF SYMBOLS 1 ... Fire-fighting joint, 10 ... Insert, 10a ... Insert, 11 ... End tube part, 12 ... Main body, 14 ... Release member, 20 ... Receptacle, 20a ... Receptacle, 22 ... Main body, 23 ... Fastening ring, 23a ... outer peripheral surface part, 23b, 23c ... outer peripheral end part, 23p ... convex part, 23d ... concave part, 23p1, 23d1 ... first step part, 23p2, 23d2 ... second step part, 24 ... locking claw, 25 ... Leaf spring, 26 ... claw seat, 27 ... protective member, 27a ... lower surface, 27b ... upper surface, 27d ... concave portion, 27p ... convex portion, 27d1, 27p1 ... first step portion, 27d2, 27p2 ... second step portion

Claims (10)

In a firefighting coupling joint comprising: an insertion tool having a slot; and a receiver having a receptacle configured to receive the insertion slot and configured to be coupled in a state in which the insertion tool is received.
The receptacle is a structure provided on the outermost periphery around the receptacle,
The surface of the hard material which provided the 1st step part provided with the level | step difference surface which faced the axial direction front end side, and the 2nd step part provided with the level | step difference surface which faced the axial direction base end side in parts other than an outer peripheral end part. An outer peripheral surface integrally formed with
Mounted on the outer peripheral surface portion and made of a softer material than the outer peripheral surface portion, and the first step portion and adjacent regions on both sides in the axial direction, and the second step portion and adjacent on both sides in the axial direction. Protective members that fit together in a manner that integrally encompasses the region;
Having
Joint for fire fighting. The protective member integrally includes the entire range in the axial direction of the outer peripheral surface portion.
The joint for fire fighting according to claim 1. The outer peripheral surface portion includes a protruding portion that protrudes from an adjacent region on the distal end side in the axial direction and an adjacent region on the proximal end side in the axial direction,
The first stepped portion and the second stepped portion are configured by an outer portion on the axially distal end side and an outer portion on the axially proximal end side of the convex portion,
The joint for fire fighting according to claim 1 or 2. The outer peripheral surface portion is provided with a recessed portion that is deeper than the adjacent region on the axial front end side and the adjacent region on the axial base end side,
The first stepped portion and the second stepped portion are configured by an inner portion on the axially distal end side and an inner portion on the axially proximal end side of the concave portion,
The joint for fire fighting according to claim 1 or 2. The step surface of the first step portion and the step surface of the second step portion are configured with inclined surfaces facing obliquely upward,
The joint for fire fighting according to any one of claims 1 to 4. In the receiving joint of the joint for fire fighting which has a receiving opening for receiving the opening of the inserting tool and is configured to be able to be connected in a state where the inserting tool is received,
As a structure provided on the outermost periphery around the receptacle,
The surface of the hard material which provided the 1st step part provided with the level | step difference surface which faced the axial direction front end side, and the 2nd step part provided with the level | step difference surface which faced the axial direction base end side in parts other than an outer peripheral end part. An integral outer peripheral surface portion composed of:
Mounted on the outer peripheral surface portion and made of a softer material than the outer peripheral surface portion, and the first step portion and adjacent regions on both sides in the axial direction, and the second step portion and adjacent on both sides in the axial direction. Protective members that fit together in a manner that integrally encompasses the region;
Having
Joint connector for firefighting joints. The protective member integrally includes the entire range in the axial direction of the outer peripheral surface portion.
The joint joint receiver for fire fighting according to claim 6. The outer peripheral surface portion includes a protruding portion that protrudes from an adjacent region on the distal end side in the axial direction and an adjacent region on the proximal end side in the axial direction,
The first stepped portion and the second stepped portion are configured by an outer portion on the axially distal end side and an outer portion on the axially proximal end side of the convex portion,
8. A joint joint receiver for fire fighting according to claim 6 or 7. The outer peripheral surface portion is provided with a recessed portion that is deeper than the adjacent region on the axial front end side and the adjacent region on the axial base end side,
The first step portion and the second step portion are constituted by an inner portion on the axially distal end side and an inner portion on the proximal end side in the axial direction of the recess,
8. A joint joint receiver for fire fighting according to claim 6 or 7. The step surface of the first step portion and the step surface of the second step portion are configured with inclined surfaces facing obliquely upward,
A receiving joint for a fire-fighting joint according to any one of claims 6 to 9.

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