JP3148104U - Plug-in hose fitting - Google Patents

Abstract

To provide a plug-in hose joint capable of improving the strength of an engaging protrusion provided on a male joint, solving problems caused by scratches and wear, and maintaining weight reduction. A male joint is provided with an engagement protrusion 17 provided around an outer peripheral surface of an end portion of a male joint main body 16, and a connection release push ring 18 is externally fitted on the outer periphery of the male joint main body 16 so as to be movable in the axial direction. 12 and a socket portion 22 that is externally fitted to the engagement protrusion 17 of the male joint 12 is provided on one end side of the female joint main body 21, and the socket portion 22 is secured against the engagement protrusion 17 on the inner periphery thereof. It is a plug-in type hose joint formed by a combination with a female joint 13 provided with a locking claw 24 that engages in the direction, and the male joint body 16 is formed using aluminum, and is formed on the outer periphery of the male joint body 16. The provided engagement protrusion 17 was formed using brass or gun metal harder than aluminum. [Selection] Figure 1

Description

  The present invention relates to a plug-in hose joint for connecting a fire hose.

  As shown in FIG. 4, the plug-in hose joint 1 used to connect the fire hoses to each other is engaged with an outer protrusion on the other end side of the male joint body 2 to which the fire hose a on one end side is connected. 3, a male joint 5 that is externally fitted to the outer periphery of the male joint body 2 so that the connection release pusher 4 can be moved in the axial direction, and a female joint body 6 that connects the other fire hose b to one end side. On the other end side, a socket portion 7 that is fitted on the engagement protrusion 3 of the male joint body 2 is provided, and the socket portion 7 can be protruded and retracted at all times with respect to the inner peripheral surface. It has a combined structure with a female joint 9 provided with a locking claw 8 made of brass that engages with the engaging protrusion 3 in the retaining direction and releases the engagement by pushing the connection release push ring 4.

  To connect and fix one fire hose a to the male joint body 2, connect and fix the other fire hose b to one end of the female joint body 6, and connect one fire hose a and the other fire hose b, 2 is pushed into the socket portion 7 of the female joint body 6, the engaging ridge 3 spreads the locking claw 8, and when this engaging ridge 3 passes, By returning 8 to the protruding position, the engaging protrusion 3 and the locking claw 8 are engaged in the retaining direction, and the one fire hose a and the other fire hose b are connected.

  Further, in order to disconnect the one fire hose a and the other fire hose b, the connection release pusher 4 provided on the male joint body 2 may be pushed into the socket portion 7 of the female joint 9 to release the connection. By making the latching claw 8 into the immersive position with the push ring 4, the latching claw 8 can be disengaged from the engaging protrusion 3, and the one fire hose a and the other fire hose b can be pulled apart.

  By the way, in recent years, various types of fire fighting equipment have been required to be lighter, and in terms of materials, the use of aluminum has been shifted from brass and gunmetal. In the conventional plug-in hose joint 1 as described above, a male joint 5 is used. Aluminum is used to form the female joint 9. For example, the specific structure of the male joint 5 is that the male joint body 2 is formed of aluminum, and the engagement protrusion 3 is connected to the end of the male joint body 2 in advance. The extension portion thus formed is folded back to the outer diameter side, and the folded portion is formed on the outer circumferential surface to form an annular ridge.

  In the plug-in hose joint 1 as described above, when the engaging protrusion 3 of the male joint 5 is pushed into the socket portion 7 of the female joint 9 when the hose is connected, the outer peripheral surface of the engaging protrusion 3 becomes the locking claw 8. The engagement protrusion 3 formed of aluminum is soft in material, and the outer diameter surface is rubbed with the locking claw 8 made of brass while being repeatedly connected and disconnected. If the outer surface of the engagement protrusion 3 is scratched or worn, water leakage will occur at the time of connection. For this reason, the plug-in hose joint 1 There is a problem of shortening the service life.

  Therefore, the problem of this device is to improve the strength of the engaging ridge provided on the male joint, solve the problem caused by scratches and wear, and reduce the weight, resulting in a longer life. An object of the present invention is to provide a plug-in hose joint that can be used.

  In order to solve the above-mentioned problems, the present invention provides an engaging protrusion on the outer peripheral surface of the other end of the male joint body connecting the hose on one end side, and a connection release push ring is provided on the outer periphery of the male joint body. A male joint that is externally fitted so as to be movable in a direction, and a socket part that is externally fitted to the engagement protrusion of the male joint is provided on one end of the cylindrical female joint body. The hose joint is formed by a combination with a female joint provided with a latching claw that engages in the retaining direction with respect to the inserted engagement protrusion and releases the engagement by pushing the connection release push ring. The male joint body is made of aluminum, and the engaging protrusion provided on the outer periphery of the male joint body is made of a material harder than aluminum.

  In addition, a male screw is provided on the outer peripheral surface of the other end side of the male joint body, and the engagement protrusion is formed in a ring shape having an inner diameter that is fitted on the male joint body, and the engagement protrusion is formed on the male joint body. It can be set as the structure attached to the outer peripheral surface of the other end side by screw connection.

  The engaging protrusions may be formed using brass or gun metal, or the engaging protrusions may be chrome plated.

  Here, the male joint body of the male joint is formed in a straight cylindrical shape with the inside serving as a fluid passage, and a stop ring is provided on the outer peripheral surface of one end to prevent the connection release pusher from coming off, and the connection release. The press ring is made of aluminum and is formed in an L-shaped cross section with a cylindrical portion fitted on the male joint main body and a flange portion provided on an end portion on the opposite side to the engaging protrusion of the cylindrical portion.

  The engaging protrusion is formed in a ring shape having an inner diameter that fits outside the male joint body and an outer diameter that fits inside the socket of the female joint. Further, an end wall whose inner diameter coincides with the inner diameter of the male joint body is provided around the inner periphery of the engaging protrusion, and a male screw is provided on the outer periphery of the male joint body, and a female screw is provided on the inner diameter of the engaging protrusion. The engaging ridge is fixed to the male joint body by being processed and screwed into the male joint body until the end wall comes into contact with the other end surface of the male joint body by the male screw and the female screw.

  According to this device, the male joint body in the plug-in hose joint is formed of aluminum, and the engagement protrusion provided on the outer periphery of the male joint body is formed of a material harder than aluminum. The strength is improved, and it is possible to prevent the outer diameter surface of the engaging ridge from being scratched or worn even when the female joint is repeatedly inserted and removed. It is possible to prevent water leakage due to scratches and wear, and as a result, it is possible to extend the service life while minimizing the cost increase of the plug-in hose joint.

  In addition, since the engaging ridge is attached to the male joint body by screw connection, the mounting work is easy, and chrome plating is applied to the engaging ridge to improve the slipping, so that the fitting is fitted to the female joint. The operation can be performed smoothly.

  Hereinafter, embodiments of the present invention will be described based on illustrated examples.

  As shown in FIGS. 1 to 3, the plug-in hose joint 11 of the present invention includes a male joint 12 attached to one end of the fire hose a and a female joint attached to the end of the other fire hose b. It is formed by 13 combinations.

  The male joint 12 is formed in a cylindrical shape and has a hose connection portion 15 on one end side of a straight tube portion 14 in which the inside is a fluid passage to form a male joint body 16, and an outer periphery on the other end side of the straight tube portion 14. An engaging protrusion 17 is provided around the surface, and a connection release pusher ring 18 is externally fitted to the outer periphery of the straight cylindrical portion 14 so as to be movable in the axial direction.

  The male joint body 16 and the connection release pusher wheel 18 use aluminum as a material to reduce weight and reduce costs, and the engagement protrusion 17 uses a material harder than aluminum, for example, brass or gun metal. The engaging protrusion 17 is formed and chrome plated.

  The engaging protrusion 17 is formed in a ring shape having an inner diameter that fits into the straight tube portion 14 of the male joint body 16 and an outer diameter that fits into a socket of the female joint 13 described later. The outer periphery on one end side of the strip 17 is an arc edge or a chamfered edge, and an end wall 17 a whose inner diameter matches the inner diameter of the straight tube portion 14 is provided around the inner periphery of the engagement protrusion 17. A male screw 19 is machined on the outer periphery and a female screw 20 is machined on the inner diameter of the engaging ridge 17, and the engaging ridge 17 is connected to the straight tube portion 14, and the end wall 17 a is straight tube portion 14 by the male screw 19 and the female screw 20. The engaging protrusion 17 is fixed to the straight tube portion 14 by screwing in until it comes into contact with the other end surface.

  The connection release pusher wheel 18 includes a cylindrical portion 18a having an inner diameter that is fitted on the straight cylindrical portion 14 of the male joint body 16, and a flange portion 18b provided on the outer periphery of the end portion of the cylindrical portion 18a opposite to the engaging protrusion 17. Therefore, it is formed in an L-shaped cross section, and is movable between the engaging protrusion 17 and the stopper member 14a provided on the outer periphery of the straight tube portion 14.

  The female joint 13 has the same structure as the conventional one, and has an inner diameter that fits externally on the engagement protrusion 17 of the male joint body 16 on the other end side of the female joint body 21 that connects the fire hose b on one end side. The socket portion 22 is provided, and the inside of the socket portion 22 is elastically urged by a spring 23 with respect to the inner peripheral surface of the socket portion 22 so that it can be projected and retracted. On the other hand, there are provided a brass pawl 24 that engages in the retaining direction and releases the engagement by pushing in the connection release pusher 18, and a seal member 25 in which the outer peripheral surface of the engagement protrusion 17 is in close contact. Yes.

  In addition, the connection structure of the fire hoses a and b with respect to the male joint 12 and the female joint 13 is not limited to illustration, What is necessary is just to employ | adopt arbitrary connection structures.

  The plug-in type hose joint 11 of the present invention is configured as described above, and a male joint 12 is attached to one end of the fire hose a, which is connected to each other, and a female joint is attached to the end of the other fire hose b. 13 is attached.

  In order to connect both fire hoses a and b, the straight tube portion 14 of the male joint 12 is inserted into the socket portion 22 of the female joint 13.

  Since the engaging ridge 17 is provided on the outer periphery of the end portion of the straight cylindrical portion 14, the outer peripheral surface of the engaging ridge 17 pushes and opens the locking claw 24 when inserted into the socket portion 22. When the engaging ridge 17 passes through the locking claw 24, the locking claw 24 returns to the reduced diameter position by the action of the spring 23 and is engaged with the rear end step portion of the engaging ridge 17. As a result, the male joint 12 and the female joint 13 are joined in the axial direction in a state of being prevented from coming off, and the outer peripheral surface of the engaging protrusion 17 is fitted into and closely contacted with the seal member 25, so that both fire hoses a and b is connected.

  When the male joint 12 and the female joint 13 are connected as described above, the outer peripheral edge of the engaging ridge 17 is an arc edge or a chamfered edge, and the outer surface of the engaging ridge 17 is slippery. Since it is chrome-plated so that it may be favorable, the engagement protrusion 17 can be smoothly approached with respect to the latching claw 24. FIG.

  Further, the engaging protrusion 17 is formed using brass or gunmetal, and its outer surface is chrome-plated. Therefore, the engaging protrusion 17 is superior in strength to the male joint body 16 and slides on the locking claw 24. However, it is possible to suppress the occurrence of scratches and wear on the outer peripheral surface, thereby preventing the occurrence of water leakage from the connecting portion between the male joint 12 and the female joint 13, and as a result, the plug-in hose. It is possible to extend the life while maintaining the weight reduction of the joint 11 and suppressing the cost increase as much as possible.

  In order to separate the male joint 12 and the female joint 13 in the connected state, the connection release push ring 18 fitted on the male joint 12 is slid toward the female joint 13, and the cylindrical portion 18 a is engaged with the inner periphery of the socket portion 22. When it is inserted between the mating ridges 17, the locking claws 24 are pushed open on the outer periphery of the cylindrical portion 18 a to expand the diameter, and the engagement of the locking claws 24 with the rear ends of the engagement ridges 17 is released. If the male joint 12 is pulled out from the female joint 13 in this state, the connection can be released.

The front view which shows the state before the connection which notched the principal part of the plug-in type hose coupling which concerns on this device Enlarged front view of the plug-in hose joint with the main part showing the male joint cut out. Exploded perspective view showing male joint in plug-in hose joint The front view which shows the state before the connection which cut off some which shows the conventional plug-in type hose coupling

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Plug-in type hose coupling 12 Male joint 13 Female joint 14 Straight cylinder part 15 Hose connection part 16 Male joint main body 17 Engagement protrusion 18 Connection release push ring 19 Male screw 20 Female thread 21 Female joint main body 22 Socket part 23 Spring 24 Locking claw 25 Seal member

Claims (3)

A male joint in which an engagement protrusion is provided on the outer peripheral surface of the other end of the male joint main body to which the hose is connected to one end, and the connection release pusher wheel is fitted on the outer periphery of the male joint main body so as to be movable in the axial direction. When,
A socket portion is provided on one end side of the cylindrical female joint main body so as to be fitted on the engagement protrusion of the male joint, and is prevented from being removed from the engagement protrusion inserted on the inner periphery of the socket portion. In the plug-in hose joint, which is formed by a combination with a female joint provided with a locking claw that engages in a direction and releases the engagement by pressing the connection release push ring,
The plug-type hose joint is characterized in that the male joint body is formed of aluminum, and the engagement protrusion provided on the outer periphery of the male joint body is formed of a material harder than aluminum.   A male screw is provided on the outer peripheral surface of the other end of the male joint main body, and the engagement protrusion is formed in a ring shape having an inner diameter that is externally fitted to the male joint main body. The engagement protrusion is formed at the other end of the male joint main body. The plug-in type hose joint according to claim 1, wherein the plug-in hose joint is attached to the side outer peripheral surface by screw connection.   The plug-in type hose coupling according to claim 1 or 2, wherein the engaging protrusion is formed using brass or gun metal, and the engaging protrusion is chrome-plated.

Images