WO2021095983A1

WO2021095983A1 - Button-type fitting apparatus for hose connection

Info

Publication number: WO2021095983A1
Application number: PCT/KR2019/017857
Authority: WO
Inventors: 박용운
Original assignee: 주식회사 청호시스템
Priority date: 2019-11-11
Filing date: 2019-12-17
Publication date: 2021-05-20
Also published as: KR102215988B1

Abstract

The present invention provides a button-type fitting apparatus for hose connection, the apparatus comprising: a connection tube body including a seating step and a mounting step which are successively formed to be stepped on the inner circumferential surface thereof; a collet part configured to hold the outer circumferential surface of a hose by using a catching piece protruding from the inner circumferential surface of the rear-side end thereof; a support holder which prevents separation of the collet part; a packing member seated in the seating step of the connection tube body; and a guide member for supporting the packing member and guiding the rear-side end portion of the collet part, in which the catching piece is positioned, to be opened when the collet part is moved by pressurization. Therefore, the present invention enables a hose to be stably connected and smoothly detached without damaging the outer surface of the hose or damaging the fitting apparatus when the hose is detached.

Description

Button-type fitting device for hose connection

The present invention relates to a fitting device, and more particularly, to a new type of fitting device that enables easy and easy connection and extraction of a hose while preventing damage to a seal member.

In general, a hose used to deliver water, such as a water purifier or bidet, is made to be connected to another hose or device (eg, a filter) by a fitting device.

Such a fitting device should be configured to prevent unwanted separation while the hose is connected, and should be constructed in a structure capable of preventing water leakage, and in addition to this, it is most desirable to satisfy simple operability.

Accordingly, various types of fitting devices have conventionally been provided, which are registered utility model no. 20-0159243, registered utility model no. 20-0194982, open utility model no. 20-2010-0007460, and public utility model no. 20. -2011-0007157, Registered Patent No. 10-1127284, Unexamined Patent No. 10-2014-0040315, and Unexamined Patent No. 10-2017-0056944 are provided in various structures.

However, as the fitting device according to the prior art described above is designed with the main purpose of providing a structure that does not take out when simply connecting the hose, if you want to perform maintenance such as replacing the hose, the surface of the hose is damaged. There has been a problem that this occurs or the fitting device is damaged and cannot be used.

That is, the fitting device of the prior art is configured to prevent the hose from being ejected by digging into the outer circumferential surface of the hose when the hose is taken out by arranging the engaging ring made of a metal ring inclined in the direction of insertion of the hose. However, when the hose is taken out, it is inconvenient to perform a forced pulling of the hose with a greater force, or to take out the hose with the locking ring inclined by inserting a separate tool between the hose and the fitting device.

In addition, the conventional fitting device is configured such that a packing member (O-ring or gasket, etc.) provided to prevent leakage of the hose connection portion is coupled to the circumferential surface of the hose or the circumferential surface of the nozzle, so that the hose is connected to the nozzle. There is a problem in that the packing member is often peeled off or out of position in the process of inserting and coupling or inserting and coupling the nozzle into the fitting body.

In addition, in the fitting device of the prior art, damage or contamination occurs due to exposure of the packing member to the outside, and decrease in airtightness due to frequent scratching has occurred.

In addition, in the conventional fitting device, there is a problem that the packing member is more likely to be damaged when a forced physical force is applied due to unsmooth disassembly because there is no structure to prevent inclination when the two nozzles are separated.

The present invention was conceived to solve various problems according to the prior art described above, and an object of the present invention is a new type of hose that can be easily and easily connected and taken out, while preventing damage to the seal member. It is intended to provide a fitting device.

According to the button-type fitting device for hose connection of the present invention for achieving the above object, a nozzle part formed with an outer end of the nozzle to which one hose is connected and an inner end of the nozzle extending from the outer end of the nozzle, and the nozzle part from the periphery of the nozzle part A male body comprising a cylindrical gripping portion formed to surround the inner end of the nozzle; Consisting of an insertion coupling portion inserted into the gripping portion of the mail-shaped body and coupled so that the nozzle inner end of the nozzle portion is inserted therein, and a hose coupling portion which is positioned to be exposed to the outside of the gripping portion and connected to another hose. Female body; And a button unit that is coupled to the holding portion of the mail-shaped body and is installed so that a portion of the body is exposed to the outside, constraining the female-shaped body to the mail-shaped body and releasing the restraint by pressing operation. It features.

Here, an inner mounting groove is formed on an inner circumferential surface of the insertion coupling portion forming the female-type body, and a seal member for airtightness between the insertion coupling portion and the nozzle portion is installed at an inner portion of the inner mounting groove, and the inner mounting groove A take-out prevention cap is installed on the outer part of the inner part to prevent the take-out of the seal member.

In addition, the outer circumferential surface of the seal member is installed so as to be in close contact with the inner mounting groove, and the inner circumferential surface of the seal member is installed so as to be in close contact with the outer circumferential surface of the inner end of the nozzle of the nozzle constituting the male body.

In addition, a constricting groove is formed in the circumferential surface of the female-type body, and the front outer circumferential surface and the rear-side outer circumferential surface of the inserting and engaging part are adjacent to the inner circumferential surface of the gripping part of the male-type body. It is formed to be positioned, the button portion is formed to have an inner diameter larger than the outer diameter of the constraining groove, and is coupled to the constraining groove and installed to be elastically moved in the radial direction of the constraining groove, and a part of the outer peripheral surface of the button part is the mail-shaped body It is characterized in that it is formed to protrude to be exposed to the outside by penetrating through any one circumference of the gripping portion constituting the.

In addition, a receiving protrusion is formed on the circumferential surface of the rear end side of the nozzle part forming the male-shaped body and the hose coupling part forming the female-shaped body, and the nozzle part and the hose coupling part have a corresponding nozzle part or a hose coupling part. When is connected, a pressure holder is provided to hold the outer circumferential surface of the hose and pressurize and restrain the nozzle part or the hose coupling part, and the inner circumferential surface of the tip side of the pressure holder has a larger diameter than the part gripping the hose. In addition to being formed, a receiving groove is formed in the inner circumferential surface of the front end side to which the receiving protrusion is received and caught.

As described above, in the button-type fitting device for hose connection of the present invention, in the end, the button-type fitting device for hose connection of the present invention can easily disconnect the hose, so that replacement or maintenance of the hose can be easily performed. .

In addition, the button-type fitting device for hose connection of the present invention is configured so that the male-type body and the female-type body are combined in a double overlapping structure, and the seal member is stored in a state that is not exposed to the outside. Damage or contamination can be prevented.

In addition, in the button-type fitting device for hose connection of the present invention, since the male-type body and the female-type body are combined in a double overlapping structure, the female-type body is prevented from being separated from each other or inclination of the female-type body when combined. This becomes possible.

1 and 2 are exploded perspective views illustrating a button-type fitting device for connecting a hose according to an embodiment of the present invention.

3 is a combined perspective view showing a button-type fitting device for hose connection according to an embodiment of the present invention

4 is a plan view showing a button-type fitting device for hose connection according to an embodiment of the present invention

5 is a front view showing to explain a button-type fitting device for hose connection according to an embodiment of the present invention

6 is a cross-sectional view showing a button-type fitting device for hose connection according to an embodiment of the present invention

7 is a cross-sectional view illustrating a mail-type body among button-type fitting devices for hose connection according to an embodiment of the present invention.

8 is a cross-sectional view illustrating a female-type body among button-type fitting devices for hose connection according to an embodiment of the present invention.

9 and 10 are cross-sectional views illustrating a main part of a button-type fitting device for connecting a hose according to an embodiment of the present invention to explain a connection state of a hose by a pressure holder.

11 and 12 are exploded perspective views illustrating a button-type fitting device for connecting a hose according to another embodiment of the present invention.

13 is a combined perspective view showing a button-type fitting device for hose connection according to another embodiment of the present invention

14 is a cross-sectional view showing a button-type fitting device for hose connection according to another embodiment of the present invention

Hereinafter, a preferred embodiment of the button-type fitting device for hose connection of the present invention will be described with reference to FIGS. 1 to 14.

On the other hand, in the description of the embodiment, descriptions of directions such as front and rear are described based on the coupling directions of each body. That is, the coupling direction side is the front, and the separation direction side is the rear.

For example, in the case of a female body, the left side is rear in the drawing and the right side is front in the drawing, and in the case of the mail type body, the right side is front and the left side is rear in the drawing.

1 and 2 are exploded perspective views illustrating a button-type fitting device for hose connection according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view illustrating a button-type fitting device for hose connection according to an embodiment of the present invention. Fig. 4 is a plan view illustrating a button-type fitting device for hose connection according to an embodiment of the present invention, and Fig. 5 is a view showing a button-type fitting device for hose connection according to an embodiment of the present invention. It is a front view, and FIG. 6 is a cross-sectional view showing a button-type fitting device for hose connection according to an embodiment of the present invention.

As shown in these drawings, the button-type fitting device for hose connection according to the embodiment of the present invention comprises a male body 100, a female body 200, and a button part 300. It consists of including. Through this, the gripping portion 120 is formed in the male-type body 100 to surround the hose coupling part 210 of the female-type body 200, and the inner end of the nozzle part forming the male-type body 100 The seal member 410 is provided on the opposite surface between the 112 and the insertion coupling part 220 forming the female-type body 200 to prevent damage or contamination due to the exposure of the seal member 410. In particular, the separation of the mail-type body 100 from the female-type body 200 is made smoothly.

This will be described in more detail for each configuration as follows.

First, the male body 100 will be described with reference to FIGS. 1 to 7 attached thereto.

The mail-type body 100 is provided to be coupled to the female-type body 200 to be described later while one hose 11 is connected.

The mail-shaped body 100 includes a nozzle part and a gripping part 120.

Here, the nozzle part is connected to the hose 11 and the female-type body 200 and is formed as a pipe-type nozzle having an empty inside to transfer fluid (water).

This nozzle part is composed of a nozzle outer end 111 to which one hose 11 is connected and a nozzle inner end 112 to which the female body 200 is connected.

In particular, the nozzle part is formed to penetrate the closed side wall (rear wall) of the gripping part 120 to be described later, while the nozzle outer end 111 is positioned to be exposed to the outside of the gripping part 120, and inside the nozzle. The end 112 is made to be positioned within the gripping part 120.

At this time, the outer circumferential surface of the nozzle outer end 111 may be formed in an uneven structure to increase the coupling force with the hose 11.

In addition, the nozzle inner end 112 is formed to extend in the axial direction from the nozzle outer end 111.

In addition, the gripping portion 120 is a portion configured to be gripped while surrounding the insertion coupling portion 210 of the female-type body 200 to which the nozzle inner end 112 is coupled.

The gripping part 120 is formed in a cylindrical structure opened to the front (a direction in which the female-type body part is coupled) (left side in the drawing) while surrounding the nozzle inner end 112 from the circumference of the nozzle part.

That is, in the button-type fitting device for hose connection according to an embodiment of the present invention, although the male-type body part 100 is formed in a male structure by the additional provision of the gripping part 120, the gripping part Since the nozzle inner end 112 is not exposed to the outside by 120, damage to the seal member 410 provided between the insertion coupling part 210 connected to the nozzle inner end 112 can be minimized. I made it possible.

In particular, the exposed hole 121 is formed through the circumferential surface of the gripping part 120, and a portion of the circumference of the gripping part 120 opposite to the part where the exposed hole 121 is formed is a button part ( In addition to being formed to be open so that the 300) can be coupled, this open portion is configured to be closed with the gripping cover 130.

The gripping cover 130 includes a ring-shaped covering 131 surrounding the gripping part 120 and a closed end extending from the circumferential surface of the gripping part 120 and covering the open portion of the gripping part 120. Consists of 132. At this time, the closed end 132 is formed to have the same outer diameter as the gripping part 120, and the covering 131 is constrained by being partially recessed into the restraining jaw 122 formed around the gripping part 120 It is configured to be.

Next, the female-type body 200 will be described with reference to FIGS. 1 to 6 and 8 attached thereto.

The female-type body 200 is provided to be coupled to the male-type body 100 while the other hose 12 is connected.

The female-type body 200 is formed of a nozzle of an empty pipe-type inside which includes an insertion coupling part 210 and a hose coupling part 220.

Here, the insertion coupling part 210 is a portion for coupling with the mail-shaped body 100.

The insertion coupling part 210 is made to be inserted into the gripping part 120 of the mail-shaped body 100, and the nozzle inner end 112 of the nozzle part is inserted into the insertion coupling part 210 .

That is, in the embodiment of the present invention, the male-type body 100 and the female-type body 200 are configured to have a double overlapping structure, so that the seal member 410 is not exposed to the outside and the female-type body 200 ), it becomes possible to remain installed within.

In addition, an inner mounting groove 211 is formed on the inner circumferential surface of the insertion coupling part 210. The inner mounting groove 211 is formed to be open to the front (right side in the drawing) of the insertion coupling portion 210 and is configured to insert and couple the seal member 410 from the open front.

At this time, the inner mounting groove 211 is formed to have a larger inner diameter than the nozzle inner end 112 of the nozzle mounted on the inner circumferential surface of the insertion coupling portion 210.

The seal member 410 is formed of a ring made of rubber, and may have a circular cross section or a polygonal shape.

The seal member 410 is located at a rear portion (left in the drawing) in the inner mounting groove 211, and is configured to maintain airtightness between the insertion coupling portion 210 and the nozzle portion (inner end of the nozzle). At this time, the outer circumferential surface of the seal member 410 is installed to be in close contact with the inner mounting groove 211, and the inner circumferential surface of the seal member 410 is installed so as to be in close contact with the outer circumferential surface of the nozzle inner end 112 constituting the nozzle part.

In addition, a take-out prevention cap 420 is installed on an outer portion of the inner mounting groove 211 to prevent the seal member 410 from being taken out. The take-out prevention cap 420 is formed in a cylindrical ring shape and at least one portion is cut to be compressed or restored in a radial direction, and a coupling protrusion 421 is formed on the outer circumferential surface thereof.

At this time, a coupling hole 212 is formed through any one circumference of the insertion coupling part 210, and the coupling protrusion is formed to be coupled to the coupling hole 212.

That is, the take-out prevention cap 420 is coupled to the front portion (right portion in the drawing) in the inner mounting groove 211 and the seal member 410 positioned at the rear portion in the inner mounting groove 211 This will prevent unwanted ejection.

In addition, a concave groove 213 is formed in the circumferential surface of the insertion coupling part 210. The constraining groove 213 is a structure for installing and constraining the button unit 300 to be described later.

In addition, a guide rib 214 is formed to protrude at a rear portion (left portion in the drawing) of the constraining groove 213 of the outer peripheral surface of the insertion coupling portion 210. At this time, the guide rib 214 is positioned adjacent to the inner circumferential surface of the gripping portion 120 of the mail-shaped body 100 and separates the female-shaped body 200 and the mail-shaped body 100 from each other. The body 200 is not inclined and separated while maintaining the straightness to prevent jamming during separation.

That is, as the insertion coupling part 210 is formed so that both the front outer circumferential surface and the rear outer circumferential surface are positioned adjacent to the inner circumferential surface of the gripping part 120 of the mail-shaped body 100 with respect to the constraining groove 213 When separating or combining from the mail-shaped body 100, it is always possible to have a straightness, and thereby, it is possible to prevent malfunctions in operation when separating or combining.

In addition, the hose coupling portion 220 is a portion provided for coupling with the hose 12.

The hose coupling portion 220 is formed to extend rearward (left side in the drawing) from the portion where the guide rib 214 of the insertion coupling portion 210 is formed.

Next, the button unit 300 will be described.

The button part 300 is a configuration provided to prevent the male-type body 100 and the female-type body 200 from being undesirably separated from each other.

The button portion 300 is formed in a ring shape and is coupled to the gripping portion 120 of the mail-shaped body 100.

The button portion 300 is formed to have a width (front and rear length) sufficient to be accommodated into the constraining groove 213 of the insertion coupling portion 210 constituting the female-type body 200.

At this time, the button part 300 is formed to have an inner diameter larger than the outer diameter of the confinement groove 213 and is installed to be elastically moved in the radial direction of the constraining groove 213 while being coupled to the constraining groove 213 It is structured to be able to be.

Particularly, a part of the outer circumferential surface of the button part 300 is installed to be exposed through the exposed hole 121 formed on the circumferential surface of the gripping part 120, whereby the user By pressing, it is possible to release the constraint between the female-type body 200 and the male-type body 100.

In addition, a restoring member 310 is provided at a portion of the outer circumferential surface of the button portion 300 that faces the closed end 132 of the gripping cover 130. At this time, the restoration member 310 is compressed or restored according to whether the button part 300 exposed through the exposure hole 121 is pressed, so that the button part 300 is accommodated in the constraining groove 213, or It serves to escape from the constraining groove 213.

On the other hand, it is proposed that the button-type fitting device for hose connection according to an embodiment of the present invention further includes a pressure holder 500.

The pressure holder 500 is configured to prevent unwanted separation of the

hoses

11 and 12 by pressing while gripping the outer circumferential surfaces of the nozzles or

hoses

11 and 12 connected to the hose coupling unit 220.

In particular, accommodating

protrusions

115 and 225 are formed respectively protruding from the outer circumferential surfaces of the nozzle unit and the hose coupling unit 220 on the rear end of the

hoses

11 and 12 at which the ends of the

hoses

11 and 12 are located, and the inner circumferential surface of the pressure holder 500 Among the receiving

protrusions

115 and 225, a receiving groove 510 is formed in a concave portion. This is as shown in the accompanying Figures 9 and 10.

That is, in a state in which the

hoses

11 and 12 are coupled to the nozzle unit or the hose coupling unit 220, the pressure holder 500 is connected between the nozzle unit or the hose coupling unit 220 and the

hoses

11 and 12 When moving to the part, the receiving

protrusions

115 and 225 of the nozzle part or the hose coupling part 220 are accommodated and restrained in the receiving groove 510 of the pressure holder 500.

At this time, the portion where the receiving groove 510 of the pressure holder 500 is formed is formed to have an inner diameter such that the

hoses

11 and 12 do not reach, and the corresponding pressure holder 500 is a nozzle part or a hose coupling part ( It is configured not to scratch the surfaces of the

hoses

11 and 12 while moving towards the 2200.

In the following, a connection process between the two

hoses

11 and 12 by the button-type fitting device for hose connection according to the embodiment of the present invention described above will be described.

First, prepare two hoses (11, 12) to be connected to each other. At this time, a pressure holder 500 is provided at the ends of the two

hoses

11 and 12, respectively.

In addition, the

hoses

11 and 12 prepared as described above are respectively connected to the male body 100 and the female body 200.

That is, one hose 11 is connected to the nozzle outer end 111 forming the nozzle portion of the male body 100, and the other hose 12 is the hose coupling portion 220 of the female body 200 Connect to

At this time, in a state in which a seal member 410 is installed on the inner circumferential surface of the insertion coupling portion 210 of the female-type body 200 and a take-out prevention cap 420 that prevents separation of the seal member 410 is coupled. Is provided.

In addition, the connection portions of the

hoses

11 and 12 are restrained using the pressure holder 500.

That is, by moving the pressure holder 500 provided in each hose (11, 12) to the connection part between the nozzle outer end 111 or the connection part between the hose coupling part 220, the

hoses

11 and 12 It is to be constrained to the end 111 or the hose coupling unit 220. At this time, the pressing holder 500 prevents unwanted separation as the receiving protrusion 115 of the mail-shaped body 100 is accommodated in the receiving groove 510 on the inner circumferential surface thereof.

In particular, as the inner circumferential surface of the moving direction end of the pressure holder 500 is formed so that the

hoses

11 and 12 do not touch, the surface of the

hoses

11 and 12 is scratched and damaged when the pressure holder 500 is moved. Is prevented by nature.

Further, the connection between the two

hoses

11 and 12 is completed by connecting the male-type body 100 and the female-type body 200 to which the

hoses

11 and 12 are connected by the above-described process.

That is, by inserting the insertion coupling portion 210 of the female body 200 into the gripping portion 120 of the mail-shaped body 100, the nozzle inner end 112 of the nozzle portion in the insertion coupling portion 210 is It is inserted and coupled, and accordingly, the two

hoses

11 and 12 achieve a state in which fluid transfer is possible with each other.

In particular, since the seal member 410 is installed between the nozzle inner end 112 and the insertion coupling portion 210, water leaks into the contact portion between the nozzle inner end 112 and the insertion coupling portion 210 Is prevented.

At this time, the seal member 410 is provided in a state installed on the inner circumferential surface of the insertion coupling part 210 and is not exposed to the outside, so that it is not contaminated or damaged by the external environment.

In addition, when the mail-type body 100 and the female-type body 200 are coupled to each other, separation between them is prevented by the button unit 300.

That is, while the button part 300 is maintained in a state received in the constraining groove 213 of the insertion coupling part 210 constituting the female-type body 200 by the restoring force of the restoring member 310, the corresponding female-type This is to prevent the back and forth flow of the body 200.

If, in the case of separating the mail-type body 100 and the female-type body 200 from each other, the button part 300 is pressed to be separated from the constraining groove 213 and then the mail-type body 100 The male and female body 200 may be separated by moving them in opposite directions to each other.

In particular, when separating the male-type body 100 and the female-type body 200, the outer circumferential surface of the insertion and coupling portion 210 of the female-type body 200 is the gripping part ( 120) Since the female-type body 200 is moved in a state adjacent to the inner circumferential surface, tilting during the separation of the female-type body 200 is prevented, whereby the female-type body 200 can be easily separated.

Of course, in the initial separation of the two

bodies

100 and 200, the guide rib 214 of the female-type body 200 is moved in a state adjacent to the inner circumferential surface of the gripping portion 120, so that separation in an inclined state is prevented.

As a result, the button-type fitting device for hose connection of the present invention can easily disconnect the

hoses

11 and 12, so that replacement or maintenance of the

hoses

11 and 12 can be easily performed.

In addition, the button-type fitting device for hose connection of the present invention is made so that the male-type body 100 and the female-type body 200 are combined in a double overlapping structure, and the seal member 410 is stored in a state in which the seal member 410 is not exposed to the outside. Since it is configured to be such that unwanted damage or contamination of the seal member 410 can be prevented.

In addition, in the button-type fitting device for hose connection of the present invention, since the male-type body 100 and the female-type body 200 are combined in a double overlapping structure, they are separated from each other or when the female-type body 100 is combined. It is prevented from tilting, thereby enabling precise mating.

On the other hand, the button-type fitting device for hose connection of the present invention is not limited to being implemented only in the structure of the above-described embodiment.

That is, the structure of the button unit 300 may be modified in various forms, and the restoration member 310 may also be provided in various types according to the structure of the button unit 300.

For example, as shown in FIGS. 11 to 14, the button unit 300 may be configured to further increase the exposed portion of the button unit 300 to obtain ease of operation. In this case, the covering 131 of the grip cover 130 may be formed in a structure that prevents a part of the button part 300 from being separated to the outside.

In addition, the restoring member 310 may be composed of a coil-type spring rather than a leaf spring, and in this case, the installation position thereof may also be changed.

In addition, the button-type fitting device for hose connection of the present invention may further provide a structure in which the user can recognize when the two

bodies

100 and 200 are coupled to each other.

For example, when the two

bodies

100 and 200 are coupled, at least one of the contact portions between the two

bodies

100 and 200 may be configured in a meshing structure so that a locking sound may be generated.

As such, the button-type fitting device for hose connection of the present invention can be modified in various forms as necessary.

Claims

A mail-shaped body comprising a nozzle portion formed with an outer end of the nozzle to which a hose is connected and an inner end of the nozzle extending from the outer end of the nozzle, and a cylindrical gripping portion formed to surround the inner end of the nozzle from the periphery of the nozzle portion (male body);

Consisting of an insertion coupling portion inserted into the gripping portion of the mail-shaped body and coupled so that the nozzle inner end of the nozzle portion is inserted therein, and a hose coupling portion which is positioned to be exposed to the outside of the gripping portion and connected to another hose. Female body;

And a button unit that is coupled to the holding portion of the mail-shaped body and is installed so that a portion of the body is exposed to the outside, constraining the female-shaped body to the mail-shaped body and releasing the restraint by pressing operation. Button-type fitting device for hose connection, characterized in that.
The method of claim 1,

An inner mounting groove is formed on the inner circumferential surface of the insertion and coupling portion constituting the female-type body,

A seal member for airtightness between the insertion coupling portion and the nozzle portion is installed at an inner portion of the inner mounting groove,

A button-type fitting device for hose connection, characterized in that a take-out prevention cap for preventing the take-out of the seal member is installed at an outer portion of the inner mounting groove.
The method of claim 2,

A button-type fitting device for hose connection, characterized in that the outer circumferential surface of the seal member is installed so as to be in close contact with the inner mounting groove, and the inner circumferential surface of the seal member is installed so as to be in close contact with the outer circumferential surface of the inner end of the nozzle of the nozzle part constituting the mail-shaped body.
The method of claim 1,

A constricting groove is formed in the circumferential surface of the female-type body, and the front outer circumferential surface and the rear-side outer circumferential surface of the insertion and coupling part are located adjacent to the inner circumferential surface of the gripping part of the male-type body. Is formed,

The button portion is formed to have an inner diameter larger than the outer diameter of the constraining groove and is coupled to the constraining groove to be elastically moved in the radial direction of the constraining groove,

A button-type fitting device for hose connection, characterized in that a portion of the outer circumferential surface of the button part is formed to protrude to be exposed to the outside by passing through any one circumference of the gripping part forming the mail-like body.
The method of claim 1,

A receiving protrusion is formed protruding on the circumferential surface of the rear end side of the nozzle part forming the male-shaped body and the hose coupling part forming the female-shaped body,

The nozzle part and the hose coupling part are provided with a pressure holder for holding the outer circumferential surface of the hose when the hose is connected to the nozzle part or the hose coupling part by pressing and restraining the nozzle part or the hose coupling part,

Button-type fitting for hose connection, characterized in that the inner circumferential surface on the tip side of the pressure holder is formed to have a larger diameter than the portion gripping the hose, and a receiving groove for receiving the receiving protrusion is concave formed on the inner circumferential surface on the tip side Device.