KR102565949B1 - Coupler - Google Patents

Abstract

The present invention relates to a quick coupler and, more specifically, to a quick coupler for connecting pipes used to supply various fluids to easily and quickly connect and separate male-female coupled fasteners and prevent fluids from leaking to the outside. To achieve the objective, according to the present invention, the quick coupler comprises: a male fastener having a flow path and a male coupling part on one side thereof; a female fastener having a flow path and a female coupling part into which the male coupling part is inserted on the other side thereof; and an attaching/detaching means attaching and detaching the male coupling part to and from the female coupling part. The attaching/detaching means includes: a stopping groove formed on the outer circumferential surface of the male coupling part; a ball member coupled to appear inside and outside in a withdrawal hole formed through the inside and outside of the female coupling part, and stopped on the stopping groove in inside withdrawal; an outer cap coupled to be moved forward and backward on the outer circumferential surface of the female coupling part, and elastically supported in the forward moving direction to push the ball member to the inside to be withdrawn; and an inner cap coupled to be moved forward and backward on the inner circumferential surface of the female coupling part, elastically supported in the forward moving direction to push the ball member to the outside to be withdrawn, and pushed by the male coupling part inserted into the female coupling part to move backward.

Description

Quick Coupler {COUPLER}

The present invention relates to a quick coupler, and more particularly, to a quick coupler for connecting piping used to supply various fluids, enabling quick and easy connection and separation of male and female fasteners and preventing leakage of fluid to the outside. It is about.

In general, a coupler is connected to a pipe such as a hose provided in various facilities to supply fluid, and is used to extend a flow path by connecting separate tube bodies.

In this coupler, each fastener is fastened in a male-female coupling form using a ball pressed by a ball cap so that connection and separation of fasteners are convenient.

As a prior art related to this, there is Registered Patent No. 10-1705289.

In the registered patent, the ball member is formed to protrude through the inside and outside of the female coupling part, so the ball member may be caught due to foreign substances and the fasteners may not be completely coupled. In particular, the ball member is exposed as it is inside the female coupling part. Because of this structure, there is a risk of fluid leakage to the outside.

In addition, there is the hassle of having to keep pulling the ball cap when combining fasteners.

Accordingly, the present invention has been made to solve the above problems,

An object of the present invention is to provide a quick coupler that makes it easy to engage and separate male and female fasteners while preventing foreign substances from being caught or fluid leaking to the outside by protecting the ball member with an inner cap.

In order to achieve the above object, the quick coupler according to the present invention,

A water flow path is formed and a water joint having a water coupling part on one side;

A female fastener having a female coupling portion in which a flow path is formed and the male coupling portion is fitted to the other side; and

A detachable means for attaching and detaching the male coupling portion to the female coupling portion,

The desorption means,

A locking groove formed on the outer circumferential surface of the water coupling part;

A ball member that is coupled to the inside and outside of the drawing hole formed through the inside and outside of the female coupling part and is caught in the locking groove when the inside is drawn out;

An outer cap coupled to the outer circumferential surface of the female coupling portion in a forward and backward direction, elastically supported in the forward direction so as to be pulled out by pushing the ball member inward;

Including an inner cap that is capable of forward and backward movement on the inner circumferential surface of the female coupling portion, is elastically supported in the forward direction so that the ball member is pushed outward and drawn out, and moves backward by being pushed by the male coupling portion inserted into the female coupling portion. to be characterized

And in the quick coupler according to the present invention,

The female coupling part includes an external guide portion formed on an outer circumferential surface of the female coupling portion to which the external cap is coupled;

The outer cap is characterized in that it includes a pressing protrusion protruding from the inner circumferential surface of the front end portion to form a pressing inclined surface to push and press the ball member of the drawing hole to the inside.

Also in the quick coupler according to the present invention,

The arm coupling part includes an inner guide portion formed on an inner circumferential surface of the arm coupling portion to which the inner cap is coupled;

The inner cap is characterized in that it includes a pressurized tube portion protruding from the front end so as to be able to come into close contact with the inner end of the withdrawal hole and sealing the withdrawal hole while pushing and pressurizing the ball member of the withdrawal hole to the outside.

In addition, in the quick coupler according to the present invention,

The water fitting and the female fitting include an airtight portion formed so that the inner diameter of each passage narrows toward the front end,

A head portion coupled forward and backward in each flow path and contacting the airtight portion to seal the airway when moving forward, and a protrusion protruding from the head portion so as to pass through the airtight portion and be exposed forward, and has elasticity in the forward direction. Further comprising a supported opening and closing member,

When the male and female fasteners are coupled, the opening and closing members are pushed in opposite directions by the contact of the protruding parts, and each passage is opened.

The quick coupler according to the present invention,

By pressurizing the ball member, an outer cap and an inner cap are provided so that the ball member is drawn out to the inside or outside of the female coupling part at all times, so it is very easy to connect and separate the fasteners, especially with the inner cap. By protecting the ball member, it is possible to prevent foreign substances from being caught or fluid leaking, and the outer cap is pulled with great force to combine the fasteners while the fluid does not leak in the state in which the fasteners are separated by sealing the opening and closing members. It does not have to be pulled, which has a very convenient effect.

1 is a cross-sectional view before coupling of a quick coupler according to the present invention.
Figure 2 is a cross-sectional view after coupling of the quick coupler according to the present invention.
Figure 3 is an exploded cross-sectional view of a water fitting according to the present invention.
Figure 4 is an exploded cross-sectional view of the arm fastener according to the present invention.
Figure 5 is a cross-sectional view showing a modified example of the quick coupler according to the present invention.
Figure 6 is a cross-sectional view showing an airtight means according to the present invention.

Since the present invention can have various changes and various forms, the implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific posting form, and it should be understood to include all changes, equivalents, or substitutes included in the spirit and technical scope of the present invention.

In each drawing, the same reference numeral, in particular, the same number of tens and ones digits, or the same reference numerals having the same tens digit, ones digit, and alphabet indicate members having the same or similar functions, and unless otherwise specified, each of the drawings Members indicated by reference numerals may be understood as members conforming to these standards.

In addition, the components in each drawing are expressed in exaggeratedly large (or thick) small (or thin) or simplified expressions in size or thickness in consideration of convenience of understanding, etc., but the scope of protection of the present invention is thereby limited. It shouldn't be.

Terms used in this specification are only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as ~comprising~ or ~consisting of are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

~First~, ~Second~, etc. described in this specification will only be referred to to distinguish different components from each other, regardless of the manufacturing order, and the names in the detailed description and claims of the invention may not match.

In describing the quick coupler according to the present invention, for convenience, if a non-rigid approximate direction reference is specified with reference to FIG. In the detailed description and claims of the invention, directions are specified and described according to this criterion unless otherwise specified.

Hereinafter, a quick coupler according to the present invention will be described with reference to the accompanying drawings.

The present invention relates to a quick coupler, and as shown in FIGS. 1 to 4, it largely includes a male fastener 10, an arm fastener 20, and a detachable means.

Prior to the description, in the reference in the front and rear directions of each fastener 10 and 20, the male coupling portion 12 and the female coupling portion 22 will be described based on this as the front end.

Specifically, the present invention,

A water fitting 10 having a flow path 11 and having a water coupling part 12 on one side;

A female fitting 20 having a flow path 21 formed and having a female coupling portion 22 on the other side of which the male coupling portion 12 is fitted; and

A detachable means for attaching and detaching the male coupling portion 12 to the female coupling portion 22; including,

The desorption means,

A locking groove 16 formed on the outer circumferential surface of the male coupling part 12,

The ball member 222, which is coupled to the inside and outside of the drawing hole 221 formed through the inside and outside of the female coupling part 22 and is caught in the locking groove 16 when drawn inside,

An outer cap 28 coupled to the outer circumferential surface of the female coupling part 22 so as to be able to move forward and backward, and elastically supported in the forward direction so that the ball member 222 is pushed inward and drawn out;

The female coupling portion 22 is coupled to the inner circumference of the female coupling portion 22 so as to be able to move forward and backward, and the ball member 222 is elastically supported in the forward direction so as to be pulled out by pushing the ball member 222 outward, and the male coupling portion fitted into the female coupling portion 22. It includes an inner cap 29 that is pushed back by (12).

In addition, the water fastening 10 and the female fastening 20,

Includes airtight parts 111 and 211 formed so that the inner diameter of the flow passages 11 and 21 narrows toward the front end,

A head part 31 that is coupled forward and backward in each flow path 11 and 21, but contacts the airtight part 111 and 211 when moving forward and seals the airway 11 and 21, and the airtight part (111) further comprising an opening/closing member 30 having a protruding portion 32 protruding from the head portion 31 so as to penetrate the 211 and be exposed forward, and is elastically supported in the forward direction,

When the male fitting 10 and the female fitting 20 are coupled, the opening and closing members 30 are pushed in opposite directions by the contact of the protruding part 32, and the passages 11 and 21 are opened.

First, the male joint 10 and the female joint 20 are provided with connecting parts 13 and 23 for connecting tubular bodies at opposite ends of the male coupling portion 12 and the female coupling portion 22, respectively. In the drawing, there is shown a female screw portion that can be connected by screwing a nibble connected to a hose or pipe, etc., which is typically used for fluid supply.

The male coupling portion 12 is inserted into the female coupling portion 22 and is fixed by a detachable means provided in the arm coupling portion 20 so that the fasteners 10 and 20 are connected to each other. The locking groove 16 is concavely formed on the outer circumferential surface of the middle portion of the sphere 10 (rear end of the male coupling portion 12).

The front and rear ends of the first flow path 11 of the water fitting 10 extend through the water coupling part 12 and the first connection part 13 and are formed through,

As shown in FIG. 1, the support member 34 is fixed to the middle part by the separation prevention ring 14, or

Alternatively, a threaded portion (not shown, see the threaded portion 25 of FIG. 5) for screwing the support member 34 to the intermediate portion is provided.

In addition, a first airtight portion 111 is provided inside the front end of the first flow path 11 so that the inner diameter of the first flow path 11 narrows toward the front, so that the head portion 31 of the opening and closing member 30 comes into contact with the first airtight part 111 so that the first flow path 11 is sealed.

The opening/closing member 30 is inserted into the first flow path 11 and moves back and forth along the first flow path 11 in a sliding manner to contact the first airtight part 111 to seal the first flow path 11. Or, it is spaced apart from the first airtight part 111 to open the first flow path 11.

When the fasteners 10 and 20 are coupled, the opening and closing members 30 are pushed by mutual contact between the opening and closing members 30 to open and communicate with the flow paths 11 and 21, which will be described later.

Subsequently, the female fastener 20 is provided with the female coupling portion 22 and the second connection portion 23 to form a second flow path 21.

An outer body 20A having the female coupling portion 22, an inner body 20B inserted into and coupled to the outer body 20A and having the second connection portion 23, and the female coupling portion ( 22) and an inner cap 29 fitted to the inner circumferential surface of the female coupling part 22,

An opening/closing member 30 is coupled to the second flow path 21 of the inner body 20B.

The outer body (20A) and the inner body (20B) are coupled so that the water coupling part 22 and the second connection part 23 are exposed in opposite directions to each other, and the second flow path 21 of the inner body 20B The male coupling part 22 and the second connection part 23 communicate and extend in front and back.

In addition, as shown in FIG. 1, the support member 34 is inserted into the separation prevention ring 24 and coupled to the intermediate portion of the inner body 20B, or the screw portion 25 for screwing the support member 34 as shown in FIG. ) is provided.

And the inner side of the front end of the inner body 20B is provided with a second airtight portion 211 formed so that the inner diameter of the second flow path 21 narrows toward the front, so that the head portion 31 of the opening and closing member 30 The second flow path 21 is sealed by contacting the second airtight portion 211 .

In addition, the arm fastening hole 20 is formed on the outer circumferential surface of the female coupling part 22 and the outer guide part 26 to which the outer cap 28 is coupled, and is formed on the inner circumferential surface of the female coupling part 22 to the inner circumferential surface. Includes an inner guide portion 27 to which the cap 29 is coupled,

In the case of the inner guide portion 27 is formed as a spaced space between the outer body (20A) and the inner body (20B).

The outer body 20A is formed through a plurality of lead-out holes 221 along the circumference of the female coupling portion 22, and a ball member 222 is fitted into each lead-out hole 221 to form a female coupling portion ( 22) appear inside and outside.

The outer cap 28 is elastically supported forward by a first compression spring S1 coupled to the outer guide part 26, and a pressure inclined surface 281 is formed as it protrudes from the inner circumferential surface of the front end to form the take-out hole. It includes a pressing protrusion 282 for pressing the ball member 222 of 221 to the inside.

The inner cap 29 is elastically supported forward by a second compression spring S2 coupled to the inner guide part 27, and protrudes from the front end so as to be in close contact with the inner end of the lead-out hole 221. and a pressure pipe part 291 for sealing the extraction hole 221 while pushing and pressurizing the ball member 222 of the extraction hole 221 to the outside.

The opening/closing member 30 coupled to the inside of the arm fastener 20 moves back and forth along the second passage 21 in a sliding manner, contacts the second airtight part 211, and opens the second passage 21. It is sealed, or it is spaced apart from the second airtight part 211 to open the second flow path 21 .

Specifically, each opening/closing member 30 coupled to the inside of the water fitting 10 and the arm fitting 20 has a packing ring 32 inserted into the outer circumferential surface of each head part 31, and each airtight part 111, 211 ) to prevent leakage of fluid, and a rod-shaped support portion 33 is connected to the rear of each head portion 31.

In addition, each fastener 10, 20 has a supporting member 34 screwed to the rear side of each opening and closing member 30, and the supporting member 34 is a fitting in which the support part 33 is fitted in the center The hole 341 is formed to pass through, and the communication part 342 is formed to penetrate along the circumference of the fitting hole 341, so that the passages 11 and 21 communicate with each other in front and behind the supporting member 34. has been

In addition, each fastener 10, 20 includes a third compression spring (S3) interposed between the head portion 31 and the support member 34, so that each opening and closing member 30 is elastically supported forward Accordingly, the protrusions 32 of the opening and closing members 30 protrude through each of the airtight parts 111 and 211.

The opening/closing member 30 is advanced by the third compression spring S3 so that each head part 31 contacts the airtight parts 111 and 211 while securing watertightness through the packing ring 32 to ensure each flow path ( 11) The fluid of (21) does not leak out of each fastener (10) (20).

In the present invention, in a situation where the male fastener 10 is not coupled to the female fastener 20, the inner cap 29 moves forward by the second compression spring S2 and the pressurizing pipe part 291 moves the ball member 222 is pushed outward, and the front end of the pressing protrusion 282 is caught due to the ball member 222 pushed outward in this way, so that the outer cap 28 does not move forward and maintains a state of being pushed backward. The pipe part 291 seals the inner surface of the lead-out hole 221 to protect the ball member 222.

When the female joint 20 is inserted into the male joint 10 and combined, the male coupling portion 12 inserted into the female coupling portion 22 pushes the pressurized pipe portion 291 and the inner cap 29 ) moves backward, and when the inner cap 29 moves backward, the pressure pipe part 291 opens the lead-out hole 221.

When the withdrawal hole 221 is opened, the pressure pushing the ball member 222 to the outside is relieved, and the elastic force of the first compression spring S1 acts on the outer cap 28 to form an outer cap 28. While being pushed forward, the ball member 222 is pushed into the lead-out hole 221 by the pressing inclined surface 281 and inserted into the locking groove 16.

And when the outer cap 28 is completely advanced by the first compression spring S1, the pressing protrusion 282 supports the ball member 222 so that it is not pushed outward, so that the ball member 222 By continuously being caught in the locking groove 16, the male fastener 10 and the female fastener 20 are coupled and maintained without being separated from each other.

When the male fastener 10 and the female fastener 20 are coupled in this way, the opening and closing members 30 move in opposite directions toward the rear of the respective fasteners 10 and 20 as each protrusion 32 contacts each other. As each head part 31 is pushed away from each airtight part 111, 211, each passage 11, 21 is opened, and the first passage 11 of the water fitting 10 and the arm fitting The second flow passages 21 of (20) communicate with each other.

And, in order to separate the male fastener 10 and the female fastener 20, when the outer cap 28 is pulled (pushed) to the rear side of the female fastener 20, the pressure that pushes the ball member 222 to the inside While this is resolved, the elastic force of the second compression spring S2 acts on the inner cap 29 so that the inner cap 29 moves forward.

As the inner cap 29 advances, the pressurized pipe part 291 pushes the ball member 222 outward and removes it, and the outer cap 28 caught on the ball member 222 does not move forward and moves backward. state remains the same.

At the same time, the pressure pipe part 291 pushes the front end of the male coupling part 12 so that the male coupling part 12 is automatically separated from the female coupling part 22, and at this time, the third compression spring S3 As each opening/closing member 30 advances, the water fitting 10 and the female fitting 20 are separated from each other in a state in which the passages 11 and 21 are sealed.

Therefore, when the water fitting 10 and the arm fitting 20 are coupled to each other, there is no need to separately pull or push the outer cap 28 backward, and the water fitting 10 and the arm fitting 20 do not need to be pulled or pushed separately. When the outer cap 28 is pulled or pushed backward for separation, the male coupling portion 12 is automatically partially removed from the female coupling portion 22, and the male coupling portion 10 and the female coupling portion 20 are coupled. And it becomes very easy to separate.

On the other hand, the present invention prevents leakage of fluid by inserting O-rings on the inner circumferential surfaces of both ends of the inner cap 29 to seal the gap between the inner cap 29, the water coupling part 12, and the inner body 20B.

Furthermore, the present invention further includes an airtight means for sealing the contact gap between the water coupling part 12 and the inner body 20B.

As shown in FIG. 6, first, the outer body 20A is provided with a plurality of guide grooves 201 having a predetermined length in the circumferential direction on the inner circumferential surface,

The inner cap 29 is provided with a protruding hole 202 formed penetrating the inside and outside at a position corresponding to the guide groove 201,

The airtight means is inserted into the protrusion hole 202 and protrudes to the inside and outside, and the pressure rod 203 whose outer end is elastically supported outward so as to be inserted into the guide groove 201;

Including an expansion ring 204 formed in the circumferential direction in close contact with the inner circumferential surface of the inner cap 29 and coupled to the inner end of the pressure bar 203,

When the fasteners 10 and 20 are coupled, the outer body 20A pushes the pressure rod 203 inward and the pressure rod 203 expands the expansion ring 204 so that the expansion ring 204 The airtightness is ensured by contacting the front end of the water coupling part 12 and the inner body 20B.

The guide groove 201 and the protruding hole 202 are arranged on the same line inside and outside each other, and the protruding hole 202 is the length of the guide groove 201 according to the forward and backward movement of the inner cap 29. position is changed in the direction

An accommodation groove is formed inside the protruding hole 202, and a spring 205 is inserted into the accommodation groove so that the spring 205 elastically supports the pressure rod 203 outward.

The expansion ring 204 is a flexible material with an empty space inside, and other parts expand when pressurized.

The pressure rod 203 has an inclined end formed at an outer end, and a hemispherical inner end 203a is attached to the outer surface of the expansion ring 204.

As the fasteners 10 and 20 are separated and the outer end of the pressure rod 203 is inserted into the guide groove 201 in a state where the inner cap 29 is advanced, the pressure rod 203 is pushed outward, The expansion ring 204 maintains its original shape.

And when the fasteners 10 and 20 are coupled, as the inner cap 29 moves backward, the inclined end of the pressure rod 203 contacts the inner circumferential surface of the outer body 20A and the pressure rod 203 is pushed inward, The inner end 203a of the pressure rod 203 pushed in this way presses the expansion ring 204 and pressurizes it.

Therefore, since a plurality of pressurizing rods 203 are arranged in the circumferential direction of the expansion ring 204, the expansion ring 204 expands inward while being pressed by simultaneous pressing of the pressurizing rods 203, and the water coupling part 12 As the expansion ring 204 completely adheres to the front end of the inner body 20B, airtightness is secured.

In the above description of the present invention, the quick coupler has been mainly described with reference to the accompanying drawings, but the present invention can be variously modified, changed and replaced by those skilled in the art, and these modifications, changes and replacements fall within the protection scope of the present invention should be interpreted as

*Description of the main parts of the drawing*
10: water joint 11: euro
12: water coupling part 13: connection part
14: departure prevention ring 15: screw part
16: locking groove
20: arm fastener 21: euro
22: female coupling part 23: connection part
24: departure prevention ring 25: screw part
26: outer guide part 27: inner guide part
28: outer cap 29: inner cap
20A: outside body 20B: inside body
30: opening and closing member 31: head
32: packing ring 33: support
34: support member
111: Confidential part 211: Confidential part
221: withdrawal hole 222: ball member

Claims (4)

A water fitting 10 having a flow path 11 and having a water coupling part 12 on one side;
A flow path 21 is formed and a female coupling portion 22 into which the male coupling portion 12 is inserted is provided on the other side, but an outer body 20A having the female coupling portion 22, and the outer body ( 20A) is inserted into and coupled to the arm fastening member 20 including an inner body 20B having a connecting portion 23; and
A detachable means for attaching and detaching the male coupling portion 12 to the female coupling portion 22; including,
The desorption means,
A locking groove 16 formed on the outer circumferential surface of the male coupling part 12,
The ball member 222, which is coupled to the inside and outside of the drawing hole 221 formed through the inside and outside of the female coupling part 22 and is caught in the locking groove 16 when drawn inside,
An outer cap 28 coupled to the outer circumferential surface of the female coupling part 22 so as to be able to move forward and backward, and elastically supported in the forward direction so that the ball member 222 is pushed inward and drawn out;
The female coupling portion 22 is coupled to the inner circumference of the female coupling portion 22 so as to be able to move forward and backward, and the ball member 222 is elastically supported in the forward direction so as to be pulled out by pushing the ball member 222 outward, and the male coupling portion fitted into the female coupling portion 22. Including an inner cap 29 pushed back by (12),
Including an airtight means for airtightening the contact gap between the water coupling part 12 and the inner body 20B,
The outer body 20A is provided with a plurality of guide grooves 201 having a predetermined length in the circumferential direction on the inner circumferential surface,
The inner cap 29 is provided with a protruding hole 202 formed penetrating the inside and outside at a position corresponding to the guide groove 201,
The airtight means is inserted into the protruding hole 202 and protruding to the inside and outside, and a pressing rod 203 whose outer end is elastically supported outward so as to be inserted into the guide groove 201;
Including an expansion ring 204 formed in the circumferential direction in close contact with the inner circumferential surface of the inner cap 29 and coupled to the inner end of the pressure bar 203,
When the fasteners 10 and 20 are coupled, the outer body 20A pushes the pressure rod 203 inward and the pressure rod 203 expands the expansion ring 204 so that the expansion ring 204 A quick coupler characterized in that it ensures airtightness by contacting the front end of the water coupling part 12 and the inner body 20B.
According to claim 1,
The female coupling part 20 includes an external guide portion 26 formed on an outer circumferential surface of the female coupling portion 22 to which the external cap 28 is coupled,
The outer cap 28 is protruded from the inner circumferential surface of the front end and a pressing inclined surface 281 is formed to include a pressing protrusion 282 for pushing and pressurizing the ball member 222 of the withdrawal hole 221 to the inside. A quick coupler to do.
According to claim 1,
The arm coupling part 20 includes an inner guide portion 27 formed on an inner circumferential surface of the arm coupling portion 22 and to which the inner cap 29 is coupled,
The inner cap 29 protrudes from the front end so as to be able to come into close contact with the inner end of the extraction hole 221, and pressurizes the ball member 222 of the extraction hole 221 to the outside while pressing the extraction hole 221. A quick coupler characterized in that it comprises a pressure pipe portion 291 for sealing.
According to any one of claims 1 to 3,
The water fitting 10 and the arm fitting 20 include airtight parts 111 and 211 formed so that the inner diameter of each flow path 11 and 21 narrows toward the front end,
The head part 31 coupled forward and backward in each flow path 11 and 21 and sealing the flow path by contacting the airtight part 111 and 211 when moving forward, and the airtight part 111 and 211 It has a projection 32 protruding from the head portion 31 so as to be exposed forward through the opening and closing member 30 elastically supported in the forward direction,
Characterized in that, when the water fitting 10 and the arm fitting 20 are coupled, the opening and closing members 30 are pushed in opposite directions by the contact of the protrusion 32, and each flow path 11, 21 is opened. A quick coupler to do.

Images