JPH084965A - Instantaneous joint - Google Patents

Abstract

PURPOSE:To provide a an instantaneous joint which is tough and inexpensive since the structure thereof is simple and it can be easily processed and which can be simply attached and removed while it is highly durable. CONSTITUTION:When a plug 2 is inserted into the bore 5 of a substantially cylindrical socket 3, the plug 2 is locked thereto by a fitting mechanism composed of an eccentric ring 11 and an engaging groove 10. The outer peripheral surface of an insertion part 4 of the plug 2 is formed to be flat, and a sealing mechanism (O-rings 6, 7) is provided in the bore of the socket 3.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a one-touch joint. More specifically, the present invention relates to a one-touch joint that connects various hoses and pipes while maintaining sealing property, is easy to process, and can withstand a large number of attachments and detachments.

[0002]

2. Description of the Related Art In automobile coolers, indoor air conditioners, refrigerators, etc., when connecting hoses or pipes for fluids of a certain high pressure, the conventional method is to connect a union screw and a union collar with a union nut. It is used. However, when connecting and disconnecting, turning the union nut with a spanner, wrench, etc. is often extremely difficult in the engine room of the automobile or the housing of the air conditioner, and the connection is incomplete. There is a fear.

Therefore, a groove and a ring to be fitted therein are provided in a socket and a plug, and when the plug is inserted into the socket, the ring is pressed against the groove bottom by a biasing means such as a spring, and a one-touch joint that can be engaged with one touch is devised. (Japanese Patent Application No. 6-11587 and Japanese Patent Application No. 6-11587)
-28174).

For example, the one-touch joint 101 shown in FIG. 7 (see Japanese Patent Application No. 6-28174) comprises a plug 102 having a substantially cylindrical shape and a socket 103 into which the plug 102 is fitted. .

The plug 102 has a collar portion 107 formed in the middle portion of the outer peripheral surface thereof, and an insertion portion 108 which is inserted into the socket 103 and a coupling portion 109 which is coupled to a hose or a pipe (not shown). Are formed. An O-ring 104 is fitted on the outer periphery of the tip of the insertion portion 108, and an annular engagement groove 110 having the same center as the axial center of the plug 102 is formed on the root side.

One end of the socket 103 has a plug 10
2 is a fitting portion 111 to be inserted, and the other end side is a connecting portion 112 to which a hose or a pipe (not shown) is connected. The inner diameter portion 111a of the fitting portion 111 is substantially equal to the outer diameter of the plug insertion portion 108, and is larger than the small diameter portion 112a of the connecting portion 112. The small diameter portion 112a of the connecting portion 112 is equal to the inner diameter 102a of the plug 102, the tip 105 of the plug 102 and the step surface 113 contact each other, and the fluid smoothly flows from the plug 102 to the socket 103.

An annular eccentric ring 106 is provided in the mounting groove 114 near the tip 103a of the socket 103. The mounting groove 114 has a biasing means 1 formed of a leaf spring or the like.
15 is provided to connect the plug 102 to the socket 103.
When the plug is inserted into the plug 102, the eccentric ring 106 is fitted into the annular engagement groove 110 provided near the base of the insertion portion 108 of the plug 102. As a result, the plug 102 and the socket 10
3 is berthed.

A through hole 116 is formed in the mounting groove 114 of the socket 103 at a position opposed to the biasing means 115, and the lockout pin 1 extends from this through hole 116.
The eccentric state of the eccentric ring 106 can be released by inserting 17 and the plug 102 can be removed.

[0009]

In the conventional one-touch joint as shown in FIG. 7, the insertion portion 10 of the plug 102 is provided.
8 A groove 117 for mounting an O-ring is formed on the outer periphery to form the groove 1
An O-ring 104 is fitted into and attached to 17 to seal the joint between the plug 102 and the socket 103.

However, in such a one-touch joint 101, since the O-ring 104 is provided near the tip of the plug 102, the plug 102 and the socket 103 are provided.
When the O-ring 104 is attached and detached, a part of the O-ring 104 comes into contact with the eccentric ring 106 and the guide ring 118 which are urged, and the O-ring 104 is attached and removed a number of times to remove the O
There is a problem that the ring is damaged and the sealing performance is not maintained.

An object of the present invention is to solve the above problems and provide an improved one-touch joint.
That is, it is possible to secure the sealing property for a long time,
It is an object of the present invention to provide a one-touch joint that has a simple structure and is easy to process, is tough and low-cost, and can be easily attached and detached.

[0012]

The one-touch joint of the present invention is a one-touch joint that is fitted by a fitting mechanism when a plug is inserted into the inner diameter side of a socket having a substantially cylindrical shape, and the insertion portion of the plug is It is characterized in that the outer peripheral side surface is formed flat and a sealing mechanism is provided on the inner diameter side of the socket.

Further, the sealing mechanism includes an O-ring and the O-ring.
It is preferably composed of a substantially annular spacer ring that supports the ring.

Further, it is preferable that the fitting mechanism comprises an engagement groove provided on the plug side and an eccentric ring provided on the socket side so as to urge the engagement groove toward the engagement groove.

[0015]

In the one-touch joint of the present invention, since the sealing mechanism is fixed to the socket side, scratches are less likely to occur. Further, if the O-ring is fixed by the spacer ring, the processing is easy.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a one-touch joint of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a sectional explanatory view showing an embodiment of the one-touch joint of the present invention, FIG. 2 is a sectional perspective view of the one-touch joint of FIG. 1, and FIG. 3 is a view of another embodiment of the one-touch joint of the present invention. 1 is a sectional view taken along the line III-III of FIG. 1, FIG. 4 is a perspective explanatory view of still another embodiment of the one-touch joint of the present invention, and FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is a perspective explanatory view showing another embodiment of the one-touch joint of the present invention.

1 and 2, the one-touch joint 1 of the present invention comprises a plug 2 having a substantially cylindrical shape and a socket 3 into which the plug 2 is fitted. The side surface of the insertion portion 4 of the plug 2 is flat,
An engagement groove 10 forming the fitting mechanism B is provided on the root side. On the inner diameter side 5 of the socket 3, an O-ring 6,
7 and spacer rings 8 and 9 are provided with a seal mechanism A, and an eccentric ring 11 is provided on the opening 3a side thereof.
And a fitting mechanism B including a biasing means 12 for biasing the same.
Is provided.

In FIG. 2, the plug 2 is connected to an insertion portion 4 to be inserted into the socket 3 and a hose or pipe (not shown) with a collar portion 21 formed at an intermediate portion of the outer peripheral surface of the plug 2 interposed therebetween. A connecting portion 22 is formed. The annular engagement groove 10 provided on the base side of the insertion portion 4 has the same center as the axis of the plug 2. The insertion portion 4 has a cylindrical shape, and the side surfaces of the other portions except the engagement groove 10 are uniformly flat. Therefore, it can be manufactured very easily.

One end of the socket 3 is a fitting portion 23 into which the plug 2 is inserted, and the other end is a connecting portion 24 to which a hose or a pipe (not shown) is connected.
A seal mechanism A that seals between the plug 2 and the socket 3 is fixed to the inner diameter side 5 of the fitting portion 23. When the O-rings 6 and 7 are fixed to the socket 3 side in this way, the O-rings 6 and 7 do not move during attachment / detachment, so that they do not come into contact with other members as in a conventional joint and scratches are not generated. Can be prevented. The O-rings 6 and 7 are fixed by spacer rings 8 and 9.

The spacer ring 8 has an annular shape, the outer diameter of which is substantially equal to the diameter of the inner diameter side 5 of the socket 3, and the inner diameter of which is substantially equal to the outer diameter of the insertion portion 4 of the plug 2. The spacer ring 9 has a small diameter portion 9a having the same outer diameter as the spacer ring 8 and a large diameter portion 9b having a larger outer diameter.
And the inner diameter thereof is substantially equal to the outer diameter of the insertion portion 4 of the plug 2 like the inner diameter of the spacer 8. By using such spacer rings 8 and 9, it is not necessary to form a groove for fixing the O-rings 6 and 7 on the inner diameter side, which is a difficult processing step.

That is, inside the fitting portion 23 of the socket 3, the first step portion 25 having a diameter substantially equal to the inner diameters of the spacers 8 and 9 is formed.
A second step 26 into which the inner diameter portion 25a and the large diameter portion 9b of the spacer 9 are fitted, and the O-ring 6, the spacer 8, the O-ring 7, and the spacer 9 are inserted in this order from the opening side 3a. For example, the O-rings 6 and 7 can be easily fixed inside the socket 3. Normally, the socket 3 is formed by cutting a cylindrical one, but the first step 25, the inner diameter 5,
Since the diameter of the second step portion 26 increases in order from the back, the second step portion 26 can be easily machined by sequentially cutting from the opening side 3a with a cutting machine such as a drilling machine.

Small diameter portion 24a of the connecting portion 24 of the socket 3
Is equal to the inner diameter 2a of the plug 2, and when the plug 2 is inserted into the socket 3, the tip 27 of the plug 2 and the step surface 28 of the socket 3 come into contact with each other, and the fluid smoothly flows from the plug 2 to the socket 3.

Next, the fitting mechanism B of the one-touch joint of the present invention will be described. The one-touch joint of the present invention has a seal mechanism A.
The fitting mechanism B is not particularly limited, and a conventionally known one or the one previously proposed by the present applicant can be applied. The description will be made using the ones disclosed in each of the above-mentioned applications. That is, the embodiment shown in FIG. 1 shows the fitting mechanism relating to the applicant's application (Japanese Patent Application No. 6-28174), and the embodiment shown in FIGS. The fitting mechanism relating to No. 6-11587) is used.

The fitting mechanism B has an engaging groove 10 formed in the plug 2 and an eccentric ring 11 supported on the socket 3 side so as to be urged toward the engaging groove 10.

In FIG. 1, the opening side 3 of the second step portion 26
A mounting groove 13 is formed on the side surface a. This mounting groove 1
An urging means 12 and a through hole 14 are provided at a position corresponding to the urging means 12 on the bottom of the groove 3. The eccentric ring 11 is an annular ring, is loosely fitted in the mounting groove 13, and is urged by the urging means 12 in the eccentric direction. The through hole 14 is for inserting a knockout pin 15 that releases the eccentricity of the eccentric ring 11.

The fitting mechanism B described above can also be easily manufactured. As described above, the mounting groove 13 of the eccentric ring 11 is
It can be easily processed by cutting with a cutting machine such as a drilling machine from the opening side 3a, and then the mounting groove 17 of the guide ring 16 is bored. After forming the through hole 14 in the mounting groove 13, the urging mechanism 12 is provided, and the guide ring 16 is caulked and fixed by screwing or snap ring. Further, the engaging groove 10 formed in the plug 2 is formed on the outer peripheral surface of the cylinder, and can be easily processed from the beginning.

As described above, the one-touch joint of the present invention is
Processing is simple and costs can be kept low.

Next, the operation of the fitting mechanism B will be described with reference to FIG.

FIG. 3 shows another example of the fitting mechanism B, which is a sectional view taken along the line III-III in FIG. Biasing means 30 is different from the fitting mechanism B of FIG.
It is in the form of. The urging means 12 shown in FIG. 1 is a coil spring, but it may be a leaf spring, an elastomer such as urethane rubber, or a leaf spring shown in FIG.

The biasing means 30 by means of a leaf spring has a mounting groove 13
The small protrusions 31 and 32 are provided on the bottom of the and fixed so that both ends thereof are hooked. In the present invention, it is preferable to use the biasing means 30 using such a leaf spring because it does not occupy a mounting place, is inexpensive, is easy to mount, and has a small height when compressed.

FIG. 3 shows the fitting mechanism B in the fitted state. The eccentric ring 11 has a circular ring shape in which the inner diameter 11a and the outer diameter 11b are concentric. The inner diameter 11a is formed larger than the outer diameter of the insertion portion 4 in order to insert the insertion portion 4 of the plug 2.

In the normal state, the eccentric ring 11 is urged by the urging means 30 in the direction of eccentricity. When the plug 2 is inserted into the socket 3, the tip of the plug 2 comes into contact with the inner diameter 11a side of the eccentric ring 11 and moves the eccentric ring 11 toward the center against the urging force of the urging means 30. Can be inserted inside. When the plug 2 is fully inserted, the eccentric ring 11 fits into the groove bottom 10a of the engaging groove 10 of the plug 2 and returns to the eccentric state.

As described above, the eccentric ring 11 loosely fitted in the mounting groove 13 of the socket 2 serves as the engaging groove 10 of the plug 2.
When the groove bottom 10a is urged, the plug 2 cannot be pulled out. However, the plug 2 is rotatable in the circumferential direction (arrow direction). The fitting mechanism B has a feature that the plug 2 can be freely rotated even after mounting.

When removing the plug 2 and the socket 3, the lockout pin 15 is inserted into the through hole 14 of the socket 3. In the fitting mechanism B, the eccentric ring 1 is attached to the socket 3 side.
1 and the biasing means 12 are provided, and the through hole 14 is formed at a position relative to the biasing means 12. Therefore,
The fitting mechanism B is used for the plug 2 when the lockout pin 15 is inserted.
It also has a feature that the plug 2 can be easily pulled out without the need to align the socket 3 with the socket 3. This is because the biasing means 12 can be pressed without fail by inserting the lockout pin 15 into the through hole 14.

Next, another embodiment of the one-touch joint of the present invention will be described with reference to FIGS. 4 and 5. The one-touch joint 41 is composed of a plug 42 and a socket 43. The side surface of the insertion portion 44 of the plug 42 is flat, and a seal mechanism (not shown) including an O ring and a spacer ring is provided on the inner diameter side 45 of the socket 43 in that the one-touch joint 1 shown in FIGS. It is the same.

In the fitting mechanism C of the one-touch joint 41 according to this embodiment, the socket 43 has the engagement groove 50, and the plug 4 has the engagement groove 50.
2 is provided with an eccentric ring 51 which is biased by the biasing means 52. That is, the mounting groove 53 is formed at the base side of the insertion portion 44 of the plug 42, and the biasing means 52 such as a coil spring is fixed to the mounting groove 52, and the eccentric ring 51 is loosely fitted.

Reference numeral 55 is a stopper pin for fixing the guide ring 56 when the guide ring 56 is used as a side wall of the mounting groove 53 when forming the mounting groove 53.

In FIG. 5, since the engaging groove 50 provided inside the socket 43 is annular in this fitting mechanism C, like the fitting mechanism B, the plug 42 can be rotated at the time of fitting. It has the characteristics of

However, unlike the fitting mechanism B, the urging mechanism 5
The eccentric direction of 2 cannot be specified from the outside of the socket 43. Therefore, when removing the plug 42 and the socket 43, it is necessary to align the plug 2 and the socket 3 when the lockout pin 15 is inserted, and the through hole 54 must be aligned with the position of the marker M shown in FIG. I won't.

Next, still another embodiment of the one-touch joint of the present invention will be described with reference to FIG. The one-touch joint 61 includes a plug 62 and a socket 63. The side surface of the insertion portion 64 of the plug 62 is flat, and the socket 6
Like the one-touch joints 1 and 41, a seal mechanism (not shown) including an O-ring and a spacer ring is provided on the inner diameter side 65 of the No. 3 joint.

The fitting mechanism D of the one-touch joint 61 is characterized in that the socket 63 is provided with the engagement groove 70, and the plug 62 is provided with the eccentric ring 71 urged by the urging means 72. That is, a mounting groove is formed at the base side of the insertion portion 64 of the plug 62, and the biasing means 72 such as a coil spring is fixed to the mounting groove, and the eccentric ring 71 is loosely fitted.

In this fitting mechanism D, the engaging groove 70 is an arcuate groove eccentric to the axial center of the plug 62 and the socket 63. Therefore, in order to engage the biasing means 72 side of the eccentric ring 71 with the engagement groove 70, it is necessary to perform the alignment at the time of fitting. Concavities and convexities 73 and 74 are provided on the plug 62 and the socket 63, respectively.

Further, the plug 62 and the socket 63 are removed by inserting a lockout pin into the through hole 75 provided at the deepest portion of the engaging groove 70.

Incidentally, the plug 2 and the socket 3 of the present invention
Is preferably made of a metal such as brass or aluminum from the viewpoint of strength and durability. However,
From the viewpoint of low cost, synthetic resin can also be used.

Further, the tip 27 of the plug 2 shown in FIG.
Then, a cutter and a closing film member (not shown) are provided on the step surface 28 on the socket 3 side to prefill the inside of the hose with the fluid, and the closing film member is broken at the time of fitting and the fluid is connected. It is also possible to be able to move back and forth in the hose. Also, a valve system or the like can be attached, which facilitates resealing when the joint is removed.

[0047]

According to the present invention, since the sealing mechanism is provided on the socket side, the sealing mechanism will not be scratched even if it is repeatedly attached and detached many times. Therefore, it is durable and maintenance costs are low. Moreover, the processing of the plug is simplified.

Further, when the O-ring is fixed by the spacer ring, it is not necessary to cut the groove for holding the O-ring, which facilitates the processing.
Therefore, the initial cost is also reduced.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of a one-touch joint of the present invention.

FIG. 2 is a cross-sectional perspective view of the one-touch joint of FIG.

FIG. 3 is a view of another embodiment of the one-touch joint of the present invention and is a cross-sectional view taken along the line III-III of FIG.

FIG. 4 is a perspective explanatory view of still another embodiment of the one-touch joint of the present invention.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective explanatory view showing another embodiment of the one-touch joint of the present invention.

FIG. 7 is a cross-sectional view of essential parts showing an example of a conventional one-touch joint.

[Explanation of symbols]

 1, 41, 61 One-touch fitting 2, 42, 62 Plug 3, 43, 63 Socket 4, 44, 64 Insertion part 5, 45, 65 Inner diameter side 6, 7 O-ring 8, 9 Spacer ring 10, 50, 70 Engagement Grooves 11, 51, 71 Eccentric ring A Seal mechanism B, C, D Fitting mechanism

Claims (3)

[Claims] 1. A one-touch joint which is engaged by a fitting mechanism when a plug is inserted into an inner diameter side of a socket having a substantially cylindrical shape, wherein an outer peripheral side surface of an insertion portion of the plug is formed flat. A one-touch joint characterized in that a sealing mechanism is provided on the inner diameter side of the socket. 2. The one-touch joint according to claim 1, wherein the sealing mechanism includes an O-ring and a substantially annular spacer ring that supports the O-ring. 3. The fitting mechanism according to claim 1, wherein the fitting mechanism includes an engagement groove provided on the plug side and an eccentric ring provided on the socket side so as to urge the engagement groove toward the engagement groove. One-touch fitting.