JPH04107392A - Quick connector - Google Patents

Abstract

PURPOSE:To perform rapid piping by providing a cylindrical male member, a cylindrical female member having an annular bore regulating inner peripheral surface and an annular release inner peripheral surface, a stopper member, having a flange part having a central hole, an arm part, a locking protrusion part locked to an annular recessed part, and a regulating protrusion part, and an energizing member. CONSTITUTION:A quick connector comprises a cylindrical male member 1, a cylindrical female member 2, a stopper member 3, an energizing part 4, a regulating member 51, an O-ring 52, a collar 53, and an O-ring 54. The male member 1 has an annular recessed part 1a and an annular protrusion part 1b. The female member 2 comprises a body 20 and a socket part 21. The socket part 21 has an annular first regulating inner peripheral surface 21b and a second regulating inner peripheral surface 21c. The stopper member 3 has a flange part 3a, an arm part 3b, a locking protrusion 3c, and a regulating protrusion part 3d. As a result, rapid piping is carried out and reliability on piping can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a quick connector for piping for connecting hoses, pipes, etc. for transferring fluids such as gasoline, oil, water, and air.

``Prior art'' As a quick connector for connecting hoses, such as a joint for piping, the one shown in Fig. 20 is known.
4-41794). This piping joint consists of a cylindrical male member 104 having a ring-shaped protrusion 104a formed on the outer circumferential surface of one end, and a cylindrical female member having an annular overhang 103a protruding radially inward at the open end. 103 and a male member 104
A stopper member 106 consisting of a flexible slanted side that is held by the female member 103 and inserted and locked within the female member 103; and a seal member 10 interposed between the stopper member 106 within the female member 103.
5 and a bush 107. The stopper member 106 has a cylindrical base 161 formed with an annular groove 161a that fits into the ring-shaped protrusion 104a of the male member 104.
and a plurality of leg parts 162 in which grooves 162a extending from the base part 161 and fitting into the annular projecting part 103a of the female member 103 are formed.

In this piping joint, first, by inserting the male member 104 into the stopper member 106, the stopper member 106 is bent in the centrifugal direction, and the annular groove 161a and the ring-shaped protrusion 104 are
．． a, and then this stopper member 106
The annular projecting portion 10 is formed by bending the concave groove 162a in the radially inward direction.
3a, and insert the male member 104 and the stopper member 106 into the female member 103. In this way, female member 1
It becomes possible to quickly hold the male member 104 within the 03.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional piping joint, when the male member 104 is pulled in the direction of exit from the female part IJ103 or when the male member 103 and the male When an external force in the direction perpendicular to the axis acts between the male member 104 and the
is held only by the fitting between the annular groove 161a and the ring-shaped protrusion 104a and the fitting between the concave groove 162a and the annular overhang 103a, so the tensile force and external force are large (if pulled, the leg 162 will deform). However, there are cases where the male member 104 is not stably held within the female member 103, and the reliability of opening the piping is insufficient.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a quick connector that allows quick piping and is highly reliable in piping.

[Means for Solving the Problems] The quick connector of the present invention includes a cylindrical male member having a ring-shaped recess on the outer circumferential surface of one end, and a receiving opening that is formed inwardly from the receiving opening that receives the one end of the male member. a ring-shaped regulating inner circumferential surface having an inner diameter exceeding the outer diameter of the male member; and a ring-shaped open inner circumferential surface having an inner diameter larger than the regulating inner circumferential surface, which is formed at the rear adjacent to the regulating inner circumferential surface. a cylindrical female member having a cylindrical socket portion on one end side; a flange portion having a central hole facing the receiving opening of the socket portion of the female member and into which the one end side of the male member is inserted; ,
an arm portion that protrudes axially from the inner circumferential surface of the flange portion and whose tip extends to the open inner circumferential surface of the socket portion; and an arm portion that protrudes radially inward at the tip of the arm portion and engages with the ring-shaped recess of the male member a locking protrusion that protrudes radially outwardly of the locking protrusion and engages with the restricting inner peripheral surface of the socket portion to restrict the arm portion from coming off from the socket portion in the axial direction; a stopper member held so as to be movable in the axial direction relative to the socket portion, the stopper member being held movable in the axial direction with respect to the socket portion; and the receiving portion of the socket portion of the female member; The locking protrusion of the stopper member is interposed between the opening and the flange portion of the stopper member and urges the stopper member in the direction of exiting from the receiving opening of the socket portion. The present invention is characterized in that it includes a biasing member that engages the restriction protrusion with the restriction inner circumferential surface in a state in which the restriction protrusion is engaged with the ring-shaped recess.

[Operation] In order to perform piping with the quick connector of the present invention, one end of the male member may be relatively inserted into the receiving opening of the socket portion of the female member from the center hole of the flange portion of the stopper member. At this time, the stopper member resists the urging force of the urging member when the person performing the insertion presses the stopper member, and when one end of the male member presses the locking protrusion of the stopper member. It moves inward as the male member is inserted. If the male member is not inserted sufficiently in this state, the engaging 1F protrusion of the stopper member will be located between the outer circumferential surface of the male member and the open inner circumferential surface of the socket portion, and the arm portion will deform in the radial direction. In this state, the biasing member maintains the biasing force. When the male member is further inserted into the receiving opening of the socket portion, the locking protrusion of the stopper member locks with the ring-shaped recess of the male member, and the deformation of the arm portion is released. If the insertion operation is stopped in this state, the spring member 1 to the collar member will be moved by the urging force of the urging member.
Since the locking protrusion and the ring-shaped recess are still locked, the male member moves in the direction of exiting from the receiving opening of the socket portion. The regulating protrusion engages with the regulating inner circumferential surface to prevent the arm portion of the stopper member from coming off the socket portion in the axial direction, and also to prevent it from deforming in the radial direction. thus,
The male member and the female member are locked in the axial direction and the radial direction via the collar member.

[Examples] Examples 1 to 3 embodying the present invention will be described below with reference to the drawings.

(Example 1) The quick connector of this example is as shown in Fig. 1.
A cylindrical male member 1, a cylindrical female member 2 with a cylindrical socket portion 21, a stopper member 3 held in the socket portion 21, and a socket part 21 and a brim part material. 3, the regulating member 51 held within the female member 2, the O-ring 52, the collar 53, and the O-ring 52.
It consists of a ring 54.

The male member 1 includes a ring-shaped recess 1a formed on the outer circumferential surface at a predetermined distance from one end to the other end, and the ring-shaped recess 1.
It has a ring-shaped protrusion 1b formed on the outer circumferential surface a predetermined distance away from a to the other end side.

The female member 2 includes a main body 20 on which a stepped surface 20a for connecting a hose or the like is formed, and sockets 1 to 21 fixed to one end of the main body 20.

Inside the main body 20, which is one element of the female member 2, there is a regulating member 51 having an inner diameter d approximately equal to the outer diameter d of the male member 1.
An O-ring 52, a collar 53, and an O-ring 5 are installed between the regulating member 51 and the main body 20.
4 is retained.

As shown in FIGS. 6 and 7, the sockets 1 to 21, which are other elements of the female member 2, are formed parallel to the axial direction toward the back of the receiving opening that receives one end of the male member 1. A ring-shaped guide surface 21a with an inner diameter D1 exceeding the outer diameter d of
a ring-shaped first regulating inner circumferential surface 21b formed with a diameter larger than that of 1a; and a ring-shaped first regulating inner circumferential surface 21b formed in parallel with the axial direction adjacent to the first regulating inner circumferential surface 21b and having an inner diameter larger than the guide surface 21a. The ring-shaped second regulating inner circumferential surface 21C of D2 and this second
It has a ring-shaped open inner circumferential surface 21d that is adjacent to the regulating inner circumferential surface 21C and is formed parallel to the axial direction with a step toward the rear, and has an inner diameter D3 larger than that of the second regulating inner circumferential surface 21C. Further, the socket portion 21 has an inclined surface 21e whose end surface on the receiving opening side becomes smaller in diameter as it approaches the opening.

As shown in FIGS. 8 and 9, the stopper member 3 includes a flange portion 3a having a central hole 30 into which one end of the male member 1 is inserted, and a flange portion 3a extending parallel to the axial direction from the inner peripheral surface of the flange portion 3a. The protruding tip is the open inner peripheral surface 21 of the socket 1 to part 21
d, a locking protrusion 3C that protrudes radially inward at the tip of each arm 3b and locks with the ring-shaped recess 1a of the male member 1, and a diameter of each locking protrusion 3C. It has a regulating protrusion 3d that protrudes outward with an upper surface parallel to the axial direction.

This stopper member 3 is formed such that the inner diameter of the center hole 30 and each arm portion 3b is approximately equal to the outer diameter d of the male member 1, and the outer diameter of each arm portion 3b is equal to the inner diameter D1 of the guide surface 21a of the socket portion 21. The protruding length of each regulating protrusion 3d on the arm 3b side is formed approximately equal to the length in the width direction of the first regulating inner circumferential surface 21b, and the outer diameter of each regulating protrusion 3d is equal to that of the socket. The inner diameter D2 of the second regulating inner circumferential surface 21C of the socket part 21 is approximately equal to the inner diameter D2, and the difference t between the inner diameter of the locking protrusions 3C and the outer diameter of the regulating protrusions 3d is equal to the inner diameter D2 of the second regulating inner circumferential surface 21C of the socket part 21. is smaller than the difference (D3-d) between the inner diameter D3 of the inner diameter D3 and the outer diameter d of the male part vJ1 and is larger than the difference (D2-d) between the inner diameter D2 of the second regulating inner circumferential surface 21c and the outer diameter d of the male member 1. It is formed. In addition, each arm portion 3b has a length Q from the receiving opening end of the guide surface 21a of the socket portion 21 to the far end of the second regulating inner circumferential surface 21C.
It is formed to a length that exceeds y)y). As shown in FIG. 1, this stopper member 3 has a flange portion 3a facing the receiving opening of the socket portion 21 of the female member 2, and each arm portion 3b, each locking protrusion 3C and Each regulating protrusion 3d is inserted into the receiving opening of the sockets 1 to 21 and held movably in the axial direction.

As shown in FIGS. 10 and 11, the biasing member 4 includes three fan-shaped fixing parts 41 with a center angle 120' having a ring-shaped groove 41a on the outer circumferential surface, and a ring-shaped groove in each fixing part 41. 41a
and a ring spring 42 that is held astride and biases each fixing portion 41 in a radially inward direction. Each fixing part 41 has an inclined surface 41b whose one end surface is aligned with the inclined surface 21e of the socket part 21.
The other end surface is the flange portion 3 of the stopper member 3.
The axis-perpendicular surface 41C is aligned with a. As shown in FIG. 1, this biasing member 4 is arranged between the socket portion 21 of the female member 2 and the flange portion 3 of the stopper portion vJ3 in order to bias the stopper member 3 in the direction of exiting from the receiving opening of the socket portion 21.
It is interposed between 1 and a.

In order to perform piping with this quick connector, one end of the male member 1 must be relatively inserted into the receiving opening of the socket part 21 of the female member 2 from the center hole 30 of the flange part 3a of the stopper member 3. good.

At this time, as shown in FIG. By pressing 3C, the male member 1 is moved inward as the male member 1 is inserted. As a result of this movement, each of the fixed parts 41 of the biasing member 4 moves each inclined surface 41b along the inclined surface 21e of the socket part 21, so that as shown in FIG.
The ring spring 42 is expanded in diameter. Therefore, the biasing member 4 is in a state where it has a biasing force in the direction in which the stopper member 3 exits from the receiving opening of the socket portion 21. The movement of the stopper member 3 is continued until the locking protrusion 3C comes into contact with the regulating member 51 and at the same time the flange part 3a comes into contact with the receiving opening end of the socket part 21, thereby preventing the stopper member 3 from entering further. This prevents the stomper member 3 from being damaged and the biasing member 4 from falling off.

If the insertion of the male member 1 is insufficient in this state, the locking protrusion 3C of the stopper member 3 is located between the outer peripheral surface of the male member 1 and the open inner peripheral surface 21d of the socket portion 21, and the male member 1 and formed so that the difference t shown in FIGS. 7 and 9 is less than the difference (D3-d), each arm portion 3b bends in the radial outward direction. At this time, the socket part 21
As shown in FIGS. 6 and 7, there are first and second regulating inner circumferential surfaces 21b, 21 between the guide surface 21a and the open inner circumferential surface 21d.
C, each arm portion 3b (I) is gently bent, and damage to each arm portion 3b is prevented. In this state, the difference t shown in FIGS. 7 and 9 is the difference (D2-d).
Since it is formed larger, the stopper member 3 will not return to the position before insertion. Therefore, at this time,
As shown in FIG. 3, the biasing member 4 has a ring spring 42 expanded in diameter and protruding from the socket portion 21, and the person performing piping can insert the biasing member 4 by checking the biasing member 4. You can know the state of inadequacy.

When the male member 1 is further inserted into the receiving openings of the sockets 1 to 21, the locking protrusion 3C of the stopper member 3 is locked with the ring-shaped recess 1a of the male member 1, as shown in FIG. . At this time, since the ring-shaped protrusion 1b of the male member 1 comes into contact with the back surface of the flange portion 3a of the stopper member 3 at the same time, excessive insertion is not performed.

The person performing the piping stops the insertion work in this state. Then, as shown in FIG. 5, the urging force of the urging member 4 causes the stopper member 3 to move between the locking protrusion 3C and the ring-shaped recess 1a.
and the ring-shaped protrusion 1b are in contact with each other, so that the male member 1 and the male member 1 move in the direction of exiting from the receiving opening of the socket portion 21. The protruding length of each regulating protrusion 3d on the arm 3b side is formed to be approximately equal to the length in the width direction of the first regulating inner circumferential surface 21b, and the outer diameter of each regulating protrusion 3d is equal to the second regulating protrusion 3d. Since it is formed approximately equal to the inner diameter D2 of the inner peripheral surface 2IC, the locking protrusion 3C
is engaged with the ring-shaped recess 1a, the protruding surface of the regulating protrusion 3d on the arm 3b side abuts the first regulating inner circumferential surface 21b,
The upper surface of the regulating protrusion 3d is sandwiched between the second regulating inner circumferential surface 21C, and the movement of the stopper member 3 is stopped. In this way, the arm portion 3b is prevented from coming off in the axial direction from the sockets 1 to 21, and is also prevented from deforming in the radial direction. At this time, the biasing force of the biasing member 4 is released and returns to its original state as shown in FIG. You can know what you did.

In this way, with this quick connector where the piping has been completed,
Fluid is transferred through the cylindrical male member 1 and the cylindrical female member 2. At this time, even if the male member 1 is pulled in the direction in which it is released from the female member 2, or if an external force in the direction perpendicular to the axis is applied between the male member 1 and the female member 2, the locking protrusion 3C
is locked with the ring-shaped recess 1a, and the restriction protrusion 3d is restricted by the first and second restriction inner circumferential surfaces 21b and 21C, so that the male member 1 is strongly held by the female member 2. , the male member 1 may be damaged by a certain amount of tensile force or external force.
is held stably within the female part vJ'2.

Therefore, this quick connector allows quick piping and is highly reliable in piping.

(Embodiment 2) This quick connector basically has the same configuration as that of Embodiment 1, and parts that perform the same functions are denoted by the same reference numerals, and explanations thereof will be omitted.

That is, in this quick connector, as shown in FIG. 12, the male member 6 does not have a ring-shaped protrusion.

When piping is done using this quick connector, Example 1
As with the quick connector, one end of the male member 6 may be relatively inserted into the receiving opening of the socket portion 21 of the female member 2. At this time, the stopper member 3 moves inward as the male member 6 is inserted, as shown in FIG. If the insertion of the male member 6 is insufficient in this state, the biasing member 4
is in a state of protruding from the socket portion 21, so the person who installs the piping can know whether the insertion is insufficient by checking the biasing portion vj4. If the male member 6 is roughly inserted into the receiving opening of the socket part 21, the 14th
As shown in the figure, the locking protrusion 3C is locked with the ring-shaped recess 6a of the male member 6. At this point, since the male member 6 of this quick connector does not have a ring-shaped protrusion, the person inserting the connector must be careful to finish the insertion. If the person performing the piping stops the insertion work in this state, the stopper member 3 will cause the locking protrusion 3C and the ring-shaped recess 6a to engage with each other due to the urging force of the urging member 4, as shown in FIG. Since it is stopped, it moves together with the male member 6 in the direction of exiting from the receiving opening of the socket portion 21. In this way, in this quick connector where the piping has been completed, fluid is transferred via the cylindrical male member 6 and the cylindrical female member 2. This quick connector also provides the same functions and effects as those of the first embodiment.

<Embodiment 3> This quick connector also has the same basic configuration as that of Embodiment 1, and parts that perform the same functions are denoted by the same reference numerals, and explanations thereof will be omitted.

That is, this quick connector employs the socket portion 22, stopper member 7, and biasing member 8 shown in FIG. The socket section 22 has a receiving opening side end surface formed into a seat surface 22b having a protrusion 22a on the inner peripheral surface side. As the stopper member 7, a member having a protrusion 7b protruding in the axial direction from the outer peripheral surface on the flange portion 7a is adopted. As the biasing member 8, one end is held by the protrusion 22a and the seat surface 22b, and one end is held by the protrusion 7b and the flange part 7.
A ring coil spring is used, the other end of which is held by a.

When piping is done using this quick connector, Example 1
As with the quick connector, one end of the male member 1 may be relatively inserted into the receiving opening of the socket portion 22 of the female member 2. At this time, the stopper member 7 moves toward the back as the male member 1 is inserted, as shown in FIG. If the insertion of the male member 1 is insufficient in this state, the biasing member 8
Since the piping member 8 is in a reduced state, the person who installs the piping can check the biasing member 8 to know if the insertion is insufficient. When the male member 1 is roughly inserted into the receiving opening of the socket portion 22, the locking protrusion 7C is locked with the ring-shaped recess 1a of the male member 1, as shown in FIG.

At this time, since the ring-shaped protrusion 1b of the male member 1 comes into contact with the back surface of the flange portion 7a of the stopper member 7 at the same time, excessive insertion is not performed. If the person doing the piping stops the insertion work in this state, as shown in Figure 19,
Due to the biasing force of the biasing member 8, the stopper member 7 is engaged with the locking protrusion 7C and the ring-shaped recess 1a, and the back surface of the flange portion 7a is in contact with the ring-shaped protrusion 1b. , moves together with the male member 1 in the direction of exiting from the receiving opening of the socket portion 22. In this way, in this quick connector where the piping has been completed, fluid is transferred via the cylindrical male member 1 and the cylindrical female member 2. This quick connector also provides the same functions and effects as those of the first embodiment.

[Effects of the Invention] As detailed above, the quick connector of the present invention has
A male member having a ring-shaped recess, a detail member having a socket 1 to part having a regulating inner circumferential surface and an open inner circumferential surface, and a socket part having a flange part, an arm part, a locking protrusion, and a regulating protrusion. The stopper member is urged in the direction of exiting from the receiving opening of the socket part, and the locking protrusion of the stopper member is moved into the ring-shaped recess. Since the present invention includes a biasing member that engages the regulating protrusion with the regulating inner circumferential surface in a locked state, the piping can be quickly installed and the reliability of the piping can be improved.

[Brief explanation of drawings]

1 to 11 relate to the quick connector of Example 1, FIGS. 1 and 2 are partially sectional side views showing the connection process, respectively, and FIG. 3 is a front view showing the biasing member with an enlarged diameter. FIG. 4 and FIG. 5 are partially sectional side views showing the connection process, respectively;
6 and 7 are a front view and a partial side view of the socket part, FIGS. 8 and 9 are a front view and a partial side view of the stopper member, and FIGS. 10 and 11 are a front view and a partial side view of the socket part. FIG. 6 is a front view and a partial side view of the biasing member. 12 to 15 relate to the quick connector of Example 2, and FIGS. 12, 13, 14, and 15 are partially sectional side views showing the connection process, respectively. 16 to 19 relate to the quick connector of Example 3, and FIGS. 16, 17, 18, and 19 are partially sectional side views showing the connection process, respectively. FIG. 20 is a partially sectional side view showing a conventional quick connector. 1.6...Male member 1a, 6a...Ring-shaped recess 1b...Ring-shaped protrusion 2...Female member 21.22...Socket part 2
1b...First regulating inner circumferential surface 21c...Second regulating inner circumferential surface 2'ld...Open inner circumferential surface 3.7...Stopper members 3a, 7a...Flange portion 3b... Arm part 3C17C...Locking protrusion 3d
, 7d...Restriction protrusion 4.8...Biasing member

Claims (1)

[Claims] (1) A cylindrical male member having a ring-shaped recess on the outer circumferential surface of one end, and a ring-shaped male member having an inner diameter exceeding the outer diameter of the male member and formed at the back from a receiving opening that receives the one end of the male member. A cylindrical shape having a cylindrical socket portion on one end side having a regulating inner circumferential surface and a ring-shaped open inner circumferential surface formed at the rear adjacent to the regulating inner circumferential surface and having an inner diameter larger than the regulating inner circumferential surface. a flange portion having a central hole facing the receiving opening of the socket portion of the female member and into which the one end side of the male member is inserted;
an arm portion that protrudes axially from the inner circumferential surface of the flange portion and whose tip extends to the open inner circumferential surface of the socket portion; and an arm portion that protrudes radially inward at the tip of the arm portion and engages with the ring-shaped recess of the male member. a locking protrusion that protrudes radially outwardly of the locking protrusion and engages with the restricting inner peripheral surface of the socket portion to restrict the arm portion from coming off from the socket portion in the axial direction; a stopper member having a restricting protrusion that restricts deformation in the radial direction and is held movably in the axial direction relative to the socket portion; and the receiving opening of the socket portion of the female member. and the flange portion of the stopper member, urges the stopper member in a direction to exit from the receiving opening of the socket portion, and causes the locking protrusion of the stopper member to engage with the ring-shaped recess. A quick connector comprising: a biasing member that engages the regulating protrusion with the regulating inner circumferential surface in a stopped state.