JP6570911B2 - Piping connector - Google Patents

Description

  The present invention relates to a connector for piping.

  Patent document 1 is disclosing the conventional connector for piping. This pipe connector connects a pipe having a bulge portion in the vicinity of the tip. This piping connector includes a connector main body, an O-ring, a locking member, and an annular cap. The connector body has a cylindrical shape with an insertion port into which a pipe is inserted opened at one end. The O-ring is mounted in the connector body. When the pipe is inserted into the connector main body, the O-ring is in close contact with the outer peripheral surface of the inserted pipe and the inner peripheral surface of the connector main body to ensure water tightness. The locking member is made of synthetic resin, has an annular shape, and has a claw portion protruding inward from the inner peripheral surface. The locking member is mounted in the connector body closer to the insertion port than the O-ring. When the pipe is inserted into the connector main body, the bulge part of the pipe pushes the claw part and passes through the pipe connector. In this pipe connector, when the bulge part passes through the claw part, the claw part is locked to the bulge part to prevent the pipe from coming off. The annular cap forms a groove portion between an inner portion having an inner diameter substantially equal to the outer diameter of the pipe and an outer portion located outside the inner portion. The annular cap is held by the connector body by fitting a groove into an end portion of the connector body where the insertion port is formed. In this connector for piping, the inner side portion of the annular cap is sandwiched between the outer peripheral surface of the piping and the inner peripheral surface of the insertion port of the connector main body, so that shakiness in the radial direction of the piping can be suppressed.

JP-A-10-110881

  However, in the connector for piping of Patent Document 1, in order to suppress the backlash of the piping and to connect in a retaining state, the operation of inserting the piping into the connector main body and the groove portion of the annular cap are inserted into the connector main body. The operation | movement to make it fit in the formed edge part is required. In other words, this piping connector requires two operations in order to connect the piping connector in a retaining state while suppressing rattling of the piping.

  The present invention has been made in view of the above-described conventional situation, and it is an object to be solved to provide a piping connector capable of connecting piping in a retaining state while suppressing rattling in one operation. It is said.

The pipe connector of the present invention is a pipe connector for connecting a pipe having a bulge part near the tip in a watertight manner,
An insertion port is opened, and a connector body into which the pipe is inserted from the insertion port,
When the pipe is inserted into the connector main body from the insertion port, the retainer has a claw part that locks the bulge part and keeps the pipe from coming off.
It is attached to the inside of the insertion port of the connector main body, and while the bulge portion comes into contact and is pushed into the connector main body by one operation of inserting the pipe into the connector main body from the insertion port, A ratchet member having a plurality of ratchet portions that are folded and sandwiched directly or indirectly between the outer peripheral surface of the pipe and the inner peripheral surface of the connector body on the same circumference of the outer peripheral surface of the pipe When,
It is characterized by having.

  In this piping connector, when the piping is inserted into the connector main body from the insertion port, the claw portion of the retainer can be locked to the bulge portion to prevent the piping from coming off. In addition, when the piping connector is inserted into the connector main body from the insertion port, the stopper member with which the bulge portion comes into contact is pushed into the connector main body. At this time, the plurality of ratchet portions of the ratchet member are folded and sandwiched between the outer peripheral surface of the pipe and the inner peripheral surface of the connector body on the same circumference of the outer peripheral surface of the pipe, and the radial direction of the pipe The rattling can be suppressed. As described above, when the pipe is inserted into the connector main body from the insertion port, the pipe connector can prevent the pipe from shaking in the radial direction and can be prevented from coming off.

  Therefore, the pipe connector of the present invention can connect the pipe in a retaining state while suppressing rattling in one operation.

It is sectional drawing which shows the state before connecting the piping to the connector for piping of Example 1, and before connecting piping. It is a connector main body of Example 1, Comprising: (A) is a side view, (B) is a front view. It is a pressing member of Example 1, Comprising: (A) is a side view, (B) is a front view. FIG. 3 is a top view of the pressing member according to the first embodiment. It is a rattle stop member of Example 1, Comprising: (A) is a side view, (B) is a front view. FIG. 3 is a top view of the ratchet member according to the first embodiment. It is a retainer of Example 1, Comprising: (A) is a side view, (B) is a front view, (C) is arrow XX sectional drawing of (B). 1 is an exploded cross-sectional view of a piping connector of Example 1. FIG. It is a connector for piping of Example 1, Comprising: It is sectional drawing which shows the state before inserting piping into an insertion port. It is a connector for piping of Example 1, Comprising: It is sectional drawing which shows the state which the bulge part contact | abutted to the ring part of the rattle stop member. It is a connector for piping of Example 1, Comprising: It is sectional drawing which shows the state which the bulge part contact | abuts and pressed into the ring part of the rattle stop member. It is a connector for piping of Example 1, Comprising: It is sectional drawing which shows the state which the nail | claw part of the retainer latched to the bulge part. 6 is an exploded cross-sectional view of a piping connector of Example 2. FIG. It is a front view which shows the rattle stop member of Example 2. It is a front view which shows the retainer of Example 2. FIG. 6 is an exploded cross-sectional view of a piping connector of Example 3. FIG. It is a front view which shows the rattling member of Example 3. It is a front view which shows the retainer of Example 3. FIG.

  A preferred embodiment of the present invention will be described.

  When the ratchet portion of the present invention is exposed to the outside of the insertion port, the ratchet portion can extend outside the inner diameter of the insertion port. In this case, when a force in the insertion direction of the pipe is applied to the stopper portion that is exposed to the outside of the insertion port, the connector for the pipe moves in a direction in which the stopper portion spreads outward. For this reason, this connector for piping moves in a direction in which the ratchet stops spread outward even if force in the insertion direction of the pipe is applied unintentionally to the tab that is exposed outside the insertion port. It is only possible to prevent the rattling member from being pushed into the connector body from the insertion port.

  The ratchet portion of the present invention can be housed in the connector body when the pipe is inserted into the connector body in a retaining state. In this case, this piping connector can easily determine whether or not the piping is inserted in the retaining state by whether or not the stopper is housed in the connector body.

  The connector for piping of this invention WHEREIN: The said connector main body and the said ratchet part may be different colors. In this case, this piping connector is easy to visually check whether or not the ratchet is housed in the connector body. For this reason, this connector for piping can make it easy to determine whether or not the piping is inserted in a retaining state.

  The ratchet member according to the present invention may include a ring portion with which the bulge portion abuts, and a thin connecting portion that couples the ring portion and the ratchet stop portion. In this case, in this piping connector, when the bulge part comes into contact with the ring part and the ratchet stopper member is pushed into the connector body, the thin-walled coupling part functions as a hinge, and the plurality of ratchet stopper parts are folded. And sandwiched between the outer peripheral surface of the pipe and the inner peripheral surface of the connector body on the same circumference of the outer peripheral surface of the pipe. As described above, the ratchet member is a ratchet member having a simple structure and can suppress the shakiness in the radial direction of the pipe.

  The ratchet portion of the present invention can be divided in the circumferential direction. In this case, the pipe connector is easy to fold the ratchet stopper, so that the pipe can be easily inserted from the insertion port. In addition, since the ratchet portion of this piping connector is divided in the circumferential direction, the ratchet stopper member is different unless a force in the reduced diameter direction is intentionally applied to all the ratchet portions at once. It is hard to be pushed into the connector body from the slot. For this reason, this piping connector prevents the rattling stopper member from being pushed into the connector main body from the insertion port even if a force in the diameter reducing direction is applied unintentionally to a part of the rattling stopper portion. Can do.

  Next, Examples 1 to 3 embodying the piping connector of the present invention will be described with reference to the drawings.

<Example 1>
As shown in FIG. 1, the piping connector of the first embodiment connects the piping 1 having the bulge portion 4 near the tip in a watertight manner. The pipe 1 is made of resin, and has a pipe main body 2 and a substantially cylindrical tip member 3 that is externally fitted and bonded to the tip end of the pipe main body 2. The front end member 3 forms a bowl-shaped bulge portion 4 extending in the radial direction from the outer peripheral edge of the rear end edge. In this way, the pipe 1 has the bulge portion 4 in the vicinity of the tip.

The piping connector is made of resin, and includes a connector main body 10, an O-ring 30, a pressing member 50, a ratchet member 70, and a retainer 90 as shown in FIGS. 1 to 8.
As shown in FIG. 1, the connector body 10 is a left-right symmetric cylindrical body in which circular insertion ports 10 </ b> A are opened at both ends and the insertion ports 10 </ b> A communicate with each other. Here, the left and right refer to the left and right in FIG.

  The connector main body 10 connects a pair of first tube portions 11 located on both left and right sides, a pair of second tube portions 12 formed continuously inside the first tube portion 11, and a pair of second tube portions 12. It has a central tube portion 13 to be used. The first cylinder portion 11 has a constant outer diameter and inner diameter. The 1st cylinder part 11 is formed in the inclined surface which the inner peripheral surface which forms 10 A of insertion ports inclines toward the back side.

  As shown in FIGS. 2 (A) and 2 (B), the first tube portion 11 is formed with a pair of first through holes 11A penetrating outwardly from two opposing inner peripheral surfaces. Each first through hole 11 </ b> A has a substantially rectangular shape that is long in the circumferential direction, and is symmetric with respect to the central axis of the first tube portion 11. Moreover, the 1st cylinder part 11 has a pair of groove part 11B extended in parallel with the central axis of the 1st cylinder part 11 toward the back direction from 10 A of insertion ports in two places of the internal peripheral surface which opposes. These groove portions 11B are formed on the inner peripheral surface shifted by 90 ° with respect to the center in the circumferential direction of each first through hole 11A. These groove portions 11 </ b> B have a quadrangular cross-sectional shape and are symmetrical with respect to the central axis of the first tube portion 11.

  The outer diameter of the second cylindrical portion 12 is smaller than the outer diameter of the first cylindrical portion 11. Further, the second cylindrical portion 12 forms a first inner diameter portion 12A having the same inner diameter dimension from the inner diameter of the first cylindrical portion 11 and a second inner diameter portion 12B having an inner diameter smaller than the first inner diameter portion 12A. Yes. That is, the second cylindrical portion 12 forms a stepped portion on the inner peripheral surface. The second cylindrical portion 12 is formed with a pair of second through holes 12D penetrating outwardly from two opposing inner peripheral surfaces. These second through holes 12 </ b> D are smaller than the first through holes 11 </ b> A, have a rectangular shape that is long in the circumferential direction, and are symmetrical with respect to the central axis of the second cylindrical portion 12. The second through-hole 12D is formed along the side surface on the left and right center side of the second flange 16 described later.

  As shown in FIG. 1, the central cylindrical portion 13 has an outer diameter smaller than the outer diameter of the second cylindrical portion 12, and the outer peripheral surface of the boundary portion between the second cylindrical portion 12 and the central cylindrical portion 13 is the second cylindrical portion. Inclined in the direction of the central axis from 12 toward the central tube portion 13. Moreover, the inner diameter of the center cylinder part 13 is smaller than the inner diameter of the second cylinder part 12, and the inner peripheral surface of the boundary part between the second cylinder part 12 and the center cylinder part 13 is perpendicular to the center axis from the second cylinder part 12. A rising surface 13A rising in the central axis direction is formed.

  As shown in FIGS. 1 and 2A, the connector main body 10 has an annular first flange portion 15, first tube portion 11, and second tube portion 12 that extend in the radial direction from the outer peripheral edges of both left and right ends. An annular second collar portion 16 extending in the radial direction from the outer peripheral surface of the boundary portion is provided.

  As shown in FIG. 1, the O-ring 30 has an outer diameter that is substantially equal to the inner diameter of the second inner diameter portion 12 </ b> B of the second cylindrical portion 12 of the connector body 10. The O-ring 30 has an inner diameter that is slightly smaller than the inner diameter of the central tube portion 13 of the connector body 10 and slightly smaller than the outer diameter of the distal end portion of the pipe 1.

  As shown in FIGS. 1, 3, and 4, the pressing member 50 has an annular shape. As shown in FIG. 3 (A), the holding member 50 has a first annular portion 51 and a first outer ring portion 51 having a smaller outer diameter than the first annular portion 51 continuously on one side surface. And a two-ring portion 52. That is, the pressing member 50 has a stepped portion 50A on the outer peripheral surface. The outer diameter of the first annular portion 51 is slightly smaller than the inner diameter of the first inner diameter portion 12 </ b> A of the second cylindrical portion 12 of the connector main body 10. The outer diameter of the second annular portion 52 is slightly smaller than the inner diameter of the second inner diameter portion 12B of the second cylindrical portion 12 of the connector body 10. The holding member 50 has a reduced diameter portion 51A whose inner peripheral surface is gradually reduced in diameter from the opening on the first annular portion 51 side to the second annular portion 52 side, and a second annular ring having the same inner diameter from the reduced diameter portion 51A. It is formed from the same inner diameter part 52A extending to the opening on the part 52 side.

  The pressing member 50 is an outer peripheral surface of the first annular portion 51, and a pair of columnar convex portions 53 are formed at two positions symmetrical to the central axis. These convex portions 53 are sized to fit the pair of groove portions 11 </ b> B formed in the first tube portion 11 of the connector main body 10 and allow the pressing member 50 to slide. That is, the convex portions 53 are provided so that the presser member 50 does not rotate in the circumferential direction when the presser member 50 is mounted in the connector main body 10.

  As shown in FIGS. 3 and 4, the pressing member 50 is an outer peripheral surface of the first annular portion 51, and has a pair of locking portions 54 at two positions symmetrical with respect to the central axis. Yes. These locking portions 54 are formed on the outer peripheral surface shifted by 90 ° with respect to the respective convex portions 53 formed on the outer peripheral surface of the first annular portion 51. These locking portions 54 are thin plate pieces in which three sides of a rectangular shape that is long in the circumferential direction of the first annular portion 51 are separated from the outer peripheral surface. As for these latching | locking parts 54, the long side part by the side of the 2nd ring part 52 is connected with the outer peripheral surface of the 1st ring part 51, and it goes outward toward the opening side by the side of the 1st ring part 51. Inclined. These locking portions 54 are symmetrical with respect to the central axis. That is, as will be described later, these locking portions 54 are provided so as to be engaged with the second through holes 12D and to be prevented from coming off when the pressing member 50 is attached to the connector main body 10.

  As shown in FIGS. 5A, 5 </ b> B, and 6, the rattling stopper 70 includes a ring portion 71, a rattling stopper 73, and a connecting portion 75. The ring part 71 is annular. The ring portion 71 is an abutment surface 71A with which the bulge portion 4 of the pipe 1 abuts, as will be described later, and the end surface to which the ratchet stop 73 is connected is formed in a plane perpendicular to the central axis. . The ring portion 71 is formed with a pair of third through holes 77 penetrating outwardly from two opposing inner peripheral surfaces. These third through holes 77 have a rectangular shape that is long in the circumferential direction, and are symmetrical with respect to the central axis of the ring portion 71. As shown in FIG. 6, these third through holes 77 are formed by curved surfaces 77 </ b> A whose long sides on the contact surface 71 </ b> A side swell outward. On the other hand, the third through hole 77 is formed by a plane 77B in which the other long side portion is perpendicular to the axial direction. The ring portion 71 is formed of a curved surface 71B in which the outer peripheral corner of the side surface opposite to the contact surface 71A of the portion where the third through-hole 77 is formed bulges outward. The opening shapes of the third through holes 77 are substantially the same as the first through holes 11 </ b> A formed in the first tube portion 11 of the connector body 10.

  The ring portion 71 is an outer peripheral surface, and a pair of cylindrical convex portions 79 are formed at two positions symmetrical with respect to the central axis. These convex portions 79 are formed on the outer peripheral surface shifted by 90 ° with respect to the center in the circumferential direction of the third through hole 77 formed in the ring portion 71. These convex portions 79 are sized to fit the pair of groove portions 11 </ b> B formed in the first tube portion 11 of the connector main body 10 so that the ring portion 71 can be slid. That is, these convex portions 79 are provided so that the rattling stopper 70 does not rotate in the circumferential direction when the rattling stopper 70 is pushed into the connector body 10.

  As shown in FIGS. 5A, 5 </ b> B, and 6, the rattling stopper 73 is a contact surface 71 </ b> A of the ring portion 71, and a third through hole 77 is formed in the circumferential direction of the ring portion 71. The two outer regions (upper and lower regions in FIGS. 5A and 5B) are connected to the outer peripheral edge via a connecting portion 75 described later. The stopper 73 connected to each region is divided into seven in the circumferential direction. The ratchet stop 73 is formed in a plate shape, and includes an inner side surface portion 73A that is continuous with the inner side surface of the connecting portion 75 that is a thin plate, a contact surface portion 73B that is continuous with the inner side surface portion 73A, and a contact surface portion 73B. It has a tip surface portion 73C continuous to the tip and an outer surface portion 73D continuous to the outside of the tip surface portion 73C. The outer side surface portion 73 </ b> D is continuous with the outer surface of the connecting portion 75. In each ratchet portion 73, the contact surface portion 73B and the outer surface portion 73D are parallel, the corner portion between the contact surface portion 73B and the tip surface portion 73C is a right angle, and the tip surface portion 73C and the outer surface portion 73D are separated from each other. The corner portion between them is a right angle, and the corner portion between the contact surface portion 73B and the inner side surface portion 73A is an obtuse angle. Thus, each rattle stop 73 has a trapezoidal cross-sectional shape in the axial direction. Further, the ratchet member 70 is formed of a resin having a color different from that of the connector body 10.

  The connecting portion 75 has a thin plate shape and is flexible, and is an angle at which the outer peripheral edge of the ring portion 71 on the contact surface 71A side and the inner side surface portion 73A and the outer side surface portion 73D of each ratchet portion 73 intersect. Are connected to each other. The connecting portion 75 connects the ring portion 71 and the ratchet portion 73 such that each ratchet portion 73 spreads outside the outer diameter of the ring portion 71.

  As shown in FIGS. 7A, 7 </ b> B, and 7 </ b> C, the retainer 90 has a pair of claws protruding inward from the opposing positions of the retainer body 91 and the inner peripheral surface of the retainer body 91. Part 93. The retainer body 91 is formed by notching a part of the cylindrical member in the circumferential direction in the central axis direction to form a squeezing port 91A, and forming guide pieces 92 bent outward from both ends forming the squeezing port 91A. It is. The retainer body 91 has an inner diameter slightly larger than the outer diameter of the first tube portion 11 of the connector body 10 and a width smaller than the distance between the first flange portion 15 and the second flange portion 16 of the connector body 10 (see FIG. 7 (A) (refer to FIGS. 1 and 9). In the retainer body 91, the gap between the squeezing ports 91A (guide pieces 92) is smaller than the inner diameter.

  The claw portion 93 includes a rising piece portion 93A that protrudes inward from an inner peripheral surface in the vicinity of one end portion (the right end portion in FIG. 7A) of the retainer main body portion 91, and a rising piece portion 93A. The rising piece portion 93A formed from the side surface (the side surface on the one end portion side of the retainer main body portion 91) projecting from the protruding piece portion 93B is long in the circumferential direction of the retainer main body portion 91, and has a circumferential dimension. Further, the distal end surface 93C is formed of a curved surface having a recessed central portion as compared with both ends. Further, as shown in FIG. 7C, the rising piece portion 93 </ b> A has an inclined surface 93 </ b> D whose tip end portion is inclined toward one end portion side of the retainer main body portion 91. The convex piece 93B has an inclined surface 93E that is flush with the inclined surface 93D formed at the tip of the rising piece 93A, and a folded back that is continuous from the tip of the inclined surface 93E to the side of the rising piece 93A. Surface 93F. The convex piece portion 93 </ b> B has a triangular prism shape that is long in the circumferential direction of the retainer main body portion 91.

Next, a procedure for mounting the O-ring 30, the holding member 50, the back stopper member 70, and the retainer 90 to the connector main body 10 will be described (see FIG. 8).
First, the O-ring 30 is inserted into the second inner diameter portion 12 </ b> B of the second cylindrical portion 12 of the connector body 10.
Next, while fitting the pair of convex portions 53 formed on the outer peripheral surface of the first annular portion 51 of the pressing member 50 into the pair of groove portions 11 </ b> B formed on the inner peripheral surface of the first cylindrical portion 11 of the connector main body 10. The step portion 50A formed on the outer peripheral surface of the first annular portion 51 and the second annular portion 52 of the holding member 50 is the first inner diameter portion 12A and the second inner diameter portion of the second cylindrical portion 12 of the connector body 10. The pressing member 50 is slid until it comes into contact with the stepped portion with the portion 12B. Then, the locking portion 54 of the pressing member 50 is locked in the second through hole 12 </ b> D of the second tube portion 12 of the connector main body 10. At this time, since the pressing member 50 is slid while the convex portion 53 of the pressing member 50 is fitted in the groove portion 11B of the connector body 10, the pressing member 50 does not rotate, and the engaging portion 54 is accurately engaged with the second through hole 12D. Can be stopped. Accordingly, the holding member 50 is fixed at a predetermined position in the connector main body 10, and the O-ring 30 can be prevented from coming out from the second inner diameter portion 12 </ b> B of the second cylindrical portion 12 of the connector main body 10.

Next, while the retainer body 91 is elastically deformed so as to widen the squeezing opening 91A of the retainer 90, the respective claws 93 of the retainer 90 are inserted into the first through holes 11A of the connector body 10 to insert the retainer 90 into the connector body. It is attached to the outer peripheral surface of the ten first cylinder parts 11.
Next, while fitting the pair of convex portions 79 formed on the outer peripheral surface of the ring portion 71 of the ratchet member 70 into the pair of groove portions 11B formed on the inner peripheral surface of the first cylindrical portion 11 of the connector body 10, The ring part 71 is slid into the first cylinder part 11. Then, the retainer main body 91 is elastically deformed and the claw portion 93 reciprocates in the radial direction, the first through hole 11A of the connector main body 10 and the third through hole 77 of the ring portion 71 are overlapped, and the claw portion 93 is It is inserted into the third through hole 77 of the ring portion 71. At this time, since the ring portion 71 is slid while the convex portion 79 of the ring portion 71 is fitted in the groove portion 11B of the connector main body 10, the rattling stop member 70 does not rotate, and the first through hole 11A of the connector main body 10 and the ring portion 71 claw portions 93 can be inserted into the third through-holes 77 by accurately overlapping the third through-holes 77. In addition, since the outer peripheral corner portion of the side surface of the ring portion 71 opposite to the contact surface 71A where the third through hole 77 is formed is formed by the curved surface 71B, the retainer main body portion 91 is elastically deformed. Thus, the claw portion 93 can easily move along the curved surface 71B, and the claw portion 93 can get over the side portion of the ring portion 71 opposite to the contact surface 71A. In this way, the ratchet member 70 is mounted in a state in which the ring portion 71 is attached to the inner side of the insertion port 10A of the connector body 10 and the ratchet stopper 73 is exposed to the outer side of the insertion port 10A. . In addition, although the example which mounted | wore the retainer member 90 after attaching the retainer 90 was shown, attaching the retainer 90 after attaching the retainer member 70 first does not have any problem.

  In the pipe connector in which the rattling member 70 is mounted on the connector main body 10, the stopper 73 exposed to the outside of the insertion port 10 </ b> A extends outside the inner diameter of the insertion port 10 </ b> A of the connector main body 10. . For this reason, when a force in the insertion direction of the pipe 1 is applied to the ratchet stopper 73, the pipe connector moves in a direction in which the ratchet stopper 73 spreads outward. For this reason, even if the force of the insertion direction of the piping 1 is added to the stopper 73 which is exposed to the outer side of the insertion port 10 </ b> A without intention, the connector for the pipe is exposed to the outside. It only moves in the expanding direction, and the rattling member 70 can be prevented from being pushed into the connector main body 10 from the insertion port 10A.

Next, connection of the pipe 1 to the pipe connector will be described.
As shown in FIG. 10, when the pipe 1 having the bulge portion 4 in the vicinity of the tip is inserted into the connector main body 10 from the insertion port 10 </ b> A of the connector main body 10, first, the bulge portion 4 is It contacts the contact surface 71A. Then, when the pipe 1 is further inserted into the connector main body 10, as shown in FIG. 11, while the retainer main body portion 91 is elastically deformed, the long side portion of the third through hole 77 of the ring portion 71 on the side of the contact surface 71 </ b> A side. The claw portion 93 moves along the curved surface 77A. The long side portion of the ring portion 71 on the abutment surface 71A side of the third through hole 77 is formed by a curved surface 77A, and the claw portion 93 easily moves along the curved surface 77A. Can be inserted smoothly. Further, when the pipe 1 is inserted into the connector main body 10, the claw part 93 of the retainer 90 is locked to the bulge part 4 as shown in FIG. In this state, the pipe connector allows the pipe 1 to be connected in a watertight manner because the O-ring 30 is in close contact with the distal end portion of the pipe 1 and the inner peripheral surface of the second cylindrical portion 12 of the connector body 10. .

  As shown in FIGS. 1 and 12, when the rattling member 70 is pushed into the connector body 10, the connecting portion 75 functions as a hinge, and the rattling portion 73 is folded. At this time, since the inner periphery of the insertion port 10A is formed with an inclined surface inclined toward the back side, the outer surface portion 73D of the ratchet portion 73 slides along this inclined surface, and the rattling is stopped. The part 73 is easily folded. Then, when the pipe 1 is inserted into the pipe connector until the pipe 1 is in the retaining state, as shown in FIG. 1, the ratchet portion 73 of the rattling stopper 70 is placed on the same circumference of the outer peripheral surface of the pipe 1. Between the outer peripheral surface of the connector and the inner peripheral surface of the connector main body 10. More specifically, the ratchet stop 73 is completely housed inside the insertion port 10 </ b> A, the abutment surface 73 </ b> B of the ratchet stop 73 abuts the outer peripheral surface of the pipe 1, and The outer side surface portion 73D is in contact with the inner peripheral surface of the connector main body 10. As described above, the pipe connector can prevent the pipe 1 from loosening in the radial direction when the pipe 1 is inserted into the connector body 10 from the insertion port 10A.

  Therefore, the pipe connector of the first embodiment can connect the pipe 1 in a retaining state while suppressing rattling in one operation.

  In addition, when the pipe 1 is inserted into the connector main body 10 so as not to be detached, the pipe connector is completely housed inside the insertion port 10 </ b> A of the connector main body 10. It can be easily determined whether or not 1 is inserted in the retaining state. Further, since the connector main body 10 and the ratchet stopper 73 are different in color, it is easy to visually recognize whether the ratchet stopper 73 is accommodated in the connector main body 10. For this reason, this connector for piping can make it easier to determine whether or not the piping 1 is inserted into a retaining state.

  The rattling member 70 includes a ring portion 71, a rattling stopper 73, and a thin connecting portion 75 that couples the rattling stopper 73. For this reason, in this piping connector, when the bulge portion 4 abuts on the ring portion 71 and the ratchet stop member 70 is pushed into the connector body 10, the thin connecting portion 75 functions as a hinge, and a plurality of The stopper 73 is folded and sandwiched between the outer peripheral surface of the pipe 1 and the inner peripheral surface of the connector body 10 on the same circumference of the outer peripheral surface of the pipe 1. Thus, this piping connector can suppress the shakiness of the piping 1 in the radial direction by the ratchet member 70 having a simple structure.

  Further, in this piping connector, the ratchet portion 73 is connected to the outer peripheral edge of the two regions in the circumferential direction of the ring portion 71 via a connecting portion 75, and is divided into seven in the circumferential direction in each region. Thus, since the ratchet stopper 73 has a flat plate shape, the ratchet stopper 73 can be easily folded and the pipe 1 can be easily inserted from the insertion port 10A. Moreover, since this ratchet stopper 73 is divided | segmented into the circumferential direction, unless the force of a diameter reduction direction is intentionally applied to all the ratchet stoppers 73 at once at this pipe connector, 70 is hard to be pushed into the connector body 10 from the insertion port 10A. For this reason, in this connector for piping, even if a force in the diameter reducing direction is unintentionally applied to a part of the ratchet stopper 73, the rattle stopper 70 is pushed into the connector body 10 from the insertion port 10A. Can be prevented.

<Example 2>
As shown in FIGS. 13 to 15, the piping connector of the second embodiment has a larger diameter than the piping connector of the first embodiment, and the form of the holding member 150, the ratchet member 170, and the retainer 190 is implemented. Different from Example 1. The same configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 13, the connector main body 110 of this pipe connector has a pair of first cylindrical portions 111 located on both the left and right sides, and a pair of second cylindrical portions formed continuously inside the first cylindrical portion 111. 112 and a central cylinder 113 that connects the pair of second cylinders 112. The first cylindrical portion 111 has a constant outer diameter and inner diameter, is provided at equal intervals on the same circumference, and is formed with three first through holes 111A penetrating in the inner and outer directions. Each first through hole 111A has a rectangular shape that is long in the circumferential direction. Moreover, the 1st cylinder part 111 is provided at equal intervals on the same periphery as 111 A of 1st through-holes, and the locking hole 111B penetrated inward and outward is formed. The second cylinder part 112 has an outer diameter smaller than that of the first cylinder part 111. In addition, the inner peripheral surface of the boundary portion between the second cylindrical portion 112 and the first cylindrical portion 111 is an inclined surface, and the inner diameter is smaller than the inner diameter of the first cylindrical portion 111. The outer diameter of the central cylinder portion 113 is smaller than the outer diameter of the second cylinder portion 112. Further, the inner diameter of the central cylindrical portion 113 is smaller than the inner diameter of the second cylindrical portion 112, and the inner peripheral surface of the boundary portion between the second cylindrical portion 112 and the central cylindrical portion 113 is perpendicular to the central axis from the second cylindrical portion 112. A rising surface 113A rising in the central axis direction is formed. The connector main body 110 has an annular first flange 115 extending in the radial direction from the outer peripheral edges of both left and right ends, and an annular first flange extending in the radial direction from the outer peripheral surface of the first cylindrical portion 111 on the second cylindrical portion 112 side. It has two flanges 116.

  The O-ring 130 has an outer diameter that is substantially equal to the inner diameter of the second cylindrical portion 112. The O-ring 130 has an inner diameter that is slightly smaller than the inner diameter of the central tube portion 113 of the connector main body 110 and slightly smaller than the outer diameter of the distal end portion of the pipe 1.

  The pressing member 150 has a cylindrical shape, and includes a first cylindrical portion 151 and a second cylindrical portion 153 that is continuous with one side surface of the first cylindrical portion 151 and has an outer diameter smaller than that of the first cylindrical portion 151. ing. The outer diameter of the first cylindrical portion 151 is slightly smaller than the inner diameter of the first cylindrical portion 111 of the connector main body 110. The inner peripheral surface on the opening end side of the first cylindrical portion 151 is formed by an inclined surface inclined toward the back side. When the holding member 150 is attached to the connector main body 110, the opening end of the first cylindrical portion 151 of the holding member 150 becomes the insertion port 150A for the connector for piping.

  The second cylindrical portion 153 has an outer diameter slightly smaller than the inner diameter of the second cylindrical portion 112 of the connector main body 110. The inner diameter of the second cylindrical portion 153 is smaller than the inner diameter of the first cylindrical portion 151. The inner peripheral surface of the first cylindrical portion 151 is formed with a step portion on the second cylindrical portion 153 side, and the diameter gradually decreases from the inner peripheral edge of the step portion toward the inner peripheral surface of the second cylindrical portion 153. ing.

  The pressing member 150 is provided at equal intervals on the same circumference of the first cylindrical portion 151, and three second through holes 152 penetrating inward and outward are formed. The second through hole 152 has the same shape as the first through hole 111 </ b> A formed in the first tube portion 111 of the connector main body 110. The pressing member 150 has a groove portion 155 on the inner peripheral surface of the first cylindrical portion 151 in parallel with the central axis. The groove 155 has a quadrangular cross-sectional shape. The pressing member 150 has three locking portions 154 provided at equal intervals on the same circumference of the outer peripheral surface of the first cylindrical portion 151. The shape of the locking portion 154 is the same shape as the locking portion 54 of the first embodiment.

  As shown in FIGS. 13 and 14, the rattling member 170 includes a ring portion 171, a rattling portion 73, and a connecting portion 75. The ring portion 171 has an annular shape. The ring portion 171 has an abutment surface 171A with which the bulge portion 4 of the pipe 1 abuts the end surface to which the ratchet portion 73 is connected, and is formed by a plane perpendicular to the central axis. The ring portions 171 are provided at equal intervals on the same circumference, and three third through holes 177 penetrating inward and outward are formed. Each third through-hole 177 has a rectangular shape that is long in the circumferential direction. Each third through-hole 177 is formed by a curved surface 177A in which the long side portion on the contact surface 171A side swells outward. Each third through hole 177 has substantially the same shape as the first through hole 111 </ b> A and the second through hole 152.

  The ring portion 171 has a cylindrical convex portion 179 formed on the outer peripheral surface. The convex portion 179 is sized so that the ring portion 171 can be slid by being fitted in a groove portion 155 formed on the inner peripheral surface of the first cylindrical portion 151 of the pressing member 150. That is, the convex portion 179 is provided so that the ratchet stopper member 170 does not rotate when the ratchet stopper member 170 is pushed into the presser member 150 attached to the connector main body 110.

  As shown in FIG. 14, the rattling stopper 73 is an abutting surface 171 </ b> A of the ring portion 171, and in the circumferential direction of the ring portion 171, on the outer peripheral edge of three regions where the third through hole 177 is not formed. They are connected via a connecting part 75. The stopper 73 connected to each region is divided into five in the circumferential direction. Each ratchet stopper 73 has the same shape as the ratchet stopper 73 of the first embodiment, and the ratchet stopper 170 is formed of a resin having a color different from that of the connector main body 10.

  As shown in FIG. 15, the retainer 190 includes a retainer main body 191 and three claw portions 93 projecting inward from the inner peripheral surface of the retainer main body 191 at equal intervals in the circumferential direction. . The retainer body 191 is formed by notching a part of the cylindrical member in the circumferential direction in the central axis direction to form a squeezing port 191A, and forming guide pieces 192 bent outward from both ends forming the squeezing port 191A. It is. The retainer body 191 has an inner diameter slightly larger than the outer diameter of the first tube portion 111 of the connector body 110 and a width smaller than the distance between the first flange portion 115 and the second flange portion 116 of the connector body 110 (see FIG. 13). In the retainer body 191, the interval between the squeezing ports 191 </ b> A (guide pieces 192) is smaller than the inner diameter. The claw portion 93 has the same shape as the claw portion 93 of the first embodiment.

Next, a procedure for mounting the O-ring 130, the holding member 150, the back stopper member 170, and the retainer 190 to the connector main body 110 will be described.
First, the O-ring 130 is inserted into the second inner diameter portion 112 </ b> B of the second cylinder portion 112 of the connector main body 110.
Next, the stepped surface between the first cylindrical portion 151 and the second cylindrical portion 153 of the pressing member 150 contacts the stepped portion on the inner peripheral surface of the first cylindrical portion 111 of the connector main body 110 on the second cylindrical portion 112 side. The pressing member 150 is slid until the locking member 154 of the pressing member 150 is locked in the locking hole 111B of the first tube portion 111 of the connector main body 110. Accordingly, the holding member 150 is fixed at a predetermined position in the connector main body 110, and the O-ring 130 can be prevented from coming out of the second tube portion 112 of the connector main body 110.

Next, while the retainer body 191 is elastically deformed so as to widen the squeezing port 191A of the retainer 190, each claw portion 93 of the retainer 190 is inserted into each first through hole 111A of the connector body 110 and each second penetration of the holding member 150. The retainer 190 is inserted into the hole 152 and attached to the outer peripheral surface of the first tube portion 111 of the connector main body 110.
Next, a convex portion 179 formed on the outer peripheral surface of the ring portion 171 of the rattling member 170 is formed in a groove portion 155 formed on the inner peripheral surface of the first cylindrical portion 151 of the pressing member 150 attached to the connector main body 110. The ring portion 171 is slid into the holding member 150 while being fitted. Then, the retainer main body 191 is elastically deformed, and the claw 93 is reciprocated in the radial direction, and the first through hole 111A of the connector main body 110, the second through hole 152 of the holding member 150, and the third through of the ring portion 171. The claw portion 93 is inserted into the third through hole 177 of the ring portion 171 so as to overlap with the hole 177. At this time, since the ring portion 171 is slid while the convex portion 179 of the ring portion 171 is fitted in the groove portion 155 of the holding member 150, the rattling member 170 does not rotate, and the first through hole 111A of the connector main body 110, the holding member The second through hole 152 of 150 and the third through hole 177 of the ring portion 171 can be accurately overlapped, and the claw portion 93 can be inserted into the third through hole 177. In this manner, the rattling member 170 is attached to the inside of the insertion port 150A formed by the presser member 150 having the ring portion 171 attached to the connector main body 110, and the rattling stopper 73 is disposed on the insertion port 150A. Mounted in an exposed state on the outside. It should be noted that there is no problem in attaching the retainer member 170 first and attaching the retainer 190 later.

  In the piping connector in which the rattling member 170 is mounted on the connector main body 110, the stopper 73 that is exposed to the outside of the insertion port 150A extends to the outside of the inner diameter of the insertion port 150A. For this reason, when a force in the insertion direction of the pipe 1 is applied to the ratchet stopper 73, the pipe connector moves in a direction in which the ratchet stopper 73 spreads outward. For this reason, even if the force of the insertion direction of the piping 1 is added to the stopper 73 which is exposed to the outside of the insertion port 150 </ b> A without intention, this connector for the pipe is exposed to the outside. It only moves in the expanding direction, and the rattling member 170 can be prevented from being pushed into the connector main body 110 from the insertion port 150A.

Next, connection of the pipe 1 to the pipe connector will be described.
When the pipe 1 having the bulge part 4 near the tip is inserted into the connector main body 110 from the insertion port 150A, the bulge part 4 first comes into contact with the contact surface 171A of the ring part 171 of the stopper member 170. When the pipe 1 is further inserted into the connector main body 110 (holding member 150), the curved surface of the long side portion on the abutting surface 171A side of the third through hole 177 of the ring portion 171 while elastically deforming the retainer main body portion 191. The claw portion 93 moves along 177A. A long side portion of the third through hole 177 of the ring portion 171 on the contact surface 171A side is formed by a curved surface 177A, and the claw portion 93 easily moves along the curved surface 177A. It can be smoothly inserted into the presser member 150). When the pipe 1 is further inserted into the connector main body 110, the claw part 93 of the retainer 190 is locked to the bulge part 4, and the pipe 1 is prevented from coming off. In this state, in this pipe connector, the O-ring 130 is in close contact with the distal end portion of the pipe 1 and the inner peripheral surface of the second cylindrical portion 112 of the connector main body 110, so that the pipe 1 is connected in a watertight manner.

  Further, when the rattling member 170 is pushed into the connector main body 110 (holding member 150), the connecting portion 75 functions as a hinge, and the rattling portion 73 is folded. At this time, since the inner periphery of the insertion port 150A is formed with an inclined surface inclined toward the back side, the outer surface portion 73D of the ratchet portion 73 slides along this inclined surface, and the rattling is stopped. The part 73 is easily folded. Then, when the pipe 1 is inserted into the pipe connector until it is in the retaining state, the ratchet stopper 73 of the rattling member 170 is located on the same circumference of the outer circumference of the pipe 1 and the connector main body 110. It is sandwiched between the inner peripheral surface. More specifically, the ratchet stop 73 is completely housed inside the insertion port 150A, the abutment surface 73B of the ratchet stop 73 abuts the outer peripheral surface of the pipe 1, and the ratchet stop 73 The outer side surface portion 73D comes into contact with the inner peripheral surface of the pressing member 150. As described above, when the pipe 1 is inserted into the connector main body 110 from the insertion port 150 </ b> A, the pipe connector can prevent the pipe 1 from shaking in the radial direction and can be prevented from coming off.

  Therefore, the pipe connector of the second embodiment can also connect the pipe 1 in a retaining state while suppressing rattling in one operation.

  In addition, when the pipe 1 is inserted into the connector main body 110 so as not to be detached, the pipe connector is completely housed inside the insertion port 150 </ b> A of the connector main body 110. It can be easily determined whether or not 1 is inserted in the retaining state. Further, since the connector main body 110 and the ratchet stopper 73 are different in color, it is easy to visually recognize whether the ratchet stopper 73 is accommodated in the connector main body 110. For this reason, this connector for piping can make it easier to determine whether or not the piping 1 is inserted into a retaining state.

  Further, in this piping connector, the ratchet portion 73 is connected to the outer peripheral edge of the three regions in the circumferential direction of the ring portion 171 via a connecting portion 75, and is divided into five in the circumferential direction in each region. For this reason, since this pipe connector makes it easy to fold the ratchet portion 73, the pipe 1 can be easily inserted from the insertion port 150A. Moreover, since this ratchet stopper 73 is divided | segmented into the circumferential direction, unless the force of a diameter reduction direction is intentionally applied to all the ratchet stoppers 73 at once at this pipe connector, 70 is hard to be pushed into the connector main body 110 from the insertion port 150A. For this reason, in this connector for piping, even if a force in the diameter-reducing direction is unintentionally applied to a part of the ratchet stopper 73, the rattle stopper 170 is pushed into the connector main body 110 from the insertion port 150A. Can be prevented.

<Example 3>
As shown in FIGS. 16 to 18, in the piping connector of Example 3, the retainer 290 is formed of a metal wire, the first through hole 211 </ b> A of the connector main body 110, the second through hole 252 of the holding member 150, The form of the third through hole 277 of the rattling stop member 170 is different from that of the second embodiment. Other configurations are the same as those of the second embodiment, and the same configurations as those of the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 18, the retainer 290 for the piping connector includes two first arc portions 291 </ b> A that overlap a circumference slightly larger than the outer diameter of the first cylindrical portion 111 of the connector main body 110, and two pieces A retainer body 291 comprising a second arc portion 291B, two first arc portions 291A are connected, one first claw portion 293 bent so as to protrude inward, the first arc portion 291A and the first arc portion 291A Two arcuate portions 291B are connected to each other, and two second claw portions 295 bent so as to protrude inward are provided. Between the two 2nd circular arc parts 291B, it is not connected but forms stagnation mouth 290A. The first claw portion 293 is formed of a pair of both side portions 293A extending inward in parallel from the end portions of the adjacent first arc portions 291A, and a central portion 293B connecting the tips of the both side portions 293A. As for each 2nd nail | claw part 295, the both-sides part 295A which continues from the both ends of the center part 295B to the edge part of the 1st circular arc part 291A and the edge part of the 2nd circular arc part 291B spreads outward.

  As shown in FIG. 16, the connector main body 110 has three pieces in which one first claw portion 293 and two second claw portions 295 of the retainer 290 are inserted on the same circumference of the first cylindrical portion 111. The first through hole 211A is formed. These first through holes 211A are formed with recesses 211B in which both ends of the slit shape extending in the circumferential direction are recessed toward the insertion port side. Both side portions 293A and 295A of the first claw portion 293 and the second claw portion 295 are fitted into the concave portion 211B, and the first claw portion 293 and the second claw portion 295 are prevented from coming out of the first through hole 211A. .

  The holding member 150 has three first through holes 252 into which one first claw portion 293 of the retainer 290 and two second claw portions 295 are inserted on the same circumference of the first cylindrical portion 151. Is formed. These second through holes 252 have the same shape as the first through holes 211 </ b> A formed in the first tube portion 111 of the connector main body 110.

  The ring portion 171 of the rattling stop member 170 is formed with one first claw portion 293 of the retainer 290 and three third through holes 277 into which the two second claw portions 295 are inserted on the same circumference. Has been. These third through holes 277 have a slit shape extending in the circumferential direction. Each of the third through holes 277 is formed by a curved surface 277A whose side surface on the contact surface 171A side swells outward.

Next, a procedure for mounting the O-ring 130, the pressing member 150, the back stopper member 170, and the retainer 290 to the connector main body 110 will be described.
First, the O-ring 130 is inserted into the second inner diameter portion 112 </ b> B of the second cylinder portion 112 of the connector main body 110.
Next, the stepped surface between the first cylindrical portion 151 and the second cylindrical portion 153 of the pressing member 150 contacts the stepped portion on the inner peripheral surface of the first cylindrical portion 111 of the connector main body 110 on the second cylindrical portion 112 side. The pressing member 150 is slid until the locking portion 154 of the pressing member 150 is locked in the locking hole 111B of the first tube portion 111 of the connector main body 110. Accordingly, the holding member 150 is fixed at a predetermined position in the connector main body 110, and the O-ring 130 can be prevented from coming out of the second tube portion 112 of the connector main body 110.

  Next, while the retainer body 291 is elastically deformed so as to widen the squeezing opening 290A of the retainer 290, the respective claws 293, 295 of the retainer 290 are moved to the first through holes 211A of the connector body 110 and the first members of the presser member 150. The retainer 290 is attached to the outer peripheral surface of the first cylindrical portion 111 of the connector main body 110 by being inserted into the two through holes 252. At this time, the first claw portion 293 and the both side portions 293A and 295A of the second claw portion 295 are fitted into the recesses provided at both ends of the first through hole 211A and the second through hole 252 and the first claw portion 293 and The second claw portion 295 is prevented from coming off from the first through hole 211A.

  Next, a convex portion 179 formed on the outer peripheral surface of the ring portion 171 of the rattling member 170 is formed in a groove portion 155 formed on the inner peripheral surface of the first cylindrical portion 151 of the pressing member 150 attached to the connector main body 110. The ring portion 171 is slid into the holding member 150 while being fitted. Then, the retainer main body portion 291 is elastically deformed and the claw portions 293 and 295 reciprocate in the radial direction, and the first through hole 211A of the connector main body 110, the second through hole 252 of the pressing member 150, and the ring portion 171 are moved. The claw portions 293 and 295 are inserted into the third through holes 277 of the ring portion 171 so as to overlap with the third through holes 277. At this time, since the ring portion 171 is slid while the convex portion 179 of the ring portion 171 is fitted in the groove portion 155 of the pressing member 150, the rattling member 170 does not rotate, and the first through hole 211A of the connector main body 110, the pressing member The second through-holes 252 of 150 and the third through-holes 277 of the ring portion 171 can be accurately overlapped, and the claw portions 293 and 295 can be inserted into the third through-holes 277. In this manner, the rattling member 170 is attached to the inside of the insertion port 150A formed by the presser member 150 having the ring portion 171 attached to the connector main body 110, and the rattling stopper 73 is disposed on the insertion port 150A. Mounted in an exposed state on the outside. There is no problem in attaching the retainer member 290 after attaching the stopper member 170 first.

  In the piping connector in which the rattling member 170 is mounted on the connector main body 110, the stopper 73 that is exposed to the outside of the insertion port 150A extends to the outside of the inner diameter of the insertion port 150A. For this reason, when a force in the insertion direction of the pipe 1 is applied to the ratchet stopper 73, the pipe connector moves in a direction in which the ratchet stopper 73 spreads outward. For this reason, even if the force of the insertion direction of the piping 1 is added to the stopper 73 which is exposed to the outside of the insertion port 150 </ b> A without intention, this connector for the pipe is exposed to the outside. It only moves in the expanding direction, and the rattling member 170 can be prevented from being pushed into the connector main body 110 from the insertion port 150A.

Next, connection of the pipe 1 to the pipe connector will be described.
When the pipe 1 having the bulge part 4 near the tip is inserted into the connector main body 110 from the insertion port 150A, the bulge part 4 first comes into contact with the contact surface 171A of the ring part 171 of the stopper member 170. When the pipe 1 is further inserted into the connector main body 110 (holding member 150), the curved surface of the long side portion on the abutting surface 171A side of the third through hole 277 of the ring portion 171 while elastically deforming the retainer main body portion 291. Each claw part 293,295 moves along 277A. Since the long side portion of the third through hole 277 of the ring portion 171 on the side of the contact surface 171A is formed by a curved surface 277A, the claws 293 and 295 easily move along the curved surface 277A. It can be smoothly inserted into the main body 110 (pressing member 150). Further, when the pipe 1 is inserted into the connector main body 110, the respective claws 293 and 295 of the retainer 290 are locked to the bulge part 4, and the pipe 1 is prevented from being detached. In this state, in this pipe connector, the O-ring 130 is in close contact with the distal end portion of the pipe 1 and the inner peripheral surface of the second cylindrical portion 112 of the connector main body 110, so that the pipe 1 is connected in a watertight manner.

  Further, when the rattling member 170 is pushed into the connector main body 110 (holding member 150), the connecting portion 75 functions as a hinge, and the rattling portion 73 is folded. At this time, since the inner periphery of the insertion port 150A is formed with an inclined surface inclined toward the back side, the outer surface portion 73D of the ratchet portion 73 slides along this inclined surface, and the rattling is stopped. The part 73 is easily folded. Then, when the pipe 1 is inserted into the pipe connector until it comes into a retaining state, the ratchet stopper 73 of the rattle stopper member 170 is located on the same circumference of the outer periphery of the pipe 1 and the holding member 150. It is sandwiched between the inner peripheral surface. More specifically, the ratchet stop 73 is completely housed inside the insertion port 150A, the abutment surface 73B of the ratchet stop 73 abuts the outer peripheral surface of the pipe 1, and the ratchet stop 73 The outer side surface portion 73D comes into contact with the inner peripheral surface of the pressing member 150. As described above, when the pipe 1 is inserted into the connector main body 110 from the insertion port 150 </ b> A, the pipe connector can prevent the pipe 1 from shaking in the radial direction and can be prevented from coming off.

  Therefore, the pipe connector of the third embodiment can also connect the pipe 1 in a retaining state while suppressing rattling in one operation.

  Further, in this piping connector, the retainer 290 is formed of a metal wire, the first through hole 211A of the connector main body 110, the second through hole 252 of the holding member 150, and the third through hole of the ratchet member 170. Since the configuration of 277 is different from that of the second embodiment and the other configurations are the same as those of the second embodiment, the same effects as those of the second embodiment described above can be obtained.

  That is, this pipe connector also determines whether or not the pipe 1 is inserted into the retaining state depending on whether or not the ratchet 73 is completely housed inside the insertion port 150A of the connector main body 110. It can be easily judged. At this time, since the connector main body 110 and the ratchet portion 73 are different in color, it is possible to more easily determine whether or not the pipe 1 is inserted into the retaining state.

  Also, in this connector for piping, the ratchet stopper 73 is connected to the outer peripheral edge of the ring part 171 via the coupling part 75 and divided in the circumferential direction. It becomes easy to insert the pipe 1 from the port 150A. Further, in this connector for pipes, the ratchet stopper 73 is divided in the circumferential direction. Therefore, even if a force in the reduced diameter direction is unintentionally applied to a part of the ratchet stopper 73, the rattle stopper 170 Can be prevented from being pushed into the connector main body 110 from the insertion port 150A.

The present invention is not limited to the first to third embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 to 3, when the pipe is inserted into the connector main body so as to prevent it from coming off, the ratchet stopper is completely stored in the connector main body, but a part of the rattle stopper is inserted. It may be exposed from the mouth.
(2) In the first to third embodiments, the connector main body and the ratchet stop are different in color, but may be the same color.
(3) In Example 1, the ratchet stopper is connected to the ring part in two regions via the connecting part, and in Examples 2 and 3, the rattle stopper is connected to the ring part in three areas via the connecting part. Although connected, the area | region where a rattling stop part is connected to a ring part via a connection part may be divided into four or more.
(4) In Example 1, the ratchet stop in each region was divided into seven in the circumferential direction, and in Examples 2 and 3, the ratchet stop in each region was divided into five in the circumferential direction. One ratchet part may be connected in each region, and the number is not limited to five or seven, but a plurality of ratchet parts may be joined.
(5) In Examples 1 to 3, the ratchet stopper has a trapezoidal shape, but may have other shapes. In this case, when pushed into the connector main body, the shape may be directly or indirectly sandwiched between the outer peripheral surface of the pipe and the inner peripheral surface of the connector main body on the same circumference of the outer peripheral surface of the pipe. .

DESCRIPTION OF SYMBOLS 1 ... Piping 4 ... Bulge part 10,110 ... Connector main body 10A, 150A ... Insert 70, 170 ... Gat member 71, 171 ... Ring part 73 ... Gat member 75 ... Connection part 90, 190, 290 ... Retainer 93,293,295 ... Claw (293 ... 1st claw, 295 ... 2nd claw)

Claims (6)

A pipe connector for connecting a pipe having a bulge near the tip in a watertight manner,
An insertion port is opened, and a connector body into which the pipe is inserted from the insertion port,
When the pipe is inserted into the connector main body from the insertion port, the retainer has a claw part that locks the bulge part and keeps the pipe from coming off.
It is attached to the inside of the insertion port of the connector main body, and while the bulge portion comes into contact and is pushed into the connector main body by one operation of inserting the pipe into the connector main body from the insertion port, A ratchet member having a plurality of ratchet portions that are folded and sandwiched directly or indirectly between the outer peripheral surface of the pipe and the inner peripheral surface of the connector body on the same circumference of the outer peripheral surface of the pipe When,
The connector for piping characterized by comprising.   The piping connector according to claim 1, wherein the ratchet portion extends outside the inner diameter of the insertion port when exposed to the outside of the insertion port.   3. The pipe connector according to claim 1, wherein the ratchet portion is housed in the connector body when the pipe is inserted into the connector body in a retaining state. 4.   The connector for piping according to any one of claims 1 to 3, wherein the connector main body and the ratchet stopper are different in color. The ratchet member is
A ring portion against which the bulge portion abuts,
A thin-walled connecting part that connects the ring part and the ratchet part,
The connector for piping according to any one of claims 1 to 4, wherein the connector is provided.   The piping connector according to any one of claims 1 to 5, wherein the ratchet portion is divided in a circumferential direction.

Images