JP4822394B2 - Connector for small diameter pipe connection - Google Patents

Description

  The present invention generally relates to a relatively thin and thin metal tube or resin tube (hereinafter referred to as a tube diameter of about 40 mm or less, which is provided as a supply path for oil supply or supply air to automobiles or various machines and devices. In particular, when connecting the pipe and the mating part, the air flow between the connector main body and the mating part is secured with a simple operation and at a low cost. In addition, the present invention relates to a connector for small-diameter pipe connection (hereinafter sometimes simply referred to as “connector”) that can stably maintain a clean environment inside the connector.

  This type of small-diameter pipe connection connector is interposed between the resin tube or the mating part and the pipe, and functions to ensure airtightness and proper connection of the flow path. Things are universal. In particular, recently, a number of connectors for small-diameter pipe connections that can achieve the intended purpose with a compact structure and simple operation have been proposed because of the demands for cost reduction and enhancement of functions. ing.

 For example, in a small-diameter pipe connection connector (hereinafter simply referred to as “connector”) shown in FIG. 31, a hole for fitting the pipe into the shaft core is penetrated, the flange part 200-1 at one end, and the other end connected to it. Is a connector main body 200 comprising a cylindrical portion 200-2, and in the vicinity of the flange portion 200-1 of the cylindrical portion 200-2, when assembled to the mating component, it is screwed into the female screw of the mating component. A male screw 200-4 is formed. A cutout portion 200-5 divided into four equal parts is formed in the outer circumferential direction excluding the formation portion of the male screw 200-4 in the cylindrical portion 200-2, and the cutout portions of the cutout portion 200-5 are respectively formed. The tongue-like elastic claw wall 200-6 is urged inward. The tip claw tip 200-7 of the elastic claw wall 200-6 is formed in a semicircular arc shape, and a groove part 200-8 is provided on the inner peripheral surface thereof, and the groove part 200-8 is connected to the seal ring member 50x before the pipe connection. It is used as a space for storing. Further, the flange portion 200-1 is preferably formed in a hexagonal nut shape so as to engage with a spanner when incorporated in a mating part, and the nodge extends over substantially the entire outer periphery of the nut-like flange portion 200-1. When the connector body 200 is screwed into the mating part and assembled, the nodge 200-9 functions as a spring washer substitute to prevent loosening. This contributes to the strong assembly of the connector body 200 (see, for example, Patent Document 1).

  Further, in the connector shown in FIG. 32, the seal ring member 50 and the bush are provided in the small diameter chamber 100-1 of the connector main body 100 in which the small diameter chamber 100-1 and the large diameter chamber 100-2 are provided through the shaft core. A claw that is internally biased forward by bending the vicinity of a notch window groove portion 100-3 that is provided with a member 60 and is formed in a facing portion formed by a peripheral wall of the large-diameter chamber 100-2. A cylindrical ring formed as a wall 100-4 and integrally formed with a tongue-like bullet wall 100-5 protruding forward from the bent portion, and further rotatable on the outer peripheral side of the peripheral wall of the small-diameter chamber 100-1. The outer engagement wall is provided with a confirmation member 102 having a sandwiched shape in which the member 101 is mounted and the engaging walls 102-1 and the supporting walls 102-2 are integrally projected on both opposing sides. 102-1 part side of connector body 100 Engage with the inside of the bent part of the claw wall part 100-4 with the state where the front wall part of the wall 100-5 and the front end part of the hanging wall 102-2 are hooked to the opposite side surface part formed by the connector main body 100. A connector for connecting a small-diameter pipe that can be configured has been proposed (see, for example, Patent Document 2), and the function of the confirmation member 102 makes it possible to reliably grasp the proper connection state.

  Further, in the connector shown in FIG. 33, the interior member 301 is integrally fixed to the rear wall portion 300-6 connected to the nut-shaped engagement wall 300-1 at the rear of the connector body 300, and inserted from the side surface of the interior member 301. The connection confirmation member 302 confirms the proper connection state of the small-diameter pipe Py and at the same time, the state is maintained. More specifically, as shown in FIG. When the connection of the small-diameter pipe Py is completed in an appropriate state, the convex portion of the tip confirmation claw 302-4 of the connection confirmation member 302 escapes from the concave portion 301-1 of the interior member 301, and the interior A semicircular pipe abutting wall 302-3 of the rear connection confirmation claw 302-2 is assembled to the outer wall part 301-2 of the member 301, and the rear wall of the rear spool part Py-2 of the small-diameter pipe Py. Press down on the part The contact state is confirmed and maintained by hitting the peripheral portion (see, for example, Patent Document 3).

In recent years, the functions required of this type of connector have been increasingly diversified, not only ensuring airtightness and proper connection of the flow path, but also foreign substances in the connector body and the flow path connected to it. In the connector for small diameter pipe connection as described above, in the connector with the small diameter pipe connected to the connector body, the rear open part is required. Various proposals have been made for means for preventing dust from being mixed into the system by attaching a dust cap made of an elastic member, and some of them have already been put into practical use (for example, patents). Reference 1).
JP 2003-194278 A JP-A-10-274367 JP 2004-263826 A

 The connector for connecting a small-diameter pipe disclosed in Patent Document 1 is a so-called pressure-resistant connector that secures a flow path between a small-diameter pipe and a mating part by directly screwing the connector body into the mating part. Compared to this type of connector, the assembly of the connector body and the mating part is strong despite the fact that it is compact in structure, and the airtightness of the connector body and the mating part can be secured simultaneously with the airtightness of the piping flow path. Excellent results have been confirmed. However, the above connector does not include a so-called connection confirmation member for confirming the connection state, and is confirmed by visual inspection when the connection is completed, by applying a pulling force to the piping, or by both means. Although the work is being carried out, such means depend on the skill level of each worker and leave some anxiety about the reliability. Moreover, the connector for thin-diameter pipe connection shown in the above-mentioned Patent Document 2 is a so-called quick for interposing between the thin-diameter pipe and the resin tube and connecting them in a healthy state to form a fluid flow path. Although it is a type of connector, it is recognized that an excellent result can be obtained such as the proper connection state of the piping can be easily confirmed by assembling the confirmation member and the maintenance of the connection state is ensured, Since the confirmation member largely overhangs outside the connector main body, there is a concern that the occupied space around the connector is increased, and unexpected damage is caused by contact with adjacent devices and parts.

  Furthermore, the connector for connecting a small diameter pipe disclosed in Patent Document 3 is an example of a pressure-resistant connector that functions to directly connect a small diameter pipe to a mating part, and an internal member provided integrally with the connector body. It has been reported that a connection confirmation member is provided, and the connection state of the pipe is confirmed by two connection confirmation claws on the front and rear sides, and it functions effectively to maintain it in a healthy state. However, when the front spool portion Py-1 of the pipe passes through the connection check claw when connecting the small-diameter pipe, the positioning of the connection check member becomes temporarily unstable, which may cause a malfunction. In addition, the rear spool portion Py-2 is not wiped by the rear connection confirmation claw, and is locked by pressing a half-circumferential portion of the outer periphery of the pipe Py with the semicircular pipe abutting wall 302-3. Therefore, when a large pulling force is applied to the pipe, it is predicted that the pipe cannot withstand the generated stress.

 In addition, the connector disclosed by the said patent documents 1 and 3 is in series in the front cylindrical part of a connector main body, without forming the external thread formation part and the notch part connected to it in the front cylindrical part of a connector main body so that FIG. Therefore, the entire length of the connector including the tip toe portion of the elastic claw wall portion must be extremely long, and a wide space is required for assembling the connector main body and connecting the pipes. Therefore, it is indispensable to process the mounting holes of the mating parts to which the connector is assembled, and it is an issue that is desired to be solved quickly in terms of processing cost. Further, since the pipe connected to the mating part via the connector has a so-called cantilever structure in which one end is gripped by the mating part and the connector, a force perpendicular to the longitudinal direction of the pipe If there is a problem, there is a fatal problem that it is not possible to cope with the stress sufficiently, and there is a concern that it may hinder connection work in a narrow work space, and there are problems that are desired to be solved. It was.

  The present invention is intended to solve the problems remaining in the prior art. Specifically, the structure is shortened to the minimum necessary length in the longitudinal direction, and the connector body is provided. Focusing on the structure of the backup sleeve and connection confirmation / locking member used in combination with the pipe, and the small-diameter pipe itself, and by making improvements to each member independently, it is a connector for mating parts even in a narrow work space Assembly of the main body and connection of small-diameter pipes via the connector can be easily performed, and the proper connection state of the pipes and the securing of the locked state after the pipe connection can be easily and accurately performed. On the other hand, when the protective cap related to the present invention is used in combination, it is possible to prevent dust from entering the connector system after pipe connection. Despite having a rugged structure, in addition to strong assembly, there is a small-diameter pipe connection connector that can ensure sufficient airtightness between the pipe flow path, the pipe connection connector and the mating parts even under severe conditions. It is to provide.

The present invention for solving the above-phase hand part side, and the inner diameter portion of interior seal ring and the backup sleeve is fitted on the small diameter pipe, a mating component leading to said bore opposite the inner peripheral portion An inner engagement wall formed so as to be connectable to the detachable tool is formed in the inner engagement wall, and a backup sleeve guide groove is formed in the inner engagement wall symmetrically in parallel with the axis of the shaft. The flange part that contacts the mating part corresponding to the approximate center, and the mating part side cylindrical part that is connected to the flange part are formed with male threads for screwing into the female thread of the mating part, and on the opposite side of the flange part to the mating part An engagement wall that can be connected to the detachable tool is formed, and a connector body in which a connection confirmation and lock member guide groove is formed through the engagement wall, and a tip of the inner diameter portion of the connector body in advance. An internal ring-shaped seal ring, and The inner diameter portion of the opposite side of the mating component in contact with Ruringu, the a is inserted through the groove backup sleeve guide substantially cylindrical body to be decorated, the through-hole to interpolate fitting the small diameter pipe the axis is is Nukise', the rear end of the through hole is provided small diameter piping spool receiving wall, small diameter portion which are separated by a stepped portion is formed on the inner circumferential portion of the mating part side mating part of the outer peripheral portion On the opposite side , a hook receiving groove for a connection confirmation and locking member connection confirmation claw that is perpendicular to the axial direction is formed, and a rear end of the outer peripheral portion corresponds to a backup sleeve guide groove of the connector body. A pair of connection confirmation and lock members assembled via a backup sleeve formed with a convex portion and a connection confirmation and lock member guide groove formed on the connector body outer engagement wall, Lock The material includes a pair of connection confirmation claws each having a front hook and a rear hook, and a presser plate having an abutting wall that is in contact with the outer peripheral portion of the small-diameter pipe on the side surface of the material. A pair of connection confirmation claws each having a hook receiving recess for accommodating the front hook before connection to the small-diameter pipe on the other connection confirmation and lock member, and a shaft core on the side surface thereof. And a holding plate having an abutting wall that comes into contact with the outer peripheral portion of the small-diameter pipe are integrally formed relative to each other in the axial direction, and assembled together so as to sandwich the connector body as a pair. A connection confirmation and lock member and a spool portion housed in the spool receiving wall of the backup sleeve are formed at the terminal, and a small diameter portion separated by a step portion is formed on the outer peripheral surface of the pipe end portion on the mating part side of the spool portion. Formed in front of the small diameter part A connector for connecting a small-diameter pipe, characterized in that the seal ring is composed of a small-diameter pipe externally fitted with the backup sleeve on the outer peripheral surface of the spool part including the stepped part. It is what.

  In the connection confirmation and lock member of the small-diameter pipe connection connector according to the present invention, one connection confirmation and lock member includes a pair of connection confirmation claws each having an intermediate hook in addition to the front hook and the rear hook. A pair of presser plates having abutting walls on the side of the shaft and abutting against the outer peripheral portion of the small-diameter pipe are formed in pairs in the axial direction, and the other connection confirmation and lock member has A pair of connection confirmation claws each having a hook receiving recess for storing the front hook before connection to the small-diameter pipe, and a presser plate having an abutting wall abutting the outer periphery of the small-diameter pipe on its side surface However, they are formed integrally with each other in the axial direction, and are assembled together so as to sandwich the connector body as a pair.

  Further, the small-diameter pipe connection connector according to the present invention is characterized in that, in the one connection confirmation / locking member, a shaft is attached to a side end of a rear hook provided on each of the pair of connection confirmation claws facing the axial direction. A taper wall inclined in the core direction is provided.

Furthermore, the small-diameter pipe connection connector according to the present invention is provided with a small notch in the hook receiving groove of the connection confirmation claw of the connection confirmation / lock member formed on the outer peripheral part of the backup sleeve opposite to the counterpart part. The back-and-forth of the back hook of the connection confirmation claw is assembled to the notch, thereby controlling the sliding of the backup sleeve in the longitudinal direction before connecting the small-diameter pipe.

  In the connector for small diameter pipe connection according to the present invention, the small diameter pipe spool receiving wall provided at the rear end portion of the through hole of the backup sleeve has a depth to accommodate the front wall portion of the small diameter pipe spool portion. It is characterized by being formed.

Connector the thin pipe connection according to the invention, the inner engagement wall which is formed in the inner peripheral portion of the mating component and the opposite side of the connector body is formed in Tsunagigo capable nut shape hexagonal wrench, the flange It is preferable that the outer engagement wall formed in the outer peripheral portion connected to the side opposite to the counterpart part of the portion is formed in a polygonal nut shape that can be connected to a spanner that is a detachable tool. .

  In the connector for connecting a small-diameter pipe according to the present invention, the ring-shaped seal ring and the substantially cylindrical backup sleeve, which are preliminarily installed in the inner diameter portion of the connector main body, are made of various rubbers, PA, POM, fluorine-based, respectively. It is preferable that the molding is performed by a material selected from synthetic resins such as resins.

The present invention is also the phase hand part side, and the inner diameter portion of interior seal ring and the backup sleeve is fitted on the small-diameter piping, tethered in the detachable tool on the opposite side in the peripheral portion and the mating component leading to said bore An inner engagement wall formed so as to be able to be fitted is formed, and a backup sleeve guide groove is formed in the inner engagement wall in parallel with the shaft core, and abuts against a mating part corresponding to substantially the center of the outer peripheral portion. flange portion, it is the cylindrical portion of the mating component side leading to the formation of a male screw for screwing the mating part of the female screw, Tsunagigo possible engagement in the detachable tool on the opposite side of the mating parts of the flange portion A notch window is formed to serve as a connection confirmation and lock member guide groove through the engagement wall, and hooks that are opposite to each other in the axial direction are provided at both ends of the notch window. A connector with a pair of connection confirmation claws formed as a single unit And body, a ring-shaped sealing ring which is pre-decorated at the tip portion of the inner diameter portion of the connector body, the inner diameter portion of the mating component and the opposite side of the seal ring, is inserted through the backup sleeve guide groove a substantially cylindrical body that is furnished Te, the through-hole to interpolate fitting the small diameter pipe the axis is Nukise', the rear end of the through hole is provided small diameter piping spool receiving wall, that person A small-diameter portion separated by a stepped portion is formed on the inner peripheral portion on the component side , and a receiving recess is formed on the side surface on the opposite side to the counterpart component on the outer peripheral portion, with which the front end wall of the opposing connection confirmation and lock member abuts. A back-up sleeve formed with a projection corresponding to the back-up sleeve guide groove of the connector main body at the rear end of the outer peripheral portion, and a connection confirmation and lock member guide groove formed in the connector main body outer engagement wall Cut off A pair of connection confirmation and locking member is inserted into outs windows, each of the connection confirmation and the locking member substantially semicircular abutting wall that abuts the outer periphery of the small-diameter piping to the other component side axis of the side wall to A front end wall and a rear side recess for accommodating the hooks of the connector body at symmetrical positions connected to each other on the opposite part side of the side wall excluding the abutting wall. Are formed in each, and a vertical rear wall is formed on the opposite side to the counterpart part connected to the rear recess, and a connection confirmation and lock member that holds the connector body as a pair together, and the terminal A spool portion that is housed in the spool receiving wall of the backup sleeve is formed, and a small diameter portion that is separated by a step portion is formed on the outer peripheral surface of the pipe end portion on the counterpart part side of the spool portion, and the seal ring is formed on the small diameter portion. Including the step The gist of the present invention is a connector for connecting a small-diameter pipe characterized by comprising a small-diameter pipe with the backup sleeve fitted on the outer peripheral surface of the other spool part.

In the pair of connection confirmation and locking members in the small diameter pipe connection connector according to the present invention, each front hook receiving recess before the small diameter pipe connection accommodates the hook of the connector main body, and its tip wall. Is in contact with the receiving recess of the backup sleeve to control the sliding of the backup sleeve in the longitudinal direction, and the backup sleeve after the small diameter pipe connection moves to the counterpart part side over the connection confirmation and lock member, The connection confirmation and locking member advances in the axial direction, and abuts the abutting wall against the outer periphery of the small-diameter pipe on the opposite side of the rear wall portion of the small-diameter pipe spool, The front end wall is abutted, and the hooks of the connector body are moved from the front concave portion to the rear concave portion and stored, and are integrally formed relative to each other in the axial direction. It is characterized in that the grapple so as to sandwich the connector body Te.

  Further, in the pair of connection confirmation / locking members incorporated in the small-diameter pipe connection connector according to the present invention, each front hook receiving recess is provided with a tapered wall that is inclined rearward on the outside. Is.

  Furthermore, in the small diameter pipe connection connector according to the present invention, the small diameter pipe spool receiving wall provided at the rear end portion of the through hole of the backup sleeve includes a front wall portion and a rear wall portion of the small diameter pipe spool portion. The spool portion is formed to a depth that accommodates all of the spool portion.

In the small-diameter pipe connector according to the present invention, the inner engagement wall which is formed in the inner peripheral portion of the mating component and the opposite side of the connector body is formed in Tsunagigo capable nut shape hexagonal wrench, the flange It is preferable that the outer engagement wall formed in the outer peripheral portion connected to the side opposite to the counterpart part of the portion is formed in a polygonal nut shape that can be connected to a spanner that is a detachable tool. .

  Further, in the connector for small diameter pipe connection according to the present invention, the ring-shaped seal ring and the substantially cylindrical backup sleeve that are preliminarily installed in the inner diameter portion of the connector main body are made of various rubbers, PA, POM, and fluorine resin, respectively. It is preferable to mold the material selected from synthetic resins such as the above.

Furthermore, the present invention provides a mating part on the side of the mating part that is fitted with a seal ring and a backup sleeve that are externally fitted to a small-diameter pipe, and an inner peripheral part on the opposite side of the mating part that is connected to the inner diameter part. An inner engagement wall formed so as to penetrate therethrough, and a flange for a backup sleeve guide is formed in the inner engagement wall in parallel with the shaft core, and a flange that abuts a mating part corresponding to substantially the center of the outer peripheral portion. parts, the male screw for screwing the mating part of the female thread is formed on the mating part side cylindrical portion continuous therewith, Tsunagigo possible engagement walls in the detachable tool on the side opposite to the mating part of the flange portion A connector main body formed with a notch window for connection confirmation and insertion of a lock member through the engagement wall, and a ring-shaped seal ring that is preliminarily installed at the tip of the inner diameter portion of the connector main body And touch the seal ring. The inner diameter portion of the mating component opposite, the a is inserted through the groove backup sleeve guide substantially cylindrical body to be decorated, the through-hole to interpolate fitting the small diameter pipe the axis is Nukise', the A small-diameter pipe spool receiving wall is provided at the rear end of the through hole, and a small-diameter portion separated by a step portion is formed on the inner peripheral portion on the counterpart component side, and the side surface on the opposite side of the outer peripheral portion from the counterpart component A back-up sleeve formed with a receiving recess in which the front end wall of the opposing connection confirmation and lock member abuts, and a convex portion corresponding to a back-up sleeve guide groove of the connector body formed at the rear end of the outer peripheral portion; A pair of connection confirmation / lock members inserted into the notch window for connection confirmation / lock member insertion formed on the outer engagement wall of the connector body, each connection confirmation / lock member having a specific thickness Have The mating component side axis of the handle plate has a butting wall of substantially semicircular abutting the outer periphery of the small-diameter pipe, the tip facing perpendicular to each other on the mating part side of the pressing plate except the projecting-out against the walls A wall is formed, and a vertical rear wall is formed on the opposite side of the mating part, and a ring-shaped spring that presses in the axial direction through each fixing plate is fixed to the center of the rear wall. The connection confirmation and lock member that holds the connector body as a pair, and a spool portion that is housed in the spool receiving wall of the backup sleeve are formed at the terminal, and is formed on the outer peripheral surface of the pipe end portion on the spool portion counterpart component side. Is formed with a small-diameter portion that is separated by a step portion, and includes a small-diameter pipe in which the seal ring is externally fitted to the small-diameter portion, and the backup sleeve is externally fitted to the outer peripheral surface of the mating part side including the step portion. The characteristic configuration requirements and Then, the gist of the connector for small diameter pipe connection.

Before Symbol pair of connection confirmation and the locking member of the small-diameter pipe connector according to the present invention, each front end wall of the front small-diameter pipe connection abuts and the receiving recess of the backup sleeve in the longitudinal direction of the backup sleeve The back-up sleeve after connecting the small-diameter pipe moves over the connection confirmation / locking member and moves to the mating part side , and the connection confirmation / locking member moves in the axial direction by pressing the ring-shaped spring. Proceeding, abutting the respective abutting walls against the outer periphery of the small-diameter pipe on the opposite side of the rear wall portion of the small-diameter pipe spool portion in the axial direction, and at the same time mutually connecting the tip walls to each other The connector body is assembled in such a manner that the connector main body is sandwiched in a pair.

  In the small diameter pipe connection connector, the small diameter pipe spool receiving wall provided at the rear end portion of the through hole of the backup sleeve includes the front wall portion and the rear wall portion of the small diameter pipe spool portion. The spool portion is formed to a depth that accommodates all of the spool portion.

Inner engagement wall is further formed on the opposite side inner peripheral portion and the mating parts of the connector body according to the present invention is formed in Tsunagigo capable nut shape hexagonal wrench, connected to opposite side of the flange portion mating parts The outer engagement wall formed on the outer peripheral portion is preferably formed in a polygonal nut shape that can be connected to a spanner that is a detachable tool .

  In the above-described connector for small-diameter pipe connection according to the present invention, the ring-shaped seal ring and the substantially cylindrical backup sleeve, which are preliminarily installed in the inner diameter portion of the connector body, are made of various rubbers, PA, POM, fluororesin, etc. It is preferable that the molding is performed with a material selected from synthetic resins.

In the small-diameter pipe connector according to the present invention, the side opposite the opening and the flange portion of the connector body, and its mating component opposite mating parts, including thin pipe insertion portion extending to the rear wall portion from the outside engagement wall of It is preferable that the elastic dustproof cap is attached to the part.

In the connector for small-diameter pipe connection according to the present invention, the elastic dustproof cap is formed of a material selected from various rubbers or synthetic resins such as PA, POM, and fluororesin, and conforms to the outer peripheral portion of the connector body. A flange portion to be attached to the connector body flange portion, a grip portion provided on the opposite side of the flange portion to the counterpart component, and a connector body outer engagement connected to the opposite side of the counterpart portion It is preferable that the outer peripheral portion formed in a shape conforming to the wall, a vertical rear end portion connected to the outer peripheral portion, and an inner peripheral portion wound around the outer peripheral portion of the small-diameter pipe.

In the connector for connecting a small diameter pipe according to the present invention, the small diameter pipe that is inserted into the inner diameter portion of the connector main body and connected to the mating part is an outer peripheral part opposite to the mating part of the spool part formed at the terminal. In addition, a separate protrusion is provided symmetrically across the shaft core, and the protrusion is fitted into the backup sleeve guide groove of the connector body to prevent rotation of the small-diameter pipe with respect to the connector body. It is characterized by.

Further, in the small-diameter pipe according to the invention, it is preferable that the separate convex portion provided on the outer peripheral portion on the opposite side to the counterpart part of the spool portion is integrally joined by brazing or welding. Is.

In the above-mentioned connector for small diameter pipe connection according to the present invention, a spool portion and an end of the spool portion on the opposite side to the counterpart component are connected to the end of the small diameter pipe that is inserted into the inner diameter portion of the connector body and connected to the counterpart component. A separate substantially cylindrical auxiliary tool having a convex portion provided symmetrically across the core is prepared, the cylindrical auxiliary tool is fixed at a predetermined position on the small-diameter piping terminal, and the small-diameter pipe spool portion and the thin-type auxiliary tool are fixed. It is characterized in that it is a non-rotating stop for the connector body of the diameter pipe.

  Further, in the small diameter pipe according to the invention, it is preferable that the cylindrical auxiliary tool fixed at a predetermined position of the small diameter pipe is integrally fixed to the outer periphery of the small diameter pipe by caulking or brazing. It is a thing.

The small diameter pipe connection connector according to the present invention is such that the connection confirmation and lock member inserted from the side surface of the outer engagement wall of the connector body is on the side opposite to the counterpart part of the rear wall portion of the small diameter pipe spool. By firmly abutting from the left and right sides of the outer peripheral portion of the connector body and sandwiching the connector body, a strong connection state that can sufficiently oppose a large pulling force applied to the small-diameter pipe is stably secured. . In addition, the connection and the confirmation of the appropriateness of the connection should be performed easily and simply with a simple operation with a slight force to pinch the push plate of the connection / locking member with the fingers from the left and right. Can do. Further, the connector body according to the present invention is formed by forming, in parallel with the outer peripheral cylindrical part of the inner diameter part that houses the seal ring and the backup sleeve, a male screw that is screwed into the female screw of the mating part. Has been greatly shortened, making it easy to connect small-diameter pipes in a narrow working space, and at the same time being able to sufficiently cope with a load perpendicular to the connector body in the longitudinal direction. In addition, the female screw of the mating part to be screwed with the connector main body and the receiving hole portion including the first and second engaging walls need only be processed shallower than before, so that the processing cost can be greatly reduced. Can do. In addition, since the structure of the connector body is simplified, the manufacturing means can be injection-molded and forged in addition to normal cutting, and the accompanying connection confirmation and lock member is also partially manufactured. In addition, injection molding and forging are possible, and a significant reduction in manufacturing costs can be expected.

Further adding the effect of the present invention, the external force such as impact on the connector body is reduced by the action of the elastic protective cap that covers and assembles the open part opposite to the mating part including the flange part of the connector body. In addition to preventing damage to the connector, the dust-proof effect prevents wear of the seal ring, etc., improving its life performance and contributing to cost, and achieving cleanliness in the system to ensure stable airtightness Maintained. In addition, by molding the bush member in the present invention with PA, POM, fluorine-based resin, etc., the sliding of the part at the time of pipe insertion can be made smooth and the generation of scratches on the pipe surface can be prevented beforehand. . Thus, according to the present invention, the pressure-resistant connector used for directly connecting the counterpart part and the small-diameter pipe can be provided at a low cost with a compact structure, and the connection state after the pipe connection is maintained. Since the connection confirmation and lock member secures the pipe from both sides on the opposite side of the pipe spool part, stable operation is guaranteed even under severe conditions such as vibration factors. .

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
FIG. 1 is a two-sided view showing a pipe connection state of an embodiment of a small-diameter pipe connection connector according to the present invention, and a sectional view of a specific part in FIG. 1 (a). Side view, (b) is a rear view thereof, (c) is a sectional view taken along line AA in FIG. (A), (d) is a sectional view taken along line BB, and (e) is a sectional view taken along line CC. FIG. 2 is a two-side view showing the state of each member associated with the connector main body before pipe connection in the same embodiment, and a sectional view of a specific part in FIG. , (B) is a rear view thereof, (c) is a sectional view taken along the line DD in FIG. (A), (d) is a sectional view taken along the line EE, (e) is a sectional view taken along the line FF, and FIG. 3 is a two-view diagram for explaining a state in the middle of connection of a small-diameter pipe in the same embodiment, and a cross-sectional view of a specific portion in FIG. (B) is a rear view thereof, (c) is a sectional view taken along line GG in FIG. (A), (d) is a sectional view taken along line HH, and (e) is a sectional view taken along line II. 4 and FIG. 4 are two views showing a single body of the connector body for small-diameter pipe connection in the same embodiment, (a) is a partially longitudinal side view, (b) is a rear view thereof, and FIG. 5 is in the embodiment. FIG. 4 is a four-side view showing a backup sleeve alone, in which (a) is a vertical side view, (b) is a 90-degree vertical side view, (c) is a rear view, and (d) is an essential part in (c). 6 is an enlarged rear view, FIG. 6 is a two-view drawing showing a pair of connection confirmation and locking members incorporated in the embodiment, (a) is a side view thereof, and (b) is an arrow at the center in FIG. FIG. 7 is a cross-sectional view, and FIG. 7 shows one of the connection confirmation / locking members 3 of the pair of connection confirmation / locking members incorporated in the embodiment. In the figure, (a) is a side view thereof, (b) is a front view thereof, (c) is a cross-sectional plan view thereof, and FIG. 8 is a connection confirmation / locking member incorporated in the embodiment in the other connection. FIG. 9 is a three-side view of the confirmation and lock member, where (a) is a side view thereof, (b) is a rear view thereof, (c) is a plan view thereof, and FIG. 9 is a part of a small-diameter piping terminal incorporated in the same embodiment. FIG. 10 is a cutaway side view, FIG. 10 is a two-side view showing a pipe connection state in another embodiment of the small diameter pipe connection connector according to the present invention, and a sectional view of a specific part in FIG. (B) is a rear view thereof, (c) is a cross-sectional view taken along line JJ in FIG. (A), (d) is a cross-sectional view taken along line KK, and (e) is a cross-sectional side view partially cut away. FIG. 11 is a cross-sectional view taken along line L-L, and FIG. 11 is a two-sided view showing the state of each connector associated with the connector main body before pipe connection in the same embodiment. It is sectional drawing of the specific site | part in a), (a) is the longitudinal side view, (b) is the back view, (c) is the MM sectional view taken on the same figure (a), (d) N- N-line cross-sectional view, (e) is also a cross-sectional view taken along the line OO, FIG. 12 is a two-side view showing a pair of connection confirmation and locking members incorporated in the same embodiment, (a) is a side view thereof, (b) ) Is a cross-sectional view taken along the arrow in the center of FIG. 13A, and FIG. 13 is a three-view diagram of one connection confirmation / lock member of the pair of connection confirmation / lock members incorporated in the embodiment. ) Is a side view thereof, (b) is a front view thereof, (c) is a cross-sectional plan view thereof, and FIG. 14 is a pair of connection confirmation / locking members incorporated in the embodiment, of the other connection confirmation / locking member. (A) is a side view thereof, (b) is a rear view thereof, (c) is a plan view thereof, and FIG. The 2nd figure which shows the pipe connection state of the further another Example in the connector for thin diameter piping which concerns on this, and sectional drawing of the specific site | part in the same figure (a), (a) is the partially notched longitudinal side view , (B) is a rear view thereof, (c) is a cross-sectional view taken along the line P-P in FIG. (A), and FIG. 16 is a two-plane view showing a state of each member associated with the connector main body before pipe connection in the same embodiment. FIG. 4 is a cross-sectional view of a specific portion in FIG. 2A, FIG. 2A is a longitudinal side view thereof, FIG. 2B is a rear view thereof, FIG. 2C is a cross-sectional view taken along the line Q-Q in FIG. FIG. 17 is a two-side view for explaining the state in the middle of connecting the small-diameter pipe in the same embodiment, and a cross-sectional view of a specific part in FIG. (B) is a rear view thereof, (c) is a cross-sectional view taken along line RR in FIG. (A), and FIG. 18 is a connector for connecting a small-diameter pipe of the same embodiment. FIG. 19A is a partially cutaway side view, FIG. 19B is a rear view thereof, and FIG. 19 is a four-view view showing a backup sleeve alone incorporated in the same embodiment. ) Is a vertical side view of the same, (b) is a 90-degree vertical side view of the same figure (a), (c) is a rear view of the same figure (a), (d) is an Ei in FIG. 20 is a three-side view of one connection confirmation / lock member and a second connection confirmation / lock member of the pair of connection confirmation / lock members incorporated in the embodiment. Fig. (A) is a side view of one connection confirmation / lock member, Fig. (B) is a plan view thereof, Fig. (C) is a side view of the other connection confirmation / lock member, and Fig. (D) is a drawing thereof. FIG. 21E is a cross-sectional view of the central portion in FIG. 21A and FIG. 21C, and FIG. The two-side view which shows the pipe connection state of further another Example in a nectar, and sectional drawing of the specific site | part in the same figure (a), (a) is the partially notched longitudinal side view, (b) is the back surface (C) is a sectional view taken along the line S--S in FIG. (A), FIG. 22 is a two-view diagram showing the state of each member associated with the connector main body before pipe connection in the same embodiment, and FIG. ) Is a cross-sectional view of a specific portion, (a) is a longitudinal side view thereof, (b) is a rear view thereof, (c) is a cross-sectional view taken along line TT in FIG. A two-sided view for explaining a state in the middle of connection of a small-diameter pipe, and a cross-sectional view of a specific part in (a), (a) is a partially cutaway vertical side view, and (b) is a rear view thereof. , (C) is a cross-sectional view taken along the line U-U in FIG. (A), and FIG. (A) is a partially longitudinal side view, (b) is a rear view thereof, FIG. 25 is a three-view view of a connection confirmation and lock member incorporated in the same embodiment, (a) is a side view thereof, (b) ) Is a front view in the direction of the arrow in FIG. 10A, FIG. 26C is a partially cross-sectional plan view thereof, and FIG. 26 is a pipe connection state of still another embodiment of the connector for small-diameter pipe connection according to the present invention. 2A is a partially cutaway vertical side view, FIG. 27B is a rear view thereof, FIG. 27 is a partially cutaway side view of a small-diameter piping terminal incorporated in the embodiment, and FIG. It is a 2nd page figure which shows the pipe connection state of the further another Example in the connector for thin diameter piping which concerns on this invention, (a) is the partially notched longitudinal side view, (b) is the back view, FIG. Is a two-side view showing a small-diameter piping terminal incorporated in the embodiment, (a) is a partially broken side view (B) is the rear view, FIG. 30 is a two-view drawing showing another embodiment of the small-diameter piping terminal incorporated in the embodiment, (a) is a partially broken side view, and (b) is the rear view. FIG.
[Example]

Hereinafter, the present invention will be described examples by More specifically, the present invention is thereby not intended to be bound, it is possible to freely design changes within the scope of the gist of the present invention.
Here, for convenience of explanation, the counterpart component side that is the leading end side of the small-diameter pipe is referred to as “front”, and the side opposite to the counterpart component that is the rear end side of the narrow-diameter pipe is referred to as “rear”.

  The small-diameter pipe connection connector (hereinafter sometimes simply referred to as “connector”) according to the first embodiment of the present invention has a small-diameter pipe P inserted into the shaft core as shown in FIGS. A connector main body 1 to be assembled to a part, a seal ring 5 preliminarily installed at the tip of an inner diameter portion 1-3 of the connector main body 1, and an inner diameter of the rear inner portion 1-3 in contact with the seal ring 5 Inserted through the backup sleeve 2 and the connection confirmation / lock member guide groove 1-7 provided on the outer engagement wall 1-4 at the rear of the flange 1-1 of the connector main body 1, and the small diameter pipe P spool Connection confirmation / locking member 3 that locks the connection state of the pipe P by applying pressure to the outer peripheral part behind the part P-1 and the small-diameter pipe P connected to the mating part 4 via the connector body 1 And basically consists of As shown in FIG. 4, the connector main body 1 in this example includes a ring-shaped seal ring 5 on the front mating part side of the shaft core, and a substantially cylindrical backup sleeve 2 on the back, preferably in contact with the seal ring 5. The inner diameter portion 1-3 in which the inner diameter portion is housed, and the inner peripheral portion connected to the inner diameter portion 1-3 are connected to a detachable tool, for example, a hexagonal wrench in this example. A hexagonal inner engagement wall 1-5 is perforated, and the circumferential position of the backup sleeve 2 is specified in the inner engagement wall 1-5 symmetrically in parallel with the axis. For this purpose, a backup sleeve guide groove 1-6 is formed. On the other hand, at the center of the outer periphery of the connector main body 1, a circular flange portion 1-1 that is flush with the mating component 4 is flush with a female screw 4-4 of the mating component 4 at the front cylindrical portion. A male screw 1-2 for assembly is formed, and an outer peripheral portion connected to the rear of the flange portion 1-1 has a shape that can be connected to a detachable tool such as a spanner, in this example, a hexagonal shape. The outer engagement wall 1-4 is formed, and the outer engagement wall 1-4 is vertically penetrated in the axial direction so that two connection confirmation / lock member guide grooves 1-7 are formed in parallel with each other. ing. At the rear of the connector body 1, a shape that can be connected to a detachable tool, that is, a hexagonal inner engagement wall 1-5 or outer engagement wall 1-4 is provided, so Assembling with a general-purpose attaching / detaching tool such as a spanner or hexagonal wrench can be easily and reliably performed. The connector main body 1 can be attached to and detached from the mating component 4 by operating the backup sleeve guide groove 1-6 provided on the inner engagement wall by applying a minus driver-like tool. Tool selection is more extensive. As described above, the structure of the connector body 1 in this example is extremely compact and has a simple design. Therefore, in the production, for example, forging, forging by parts homer, metal and resin injection molding, etc. are mass-produced. Since the orientation processing means can be easily selected, the processing cost can be greatly reduced, and it contributes to shortening the longitudinal direction of the connector body 1 and increases the strength against the vertical load after assembly to the mating part. In addition, it is possible to facilitate the assembly of the connector main body 1 and the pipe connection work in a narrow work area.

  In this example, the seal ring 5 that is preliminarily installed at the tip of the inner diameter portion 1-3 of the connector main body 1 is externally fitted to the end of the pipe P as shown in FIG. 4 is made of a ring-shaped elastic member that functions to maintain pressure tightness on the second engagement wall 4-3 and maintain the airtightness of the flow path 4-1, and in this example, a heat-resistant synthetic resin is used. Adopted. In contact with the seal ring 5, the inner diameter portion 1-3 is provided behind the inner ring portion 1. When the small-diameter pipe P is connected, the end of the pipe P is externally fitted to the front of the pipe spool portion P- 1, and the mating component 4. The backup sleeve 2 that is inserted into the second engagement wall 4-3 and contributes to maintain the airtightness of the flow path 4-1 by the sealing 5 is connected to the inner engagement wall 1-5 of the connector body 1. Is a substantially cylindrical body that is inserted through a backup sleeve guide groove 1-6 formed in the interior, and has a through hole 2-6 into which a small-diameter pipe P is inserted into the shaft core as shown in FIG. And a spool portion receiving wall 2-5 of the small-diameter pipe P is provided at the rear end portion of the through hole 2-6, and the receiving wall 2-5 in this example is the small-diameter pipe spool portion P-. It is formed so as to accommodate the front half of 1, ie, the front wall portion P-3. A small-diameter portion 2-8 separated by a step portion 2-7 is formed in the inner peripheral portion in front of the through-hole 2-6, and these structures are taken into consideration when being fitted to the end of the small-diameter pipe P. Thus, it is manufactured according to the size and shape. On the rear side of the outer periphery of the backup sleeve 2 is formed a hook receiving groove 2-2 for a connection confirmation and locking confirmation claw of the lock member 3 that is perpendicular to the axial direction, and is connected to a small diameter pipe as shown in FIG. The rear hook 3-5 of the previous connection confirmation claw A3-3 is housed, and the position of the connection confirmation / locking member 3 before pipe connection is specified, but one end of the hook receiving groove 2-2 is shown in FIG. As shown in a), a small notch 2-4 is provided, and the front and rear of the rear hook 3-5 of the connection confirmation claw A3-3 are assembled to the notch 2-4 as shown in FIG. The position of the backup sleeve 2 is specified by limiting the sliding in the longitudinal direction. A convex portion 2-3 corresponding to the backup sleeve guide groove 1-6 of the connector main body 1 is formed at the rear end of the outer peripheral portion of the backup sleeve 2, and when the backup sleeve 2 is installed in the connector main body, It functions as a guide for specifying the position in the direction. The backup sleeve 2 in this example employs a heat-resistant resin, which is an elastic member, like the seal ring member 5 as a material, and is usually manufactured by processing means such as injection molding, so that it can be mass-produced at low cost. .

  The connection confirmation / locking member 3 in this embodiment is connected via a connection confirmation / locking member guide groove 1-7 formed on the outer engagement wall 1-4 of the connector body, as is apparent from FIGS. It is incorporated and functions to maintain the connection state firmly at the same time as confirming that the connection state of the small-diameter pipe P is completed in a healthy state, but its basic structure is as shown in FIG. A pair of connection confirmation / locking members 3, one connection confirmation / locking member having a pair of connection confirmation claws A3-3 each having a front hook 3-4 and a rear hook 3-5, A presser plate A3-1 having an abutting wall A3-12 that abuts the outer peripheral portion of the small-diameter pipe P on the shaft core is integrally formed relative to the shaft core direction, and the other connection confirmation and lock The member is provided with the front hook 3-4 before the small diameter pipe is connected. A pair of connection confirmation claws B3-14 each having a hook receiving recess 3-7 to be accommodated, and a holding plate B3-2 having an abutting wall B3-13 abutting on the outer periphery of the small-diameter pipe on the side surface thereof Are integrally formed relative to each other in the axial direction, and together form a pair to constitute a connection confirmation / lock member 3, which is assembled so as to sandwich the connector body 1 from the left and right. Each of the pair of left and right connection confirmation and lock members 3 is more specifically shown in FIGS. 7 and 8, but according to one connection confirmation and lock member shown in FIG. 7, as shown in FIG. The connection confirmation claw A3-3 is formed with a wide front hook 3-4 at the tip thereof and a rear hook 3-5 having a narrower width at the rear thereof facing the tip in the axial direction. A tapered wall 3-6 that is inclined rearward is formed at the tip of the rear hook 3-5. A presser plate A3-1 connected by a rear wall A3-8 is provided on the side surface of the connection check claw A, and the front vertical tip end A3-10 of the presser plate A and a small diameter in the axial center direction connected thereto. Arc-shaped abutting walls A <b> 3-12 that are in contact with the outer peripheral portion of the pipe P are formed integrally with each other in the vertical direction. According to the other connection confirmation / lock member shown in FIG. 8, a pair of connection confirmation claws B3- each having a hook receiving recess 3-7 for accommodating the front hook 3-4 before the small-diameter pipe is connected. 14 and a side of the connection confirmation claw B3-14 are provided with a pressing plate B3-2 connected by a rear wall portion B3-9, and a front vertical tip B3-11 of the pressing plate B3-14 and connected thereto. In the axial direction, arc-shaped abutting walls B3-13 that are in contact with the outer peripheral portion of the small-diameter pipe P are integrally formed so as to be opposed to each other in the vertical direction. Thus, the connection confirmation and lock member 3 in this example is formed.

  In the present example, the connection confirmation / locking member 3 is connected to the connector body 1 from the left and right via the connection confirmation / locking member guide groove 1-7 of the connector body 1 as shown in FIG. One connection confirmation claw A3-3 and its front hook 3-4 are inserted into the hook receiving recess 3-7 of the other connection confirmation claw B. (5) The backup sleeve 2 is accommodated in the hook receiving groove 2-2 so as to sandwich the tip of the backup sleeve 2 from above and below in the axial direction. When the small-diameter pipe P is pushed from the rear side of the connector body 1 in this state, the front wall portion P-3 of the spool portion P-1 is housed in the spool receiving wall 2-5 at the rear end of the backup sleeve 2, and the seal in front of the spool portion P-1 is stored. The ring 5 is wound around the pipe P and is pressed against the second engagement wall 4-3 of the mating part 4 to ensure airtightness of the flow path 4-1, but at this time, as shown in FIG. The rear hook 3-5 of the connection confirmation claw A3-3 that has been in the hook receiving groove 2-2 of the sleeve 2 is pushed up by the front wall P-3 of the spool coming into contact with the tapered wall 3-6 at the front end and removed. The front hook 3-4 of the one connection confirmation claw A3-3, which has been expanded in the radial direction and simultaneously accommodated in the hook receiving recess 3-7 of the other connection confirmation claw B, is also expanded in the outer diameter direction. Then, it escapes from the hook receiving recess 3-7. Therefore, both the left and right connection confirmation claws A3-3 and B3-14 can be slid toward the axis, and the two holding fingers hold both the holding plates A3-1 and B3-2 in a direction perpendicular to the axis). By pushing in, the front end portions A3-10 and B3-11 of the presser plates A3-1 and B3-2 come into contact with each other, and at the same time, the abutting walls A3-12 of both the front end portions A3-10 and B3-11 and B3-13 hits the outer periphery of the small-diameter pipe P from both the left and right, and the front hook 3-4 of the one connection confirmation claw A3-3 is connected to the rear wall B3-9 of the other connection confirmation claw B3-14. 1 is confirmed, and a normal connection state as shown in FIG. 1 is confirmed, and at the same time, at the rear of the spool portion P-1 of the small-diameter pipe P, a strong lock state is secured to hold the outer peripheral portion of the pipe P from the left and right. Is done. Thus, the suitability of the small diameter pipe connection state according to this example is easily confirmed by sliding the pair of left and right connection confirmation members 3 toward the axial center, and after the small diameter pipe P is connected, As shown in FIG. 1, the connecting state of the pipe is established by assembling the lock member 3 integrally on the left and right sides so as to be sandwiched from the left and right behind the spool portion P- 1 of the small-diameter pipe P of the connector body 1. Lock firmly.

  As shown in FIG. 9, the small-diameter pipe P incorporated in the present embodiment is formed with a spool portion P-1 housed in the spool receiving wall 2-5 of the backup sleeve 2 at the terminal, and the spool portion P-1 A small-diameter portion P-6 separated by a step portion P-5 is formed on the outer peripheral surface in the vicinity of the front pipe end portion P-2, and the seal ring 5 is connected to the small-diameter portion P-6, and the step portion P-5. The backup sleeve 2 is fitted on the outer peripheral surface in front of the spool portion P-1 and is pressed against the second engagement wall 4-3 of the mating part 4 so that the airtightness of the flow path 4-1 is maintained. Thus, according to the connector for small-diameter pipe connection according to the present example, not only the structure of the connector body 1 but also the accompanying backup sleeve 2, the connection confirmation and lock member 3 and the seal ring 5 have a relatively simple structure, Moreover, it has been confirmed that confirmation of an appropriate connection state and maintenance thereof can be accomplished extremely efficiently and accurately without requiring a particularly complicated operation.

  In the connection confirmation and lock member 3 incorporated in the connector main body 1, as shown in FIGS. 10 to 14, one connection confirmation and lock member includes, in addition to the front hook 3a-4 and the rear hook 3a-5, A pair of connection confirmation claws A3a-3 each having an intermediate hook 3a-15, and a presser plate A3a-1 having an abutting wall A3a-12 that is in contact with the outer peripheral portion of the small-diameter pipe P on the side surface thereof Are formed integrally with each other in a direction perpendicular to the axis of the shaft, and the other connection confirmation and lock member is provided with a hook receiving recess 3a-7 for housing the front hook 3a-4 before connecting the small-diameter pipe. A pair of connection confirmation claws B3a-14, respectively, and a presser plate B3a-2 having abutment wall B3a-13 abutting on the outer periphery of the small-diameter pipe P on the side of the shaft, are perpendicular to the shaft. Each integrally formed relative to In addition, except that it is configured to be assembled so as to sandwich the connector main body 1 as a pair, a small-diameter pipe connection connector is configured substantially in the same manner as in Example 1, In the confirmation of the connection state of the pipe and the lock after the connection, almost the same results were confirmed.

  As shown in FIG. 18, the small-diameter pipe connection connector according to the present embodiment penetrates from the outer engagement wall 1a-4 of the connector main body 1a to the inner engagement wall 1a-5 in the direction perpendicular to the shaft core. A pair of connection confirmation claws 1a-8 having a notch window 1a-10 also serving as a lock member guide groove and having hooks 1a-9 opposite to each other with a shaft core at the tip on both sides of the notch window 1a-10. Is provided integrally with the connector main body 1a, and a backup sleeve 2a preliminarily installed together with the seal ring 5 at the tip of the inner diameter portion 1a-3 of the connector main body 1a has a through-hole as shown in FIG. A small-diameter pipe and a small-diameter pipe spool receiving wall 2a-5 provided at the rear end are formed to a depth that accommodates the entire spool P-1 of the small-diameter pipe P. In the same position As shown in a), (b), and (d), an abutting recess 2a-12 made of a shallow recess is formed in which the tip wall A3b-24 and the tip wall B3b-25 of the connection confirmation / locking member 3b are in contact with each other. And is inserted into the notch window 1a-10 also serving as a connection confirmation and locking member guide groove formed on the outer engagement wall of the connector body 1a, and functions to confirm the connection state of the small-diameter pipe P As shown in FIG. 20, the connection confirmation and lock member 3b is a pair of connection confirmation and lock members that are symmetrical to each other, and each connection confirmation and lock member includes a side wall that corresponds to the press plate in each of the above embodiments. A3b-16 and B3b-17 have substantially semicircular abutting walls A3b-28 and B3b-29 that are in contact with the outer periphery of the small-diameter pipe on the front axis side of A3b-16 and B3b-17, and the front side of the side wall excluding the abutting wall Phase Front end walls A3b-24 and B3b-25 that are perpendicular to each other are formed, and front recesses A3b-18 and B3b-20 and rear recesses A3b-19 for accommodating the hooks of the connector main body are provided at the vertically symmetrical positions connected to the front end walls A3b-24 and B3b-25. And B3b-21 are formed respectively, and vertical rear walls A3b-26 and B3b-27 are formed in the rear of the rear concave portion so as to sandwich the connector body 1a as a pair. Except for the above, a small-diameter pipe connection connector was configured substantially in the same manner as in Example 1, and as a result of verifying the connection state of the pipe and the locked state after connection, substantially the same results were confirmed.

  As shown in FIG. 24, the connector main body 1b in this embodiment also serves as a connection confirmation and locking member guide groove that penetrates the outer engagement wall 1b-4 in the axial direction and reaches the inner engagement wall 1b-5. Although the cutout window 1b-10 is formed, the connection confirmation claws 1a-8 provided on both sides of the cutout window 1a-10 in the third embodiment are omitted. In addition, the connection confirmation and lock member 3c in this example is the same as that of each of the above embodiments in that it is a pair of connection confirmation and lock members symmetrically as shown in FIG. Is provided with abutting walls A3c-28 and B3c-29 that contact the outer peripheral portion of the small-diameter pipe P on the front axis side of the presser plates A3c-16 and B3c-17 having a specific thickness. Front end walls A3c-24 and B3c-25 that face each other vertically are formed in front of each of the presser plates except for, and vertical rear walls A3c-12 and B3c-13 are formed immediately behind the front end walls. Ring springs 6 that are pressed in the axial direction are fixed through attachment grooves 6-2 of the respective fixing plates A and B6-1 fixed to the center portion of the wall, and a pair of left and right is combined. Hold the connector body 1b As a result of configuring the small-diameter pipe connection connector substantially the same as in Example 3 and verifying the connection state of the pipe and verifying the locked state after connection, except for the above-described configuration, substantially the same result Was confirmed.

In the connector for small-diameter pipe connection in the first embodiment, the rear opening portion including the flange portion 1-1 of the connector main body 1 and the thin-diameter pipe insertion portion extending from the rear outer engagement wall 1-4 to the rear wall portion. 26, a protective cap 7 made of an elastic member serving also as a dustproof cap is attached. The protective cap is formed of various rubbers or a material selected from synthetic resins such as PA, PP, POM, and fluorine resin, and its specific structure is formed on the outer peripheral portion of the connector body 1 as shown in FIGS. The flange portion 7-2 has a conforming shape and is attached to the flange portion 1-1 of the connector main body 1, the detachable grip portion 7-1 provided at the rear of the flange portion, and the rear thereof. The outer peripheral portion 7-3 formed in a shape according to the connector main body outer engagement wall 1-4, the vertical rear end portion 7-4 connected to the outer peripheral portion 7-3, and the inner peripheral portion 7- wound around the outer peripheral portion of the small-diameter pipe It consists of five. As shown in FIG. 27, the protective cap 7 in this example is wound around the spool portion P-1 of the small-diameter pipe P in advance and covers the rear opening portion simultaneously with the connection of the small-diameter pipe P to the connector body 1. This completely prevents dust from entering the system and effectively protects each member assembled to the rear of the connector body 1 from impacts such as contact. Further, the protective cap 7 according to this example has a convex portion 7-6 connected to the rear wall portion 7-4 in a shape conforming to the connector main body inner engagement wall 1-5, and an inner peripheral portion 7-5 inside thereof. Since it is formed flush with the outer peripheral portion of the small-diameter pipe P, it functions as a guide for maintaining the parallel state of the small-diameter pipe P with respect to the axial center of the connector main body 1, and as a result, the core run-out of the small-diameter pipe P It has also been confirmed that wear of the seal ring 5 and the like due to the above is prevented.
[Examples 6 to 8]

Although not shown, the small-diameter pipe connector is configured in the same manner as in the fifth embodiment except that the protective cap 7 in the fifth embodiment is attached to the small-diameter pipe connector in the second and fourth embodiments. As a result, almost the same results as in Example 5 were confirmed.
[Examples 9 to 16]

In the connector for small diameter pipe connection in each of the above embodiments, instead of the small diameter pipe P that is inserted into the inner diameter portion 1-3 or 1a-3 of the connector main body 1 or 1a and connected to the mating part, FIG. As shown in Figs. 29 and 29, in the present example, a separate projection P-7 separately produced is brazed at a symmetrical position across the axis of the rear outer peripheral portion of the spool portion Pa-1 formed at the terminal in this example. The small-diameter pipe Pa joined as a unit is prepared, and the convex portion P-7 of the small-diameter pipe Pa is fitted into the backup sleeve guide groove 1-6 or 1a-6 of the connector body 1 or 1a. Thus, a small-diameter pipe connection connector was configured as a detent for the thin-diameter pipe Pa with respect to the connector body 1 or 1a. The convex portion P-7 according to the present embodiment is fitted in the backup sleeve guide groove 1-6 or 1a-6 of the connector body 1 or 1a at the rear of the spool portion Pa-1 of the small-diameter pipe Pa. It was confirmed that it functioned satisfactorily as a detent for the connector main body 1 or 1a of the small-diameter pipe Pa, and other results were almost the same as those of the above-described embodiments. In addition, even when joining of the convex part P-7 of the separate body with respect to the said small diameter piping Pa was performed by welding instead of brazing, the result did not change.
[Examples 17 to 24]

In the connector for small diameter pipe connection in each of the above embodiments, instead of the small diameter pipe P that is inserted into the inner diameter portion 1-3 or 1a-3 of the connector body 1 or 1a and connected to the mating part, FIG. As shown in FIG. 2, the small diameter pipe Pb that is inserted into the inner diameter portion of the connector main body and connected to the mating part has a small diameter only having a stepped portion Pb-5 in the vicinity of the pipe end portion Pb-2 of the terminal. The pipe Pb is adopted, and a separate substantially cylindrical auxiliary tool P-8, in which a convex portion Pb-7 is provided symmetrically with the shaft core behind the spool portion Pb-1 and the spool portion Pb-1, is provided. The substantially cylindrical auxiliary tool P-8 is prepared and fixed to a predetermined position at the end of the small-diameter pipe Pb by brazing in this example, and the small-diameter pipe spool portion Pb-1 and the small-diameter pipe Pb are fixed. Example 9 except that the connector body is not rotated. 16 and in analogy to constitute a small-diameter pipe connector. The auxiliary tool P-8 according to this embodiment functions in the same manner as the spool portion P-1 or Pa-1 in each of the above embodiments at the end of the small-diameter pipe Pb, and is behind the convex portion Pb of this example. -7 is fitted in the backup sleeve guide groove 1-6 or 1a-6 of the connector main body 1 or 1a as in Examples 9 to 16, and the circumference of the small-diameter pipe Pb relative to the connector main body 1 or 1a It was confirmed that it functions sufficiently as a stop, and the other results are almost the same as those of the above-described embodiments. Even when the separate auxiliary tool P-8 was fixed to the small-diameter pipe Pb by caulking or welding instead of brazing, there was no particular change in the results.

    As is clear from the above embodiment, the connector for connecting a small-diameter pipe according to the present invention is such that the connection confirmation and lock member comes into contact with the right and left of the outer peripheral portion of the small-diameter pipe behind the thin-diameter pipe spool portion. By assembling the main body together, a strong connection state that can sufficiently oppose a large pulling force applied to the small-diameter pipe due to an increase in pressure or an external force is stably secured. In addition, the connection and the confirmation of the appropriateness of the connection should be performed easily and simply with a simple operation with a slight force to pinch the push plate of the connection / locking member with the fingers from the left and right. Can do. Further, the connector body according to the present invention is formed by forming, in parallel with the outer peripheral cylindrical part of the inner diameter part that houses the seal ring and the backup sleeve, a male screw that is screwed into the female screw of the mating part. Has been greatly shortened, making it easy to connect small-diameter pipes in a narrow working space, and at the same time being able to sufficiently cope with a load perpendicular to the connector body in the longitudinal direction. In addition, the female screw of the mating part to be screwed with the connector main body and the mounting hole including the first and second engaging walls need only be processed shallower than before, so that the processing cost can be greatly reduced. Can do. Furthermore, the structure of the connector main body and accompanying members is simplified, and its production means can be mass-produced by injection molding, forging, etc. in addition to normal cutting, and a significant reduction in manufacturing cost can be expected. In addition, the action of the elastic protective cap that covers and integrally covers the rear opening including the flange portion of the connector main body reduces external force such as impact on the connector main body, thereby preventing damage to the connector and protecting it. Since the convex part formed continuously to the rear wall part of the cap is shaped according to the connector body inner engagement wall, the inner peripheral part on the inner side is formed flush with the outer peripheral part of the small-diameter pipe, It functions as a guide for maintaining the parallel state of the small-diameter pipe P with respect to the shaft core of the connector body 1, and as a result, wear of the seal ring and the like due to the runout of the small-diameter pipe P is prevented in advance. The dust-proofing effect cleans the system and keeps its airtightness stable. Therefore, it can be expected to be effectively used in a wide range of applications as a pressure-resistant type small diameter pipe connection connector.

The 2nd figure which shows the pipe connection state of one Example of the small diameter pipe connection connector by this invention, and sectional drawing of the specific site | part in the same figure (a), (a) is the partially notched longitudinal side view, (B) is a rear view thereof, (c) is a cross-sectional view taken along line AA in FIG. (A), (d) is a cross-sectional view taken along line BB, and (e) is a cross-sectional view taken along line CC. . The 2nd figure which shows the state of each member which accompanies the connector main body before the pipe connection of the Example, and sectional drawing of the specific site | part in the figure (a), (a) is the longitudinal side view, (b) is The rear view, (c) is a sectional view taken along the line DD in FIG. (A), (d) the sectional view taken along the line EE, and (e) is the sectional view taken along the line FF. In the same Example, it is a 2nd page figure for demonstrating the state in the middle of small diameter piping connection, and sectional drawing of the specific site | part in the same figure (a), (a) is the partially notched longitudinal side view, (b) Is a rear view thereof, (c) is a cross-sectional view taken along the line GG in FIG. (A), (d) is a cross-sectional view taken along the line H-H, and (e) is a cross-sectional view taken along the line II. It is a 2nd page figure which shows the single-piece | unit of the connector main body for small diameter piping connection of the Example, (a) is a partially vertical side view, (b) is the rear view. FIG. 4 is a four-sided view showing a backup sleeve alone incorporated in the embodiment, in which (a) is a longitudinal side view, (b) is a 90-degree longitudinal side view, (c) is a rear view, and (d) is ( It is a principal part enlarged rear view in c). It is a 2nd page figure which shows a pair of connection confirmation and locking member integrated in the Example, (a) is the side view, (b) is the arrow sectional drawing of the center part in the same figure (a). Of the pair of connection confirmation and lock members incorporated in the embodiment, FIG. 3 is a three-side view of one connection confirmation and lock member, (a) is a side view thereof, (b) is a front view thereof, and (c) is FIG. Of the pair of connection confirmation and lock members incorporated in the same embodiment, the other connection confirmation and lock member is a three-side view, (a) is a side view thereof, (b) is a rear view thereof, and (c) is It is a top view. It is a partially broken side view of the thin diameter piping terminal incorporated in the same Example. The 2nd figure (equivalent to FIG. 1) which shows the pipe connection state in the other Example for the small diameter pipe connection connectors based on this invention, and sectional drawing of the specific site | part in the same figure (a), (a) is the (B) is a rear view thereof, (c) is a cross-sectional view taken along the line JJ in (a), (d) is a cross-sectional view taken along the line KK, and (e) is the same. It is LL sectional view. The 2nd figure (equivalent to FIG. 2) which shows the state of the connector main body before pipe connection of the Example and the state of each member accompanying, and sectional drawing of the specific site | part in the figure (a), (a) is the vertical side surface (B) is a rear view thereof, (c) is a cross-sectional view taken along line MM in FIG. (A), (d) is a cross-sectional view taken along line NN, and (e) is a cross-sectional view taken along line OO. is there. It is a 2nd page figure (equivalent to FIG. 6) which shows a pair of connection confirmation and locking member integrated in the Example, (a) is the side view, (b) is the arrow cross section of the center part in the same figure (a) FIG. Of the pair of connection confirmation and lock members incorporated in the embodiment, one of the connection confirmation and lock members is a three-side view (corresponding to FIG. 7), (a) is a side view thereof, and (b) is a front view thereof. (C) is a cross-sectional plan view thereof. Of the pair of connection confirmation and lock members incorporated in the embodiment, the other connection confirmation and lock member is a three-side view (corresponding to FIG. 8), (a) is a side view thereof, and (b) is a rear view thereof. (C) is a plan view thereof. FIG. 2 is a two-side view (corresponding to FIGS. 1 and 10) showing a pipe connection state of still another embodiment in the small-diameter pipe connection connector according to the present invention, and a cross-sectional view of a specific part in FIG. ) Is a partially cutaway longitudinal side view, (b) is a rear view thereof, and (c) is a cross-sectional view taken along line P-P in FIG. The 2nd figure (equivalent to FIG. 2 and 11) which shows the state of each member which accompanies the connector main body before the piping connection of the Example, and sectional drawing of the specific site | part in the same figure (a), (a) is the A longitudinal side view, (b) is a rear view thereof, and (c) is a cross-sectional view taken along the line Q-Q in FIG. In the same Example, it is a 2nd figure (equivalent to FIG. 3) for demonstrating the state in the middle of small diameter piping connection, and sectional drawing of the specific site | part in the figure (a), (a) is the partially notched longitudinal section A side view, (b) is the back view, (c) is the RR sectional view taken on the line in (a). It is the 2nd page figure (equivalent to FIG. 4) which shows the single-piece | unit of the connector main body for small diameter piping of the Example, (a) is a partially vertical side view, (b) is the back view. FIG. 4 is a four-side view (corresponding to FIG. 5) showing a backup sleeve alone incorporated in the embodiment, in which (a) is a vertical side view thereof, (b) is a 90-degree rotation vertical side view of FIG. ) Is a rear view of FIG. 4A, and FIG. 4D is a cross-sectional view taken along the line II in FIG. Among the pair of connection confirmation and lock members incorporated in the same embodiment, in the three views of one connection confirmation and lock member and the two views of the other connection confirmation and lock member (corresponding to FIGS. 6 and 12), (A) is a side view of one connection confirmation and lock member, (b) is a plan view thereof, (c) is a side view of the other connection confirmation and lock member, and (d) is a side view of the other connection confirmation and lock member. The plan view, (e) is a cross-sectional view of the central portion in FIGS. (A), (c). FIG. 2 is a two-side view (corresponding to FIGS. 1, 10 and 15) showing a pipe connection state of still another embodiment in the small-diameter pipe connection connector according to the present invention, and a cross-sectional view of a specific part in FIG. (A) is a partially cut-away vertical side view, (b) is a rear view thereof, and (c) is a cross-sectional view taken along line SS in FIG. FIG. 2 is a two-view drawing (corresponding to FIGS. 2, 11 and 16) showing the state of each member associated with the connector main body before pipe connection in the same embodiment, and a sectional view of a specific part in FIG. Is a longitudinal side view thereof, (b) is a rear view thereof, and (c) is a sectional view taken along line TT in FIG. In the same Example, it is the 2nd figure (equivalent to FIG. 3 and 17) for demonstrating the state in the middle of small diameter piping connection, and sectional drawing of the specific site | part in the same figure (a), (a) is the partially cut off FIG. 3 is a cutaway side view, (b) is a rear view thereof, and (c) is a cross-sectional view taken along the line U-U in FIG. It is a 2nd page figure (equivalent to FIG. 4 and 18) which shows the single-piece | unit of the connector main body for small diameter piping connection of the Example, (a) is a partially vertical side view, (b) is the rear view. FIG. 3 is a three-side view (corresponding to FIGS. 6, 12, and 20) of the connection confirmation / locking member incorporated in the embodiment, (a) is a side view thereof, and (b) is a front view in the direction of the arrow in FIG. FIG. 4C is a partially cross-sectional plan view thereof. FIG. 6 is a two-side view (corresponding to FIGS. 1, 10, 15 and 21) showing a pipe connection state of still another embodiment of the small-diameter pipe connection connector according to the present invention, in which (a) is a partially cutaway vertical side view. FIG. 2B is a rear view thereof. It is a partially broken side view (equivalent to FIG. 9) of the thin diameter piping terminal integrated in the Example. FIG. 9 is a two-side view (corresponding to FIGS. 1, 10, 15, 21 and 26) showing a pipe connection state of still another embodiment of the small diameter pipe connection connector according to the present invention. A longitudinal side view, (b) is a rear view thereof. It is a 2nd page figure (equivalent to FIG. 9 and 27) which shows the small diameter piping terminal integrated in the Example, (a) is the partially broken side view, (b) is the back view. It is a 2nd page figure (equivalent to FIG. 9, 27 and 29) which shows the other Example of the thin diameter piping terminal integrated in the Example, (a) is the partially broken side view, (b) is the back view. It is. It is a longitudinal direction half-mounting vertical side view which shows the thin diameter pipe connection state (equivalent to FIG. 1) of the small diameter pipe connection connector of a prior art example. A thin pipe connection state using a conventional quick connector (corresponding to FIG. 1) is shown, (a) is a longitudinal half-mounted longitudinal side view, and (b) is a confirmation member incorporated therein. The thin pipe connection state (equivalent to FIG. 1) of the connector for thin pipe connection of another conventional example is shown, (a) A partially cutaway vertical sectional side view, and (b) a rear view thereof.

Explanation of symbols

1, 1a, 1b Connector body 1-1, 1a-1, 1b-1 Flange part 1-2, 1a-2, 1b-2 Male thread 1-3, 1a-3, 1b-3 Inner diameter part 1-4, 1a-4, 1b-4 Outer engagement wall 1-5, 1a-5, 1b-5 Inner engagement wall 1-6, 1a-6, 1b-6 Groove for backup sleeve guide 1-7 Connection confirmation and lock member Guide groove 1a-8 Connection confirmation claw 1a-9 Hook 1a-10, 1b-10 Notch window 2, 2a Backup sleeve 2-1, 2a-1 Cylindrical portion 2-2 Hook receiving groove 2-3, 2a-3 Rear end outer peripheral convex part 2-4 Notch part 2-5, 2a-5 Spool receiving wall 2-6, 2a-6 Through hole 2-7, 2a-7 Step part 2-8, 2a-8 Small diameter part 2- 9, 2a-9 Tip small diameter part 2-10, 2a-10 Large diameter part 2-11 Guide part 2a-12 End confirmation and locking member abutment recesses 3, 3a, 3b, 3c connect confirmation and locking member 3-1,3a-1 holding plate A
3-2, 3a-2 Presser plate B
3-3, 3a-3 Connection confirmation claw A
3-14, 3a-14 Connection confirmation claw B
3-4, 3a-4 Front hook 3-5, 3a-5 Rear hook 3-6, 3a-6 Tapered wall 3-7, 3a-7 Hook receiving recess 3-8, 3a-8 Rear wall A
3-9, 3a-9 Rear wall B
3-10, 3a-10 Tip A
3-11, 3a-11 Tip B
3-12, 3a-12 Abutting wall A
3-13, 3a-13 Abutting wall B
3-14 Connection confirmation claw B
3a-15 Intermediate hook 3b-16 Side wall A
3b-17 Side wall B
3b-18 Front recess A
3b-19 Rear recess A
3b-20 Front recess B
3b-21 Rear recess B
3b-22 Tapered wall A
3b-23 Tapered wall B
3b-24 Tip wall A
3b-25 Tip wall B
3b-26 Rear wall A
3b-27 Rear wall B
3b-28 Abutting wall A
3b-29 Abutting wall B
3c-12 Rear wall A
3c-13 Rear wall B
3c-16 Presser plate A
3c-17 Presser plate B
3c-24 Tip wall A
3c-25 Tip wall B
3c-28 Abutting wall A
3c-29 Abutting wall B
4 Counterpart 4-1 Flow path 4-2 First engagement wall 4-3 Second engagement wall 4-4 Female thread 5 Seal ring 6 Ring-shaped spring 6-1 Fixing plate 6-2 Mounting groove 7 Protective cap 7 -1 Gripping part 7-2 Flange part 7-3 Outer peripheral part 7-4 Rear wall part 7-5 Inner peripheral part 7-6 Convex part P, Pa, Pb Small diameter pipe P-1, Pa-1, Pb-1 Spool part P-2, Pa-2, Pb-2 Pipe end part P-3, Pa-3, Pb-3 Front wall part P-4, Pa-4, Pb-4 Rear wall part P-5, Pa- 5, Pb-5 Step part P-6, Pa-6, Pb-6 Small diameter part P-7, Pb-7 Convex part P-8 Auxiliary tool Pb-9 Mounting step part

Claims (24)

  On the mating part side, it is formed so that it can be connected to an attaching / detaching tool on the inner peripheral part on the opposite side of the mating part connected to the inner diameter part, and the inner diameter part that includes the seal ring and the backup sleeve fitted to the small diameter pipe. An inner engagement wall is formed through the inner engagement wall, and a backup sleeve guide groove is formed in parallel with the shaft core. The flange portion comes into contact with the mating part corresponding to the approximate center of the outer peripheral portion, and the mating partner is connected to the flange portion. On the component side cylindrical portion, a male screw is formed to be screwed into a female screw of a mating component, and on the side opposite to the mating component of the flange portion, an engagement wall that can be coupled to a detachable tool is formed, A connector main body having a connection confirmation and locking member guide groove formed through the engagement wall; a ring-shaped seal ring pre-installed at the tip of the inner diameter portion of the connector main body; and a mating component of the seal ring In the inner diameter part on the opposite side, A substantially cylindrical body that is inserted and inserted through a groove for guide-up sleeve guide, and has a through-hole through which a small-diameter pipe is inserted into the shaft core, and a small-diameter is formed at the rear end of the through-hole. A pipe spool receiving wall is provided, a small-diameter part separated by a step is formed on the inner peripheral part on the counterpart part side, and a connection check perpendicular to the axial direction is made on the opposite side of the outer part to the counterpart part A hook receiving groove for the connection confirmation claw of the cum lock member is formed, and a back-up sleeve in which a convex portion corresponding to the back-up sleeve guide groove of the connector main body is formed at the rear end of the outer peripheral portion; A pair of connection confirmation / locking members assembled via a connection confirmation / locking member guide groove formed on the mating wall, wherein one connection confirmation / locking member has a front hook and a rear hook respectively. Contact A confirmation claw and a presser plate having an abutting wall that is in contact with the outer peripheral portion of the small-diameter pipe are formed integrally with each other in the axial direction, and the other connection confirmation and lock member has A pair of connection confirmation claws each having a hook receiving recess for storing the front hook before connecting the small-diameter pipe, and a holding plate having an abutting wall that contacts the outer peripheral portion of the thin-diameter pipe on the side surface A connection confirmation and lock member that is integrally formed relative to the axial direction and assembled together so as to sandwich the connector body, and is housed in the spool receiving wall of the backup sleeve at the terminal. A spool portion is formed, and a small-diameter portion separated by a step portion is formed on the outer peripheral surface of the pipe end portion on the spool-part mating component side. The seal ring is disposed on the small-diameter portion, and the spool-part counterpart including the step portion The outer peripheral surface on the component side A connector for connecting a small-diameter pipe, characterized by comprising a thin-diameter pipe with a backup sleeve fitted outside.   In the connection confirmation / locking member, one connection confirmation / locking member includes a pair of connection confirmation claws each having an intermediate hook in addition to the front hook and the rear hook, and the shaft core is thin on the shaft. A pair of holding plates having abutting walls that come into contact with the outer peripheral portion of the diameter pipe are formed in a pair relative to each other in the axial direction. The other connection confirmation and lock member includes the front hook before the small diameter pipe is connected. A pair of connection confirmation claws each having a hook receiving recess for storing a holding plate, and a holding plate having an abutting wall that abuts the outer peripheral portion of the small-diameter pipe on the side of the shaft, relative to each other in the axial direction. The small diameter pipe connection connector according to claim 1, wherein the connector is formed so as to be integrated and assembled together so as to sandwich the connector main body.   In the one connection confirmation / locking member, a tapered wall inclined in the axial direction is provided at a side end of a rear hook provided in each of the pair of connection confirmation claws opposed in the axial direction. The connector for thin-diameter pipe connection according to claim 1 or 2.   A small notch portion is provided in the hook receiving groove of the connection confirmation claw of the connection confirmation and lock member formed on the outer peripheral portion of the backup sleeve opposite to the counterpart part, and the rear side of the connection confirmation claw is provided in the notch portion. 4. The small-diameter pipe connection according to claim 1, wherein sliding of the backup sleeve in the longitudinal direction before connecting the thin-diameter pipe is controlled by assembling the front and rear of the hook. connector.   5. A thin pipe spool receiving wall provided at a rear end portion of the through hole of the backup sleeve is formed to have a depth for accommodating a front wall portion of the thin pipe spool portion. The thin-diameter pipe connector according to any one of the above.   An inner engagement wall formed on the inner peripheral part of the connector body opposite to the counterpart part is formed in a nut shape that can be connected to a hexagon wrench, and formed on the outer peripheral part connected to the opposite side of the flange part on the opposite side. The small-diameter pipe connection according to any one of claims 1 to 5, wherein the outer engagement wall is formed in a polygonal nut shape that can be connected to a spanner that is a detachable tool. Connector. The ring-shaped seal ring and a substantially cylindrical backup sleeve is pre-decorated on the inside diameter portion of the connector body, each of the various rubbers, or PA, POM, to be formed by a fluorine-based resins or et material selected The small diameter pipe connection connector according to any one of claims 1 to 6.   On the mating part side, it is formed so that it can be connected to an attaching / detaching tool on the inner peripheral part on the opposite side of the mating part connected to the inner diameter part, and the inner diameter part that includes the seal ring and the backup sleeve fitted to the small diameter pipe. An inner engagement wall is formed through the inner engagement wall, and a backup sleeve guide groove is formed in parallel with the shaft core. The flange portion comes into contact with the mating part corresponding to the approximate center of the outer peripheral portion, and the mating partner is connected to the flange portion. On the component side cylindrical portion, a male screw is formed to be screwed into a female screw of a mating component, and on the side opposite to the mating component of the flange portion, an engagement wall that can be coupled to a detachable tool is formed, A notch window that also serves as a connection confirmation and locking member guide groove is formed through the engagement wall, and a pair of connection confirmation claws provided with hooks facing the axial direction at the ends on both sides of the notch window, A connector body formed as a unit, and the connector A ring-shaped seal ring that is preliminarily installed at the tip of the inner diameter portion of the main body, and an inner shape that is inserted and inserted into the inner diameter portion on the opposite side of the seal ring from the mating part via the backup sleeve guide groove. A through-hole for inserting a small-diameter pipe into the shaft core is penetrated, and a thin-diameter pipe spool receiving wall is provided at the rear end of the through-hole. A small-diameter portion separated by a step portion is formed on the portion, and a receiving recess is formed on the side surface of the outer peripheral portion opposite to the mating part so that the front end wall of the opposing connection confirmation and lock member abuts. A backup sleeve formed with a protrusion corresponding to the backup sleeve guide groove of the connector body at the end, and a notch window also serving as a connection confirmation and lock member guide groove formed on the outer engagement wall of the connector body Inserted A pair of connection confirmation / locking members, each connection confirmation / locking member having a substantially semicircular abutting wall that abuts the outer peripheral portion of the small-diameter pipe on the other component side axial center of the side wall, Tip walls facing each other perpendicularly are formed on the mating part side of the side wall excluding the abutting wall, and a front recess and a rear recess for accommodating the hooks of the connector main body are formed in the symmetrical positions. A vertical rear wall is formed on the side opposite to the mating part connected to the rear recess, and a connection confirmation / locking member for holding the connector body together as a pair, and receiving the spool of the backup sleeve at the terminal A spool portion housed in the wall is formed, and a small diameter portion separated by a step portion is formed on the outer peripheral surface of the pipe end portion on the counterpart part side of the spool portion, and the seal ring is placed on the small diameter portion, and the step portion Including spool part A connector for connecting a small-diameter pipe, comprising: a small-diameter pipe in which the backup sleeve is externally fitted to the outer peripheral surface of the mating part.   In the pair of connection confirmation and lock members, the hooks of the connector main body are housed in the respective front hook receiving recesses before the small-diameter pipe is connected, and the tip wall thereof is in contact with the receiving recess of the backup sleeve. The back-up sleeve is controlled to slide in the longitudinal direction, and after the small-diameter pipe is connected, the back-up sleeve moves over the connection confirmation / locking member and moves to the mating part side, and the connection confirmation / locking member moves in the axial direction. Proceeding, abutting the mutual abutting wall against the outer periphery of the small-diameter pipe on the side opposite to the rear wall part mating part of the small-diameter pipe spool part, and simultaneously abutting the respective tip walls, the hook of the connector body is Move from the front concave portion to the rear concave portion and be accommodated, formed integrally with each other in the axial direction, and assembled together so as to hold the connector body as a pair. Diameter pipe connector according to claim 8, wherein.   10. The small diameter pipe according to claim 8, wherein in each of the pair of connection confirmation and lock members, each front hook receiving recess is provided with a tapered wall inclined to the opposite side to the outer counterpart part. Connector for connection.   The small diameter pipe spool receiving wall provided at the rear end portion of the through hole of the backup sleeve is formed to a depth that accommodates all of the spool portion including the front wall portion and the rear wall portion of the small diameter pipe spool portion. The small diameter pipe connection connector according to any one of claims 8 to 10.   An inner engagement wall formed on the inner peripheral part of the connector body opposite to the counterpart part is formed in a nut shape that can be connected to a hexagon wrench, and formed on the outer peripheral part connected to the opposite side of the flange part on the opposite side. The small-diameter pipe connection according to any one of claims 8 to 11, wherein the outer engaging wall is formed in a polygonal nut shape that can be connected to a spanner that is a detachable tool. Connector. The ring-shaped seal ring and a substantially cylindrical backup sleeve is pre-decorated on the inside diameter portion of the connector body, each of the various rubbers, or PA, POM, to be formed by a fluorine-based resins or et material selected The small diameter pipe connection connector according to any one of claims 8 to 12.   On the mating part side, it is formed so that it can be connected to an attaching / detaching tool on the inner peripheral part on the opposite side of the mating part connected to the inner diameter part, and the inner diameter part that includes the seal ring and the backup sleeve fitted to the small diameter pipe. An inner engagement wall is formed through the inner engagement wall, and a backup sleeve guide groove is formed in parallel with the shaft core. The flange portion comes into contact with the mating part corresponding to the approximate center of the outer peripheral portion, and the mating partner is connected to the flange portion. On the component side cylindrical portion, a male screw is formed to be screwed into a female screw of a mating component, and on the side opposite to the mating component of the flange portion, an engagement wall that can be coupled to a detachable tool is formed, A connector main body formed with a notch window for confirming connection and inserting a locking member through the engagement wall; a ring-shaped seal ring preliminarily installed at the tip of the inner diameter portion of the connector main body; and the seal ring Inner diameter part opposite to the mating part A substantially cylindrical body that is inserted through the backup sleeve guide groove and is internally provided, and has a through-hole through which a small-diameter pipe is inserted into the shaft core, and a thin hole is formed at the rear end of the through-hole. Diameter pipe spool receiving wall is provided, a small diameter part is formed in the inner peripheral part on the counterpart part side and separated by a step part, and the opposite connection confirmation and lock member on the side opposite to the counterpart part in the outer peripheral part A back-up sleeve in which a convex portion corresponding to a back-up sleeve guide groove of the connector main body is formed at the rear end of the outer peripheral portion, and a connector main body outer engagement wall. A pair of connection confirmation / locking members inserted into the formed connection confirmation / locking member cut-out window, each connection confirmation / locking member having a specific thickness on the counterpart component side On the shaft core, It has a substantially semicircular abutting wall that abuts the outer periphery of the diameter pipe, and the other end of the presser plate excluding the abutting wall is formed with a tip wall that faces each other vertically, opposite to the mating part A vertical rear wall is formed on the side, and a ring-shaped spring that presses in the axial direction through each fixing plate is fixed to the center of the rear wall. A confirmation and lock member and a spool portion that is housed in the spool receiving wall of the backup sleeve are formed at the terminal, and a small diameter portion that is separated by a step portion is formed on the outer peripheral surface of the pipe end portion on the mating part side of the spool portion. A small-diameter pipe connection connector comprising: the seal ring in the small-diameter portion; and a small-diameter pipe in which the backup sleeve is externally fitted on the outer peripheral surface of the spool part including the stepped portion. .   In the pair of connection confirmation and lock members, the front end walls before connecting the small-diameter pipe contact the receiving recess of the backup sleeve to control the sliding of the backup sleeve in the longitudinal direction, and after the small-diameter pipe is connected The backup sleeve moves over the connection confirmation / locking member and moves to the mating part side, and the connection confirmation / locking member advances in the axial direction by the pressing of the ring-shaped spring, and the rear wall of the small-diameter pipe spool portion The abutting wall is opposed to the outer periphery of the small-diameter pipe on the opposite side of the mating part, and the abutting walls abut against each other at the same time. The small-diameter pipe connection connector according to claim 14, wherein the connector is assembled so as to sandwich the pin. The small diameter pipe spool receiving wall provided at the rear end portion of the through hole of the backup sleeve is formed to a depth that accommodates all of the spool portion including the front wall portion and the rear wall portion of the small diameter pipe spool portion. diameter pipe connector according to claim 14 or 15 characterized Rukoto.   An inner engagement wall formed on the inner peripheral part of the connector body opposite to the counterpart part is formed in a nut shape that can be connected to a hexagon wrench, and formed on the outer peripheral part connected to the opposite side of the flange part on the opposite side. The small-diameter pipe connection according to any one of claims 14 to 16, wherein the outer engagement wall is formed in a polygonal nut shape that can be connected to a spanner that is a detachable tool. Connector. The ring-shaped seal ring and a substantially cylindrical backup sleeve is pre-decorated on the inside diameter portion of the connector body, each of the various rubbers, or PA, POM, to be formed by a fluorine-based resins or et material selected The small-diameter pipe connection connector according to any one of claims 14 to 17, characterized in that:   An elastic dustproof cap is attached to the flange part of the connector body and the open part opposite to the mating part including the small diameter pipe insertion part extending from the outer engagement wall on the opposite side to the mating part to the rear wall part. The small-diameter pipe connection connector according to any one of claims 1 to 18. The elastic dustproof cap, various rubbers, or PA, POM, is molded of a material selected from fluorine based resins or al, has a shape conforming to the outer peripheral portion of the connector body, is applied to the connector body flange A flange portion, a grip portion provided on the opposite side of the flange component, a peripheral portion formed on the opposite side of the counterpart component in a shape corresponding to the connector body outer engagement wall, and a vertical portion connected thereto. The connector for small diameter piping according to claim 19, comprising a rear end portion and an inner peripheral portion wound around the outer peripheral portion of the small diameter pipe.   In the small diameter pipe connecting connector, the small diameter pipe that is inserted into the inner diameter portion of the connector main body and connected to the mating component is connected to the outer peripheral portion on the opposite side to the mating component of the spool portion formed at the terminal. A separate projection is provided symmetrically across the connector, and the projection is fitted into a backup sleeve guide groove of the connector body to prevent rotation of the small-diameter pipe with respect to the connector body. The connector for thin diameter piping connection of any one of Claims 1 thru | or 20.   The small-diameter pipe according to claim 21, wherein a separate convex part provided on an outer peripheral part opposite to a counterpart part of the spool part of the thin-diameter pipe is integrally joined by brazing or welding. Connector for connection.   In the small-diameter pipe connector, the end of the small-diameter pipe that is inserted into the inner diameter part of the connector main body and connected to the mating part sandwiches the shaft core on the opposite side of the spool part and the mating part. A separate substantially cylindrical auxiliary tool provided with a convex portion symmetrically is prepared, and the cylindrical auxiliary tool is fixed at a predetermined position in the small diameter pipe terminal, and the small diameter pipe spool portion and the connector of the small diameter pipe The small diameter pipe connection connector according to any one of claims 1 to 22, wherein the connector is a rotation stop with respect to the main body.   24. The connector for connecting a small diameter pipe according to claim 23, wherein the cylindrical auxiliary tool fixed at a predetermined position of the small diameter pipe is fixed integrally to the outer periphery of the small diameter pipe by caulking or brazing. .

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