JP5036278B2 - Corrugated tube connection device - Google Patents

Description

  In the present invention, a plurality of corrugated pipes are connected and connected to each other, a corrugated pipe and another pipe (heterogeneous pipe) are connected to each other, or the corrugated pipe is connected to a box or the like. The present invention relates to a corrugated pipe connecting device used for connecting corrugated pipes such as connecting to other instruments.

Conventionally, long tubular corrugated pipes having a corrugated cross section in the longitudinal direction are mutually connected, or such corrugated pipes are connected to dissimilar pipes such as electric pipes having the same circular cross section in the longitudinal direction. For this purpose, corrugated tube connection devices, also called connectors or couplings, are used. As this type of technology, for example, there is a technology described in Patent Document 1.
Japanese Utility Model Publication No.59-149419

  Patent Literature 1 discloses a connecting device for a conduit that includes a cylindrical receptacle through which a corrugated conduit is inserted and a connecting body. The connection body is provided with an attachment portion for attaching the connection body to the opening end of the receiving port. Moreover, the connection body has a notch, is formed in C shape, and is provided with the expansion function. Further, a pair of claws for hooking the outer wall of the conduit tube project from the inner surface of the connecting body. In this conduit connecting device, an inclined surface is formed in the attachment portion of the connecting body that extends outward in the radial direction toward the inner side of the receiving port and contacts the opening end of the receiving port. Specifically, as shown in FIG. 7, the technique described in Patent Document 1 is such that the claws of the coupling body are positioned on both sides in the radial direction of the inserted corrugated conduit so as to face each other. A pair is provided on the inner peripheral surface. Further, each nail has a substantially bow shape or a substantially crescent shape, and the pair of nails having such a shape is symmetrical with respect to an imaginary line (vertical axis) connecting the notch of the connection body and the center of the connection body, It is integrally formed in a certain angle range of the inner peripheral surface of the coupling body.

  In the technique described in Patent Document 1, after attaching a coupling body to the opening end of the receiving port, the corrugated conduit is inserted into the receiving port, and the claws of the coupling body are placed in the waves between the corrugated wires (valley part). Hook and lock and connect the corrugated conduit to the receptacle. At this time, the coupling body is expanded through the notch so that the claws do not interfere with the outer surface (mountain portion) of the corrugated conduit. In this case, in order to avoid interference between the claw and the outer surface of the corrugated conduit when the corrugated conduit is inserted into the coupling body, all the portions of the claw are located outside the outer surface of the corrugated conduit. It is necessary to sufficiently expand the connection body. Here, since the connection body basically expands centering on the circumferential center portion (site facing the notch), the expansion ratio between the pair of claws (in the direction from the circumferential center portion to the notch). The ratio at which the distance between the claws increases according to a certain amount of expansion of the locking tool) gradually increases from the circumferential central portion side toward the notch side. Therefore, the near side part (notch side part) of the nail moves to a position outside the outer surface of the corrugated conduit even with a small expansion amount of the connecting body, but the back side part (circumferential center side part of the nail) ) In particular, in order to expand the connecting body until the rear side end is located outside the outer surface of the corrugated conduit, it is necessary to expand the connecting body considerably. However, if the connecting body is greatly expanded, a large load (load) is applied to the connecting body. Therefore, in order to prevent an adverse effect on the connecting body due to such a load, the connecting body is expanded when the corrugated tube is inserted or removed. It is desirable to make the opening amount as small as possible. On the other hand, in order to increase the engaging force of the corrugated conduit by hooking and engaging the claws of the coupling body, it is preferable to project the claws as large as possible inside the coupling body (increase the projection amount). However, when the amount of protrusion to the inside of the nail is increased, it is necessary to further increase the amount of expansion of the connecting body. Therefore, depending on the elasticity, strength, etc. of the coupling body, in order to reliably expand the coupling body by the required amount while avoiding an excessive load on the coupling body, the protrusion amount of the claw is increased to increase the engagement force. There are limits to doing it. In addition, the above points are the same also when expanding a connection body and removing a corrugated conduit from a connection body.

  Therefore, the present invention is arranged on the inner peripheral side of the locking tool for connecting the corrugated tube to the receiving port (corresponding to the conventional connecting body) even if the locking tool has a smaller expansion amount than the conventional one. Can be inserted into the locking projection (corresponding to a conventional claw) without interfering with the outer surface of the corrugated tube, and the engaging tool has a large load while increasing the engaging force of the corrugated tube. It is an object of the present invention to provide a corrugated pipe connecting device that can reliably prevent the occurrence of the problem.

  The corrugated tube connecting device according to claim 1 includes a corrugated tube receiving port to which the corrugated tube is inserted and connected. The receiving port includes a receiving port main body portion and a locking tool. The receptacle body has a cylindrical shape having an open end into which the end of the corrugated tube is inserted. Further, the locking tool has a circular shape corresponding to the opening end of the receptacle body portion, and is detachably attached to the opening end of the receptacle body portion to insert the end portion of the corrugated pipe. Allow. The locking device of the receiving port is formed by cutting out a part in the circumferential direction to form a cutout portion, and the interval between the cutout portions can be expanded and reduced by bending deformation due to its own elasticity so that it can be expanded and contracted freely. The Further, the locking tool has a locking projection protruding inward on the inner peripheral surface side thereof, and the diameter of the locking projection is reduced in a state where the corrugated tube is inserted, so that the locking projection is formed in the receiving body portion. It protrudes inward from the inner peripheral surface on the opening end side of the tube, and enters the concave portion on the outer surface of the corrugated tube. On the other hand, the locking tool is expanded in a state where the corrugated tube is inserted, thereby retracting the locking projection outward from the inner peripheral surface on the opening end side of the receiving port main body portion, thereby causing the corrugation. It is comprised so that it may detach | leave from the recessed part of the outer surface of a pipe | tube. The locking protrusion of the locking tool is formed at a portion excluding the side facing the notch and is formed to be biased toward the notch. The locking tool has a substantially annular cross section having the notch, and the range in which the locking protrusion is formed to be biased toward the notch is defined by the center of the locking tool and the center position in the width direction of the notch. Is defined as a first imaginary line, and an imaginary line orthogonal to the first imaginary line and passing through the center of the locking tool is a second virtual line, the inner circumference of the locking tool In the range from the second imaginary line on the side facing the notch to about 45 degrees to the position closest to the notch, or on the inner peripheral surface of the locking tool, the second imaginary line A range from an angular position slightly on the line or from the second imaginary line to the notch part side to a position closest to the notch part, or an angle range of about 90 degrees to about 135 degrees from the center position in the width direction of the notch part It is the range from the angle position of this to the said notch part nearest position.

  Here, the receiving port is usually a cylinder having an open end having a cross-sectional shape (slightly larger diameter circular cross-section, square cross-section, etc.) corresponding to the outer peripheral shape of the corrugated tube having a predetermined cross-section (circular cross-section, square cross-section, etc.). (Cylindrical shape, rectangular tube shape, etc.). For example, the receiving port may have a simple cylindrical shape (simple cylindrical shape or simple rectangular tube shape) having the same cross section in the longitudinal direction so as to connect two corrugated tubes of the same type to each other. Alternatively, the receptacle has a modified cross-section cylindrical shape in which one side in the longitudinal direction has a relatively small diameter cross section and the other side has a relatively large diameter cross section in order to connect two corrugated pipes having a different cross section. It is also possible to use (a modified cross-section cylindrical shape, a modified cross-section square tube shape). Alternatively, the receiving port has a relatively small-diameter cross section on one side in the longitudinal direction and a relatively large-diameter cross section (similar cross section) on the other side in order to connect two corrugated pipes having the same cross-section with different diameters to each other. It is also possible to adopt a cylindrical shape with a different diameter cross section (a cylindrical shape with a different diameter cross section, a rectangular tube shape with a different diameter cross section). Alternatively, the receiving port has a cylindrical shape (cylindrical shape, rectangular tube shape) having the opening end only at one longitudinal end (front end) and integrally connecting the other longitudinal end (base end) to a container such as a box. Etc.). That is, any conventionally known receiving port can be used as the receiving port.

  In addition, the circular shape of the locking tool is a circular shape corresponding to the outer peripheral shape of the opening end of the receiving port (and usually the outer peripheral shape of the corrugated tube to be attached), and can be detachably attached to the opening end of the receiving port. Anything is acceptable. For example, the locking tool can be a substantially annular shape (that is, a C-shaped annular shape) having a notch portion in a part in the circumferential direction. In addition to the annular ring having the notch part, the locking tool may be an elliptical ring having a notch part, a rectangular ring having a notch part, a rectangular ring such as a hexagonal ring, an octagonal ring, or the like, or may have a notch part. A rounded rounded annular shape (a square annular shape with a curved corner) may be used. In other words, the locking device has a circular shape corresponding to the outer peripheral shape of the opening end of the corrugated tube, and is detachably attached to the opening end of the receiving body, thereby allowing the end of the corrugated tube to be inserted. As long as it is possible, any circular shape can be adopted. As described above, any configuration can be employed as the circumferential shape of the locking tool and the structure for attaching the locking tool to the receiving port. Moreover, a locking tool is formed with materials, such as a synthetic resin which has predetermined elasticity, so that a required amount can be expanded via a notch part.

  Furthermore, the shape of the locking protrusion of the locking tool can be any shape as long as it enters the recess (valley) on the outer surface of the corrugated tube and locks the recess. For example, the locking protrusions may be provided continuously along the inner periphery of the locking tool, such as a substantially arcuate plate shape or a substantially crescent shaped plate shape, or a plurality or a plurality of rectangular pieces. It is good also as what is provided discontinuously (intermittently) along the inner periphery of a locking tool etc., such as the unevenness | corrugation which has arrange | positioned a plate-shaped body along the inner periphery of a locking tool at fixed intervals. The formation position (formation range) of the locking protrusion in the locking tool is a portion excluding the side (that is, the central portion in the circumferential direction) facing the notch portion on the inner periphery of the locking tool, and the notch Any part that is biased toward the side may be used. For example, the locking tool is a substantially annular shape (C-shaped ring), a virtual line connecting the center of the locking tool and the center position in the width direction of the notch is defined as a first virtual line, and the first virtual line It is assumed that a virtual line that is orthogonal and passes through the center of the locking tool is a second virtual line. At this time, the locking projection can be provided in an arc range of a constant angle extending from an angular position slightly entering the circumferential center portion side from the second imaginary line of the locking tool to a position closest to the notch. That is, one end in the length direction (arc direction) of the locking projection is arranged at an angular position slightly entering the circumferential center portion from the second imaginary line of the locking tool, and the other end is arranged in the vicinity of the notch. Can do. Alternatively, the locking protrusion is formed only on the notch portion side from the second imaginary line and is extended to the position closest to the notch portion without being arranged on the circumferential center portion side from the second imaginary line of the locking tool. It can be provided within a circular arc range of a constant angle. That is, one end in the length direction (arc direction) of the locking projection is arranged on the second imaginary line on the inner peripheral surface of the locking tool or at an angular position slightly entering the notch portion side from the second imaginary line, and the other end Can also be placed in the immediate vicinity of the notch. That is, as long as the locking projection is formed to be biased toward the notch portion except for a certain angular range on both sides of the circumferential central portion, the range from the position outside the certain angular range on both sides of the circumferential central portion to the notched portion Can be provided in any range. Further, the shape (planar shape and cross-sectional shape) of the locking projection can be any shape as long as it does not interfere with the outer surface of the corrugated tube with a small expansion amount of the locking tool. However, the portion of the locking projection that protrudes highest inward from the inner peripheral surface of the locking tool (maximum protruding height portion) is notched from the second imaginary line on the inner peripheral surface of the locking tool. It is preferable to set the planar shape so as to come to the position where it enters. In this way, when the locking tool is expanded, a larger expansion ratio (in the direction from the circumferential center to the notch, the distance between the locking protrusions increases according to the fixed expansion amount of the locking tool. The maximum protrusion of the locking projection can be arranged at a position on the side of the notch where the ratio can be obtained, and the amount of expansion of the locking tool required for insertion of the corrugated tube can be made smaller Can do.

The corrugated tube connecting device according to a second aspect includes a corrugated tube receiving port to which the corrugated tube is inserted and connected. The receiving port includes a receiving port main body portion and a locking tool. The receptacle body has a cylindrical shape having an open end into which the end of the corrugated tube is inserted. Further, the locking tool has a circular shape corresponding to the opening end of the receptacle body portion, and is detachably attached to the opening end of the receptacle body portion to insert the end portion of the corrugated pipe. Allow. The locking device of the receiving port is formed by cutting out a part in the circumferential direction to form a cutout portion, and the interval between the cutout portions can be expanded and reduced by bending deformation due to its own elasticity so that it can be expanded and contracted freely. The Further, the locking tool has a locking projection protruding inward on the inner peripheral surface side thereof, and the diameter of the locking projection is reduced in a state where the corrugated tube is inserted, so that the locking projection is formed in the receiving body portion. It protrudes inward from the inner peripheral surface on the opening end side of the tube, and enters the concave portion on the outer surface of the corrugated tube. On the other hand, the locking tool is expanded in a state where the corrugated tube is inserted, thereby retracting the locking projection outward from the inner peripheral surface on the opening end side of the receiving port main body portion, thereby causing the corrugation. It is comprised so that it may detach | leave from the recessed part of the outer surface of a pipe | tube. The locking protrusion of the locking tool is formed at a portion excluding the side facing the notch and is formed to be biased toward the notch. Further, when the locking protrusion of the locking tool divides the locking tool into two parts, a first half on the side of the notch and a second half on the side opposite to the notch, The protrusion gradually increases from the second half toward the first half, and is integrated with the inner peripheral surface of the locking device so as to have a maximum protrusion height in the first half. It consists of formed locking protrusions. The locking protrusion may have a maximum protruding height in the middle of the first half, or may have a maximum protruding height at the end of the first half or near the end. The locking tool has a substantially annular cross section having the notch, and the range in which the locking protrusion is formed to be biased toward the notch is defined by the center of the locking tool and the center position in the width direction of the notch. Is defined as a first imaginary line, and an imaginary line orthogonal to the first imaginary line and passing through the center of the locking tool is a second virtual line, the inner circumference of the locking tool In the first range from the angle position on the second imaginary line or slightly into the notch part side from the second imaginary line to the position closest to the notch part, or the inner peripheral surface of the locking tool , A range from the position closest to the notch to the angular position that is about 45 degrees on the side facing the notch from the second imaginary line , or about 90 to about 135 from the center in the width direction of the notch. the from the angular position in degrees angular range is a range of up to the notch nearest position It is in the range of.

  In the corrugated pipe connecting device according to claim 3, in the configuration of claim 2, the locking projection of the locking tool has a maximum protruding height in the middle of the first half, and the maximum protruding height portion. It consists of a locking ridge formed integrally on the inner peripheral surface of the locking tool so as to protrude gradually from the protrusion toward the notch.

  As the planar shape of the locking protrusion, for example, a substantially arcuate plate shape or a substantially crescent moon plate shape can be used. Alternatively, the locking ridges may have a plate shape in which these shapes are intermittently formed as saw blades or irregularities at regular intervals in the length direction (arc direction). Alternatively, the locking protrusion is a saw blade-shaped or zigzag-shaped protrusion whose inner peripheral edge has a substantially crescent plate shape or a substantially arcuate plate shape. It can also be a ridge. Alternatively, the locking protrusion is composed of a plurality or a plurality of protruding pieces provided discontinuously (intermittently), and the protruding height of the series of protruding pieces is gradually increased to the maximum protruding height, and then gradually. The shape can be reduced. Moreover, each protrusion piece in this case can be made into shapes, such as rectangular plate shape and triangular plate shape. Furthermore, in any of the above cases, the locking protrusion can be formed on the locking tool so that the maximum protruding height portion is located on the notch side. Further, the locking protrusion may be formed only on the first half side. In addition, when a latching protrusion is made into the substantially crescent-plate shape thru | or a substantially arcuate-plate shape, it can also form so that the center part along the length direction (arc direction) may become a maximum protrusion height part.

  In the corrugated pipe connecting device according to a fourth aspect, in the structure according to any one of the first to third aspects, an imaginary line connecting the center of the locking tool and the center in the width direction (the center position in the width direction) of the notch portion. When the first virtual line is a second virtual line that is perpendicular to the first virtual line and passes through the center of the locking tool, the locking projection is It is formed only on the notch portion side from the two imaginary lines.

  Note that “the center in the width direction of the notch” refers to a position where the cut surface becomes the center in the width direction in the state where the notch is close and in close contact. Therefore, in the state where the notches are separated from each other, “the center in the width direction of the notch” refers to the center position in the width direction of the space occupied by the notch (the space between the circumferential ends of the locking tool).

  In the corrugated pipe connecting device according to a fifth aspect, in the configuration according to any one of the first to third aspects, an imaginary line connecting the center of the locking tool and the center in the width direction (the center position in the width direction) of the notch is provided. When the first virtual line is a second virtual line that is perpendicular to the first virtual line and passes through the center of the locking tool, the locking projection is It is formed on both sides of the notch of the locking tool so as to be symmetric with respect to one imaginary line (center axis).

  In the corrugated pipe connecting device according to a sixth aspect, in the configuration according to any one of the first to third aspects, an imaginary line connecting the center of the locking tool and the center in the width direction (the center position in the width direction) of the notch portion. When the first virtual line is a second virtual line that is perpendicular to the first virtual line and passes through the center of the locking tool, the locking projection is It is formed only on one side with respect to one imaginary line (center axis) (relative to the notch).

  In the corrugated pipe connecting device according to a seventh aspect, in the configuration according to any one of the first to sixth aspects, the locking member forms a pair of attachment portions on both sides of the notch portion, and the pair of attachment portions By inserting and fastening a proximity tool made of a fastener into the part, the interval between the notches can be reduced against its own elasticity.

  In addition, an attachment part can be made into the boss-like attachment part integrally formed in the both ends (circumferential both front-end | tip parts) which face a notch part in a locking tool. Moreover, a proximity tool can be comprised from fasteners, such as a volt | bolt and a bis | screw (screw nail) which penetrate the said pair of attachment part and fasten both attachment parts.

  Further, when the locking tool is in a non-fastened state (free state) by the proximity tool, the locking tool is in a predetermined amount of expanded state (a state in which the notch is opened by a predetermined amount) due to its own elasticity. The part is closed, and finally, the cutout part is almost completely closed (the attachment part is brought into close contact). On the other hand, the locking tool has an inner diameter in the free state that is the outer diameter of the corrugated tube so that the corrugated tube can be inserted into the predetermined amount of the expanded state (that is, the expanded state in the free state). It can also be set slightly larger. Alternatively, the inner diameter in the free state is set to be slightly smaller than the outer diameter of the corrugated pipe so as to allow insertion of the corrugated pipe when the locking tool is further expanded a certain amount from the expanded state in the free state. You can also In any case, the locking tool includes a crest of the corrugated tube so that the entire inner peripheral edge including the inner peripheral edge of the locking projection surrounds the outer surface of the corrugated tube (the outer peripheral surface of the peak portion) with a gap. From the expanded diameter state (the state in which the notch is expanded and opened) that allows the corrugated tube to be inserted / extracted with an inner diameter larger than the outer diameter of the outer peripheral surface of the portion, the diameter of the expanded diameter state is reduced and the locking protrusion By entering the concave groove in the trough portion of the corrugated tube and fixing the corrugated tube in the longitudinal direction to make it impossible to move (a state in which the notch is substantially closely closed), the proximity tool The diameter can be freely adjusted.

  In addition, the proximity tool can be composed of a fastener (bolt, nut, screw, or the like) having a threaded portion. Correspondingly, the threaded portion of the proximal tool is inserted into the attachment portion of the locking tool. Or it can also comprise so that it may have a long hole-like insertion hole or screwing hole to screw. In this way, even when working in a narrow place, if the screw tip can be placed at any position of the elongated insertion hole when inserting or screwing the screw with a tool such as a screwdriver, the screw can be inserted and screwed in. Therefore, the screw mounting work becomes easy.

  The corrugated pipe connecting device according to claim 8 is the corrugated pipe connecting device according to any one of claims 1 to 7, wherein the locking member is at least a center in the circumferential direction facing the notch in a separated state with the notch open. When the gap between the inner peripheral edge of the portion and the cutout portion is a predetermined amount larger than the outer diameter of the opening end of the receptacle body portion, the circumference is fixed when attached to the opening end of the receptacle body portion. The predetermined amount can be moved in a direction connecting the inner peripheral edge of the central portion in the direction and the cutout portion. Therefore, by shifting the locking tool, the locking protrusion can be arranged at a non-projecting position where it does not protrude inward from the inner peripheral surface of the receiving port main body. Further, in the substantially close state in which the notch portion is closed, the locking tool reduces the gap with the outer peripheral surface of the receiving port main body portion so that the locking protrusion is connected to the inner peripheral surface of the receiving port main body portion. Arranged at the protruding position protruding inward from the surface.

  For example, in the separated state in which the notch portion is opened, at least the distance between the inner peripheral edge of the central portion in the circumferential direction and the notch portion is slightly larger than the outer diameter of the opening end of the receiving body portion. The initial shape (proximity tool, etc. resists its own elasticity so that it can be moved slightly in the direction connecting the inner peripheral edge of the central portion in the circumferential direction and the notch when attached to the open end of the receptacle body. Shape when not close to or separated from each other. In addition, if a locking tool lose | disappears the clearance gap between the outer peripheral surfaces of a receptacle main-body part in the substantially close state which closed the notch part, a locking tool will become immovable with respect to a receptacle main-body part. However, the locking tool does not necessarily need to be immovable with respect to the receiving port main body portion in the substantially close state, and may be configured to move up and down, left and right to some extent. In other words, the locking tool may be configured to reduce the gap between the outer peripheral surface of the receiving port main body portion in a substantially close state with the cutout portion closed.

  In the corrugated pipe connecting device according to claim 9, in the configuration of claim 7, the proximity tool includes a head, a neck projecting from the head (having a smaller diameter than the head), and the neck. A necked screw having a large diameter and a threaded portion extending coaxially from the neck. Further, one of the attachment portions of the locking tool has a composite hole formed by coaxially penetrating a screw hole and an insertion hole, and arranging the insertion hole on the outside and the insertion hole on the inside. And having the screw hole of the composite hole larger in diameter than the neck portion (diameter) of the proximity tool and smaller in diameter than the screw portion (diameter thereof), and the insertion hole being the proximity hole The hole is larger in diameter than the threaded part of the tool. Further, the other of the attachment portions of the locking tool is opposed to the composite hole of the one attachment portion, and has a screw hole smaller in diameter than the screw portion (the diameter thereof) of the proximity tool. The corrugated pipe connecting device is configured such that the threaded portion of the necked screw is screwed into the threaded hole of the one attaching portion, and the base end portion of the threaded portion is completely inserted into the insertion hole of the one attaching portion. And screwing the tip of the threaded portion into the threaded hole of the other mounting portion, and the screwing amount of the threaded portion of the neck screw into the threaded hole of the other mounting portion. By adjusting, the interval of the notch is increased or decreased against the elasticity of the locking tool and held at a constant interval, so that the amount of expansion of the locking tool can be held at a constant level.

  That is, a shoulder is formed between the thread (at the start position) and the neck at the starting position of the thread at the base end of the threaded portion of the neck screw, and the thread (shoulder) is connected to one of the screws. The shoulder portion (step portion) between the threaded hole and the insertion hole of the composite hole of the attachment portion is abutted and locked, and the return of the screw portion is prevented. On the other hand, since the tip of the threaded portion is screwed into the threaded hole of the other attachment portion, when the neck screw is rotated forward (rotated in the screwing direction, that is, rotated clockwise), the rotation Depending on the amount, the screwing amount of the tip of the screw portion in the screw hole of the other attachment portion increases, and conversely, the neck screw is rotated in the reverse direction (rotated in the screw retraction direction, that is, counterclockwise) ), The screwing amount of the tip of the threaded portion in the screwing hole of the other attachment portion decreases according to the amount of rotation.

  A corrugated pipe connecting device according to a tenth aspect is the structure according to any one of the first to ninth aspects, wherein the corrugated pipe connecting apparatus includes a plurality of the receiving ports and the locking tool corresponding to the plurality of receiving ports. For example, the corrugated tube connecting device according to claim 9 is provided with a receiving port at both ends of a straight tubular tube, a receiving port at both ends of an L-shaped tube, or a trifurcated tube. A mouthpiece can be provided at three ends of the body.

  A corrugated pipe connecting device according to an eleventh aspect of the present invention is the structure according to any one of the first to ninth aspects, further comprising a connection port for a pipe (heterogeneous pipe) having a structure different from that of the receiving port. For example, a corrugated pipe connecting device according to claim 10 is provided with a receiving port at one end of a straight tubular body, and a cylindrical tube (non-corrugated) electric conduit as a different kind pipe at the other end. It can be set as the structure provided with the connection port between different kinds which connects. In addition, as a connection port for different types of pipes, any configuration can be used as long as it is a connection port for pipes other than corrugated pipes. Such dissimilar tubes include ordinary non-wavy cylindrical tubes such as electric conduits, foamed resin-coated tubes having a circular cross section, etc., and different diameter adapters for connecting different diameter pipe materials to each other, thin steel A member equivalent to a pipe material, such as a heterogeneous pipe adapter or bush for connecting a different kind of pipe such as a conduit, can also be configured to be connected to the connection port for the different kind of pipe as a different kind of pipe.

  A corrugated pipe connecting device according to a twelfth aspect of the present invention is the corrugated pipe connecting device according to any one of the first to ninth aspects, wherein the receiving port protrudes outward and can accommodate a wiring device and a faucet joint. A container having a housing space is provided. Examples of the container include boxes connected via connectors (wiring boxes such as outlet boxes and switch boxes, various boxes such as branch boxes), and the like.

  The corrugated pipe connecting device according to claim 1 is an arrangement in which the engaging tool for connecting the corrugated pipe to the receiving port is disposed on the inner peripheral side of the engaging tool even when the expanding amount is smaller than that of the related art. The outer surface of the corrugated tube can be inserted without interfering with the outer surface of the corrugated tube, and it is possible to reliably prevent a large burden from being applied to the retainer while increasing the engaging force of the corrugated tube by the retainer. .

  The corrugated pipe connecting device according to claim 2 is an arrangement in which the locking tool for connecting the corrugated pipe to the receiving port is disposed on the inner peripheral side of the locking tool even if the locking tool has a smaller expansion amount than the conventional one. The outer surface of the corrugated tube can be inserted without interfering with the outer surface of the corrugated tube, and it is possible to reliably prevent a large burden from being applied to the retainer while increasing the engaging force of the corrugated tube by the retainer. . Further, in the corrugated pipe connecting device according to claim 2, in addition to this effect, the locking projection gradually protrudes from the second half to the first half on the inner peripheral surface of the locking tool. The protrusion protrudes with increasing height, and reaches the maximum protrusion height in the middle of the first half, so that the protrusion height of the locking protrusion increases with increasing distance from the circumferential central portion (the portion opposite to the notch) of the locking tool. Will gradually increase. Accordingly, since the distance (interval) between the both sides in the circumferential direction of the locking tool increases as the distance from the circumferential central portion (the part opposite to the notch) of the locking tool increases, the number of locking tools can be expanded less. Even in the amount, the portion where the protrusion height of the locking projection is large can be further separated from the outer surface of the corrugated tube. As a result, the locking tool can be inserted into the locking protrusion arranged on the inner peripheral side of the locking tool without interfering with the outer surface of the corrugated tube with a smaller amount of expansion of the locking tool. It is possible to reliably prevent a large burden from being applied to the locking tool while increasing the engaging force of the corrugated tube by the locking tool by increasing the protrusion height of the locking tool.

  In addition to the effect of the second aspect, the corrugated pipe connecting device according to the third aspect has a locking projection on the inner peripheral surface of the locking tool from the maximum protruding height part in the middle of the first half to the notch. The projecting height will gradually decrease. Therefore, the locking protrusion can be reliably detached from the outer surface of the corrugated tube even in the range near the notch with a small amount of expansion of the locking tool.

  The corrugated pipe connecting device according to a fourth aspect of the present invention has the effects of any one of the first to third aspects, and the corrugation is formed by forming the locking projection only on the notch portion side from the second imaginary line of the locking tool. In order to avoid interference with the outer surface of the attachment tube, a half portion on the circumferential center portion side of the locking device that requires a larger amount of expansion of the locking device (a portion in the circumferential center portion side than the second imaginary line) ) Does not have any locking projections. As a result, the locking tool can be inserted into the locking protrusion arranged on the inner peripheral side of the locking tool without interfering with the outer surface of the corrugated tube with a smaller amount of expansion of the locking tool. It is possible to reliably prevent a large burden from being applied to the locking tool while increasing the engaging force of the corrugated tube by the locking tool by increasing the protrusion height of the locking tool.

  The corrugated pipe connecting device according to a fifth aspect of the present invention has the effect of any one of the first to third aspects, and the both sides of the notch so that the locking projection is line-symmetrical about the first imaginary line of the locking tool. Therefore, the troughs of the corrugated tube are symmetrically locked with the same locking force. Therefore, the corrugated tube can be locked more smoothly and reliably by the locking projection of the locking tool.

  The corrugated pipe connecting device according to claim 6 has the effect of any one of claims 1 to 3, and the locking projection is formed only on one side with the first imaginary line of the locking tool as the center. With a smaller amount of expansion of the locking tool, it can be inserted into the locking protrusion arranged on the inner peripheral side of the locking tool without causing the outer surface of the corrugated tube to interfere. In addition, by increasing the protrusion amount of the locking protrusion as a whole, the locking force against the corrugated tube can be increased. On the other hand, even if the protrusion amount of the locking protrusion is increased as a whole, the locking protrusion Is formed only on one side of the notch portion of the locking tool, it is not necessary to increase the amount of expansion of the locking tool when the corrugated tube is inserted.

  The corrugated pipe connecting device according to a seventh aspect of the present invention has the effect of any one of the first to sixth aspects, and reduces the diameter of the locking tool by reducing or eliminating the interval between the notch portions of the locking tool by the proximity tool. be able to. On the other hand, when the locking tool is expanded by expanding the gap between the notches by releasing the fastening by the proximity tool, the locking tool is notched from the base end (circumferential center) facing the notch. As it goes to the side (circumferential tip), the amount of expansion or separation increases relatively. That is, the locking protrusion of the locking tool is separated to a greater degree from the base end side toward the distal end side with the expansion of the locking tool, and the locking protrusion has a side opposite to the notch portion side. Away from the recesses on the outer surface of the corrugated tube to a greater degree from the end of the tube toward the maximum protruding height. Therefore, the locking projection can be moved to a position where it does not interfere with the outer surface of the corrugated tube with a small expansion amount of the locking tool.

  The corrugated pipe connecting device according to an eighth aspect has the effect of any one of the first to seventh aspects, by shifting the locking tool, for example, in a direction connecting the circumferential central portion and the cutout portion. A predetermined amount of gap is formed between the central portion in the circumferential direction and the outer peripheral surface of the receiving body portion. As a result, the locking projection is disposed at a non-projecting position where it does not project inward from the inner peripheral surface of the receiving body main body. In this state, the corrugated tube is inserted without interfering with the outer peripheral surface of the corrugated tube. To make it easier. In the substantially close state where the notch portion is closed, the locking tool has a substantially equal interval between the inner peripheral edge of the circumferential center portion and the notch portion and the outer diameter of the opening end of the receiving body portion. By reducing a gap such as between the outer peripheral surface of the receiving port main body portion and the like, the locking protrusion is disposed at a protruding position protruding inward from the inner peripheral surface of the receiving port main body portion.

  In addition to the effect of the seventh aspect, the corrugated pipe connecting device according to the ninth aspect is configured such that the amount of screwing of the threaded portion of the neck screw with respect to the screwing hole of the other attachment portion is increased or decreased in the locking tool. The interval of the notch portion of the locking tool can be adjusted to increase or decrease to an arbitrary interval, and can be held at a constant interval. As a result, the amount of expansion of the locking device can be increased according to the constant interval of the notch portion. As a quantity, the locking tool can be held in an arbitrarily expanded state.

  In addition to the effect of any one of claims 1 to 9, the corrugated pipe connecting device according to claim 10 smoothly and reliably connects a plurality of corrugated pipes using a receiving port that exhibits the above effect. Can do.

  A corrugated pipe connecting device according to an eleventh aspect, in addition to the effect of any one of the first to ninth aspects, smoothly and surely connects the corrugated pipe and different types of parts using a receiving port that exhibits the above effect. It can be carried out.

  A corrugated pipe connecting device according to a twelfth aspect of the present invention is a wiring device arranged in a container such as a corrugated pipe and a box using a receiving port that exhibits the above effect in addition to the effects of any one of the first to ninth aspects. Etc. can be connected smoothly and reliably.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
FIG. 1 is an exploded perspective view of a main part showing a state where a locking tool is removed from a receiving port of a corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 2 is a main part perspective view showing a state in which a locking tool is attached to the receiving port of the corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 3 is a side view showing a state before the corrugated pipe is attached to the receptacle of the corrugated pipe connecting device according to Embodiment 1 of the present invention. In FIG. 3, each of the receiving body portion, the locking tool, and the corrugated tube has an upper half portion shown in cross section. FIG. 4 is a side view showing a state in which the locking tool is attached to the receiving body portion of the receiving port from the state shown in FIG. 3 in the corrugated tube connecting apparatus according to Embodiment 1 of the present invention. In addition, also in FIG. 4, a receptacle main-body part, a locking tool, and a corrugated pipe each show the upper half part in a cross section.

  As shown in FIGS. 1 to 4, the corrugated pipe connecting device according to the first embodiment connects corrugated pipes 40 such as flexible electric conduits that are accommodated by inserting wirings and cables therein. Or connecting the corrugated pipe 40 to another pipe such as a different kind of pipe. Specifically, the corrugated tube connecting device includes a receiving tube 10 into which the corrugated tube 40 is inserted, a locking tool 20 that is detachably attached to the receiving tube, and a proximity that fastens the locking tool 20. A screw (screw nail) 30 as a tool is provided. The corrugated tube 40 has an uneven outer surface shape in which peaks 41 and valleys 42 are alternately arranged in the axial direction (length direction). On the other hand, the receiving tube 10 includes a stepped portion 13 having a first receiving body 11 having a cylindrical shape with a predetermined diameter and a second receiving body 12 having a slightly smaller diameter than the first receiving body 11. A stepped cylindrical shape that is integrally formed by being connected coaxially through the. In addition, the inner peripheral surface side of the stepped portion of the receiving tube 10 has an annular rib shape or an annular ridge protruding inward, and the tip of the corrugated tube 40 inserted therein is abutted and positioned. At the same time, it prevents further entry. In this manner, the receiving tube 10 connects the corrugated tube 40 having a predetermined diameter and the corrugated tube having a slightly smaller diameter than the corrugated tube 40, or the corrugated tube 40 and the corrugated tube 40. A slightly small-diameter dissimilar pipe is connected to each other. Moreover, the opening end 11a which is a front-end | tip of the 1st receiving port main-body part 11 comprises the circular cross section of a corresponding diameter, and the flange 11b is integrally formed in the outer periphery. As shown in FIG. 3, the flange 11 b of the first receiving port main body 11 has a ring shape that protrudes outward from the opening end 11 a. On the other hand, the opening end 12a, which is the tip of the second receiving port main body 12, has a circular cross section with a corresponding diameter, and a flange 12b is integrally formed on the outer periphery thereof. The flange 12b of the second receiving port main body 12 also has a ring shape that protrudes outwardly from the opening end 12a. The flanges 12a and 12b may be provided over the entire periphery of the opening ends 11a and 12a of the receiving body portions 11 and 12 as long as the locking tool 20 can be attached.

  As described above, the corrugated pipe connecting device according to the first embodiment uses the stepped straight tubular receiving pipe 10 in which the first receiving body 11 and the second receiving body 12 are integrated. ing. Therefore, in the first embodiment, the first receiving port main body 11, the locking tool 20 detachably attached to the opening end 11 a of the first receiving port main body 11, and the locking tool 20. The first receiving port is constituted by a screw (screw nail) 30 as a proximity tool for fastening the second receiving port, and is attached to and detached from the second receiving port main body 12 and the opening end 12a of the second receiving port main body 12. A second receiving port is configured by a locking tool (not shown) that is freely attached and a screw 30 as a proximity tool for fastening the locking tool (not shown). That is, the corrugated tube connecting apparatus according to Embodiment 1 includes a plurality (a pair) of receiving ports, and includes a locking tool 20 corresponding to the receiving ports. 3 to 4, the locking member 20 having a corresponding diameter is detachably attached to the flange 11 b of the opening end 11 a of the first receiving port main body 11. A locking tool having a corresponding diameter can also be detachably attached to the flange 12b of the open end 12a of the receiving body 12. The locking tool in this case can have the same configuration except that it has a slightly smaller diameter than the locking tool 20 corresponding to the diameter of the opening end 12a of the second receiving port main body 12. Of course, it is also possible to attach the locking tool 20 only to one of the first receiving port main body 11 or the second receiving port main body 12 and the conventional locking device to the other. .

  FIG. 5 is a rear view showing the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention. 5A shows the entire back surface of the locking tool, and FIG. 5B shows an enlarged main part of the back surface of the locking tool. FIG. 6 is a front view of the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention. In addition, FIG. 6 shows the lower half part of a locking tool in a cross section. Moreover, (a) of FIG. 6 shows the whole front of a locking tool, (b) expands and shows the principal part of the front of a locking tool. FIG. 7 is a side view showing the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention as seen from the first attachment portion side. 7A shows the whole of the locking tool, FIG. 7B shows the first attaching portion in an enlarged manner, and FIG. 7C shows another example of the first attaching portion in an enlarged manner. Show. 8 is a cross-sectional view taken along line AA in FIG. FIG. 9 is a side view showing the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention as viewed from the second attachment portion side. In addition, FIG. 9 shows the upper half part of a locking tool in a cross section. Moreover, (a) of FIG. 9 shows the whole side surface of a locking tool, (b) shows the enlarged view.

  As shown in FIGS. 5 to 9, the locking tool 20 has a circular shape corresponding to the opening end 11 a of the first receiving port main body 11, and a part in the circumferential direction is cut away to form the cutout 21. Forming. The locking tool 20 is detachably attached to the opening end 11 a of the first receiving port main body 11 and allows the end of the corrugated tube 40 to be inserted. The locking tool 20 can be expanded and contracted by the notch portion 21 by expanding and reducing the interval between the notch portions due to flexural deformation due to its own elasticity. More specifically, the locking tool 20 corresponds to the outer peripheral shape of the opening end 11a of the first receiving port main body portion 11 having a circular cross section, and has a substantially annular shape having a notch portion 21 in a part in the circumferential direction. C-shaped ring. The locking device 20 is integrally formed in a C-shaped ring as a whole by a material such as a synthetic resin (polyvinyl chloride resin or the like) having a predetermined elasticity so that the required amount can be expanded through the notch 21. Specifically, the locking tool 20 includes a receiving side attachment portion 22 having a C-shaped short cylinder shape with a predetermined diameter, and a corrugated pipe structure having a C-shaped short cylinder shape slightly smaller in diameter than the receiving side attachment portion 22. The stop part 23 is arrange | positioned coaxially, and it has comprised the shape which connected them integrally by the C-shaped plate-shaped connection part 24. FIG. The receiving side mounting portion 22 is integrally formed with an engaging claw 22a having an arc shape with a predetermined arc length (predetermined angle range) projecting inwardly on the inner peripheral surface of the central portion in the circumferential direction. The receiving side mounting portion 22 protrudes inwardly on the inner peripheral surfaces on both sides of the cutout portion 21 and has a locking claw 22b having an arc shape having an arc length (angle range) of about half of the locking claw 22a. Each is integrally formed. The locking claw 22a and the locking claw 22b can have the same configuration as the attachment part of the connector disclosed in Patent Document 1. In this case, by pressing the inclined surfaces of the locking claw 22a and the locking claw 22b against the opening end 11a of the receiving body 11, the locking tool 20 expands against its own elasticity through the notch 21. Opening, the vertical surfaces of the locking claws 22a and the locking claws 22b are locked to the inner surface of the flange 11b of the first receiving port main body 11, and the locking tool 20 is attached to the first receiving port main body 11. To be attached. However, as a matter of course, in addition to this, as long as the receiving side attachment portion 22 can be detachably attached to the opening end 11a of the first receiving body 11, the locking claw of the locking tool 20 has an arbitrary configuration. It can be.

  As shown in FIGS. 3 to 5, the locking tool 20 integrally forms locking protrusions 23 a and 23 b as a pair of locking protrusions on the inner peripheral surface of the corrugated tube locking portion 23. . Specifically, the pair of locking protrusions 23a and 23b is formed in a portion of the locking tool 20 excluding the side facing the notch 21 (circumferential center), and biased toward the notch 21. Is formed. That is, the locking protrusions 23a and 23b are formed so as to protrude inward on both sides of the notch portion 21 on the inner peripheral surface of the locking tool 20, and have a predetermined arc length (predetermined from the notch portion 21 toward the center in the circumferential direction). Angle range). And the locking tool 20 protrudes inwardly from the inner peripheral surface by the side of the opening end 11a of the receiving port main-body part 11 by reducing diameter in the state which inserted the corrugated pipe 40. As shown in FIG. It is made to enter into the trough part 42 as a recessed part of the outer surface of the corrugated pipe 40. On the other hand, the locking tool 20 is expanded in a state where the corrugated tube 40 is inserted, whereby the locking ridges 23a and 23b are retracted outward from the inner peripheral surface on the opening end 11a side of the receiving body 11. Thus, the corrugated tube 40 is separated from the trough portion 42 on the outer surface.

  The locking ridges 23 a and 23 b have a substantially crescent-shaped or substantially arcuate plate shape, and are provided continuously along the inner periphery of the locking tool 20. Specifically, the imaginary line connecting the center of the substantially annular (C-shaped annular) locking tool 20 and the center position in the width direction of the notch 21 is defined as the first imaginary line L1 (dashed line in FIGS. 5 and 6). And a second virtual line L2 (horizontal line indicated by a one-dot chain line in FIGS. 5 and 6) that is orthogonal to the first virtual line L1 and passes through the center of the locking tool 20. Suppose that At this time, the locking ridges 23a and 23b have a certain angular range extending from the second virtual line L2 of the locking tool 20 to a position closest to the notch 21 from an angular position entering the central portion in the circumferential direction. It can be provided in the arc range. For example, the locking ridges 23a and 23b have an angular range extending from the second imaginary line L2 of the locking tool 20 to the nearest position of the notch 21 from an angular position that is about 45 degrees on the circumferential center side. It can be provided in an arc range of about 135 degrees from the center of the portion 21). Therefore, one end in the length direction (arc direction), which is the starting end of the locking protrusions 23a and 23b, is located at an angular position that enters a predetermined angle from the second imaginary line L2 of the locking tool 20 toward the circumferential center portion. In the range from the central portion in the circumferential direction to the angular position, no protruding portions such as the locking protrusions 23a and 23b are provided. The other end in the length direction, which is the end of the locking protrusions 23 a and 23 b, is located in the immediate vicinity of the notch 21. At this time, the locking ridges 23a, 23b gradually extend in height from the one end in the length direction to the cutout portion 21 and extend to the cutout portion 21, and the second imaginary line L2 is formed at a predetermined angle (for example, , About 30 degrees), the maximum protrusion height LH is reached, and then the protrusion height is gradually decreased to terminate the other end in the length direction. In other words, the locking protrusions 23 a and 23 b are such that the portion that protrudes highest inward from the inner peripheral surface of the locking device 20 (the maximum protruding height LH portion) is the second portion on the inner peripheral surface of the locking device 20. The substantially crescent-shaped or arcuate planar shape is set so as to come to an angular position (for example, an angular position of about 60 degrees from the center of the notch 21) from the imaginary line L2. Further, the locking protrusions 23a and 23b are formed on both sides of the notch portion 21 so as to be line symmetric with respect to the first imaginary line L1 of the locking tool 20 (center axis). In addition, the cross-sectional shape of the locking protrusions 23a and 23b is a tapered shape that tapers toward the inner peripheral edge (tip in the cross section).

  Or the latching tool 20 of Embodiment 1 can also be grasped | ascertained as follows. That is, the locking device 20 includes a first half on the side of the notch 21 (the lower half below the horizontal line indicated by the one-dot chain line in FIG. 6) and a second half on the opposite side of the notch 21 (see FIG. 6 and the upper half of the horizontal line by the one-dot chain line in FIG. At this time, the locking protrusions 23a and 23b gradually protrude from the angular position in the middle of the second half (for example, the angular position of about 135 degrees from the notch) toward the first half. At a predetermined angular position in the middle of the first half (for example, an angular position of about 60 degrees from the cutout portion 21), the maximum projection height LH is reached, and the cutout portion 21 extends from the maximum projection height LH portion. It is integrally formed on the inner peripheral surface of the locking tool 20 so as to protrude with a gradually decreasing protrusion height toward the end. That is, the locking protrusions 23a and 23b are formed on the inner peripheral surface of the locking tool 20 so that the maximum protruding height LH is located on the notch 21 side (lower half side) of the locking tool 20. ing. Here, the locking protrusions 23a and 23b have positions where the maximum protrusion height LH is slightly deviated toward the notch 21 side from the center in the length direction (arc direction) in FIG. (An angular position of about 60 degrees from the center). However, the locking ridges 23a and 23b can also be formed such that the central portion in the length direction becomes the maximum protruding height LH portion when the planar shape thereof is a substantially crescent plate shape or a substantially arcuate plate shape. For example, when the locking protrusions 23a and 23b are provided in an angle range of about 135 degrees from the center of the cutout portion 21, the maximum protrusion height LH portion is from the center of the cutout portion 21 that is a half angle thereof. It can also be arranged at an angular position of about 67-68 degrees.

  Furthermore, the locking tool 20 has a pair of attachment parts 25 and 26 formed on both sides of the notch part 21 by integral molding. In other words, boss-like or substantially cylindrical attachment parts 25 and 26 are integrally formed at both ends (both ends in the circumferential direction) facing the notch 21 in the locking tool 20, respectively. And the locking tool 20 inserts the said screw (screw nail) 30 as a proximity tool which consists of a fastener in the said pair of attachment parts 25 and 26, and fastens the said pair of attachment parts 25 and 26 mutually. By doing so, the interval between the notches 21 is reduced against its own elasticity, and when the attachment portions 25 and 26 are brought into close contact with each other, the diameter can be reduced to the minimum diameter. Specifically, the screw 30 includes a head portion 31 and a screw portion 32 extending coaxially from the head portion 31. Further, the attachment portion 25 on one side (upper side in FIG. 1 and the right side in FIG. 6) has a shorter length (shaft) than the attachment portion 26 on the other side (lower side in FIG. 1 and left side in FIG. 6). In addition, as shown in FIG. 7, a substantially oblong screw hole 25a having a short oval cross section is formed in the axial direction thereof. In addition, the short diameter (dimension in the left-right direction in FIG. 7) of the screw hole 25a of the attachment portion 25 is slightly smaller (smaller dimension) than the diameter of the screw portion 32 of the screw 30, and the screw portion of the screw 30 32 is screwed (not inserted). On the other hand, the major diameter (vertical dimension in FIG. 7) of the screw hole 25a of the attachment part 25 is slightly larger (larger dimension) than the diameter of the screw part 32, and the screw 30 is inserted into the screw hole 25a. When the tip of the portion 32 is screwed, the screw portion 32 can be screwed by slightly adjusting the position in the major axis direction of the screw hole 25a. Here, as in another example shown on the lower right side of FIG. 7, the long diameter of the screw hole 25 a of the first attachment portion 25 may be larger. The screw hole 25a of the first attachment portion 25 is formed in a long hole shape when the locking tool 20 is arranged in a narrow work place or the like and fastened with the screw 30 so that the screw 30 by a tool such as a screwdriver is used. This is to further facilitate the insertion and screwing work. That is, even when working in a narrow place, when the screw portion 32 of the screw 30 is inserted and screwed by a tool such as a screwdriver, any one of the long-diameter direction screw holes 25a of the first attachment portion 25 is arranged. If the tip of the screw portion 32 can be arranged at the position, the screw portion 32 can be inserted and screwed in, so that the screw 30 can be easily attached. The other attachment portion 26 is formed with a screw hole 26a having a circular cross section in the axial direction. The diameter of the screw hole 26a of the attachment part 26 is slightly smaller than the diameter of the screw part 32 of the screw 30, and the screw part 32 of the screw 30 is screwed (not inserted).

  When the locking tool 20 is in a non-fastened state (free state) with the screw 30, as shown in FIGS. The notch 21 is closed as it is fastened, and finally the notch 21 is almost completely closed (both the attachment parts 25 and 26 are in close contact with each other). Here, in the free state, the locking tool 20 has a substantially circular space formed by inner peripheral edges excluding the inner peripheral edges of the locking protrusions 23a and 23b. On the outer surface of the outer surface (outer peripheral edge of the peak portion 41) or slightly outward, that is, the inner diameter of the locking member 20 is substantially the same as or slightly larger than the outer diameter of the corrugated tube 40. Thus, the initial shape (the shape in a free state) is set. Alternatively, the locking tool 20 has a corrugated tube in which the extension of the substantially circular space formed by the entire inner peripheral edge including the inner peripheral edges of the locking protrusions 23a and 23b is inserted and locked in a free state. The entire inner diameter including the locking protrusions 23a and 23b of the locking tool 20 is located on the outer extension of the outer surface 40 (the outer peripheral edge of the peak portion 41) or slightly outward, that is, the corrugated tube 40. The initial shape (the shape in a free state) can also be set so as to be substantially the same as or slightly larger than the outer diameter.

  Further, the locking tool 20 is configured such that, in the separated state of the notch 21, the interval between the notch 21 and the inner peripheral edge of the central portion in the circumferential direction facing the notch 21 is the first receiving body portion. It is preferable to set the initial shape so that the gap is a predetermined amount larger than the outer diameter of the flange 11b on the outer periphery of the 11 open ends 11a. In this way, when the receiving side mounting portion 22 of the locking tool 20 is attached to the flange 11b of the opening end 11a of the receiving body 11 through the locking claws 22a and 22b, the locking tool 20 is in the circumferential direction. The predetermined amount can be moved in a direction connecting the inner peripheral edge of the central portion and the notch 21 (a direction along the first imaginary line L1), and the locking tool 20 is shifted in the same direction to adjust the position. Thus, the locking ridges 23a and 23b can be arranged at non-projecting positions that do not project inward from the inner peripheral surface of the opening 11a of the receiving body 11. That is, in this case, in the free state in which the notch portion 21 of the locking tool 20 is in the separated state, the inner peripheral edge of the center portion in the circumferential direction on the inner peripheral surface of the receiving side mounting portion 22 of the locking tool 20 and the notch portion 21. The distance between the inner peripheral edge (the vertical distance in FIGS. 5 and 6) is larger by the predetermined amount than the diameter (outer diameter) of the outer peripheral edge of the flange 11b of the receiving port body 11. As a result, when the corrugated tube 40 is inserted, the position of the locking tool 20 can be adjusted by moving it in the direction connecting the circumferential central portion and the cutout portion 21. And if the locking tool 20 shifts to the notch part 21 side, the locking ridges 23a and 23b provided offset to the notch part 21 side will be outside the inner peripheral surface of the opening 11a of the receiving body part 11 (that is, , A position that does not interfere with the outer surface of the corrugated tube 40). In addition, in the said free state, the space | interval between the inner periphery of a pair of latching claw 22a, 22b of the latching tool 20 of the receptacle main-body part 11 is also prevented so that the position adjustment of the above latching tool 20 may not be prevented. A predetermined amount larger than the diameter (outer diameter) of the outer peripheral surface. Further, the locking tool 20 substantially disappears the gap between the inner peripheral surface of the receiving-side mounting portion 22 and the outer peripheral edge of the flange 11b of the receiving-portion main-body portion 11 when the notch 21 is closed. Accordingly, the locking ridges 23a and 23b are arranged at the protruding positions protruding inward from the inner peripheral surface of the opening 11a of the receiving body 11. That is, in a state where the notch 21 of the locking tool 20 is closed, the interval between the inner peripheral edge of the center portion in the circumferential direction and the inner peripheral edge of the notch 21 in the receiving side mounting portion 22 of the locking tool 20 is The diameter of the outer peripheral edge of the flange 11b of the mouth main body 11 is substantially the same, and the locking tool 20 cannot be moved in the direction connecting the circumferential center and the notch 21 after the corrugated tube 40 is inserted.

  Next, the usage method, operation, and effect of the corrugated pipe connecting device according to the first embodiment configured as described above will be described with reference to FIGS. FIG. 10 shows the corrugated tube connecting apparatus according to Embodiment 1 of the present invention, in which one end of the corrugated tube is inserted into the receptacle body portion from the attachment state of the locking member to the receptacle body portion shown in FIG. It is a side view which shows the state fixed with the latching tool. In addition, (a) of FIG. 10 shows the upper half part of a receptacle main-body part, a locking tool, and a corrugated pipe in a cross section. FIG. 10B is an enlarged view of the locking part of the receiving body by the locking claw of the locking tool. FIG. 11 shows the corrugated tube connecting apparatus according to Embodiment 1 of the present invention, in which one end of the corrugated tube is inserted into the receiving port main body portion from the attachment state of the locking member to the receiving port main body portion shown in FIG. It is a top view which shows the state fixed with the latching tool. In addition, (a) of FIG. 11 shows the right-hand half part (illustrated as an upper half part in FIG. 11) in a cross section of the receiving body part, the locking tool, and the corrugated tube. FIG. 11B is an enlarged view of the locking portion of the corrugated tube by the locking protrusion of the locking tool. FIG. 12 is a front view showing an expanded / reduced diameter state of the locking tool before and after inserting the corrugated pipe through the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention; Indicates the expanded state, and (b) indicates the reduced diameter state.

  In order to connect or connect a corrugated tube using the corrugated tube connecting device according to the first embodiment, first, as shown in FIG. Next, the locking claw 22a and the latching claw 22b of the locking tool 20 are sequentially or simultaneously pressed against the flange 11b of the receiving body 11. Then, the notch 21 of the locking tool 20 is separated from the original position by the force from the locking claws 22a and 22b, and the locking tool 20 slightly expands from the free state against its elasticity. Then, when the locking claws 22a and 22b of the locking tool 20 are positioned on the far side beyond the flange 11b of the receptacle body 11, the locking claws 22a and 22b are flanged as shown in FIG. 11b is hooked. In FIG. 4, the latching claw 22 a is illustrated so as to latch on the upper side of the receptacle body 11, and the latching claw 22 b is latched on the lower side of the receptacle body 11. At the same time, the locking tool 20 returns to its shape due to elasticity, and the interval between the notches 21 is returned to the original spaced state. Thereby, the receiving side attaching part 22 of the locking tool 20 can be attached to the outer periphery of the opening 11a of the receiving body 11.

  Next, as shown in FIG. 10, the distal end portion of the corrugated tube 40 is inserted into the interior of the receiving body portion 11 from the corrugated tube locking portion 23 side of the locking tool 20. At this time, as shown in FIG. 12 (a), the locking tool 20 is expanded by slightly pulling the notch portion 21 by hand or the like against its elasticity, and this expanded state is maintained. Then, the tip of the corrugated tube 40 is inserted into the locking tool 20. At this time, since the entire inner peripheral edge including the locking protrusions 23a and 23b of the locking tool 20 is located outward from the outer surface of the corrugated tube 40, the locking protrusions 23a and 23b of the locking tool 20 are The corrugated tube 40 can be smoothly inserted into the locking tool 20 without interfering with the peak portion 41 of the corrugated tube 40. The distance between the inner peripheral surfaces of the left and right side portions of the locking tool 20 at this time is D1. The corrugated tube 40 is usually inserted to such an extent that the tip of the corrugated tube 40 comes into contact with the stepped portion 13 of the receiving body 11. At this time, as described above, the interval between the central portion in the circumferential direction on the inner peripheral surface of the receiving-side mounting portion 22 and the notch portion 21 is determined by the predetermined amount from the outer diameter of the flange 11b of the receiving body 10. In the case of increasing the size, the locking tool 20 is slightly movable in a direction connecting the central portion in the circumferential direction and the cutout portion 21 (vertical direction in FIG. 4). Therefore, in this case, the locking ridges 23a and 23b formed to be biased toward the notch 21 side by shifting the locking tool 20 in the direction in which the notch 21 is located (downward in FIG. 4) are further illustrated. 4, the position can be adjusted so that the inner peripheral edges of the locking protrusions 23 a and 23 b are not positioned inward from the inner peripheral surface of the receiving port main body 11 and are disposed outward. . As a result, when the corrugated tube 40 is inserted into the retainer 20 with the retainer 20 attached to the receiving body 11, the outer surface of the corrugated tube 40 is the retaining protrusion 23 a of the retainer 20. , 23b, and the corrugated tube 40 can be smoothly inserted into the interior of the receptacle body 11 from the locking member 20.

  Next, when the distal end portion of the corrugated tube 40 is inserted into the locking tool 20 and completely inserted into the interior of the receiving port main body 11, the hand is released from the locking tool 20 and released. Then, the locking tool 20 restores the shape to the free state by returning the notch 21 to the separated state of the original position by its own elasticity. At this time, by appropriately setting the spacing between the notches 21 of the locking tool 20 (that is, the inner diameter of the inner peripheral surface of the locking tool 20 and the protruding amount of the locking protrusions 23a and 23b), A part of both locking ridges 23a and 23b of the locking tool 20 may enter the valley portion 42 of the corrugated tube 40 and be partially locked. Next, the screw portion 32 of the screw 30 is screwed into the screw hole of the other attachment portion 26 from the screw insertion hole 25a of one attachment portion 25 of the locking tool 20 and tightened. Then, the locking tool 20 is reduced in diameter against its own elasticity, and the interval between the notches 21 is reduced. Finally, as shown in FIG. 26 are brought into close contact with each other, and the interval between the notches 21 disappears. The distance between the inner peripheral surfaces of the left and right side portions of the locking tool 20 at this time is D2. Then, the entire locking protrusions 23a and 23b of the locking tool 20 completely enter the valley portion 42 of the corrugated tube 40 to be in a completely locked state. For convenience of explanation, the screw 30 is not shown in FIG.

  With reference to FIG. 13, the amount of expansion of the locking tool 20 when the wavy tube 40 is inserted (that is, the distance D1 between the inner peripheral surfaces of both side portions of the locking tool 20 necessary for the insertion of the wavy tube 40) will be described. Consider. FIG. 13 is an explanatory view schematically showing the formation range of the locking protrusion in the corrugated pipe connecting device according to Embodiment 1 of the present invention, as compared with the conventional example. First, in the corrugated tube connecting apparatus of the first embodiment, as shown in FIG. 13, the locking tool 20 has the start ends of the locking ridges 23 a and 23 b arranged at a predetermined angle θ from the center of the notch portion 21. is doing. This is a position that is biased toward the notch 21 than in the case of the conventional example indicated by the two-dot chain line in FIG. 13 (position in the vicinity of the central portion in the circumferential direction of the locking tool). Moreover, the maximum protrusion height position LH part of the latching protrusions 23a and 23b is arrange | positioned in the position of predetermined angle (theta) LH which becomes the near side of the 2nd virtual line L2 from the center of the notch part 21 of the latching tool 20. FIG. Yes. This is a position that is also more biased toward the notch 21 than in the case of the conventional example indicated by the two-dot chain line in FIG. 13 (position on the second imaginary line L2). Here, when the interval between the notches 21 is enlarged and the locking tool 20 is expanded, the locking tool 20 moves from the base end portion (circumferential center portion) facing the notch portion 21 to the notch portion 21 side (circumferential direction). The amount of expansion or separation increases relatively toward the tip. That is, the locking protrusions 23a and 23b of the locking tool 20 are directed from the base end (starting end) side in the circumferential central portion side to the distal end (terminal end) side on the cutout portion 21 side as the locking tool 20 is expanded. Will be separated by a greater degree. In particular, the locking tool 20 has a corrugated tube 40 with a greater degree from the start end portion on the opposite side of the notch portion 21 side to the maximum protruding height portion of the locking protrusions 23a and 23b. It will be spaced apart from the outer surface. Therefore, the expansion amount of the locking tool 20 required when inserting the corrugated tube 40 can be considerably smaller than that in the conventional example, and the locking protrusions 23a, 23b can be easily moved to a position where it does not interfere with the outer surface of the corrugated tube 40. As a result, it is not necessary to excessively widen the locking tool 20 when the corrugated tube 40 is inserted, and the burden and load on the locking tool 20 can be greatly reduced. Further, since the corrugated tube 40 can be inserted with a smaller expansion amount than in the conventional example, when the locking tool 20 is expanded to the same expansion amount as in the conventional example, the locking ridge of the locking tool 20. The protrusion amount of 23a, 23b can be increased as a whole, and the locking force or engagement force with respect to the corrugated tube 40 can be greatly improved. In addition, the above advantages can be similarly obtained when the locking tool 20 is expanded and the corrugated tube 40 is removed from the locking protrusions 23a and 23b.

  Further, according to the first embodiment, when the locking tool 20 is expanded, a larger expansion ratio (in a direction from the circumferential central portion toward the notch portion 21, the locking tool 20 has a constant expansion amount. Accordingly, the maximum protrusion height LH portion of the locking protrusions 23a and 23b can be arranged at a position on the side of the notch portion 21 where the distance between the locking protrusions 23a and 23b can be increased). The amount of expansion of the locking tool 20 necessary for the insertion of the corrugated tube 40 can be further reduced. Further, in the first embodiment, the locking protrusions 23a and 23b gradually increase the protruding height from the second half to the first half on the inner peripheral surface of the locking tool 20. Since it protrudes and reaches the maximum protruding height LH in the middle of the first half, the protruding height of the locking ridges 23a and 23b gradually increases as the distance from the circumferential central portion of the locking tool 20 increases. . Therefore, since the separation distance (interval) of the both sides in the circumferential direction of the locking tool 20 increases as the distance from the central portion in the circumferential direction of the locking tool 20 increases, the locking protrusion can be reduced even with a smaller amount of expansion of the locking tool 20. The part with the large protrusion height of the strips 23 a and 23 b can be further separated from the outer surface of the corrugated tube 40. As a result, it is possible to insert the corrugated tube 40 into the engaging protrusions 23a and 23b disposed on the inner peripheral side of the engaging member 20 without causing the outer surface of the corrugated tube 40 to interfere with the expansion amount of the engaging member 20 being smaller. In addition, the protruding height of the locking ridges 23a and 23b is increased, and the locking tool 20 is subjected to a large burden while increasing the locking force / engagement force of the corrugated tube 40 by the locking tool 20. Can be surely prevented. In addition, since the locking protrusions 23a and 23b are formed on both sides of the notch 21 so as to be line-symmetrical with respect to the first imaginary line L1 of the locking tool 20, the troughs 42 of the corrugated tube 40 are formed. It can be locked with the same locking force symmetrically. Therefore, the corrugated tube 40 can be locked more smoothly and reliably by the locking protrusions 23a and 23b of the locking tool 20. As described above, the corrugated pipe connecting device according to the first embodiment is configured so that the latching tool 20 for connecting the corrugated pipe 40 to the receiving port 10 has a smaller expansion amount than the conventional one. The outer surface of the corrugated tube 40 can be inserted into the engaging protrusions 23a and 23b arranged on the inner peripheral side of the tool 20 without interfering with each other, and the engaging force of the corrugated tube 40 by the engaging tool 20 is increased. It is possible to reliably prevent a large burden on the locking tool 20.

Embodiment 2
FIG. 14 is an explanatory view schematically showing a locking tool of the corrugated pipe connecting device according to Embodiment 2 of the present invention.
As shown in FIG. 14, in the corrugated tube connecting apparatus according to the second embodiment, the locking tool 120 is engaged with the inner peripheral surface of the corrugated tube locking portion (not shown) as in the first embodiment. A pair of locking protrusions 123a and 123b as stop protrusions are integrally formed. On the other hand, in the second embodiment, the locking protrusions 123a and 123b are formed only on the side of the notch 21 from the second imaginary line L2 of the locking tool 120. That is, the start ends of the locking ridges 123a and 123b are arranged on the second imaginary line L2 on the side of the notch 21 further than the locking ridges 23a and 23b of the first embodiment. The ends of the strips 123a and 123b extend to the position closest to the notch portion 21 (both ends in the circumferential direction of the locking tool 20), like the locking protrusions 23a and 23b of the first embodiment. Moreover, the maximum protrusion height LH part of latching protrusion 123a, 123b is arrange | positioned at the same angular position as Embodiment 1 (for example, angle position of about 60 degree | times from the center of the notch part 21). The planar shape of the locking ridges 123a and 123b was obtained by cutting off the crescent-shaped plate-shaped tip portions (portions on the start end side from the second imaginary line L2) of the locking ridges 23a and 23b of the first embodiment. Such a substantially crescent-shaped plate shape or a substantially arcuate plate shape is used.

  In the corrugated pipe connecting device according to the second embodiment, the outer surface of the corrugated pipe 40 is formed by forming the locking protrusions 123a and 123b only on the side of the notch 21 from the second imaginary line L2 of the locking tool 120. In order to avoid interference with the locking tool 120, a larger half of the locking tool 120 in the circumferential center portion side (a portion in the circumferential center portion side than the second imaginary line L2) is required. The locking protrusions 123a and 123b are not formed at all. As a result, it is possible to insert the engaging protrusions 123a and 123b arranged on the inner peripheral side of the engaging member 120 without causing the outer surface of the corrugated tube 40 to interfere with the expansion amount of the engaging member 120 with a smaller amount. it can. In addition, the protrusion height of the locking protrusions 123a and 123b is further increased, and the engagement force of the corrugated tube 40 by the locking tool 120 is increased, thereby reliably preventing a large burden from being applied to the locking tool 120. be able to.

Embodiment 3
FIG. 15 is an explanatory view schematically showing a locking tool of the corrugated pipe connecting device according to Embodiment 3 of the present invention.
As shown in FIG. 15, in the corrugated pipe connecting device according to the third embodiment, the locking tool 220 is engaged with the inner peripheral surface of the corrugated pipe locking portion (not shown) as in the second embodiment. A pair of locking protrusions 223a and 223b as stop protrusions are integrally formed. On the other hand, in the third embodiment, the locking ridges 223a and 223b are formed in a concavo-convex shape in which a large number of small rectangular plate-like bodies are arranged at regular intervals along the inner periphery of the locking tool. That is, in the third embodiment, the locking protrusions 223a and 223b are configured by discontinuously (intermittently) providing these many small piece plate-like bodies along the inner periphery of the locking tool 220. . The locking ridges 223a and 223b are arranged such that the small piece plate-like body that is the starting end of the locking ridges 223a and 223b is slightly over the second imaginary line L2 of the locking tool 220, and the other small piece plate-like bodies are notched from the same position. It is formed only on the side of the notch 21 from the second virtual line L2 so as to extend to the portion 21. That is, the starting ends of the locking ridges 223a and 223b are on the second imaginary line L2, which is substantially the same position as the locking ridges 123a and 123b of the second embodiment (exactly the second imaginary line L2 On the other hand, the end points of the locking ridges 223a and 223b are the positions closest to the notch 21 (the circumferential direction of the locking tool 20), like the locking ridges 23a and 23b of the first embodiment. (Both tip positions). Further, the maximum protrusion height LH portion of the locking protrusions 223a and 223b (that is, the angular position where the small plate-like body having the maximum protrusion height is arranged) is the same angular position (for example, a notch portion) as in the first embodiment. 21 (an angular position of about 60 degrees from the center). Alternatively, the small plate-like body at the start end position can be set to the maximum protruding height, and the protruding height of the small piece plate-like body can be gradually reduced toward the notch 21. Thus, the planar shape of the locking ridges 223a and 223b is such that the shape of the locking ridges 123a and 123b of the second embodiment is intermittently formed at predetermined intervals.

  The corrugated pipe connecting device according to the third embodiment is basically implemented by forming the locking protrusions 223a and 223b only on the side of the notch 21 from the second imaginary line L2 of the locking tool 220. Similarly to the second embodiment, the locking tool 220 is inserted through the locking protrusions 223a and 223b arranged on the inner peripheral side of the locking tool 220 without causing the outer surface of the corrugated tube 40 to interfere with the expansion amount of the locking tool 220. be able to. Moreover, the protrusion height of the locking protrusions 223a and 223b is further increased to reliably prevent a large load from being applied to the locking tool 220 while increasing the engagement force of the corrugated tube 40 by the locking tool 220. be able to.

Embodiment 4
FIG. 16: is a front view which shows the latching tool and neck screw which are the corrugated pipe | tube connection apparatuses based on Embodiment 6 of this invention. In addition, FIG. 16 shows the lower half part of a locking tool in a cross section. 16A shows the entire front surface of the locking tool together with a necked screw, and FIG. 16B shows an enlarged main part of the front surface of the locking tool along with the necked screw.
As shown in FIG. 16, the corrugated pipe connecting device according to the fourth embodiment uses a necked screw 330 as a proximity tool. Specifically, the necked screw 330 includes a head portion 331, a columnar neck portion 332 having a smaller diameter than the head portion 331 and projecting from the head portion 331, and a neck portion having a larger diameter than the neck portion 332 by the amount of the screw thread. And a threaded portion 333 extending coaxially from 332. Also, one attachment portion 325 of the locking tool 320 has a screw hole 325a and an insertion hole 325b formed coaxially therethrough, and the screw hole 325a is disposed outside and the insertion hole 325b is disposed inside. It has a composite hole. Further, the locking tool 320 penetrates the screw hole 325a of the composite hole with a circular cross section having a diameter larger than the diameter of the neck portion 332 of the necked screw 330 and a diameter smaller than the diameter of the screw portion 333 by a screw thread. It is a hole. Further, in the locking tool 320, the insertion hole 325 b is a through hole having a circular cross section that is larger in diameter than the diameter of the threaded portion 333 of the necked screw 330. On the other hand, the other attachment portion 26 of the locking tool 330 has the same configuration as that of the attachment portion 26 of the first embodiment, and is opposed to the composite hole of the one attachment portion 325, and A screw hole 26 having a diameter smaller than that of the screw portion 333 is provided.

  In the corrugated pipe connecting device according to the fourth embodiment, the threaded portion 333 of the necked screw 330 is screwed into the threaded hole 325a of the one attaching portion 325, and the base end portion of the threaded portion 333 is completely removed by one side. The screw portion 333 is disposed in the insertion hole 325b of the attachment portion 325, and the other end of the screw portion 333 of the neck screw 333 is screwed into the screw hole 26a of the other attachment portion 26. By adjusting the screwing amount of the screw 26 into the screw hole 26a, the interval of the notch portion 21 is increased or decreased against the elasticity of the locking member 320, and is held at a constant interval. The amount of expansion can be kept constant. That is, in the fourth embodiment, a shoulder is formed between the thread at the start position and the neck 332 at the start position of the thread at the base end of the thread 333 of the necked screw 330, and the thread (shoulder ) Is abutted and locked to the shoulder (stepped portion) between the screw hole 325a and the insertion hole 325b of the composite hole of one attachment portion 325, and the return of the screw portion 333 is prevented. On the other hand, since the tip of the threaded portion 333 is screwed into the threaded hole 26a of the other attachment portion 26, the necked screw 330 is rotated forward (rotated in the screwing direction, that is, rotated clockwise). Then, according to the amount of rotation, the screwing amount of the tip of the screw part 333 in the screwing hole 26a of the other attachment part 26 increases, and conversely, the necked screw 330 is rotated in the reverse direction (screw screwing direction). (Ie, rotating in the counterclockwise direction), the screwing amount of the tip of the threaded portion 333 in the screwing hole 26a of the other attachment portion 26 decreases according to the amount of rotation. Therefore, the corrugated pipe connecting device according to the fourth embodiment is configured to increase or decrease the screwing amount of the threaded portion 333 of the necked screw 330 with respect to the screwing hole 26a of the other attachment portion 26 in the locking member 330. In addition, the interval between the notches 21 of the locking member 320 can be increased or decreased to an arbitrary interval and held at a constant interval. As a result, the expansion amount of the locking tool 320 is set to a constant expansion amount corresponding to the constant interval of the cutout portion 21, and the locking tool 320 can be held in an arbitrary expanded state. For example, the notched portion 21 is forcibly separated by the necked screw 330 against the elasticity of the locking tool 320, and the locking ridges 23 a and 23 b are locked to the state of retracting outward from the outer surface of the corrugated tube 40. It is also possible to maintain the deformation of the tool 320 and more easily insert the corrugated tube 40.

  By the way, in the corrugated tube locking device of the present invention, the locking tool is free so that the corrugated tube can be inserted into the predetermined amount of the expanded state (that is, the expanded state in the free state). The inner diameter in the state can be set slightly larger than the outer diameter of the corrugated pipe. Alternatively, as in the first embodiment, the inner diameter in the free state is changed so as to allow the insertion of the corrugated tube when the locking tool is further expanded by a certain amount from the expanded state in the free state. It can also be set slightly smaller than the outer diameter of the tube. Further, as is clear from the description of the third embodiment, the angular range in which the locking projection is provided in the locking tool is an angular position excluding a predetermined angular range in the circumferential central portion of the inner peripheral surface of the locking tool ( Any angular position can be used as long as the angular position is shifted from the conventional starting end position to the notch side. That is, the starting position of the locking projection is not limited to the angular position in the case of Embodiment 1 (about 135 degrees from the center of the notch), but is also a predetermined angle at the center in the circumferential direction of the inner peripheral surface of the locking tool. As long as the angular position excluding the range (the angular position displaced from the conventional starting end position toward the notch portion) is set, any angular position can be set. For example, the starting position of the locking projection is set to an angular position θ of about 120 degrees from the center of the notch, in addition to the angle position θ of about 135 degrees from the center of the notch, or about 90 degrees from the center of the notch. Or an angular position of In addition, it is preferable to provide the starting end of the locking projection within an angle range of 90 to 135 degrees from the center of the notch from the viewpoint of reducing the expansion amount of the locking tool and securing the locking force by the locking projection. . When the start end of the locking projection is at an angular position of about 90 degrees from the center of the notch, the locking projection is provided only on the side of the notch 21 from the second imaginary line L2, and the second imaginary line It does not exist at all in the circumferential center part side from L2.

  Further, the angular position θLH of the maximum protrusion height LH portion of the locking projection is also about 60 degrees from the center of the notch portion (about the second imaginary line L2 to the notch portion side) as in the first embodiment. In addition to the position of 30 degrees, it can be arranged at other angular positions such as on the second virtual line L2. In addition, as long as the maximum protrusion height LH part of a latching protrusion is arrange | positioned at the said lower half part side (notch part side from the 2nd virtual line L2), if it is the same dimension, there will be fewer latches than before. Since the locking projection is disposed at a position where the locking projection does not interfere with the outer surface of the corrugated tube (a position spaced outward from the outer surface of the corrugated tube) by the amount of expansion, it can be disposed at an arbitrary position. In addition, when the maximum protrusion height LH portion of the locking protrusion is disposed at the position closer to the notch portion than the second virtual line L2 on the inner peripheral surface of the locking tool as in the first embodiment, the maximum protrusion height Compared with the case where the LH portion is arranged on the second imaginary line L2 or in the circumferential central portion side on the inner peripheral surface of the locking tool, when the locking tool is expanded by the same amount, a pair of locking The separation ratio between the protrusions can be set to a larger expansion ratio, and the amount of expansion of the locking tool necessary for the insertion of the corrugated tube can be further reduced. In addition, the proximity tool of the present invention is not limited to a screw or neck screw, a combination of a bolt and a nut, etc., as long as it can be inserted into a pair of attachment parts of a locking tool to fasten both attachment parts. It can comprise from the fastener of this. Further, when a locking tool similar to the locking tool 20 or the like of the above-described embodiment is detachably attached to the second receiving port main body portion 12 of the receiving port 10, the locking tool has a diameter of the above-described locking tool. It is only slightly smaller than the stopper 20 or the like, and the other configurations are the same.

FIG. 1 is an exploded perspective view of a main part showing a state where a locking tool is removed from a receiving port of a corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 2 is a main part perspective view showing a state in which a locking tool is attached to the receiving port of the corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 3 is a side view showing a state before the corrugated pipe is attached to the receptacle of the corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 4 is a side view showing a state in which the locking tool is attached to the receiving body portion of the receiving port from the state shown in FIG. 3 in the corrugated tube connecting apparatus according to Embodiment 1 of the present invention. FIG. 5 is a rear view showing the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 6 is a front view of the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention. FIG. 7 is a side view showing the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention as seen from the first attachment portion side. 8 is a cross-sectional view taken along line AA in FIG. FIG. 9 is a side view showing the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention as viewed from the second attachment portion side. FIG. 10 shows the corrugated tube connecting apparatus according to Embodiment 1 of the present invention, in which one end of the corrugated tube is inserted into the receptacle body portion from the attachment state of the locking member to the receptacle body portion shown in FIG. It is a side view which shows the state fixed with the latching tool. FIG. 11 shows the corrugated tube connecting apparatus according to Embodiment 1 of the present invention, in which one end of the corrugated tube is inserted into the receiving port main body portion from the attachment state of the locking member to the receiving port main body portion shown in FIG. It is a top view which shows the state fixed with the latching tool. FIG. 12 is a front view showing an expanded / reduced diameter state of the locking tool before and after inserting the corrugated pipe through the locking tool of the corrugated pipe connecting device according to Embodiment 1 of the present invention; Indicates the expanded state, and (b) indicates the reduced diameter state. FIG. 13 is an explanatory view schematically showing the formation range of the locking protrusion in the corrugated pipe connecting device according to Embodiment 1 of the present invention, as compared with the conventional example. FIG. 14 is an explanatory view schematically showing a locking tool of the corrugated pipe connecting device according to Embodiment 2 of the present invention. FIG. 15 is an explanatory view schematically showing a locking tool of the corrugated pipe connecting device according to Embodiment 3 of the present invention. FIG. 16: is a front view which shows the latching tool and neck screw which are the corrugated pipe | tube connection apparatuses based on Embodiment 6 of this invention.

DESCRIPTION OF SYMBOLS 10: Receptacle, 11: 1st receptacle main-body part, 11a: Open end, 12: 2nd receptacle main-body part 12a: Open end, 20: Locking tool, 21: Notch part, 23a, 23b: Engagement Stop protrusion (locking protrusion)
26: attachment part, 26a: screw hole, 30: screw (proximity tool)
120: Locking tool, 123a, 123b: Locking protrusion (locking protrusion)
220: Locking tool, 223a, 223b: Locking protrusion (locking protrusion)
320: Locking tool, 325: Attachment part, 325a: Screw hole, 325b: Insertion hole 330: Neck screw (proximity tool), 331: Head, 332: Neck, 333: Screw part L1: First virtual Line, L2: Second imaginary line, LH: Maximum protrusion height

Claims (12)

A corrugated pipe connecting device to which a corrugated pipe is inserted and connected,
A cylindrical receptacle body portion having an opening end into which the end portion of the corrugated tube is inserted, and a circular shape corresponding to the opening end of the receptacle body portion, and is attached to and detached from the opening end of the receptacle body portion A receiving opening including a locking tool that is freely attached and allows insertion of an end of the corrugated pipe,
The locking device of the receiving port is formed by cutting out a part in the circumferential direction to form a cutout portion, and the interval between the cutout portions can be expanded and reduced by bending deformation due to its own elasticity so that it can be expanded and contracted freely. And having an engaging projection projecting inwardly on the inner peripheral surface side thereof, and reducing the diameter in a state where the corrugated tube is inserted, thereby allowing the engaging projection to be opened on the opening end side of the receiving body portion. The locking projection is opened to the opening body portion by expanding the inner surface of the corrugated tube so as to protrude inward from the inner peripheral surface of the corrugated tube and to enter the concave portion of the outer surface of the corrugated tube. It is configured to evacuate outward from the inner peripheral surface on the end side and to be detached from the concave portion of the outer surface of the corrugated tube,
The locking protrusion of the locking tool is formed at a portion excluding the side facing the notch, and is formed to be biased toward the notch.
The locking tool has a substantially annular cross section having the notch, and the range in which the locking protrusion is formed to be biased toward the notch is defined by the center of the locking tool and the center position in the width direction of the notch. Is defined as a first imaginary line, and an imaginary line orthogonal to the first imaginary line and passing through the center of the locking tool is a second virtual line, the inner circumference of the locking tool In the range from the second imaginary line on the side facing the notch to about 45 degrees to the position closest to the notch, or on the inner peripheral surface of the locking tool, the second imaginary line A range from an angular position slightly on the line or from the second imaginary line to the notch part side to a position closest to the notch part, or an angle range of about 90 degrees to about 135 degrees from the center position in the width direction of the notch part A range from the angular position of the notch to the position closest to the notch. Corrugated tube connecting device that. A corrugated pipe connecting device to which a corrugated pipe is inserted and connected,
A cylindrical receptacle body portion having an opening end into which the end portion of the corrugated tube is inserted, and a circular shape corresponding to the opening end of the receptacle body portion, and is attached to and detached from the opening end of the receptacle body portion A receiving opening including a locking tool that is freely attached and allows insertion of an end of the corrugated pipe,
The locking device of the receiving port is formed by cutting out a part in the circumferential direction to form a cutout portion, and the interval between the cutout portions can be expanded and reduced by bending deformation due to its own elasticity so that it can be expanded and contracted freely. And having an engaging projection projecting inwardly on the inner peripheral surface side thereof, and reducing the diameter in a state where the corrugated tube is inserted, thereby allowing the engaging projection to be opened on the opening end side of the receiving body portion. The locking projection is opened to the opening body portion by expanding the inner surface of the corrugated tube so as to protrude inward from the inner peripheral surface of the corrugated tube and to enter the concave portion of the outer surface of the corrugated tube. It is configured to evacuate outward from the inner peripheral surface on the end side and to be detached from the concave portion of the outer surface of the corrugated tube,
The locking protrusion of the locking tool is formed at a portion excluding the side facing the notch, and is formed to be biased toward the notch.
The locking projection of the locking tool is divided into two parts when the locking tool is divided into a first half on the cutout side and a second half on the opposite side of the cutout. The projection is gradually increased from the second half toward the first half, and the height of the first half is increased. Consisting of
The locking tool has a substantially annular cross section having the notch,
The range in which the locking projection of the locking tool is formed to be biased toward the notch is
A virtual line connecting the center of the locking tool and the center position in the width direction of the notch is defined as a first virtual line, and a virtual line orthogonal to the first virtual line and passing through the center of the locking tool is defined as a first virtual line. When the second imaginary line is used, on the inner peripheral surface of the locking tool, from the angular position slightly on the second imaginary line or slightly into the notch part side from the second imaginary line to the position closest to the notch part. The first range, or
In the inner peripheral surface of the locking tool, the range from the position closest to the notch to the angular position that is about 45 degrees from the second imaginary line to the side facing the notch, or the width direction of the notch The corrugated pipe connecting device, wherein the corrugated pipe connecting device is a second range which is a range from an angular position in an angular range of about 90 degrees to about 135 degrees from a central position to a position closest to the notch .   The locking projection of the locking tool has a maximum protruding height in the middle of the first half, and gradually protrudes from the maximum protruding height portion toward the notch and protrudes. 3. The corrugated pipe connecting device according to claim 2, wherein the corrugated pipe connecting device comprises a locking protrusion integrally formed on the inner peripheral surface of the locking tool.   A virtual line connecting the center of the locking tool and the center in the width direction of the notch is defined as a first virtual line, and a virtual line orthogonal to the first virtual line and passing through the center of the locking tool is a second virtual line. When the imaginary line is used, the locking projection is formed only on the notch part side from the second imaginary line of the locking tool. The corrugated pipe connecting device as described.   A virtual line connecting the center of the locking tool and the center in the width direction of the notch is defined as a first virtual line, and a virtual line orthogonal to the first virtual line and passing through the center of the locking tool is a second virtual line. When the imaginary line is used, the locking projections are formed on both sides of the notch portion of the locking tool so as to be symmetrical about the first imaginary line of the locking tool, respectively. The corrugated tube connecting device according to any one of claims 1 to 3, wherein   A virtual line connecting the center of the locking tool and the center in the width direction of the notch is defined as a first virtual line, and a virtual line orthogonal to the first virtual line and passing through the center of the locking tool is a second virtual line. When the imaginary line is used, the locking projection is formed only on one side with the first imaginary line of the locking tool as the center. The corrugated pipe connecting device according to the item.   The locking tool forms a pair of attachment portions on both sides of the cutout portion, and inserts and closes a proximity tool made of a fastener to the pair of attachment portions, thereby resisting its own elasticity. The corrugated pipe connecting device according to any one of claims 1 to 6, wherein an interval between the notches can be reduced.   In the separated state in which the notch portion is opened, at least a distance between the inner peripheral edge of the central portion in the circumferential direction facing the notch portion and the notch portion is outside the opening end of the receiving body portion. When the gap is larger than the diameter by a predetermined amount and is attached to the opening end of the receptacle body portion, the predetermined amount can be moved in the direction connecting the inner peripheral edge of the circumferential central portion and the cutout portion. By shifting the stopper, the locking projection can be arranged in a non-projecting position that does not project inward from the inner peripheral surface of the receiving port main body portion, and in a substantially close state in which the notch portion is closed, The engagement protrusion is disposed at a protruding position protruding inward from the inner peripheral surface of the receiving port main body by reducing a gap between the receiving port main body and the outer peripheral surface. Item 8. The corrugated tube connection device according to any one of Items 1 to 7. The proximity tool is a necked screw comprising a head, a neck projecting from the head, and a threaded portion having a diameter larger than the neck and extending coaxially from the neck.
One of the attachment portions of the locking tool has a composite hole formed by coaxially penetrating a screw hole and an insertion hole, and arranging the insertion hole on the outside and the insertion hole on the inside. The screw hole of the composite hole has a diameter larger than the neck portion of the proximity tool and a diameter smaller than the screw portion, and the insertion hole has a diameter larger than the screw portion of the proximity tool. ,
The other of the attachment part of the locking tool is opposed to the composite hole of the one attachment part, and has a screw hole having a smaller diameter than the screw part of the proximity tool,
The screw part of the neck screw is screwed into the screw hole of the one attachment part, and the base end part of the screw part is completely disposed in the insertion hole of the one attachment part, and the tip of the screw part By screwing the portion into the screw hole of the other attachment portion and adjusting the screwing amount of the screw portion of the necked screw into the screw hole of the other attachment portion. The amount of expansion of the locking device can be held at a constant amount by adjusting the interval of the notch portions to be increased and decreased against the elasticity of the rod and holding it at a constant interval. Corrugated tube connection device.   The corrugated pipe connecting device according to any one of claims 1 to 9, wherein the corrugated pipe connecting device includes a plurality of the receiving ports and the locking member corresponding to the plurality of receiving ports.   The corrugated pipe connecting device according to claim 1, further comprising a pipe connecting port having a structure different from that of the receiving port.   10. The container according to claim 1, further comprising an accommodating body having an accommodating space in which the receptacle is formed so as to protrude outward and the wiring device and the faucet joint can be accommodated therein. Corrugated pipe connection device.

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