WO2019035221A1 - Ring member for electrical conduit, attachment structure for attaching ring member for electrical conduit to ring member attachment part of male engagement part, method for using ring member, and method for attaching ring member for electrical conduit to electrical conduit - Google Patents

Abstract

This ring member 1 for an electrical conduit has a tapered section or a sloped section having a diameter that decreases, in a cross-section thereof in the conduit axial direction, from the tips of claw sections 9 toward a reduced diameter section 11 thereof. The plurality of claw sections 9 are provided toward the other end side of the ring member 1 for an electrical conduit. The ring member 1 for an electrical conduit substantially has a C-shape, and a connection section 17a at one end and a connection section 17b at the other end, which are formed on both circumferential direction end sections 15. The connection section 17a at the one end and the connection section 17b at the other end face each other, and facing engagement sections 19, the lengths of which can be mutually adjusted, are formed on the facing surfaces of the respective connections sections 17a and 17b. Additionally, because slide guides 29 that protrude in parallel from the reduced diameter section 11 in the tube axis direction, can be formed at predetermined intervals between the plurality of claw sections 9 on the circumference of the reduced diameter section, the ring member 1 for an electrical conduit can be slid onto a male side engagement part of an electrical conduit.

Description

Ring member for conduit tube, structure for mounting ring member for conduit tube to ring member mounting portion of male fitting portion, usage method of ring member, and method for mounting ring member for conduit tube to conduit

The present invention relates to a ring member for a conduit for use in a male fitting portion and a structure for attaching a ring member for a conduit to a ring member attaching portion of a male fitting portion for connecting conduits through which electric wires are inserted. , A method of using the ring member, and a method of attaching the conduit ring member to the conduit.

For example, a corrugated tube made of resin is used as a wire protection tube for underground burial. In order to lay such a wire protection tube, it is necessary to connect a plurality of wire protection tubes. Therefore, connection means, such as a pipe joint which can connect electric wire protection pipes mutually, is needed.

As a means for connecting such wire protection tubes, for example, there is a method of bolting a wire tube using a half broken semicircular arc member (Patent Document 1).

The pipe joint of Patent Document 1 includes a joint body made of a synthetic resin, and a watertight packing made of an elastic material provided with flange edges projecting in the outer peripheral direction from both end portions of the semicircular arc-shaped portion. The joint body is a groove for receiving the watertight packing, with the portions between the both sides remaining in the width direction. Further, bolt holes for tightening are provided at both end portions in the circumferential direction of the joint body. In the watertight packing, a central portion in the width direction of the semicircular arc-shaped portion is a protruding portion that protrudes to the inner surface side, and both side edge portions are recessed portions that are recessed to the outer peripheral surface side.

In addition, there is a corrugated synthetic resin pipe in which a receiving port is formed at one end and a difference port is formed at the other end (Patent Document 2).

In Patent Document 2, a ring is mounted in the vicinity of the outlet, and a groove is provided in the vicinity of the receptacle. The groove receives the ring when the other port of another corrugated synthetic resin tube is inserted into the socket. The cooperation between the groove and the ring prevents the corrugated synthetic resin tube from coming off. The shape of the ring used in this case is formed by cutting a part in the circumferential direction and further superposing two ring members in the axial direction.

In addition, a pipe joint is formed by inserting a corrugated pipe end portion having a convex portion whose cross section in the pipe radial direction is substantially square into a fitting cylindrical portion whose cross section in the pipe radial direction in the pipe joint is substantially square, and connecting these (Patent Document 3).

In the pipe joint of Patent Document 3, a hooking piece made of a thin metal plate is provided on the inner wall surface of the fitting cylinder. The convex portion of the corrugated tube pushes the locking piece outward against the elastic force, thereby permitting insertion of the corrugated tube into the fitting cylindrical portion. At this time, the hooking piece is fitted into the gap between the adjacent convex portions of the corrugated tube inserted into the fitting cylindrical portion by its elastic return force, and is engaged with the convex portions. By doing this, it is possible to prevent the wave tube from coming off the fitting tube portion. For this reason, while being able to prevent the omission of a corrugated pipe certainly, connection work can be simplified and the extension to the outward direction from the convex part of a corrugated pipe can be suppressed as much as possible.

In addition, there is a retaining ring which is excellent in joining workability even in a narrow place, can be compactly and easily join waved flexible tubes, and does not easily drop out of a pipe joint even in an impact or the like (Patent Document 4).

The patent document 4 is provided with a stopper and an inclination stopper in the outer peripheral part of a main body. The inclination stoppers are provided at mutually opposing positions of the main body. The inclined portions respectively provided on the inclination stoppers are directed in opposite directions. The retaining ring can be rotated while deforming along the slope of the ramp within the female fitting, and the ramp stopper is fitted to the retaining ring mounting.

JP, 2000-337573, A JP, 2002-098268, A JP, 2005-172233, A JP, 2009-275790, A

However, in the method of using a bolt as in Patent Document 1, the connection operation is troublesome. For this reason, there is a need for a pipe joint which can be fixed to a conduit by one touch without using bolts and nuts and which is not easily detached.

Moreover, the ring of patent document 2 is a mere split ring, and the insertion property at the time of connecting synthetic resin tubes with waves, and the effect of drop-off prevention are not large.

Further, the pipe joint of Patent Document 3 has a complicated retaining mechanism, and can not be easily fixed to a conduit with one touch, and when manufacturing the pipe joint, fixing of the hooking piece to the pipe joint is troublesome. is there. In addition, when a large pulling force is applied to the pipe joint, there is a possibility that the connection between the pipe joint and the hooking piece may buckle.

Further, the retaining ring of Patent Document 4 is not always good in terms of the mounting property. In addition, dimensional tolerances of the pipe joint make it susceptible to mounting, and a different size retaining ring is required for each size of the pipe joint used.

The present invention has been made in view of such problems, and it is a simple structure without using a bolt and a nut, and can be connected to a conduit tube by one touch, a conduit ring member and a male fitting It is an object of the present invention to provide a mounting structure of a ring member for a conduit tube to a ring member mounting portion of a joint portion, a usage method of the ring member, and a method of mounting a ring member for a conduit tube to a conduit.

In order to achieve the above-described object, a first invention is a retaining ring for a conduit including a claw portion and a reduced diameter portion, wherein in a cross section in a tube axial direction, the tip of the claw portion is contracted toward the reduced diameter portion. One end side connection portion and the other end side connection portion are formed at both end portions in the circumferential direction of the reduced diameter portion, and fitting portions of the respective connection portions are provided. Are fitted to each other.

The circumferential length adjustment of the ring member by mutually shifting and fitting the fitting positions of the fitting portions formed on the opposing surfaces of the one end side connecting portion and the other end side connecting portion with each other. Is desirable.

The first end side connection portion and the other end side connection portion face each other, and the opposing surfaces of the respective connection portions are fitted to face each other toward either inward or outward in the center direction. An engagement portion may be formed, and the engagement portions may be engaged with each other.

The fitting portion of the one end side connection portion is formed to be separated at a plurality of places toward the center direction outward, and the fitting portion of the other end side connection portion is inward in the center direction Toward each other, and may be formed separately at a plurality of places, and the respective fitting portions may be fitted to be opposed to each other.

The fitting portion of the one end side connection portion is separated at a plurality of places in a fitting portion facing outward in the central direction and a fitting portion facing inward in the central direction, The fitting portion of the other end side connection portion is formed in a plurality of places separated into a fitting portion facing inward in the center direction and a fitting portion facing outward in the center direction, The fitting portion facing outward in the direction and the fitting portion facing inward in the central direction may be fitted to face each other.

The fitting portion facing outward in the central direction and the fitting portion facing inward in the central direction of each of the one end side connection portion and the other end side connection portion are formed in the circumferential direction. It may have a sawtooth groove group or a large number of fine projections, an adhesive layer having release paper, or a structure of either a locking protrusion or a locking slit.

The fitting portion facing outward in the central direction and the fitting portion facing inward in the central direction of each of the one end side connection portion and the other end side connection portion are formed in the circumferential direction. It is a saw blade-like groove group, and the tip angle of each blade which constitutes a saw blade-like groove may be a right angle or an acute angle.

It is preferable that a slide guide that protrudes in parallel with the axial direction of the tube from the reduced diameter portion is formed in a portion where the claw portion is not provided on the circumference of the reduced diameter portion.

The slide guide is formed in a predetermined shape substantially in parallel along the tube axis direction, and the slide guide is formed at a predetermined number and a predetermined distance from the claw portion in the circumferential direction of the ring member It is also good.

The slide guide may have a rectangular or trapezoidal planar shape.

The shape of the slide guide may be formed into a substantially U-shaped, U-shaped or V-shaped frame shape.

The thickness of the inside of the outer edge may be thinner than the thickness of the outer edge of the nail surface of the nail.

The claw portion has a tapered shape in which the diameter decreases toward the reduced diameter portion, the taper angle on the outer surface side of the claw portion is different from the taper angle on the inner surface side, and the thickness of the tip of the claw portion is It may be thicker than the thickness of the reduced diameter portion.

The claw portion has a tapered shape in which the diameter decreases toward the reduced diameter portion, the taper angle on the outer surface side of the claw portion is the same as the taper angle on the inner surface side, and the thickness of the claw portion is It may be thicker than the thickness of the reduced diameter portion.

A predetermined number of cuts may be provided at predetermined positions between the claws at predetermined intervals in the circumferential direction at the edge of the reduced diameter portion.

The ring member is preferably made of at least one of ABS resin, high density PE, polymer alloy of PP resin and ABS resin, or polymer alloy of PC resin and ABS resin.

According to the first aspect of the invention, since the ring member is substantially C-shaped, the ring member can be easily attached to the male fitting portion of the conduit. Further, since the connection portions are formed at both end portions in the circumferential direction of the ring member, the circumferential end portions do not open and fall off when attached to the conduit. Moreover, the male fitting part to which the ring member was attached can be easily connected with another female fitting part. Therefore, the conduits can be connected with one touch without using a bolt or a nut.

Moreover, the circumferential direction length of the ring member can be adjusted by mutually shifting and fitting the fitting position of the circumferential direction of each connection part of the circumferential direction both ends. For this reason, the present invention can be reliably applied to dimensional errors due to blow molding or the like during manufacturing or to dimensional deviations of a large diameter conduit (male fitting portion). Furthermore, the same ring member can be applied to conduits of multiple sizes, as long as the product sizes are of close dimensions.

Moreover, opposing surfaces can be fitted by each connecting part of the circumferential direction both ends mutually facing, and forming a fitting part in the opposing surface of each connecting part.

In addition, the same effect can be obtained by separating the fitting portions of the connection portions at both ends in the circumferential direction into a plurality of pieces.

In addition, the respective connection parts at both ends in the circumferential direction are separated into a plurality of fitting parts facing one another in the central direction outward and fitting parts facing inward in the central direction, The other fitting portion is divided into a plurality of inward fitting portions in the central direction and outward fitting portions in the central direction, and the outward fitting portions in the respective central directions are separated. By fitting the fitting portions facing inward in the central direction to each other so as to face each other, the fitting portions are unlikely to be detached, and both can be connected reliably.

In addition, the fitting portions of the respective connection portions at both ends in the circumferential direction can be reliably connected by forming either a saw blade-shaped groove group formed in the circumferential direction or a large number of fine projection groups. be able to.

In particular, if the angle of the tip of the blade constituting the saw blade-like groove is a right angle or an acute angle, the blades bite together and do not easily come off.

In addition, by forming a slide guide that protrudes parallel to the tube axis direction from the reduced diameter portion at a portion where the claw portion of the reduced diameter portion is not provided, the ring member is inclined when mounted on the male fitting portion. In the male fitting portion, it is possible to slide straight in the tube axial direction. The slide guide is engaged with and locked to the locking wall when the ring member slides between the pair of wall portions, so that the ring member does not come off the conduit.

Further, by forming the slide guides at a predetermined number and at predetermined intervals in the circumferential direction of the ring member with respect to the claws, the above-described effects can be obtained with certainty.

Further, the shape of the slide guide can be formed into a rectangular or trapezoidal planar shape, or can be a substantially U-shaped, U-shaped, or V-shaped frame. Even if it is any of these shapes, the effect mentioned above can be acquired reliably. In particular, if the shape of the slide guide is a substantially U-shaped, U-shaped, or V-shaped frame shape, the rigidity of the slide guide is low and the restraining force in the circumferential direction by the slide guide is reduced. It becomes easy to deform the fitting claws. Therefore, the insertion resistance when inserting the male fitting portion into the female fitting portion can be reduced, and the connection with the female fitting portion becomes easy.

In addition, the insertion resistance when inserting the male fitting portion into the female fitting portion can be reduced by forming the inner thickness of the outer edge portion thinner than the thickness of the outer edge portion of the nail surface. Can. In addition, the thickness of the outer edge portion of the claw surface is equal to that of the outer edge portion even when the connecting portion is subjected to a pulling force by forming the claw portion with a thick outer edge portion and a thin inner thickness of the outer edge portion. The claws do not buckle because they are formed thicker than the inner thickness of the part.

In addition, the thickness of the tip of the claw portion is obtained by making the claw portion have a tapered shape in which the diameter is reduced toward the reduced diameter portion and making the taper angle on the outer surface side of the claw portion different from the taper angle on the inner surface side. Can be made thicker than the thickness of the reduced diameter portion. Therefore, the rigidity of the claws can be increased.

In addition, the thickness of the claw portion is reduced even if the claw portion has a tapered shape in which the diameter is reduced toward the reduced diameter portion and the taper angle on the outer surface side of the claw portion is the same as the taper angle on the inner surface side. The same effect can be obtained by making it thicker than the thickness of the part.

Further, the claws can be easily deformed by providing cuts at predetermined intervals in the circumferential direction at the edge of the reduced diameter portion. For this reason, the insertion resistance at the time of inserting a male fitting part in a female fitting part can be decreased.

Also, by selecting the material of the ring member to be at least one of ABS resin, high density PE, polymer alloy of PP resin and ABS resin, or polymer alloy of PC resin and ABS resin, sufficient rigidity and Deformability can be secured.

A second invention is a mounting structure in which the conduit ring member according to the first invention is attached to a male fitting portion, and the male fitting portion is disposed to be separated in a tube axial direction. A pair of wall portions and a ring member moving portion forming a substantially cylindrical peripheral surface sandwiched between the wall portions, and moving between the wall portions formed at both ends of the ring member moving portion It is the attachment structure to the ring member attachment part of the male fitting part characterized in that the ring member for conduits is attached to the ring member moving part so that it can be possible.

A second aspect of the present invention is the attachment structure in which the ring member for conduit tube according to the first aspect is attached to a male fitting portion, and the male fitting portion is disposed separately in the tube axis direction. And a ring member moving portion sandwiched between the wall portions, wherein the ring member moving portion is a large diameter portion formed on the tip side of the male fitting portion; It has a small diameter portion formed on the base side of the male fitting portion, and a slope portion formed between the large diameter portion and the small diameter portion, and is formed on both ends of the ring member moving portion The conduit ring member is attached to the large diameter portion of the ring member moving portion so as to be able to move between the wall portions, to a ring member attaching portion of a male fitting portion. It is a mounting structure.

According to the second aspect of the invention, the ring member is disposed in the ring member moving portion sandwiched by the pair of wall portions of the male fitting portion, and the ring member can move between the wall portions When inserting the male fitting portion and the female fitting portion, the ring member can slide and easily connect the both.

Further, when fitting the male fitting portion to the female fitting portion, the ring member can move on the large diameter portion of the two-stage structure of the male fitting portion. Furthermore, when the male fitting portion is pushed into the female fitting portion, the claw portion of the ring member is located at the small diameter portion, and the claw portion can be easily deformed.

A third invention is a method of using the ring member for conduit tube according to the first invention attached to a male fitting portion, wherein the male fitting portions are disposed apart in the axial direction of the tube. A pair of wall portions and a straight tubular ring member moving portion sandwiched between the wall portions, and the conduit ring member is formed between the wall portions formed at both ends of the ring member moving portion. Attached to the ring member moving part so as to be movable, and use the conduit ring member so that the movement of the conduit ring member is restricted by the slide guide and the wall part It is a usage method of the ring member which is characterized.

According to the third invention, the ring member is disposed in the ring member moving portion sandwiched by the pair of wall portions of the male fitting portion, and the ring member can move between the wall portions. When inserting the male fitting portion and the female fitting portion, the ring member can slide and easily connect the both.

In the second invention, when the conduit ring member is attached to the male fitting portion, the fitting portions of the connection portions formed at both ends of the ring member are adhered and fixed with an adhesive. You can also When the conduit ring member is attached to the male fitting portion and used in the method of using the ring member of the third invention, the fitting portions of the connection portions formed on both ends of the ring member are bonded with an adhesive. You may use it. Of course, in the present invention, fixing with an adhesive is not necessarily required as described above, but it is also possible to use adhesively fixing the connection portions formed on both ends of the ring member.

A fourth invention uses the ring member for conduit according to the first invention, and the fitting position in the circumferential direction of the fitting portion formed on the opposing surface of the one end side connecting portion and the other end side connecting portion And adjusting the circumferential length of the ring member by fitting them in a mutually offset manner.

According to the fourth invention, the ring member can be formed so as to be adjustable in length by changing the connection position of the ring member. As described above, if the connection portion of the ring member is formed so as to be adjustable in length, it absorbs dimensional variations at the time of manufacturing the fitting portion of the conduit or optimizes the clearance between the ring member and the ring member attachment portion. can do.

According to the present invention, it is possible to connect the conduit tube with a simple structure without using a bolt or a nut and to connect the conduit tube by one touch, the wire to the conduit ring member and the ring member attachment portion of the male fitting portion It is possible to provide a mounting structure of a pipe ring member, a method of using the ring member, and a method of mounting a conduit ring member to a conduit.

FIG. 2 is a perspective view showing a ring member attachment structure 10; FIG. 5 is a cross-sectional view showing a ring member attachment structure 10; The perspective view which shows the ring member 1 for conduits. (A) is a figure which shows the state which the circumferential direction edge part 15 of the ring member 1 for conduit tubes opened, (b) is a figure which shows the state which connected connection part 17a, 17b. (A) is an enlarged view of connection part 17a, 17b, (b) is an enlarged view of connection part 17a. (A), (b) is a figure which shows the state which changed the connection position of connection part 17a, 17b of the ring member 1 for conduits. (A) is a figure which shows the state which the circumferential direction edge part 15 of the ring member 1 for conduit rings of other embodiment opened, (b) is a figure which shows the state which connected connection part 17a, 17b. (A) is a fragmentary sectional view of ring member 1 for conduits, (b) is a fragmentary sectional view of ring member 1 for conduits of other embodiments. FIG. 5 is a cross-sectional view showing a connection structure 20. The perspective view which shows the ring member 1f for conduit tubes. The perspective view which shows the ring member 1a for conduit tubes. The perspective view which shows the ring member 1b for conduit tubes. The perspective view which shows the ring member 1c for conduit tubes. The side view which shows the ring member attachment structure 10a. Sectional drawing which shows the ring member attachment structure 10a. The perspective view which shows the ring member 1d for conduits. The perspective view which shows the ring member 1e for conduits. The side view which shows the ring member attachment structure 10b. Sectional drawing which shows the ring member attachment structure 10b. Sectional drawing which shows the ring member attachment structure 10c. The perspective view which shows the ring member 1g for conduit tubes.

First Embodiment
Hereinafter, the ring member mounting structure 10 according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a ring member mounting structure 10, and FIG. 2 is an axial sectional view of the ring member mounting structure 10. As shown in FIG. The ring member mounting structure 10 mainly includes a conduit 5, a water blocking member 3, a conduit ring member 1 and the like. The ring member mounting structure 10 is a mounting structure in which the conduit ring member 1 is mounted to the ring member mounting portion of the male fitting portion 7 of the conduit 5.

The conduit 5 is a corrugated tube having flexibility such as high density polyethylene. The conduit 5 may not be long as long as it is a tubular member, and includes a tubular member through which an electric wire is inserted, such as a tubular joint. A male fitting portion 7 is formed on the outer peripheral portion in the vicinity of the end portion of the conduit 5. The male fitting portion 7 includes a pair of wall portions 13 disposed apart from each other in the tube axis direction, and a straight tubular ring member moving portion 21 forming a substantially cylindrical peripheral surface sandwiched by the wall portions 13. Have. The wall portion 13 is a portion having an outer diameter larger than that of the surrounding portion.

In the ring member moving part 21, the conduit ring member 1 is disposed. The conduit ring member 1 is attached to the ring member moving portion 21 so as to be able to move between the wall portions 13 formed at both ends of the ring member moving portion 21. The pair of wall portions 13 are disposed apart from each other in the tube axis direction, and restrict the operating range of the conduit ring member 1. That is, the ring member moving part 21 becomes a ring member attaching part of the male fitting part 7.

As shown in FIG. 2, the conduit ring member 1 is disposed such that the reduced diameter portion 11 side faces the distal end side (left side in the drawing) of the conduit 5. That is, the tip end of the claw portion 9 of the conduit ring member 1 is disposed so as to face the base side (right side in the drawing) of the conduit 5. Since the inner diameter of the conduit ring member 1 is smaller than the outer diameter of the wall portion 13, the conduit ring member 1 is held by the ring member moving portion 21 between the wall portions 13. Here, the base means the direction opposite to the tip side of the male portion of the conduit.

Here, the length in the tube axis direction of the conduit ring member 1 is shorter than the length of the ring member moving portion 21. Therefore, the conduit ring member 1 has a clearance between at least one of the wall portions 13 in the state of being disposed in the ring member moving portion 21. For this reason, the conduit ring member 1 is slidable in the tube axial direction in the ring member moving part 21.

A water blocking member accommodating portion is provided on the base side of the ring member moving portion 21. The water blocking member housing portion is a groove having a substantially rectangular cross section, and the water blocking member 3 is housed in the water blocking member housing portion. That is, the water blocking member 3 is provided on the base side of the wall portion 13 on the base side of the male fitting portion 7 on the base side. The water blocking member 3 is an annular member, and the inner diameter of the water blocking member 3 is smaller than the outer diameter of the water blocking member housing portion, and the inner surface of the water blocking member 3 is in close contact with the outer surface of the water blocking member housing portion .

The water blocking member 3 is made of, for example, a rubber or a water expansion member. Further, the water blocking member 3 has a shape in which the inner peripheral portion of the cross-sectional shape is linear (approximately the same diameter in the tube axis direction), and the outer peripheral portion has a slope portion extending from one end to the other in the tube axial direction Have. As shown in FIG. 2, the largest outer diameter portion of the water blocking member 3 is disposed toward the base side of the conduit 5, and the outer diameter of the portion is the same as that of the conduit 5 in the male fitting portion 7. The water blocking member 3 projects outward in the radial direction, which is larger than the maximum outer diameter.

Next, the conduit ring member 1 will be described in detail. FIG. 3 is a perspective view of the conduit ring member 1. As described above, the conduit ring member 1 is a conduit retaining ring including the claws 9 and the reduced diameter portion 11. The shape and number of the claws 9 of the conduit ring member 1 are not limited to the illustrated example.

The conduit member ring member 1 is preferably made of resin and is preferably made of at least one of ABS resin, high density PE, polymer alloy of PP resin and ABS resin, or polymer alloy of PC resin and ABS resin.

The conduit ring member 1 has a tapered portion or a slope portion which reduces in diameter from the tip end of the claw portion 9 toward the reduced diameter portion 11 in a cross section in the tube axial direction. That is, one end side of the conduit ring member 1 is a reduced diameter portion 11 whose outer diameter is smaller than that of the other portion. A plurality of claws 9 are provided toward the other end side of the conduit ring member 1. The claws 9 are provided separately from the reduced diameter portion 11 in the circumferential direction via the slits 8. Further, as the claw portion 9 goes from the reduced diameter portion 11 to the tip, the diameter is gradually increased so that the outer diameter is gradually increased.

The conduit ring member 1 is substantially C-shaped, and a connecting portion 17 a on one end side and a connecting portion 17 b on the other end side are formed at each of the circumferential end 15 on both sides of the reduced diameter portion 11.

FIG. 4A is a view showing a state before connecting the respective connection portions 17a and 17b (that is, the ring member 1 for conduit tube in a substantially C-shaped state). The connecting portion 17a and the connecting portion 17b face each other, and on the facing surfaces of the respective connecting portions 17a and 17b, the fitting portions 19 facing each other toward either the inner side or the outer side in the central direction Is formed.

Fig.5 (a) is an enlarged view of fitting part 19 comrades. In the illustrated example, the fitting portion 19 facing outward in the central direction of the connecting portion 17a and the fitting portion 19 facing inward in the central direction of the connecting portion 17b are a plurality of saws formed in the circumferential direction. It comprises a blade-like groove 22. That is, the fitting portion 19 is configured by a saw blade-shaped groove group formed in the circumferential direction. In the present embodiment, the mating saw tooth groove groups are engaged with each other, whereby the fitting portion 19 of the connecting portion 17a and the fitting portion 19 of the connecting portion 17b are fitted.

FIG. 5 (b) is a further enlarged view of the connection portion 17 a. Each blade 24 which comprises the saw blade-like groove 22 consists of the fitting surface 24a which the mutually blade 24 meshes, and the slope 24b which connects fitting surface 24a. That is, the blade 24 is substantially triangular. It is desirable that the angle (E in the figure) between the fitting surface 24a and the slope 24b in the vicinity of the tip of the blade 24 be a right angle or an acute angle. If the angle between the fitting surface 24 a and the inclined surface 24 b is an obtuse angle, the meshing of the blade 24 is easily released.

Furthermore, let F be the normal to the arc-like fitting portion 19 at the base of the fitting surface 24 a. When the angle between the fitting surface 24a and the slope 24b is an acute angle, the angle (E in the figure) between the fitting surface 24a and the slope 24b is larger than the angle (G in the figure) between the normal F and the slope 24b. It is desirable to be small. The connection portion 17b also has a similar shape, so that a turn is formed on the blade 24, and when the two saw blade grooves are engaged with each other, the blade 24 does not easily come off.

FIG.4 (b) is a figure which shows the state which fitted the fitting part 19 which mutually opposes. By fitting the fitting portion 19 on the outer surface side of the connection portion 17a and the fitting portion 19 on the inner surface side of the connection portion 17b to each other, the conduit ring member 1 can be made annular.

Here, when fitting the fitting portions 19 formed on the opposing surfaces of the connection portion 17a on one end side and the connection portion 17b on the other end side using the conduit ring member 1 as shown in FIG. As shown in the above, all the sawtooth grooves 22 and the blades 24 can be fitted together completely. Moreover, as shown in FIG.6 (b), one part saw-tooth-shaped groove 22 and blade 24 comrades can also be fitted. Thus, the circumferential length adjustment of the ring member can be performed by shifting the fitting positions in the circumferential direction to each other, and the ring members can be attached to the conduit 5.

According to such a method of attaching the conduit ring member 1 to the conduit 5, the length adjustment of the conduit ring member 1 is performed to attach the conduit ring 5 to the conduit 5, so that the fitting portion of the conduit 5 is manufactured. It is possible to absorb dimensional variations at the time. Further, the clearance between the conduit ring member 1 and the ring member mounting portion can be optimized.

The fitting structure of the connection portions 17a and 17b is not limited to the sawtooth groove group. Fig.7 (a) is a figure which shows the state before connecting connection part 17a, 17b in which the fitting part 19a was provided. The fitting portion 19a is composed of a large number of minute projections. For example, the fitting portion 19a is a planar fastener. The microprojections may be linear.

As shown in FIG. 7B, the fitting portions 19a facing each other are fitted, and the minute projections of the fitting portion 19a are engaged with each other, whereby both can be fitted. As described above, the form of the fitting portion is not limited as long as it can be engaged with each other. For example, it may be an adhesive layer having a release paper.

In this manner, the fitting portions 19 are formed on the connection portions 17a and 17b at both ends in the circumferential direction of the conduit ring member 1 and are fitted to each other, whereby the circumferential ends of the conduit ring member 1 are obtained. It can be connected. Under the present circumstances, the opening diameter of the diameter-reduced part 11 of the ring member 1 for conduits can be adjusted by adjusting the fitting position of the fitting part of the opposing surface of connection part 17a, 17b. That is, the circumferential length adjustment of the conduit ring member 1 is achieved by mutually shifting and fitting the fitting positions in the circumferential direction of the fitting portions 19 formed on the facing surfaces of the connecting portion 17a and the connecting portion 17b. (Ie adjustment of the inner diameter) is possible.

By doing this, the length of the conduit ring member 1 can be adjusted according to the size of the male fitting portion 7 to be used. For example, even with the male fitting portion 7 of the same size, variations in the outer diameter may occur due to dimensional error or the like during manufacturing. By adjusting the length of the conduit ring member 1, it is possible to appropriately cope with variations in the outer diameter. The same conduit ring member 1 can also be applied to male fitting portions 7 of a plurality of sizes.

Fig.8 (a) is a figure which shows the detail of the cross-sectional shape of the ring member 1 for conduits. As described above, the outer surface of the conduit ring member 1 gradually increases in diameter from the reduced diameter portion 11 to the end of the claw portion 9. That is, the outer surface side of the claw portion 9 has an outer surface tapered portion 23 a whose diameter is reduced from the tip end of the claw portion 9 toward the reduced diameter portion 11 in the cross section in the tube axial direction. Similarly, on the inner surface side of the claw portion 9, an inner surface tapered portion 23 b whose diameter is reduced from the tip end of the claw portion 9 toward the reduced diameter portion 11 in the tube axial direction cross section is provided.

Here, the taper angle of the outer surface tapered portion 23 a of the claw portion 9 and the taper angle of the inner surface tapered portion 23 b are substantially the same. Therefore, the thickness of the claw portion 9 is substantially constant. On the other hand, a step is formed on the inner surface near the boundary between the claw portion 9 and the reduced diameter portion 11, and the thickness of the claw portion 9 (A in the figure) is the thickness of the reduced diameter portion 11 (B in the figure) Too thick. By so doing, deformation of the reduced diameter portion 11 on the base side of the claw portion 9 is facilitated while securing the rigidity of the claw portion 9.

In addition, the cross-sectional shape of the nail | claw part 9 is not restricted to the example shown to Fig.8 (a). For example, as shown in FIG. 8B, the taper angle of the outer surface taper portion 23a of the claw portion 9 may be different from the taper angle of the inner surface taper portion 23b. That is, the angle of the outer surface tapered portion 23 a is larger than the taper angle of the inner surface tapered portion 23 b with respect to the central axis direction of the conduit ring member 1. Also in this case, the thickness (A in the figure) of the tip of the claw portion 9 can be made thicker than the thickness (B in the figure) of the reduced diameter portion 11.

Next, a method of using the conduit ring member 1 attached to the ring member attaching portion of the male fitting portion 7 will be described. FIG. 9 is a view showing a connection structure 20 between the male fitting portion 7 and the female fitting portion 25. As shown in FIG. The method of connecting the male fitting 7 and the female fitting 25 is as follows. First, the male fitting portion 7 and the female fitting portion 25 are disposed to face each other, and the tip of the male fitting portion 7 is inserted into the female fitting portion 25.

The female fitting portion 25 is formed on the inner peripheral portion of the tube, and has a ring member fitting portion 27 that protrudes to the inner surface in a tapered shape that gradually reduces in diameter from the opening side. When the male fitting portion 7 is pushed into the female fitting portion 25, the ring member 1 for conduit tube disposed in the ring member moving portion 21 in the ring member fitting portion 27 (tapered surface) of the female fitting portion 25. The outer surface taper portion 23a of Further, when the male fitting portion 7 is pushed into the female fitting portion 25, the ring member 1 for conduit tube slides in the ring member moving portion 21, and the ring member fitting portion 27 of the female fitting portion 25. As a result, the claws 9 are pressed. Thereby, the claw portion 9 of the conduit ring member 1 is deformed so as to reduce its diameter.

When the male fitting portion 7 is further pushed into the female fitting portion 25, the end of the claw portion 9 passes through the ring member fitting portion 27. At this time, the resiliently deformed ring member 1 for electric conduit tube is released from the pressure from the ring member fitting portion 27, and is restored to the original diameter and expanded in diameter. At this time, the outer diameter of the tip end portion of the claw portion 9 is larger than the inner diameter of the ring member fitting portion 27. Thereby, the claw portion 9 is fitted to the ring member fitting portion 27 of the female fitting portion 25. Thus, the connection structure 20 can be obtained.

In the connection structure 20, even if the male fitting portion 7 is pulled out from the female fitting portion 25 because the tip end of the claw portion 9 fits with the ring member fitting portion 27 of the female fitting portion 25, The movement of the conduit ring member 1 is restricted by the wall portion 13, and the male fitting portion 7 is not pulled out of the female fitting portion 25.

In this state, the outer peripheral surface of the water blocking member 3 is in close contact with the inner surface of the female fitting portion 25. That is, the water blocking member 3 can fill the gap between the male fitting portion 7 and the female fitting portion 25. For this reason, it is possible to prevent moisture from entering the connection structure 20 from the outside.

As described above, according to the first embodiment, since the conduit ring member 1 is disposed on the outer periphery of the male fitting portion 7, the attachment is easy and the attachment state can be easily visually recognized. . In addition, since the connection portions 17a and 17b are formed at both ends of the conduit ring member 1, by fitting the fitting portions 19 of the connection portions 17a and 17b, the conduit member ring member 1 is formed into an annular shape. Can be For this reason, the conduit ring member 1 does not come off the male fitting portion 7.

The circumferential length of the conduit ring member 1 can be adjusted by changing the fitting length of the fitting portions 19 of the connection portions 17a and 17b. For this reason, the dimensional error of the male fitting portion 7 and the male fitting portion 7 of a plurality of sizes can be appropriately applied. In particular, even when applied to a large-diameter male fitting portion 7 having large dimensional variations during manufacture, the conduit ring member 1 can function stably.

Although not shown in the drawings, the connecting portions 17a and 17b have slits along the circumferential direction substantially at the center in the tube axis direction, and the fitting portions 19 of the connecting portions 17a and 17b are separated into a plurality in the tube axis direction. May be used. Thus, each fitting part 19 of connection part 17a, 17b may not be one place, and may be multiple places.

In addition, since the ring member 1 for conduit tube can slide in the ring member moving portion 21, when pushing the male fitting portion 7 into the female fitting portion 25, the ring member 1 for conduit tube is moved by the ring member The claw portion 9 can be deformed while being slid by the portion 21. Further, since the thickness of the reduced diameter portion 11 is relatively thin with respect to the claw portion 9, the diameter of the conduit ring member 1 can be reduced by easily deforming the claw portion 9 from the base side. For this reason, the connection of the male fitting part 7 and the female fitting part 25 is easy.

Further, since the thickness of the tip end portion of the claw portion 9 is relatively thick with respect to the diameter-reduced portion 11, the rigidity of the claw portion 9 can be increased. Therefore, the buckling of the claws 9 can be suppressed, and the male fitting portion 7 can be reliably prevented from coming off from the connected state of the male fitting portion 7 and the female fitting portion 25. it can.

Further, since the water blocking member 3 is disposed closer to the base than the electric pipe tube ring member 1, when the male fitting portion 7 is inserted into the female fitting portion 25, the insertion resistance of the water blocking member 3 is received. It can be difficult. Further, even if the lubricant is applied to the water blocking member 3, the lubricant does not adhere to the conduit ring member 1.

Second Embodiment
Next, a second embodiment will be described. FIG. 10 is a perspective view showing a conduit ring member 1f according to the second embodiment. In the following description, components having the same functions as in the first embodiment are given the same reference numerals as in FIGS. 1 to 9, and redundant description will be omitted.

In the ring member 1f for electric conduit tube, although the claw portions 9 are separated from each other in the circumferential direction via the slits 8 and arranged in the same manner as the ring member 1 for electric conduit tube, the cut 39 is formed in the reduced diameter portion 11. Differ in that

A predetermined number of notches 39 are formed at predetermined intervals in the circumferential direction at the edge of the reduced diameter portion 11 (the end opposite to the claw 9). The cuts 39 are provided at predetermined positions between the claws 9.

In the illustrated example, every other notch 39 is formed between the claws 9, but the invention is not limited thereto. The slits 39 may be arranged between all the claws 9 or may be arranged at intervals of two or more between the claws 9.

According to the second embodiment, the same effect as that of the first embodiment can be obtained. Further, by forming the notches 39 at the end of the reduced diameter portion 11 and in the circumferential direction between the claws 9, deformation of the claws 9 becomes easy. Therefore, the insertion resistance at the time of inserting the male fitting portion 7 into the female fitting portion 25 can be reduced.

Third Embodiment
Next, a third embodiment will be described. FIG. 11 is a perspective view showing a conduit ring member 1 a according to the third embodiment. FIG. 11 shows a state in which the release paper is peeled off and the adhesive layer is exposed.

The conduit ring member 1a has substantially the same configuration as the conduit ring member 1, but the connection portions 17a and 17b are different. An adhesive layer having a release paper is formed on the connection portions 17a and 17b.

Thus, in the conduit ring member 1a, the fitting portion 19 of the connection portion 17a is:
An adhesive layer 18 having release paper is formed facing outward in the central direction, and an adhesive layer 18 having release paper is formed inwardly in the central direction of the fitting portion 19 of the connection portion 17b. Be done. By peeling off the release paper of each of the fitting portions 19, the connection portion 17a and the connection portion 17b can be made to face each other and fitted, and the conduit ring member 1a can be formed in an annular shape.

According to the third embodiment, the same effect as that of the first embodiment can be obtained. Thus, each fitting part 19 of connection part 17a, 17b may not be one place, and may be multiple places.

Fourth Embodiment
Next, a fourth embodiment will be described. FIG. 12 is a perspective view showing a conduit ring member 1b according to the fourth embodiment. The conduit ring member 1b has substantially the same configuration as the conduit ring member 1a, but the embodiments of the connection portions 17a and 17b are different.

In the same manner as described above, in the connection portions 17a and 17b, slits 81 are formed along the circumferential direction substantially at the center of the length in the tube axis direction, and the fitting portions 19 of the connection portions 17a and 17b are in the tube axis direction Are separated into In the illustrated example, the fitting portions 19 of the connection portions 17a and 17b are divided into two in the tube axis direction, and formed so as to face in the opposite direction to the central direction so as to face each other through the slits. Be done. Here, in order to fit the connection portions 17a and 17b having the fitting portions 19 separated from each other through the slits 81, the slits 81 are provided in any of the connection portions 17a and 17b. If it becomes possible to fit both, it is possible to provide the slit 81 in both 17a and 17b.

One separated fitting portion 19 of the connection portion 17a is formed outward in the central direction, and the other fitting portion is formed inward in the central direction. Similarly, the separated one fitting portion 19 of the connection portion 17b is formed inward in the central direction, and the other fitting portion is formed outward in the central direction. Here, each fitting part 19 of the connection part 17a and the connection part 17b is formed in the surface which mutually faces.

In the conduit ring member 1b, the fitting portion 19 directed inward in the central direction of the connection portion 17a and the fitting portion 19 directed outward in the central direction of the connection portion 17b are engaged with each other, The fitting portion 19 directed outward in the central direction of the connection portion 17a and the fitting portion 19 directed inward in the central direction of the connection portion 17b are fitted to face each other. By fitting the respective fitting portions 19 so as to face each other, the conduit ring member 1 b can be made annular.

According to the fourth embodiment, the same effect as that of the first embodiment can be obtained. Also, by providing fitting portions in opposite directions to each of the connection portions 17a and 17b and fitting them together, the annular state of the conduit ring member 1b is reliably maintained, and the intention of the fitting portion 19 is not intended. It is possible to suppress the detachment.

Fifth Embodiment
Next, a fourth embodiment will be described. FIG. 13 is a perspective view showing a conduit ring member 1c according to the fifth embodiment. The conduit ring member 1c has substantially the same configuration as the conduit ring member 1b, but differs in that a slide guide 29 is provided.

The slide guide 29 is formed at a portion where the claw portion 9 of the electric pipe tube ring member 1c is not provided. That is, the slide guides 29 are formed at predetermined intervals in the circumferential direction of the conduit ring member 1c. In the illustrated example, the claws 9 and the slide guides 29 are alternately arranged, but the slide guides 29 may be formed with a predetermined number and a predetermined interval with respect to the claws 9.

The slide guide 29 projects from the reduced diameter portion 11 toward the other end in parallel to the tube axis direction. That is, the slide guide 29 is not formed so as to expand in diameter as it goes from the reduced diameter portion 11 to the other end like the claw portion 9 but along the axial direction of the conduit ring member 1c. It is formed substantially in parallel.

The slide guide 29 is formed in a predetermined shape. For example, in the illustrated example, the slide guide 29 is rectangular. The slide guide 29 may be in the shape of a trapezoid whose width decreases toward the tip. That is, the shape of the slide guide 29 may be a rectangular or trapezoidal planar surface.

FIG. 14 is a side view of the ring member mounting structure 10a, and FIG. 15 is a cross-sectional view taken along the line CC of FIG. The ring member mounting structure 10 a is a mounting structure in which the conduit member ring member 1 c is attached to the male fitting portion 7 of the conduit 5.

As described above, the slide guide 29 projects parallel to the axial direction from the reduced diameter portion 11 toward the other end. Therefore, when the conduit ring member 1c is attached to the male fitting portion 7, in the ring member moving portion 21, the slide guide 29 protrudes in parallel from the diameter reducing portion 11 in the tube axial direction.

When the conduit ring member 1 c is attached to the ring member moving portion 21, the conduit ring member 1 c can move between the wall portions 13 formed at both ends of the ring member moving portion 21. Further, the movement of the conduit ring member 1 c is restricted by the slide guide 29 and the wall portion 13. At this time, since the slide guide 29 is formed substantially in parallel to the tube axis direction, the tip end of the slide guide 29 does not get over the wall portion 13 and can be surely hit against the wall portion 13.

According to the fifth embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the slide guide 29 is formed, the conduit ring member 1 c can be stably slid and moved without tilting of the conduit ring member 1 c at the time of sliding. In addition, even if the diameter of the end of the claw portion 9 is expanded to the height of the wall portion 13 or more, the slide guide 29 reliably moves the conduit ring member 1c without increasing the height of the wall portion 13. Since the range can be regulated, since the conduit ring member 1 c does not go over the wall portion 13, the conduit ring member 1 c is not detached from the conduit 5.

Sixth Embodiment
Next, a sixth embodiment will be described. FIG. 16 is a perspective view showing a conduit ring member 1 d according to the sixth embodiment. The conduit ring member 1d has substantially the same structure as the conduit ring member 1c, but the form of the connecting portions 17a and 17b is other than the design difference between the arrangement distance and the number of the slide guides 29 and the claws 9. It is different.

In the conduit ring member 1d, a plurality of convex locking projections 16a are formed in the circumferential direction with a predetermined distance apart as fitting portions of the connection portion 17a. By engaging the convex shaped locking projection 16a with the locking slit 16b of the connecting portion 17b formed at a predetermined distance from each other at a position corresponding to the locking projection 16a, both can be fitted. it can.

Here, the locking projection 16a has a shape in which the diameter of the tip of the convex portion of the shaft member is enlarged, and this enlarged diameter portion locks when the locking projection 16a and the locking slit 16b are fitted. The shaft member of the projection 16a is supported by the periphery of the locking slit 16b. When the two are fitted, the locking projection 16a and the locking slit 16b are aligned with each other with a slight gap in the tube axis direction, and then the locking projection 16a is fitted into the locking slit 16b. The connection portions of the conduit ring members 1d can be connected to each other.

The circumference of the locking slit 16b may be tapered. Here, the length in the circumferential direction of the ring member can be adjusted by mutually shifting and fitting the fitting positions of the plurality of formed locking protrusions 16 a and the locking slits 16 b.

Seventh Embodiment
Next, a seventh embodiment will be described. FIG. 17 is a perspective view showing a conduit ring member 1e according to a seventh embodiment. The conduit ring member 1e has substantially the same configuration as the conduit ring member 1c, but the form of the slide guide 29 is different.

The slide guide 29 of the conduit ring member 1e is formed in a substantially U-shape. That is, the slide guide 29 is formed with a slit 82 from the side of the reduced diameter portion 11 toward the tip end side. For this reason, the slide guide 29 has a frame-like shape that is open on the side of the reduced diameter portion 11 and connected in the circumferential direction on the tip end side. Note that the slit 82 from the side of the reduced diameter portion 11 does not have to be substantially rectangular like a substantially U-shaped, for example, the slide guide 29 is formed in a U-shaped or V-shaped frame shape It is also good.

FIG. 18 is a side view of the ring member attachment structure 10b, and FIG. 19 is a cross-sectional view taken along the line DD of FIG. The ring member mounting structure 10 b is a mounting structure in which the conduit ring member 1 e is attached to the male fitting portion 7 of the conduit 5.

Even in this case, the slide guide 29 protrudes parallel to the tube axis direction from the diameter reducing portion 11 to the other end. Therefore, when the conduit ring member 1 d is attached to the male fitting portion 7, the slide guide 29 in the straight tubular ring member moving portion 21 protrudes in parallel in the axial direction of the tube from the reduced diameter portion 11. Therefore, the movement of the conduit ring member 1 d is restricted by the slide guide 29 and the wall portion 13.

According to the seventh embodiment, the same effect as that of the fifth embodiment can be obtained. Further, the slit 82 is formed on the slide guide 29 from the side of the reduced diameter portion 11 so that the frame-shaped slide guide 29 slightly expands in diameter when a pressing force is applied to the claw portion 9. As a result, the circumferential length of the reduced diameter portion 11 including the base portions of both the claw portion 9 and the slide guide 29 becomes slightly larger, and deformation of the claw portions 9 on both sides of the slide guide 29 becomes easy. Therefore, since the claw portion 9 can be easily deformed and the diameter of the conduit ring member 1d can be reduced, the connection between the male fitting portion 7 and the female fitting portion 25 is easy.

Eighth Embodiment
Next, an eighth embodiment will be described. FIG. 20 is a cross-sectional view of a ring member mounting structure 10c according to an eighth embodiment. In addition, in the ring member attachment structure 10a, although the example which attached the ring member 1e for conduits is shown, you may attach the ring member for other conduits.

The ring member mounting structure 10c has substantially the same structure as the ring member mounting structure 10b, but the shape of the ring member moving portion 21 of the male fitting portion 7 is different. The ring member moving part 21 sandwiched by the pair of wall parts 13 is composed of a large diameter part 31, a slope part 33 and a small diameter part 35 in order from the front end side of the conduit 5. That is, the large diameter portion 31 is formed on the tip end side of the electric wire tube 5 (male fitting portion 7) of the ring member moving portion 21, and the large diameter portion 31 of the electric wire tube 5 (male fitting portion 7) of the ring member moving portion 21. A small diameter portion 35 is formed on the base side, and an inclined surface 33 is formed between the large diameter portion 31 and the small diameter portion 35. The outer diameter of the large diameter portion 31 is smaller than that of the wall portion 13 and larger than that of the small diameter portion 35.

As described above, the conduit ring member 1 e can move between the wall portions 13 formed at both ends of the ring member moving portion 21. The conduit ring member 1 e is attached to the large diameter portion 31 of the ring member moving portion 21. Therefore, when the conduit ring member 1 e is attached to the male fitting portion 7, the slide guide 29 protrudes in parallel in the axial direction of the tube from the reduced diameter portion 11 on the outer periphery of the large diameter portion 31. As described above, the reduced diameter portion 11 which is the side end portion of the conduit ring member 1 e is attached so as to be positioned on the large diameter portion 31 and slides on the large diameter portion 31.

When connecting with the female fitting portion 25 using the ring member mounting structure 10c, as described above, when pushing the male fitting portion 7 into the female fitting portion 25, the conduit member ring member 1e is a ring member Slide movement is performed in the moving unit 21. That is, the conduit ring member 1 e moves in the direction of the small diameter portion 35. At this time, at least a part of the reduced diameter portion 11 is located at the large diameter portion 31 because the length of the conduit ring member 1 e is longer than the small diameter portion 35.

When the male fitting portion 7 is further pushed into the female fitting portion 25, the claw portion 9 is pressed by the ring member fitting portion 27 of the female fitting portion 25. As a result, the claw portion 9 of the conduit ring member 1e is deformed so as to reduce its diameter. At this time, since the claws 9 of the conduit ring member 1e are positioned at the small diameter portion 35, deformation is facilitated.

According to the eighth embodiment, the same effect as that of the seventh embodiment can be obtained. Further, by forming the large diameter portion 31, the inclined surface portion 33, and the small diameter portion 35 in the male fitting portion 7 and arranging the conduit ring member 1e in the large diameter portion 31, rattling of the conduit ring member 1e Can be prevented. Further, by moving and deforming the conduit ring member 1e to the small diameter portion 35, the claw portion 9 can be easily deformed and the diameter of the conduit ring member 1e can be reduced. And the female fitting portion 25 can be easily connected.

Ninth Embodiment
Next, a ninth embodiment will be described. FIG. 21 is a perspective view showing a conduit ring member 1g according to a ninth embodiment. The conduit ring member 1g has substantially the same configuration as the conduit ring member 1e, but the form of the claw portion 9 is different.

A thin-walled portion 37 thinner than the outer edge portion is formed inside the outer edge portion of the claw portion 9 on the outer surface side of the pawl portion 9. That is, the inner thickness of the outer edge portion is formed thinner than the thickness of the outer edge portion of the nail surface of the nail portion 9. Thus, by forming the thickness of the inside of the outer edge portion thinner than the outer edge portion of the claw surface of the claw portion 9, the claw portion 9 can be easily deformed. In addition, although the ring member 1g for conduits formed the thin part 37 with respect to the nail | claw part 9 of the ring member 1e for conduits, it can also be applied to the ring member for other conduits. The thin portion 37 may be formed on the outer surface side of the claw portion 9 or may be formed on the inner surface side.

According to the ninth embodiment, the same effect as that of the seventh embodiment can be obtained. Further, by forming a thin portion 37 thinner than the outer edge portion on the outer surface side of the claw portion 9, insertion resistance when inserting the male fitting portion 7 into the female fitting portion 25 is reduced. Can. Also, even when the female fitting portion 25 and the male fitting portion 7 are subjected to a pulling force, the thickness of the outer edge portion of the claw surface is formed thicker than the inside, so that the claw portion 9 is buckled. I have not.

Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention is not influenced by the above-described embodiments. It is apparent that those skilled in the art can conceive of various changes or modifications within the scope of the technical idea described in the claims, and they are naturally also within the technical scope of the present invention. It is understood that it belongs.

For example, it goes without saying that each configuration in each embodiment can be combined with each other. Therefore, the combined contents of the technically combinable embodiments are included. For example, the various structures of the slide guide and the various structures of the claws disclosed in the present invention can be combined as appropriate, or the various structures of the claws can be further combined with this.

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g ......... Conduit ring member 3 ......... Water blocking member 5 ... Conduit tube 7 ... ... Male fitting portion 8, 81, 82 ... ...... Slit 9 ...... 爪 10, 10a, 10b, 10c ...... リ ン グ Ring member mounting structure 11 ...... 縮 部 13 ...... Wall 15 部 Circumferential end 16a ...... Locking Projection 16b: Locking slit 17a, 17b: Connection part 18: Adhesive layer 19, 19a: Fitting part 20: Connection structure 21: Ring member moving part 22: Saw Blade-like groove 23a: Outer surface tapered portion 23b: Inner surface tapered portion 24: Blade 24a: Mating surface 24b: Slope 25: Female fitting portion 27: Ring member fitting Joint portion 29: Slide guide 31: Large diameter portion 33: Slope portion 35: Small diameter portion 37: Thin portion 39 ...... cut

Claims (20)

1. It is a retaining ring for conduits provided with a claw portion and a reduced diameter portion,
   It has a tapered portion or a sloped portion which decreases in diameter from the tip end of the claw portion toward the reduced diameter portion in the tube axial direction cross section,
   One end side connecting portion and the other end side connecting portion are formed at both end portions in the circumferential direction of the reduced diameter portion, and the fitting portions of the respective connecting portions are fitted to each other. Conduit ring member.
2. The circumferential length adjustment of the ring member by mutually shifting and fitting the fitting positions of the fitting portions formed on the opposing surfaces of the one end side connecting portion and the other end side connecting portion with each other. The ring member for a conduit tube according to claim 1, wherein
3. The first end side connection portion and the other end side connection portion face each other, and the opposing surfaces of the respective connection portions are fitted to face each other toward either inward or outward in the center direction. The ring member for a conduit tube according to claim 1, wherein an engaging portion is formed, and the engaging portions are engaged with each other.
4. The fitting portion of the one end side connection portion is formed to be separated at a plurality of places toward the center direction outward, and the fitting portion of the other end side connection portion is inward in the center direction The ring member for a conduit tube according to claim 1, wherein the ring member is formed to be separated at a plurality of points toward each other, and the respective fitting portions are made to face each other.
5. The fitting portion of the one end side connection portion is formed separately at a plurality of places in the fitting portion facing outward in the central direction and the fitting portion facing inward in the central direction, and the other end The fitting portion of the side connection portion is separated at a plurality of locations in a fitting portion facing inward in the center direction and a fitting portion facing outward in the center direction, and 2. The ring member for conduit according to claim 1, wherein the fitting portion facing outward and the fitting portion facing inward in the center direction are made to face each other and fitted.
6. The fitting portion facing outward in the central direction and the fitting portion facing inward in the central direction of each of the one end side connection portion and the other end side connection portion are formed in the circumferential direction. A saw blade-shaped groove group, a large number of minute projections, an adhesive layer having a release paper, or a structure of any one of a locking protrusion and a locking slit. The conduit ring member according to claim 1.
7. The fitting portion facing outward in the central direction and the fitting portion facing inward in the central direction of each of the one end side connection portion and the other end side connection portion are formed in the circumferential direction. A sawtooth groove group,
   6. The ring member for electric conduit tube according to any one of claims 3 to 5, wherein an angle of a tip of each blade constituting the saw blade-like groove is a right angle or an acute angle.
8. The electric wire tube according to claim 1, characterized in that a slide guide projecting in parallel in the axial direction of the tube from the reduced diameter portion is formed in a portion where the claw portion is not provided on the circumference of the reduced diameter portion. Ring member.
9. The slide guide is formed in a predetermined shape substantially in parallel along the tube axis direction, and the slide guide is formed at a predetermined number and a predetermined distance from the claw portion in the circumferential direction of the ring member A conduit ring member according to claim 8, characterized in that:
10. 9. The ring member for a conduit tube according to claim 8, wherein the shape of the slide guide is formed into a rectangular shape or a trapezoidal shape.
11. 9. The ring member for a conduit tube according to claim 8, wherein the shape of the slide guide is formed into a substantially U-shaped, U-shaped or V-shaped frame shape.
12. 2. The ring member according to claim 1, wherein a thickness of an inside of the outer edge portion is formed thinner than a thickness of an outer edge portion of a nail surface of the nail portion.
13. The claw portion has a tapered shape in which the diameter decreases toward the reduced diameter portion, the taper angle on the outer surface side of the claw portion is different from the taper angle on the inner surface side, and the thickness of the tip of the claw portion is The ring member for a conduit tube according to claim 1, wherein the ring member is thicker than a thickness of the reduced diameter portion.
14. The claw portion has a tapered shape in which the diameter decreases toward the reduced diameter portion, the taper angle on the outer surface side of the claw portion is the same as the taper angle on the inner surface side, and the thickness of the claw portion is The ring member for a conduit tube according to claim 1, wherein the ring member is thicker than a thickness of the reduced diameter portion.
15. The ring member for a conduit tube according to claim 1, wherein a predetermined number of cuts are provided at predetermined intervals in a circumferential direction at an edge of the reduced diameter portion at predetermined positions between the claws.
16. 2. The ring member for conduit according to claim 1, wherein the ring member is made of at least one of ABS resin, high density PE, polymer alloy of PP resin and ABS resin, or polymer alloy of PC resin and ABS resin.
17. It is the attachment structure where the ring member for conduits of Claim 1 was attached to a male fitting part, Comprising:
    The male fitting portion is
    A pair of wall portions spaced apart in the axial direction of the tube;
    And a ring member moving portion forming a substantially cylindrical peripheral surface sandwiched between the wall portions,
    The male fitting portion is characterized in that the conduit ring member is attached to the ring member moving portion so as to be able to move between the wall portions formed at both ends of the ring member moving portion. Attachment structure of the ring member for conduits to a ring member attachment part.
18. It is the attachment structure where the ring member for conduits of Claim 1 was attached to a male fitting part, Comprising:
    The male fitting portion is
    A pair of wall portions spaced apart in the axial direction of the tube;
    And a ring member moving part sandwiched between the wall parts,
    The ring member moving portion includes a large diameter portion formed on the tip side of the male fitting portion, a small diameter portion formed on the base side of the male fitting portion, the large diameter portion, and the small diameter portion And a slope formed between the
    The male member characterized in that the conduit ring member is attached to the large diameter portion of the ring member moving portion so as to be able to move between the wall portions formed at both ends of the ring member moving portion. Attachment structure of the ring member for conduits to the ring member attachment part of a type | mold fitting part.
19. A method of using the conduit ring member according to claim 8 attached to a male fitting portion,
    The male fitting portion is
    A pair of wall portions spaced apart in the axial direction of the tube;
    And a straight tubular ring member moving unit sandwiched between the wall portions,
    The conduit ring member is attached to the ring member moving portion so as to be able to move between the wall portions formed at both ends of the ring member moving portion,
    A method of using a ring member, characterized in that the conduit ring member is used so that the movement of the conduit ring member is restricted by the slide guide and the wall portion.
20. The fitting position of the circumferential direction of the said fitting part formed in the opposing surface of the said one end side connection part and the said other end side connection part mutually shifted and fitted using the ring member for conduits of Claim 2. And adjusting the circumferential length of the ring member by fitting the ring member to the conduit.

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