JPH0632744Y2 - Flexible pipe joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is made long by combining a desired number of annular members used in, for example, a conduit tube and connecting the band-shaped projections to each other. The present invention relates to a flexible pipe joint.

[Conventional technology]

Conventionally, a steel pipe or a straight plastic pipe has been used as a tubular body used for a conduit tube or the like. However, these pipes have poor flexibility, and steel pipes, etc. cannot be used in places where the pipes are intricate unless bender bending is performed in the field, so in recent years corrugated plastic pipes with corrosion resistance and flexibility have been used. It has come to be used.

However, there is a problem that any of these pipes must be cut to adjust the length when piping, and in order to solve such a problem, the present inventors have a flexibility and We proposed a flexible tube whose length can be easily adjusted without cutting it, and filed a utility model registration application (see Japanese Utility Model Application No. 62-132720).

That is, as shown in FIGS. 4 and 5, the flexible tube body devised by the present inventors has a large diameter ring portion 11 and a small diameter ring portion.
A plurality of annular members, which are concentrically and continuously connected to each other, and have band-shaped projections 13A and 13B circumferentially formed at desired intervals on the inner peripheral edge of the large-diameter ring portion and the outer peripheral edge of the small-diameter ring portion. 10 Mutually fit the small-diameter ring portion 12 of one annular member and the large-diameter ring portion 11 of the other annular member, and rotate in the opposite direction in the circumferential direction so that the band-shaped protrusions 13B and 13A of each ring portion It is a flexible tube body 9 which is connected by being locked to each other and is elongated.

[Problems to be solved by the device]

The flexible tube body 9 is composed of a large number of annular members 10 constituting the tube body.
However, since the small-diameter ring portion 12 and the large-diameter ring portion 11 of the adjacent annular members are fitted and rotated so that the belt-like projections are engaged and connected, the annular member is rotated in the opposite direction. By removing the desired number of members to shorten the length of the pipe, or by further connecting a new annular member 10, a longer pipe can be obtained, and the length of the pipe can be set to an arbitrary length. However, when connecting long flexible pipes to each other, the small diameter of the annular member that constitutes the end of one flexible pipe 9 can be adjusted. The ring portion 12 and the large-diameter ring portion 11 of the annular member forming the end portion of the other flexible tube body 9 are fitted to each other, and the entire one flexible tube body is rotated in the opposite direction in the circumferential direction, It is necessary to connect the strip-shaped projections of the respective ring parts to each other by locking them, and it is necessary to rotate the entire long tube like this. The work is very difficult and requires a long time, and it was extremely difficult to connect the long pipes to each other especially at the bent portion. Further, in the case where the end portions of the long flexible tube body 9 to be connected are the small-diameter ring portions 12 in which the strip-shaped projections are formed on both outer peripheral edge portions,
It is necessary to reverse the direction of one long pipe and connect so that the small diameter ring part 12 at the end of one long pipe and the large diameter ring part 11 at the end of the other long pipe are fitted. Yes, it was a very laborious task.

[Means for solving the problem]

The present invention has been made as a result of intensive studies in view of the above-mentioned points, and an object of the present invention is to rotate long flexible pipes 9 with each other by rotating one pipe as a whole or by reversing the direction. It is to provide a flexible pipe joint that can be connected relatively easily without any change.

That is, according to the present invention, the large-diameter ring portion and the small-diameter ring portion are concentrically integrally connected to each other, and the large-diameter ring portion inner peripheral edge portion and the small-diameter ring portion outer peripheral edge portion are circumferentially striped at desired intervals. A plurality of annular members formed with protrusions fit the small-diameter ring portion of one annular member and the large-diameter ring portion of the other annular member, and rotate them in the circumferential direction in the opposite direction. For connecting the elongated flexible pipes, which are connected to each other by locking the strip-shaped projections of
A flexible pipe joint, in which a male screw portion (1A) is formed on the outer circumference of one end edge portion, and a strip shape in the circumferential direction at the desired interval on the outer or inner circumference of the other end edge portion. A male annular member (1) having a protrusion and a thick central portion, and a male screw portion (1) of the male annular member (1) on the inner periphery of one end edge portion.
A female screw part (2A) that is screwed with A) is formed, and belt-shaped projections are formed in the circumferential direction at desired intervals on the outer or inner circumference of the other edge, and the central part is thick. The flexible tubular joint is characterized in that the female annular member (2) which is a meat is connected by being screwed with the screw portion.

As the material of the annular member constituting the flexible pipe joint according to the present invention, any material such as plastic or metal may be used, but if rigid plastic or metal is used, a flexible flexible pipe joint should be obtained. Can be done.

Also, the manufacture of the annular member that constitutes this flexible tubular body joint is, for example, after molding plastic or metal,
The threaded portion may be formed by cutting or the like, or may be manufactured only by cutting.

Next, an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 (a) is a partially cutaway explanatory view showing an example of a male annular member and a female annular member constituting a flexible pipe joint according to the present invention. In the male annular member 1, a male screw portion 1A is formed on the outer periphery of one end edge portion, and band-shaped projections 1B are formed on the outer periphery of the other end edge portion in the circumferential direction at desired intervals. , Central part 1C is thick. Also, the female annular member 2
Has a female screw portion 2A which is screwed with the male screw portion 1A of the male annular member 1 on the inner circumference of one end edge portion, and is formed at a desired interval on the outer circumference of the other end edge portion. A band-shaped protrusion 2B is formed in the circumferential direction, and the central portion 2C is thick.

FIG. 1B shows the male annular member 1 and the female annular member 2.
FIG. 2 is a partially cutaway explanatory view of a flexible tubular joint formed by connecting and with a female annular member 2 on a male screw portion 1A of a male annular member 1.
The male annular member 1 and the female annular member 2 are connected by screwing the female screw portion 2A. That is, if the number of threads of the male screw portion 1A and the female screw portion 2A screwed to each other is set to be sufficiently large, the female annular member is completely screwed and then appropriately loosened. It is possible to rotate 2 to the desired position with respect to the male annular member 1.

Further, the strip-shaped projections 1B and 2B formed on the outer circumferences of the other end edge portions of the annular members 1 and 2 are large-diameter ring portions 11 of the annular member 10 forming the end portion of the flexible tube body 9. Using a flexible tubular joint having the shape shown in FIG. 1 (b), the end portion is a large diameter ring portion 11, and a strip-shaped projection is formed on the inner peripheral edge portion. The formed long flexible tube bodies 9 can be connected to each other. That is, for example, the other end 1B of the male annular member 1 is fitted to the end of the flexible tubular body 9A composed of the large-diameter ring portion 11 and is rotated reversely in the circumferential direction so that the respective band-shaped projections are locked to each other. By connecting the flexible tubular body joint to the flexible tubular body 9A first, and then the female annular member 2 is rotationally screwed to the male annular member 1 to a desired position. After fitting the other end 2B of 2 to the end of the flexible tubular body 9B composed of the large-diameter ring portion 11, the female annular member 2
The flexible tube joints and the flexible tube body 9B are connected by rotating each other and locking the respective band-shaped projections to each other, whereby the flexible tube bodies 9A and 9B are connected.

FIG. 2 is a partially cutaway explanatory view showing another example of the flexible pipe joint according to the present invention, wherein one end edge portion 1A of the male annular member 1 and one end of the female annular member 2 are shown. The edge portion 2A is connected in the same manner as in the case of FIG. Further, the strip-shaped projections 1B and 2B formed on the inner circumferences of the other end edge portions of the annular members 1 and 2 are small-diameter ring portions of the annular member 10 forming the end portion of the flexible tube body 9. It is designed to fit with 12, and using a flexible tubular joint of this shape, the end is a small-diameter ring portion 12 and a long protrusion having a band-shaped projection formed on its outer peripheral edge. The flexible tube bodies 9 can be connected to each other.

FIG. 3 is a partially cutaway explanatory view showing still another example of the flexible pipe joint according to the present invention, wherein one end edge portion 1A of the male annular member 1 and one of the female annular members 2 are shown. The edge portion 2A is connected in the same manner as in the case of FIG. A band-shaped projection 1B is formed on the outer periphery of the other end of the male annular member 1, and a band-shaped projection 2B is formed on the inner periphery of the other end of the female annular member 2. The flexible tubular joint of this shape is used to form a long flexible tubular body 9 having a large-diameter ring portion 11 at its end and a band-shaped projection formed at its inner peripheral edge. The end is a small-diameter ring portion 12,
It is possible to connect a long flexible tube body 9 having a strip-shaped projection formed on its outer peripheral edge.

[Action]

Since the flexible pipe joint according to the present invention is composed of the male annular member 1 and the female annular member 2 connected by the screwing portion, for example, the other end 1B of the male annular member 1 is to be connected. First, the flexible pipe joint is first connected to the flexible pipe body 9A by fitting the end portion of one flexible pipe body 9A, and rotating in the opposite direction in the circumferential direction to lock the respective strip-shaped projections to each other. Then, with the female annular member 2 being rotated with respect to the male annular member 1 to the desired position, the other end 2B of the female annular member 2 is bent to the other end. The flexible tubular bodies 9A and 9B are connected by fitting the end portion of the flexible tubular body 9B and then rotating the female annular member 2 to connect the flexible tubular body joint and the flexible tubular body 9B. . That is, it is possible to connect these flexible tubular bodies 9A and 9B without rotating them.

When both ends of the flexible tube body 9 to be connected are large-diameter ring portions, the band-shaped projections 1B and 2 are formed on the outer circumference of the end edge portion connected to the flexible tube body 9. Depending on the shape of the end portion of the flexible pipe, such as using a flexible pipe joint (see FIG. 1 (b)), a flexible pipe joint having a shape suitable for this can be selected. That is, even if the end portions of the flexible pipes to be connected have the same shape, it is possible to connect them as they are without having to reverse the direction of one of these flexible pipes as in the conventional case. It is possible.

〔Example〕

Next, the present invention will be described more specifically by way of examples. Cutting the iron block, as shown in Fig. 1 (a),
Inner diameter 130 mm, length 100 mm, male screw part 1A (mountain height 1.5 mm) is formed on the outer circumference of one end edge, and a strip shape of 2 mm height is formed on the outer circumference of the other end edge. A male annular member 1 on which a protrusion 1B is formed, and a female screw portion 2A that is screwed into the male screw portion 1A are formed on the inner circumference of one end edge portion thereof.
A female annular member 2 having a strip-shaped projection 2B having a height of 2 mm formed on the outer circumference of the other end was manufactured. Thereafter, one end (1A) of the male annular member 1 and one end (2A) of the female annular member 2 are screwed together to form a flexible pipe joint (length 170 mm) shown in FIG. 1 (b). )was gotten.

[Effect of device]

By using the flexible tube joint of the present invention, it is possible to connect long flexible tubes without rotating each other. Moreover, it is possible to select a flexible pipe joint having a shape suitable for this according to the shape of the end of the flexible pipe to be connected, so that the ends of the flexible pipe to be connected are the same. Even with such a shape, it is possible to connect the flexible tubular bodies as they are without having to reverse the direction of one of the flexible tubular bodies as in the conventional case.

[Brief description of drawings]

FIG. 1 (a) is a partial cutaway explanatory view showing one embodiment of a male annular member and a female annular member constituting a flexible pipe joint according to the present invention, and FIG. 1 (b) shows these male annular members. Member and female annular member are connected to each other to explain a partial incision of a flexible pipe joint, and FIGS. 2 and 3 are partial incision explanations showing other embodiments of the flexible pipe joint according to the present invention. FIG. 4, FIG. 5 and FIG. 5 are perspective views of a conventional flexible tube body and an annular member which is a component thereof. 1 ... Male annular member, 1A ... Male screw part, 1B ... Band-like protrusion, 1C ... Center part, 2 ... Female annular member, 2A ... Female screw part, 2B ... Band-like protrusion, 2C: central part, 9: flexible tube, 10: annular member, 11: large diameter ring part, 12: small diameter ring part, 13A, 13B: strip-shaped projection.

Claims (1)

[Scope of utility model registration request] 1. A large-diameter ring portion and a small-diameter ring portion are concentrically and integrally connected to each other, and a large-diameter ring portion inner peripheral edge portion and a small-diameter ring portion outer peripheral edge portion are circumferentially banded at desired intervals. A plurality of annular members formed with protrusions fit the small-diameter ring portion of one annular member and the large-diameter ring portion of the other annular member, and rotate them in the circumferential direction in the opposite direction. Are connected by locking the strip-shaped projections of
A flexible pipe joint for connecting elongated flexible pipes, wherein a male screw portion (1A) is formed on the outer periphery of one end edge portion, and the other end is formed. On the outer circumference or inner circumference of the edge portion, band-shaped projections are formed in a circumferential direction at desired intervals,
A male annular member (1) having a thick central portion, and a female screw portion (1) screwed to the male screw portion (1A) of the male annular member (1) at the inner periphery of one end edge portion ( 2A) is formed, and the outer periphery or inner periphery of the other end edge portion is formed with band-shaped projections in the circumferential direction at desired intervals, and a female annular member (2) having a thick central portion is formed. Is rotatably connected by being screwed with the screw portion.