JP2003028359A - Bend joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bend joint which can be manufactured easily. SOLUTION: This bend joint 10 contains a plurality of bend joint components 12. Each component 12 has a predetermined bending angle. A plurality of projections are formed at predetermined angle intervals in the circumferential direction in the spigot of the component 12. On the other hand, a plurality of recessed parts for accepting the projections are formed at predetermined angle intervals in the socket of the component 12 as well as the projections. A rubber ring accommodating part is formed in the spigot of the component 12. When the bend joint 10 is manufactured, a rubber ring is mounted to the rubber ring accommodating part of each component 12. then the projections of each component 12 are put in the recessed parts. That is to say, the bend joint 10 which has a desired angle and a form (direction) can be manufactured by putting the spigot of the component 12 which has a desired angle selected in the socket.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved pipe joint, and more particularly to a curved pipe joint applied to, for example, tap water pipes.

[0002]

2. Description of the Related Art In the conventional curved pipe joint of this type, a straight pipe is heated and softened and then bent to be finished into a desired angle and shape (direction). In addition, a large number of curved pipe joints with angles and directions that are expected to be sold have been manufactured in advance and stored.

[0003]

However, in most of the prior arts, there is a problem that it takes time to deliver the product because the bending process is performed after receiving the order in most cases. Further, in the case of a curved pipe joint having a special bending angle, it is necessary to manufacture a jig for finely adjusting the angle, and it is not realistic to manufacture the jig individually.

Therefore, a main object of the present invention is to provide a curved pipe joint which can easily provide various angles and directions in a short period of time.

[0005]

SUMMARY OF THE INVENTION The present invention is a curved pipe joint for connecting a plurality of curved pipe joint parts each having a predetermined bending angle to obtain a desired bending angle and direction, each of the parts being , Having a spigot and a socket that can be fitted to each other, at least one protrusion is formed on the outer periphery of the spigot, and a plurality of recesses for receiving the protrusions are formed in the socket at regular intervals. And further forming a rubber ring receiving part,
A curved pipe joint made by selectively using the necessary parts according to the desired angle and direction, attaching a rubber ring to the rubber ring receiving part of each part, and fitting the protrusions of each part into the recesses. is there.

[0006]

The curved pipe joint of the present invention is manufactured by connecting a plurality of curved pipe joint parts. Each curved pipe fitting part
It has a predetermined bending angle. Further, at least one protrusion is provided on the outer circumference of the spigot of the curved pipe joint component. However, in the case of providing a plurality of protrusions, each protrusion is provided at a constant angle or at an interval of an integral multiple of the constant angle in the circumferential direction of the spigot. On the other hand, a plurality of recesses for receiving the projections provided on the spout are provided at the receiving opening of the curved pipe joint component at regular intervals. Further, a rubber ring receiving portion is provided at the outlet. When manufacturing a curved pipe joint, a rubber ring is attached to the rubber ring receiving portion of each component. Then, the projections of the respective parts are fitted into the recesses. Therefore, a curved pipe joint having a desired bending angle can be manufactured by combining desired curved pipe joint parts and fitting the spigot and the receiving port. In addition to the bending angle in the horizontal plane, the angle (direction) in the vertical plane can be selected by selecting the position (joint position) where the projection and the recess are fitted together.
Can also be adjusted (set).

For example, the desired angle of a curved pipe fitting component is
It is set to 90/2 ⁿ degrees (n is an integer of 0 or more). So, for example, 90 degrees, 45 degrees, 22.5 degrees, 1
If curved pipe joint parts having bending angles of 1.25 degrees and 5.625 degrees are prepared, curved pipe joints having various angles can be manufactured by combining these. In addition, inventory management is relatively easy because only several types of curved pipe joint parts are prepared in advance.

[0008]

According to the present invention, curved pipe joint parts having various angles are prepared and the selected curved pipe joint parts are simply fitted to each other. Therefore, a curved pipe joint having a desired angle can be easily formed. Can be manufactured. Moreover, the orientation of the joint can be easily adjusted by the projection provided on the spigot and the recess provided on the receiving opening. That is, curved pipe joints having various angles and directions can be prepared in a short period of time.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a curved pipe joint 10 of this embodiment.
Includes a curved pipe joint component (hereinafter, simply referred to as “component”) 12, and, for example, two straight pipe components 14 are joined via two components 12 that are connected (joined). This part 12
The straight pipe component 14 is formed of a synthetic resin such as vinyl chloride and is used for a tap water pipe or the like. The component 12 is prepared by previously bending the tube axis at a predetermined angle. Specifically, the bending angle of the component 12 shown in FIG. 1 is 45 degrees, and the bending angle is 9 degrees as shown in FIG.
The 0 degree part 12 is also prepared. Further, as will be described later, a component 12 having a bending angle of 22.5 degrees, 11.25 degrees or 5.625 degrees (see FIGS. 5 and 6) is also prepared. That is, the predetermined bending angle can be expressed by Equation 1.

[0011]

Bending angle = 90/2 ⁿ where n is an integer of 0 or more, and in this embodiment, n
= 0, 1, 2, 3, 4.

Referring to FIG. 2, the component 12 includes a spigot 16 and a socket 18, and the spigot 16 and the socket 18 are structured to fit each other. Specifically, as shown in FIG. 3A including the end view of the spigot 16, the spigot 1
6 is a constant angle in the circumferential direction (15 degrees in this embodiment)
A plurality of convex portions (projections) 16a are provided at intervals in each case.

On the other hand, as can be seen from FIG. 2 and FIG. 3B including the end view of the socket 18, the inner circumference of the socket 18 has a constant angle ( In this embodiment, a plurality of recesses 18a are formed at intervals of 15 degrees.
Is formed. The recess 18a is formed at a position that is a predetermined distance from the end of the receiving port 18. Although illustration is omitted, the inner surface shape of the recess 18a is formed to be substantially the same as the outer surface shape of the protrusion 16a. Further, the receiving opening 18 is provided with a receiving portion 18b that mainly receives a rubber ring 20 (see FIG. 2) that plays a role of stopping water at the connecting portion (joining portion).

Although not shown, the straight pipe part 14 also has an inlet 16 and a socket 18 similar to the part 12.

For example, when the curved pipe joint 10 is manufactured, the rubber ring 20 is attached to the receiving portion 18b of the receiving opening 18 of each component 12, as shown in FIG. Subsequently, the spigot 16 of one component 12 and the other component 1 to be joined together
The second receiving port 18 is heated and softened by the heat of about 130 ° C. Then, the outlet 16 of the one component 12 is inserted into the receptacle 18 of the other component 12. Then, as shown in FIG. 4, the protrusion 16a is fitted into the recess 18a. In this way, when the spigot 16 and the receiving port 18 are fitted together, for example, the joined component 12 is immersed in water, and the joint is cooled and solidified. In this way, the plurality of selected parts 12
Are joined together to produce a curved pipe joint 10 having a desired bending angle and direction (shape).

Although not described, the same applies to the case of joining the component 12 and the straight pipe component 14.

Further, at the joint portion, the spigot 14 is restrained from moving in the pipe axis direction by the rubber ring 20 received by the receiving portion 18b. That is, the joining structure (fitting structure) 30 between the protrusion 16a and the recess 18a and the frictional force of the rubber ring 20 prevent the component 12 from coming off. Therefore, it is possible to prevent disengagement due to water pressure or thrust load without providing a docker (registered trademark) (not shown), which is inexpensive.

For example, when the straight pipe parts 14 are joined together by using two parts 12 having an angle of 45 degrees, the curved pipe joint 10 as shown in FIG. 1 can be manufactured. However, a similar curved pipe joint 10 can be manufactured by joining two straight pipe parts 14 using the part 12 having an angle of 90 degrees shown in FIG.

As shown in FIGS. 5 and 6, 90
The bending pipe joint 10 having various bending angles can be manufactured without being limited to the degree. As shown in FIG. 5, for example, using the part 12 having an angle of 45 degrees and the part 12 having an angle of 22.5 degrees, the curved pipe joint 1 having an angle of 67.5 degrees is used.
0 can be produced. Also, as shown in FIG.
With the part 12 having an angle of 11.25 degrees and the part 12 having an angle of 5.625 degrees, the curved pipe joint 10 having an angle of 18.875 degrees can be manufactured.

Further, in the two parts 12 to be joined, by selecting the position (joint position) where the protrusion 16a and the recess 18a are fitted together, the orientation is changed in the joined surface (in the vertical plane) at the joined portion ( It can also be fixed (joined) by providing an inclination angle. That is, as shown in FIG. 7, one component 12 is arranged on a horizontal plane (XY plane), and the other component 12 is inclined at an angle of 15 degrees with respect to the XY plane at every 15 degrees. They can be joined together. That is, the angle in the vertical plane (XZ plane) can be set.

Although not shown in the drawing, since the receiving port 18 is provided with a marked line at a constant angle (15 degrees in this embodiment) in the circumferential direction, the angle in the XZ plane can be easily set. Then, the outlet 16 can be inserted.

Therefore, for example, as shown in FIG. 8, it is possible to manufacture a curved pipe joint 10 having a desired angle and direction by using parts 12 having various angles. In this way, the angle of the joint in the XZ plane, that is, the orientation of the component 12 can also be set (adjusted) with a high degree of freedom.

Further, even when the components 12 are inclined and joined as described above, after the joining, the recesses 18 are formed.
Since the protrusion 16a is locked to the side wall (not shown) of a,
It is possible to prevent the component 12a from rotating due to external force or water pressure.

According to this embodiment, a curved pipe joint having a desired bending angle and direction can be manufactured only by joining parts prepared in advance, so that the manufacturing is easy and the delivery time is short. You can Also, inventory management is relatively easy because only a few types of parts are prepared.
In addition, since a metal fitting such as a docker is unnecessary, it can be provided at a low cost.

The curved pipe joint 10 shown in the above embodiment.
Are merely examples, and various types (angles and directions) of the curved pipe joint 10 can be obtained by selectively combining the components 12.
Needless to say, can be produced.

Further, in the above-described embodiment, the projections 16a and the recesses 18a are provided at intervals of 15 degrees, but the constant angle should not be limited to 15 degrees, and if the angles are set smaller, the inclination angle is smaller. The degree of freedom in selecting the angle can be increased, and conversely, if the angle is set to be larger, the degree of freedom in selecting the tilt angle can be decreased.

Further, in the above-mentioned embodiment, the projections 16a are provided at the gap 16 of the component 12 at intervals of 15 degrees in the circumferential direction, but at least one projection 16a may be provided.
For example, the spigot 16 as shown in FIG.
You may make it prepare the component 12 which has a socket as shown in FIG. In this way, one protrusion 16a is provided on the outlet 16.
When the component 12 having the above is prepared, the direction of the component 12 can be set by the concave portion 18a with which the protrusion 16a is fitted.

However, when there is a problem in strength, that is, when it cannot withstand water pressure or thrust load, as shown in FIGS. 9 (B) and 9 (C), a constant angle ( (15 degrees) or an angle that is an integral multiple thereof, several protrusions 16a may be provided to avoid the problem of strength.

Alternatively, as shown in FIGS. 9D, 9E, and 9F, at least one of the width and size (height) of the protrusion 16a is increased and the width of the protrusion 16a is increased. Also, by increasing at least one of the width and the depth of the recess 18a in accordance with the size, it is possible to solve the problem of strength as described above.

The curved pipe joint of the other embodiment is the same as the above-mentioned embodiment except that the guide groove is formed in the receiving port of the component, and the duplicated description will be omitted. Specifically, FIG.
As shown in 0, the guide groove 18c is formed so as to extend to the end surface 18d of the spigot 18 continuously to the recess 18a. Also,
Although not shown, the guide groove 18c is formed to have a shallower depth than the recess 18a.

Therefore, when joining the parts 12 to each other, the projection 16 provided on the opening 16 of the one part 12 is joined.
a is a guide groove 1 provided in the receptacle 18 of the other component 12.
It is guided by 8c and reaches the recess 18a.

Therefore, as described with reference to FIGS. 7 and 8 in the above embodiment, the component 1 is provided with the inclination angle.
When the two are to be joined together, once the inclination angle is determined, the protrusion 16a is guided to the recess 18a along the guide groove 18c, so that the component 12 can be joined easily.

According to another embodiment, in addition to the effects of the above-mentioned embodiment, there is an effect that it is easier to manufacture.

[Brief description of drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention.

FIG. 2 is an illustrative view showing a structure of a component shown in FIG. 1 embodiment.

FIG. 3 is an illustrative view showing a spigot and a socket of the component shown in FIG. 1 embodiment.

4 is an illustrative view showing a joint structure (fitting structure) of the parts shown in FIG.

FIG. 5 is an illustrative view showing another example of the present invention.

FIG. 6 is an illustrative view showing another example of the present invention.

FIG. 7 is an illustrative view showing a joint portion when the components shown in the embodiment of FIG. 1 are joined at an inclination angle.

FIG. 8 is an illustrative view showing still another example of the present invention.

FIG. 9 is an illustrative view showing another example of a component applied to the present invention.

FIG. 10 is an illustrative view showing one example of a component applied to another embodiment of the present invention.

[Explanation of symbols]

10… Curved pipe joint 12 ... Parts 14 ... Straight pipe parts 16 ... 18 ... 20 ... Rubber ring

Continued front page    F term (reference) 3H019 EA09 EA11                 3H104 JA02 JA12 JB01 JB07 JC09                       JD01 KA04 KB03 KB10 LF05                       LG03 LG22

Claims (2)

[Claims] 1. A curved pipe joint for connecting a plurality of curved pipe joint parts each having a predetermined bending angle to obtain a desired bending angle and direction, wherein each of the parts is a mutually engageable difference. An opening and a receiving opening, at least one protrusion is formed on the outer periphery of the opening, and a plurality of recesses for receiving the protruding portion are formed in the receiving opening at regular intervals. The ring receiving part is formed, and the necessary parts are selectively used according to the desired angle and direction.A rubber ring is attached to the rubber ring receiving part of each part, and the protrusion of each part is set in the recess. A curved pipe joint made by fitting together. 2. The curved pipe joint according to claim 1, wherein the predetermined bending angle is 90/2 ⁿ degrees (n is an integer of 0 or more).