JP2007298049A - Joint body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint body wherein an anticorrosive body smoothly covers the outer faces of a socket and a spigot without hitching on the heads of a plurality of fixing members. <P>SOLUTION: The socket and the spigot are connected to each other by using the plurality of fixing members 9 formed along the peripheral direction of the socket 5 with at least the heads 9a protruding outward on the outer face of the socket 5. A cover band 30 consists of a cover portion 32 having an outer face 32a formed of a skid and a band portion 33. It is mounted on the socket 5 in the peripheral direction with the cover portion 32 covering the heads 9a of the plurality of fixing members 9, and the anticorrosive body covers the outer faces of the socket 5 and the spigot. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a joint body that watertightly connects an insertion port of another fluid pipe to a receiving port of one fluid pipe.

  The conventional joint body is fixedly connected to the receiving opening and the insertion opening, and the outer surface of the receiving opening and the insertion opening is covered with a corrosion prevention body to obtain a corrosion prevention structure in the joint body (for example, Patent Document 1). reference).

JP 2001-99391 A (second page, FIG. 1)

  The means for fixedly connecting the receiving opening and the insertion opening is, for example, screwed into a bolt hole formed along the circumferential direction on the outer surface of the receiving opening as a fixing member, and the head is outside the outer surface of the receiving opening. A plurality of bolts are formed so as to protrude in the direction, and conventional means such as fixing the receiving port and the insertion port by pressing the insertion port with this bolt are often used. .

  However, in Patent Document 1, when the receiving port and the insertion port are connected by the fixing member such as the bolt described above, when the outer surface of the receiving port and the insertion port is covered with the corrosion protection body, Since there are a plurality of fixing member heads protruding in the circumferential direction of the receiving port, the anticorrosive body is caught in contact with the fixing member head and smoothly receives and inserts. The outer surface of the fixing member could not be covered, and in some cases, the anticorrosive body could be damaged, such as tearing by the head of the fixing member.

  Furthermore, in order to cover the outer surfaces of the receiving port and the insertion port smoothly with the corrosion-resistant body, it takes time and effort to cover the heads of the formed fixing members one by one with a covering made of a lubricant or the like. It was.

  The present invention has been made paying attention to such problems, and a joint capable of smoothly covering the outer surfaces of the receiving port and the insertion port without the corrosion prevention body being caught by the heads of a plurality of fixing members formed. The purpose is to provide a body.

In order to solve the above-mentioned problem, the joint body according to claim 1 of the present invention is a joint body for watertightly connecting the insertion port of the other fluid pipe to the receiving port of one fluid pipe,
At least the head protrudes outward from the outer surface of the receiving port, the receiving port and the insertion port are connected by a plurality of fixing members formed along the circumferential direction of the receiving port, and the outer surface is made of a lubricant. A covering band composed of a covering portion and a band portion is attached in the circumferential direction of the receiving port in a state where the covering portion covers the heads of the plurality of fixing members, and the receiving port and the insertion port It is characterized in that the outer surface of is covered with a corrosion-resistant body.
According to this feature, a plurality of fixing member heads formed along the circumferential direction of the receiving port are covered with the covering portion of the covering band, and the covering band is attached to the receiving port in the circumferential direction. Therefore, the trouble of covering the heads of the fixing members formed one by one is reduced, and the anticorrosive body comes into contact with the fixing member whose outer surface is covered with the covering portion made of the lubricant. The outer surface of the receiving port and the insertion port can be covered smoothly without being caught.

A joint body according to a second aspect of the present invention is the joint body according to the first aspect, wherein the fixing member is constituted by a bolt screwed into a bolt hole formed on an outer surface of the receiving port. It is characterized by being.
According to this feature, by using a general-purpose bolt as a fixing member, the receiving port and the insertion port can be connected by an inexpensive member.

A joint body according to a third aspect of the present invention is the joint body according to the second aspect, wherein in the state where the bolt is screwed in insufficiently into the bolt hole, the covering band is formed on the receiving port. It is characterized in that it cannot be attached in the circumferential direction.
According to this feature, since the covering band cannot be attached in the circumferential direction of the receiving port when the bolt is screwed in insufficiently, depending on whether the covering band can be attached in the circumferential direction of the receiving port or not. , Whether the bolt is fully screwed or insufficiently screwed can be confirmed.

A joint body according to a fourth aspect of the present invention is the joint body according to any one of the first to third aspects, wherein the covering band is engaged with engaging portions formed on both ends of the band portion. The engaging portions are formed in an endless shape by being combined, and the engaging portions are formed at a plurality of locations along the longitudinal direction of the band portion according to the outer diameter of the receiving port.
According to this feature, a desired covering band can be configured by selecting an engagement portion of the engagement portion formed at a plurality of locations along the longitudinal direction of the band portion according to the outer diameter of the receiving port. I can do it.

A joint body according to a fifth aspect of the present invention is the joint body according to any one of the first to fourth aspects, wherein the covering band is composed of a plurality of divided bands.
According to this feature, a desired covering band can be configured by combining a plurality of divided bands according to the outer diameter of the receiving port or the number of fixing members that connect the receiving port and the insertion port.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a connection state between a receiving port and an insertion port in the embodiment of the present invention. FIG. 2 is a partial cross-sectional view showing a state in which the receiving port and the insertion port are connected. FIG. 3 (a) is a partial cross-sectional view showing a situation in which the covering band is covered in a state where the bolt is fully screwed, and FIG. 3 (b) is the same as FIG. 3 (a). It is a partial sectional view showing the situation. FIG. 4A is a plan view of connected divided bands, and FIG. 4B is a side view similar to FIG. FIG. 5 is a partial cross-sectional view showing a situation where the covering band is covered in a state where the bolt is screwed in insufficiently. FIGS. 6A and 6B are front views showing a situation where the outer surfaces of the receiving port and the insertion port are covered with a covering. FIG. 7 is a partial cross-sectional view showing a situation where the covering band in the first modification of the present invention is covered. FIG. 8 is a partial cross-sectional view showing a situation where the covering band in the second modification of the present invention is covered.

  As shown in FIG. 1, the joint body of the present invention watertightly connects the receiving port 5 of the straight pipe 2 as one fluid pipe and the insertion port 12 of the straight pipe 11 as the other fluid pipe. Is. In addition, fluid such as water and sewage or gas flows down in the fluid pipe.

  In addition, the joint body of the present invention includes a receiving port 5 formed at the end of the straight tube 2, an insertion port 12 formed at the end of the straight tube 11 inserted into the inner surface of the receiving port 5, It is mainly comprised from the volt | bolt 9 as a fixing member of the receiving port 5 and the insertion port 12. FIG.

  On the outer surface of the straight pipe 2 at a position spaced apart from the receiving port 5 in the direction of the tube axis C, the tube-shaped corrosion protection body 20 is straight with the tip folded back so as to have a slack in the direction of the tube axis C in advance. It is attached over the circumferential direction of the tube 2 and can cover the outer surfaces of the receiving port 5 and the insertion port 12 as described later. Similarly, on the outer surface of the straight tube 11 at a position spaced apart from the insertion opening 12 in the tube axis C direction, a tube-shaped corrosion-resistant body 21 is folded back so as to have a slack beforehand in the tube axis C direction. Thus, it is attached over the circumferential direction of the straight pipe 11 so that the outer surfaces of the receiving port 5 and the insertion port 12 can be covered.

  In addition, bolt holes 5b are formed at substantially equal intervals in the circumferential direction on the outer peripheral surface near the outer end of the receiving port 5, and are screwed in the direction perpendicular to the tube axis C from the outside of the straight tube 2. A plurality of bolts 9 (six in this embodiment) are configured as fixing members for the receiving port 5 and the insertion port 12 (see FIG. 3). Note that the number of bolts is not limited to six in the present embodiment, but a plurality of bolts may be formed along the circumferential direction of the receiving port.

  As shown in FIG. 2, a fixing claw 10 is provided at the tip of the bolt 9. The fixed pawl 10 is housed in a recess formed in the inner surface of the receiving port 5 along the circumferential direction.

  Next, the connection between the receiving port 5 and the insertion port 12 will be described. As shown in FIG. 1, a fixing ring 15 having a divided structure is fixedly attached to the outer surface in the vicinity of the tip of the receiving port 5. The fixing ring 16 is fixedly attached to the outer surface of the insertion opening 12. Next, the engagement bolt nuts 17 and 18 are engaged with the engagement holes 15a and 16a provided on both sides of the fixing rings 15 and 16 in the direction of the tube axis C, respectively.

  By inserting the engaging bolt nuts 17 and 18 while adjusting each other using the fixing rings 15 and 16 as a reaction force, the insertion port 12 is inserted toward the inside of the receiving port 5, The seal member 8 is compressed by the outer peripheral surface of the insertion port 12 to seal the gap between the inner surface of the receiving port 5 and the outer surface of the insertion port 12 in a watertight manner.

  Note that the connection means between the receiving port 5 and the insertion port 12 is not necessarily limited to that using the fixing rings 15 and 16 and the engagement bolt nuts 17 and 18 described above, and the receiving port 5 and the insertion port 12 are watertight. Anything that can be connected is acceptable.

  Next, as shown in FIG. 2, the fixing member between the receiving port 5 and the insertion port 12 will be described. The fixing member of the present invention has an inner surface of the receiving port 5 and the insertion port 12 near the outer end of the receiving port 5. After the gap with the outer surface is sealed, it is composed of a general-purpose bolt 9 that fixedly connects the receiving port 5 and the insertion port 12, and at least the head 9 a of the bolt 9 is outside the outer surface of the receiving port 5. It protrudes in the direction. In this way, by using a general-purpose bolt as a fixing member, the receiving port 5 and the insertion port 12 can be connected with an inexpensive member.

  Further, the fixing pawl 10 is provided at the tip of the bolt 9, and by doing so, the tip 10 a of the fixing pawl 10 is pressed toward the tube axis C by the screwing of the bolt 9, and Biting into the outer peripheral surface, the receiving port 5 and the insertion port 12 can be securely connected. Furthermore, the fixed connection as described above can stably maintain the sealing performance of the joint body even when an external force or an internal pressure is applied to the receiving port 5 or the insertion port 12.

  The bolt as the fixing member of the present invention does not necessarily have to be formed in a direction orthogonal to the tube axis C. For example, the bolt is screwed in an oblique direction having a predetermined angle other than the direction orthogonal to the tube axis C. It may be formed as described.

  Further, for example, a bolt formed on a tapered surface whose outer peripheral surface of the tip portion is reduced in diameter toward the front is disposed substantially parallel to the tube axis C on the outer end surface of the receiving port, and the bolt is screwed. At the same time, the taper surface may fix the receiving port and the insertion port by pressing the outer surface of the insertion port via a fixing claw disposed between the tapered surface and the outer surface of the insertion port.

  Next, as shown in FIGS. 3A and 3B and FIGS. 4A and 4B, the covering band 30 that covers the bolt 9 protruding outward from the outer surface of the receiving port 5 will be described. The covering band 30 includes a plurality of (six in this embodiment) divided bands 31 each having a covering portion 32 whose outer surface 32a is made of a lubricant and a band portion 33 formed integrally with the covering portion 32. Is configured.

  Each of the covering portions 32 is formed in a concave surface so as to cover the heads 9a of the six bolts 9 formed to protrude outward from the outer surface of the receiving port 5, and the band portion 33 is formed. Engagement portions each including a convex portion 33a and a hole portion 33b are formed on both end sides of each. The adjacent divided bands 31 and 31 are formed so as to be connectable by engaging the convex portions 33a and the hole portions 33b of the adjacent band portions 33 and 33.

  In the covering band 30 composed of the divided bands 31 connected in this way, the distance between the adjacent covering portions 32 and 32 is formed so that the bolts 9 and 9 adjacent to each other are formed so as to protrude outward from the outer surface of the receiving port 5. The protrusions 33a of the band portions 33 and 33 adjacent to each other and the hole portions 33b are engaged with each other so as to be substantially the same distance as the separation distance, thereby projecting outward from the outer surface of the receiving port 5. A covering band 30 having a size capable of covering the heads 9a of the six bolts 9 is formed.

  Moreover, the convex part 33a mentioned above is formed in multiple places (three places in a present Example) at predetermined intervals in the longitudinal direction of the band part 33, and the hole 33b is also provided in multiple places at equal intervals with the convex part 33a. (7 places in this embodiment) are formed. In the present embodiment, all of the convex portions 33 a formed at three locations are engaged with three locations near the covering portion 32 among the hole portions 33 b formed at seven locations in the band portion 33 of the adjacent divided band 30. (See FIGS. 4A and 4B).

  By doing in this way, according to the outer diameter of the receiving port 5, by selecting the engagement location of the convex portion 33a and the hole portion 33b formed at a plurality of locations along the longitudinal direction of the band portion 33, A desired covering band 30 can be formed. In addition, if the formation part of the convex part 33a and the hole part 33b mentioned above is two or more places, the convex part 33a in a present Example is not restricted to three places, and the hole part 33b is not restricted to seven places, and any number of places, I do not care.

  Further, as described above, the covering band 30 is composed of a plurality of divided bands 31, and in this way, the bolt 9 that connects the outer diameter of the receiving port 5 or the receiving port 5 and the insertion port 12. Depending on the quantity, a plurality of divided bands 31 can be combined to form a desired coated band 30.

  Next, as shown in FIG. 3A, the attachment of the covering band 30 will be described. The covering band composed of the six divided bands 31 connected to each other as described above is disposed outside the outer surface of the receiving port 5. Each of the heads 9a of the six bolts 9 formed so as to protrude is covered with the covering portion 32 and wound around the outer surface of the receiving port 5 in the circumferential direction.

  Next, as shown in FIG. 3 (b), the covering band 30 is formed by engaging the projections 33 a and the holes 33 b of the split bands 31 and 31 formed on both ends of the covering band 30 with each other. Are attached so as to be endless in the circumferential direction of the outer surface of the receiving port 5.

  Further, as shown in FIG. 5, in a state where a part of the plurality of bolts 9 'are partially screwed into the bolt holes 5a, the head 9a' of the bolt 9 'is Since the distance between the bolt 9 and the bolt 9 ′ adjacent to each other is larger than the predetermined distance, the covering portion 32 can cover the head portion 9a ′ of the bolt 9 ′. The covering band 30 cannot be attached in the circumferential direction of the receiving port 5.

  By doing in this way, since the covering band 30 cannot be attached in the circumferential direction of the receiving port 5 in a state where the bolt 9 ′ is screwed in insufficiently, the covering band 30 is attached in the circumferential direction of the receiving port 5. It can be confirmed whether the bolt 9 ′ is sufficiently screwed or insufficiently screwed depending on whether it is possible or not attachable.

  Next, as shown in FIG. 6 (a), the tube-shaped anticorrosion body 20 previously attached over the circumferential direction of the straight pipe 2 as described above is directed toward the receiving port 5 and the insertion port 12 side. Then, after pulling in the tube axis C direction and covering the outer surfaces of the receiving port 5 and the insertion port 12, the end portion of the corrosion protection body 20 is fastened along the circumferential direction of the straight tube 11 by the band 22.

  By doing in this way, the covering band 30 of the receptacle 5 is covered with the covering portion 32 covering the heads 9 a of the bolts 9 formed in a plurality (six) along the circumferential direction of the receptacle 5. Since it can coat | cover collectively by attaching in the circumferential direction, the effort which coat | covers the head 9a of the volt | bolt 9 as a plurality of fixing members formed one by one is reduced, and the tube-shaped corrosion protection body 20 has the outer surface 32a. The outer surface of the receiving port 5 and the insertion port 12 can be smoothly covered without being caught by being brought into contact with the bolt 9 covered by the covering portion 32 made of the lubricant.

  Next, as shown in FIG. 6 (b), the tube-shaped anticorrosive body 21 is pulled in the direction of the tube axis C toward the receiving port 5 and the insertion port 12 in the same manner as described above, and the receiving port 5 and the insertion port After covering the outer surface of 12, the end portion of the corrosion protection body 21 is fastened along the circumferential direction of the straight pipe 2 by the band 23.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, as a first modification of the present invention, as shown in FIG. 7, a receptacle having substantially the same diameter as the receptacle 5 in the above embodiment and four bolts 9 formed at equal intervals in the circumferential direction. The attachment of the covering band 30 to the mouth 5 ′ will be described. The distance between the adjacent bolts 9 in the receiving opening 5 ′ is larger than the distance between the adjacent bolts 9 in the receiving opening 5 shown in the above embodiment. Become.

  For this reason, in the first modified example, the adjacent divided bands 31 and 31 are connected to the hole 33b in which seven protrusions 33a1 near the tip of the three protrusions 33a are formed. By engaging with the hole 33b1 near the tip, the distance between the adjacent covering portions 32, 32 is set to be approximately equal to the distance between the adjacent bolts 9 in the receiving port 5 ′. Can form a desired covering band 30 ′ that can be attached to the receiving ports 5 ′ formed at four positions at equal intervals in the circumferential direction.

  Moreover, in the said Example, although the covering band 30 was comprised from the some division | segmentation band 31, the structure of a covering band is not necessarily restricted to the said Example, It shows in FIG. 8 as a 2nd modification of this invention. As shown, for example, a plurality of covering portions 42 are integrally connected by a single band portion 43, and an engaging portion formed of a convex portion 43 a and a hole portion 43 b on both ends of the single band portion 43. May be formed.

  Moreover, in the said Example, although the insertion port 12 and the receiving port 5 which are mutually connected comprise the pipe line member which consists of the straight pipe 2 and the straight pipe 11 as shown in FIG.1 and FIG.2, this book The insertion port 12 and the receiving port 5 used in the invention are not necessarily limited to the straight tube 2 and the straight tube 11 as long as they have a configuration that can be connected to each other, for example, a T-shaped tube having three end portions or a tube. An elbow pipe having a curved portion in part along the axis may be used, or a hose having flexibility may be used. Moreover, the insertion port 12 and the receiving port 5 may comprise a part of various pumps or a storage tank.

  Moreover, in the said Example, although the tube-shaped corrosion prevention bodies 20 and 21 which coat | cover the outer surface of the receiving port 5 and the insertion port 12 are shown, a corrosion prevention body is a planar shape which coat | covers the outer surface of a receiving port and an insertion port. If it has a body, it does not necessarily need to be a tube shape, and may be formed in a sheet shape, for example.

  Furthermore, in the above embodiment, the general-purpose bolt 9 is shown as a fixing member for connecting the receiving port and the insertion port. However, the fixing member is formed so that at least the head protrudes outward from the outer surface of the receiving port. As long as it is, it is not necessarily limited to the bolt, and may be a known member that connects the receiving port and the insertion port.

  Moreover, in the said Example, although the engaging part which consists of the convex part 33a and the hole part 33b is formed in the both ends side of the band part 33, the both ends of a band part are connected so that attachment or detachment is possible. Can be formed endlessly in the circumferential direction, the engaging portion is not limited to the above-described configuration. For example, known so-called Velcro tapes (registered trademark) are formed on both ends of the band portion 33, respectively. By setting (registered trademark) in a worn state, the covering band may be formed endlessly in the circumferential direction of the receiving port.

  Moreover, in the said Example, although the fixing member of the insertion port 12 and the receiving port 5 is comprised by the volt | bolt 9 which has the fixed nail | claw 10 in the front, if this fixation is made appropriate, it will be the structure of a fixing member. Is not necessarily limited to the above-described embodiment. For example, the fixing pawl 10 is not provided, and a recess is formed on the outer peripheral surface of the insertion opening at a position where it abuts on the tip of the bolt 9. The bolt 9 may be screwed so as to be immersed in the recess.

It is a top view which shows the condition of the connection of a receptacle and an insertion opening in the Example of this invention. It is a partial cross section figure which shows the condition which connected the receptacle and the insertion opening. (A) is a partial cross-sectional view showing a situation where the covering band is covered in a state where the bolt is sufficiently screwed, and (b) is a situation where the covering band is covered as in FIG. 3 (a). FIG. (A) is a top view of the divided | segmented band connected, (b) is a side view similarly to Fig.4 (a). It is a partial cross section figure which shows the condition which has coat | covered the covering band in the state in which the volt | bolt was screwed in insufficiently. (A), (b) is a front view which shows the condition which coat | covers the outer surface of a receptacle and an insertion port with a covering. It is a partial cross section figure which shows the condition which coat | covered the coating band in the 1st modification of this invention. It is a partial cross section figure which shows the condition which coat | covered the coating band in the 2nd modification of this invention.

Explanation of symbols

2 Straight pipe (fluid pipe)
5 Receptacle 5b Bolt hole 8 Seal member 9, 9 'Bolt 9a, 9a' Head 10 Fixed claw 10a Tip 11 Straight pipe (fluid pipe)
12 Insert 15 Receptor 15b Bolt hole 20 Corrosion-proof body 21 Corrosion-proof body 22 Band 23 Band 30, 30 'Cover band 31 Split band 32 Cover part 32a Outer surface 33 Band part 33a Convex part (engagement part)
33b Hole (engagement part)
40 Covering band 42 Covering part 43 Band part 43a Convex part (engaging part)
43b Hole (engagement part)
C pipe shaft

Claims (5)

A joint body for watertightly connecting the insertion port of the other fluid pipe to the receiving port of one fluid pipe,
At least the head protrudes outward from the outer surface of the receiving port, the receiving port and the insertion port are connected by a plurality of fixing members formed along the circumferential direction of the receiving port, and the outer surface is made of a lubricant. A covering band composed of a covering portion and a band portion is attached in the circumferential direction of the receiving port in a state where the covering portion covers the heads of the plurality of fixing members, and the receiving port and the insertion port A joint body, characterized in that the outer surface of is coated with a corrosion-resistant body.   The joint body according to claim 1, wherein the fixing member is configured by a bolt screwed into a bolt hole formed on an outer surface of the receiving port.   The joint body according to claim 2, wherein the covering band is formed so as not to be attached in a circumferential direction of the receiving port in a state where the bolt is screwed into the bolt hole inadequately.   The covering band is formed to be endless by engaging engagement portions formed on both end sides of the band portion, and the engagement portion is formed according to the outer diameter of the receiving port. The joint body according to claim 1, wherein the joint body is formed at a plurality of locations along a longitudinal direction of the band portion. The said covering band is comprised from the some division | segmentation band, The coupling body in any one of Claim 1 thru | or 4 characterized by the above-mentioned.

Images