JP2007263314A - Heat insulating cover press of pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately maintain a mounting position of a heat insulating material of a fluid pipe without separating from a heat insulating cover. <P>SOLUTION: A frame member 1 surrounding the heat insulating cover 3 covering a joint 2 is composed of a pair of split bodies 4 split along a virtual plane in parallel with the axis of the joint 2, and is configured to cover at least the periphery of the part corresponding to an end of the joint 2 of the heat insulating cover 3. The pair of split bodies 4 is made integral with each other upon surrounding the heat insulating cover 3, and is integrally provided with locking claws 9 for locking with a heat insulating material 10 of the fluid pipe 7 connected to the joint 2 and fixing that position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is for piping for water supply or hot water supply systems, and covers a joint (for example, cheese, socket, or elbow) that connects a fluid pipe with a heat insulating material, and performs heat insulation and prevention of condensation. The present invention relates to the insulation cover for joints.

  Conventionally, in water supply and hot water supply piping, water supply and hot water supply pipes (hereinafter simply referred to as fluid pipes) and the joints connecting them are made of synthetic resin such as urethane foam to keep warm and prevent condensation. This is covered with a heat insulating material cover (sometimes referred to as a heat insulating material, but referred to as a heat insulating material cover in the present invention).

One specific means of covering is a widely used means, but this heat insulating material cover is constituted by a pair of half-divided bodies, and each half-divided body is enclosed so that a joint is sandwiched between them. These half-divided bodies are fastened and fixed with a synthetic resin binding band (trade name: Insulok).
Another means consists of a pair of half-divided bodies in the same manner as described above. Adhesive packing materials are attached to the divided surfaces where the respective half-divided bodies abut each other. The divided bodies are integrated.
In addition, a heat insulating material cover that can handle joints of different sizes with one type of heat insulating material cover has been proposed. However, the covering method is the same as the above, and it is fastened and fixed with a binding band made of synthetic resin.
Japanese Utility Model Publication No. 05-079194 Japanese Patent Laid-Open No. 11-118091 JP 2004-124955 A

  Conventionally, in order to increase the work efficiency at the site, this type of water supply or hot water supply system piping is pre-measured at the construction site, and with a heat insulating material of a length according to the measurement at the factory, etc. The joint is connected in advance to the fluid pipe and assembled in advance, and this is wound compactly and packed. After packing, it is shipped to a construction site, and on the site, a means is adopted that can be simply connected to a faucet such as a kitchen, a washroom, and a bathroom. Further, for example, a polyethylene pipe surrounded by a heat insulating material is employed as the fluid pipe. The heat insulating material for the fluid pipe is not fixed with an adhesive or the like, and a product simply fitted outside is employed.

  By the way, the conventional means as described above, in any case, the assembly of the heat insulating material of the fluid pipe and the heat insulating material covering the joint is removed, or the joint shape is a straight tube (socket). In some cases, the heat insulating material cover may be displaced from the joint. In the case of the latter means in which an adhesive packing material is adhered, the heat insulating material of the fluid pipe may easily come out of the heat insulating material cover even if the heat insulating material cover itself is less detached.

  As a result of various studies to solve such conventional problems, the present inventor, in any case, the cause of the detachment of the heat insulating material is that the end of the heat insulating material externally fitted to the fluid pipe is insulated. It was found that there was the biggest reason that it was assembled simply by being pressed by the material cover. It has also been found that there is a problem in fastening and fixing the heat insulating material cover that is relatively elastically deformable with a binding band. For example, due to insufficient tightening force, there are many cases where unexpected external force is applied during vibration during transportation, unpacking at the site, or handling at the site, etc. It easily slipped out of the insulation cover. Further, the heat insulating material cover is also displaced with respect to the straight tubular joint.

  Therefore, as a result of extensive development based on this new knowledge, the present inventor can easily maintain the mounting position of the heat insulating material of the fluid pipe without detaching from the heat insulating material cover. We have developed a method that can fix the insulation cover firmly to the joint.

  Accordingly, a first object of the present invention is to enable the heat insulating material of the fluid pipe to be accurately held without being detached from the heat insulating material cover. And the second purpose is to make it possible to fix the insulation cover firmly to the straight pipe joint.

  In order to solve the first technical problem, in the heat insulating material cover presser of the pipe joint according to claim 1 of the present invention, the frame member surrounding the heat insulating material cover covering the joint is parallel to the axis of the joint. And a pair of divided bodies that are divided along a virtual plane, and are configured to cover the periphery of a portion corresponding to at least the end of the joint of the heat insulating material cover, and the pair of divided bodies When the heat insulating material cover is enclosed, the lock claws are integrated with each other and engaged with the heat insulating material of the fluid pipe connected to the joint to fix the position thereof.

  According to the above configuration, the fluid pipe with the heat insulating material is cut in accordance with the on-site measurement, and the end portion thereof is a Т-shaped joint (cheese), a straight tubular joint (socket), and further an L-shape. Connect to the elbow joint as appropriate. At this time, the fluid pipe is firmly connected to the joint via a nut, but the heat insulating material is simply fitted onto the fluid pipe. Next, the joint is covered with a heat insulating material cover, and the periphery of the heat insulating material cover is continuously surrounded by a divided body. By the surrounding of the divided body, the heat insulating material cover is pressed inward, that is, toward the joint peripheral surface side, is in close contact with the joint, and is firmly assembled.

  At this time, the heat retaining material covering the fluid pipe is pierced from the outside by the lock claw provided on the divided body, and the heat retaining material is firmly fixed at a predetermined position. In this way, the assembled pipe is wound up with an appropriate diameter, boxed, shipped to the site, and connected to water washing or the like at the construction site. Therefore, the heat insulating material is not easily displaced even by some external force.

  In order to solve the second technical problem, the heat insulating material cover presser of the pipe joint according to claim 2 of the present invention is characterized in that the frame member surrounding the heat insulating material cover covering the joint has an axis of the joint. An end frame that surrounds a peripheral surface corresponding to at least an end of a joint of the heat insulating material cover and a vertical end surface that follows the pair. And a connecting frame portion that connects and surrounds at least a part of the other peripheral surface portion of the heat insulating material cover by connecting the portion and the end frame portion, and the pair of divided bodies are provided with the heat insulating material cover. When they are enclosed, they are integrated with each other by non-releasable engaging means, and the end frame part engages with a heat insulating material of a fluid pipe connected to a joint, and a locking claw for fixing the position is integrated. It is prepared for.

  According to the above configuration, the fluid pipe is cut in accordance with on-site measurement, and its end is appropriately connected to the joint in the same manner as described above. At this time, the fluid pipe is firmly connected to the joint via a nut or the like, but the heat insulating material is simply fitted onto the fluid pipe. Next, the joint is covered with a heat insulating material cover, and the periphery of the heat insulating material cover is continuously surrounded by a divided body. The insulation cover is pressed inward by the surroundings of the divided bodies and is in close contact with the joint so that it is firmly assembled.

  At this time, the heat retaining material covering the fluid pipe is pierced from the outside by the lock claw provided on the divided body, and the heat retaining material is firmly fixed at a predetermined position. In this way, the assembled pipe is wound up with an appropriate diameter, boxed, shipped to the site, and connected to water washing or the like at the construction site. Therefore, the heat insulating material is not easily displaced even by some external force. In addition, since the end frame part of the divided frame is formed as an integral part by the connecting frame part, the heat insulating material and the heat insulating material cover of the fluid pipe are integrated by the lock claw, and both can be easily displaced. Disappear.

Therefore, this invention has the following effects.
In the heat insulating material cover presser of the pipe joint according to the first aspect of the present invention, the lock claw provided on the divided body can pierce the heat insulating material from the outside, and can firmly fix the heat insulating material at a predetermined position. Even if there is vibration during transportation such as after shipment from the factory or some rough handling at the delivery site, the heat insulating material does not easily displace, and it is well fixed at the desired mounting position for the joint. be able to.

  Further, in the heat insulating material cover presser of the pipe joint according to claim 2 of the present invention, the lock claw provided in the divided body pierces the heat insulating material from the outside thereof, and can firmly fix the heat insulating material at a predetermined position. At the same time, since the end frame part of the split frame is formed as a single unit by the connecting frame part, the heat insulating material and the heat insulating material cover of the fluid pipe are integrated by a lock claw. Even if there is some vibrations or rough handling at the delivery site, the heat insulating material is not easily displaced, and it can be accurately and securely fixed to the desired mounting position with respect to the joint.

In the present invention, the lock claw is provided at least one pair opposite to each other at a symmetrical position around the axis of the fluid pipe, or at a symmetrical position around the axis of the fluid pipe. It is desirable to provide a plurality at predetermined intervals in the circumferential direction.
The pair of lock claws can be inserted into the heat insulating material in one diametrical direction, even if the fluid pipe has a small diameter, so that the heat insulating material can be accurately and securely fixed to the desired mounting position on the joint. In addition, even if the multiple locking claws are large-diameter fluid pipes, the heat insulating material is pierced at multiple locations, and the heat insulating material is more precisely and securely fixed to the desired mounting position with respect to the joint. Because it can. Moreover, this single type of divided body can be applied well to fluid pipes having different diameters, and it is possible to eliminate various management operations and therefore eliminate work errors.

In the present invention, it is preferable that at least the extension end side of the lock claw is provided toward the center side of the joint.
This is because the heat insulating material can be strongly opposed to an external force trying to remove the heat insulating material from the joint, and the heat insulating material can be more accurately and firmly fixed to the desired mounting position with respect to the joint.

Further, according to the present invention, as described in claim 5, the non-detachable engaging means are provided in the engaging claw provided in one divided body and the other divided body, and the engaging claw is It is desirable that it is composed of an engaging hole that is forcibly fitted.
There is no risk that the split body will be easily separated even during transportation or at the work site due to insufficient external force. Therefore, the insulation cover, not to mention the heat insulating material, is firmly and securely fixed to the joint. It is because it can be kept.

In the present invention, as described in claim 6, it is desirable that the pair of divided bodies be configured so that they can be folded back or separated at the connecting portion on one side surface thereof.
If it can be folded at the connecting portion on one side surface, the handling becomes easy. Moreover, when it is separated, it is easy to manufacture the divided body, and it can be manufactured and provided at low cost.

Furthermore, in this invention, as described in claim 7, it is desirable that the frame member has a rounded corner and the surface shape is a curved surface.
This is because there are almost no projections from the frame member, it is easy to handle during transportation and work, and safety is improved.

  Hereinafter, some embodiments of the present invention will be described in detail with reference to the drawings.

Example 1
First, the case where the heat insulating material cover presser of the pipe joint according to the present invention is applied to a straight tubular joint (socket) will be described in detail below with reference to FIGS.

In FIG. 1, the frame member 1 has a substantially cylindrical shape as a whole so as to surround a heat insulating material cover 3 covered with a straight tubular joint (socket) 2.
More specifically, the frame member 1 is composed of a pair of upper and lower divided bodies 4 that are divided along an imaginary plane parallel to an axis of the joint 2 (a straight line connecting direction of the fluid pipe 5 described later). The divided body 4 connects a pair of left and right end frame portions 4A surrounding the circumferential surface 3A corresponding to at least the end portion of the joint 2 of the heat insulating material cover 3 and the vertical end surface 3B, and the end frame portions 4A. A pair of front and rear connecting frame portions 4B that surrounds and surrounds at least a part of the other peripheral surface portion 3C of the heat insulating material cover 3 are integrally formed. Further, an intermediate frame 4C that is integrally connected between the pair of front and rear connecting frame portions 4B in the left-right direction is provided. Therefore, each of the divided bodies 4 has a substantially semicircular cross-sectional shape in order to accommodate approximately half of the heat insulating material cover 3. Moreover, the corner | angular part of the site | part surrounding the surrounding surface 3A of the said heat insulating material cover 3 of the said end frame part 4A and the vertical end surface 3B following this is formed in a curved surface. In the drawing, 4A1 represents a portion surrounding the peripheral surface 3A corresponding to the end portion of the joint 2 of the heat insulating material cover 3 by the end frame portion 4A, and is referred to as a peripheral surface frame portion. Further, 4A2 in the drawing represents a portion where the end frame portion 4A surrounds the vertical end surface 3B following the peripheral surface 3A corresponding to the end portion of the joint 2 of the heat insulating material cover 3, and is referred to as a vertical end surface plate.

  Further, the pair of divided bodies 4 are connected by a connecting portion 5 on one side surface 4D thereof. The connecting portion 5 is configured such that a thin connecting band 5A is integrally connected to the one side surface 4D of both divided bodies 4, and the connecting portion 5 can be folded back as a rotation shaft.

  Further, when the divided body 4 is folded at the connecting portion 5 to surround the heat insulating material cover 3 on the side opposite to the side surface 4D where the connecting portion 5 of the frame member 1 is provided, that is, on the open side 4E. In addition, an engagement means 6 is provided to make the pair of divided bodies 4 undetachable.

  The non-detachable engaging means 6 includes an engaging claw 6A provided integrally with the connecting frame portion 4B located on the open side 4E of one (upper in the figure) divided body 4 and the other (upper in the figure). The upper divided body 4 is provided integrally with the connecting frame portion 4B located on the open side 4E, and includes an engaging hole 6B for forcibly fitting the engaging claw 6A. The engaging claw 6A exhibits a function as a rectangular spring plate that is integrally connected downwardly with the lower end of the connecting frame portion 4B positioned lower than the lower edge of the connecting frame portion 4B. The hanging piece 6A1 and the thick protrusion 6A2 are integrally provided along the lower end edge of the hanging piece 6A1. Further, the engagement hole 6B has a minimum opening width enough to insert the thickness of the front and rear width of the thick protrusion 6A2 of the hanging piece 6A1 outward from the connection frame portion 4B. , Formed by a locking frame 6B1 protruding integrally in a U-shape.

  Furthermore, a hole 8 for inserting a fluid pipe 7 having a predetermined radius centered on the axis of the joint 2 is provided at the center of the vertical end face plate 4A1 of the end frame portion 4A. The hole 8 has an opening diameter sufficient to allow the fluid pipe 7 corresponding to the largest diameter of the joint 2 to be applied to pass therethrough.

  Also, as shown in FIGS. 1 and 3 to 4, the inner edge of the hole 8 and a plurality of positions along the opening edge of the hole 8 at symmetrical positions around the axis of the fluid pipe 7. A plurality (three in the illustrated example) of lock claws 9 are integrally projected toward the axial center side of the fluid pipe 7. Among the lock claws 9, the central lock claw 9A is set to have a shorter protruding length than the lock claws 9B on the left and right sides. The protruding ends of the lock claws 9B on the left and right sides are formed at acute angles.

  Although three lock claws 9 are provided in the illustrated example, they are appropriately selected within the range of 1 to 4 as necessary. However, in the case of one, it is desirable that it be provided at a symmetrical position around the axis of the fluid pipe 7. Further, a pair can be provided on both the left and right sides of the fluid pipe 7 except for the symmetrical position around the axis.

  Further, as shown in FIG. 4, the lock claw 9 is provided such that at least its extended end side is inclined toward the center side of the joint 2, that is, in the left-right direction toward the center side thereof.

  The lock claw 9 functions to pierce the heat insulating material 10 of the fluid pipe 7 connected to the joint 2 from the outside to ensure a predetermined mounting position of the heat insulating material 10.

  In addition, the fluid pipe 7 is made of a resin pipe, and the heat insulating material 10 fitted on the outside thereof is made of a resin foam, so that the fluid pipe 7 can be kept warm and prevented from being damaged. The fluid pipe 7 is connected to the connecting portion 2A of the joint 2 by a known method. In other words, the end of the fluid pipe 7 is expanded and fitted outside the connecting part 2A, and then the press-fitting ring is press-fitted outside the enlarged diameter part of the fluid pipe 7 to maintain the connected state. Further, a slight gap is formed between the fluid pipe 7 and the heat insulating material 10 coated on the outside thereof, and the heat insulating material 10 is dimensioned to slide with respect to the fluid pipe 7. When the fluid pipe 7 is connected to the connection portion of the joint 2, the heat insulating material 10 is shifted and the end of the fluid pipe 7 is exposed.

  The heat insulating material cover 3 is made of a resin foam and accommodates the joint 2 to keep warm. As shown in FIG. 1, the pair of halves 3E are arranged in the axial direction of the fluid pipe 7. It is configured to be openable and closable via a hinge connecting portion 3F parallel to the head. Each half-divided body 3E is provided with a joint storage recess 3G having an overall shape for storing approximately half of the joint 2 in a straight tube shape, and connected to the joint storage recess 3G. A pair of left and right connecting portion storage recesses 3H for storing approximately half of the connecting portion is opened in a flat contact surface and provided symmetrically with respect to the contact surface. Needless to say, the cross-sectional shape is semicircular.

  The structure of the fluid pipe 7 and the heat insulating material, the connection method to the joint 2, and the structure of the heat insulating material cover 3 have been widely used by those skilled in the art.

Next, how to use the heat insulating material cover presser of the pipe joint shown in the first embodiment will be described below with reference to FIGS. 1 and 3 to 4.
The fluid pipes 7 are connected to the respective connecting portions 2A of the joint 2 in the above-described procedure, and then the connecting portion of the joint 2 and the fluid pipe 7 is connected to one half (lower part) of the heat insulating material cover 3E. Then, the other half-divided body 3E is closed and the contact surfaces of the pair of half-divided bodies 3E are brought into close contact with each other. Subsequently, one of the divided members 4 of the frame member 1 is inserted into the lower half of the heat insulating material cover 3 while the lower half of the fluid pipe 7 covered with the heat insulating material 10 is inserted into the hole 8 of the end frame member 4A. Fit. Further, while folding back at the connecting portion 5, while inserting the upper half of the fluid pipe 7 covered with the heat insulating material 10 into the hole 8 of the end frame member 4 </ b> A of the other (upper) divided body 4 of the frame member 1, The heat insulating material cover 3 is fitted on the upper half.

  At this time, as shown in FIG. 5, the lower end edge of the engaging piece 6A of the engaging means 6 reaches the upper opening of the engaging hole 6B, and the protrusion 6A2 at the lower end of the hanging piece 6A1 is connected to the locking frame 6B1. Therefore, if the other divided body 4 is pressed more strongly against the other divided body 4, the drooping piece 6A1 elastically deforms its lower end edge toward the connecting frame portion 4B, thereby engaging the protrusion 6A2. When the protrusion 6A2 moves from the upper side to the lower side of the joint hole 6B and the protrusion 6A2 finishes moving through the engagement hole 6B, the protrusion 6A2 is moved to the lower end of the locking frame 6B1 by the elastic restoring force of the hanging piece 6A1. Will be engaged. As a result, both divided bodies 4 embrace the heat insulating material cover 3 and are firmly integrated with each other. As a result of the integration of the divided bodies 4, both the heat insulating material 10 coated on the outside of the fluid pipe 7 and the joint housing recess 3G of each half-divided body 3E are slightly compressed and deformed. 10 is closely attached to the inner peripheral surface of the connecting portion housing recess 3H.

However, with this close contact alone, there is a possibility that the heat insulating material 10 may easily be detached from the connection portion housing recess of the heat insulating material cover 3 due to an unexpected external force.
However, in the present invention, as shown in FIG. 4, the lock claw 9 pierces the outer side of the heat insulating material 10 from a plurality of locations. It will be firmly fixed in position. In addition, since the extension end side of the lock claw is directed toward the center side of the joint 2, the lock claw strongly opposes an external force that particularly tries to pull out the heat insulating material 10 from the heat insulating material cover 3. Therefore, the pipes assembled by factories and the like are wound up with an appropriate diameter, packed in boxes, shipped to the site, and connected to water washing etc. at the construction site. Unexpected external force is applied during this work process. However, the heat insulating material 10 is fixed and held precisely and securely at the desired desired mounting position with respect to the joint 2.

  In addition, since the protruding length of the pair of lock claws 9A facing each other in the diameter direction of the fluid pipe 7 is set shorter than the others, even if the fluid pipe 7 has a large diameter, It can be mounted and can be successfully applied to fluid pipes 7 having different diameters with this one kind of divided body 4, and it is also possible to eliminate various management and therefore eliminate work errors.

  As shown in the figure, the frame member 1 is composed of an end frame portion 4A, an intermediate frame 4C, and a connecting frame portion 4B for connecting them together. Although it is watermarked without providing a frame member, this is intended to save material and reduce the weight, but even if it is configured in a complete cylinder state, it does not show through as necessary, but the same effect is achieved. Demonstrates and successfully achieves the intended purpose.

(Example 2)
Next, the case where the heat insulating material cover presser of the pipe joint according to the present invention is applied to a Т-shaped cheese joint will be specifically described below with reference to FIGS.

  The frame member 1 corresponds to the Т-shaped cheese joint, and the overall shape is T-shaped in plan view. A pair of extended connecting frame portions 4F connected to the connecting frame portion 4B are integrally extended from the left and right intermediate portions of the straight tubular frame member corresponding to the socket to the one side, and the end is extended to the end. An extended end frame portion 4G having the same configuration as the frame portion 4A is integrally provided.

  Further, the pair of T-shaped divided bodies 4 has the same structure as that of the first embodiment in that the T-shaped divided bodies 4 are configured to be freely opened and closed via a connecting portion 5 parallel to the axial direction of the fluid pipe 7. Needless to say, the extended end frame portion 4G is provided with a hole 8 and a lock claw 9, and the pair of left and right extended connecting frame portions 4F are provided with engaging means 6, respectively. Therefore, in the second embodiment, the engaging means 6 includes a pair of left and right provided on the connecting frame portion 4B located on the open side 4E and a pair of left and right provided on the extended end frame portion 4G. There are four.

  Since the method of using the heat insulating material cover presser of the pipe joint shown in the second embodiment configured as described above is not particularly different from the first embodiment, detailed description thereof will be omitted.

(Example 3)
Next, a modification of the heat insulating material cover presser of the pipe joint according to the present invention will be specifically described below with reference to FIG.

  The third embodiment is intended for a structure that is further simplified and reduced in weight, and does not include the frame structure described in the first or second embodiment. That is, although it is a frame member, it does not include the connecting frame portion 4B, the intermediate frame 4C, and further the extended connecting frame portion 4F, and is configured only by the end frame portion 4A.

  Specifically, means for fastening and fixing the end of the heat insulating material cover 3 by the individually independent end frame portions 4A is employed. As in the first and second embodiments, the end frame portion 4 </ b> A is divided into two parts in the vertical direction, and is configured to be openable and closable via a connecting portion 5 parallel to the axial direction of the fluid pipe 7. The holes 8, the lock claws 9, and the engaging means 6 are provided as in the embodiments.

  In the third embodiment, unlike the first and second embodiments, when the end frame portion 4A is a straight pipe joint (socket), the end frame portion 4A is parallel to the straight connection direction of the fluid pipe 5. Slightly wide, and in the case of cheese joints, both branch sides are also slightly wider in the direction of fluid pipe connection, specifically about 1.5 to 2 times that of Example 1 or Example 2. It is important to keep it. This is because a larger contact area with the heat insulating material cover 3 is taken to prevent unexpected detachment.

  In FIG. 8, reference numeral 11 denotes a stopper provided on the end frame portion 4 </ b> A, and is fitted into a pair of locking holes 12 provided on the hinge connecting portion 3 </ b> F and the joining surface side of the heat insulating material cover 3. In addition to the tightening force of the end frame portion 4A, an unexpected external force prevents the end frame portion 4A from coming off the heat insulating material cover 3 more reliably.

  The end frame portion 4 </ b> A of the third embodiment configured as described above is individually attached to the end of the heat insulating material cover 3, and the heat insulating material cover 3 is tightened by the engaging means 6. The function after mounting is the same as in the first and second embodiments.

Example 4
Next, Example 4 shows a modification of the engaging means 6, and a structure as shown in FIG. 9 can also be adopted.
Specifically, instead of the locking piece 6A shown in FIG. 5, a pair of left and right locking claws 6A10, which is an example of an engagement claw 6A, and an engagement hole 6B that engages with this are configured.
The latching claws 6A10 are provided with a pair of hanging strip pieces 6A11 at an appropriate interval in the left-right direction, and a pair of hanging strip pieces 6A11 is provided with a locking piece 6A21 protruding in the left-right lateral direction. The distance between the left and right of the locking piece 6A21 is set longer than the opening left and right width of the engagement hole 6B.

  Accordingly, in the final stage of surrounding the divided body 4 with the heat insulating material cover 3, the locking piece 6A21 at the lower end of the hanging strip 6A11 comes into contact with the locking frame 6B1, so that the other divided body 4 is made stronger and stronger. When pressed against the divided body 4, the drooping strip 6A11 elastically deforms its lower end edge toward the center of the engaging hole 6B, and the locking piece 6A21 moves from the upper side to the lower side of the engaging hole 6B. When the stop piece 6A21 finishes moving through the engagement hole 6B, the lock piece 6A21 is engaged with the lower end of the lock frame 6B1 by the elastic restoring force of the hanging strip 6A11. As a result, both divided bodies 4 embrace the heat insulating material cover 3 and are firmly integrated with each other. As a result of the integration of the divided bodies 4, both the heat insulating material 10 coated on the outside of the fluid pipe 7 and the joint housing recess 3G of each half-divided body 3E are slightly compressed and deformed. 10 is closely attached to the inner peripheral surface of the connecting portion housing recess 3H.

  In each of the embodiments described in detail above, the divided body 4 has an example in which the cross-sectional shape is a semicircular shape. This shape is, for example, an ellipse or a trapezoid according to the outer shape of the heat insulating material cover 3. Needless to say, various shapes are adopted. Moreover, although a pair of division body 4 is comprised so that opening and closing is possible via the connection part 5, even if it is the structure which each separated and became independent without providing the connection part 5, the intended purpose is enough Needless to say, this is achieved.

  Further, as shown in each embodiment, although the frame member 1 is provided with the engaging means 6, the outer shape as a whole is substantially cylindrical with rounded corners, so-called curved surfaces. Since it is formed, there are almost no projections from the frame member 1, and handling during transportation and work is easy, and consideration is given to providing high safety.

  Further, although not shown below, the lock claw 9 can also adopt a structure in which the end frame portion 4A is directly connected from the edge of the peripheral frame portion 4A1 without providing the vertical end plate 4A2. Moreover, although the example applied to the straight tubular joint and the cheese-shaped joint is shown in the illustrated example, it is needless to say that the present invention can also be applied to an elbow-shaped joint.

  Further, the engaging means 6 has a structure that cannot be detached. The term “non-detachable” as used herein includes a meaning that it does not deviate unless at least an artificial external force is applied. Therefore, it includes a structure in which the engaging claw 6A can be artificially operated to be detached from the engaging hole 6B. Of course, it goes without saying that a structure that does not deviate even by an artificial operation may be used if necessary.

1 is a partially cutaway exploded perspective view showing a first embodiment and showing its characteristic configuration. FIG. FIG. 3 is a partially cutaway plan view showing the assembly completion state of the first embodiment. It is an expanded horizontal sectional view of the principal part. It is a partially cutaway enlarged longitudinal section of the main part. It is an expansion explanatory perspective view of the principal part which shows an engaging means. It is a partially cutaway exploded perspective view showing Example 2 and showing its characteristic configuration. It is a partially notched top view which shows the assembly completion state of 2nd Example. It is a partially cutaway exploded perspective view showing Example 3 and showing the characteristic configuration. 10 is an enlarged explanatory perspective view of a main part of Example 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Frame member 2 ... Joint 3 ... Heat insulating material cover 3A ... Peripheral surface 3B ... Vertical surface 3C ... Other peripheral surface part 3D ... Half-divided body 3F ... Hinge connection part 4 ... Divided body 4A ... End frame part 4B ... Connection frame part 4C ... Intermediate frame 4D ... One side surface 4E ... Open side 4F ... Extended connecting frame portion 5 ... Connecting portion 6 ... engaging means 6A ... engaging piece 6A1 ... hanging strip 6A11 ... hanging strip 6A2 ... projection 6A21 ... locking Piece 6B ... engaging hole 6B1 ... locking frame 7 ... fluid pipe 8 ... hole 9 ... lock claw 10 ... heat insulating material

Claims (7)

The frame member surrounding the heat insulating material cover that covers the joint is composed of a pair of divided bodies that are divided along a virtual plane parallel to the axis of the joint, and at least an end portion of the heat insulating material cover. The pair of divided bodies are integrated with each other when they surround the heat insulating material cover, and engage with the heat insulating material of the fluid pipe connected to the joint. In addition, a heat insulating material cover presser of a pipe joint, which is integrally provided with a lock claw for fixing its position. The frame member surrounding the heat insulating material cover that covers the joint is composed of a pair of divided bodies that are divided along a virtual plane parallel to the axis of the joint, and this divided body is at least the end of the joint of the heat insulating material cover. An end frame portion that surrounds the peripheral surface corresponding to the portion and the vertical end surface that follows this, and a connecting frame portion that connects the end frame portions and encloses and surrounds at least a part of the other peripheral surface portion of the heat insulating material cover. The pair of divided bodies are integrally formed with each other by engaging means that cannot be detached when surrounding the heat insulating material cover, and the end frame portion is connected to a joint. A heat insulating material cover presser of a pipe joint, which is integrally provided with a lock claw that engages with a heat insulating material and fixes its position. At least a pair of the lock claws are provided opposite to each other at symmetrical positions around the axis of the fluid pipe, or a plurality of lock claws are provided at predetermined positions in the circumferential direction at symmetrical positions around the axis of the fluid pipe. In addition, the heat insulating material cover presser of the pipe joint according to claim 1 or 2, wherein the central lock claw is set to have a protruding length shorter than that of the other. The heat insulation cover presser of a pipe joint according to any one of claims 1 to 3, wherein at least an extension end side of the lock claw is provided toward a center side of the joint. The engagement means that cannot be detached comprises an engagement claw provided in one divided body and an engagement hole provided in the other divided body and forcibly fitting the engagement claw. A heat insulating material cover presser of the pipe joint according to 2. The heat insulating material cover presser of a pipe joint according to any one of claims 1 to 5, wherein the pair of divided bodies are configured to be folded back or separated at a connecting portion on one side surface thereof. The heat insulating material cover presser of the pipe joint according to any one of claims 1 to 6, wherein the frame member has a rounded corner portion and has a curved surface shape.

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