JP4094527B2 - Seal joint for joints - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a joint for joints for joints, and in particular, a continuous concrete frame or pipe, such as a reservoir or a water basin for storing domestic water or industrial water, a water supply / sewerage channel, a concrete block for preventing falling rocks, etc. The present invention relates to a joint for waterproofing joints for preventing joint leakage and earth and sand intrusion.

FIG. 8 is a view showing the external shape of a conventional joint for joints for joints, and FIG. 9 is an enlarged cross-sectional view of the IX-IX line shown in FIG.
With reference to these drawings, the joint water-stop joint 61 is integrally formed of an elastic body such as natural rubber, and a stress material such as natural fiber is embedded therein. A convex portion 66 having an inverted U-shaped cross section is formed at the center in the width direction, and a pair of sheet bodies 65 a and 65 b are formed on both sides of the convex portion 66. Further, on the lower surface of each of the sheet body 65a and the sheet body 65b, a pair of water stopping ridges 67a, a water stopping ridge 67b, a pair of water stopping ridges 68a, A protrusion 68b is formed.

  At the time of use, the joint water stop joint 61 is lowered and placed in the direction of the arrow so as to cover the upper part of the joint part 63 formed between the opposing housings 62a and 62b. In this state, as shown in (1) of FIG. 9, between the sheet body 65a and the water stopping ridge 68a and the water stopping ridge 68b in the portion between the water stopping ridge 67a and the water stopping ridge 67b. The sheet body 65b is fixed to each of the housing 62a and the housing 62b using a fixing tool (not shown). In this way, the joint portion 63 is sealed by the joint water stop joint 61.

  Next, it is assumed that the case 62a and the case 62b are moved or displaced due to an earthquake or the like, and the interval between the joints 63 is changed from the state when the joints 61 are attached. This state is shown in (2) of FIG. In this example, the interval between the joint portions 63 is widened, but the change is absorbed by the convex portion 66 of the joint for water stop 61 in a flat state, thereby leaking water from the joint portion 63. Etc. are prevented.

In the conventional joint for joints as described above, there is no particular problem with respect to the joint part that is linear in plan view as described above. However, in the case where the joint portions intersect in a plan view, it cannot be said that the conventional joint water-stopping joint can exhibit a sufficient water-stopping performance when the joint is opened widely.
FIG. 10 is a perspective view showing an external shape of a joint for joints used for such joints having a cross shape in plan view.

  Referring to the drawing, each of four casings 62a to 62d is arranged so as to face each other in a planar state. And the joint part 63a-joint part 63d formed of these housings has a cross shape in planar view.

  On the other hand, the joint water-stop joint 70 corresponding to such a cross-shaped joint part has a first sheet part 72, a second sheet part 74, a third sheet part extending from the center part in a direction orthogonal to each other in the horizontal direction. The sheet portion 76 and the fourth sheet portion 78 are formed. The first sheet portion 72 has a rectangular sheet shape, and a first convex portion 73 having an inverted U-shaped cross section extending in the longitudinal direction is formed at the center thereof. Similarly, the second sheet portion 74 is formed. Is formed with a second convex portion 75, a third convex portion 77 with respect to the third sheet portion 76, and a fourth convex portion 79 with respect to the fourth sheet portion 78. Yes. And these sheet | seat parts are integrally molded so that it may be connected in the state mutually faced | matched in the center part.

  At the time of use, the center portion of the joint joint 70 for joints is arranged so as to be located on the intersection of the housing 62a to the joint portion 63d, and the first protrusion 73, the second protrusion 75, the second The third convex portion 77 and the fourth convex portion 79 are installed on the casings 62a to 62t so that the formation directions thereof correspond to the joint portions 63a to 63d. In this state, the attachment is completed by fixing the joint water-stopping joint 70 to the housing 62 using the fixing tool (not shown) as described above.

  However, in such joint water-stopping joints, the end portions of the first convex portion 73, the second convex portion 75, the third convex portion 77, and the fourth convex portion 79 are joint water-stopping joints. They are directly connected to each other at the center of the joint 70. Therefore, when the housing 62 moves so that each space | interval of the joint part 63a-joint part 63d spreads, the joint water stop joint 70 cannot fully follow the change. For example, the case where the space | interval of the joint part 63a and the joint part 63c spreads is assumed. In this case, the first convex portion 73 and the third convex portion 77 of the joint waterproof joint 70 change so as to be easily flattened, but the second convex portion 75 and the fourth convex portion that are orthogonal thereto. 79 is not easily deformed in its axial direction. That is, the connection part of the center part of the 1st convex part 73 and the 3rd convex part 77 means that it cannot fully deform | transform when a joint is opened widely. For this reason, the sealing performance of the joint waterproof joint 70 may be reduced, and water leakage from the joint may occur.

  This invention was made in order to solve the above subjects, and it aims at providing the water-stop joint for joints in which a water-stop performance does not fall also to the joint part which a housing cross | intersects.

  In order to achieve the above object, the invention according to claim 1 is a joint for sealing joints for sealing joints intersecting each other in a housing, and has flexibility and water tightness. A first sheet portion having a sheet shape that extends in the horizontal direction and is stretchable in a horizontal direction orthogonal to the first horizontal direction, and has flexibility and water-tightness, and is attached to one end of the first sheet portion. One end is connected, extends in a second horizontal direction orthogonal to the first horizontal direction, and expands and contracts in a horizontal direction orthogonal to the second horizontal direction, and a flexible second sheet portion. And one end of the second sheet portion is connected to one end of the second sheet portion and extends in a third horizontal direction orthogonal to the second horizontal direction, and extends in the direction in which the first sheet portion extends. A sheet-shaped second sheet that is located on the extension and can be expanded and contracted in a direction perpendicular to the third horizontal direction. The sheet portion has flexibility and precision and is connected to each of the first sheet portion, the second sheet portion, and the third sheet portion in a watertight manner so as to cover each connection portion. It is composed of an expansion / contraction portion that can expand and contract in both the first horizontal direction and the second horizontal direction.

  If comprised in this way, even if the space | interval of the joint part which cross | intersects a T type will change, an expansion-contraction part will absorb the change.

  According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the first sheet has flexibility and water tightness, one end of which is connected to one end of the third sheet portion, and the third horizontal direction. And a fourth sheet portion that extends in a fourth horizontal direction orthogonal to the second sheet portion and is positioned on an extension in the direction in which the second sheet portion extends, and is extendable in a direction orthogonal to the fourth horizontal direction. The stretchable part is connected in a watertight state so as to cover the connection part of the fourth sheet part.

  If comprised in this way, even if the space | interval of the joint part which cross | intersects a cross shape will change, an expansion-contraction part will absorb the change.

  According to a third aspect of the invention, in the configuration of the second aspect of the invention, each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion has a rectangular sheet shape. In addition, a convex portion that is bent in a U-shaped cross section extending in the longitudinal direction is formed at the central portion, and the sheet portion excluding the convex portion is integrally formed so as to be connected to each other. The outer peripheral edge of each of the side walls has a convex shape of each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion. And it adhere | attaches along a sheet | seat part.

  If comprised in this way, the expansion-contraction part adhere | attached on the sheet | seat part integrally molded will absorb the change of the space | interval of a joint part.

  According to a fourth aspect of the invention, in the configuration of the second aspect of the invention, each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion has a rectangular sheet shape. A convex portion that is bent in a U-shaped cross section extending in the longitudinal direction is formed at the central portion thereof, and the stretchable portion has a box shape with one surface open, and a first sheet portion is provided on each of the side walls. The convex portions of the second sheet portion, the third sheet portion, and the fourth sheet portion are connected, and the first sheet portion, the second sheet portion, and the third sheet are connected to the outer peripheral edges of the side walls. The end portions of the sheet portion excluding the convex portions of the sheet portion and the fourth sheet portion are connected, and are expanded and contracted with each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion. The part is formed integrally.

  If comprised in this way, each of a sheet | seat part and an expansion-contraction part will be integrally molded.

  The invention according to claim 5 is a joint joint for joints for closing joint parts intersecting each other in the housing, and has an opening formed in the center part thereof, has water tightness, and can be bent in any direction. And a sheet body having shape retention, and a stretchable body that is watertight, is connected to the sheet body in a watertight state so as to cover the opening, and is freely deformable with respect to the deformation of the sheet body around the opening. It is equipped with.

  If comprised in this way, a sheet | seat body will deform | transform freely, in the state holding the watertight state by an expansion-contraction body.

  According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the present invention, the sheet body is laid in a flat shape, and is flexible in any direction and has a shape-retaining property, watertightness and flexibility. The elastic body is a sheet-shaped elastic body in which a base material is embedded, and the stretchable body has water-tightness and flexibility, and has a box shape with one side open, It is connected so as to cover the opening in a watertight state.

  If comprised in this way, the deformation | transformation state of a sheet | seat body will be stabilized, and attachment of an expansion-contraction body will become easy.

  As described above, since the invention according to claim 1 absorbs the change even if the distance between the joints intersecting with the T-shape is changed, the water stopping performance even if the position of the frame is shifted due to an earthquake or the like. Does not drop.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 can be applied to an earthquake or the like because the expansion and contraction part absorbs the change even if the interval between the joints intersecting the cross shape changes. Even if the position of the frame is shifted, the water stop performance does not deteriorate.

  In addition to the effect of the invention of claim 2, the invention described in claim 3 has an expansion / contraction part bonded to the sheet part absorbs a change in the interval of the joint part. By adding an expansion / contraction part, it becomes possible to obtain an efficient water stop joint.

  In the invention according to claim 4, in addition to the effect of the invention according to claim 2, since each of the sheet portions and the stretchable portion are integrally formed, handling as a waterproof joint is facilitated and usability is improved.

  In the invention according to claim 5, since the sheet body is freely deformed in a state where the watertight state by the stretchable body is maintained, the shape can be freely changed around the opening according to the arrangement state of the joint. , Improve usability.

  In addition to the effect of the invention described in claim 5, the invention described in claim 6 is a highly reliable waterproof joint since the deformation state of the sheet body is stabilized and the elastic body can be easily attached.

  FIG. 1 is an exploded perspective view showing an external appearance of a joint joint for joints according to a first embodiment of the present invention before assembly, and FIG. 2 is a joint joint for joints in a state assembled from the state of FIG. It is the perspective view which showed the external appearance shape.

  With reference to these drawings, the joint water-stop joint 13 includes a sheet body 15 and a box body 16. The basic structure of the sheet body 15 is the same as that of the joint water-stop joint 70 shown in the conventional example of FIG. 10, but the structure of the central portion is clearly different. That is, the first convex portion 19 formed on the first sheet portion 18, the second convex portion 21 formed on the second sheet portion 20, and the second convex portion formed on the third sheet portion 22. The third convex portion 23 and the fourth convex portion 25 formed on the fourth sheet portion 24 are not connected so as to face each other in the central portion, and in a state where a predetermined interval is left between them, Is formed. Correspondingly, a substantially square-shaped opening 27 is formed at the center thereof. The first sheet portion 18 and the first convex portion 19 are made of a material having flexibility and watertightness such as natural rubber, and the sheet body 15 is integrally formed as a whole.

  On the other hand, the box 16 is formed of a flexible and watertight material such as natural rubber, and has a box shape with a lower surface open. That is, a square sheet-shaped bottom portion 28, rectangular sheet-shaped side wall portions 29a to 29d extending vertically downward from the outer edge of the bottom portion 28, and laterally outward from the lower edges of the side wall portions 29a to 29d. It is comprised from the rectangular sheet-shaped flange part 30a-flange part 30d extended toward the direction.

  At the time of assembly, the box body 16 is lowered with respect to the center portion of the sheet body 15, the box body 16 is deformed so as to follow the shape of the center portion of the sheet body 15, and these are bonded with, for example, an adhesive. Specifically, with respect to the end of the first convex portion 19 of the first sheet portion 18 on the center side, the flange portion 30a is caused to follow the outer surface while the side wall portion 29a of the box 16 is being deformed. The both end portions of the flange portion 30a are deformed so as to be in contact with the upper surface of the first sheet portion 18. Similarly, the second convex portion 21, the third convex portion 23, and the fourth convex portion 25 are brought into a close contact state by deforming the corresponding side wall portion 29 and flange portion 30 of the box body 16. Glue. FIG. 2 shows the appearance of the joint waterproof joint 13 with the box body 16 attached to the sheet body 15 in this way.

  FIG. 3 corresponds to an enlarged cross-sectional view taken along the line III-III shown in FIG. 2 and shows a state in which the joint water-stopping joint shown in FIG. 2 is mounted on the housing constituting the cross-shaped joint part. FIG.

  With reference to (1) of FIG. 3, the flange part 30a is adhere | attached on the edge part by the side of the center part of the 1st convex part 19, and the side wall part 29a connected to the flange part 30a is largely bent by this attachment. It is in a state. Similarly, a flange portion 30c is bonded to the center side end of the third convex portion 23, and similarly, the side wall portion 29c is attached in a state of being largely bent. With the deformation of the side wall portion 29a and the side wall portion 29c, the bottom portion 28 of the box body 16 is also deformed as shown in the figure. In addition, the attachment state of the box 16 with respect to the center part of the 2nd convex part 21 and the center part of the 4th convex part 25 is the same as that of (1) of FIG. And the 1st convex part 19 and the 3rd convex part 23 are not mutually connected in the center part. Therefore, in the figure, the end portion on the center side of the fourth convex portion 25 appears between them. In this state, it is assumed that the casing 32a and the casing 32b are moved by an earthquake or the like, and the interval between the joint portions 33 is more open than that at the time of installation of the box body 16.

  FIG. 3B is a cross-sectional view showing such a state.

  Referring to the figure, when the housing 32a and the housing 32b move in the direction of the arrow, the interval between the joint portions 33 is increased accordingly. However, since the first convex portion 19 and the third convex portion 23 are not connected to each other as described above, the directions are separated from each other with the movement of the housing 32a and the housing 32b to which they are fixed. To move smoothly.

  On the other hand, the side wall portion 29a connected to the first convex portion 19 via the flange portion 30a is greatly bent at the time of attachment, so that the deformed state is accompanied by the movement of the first convex portion 19. Smoothly follows this with a slight change. Similarly, the side wall portion 29c connected to the third convex portion 23 via the flange portion 30c follows smoothly. For this reason, an excessive deformation | transformation does not arise with respect to the box 16, and the sealing performance is maintained, without reducing. In this example, it is assumed that the casing 32a and the casing 32b are moved away from each other. However, even if the casing is moved in a direction orthogonal to these, the change is similarly caused. Is sufficiently absorbed by the deformation of the box 16. Further, even when the housing moves so that all the intervals between the cross-shaped joint portions are opened simultaneously, the movement can be easily absorbed by the curved shape of the side wall portion 29 of the box 16. Become.

  FIG. 4 is a schematic perspective view showing the appearance of a joint for joints according to a second embodiment of the present invention.

  Referring to the drawings, in this embodiment, different from the previous embodiment, joint water-stop joint 13 is formed by integral molding. Specifically, a box 35 serving as an expansion / contraction part is formed at the center, and the first sheet part is provided on each of the side wall parts 37 connected to the outer peripheral edge of the dome-shaped ceiling part 36 constituting the box 35. 18 first convex portion 19, second convex portion 21 of second sheet portion 20, third convex portion 23 of third sheet portion 22, and fourth convex portion 25 of fourth sheet portion 24. Are connected as if they were butted together. The first sheet portion 18, the second sheet portion 20, the third sheet portion 22, and the fourth sheet portion 24 are integrally connected to the lower edge of the side wall portion 37.

  Since the ceiling portion 36 of the box 35 is formed in a dome shape, for example, when the first sheet portion 18 and the third sheet portion 22 move away from each other with the movement of the housing. First, the ceiling part 36 absorbs the movement by being deformed into a planar shape via the side wall part 37. Similarly, even when the second seat portion 20 and the fourth seat portion 24 are moved away from each other, the movement is similarly absorbed by the deformation of the ceiling portion 36. In this way, the box 35 can absorb deformation due to the movement of the sheet portion and the convex portion constituting the sheet body in any direction.

  In this joint water-stop joint 13, the box body 35 does not have an adhesive portion, so that the reliability as a water-stop performance is further enhanced and the handling as a water-stop joint becomes easy.

  FIG. 5 is a view showing the appearance of a joint for joints according to a third embodiment of the present invention. FIG. 6 is a partially broken view of the sheet body shown in FIG. It is the schematic perspective view shown by.

  With reference to these drawings, the sheet body 39 has a shape having a cutout portion 40a to a cutout portion 40d in which four corners are cut out in a square shape from a square sheet shape. Specifically, the sheet body 39 is made of a stainless wire and arranged in parallel in one direction at a predetermined interval, and the sheet body 39 is made of a similar stainless wire and is orthogonal to the arrangement direction of the first wire 46. A base material 44 having a mesh shape composed of second wire rods 47 arranged at predetermined intervals in the direction, and an elastic body 45 made of, for example, synthetic rubber or the like, formed so that the base material 44 is embedded in the center thereof. It consists of and. Thus, the sheet body 39 is configured to be able to bend in any direction. And since the base material 44 is embed | buried in the inside, it becomes the sheet | seat body 39 which has what is called shape retention property in which the shape after bending is maintained. As a result, the sheet body 39 can be deformed into a predetermined shape and the deformed state is maintained.

  Returning to FIG. 5, a square-shaped opening 41 is formed in the central portion of the sheet body 39, and the opening 41 is blocked by a box-shaped box body 42 that is open at the bottom so as to block the opening 41. It is mounted in a watertight state.

  (1) of FIG. 7 is an enlarged sectional view of the VII-VII line shown in FIG.

  Referring to the figure, box 42 has a square sheet-shaped bottom 49, side wall 50 extending downward from the outer periphery of bottom 49, and flange 51 extending horizontally from the lower edge of side wall 50 outward. It consists of and. The box 42 is made of a flexible and watertight material such as synthetic rubber. And the flange part 51 of the box 42 is adhere | attached on the upper surface of the part of the sheet | seat body 39 around the opening 41 so that watertightness is maintained.

  Next, the case where the joint joint water stop joint 13 composed of the sheet body 39 and the box body 42 configured as described above is used will be described.

  In use, for example, the sheet body 39 is deformed so that the portion between the two alternate long and two short dashes lines extending in the vertical direction in FIG. This state is shown in the enlarged sectional view of (2) of FIG.

  Referring to the figure, the convex portions 52 are formed so that the portions of the sheet body 39 located on both sides of the box body 42 are deformed so as to approach the direction of the arrow so as to have a convex shape upward. Since the sheet body 39 is configured to be bendable and have shape retention as described above, the state in which the convex portion 52 is formed is maintained. With this deformation, the flange portion 51a and the flange portion 51b of the box body 42 bonded to the upper surface of the sheet body 39 move so as to approach each other. Along with this movement, the side wall portion 50a and the side wall portion 50b constituting the box body 42 are also deformed so as to bend inward. And with the formation of the convex part 52, the side wall part 50c of the box 42 connected to this will also deform | transform so that the upper surface of the convex part 52 may be followed. Thus, even if the box body 42 is deformed, the flange portion 51 is bonded to the upper surface of the all-around sheet body 39, so that there is no possibility that the water stopping performance of the sheet body 39 with respect to the opening 41 is lowered.

  Next, with reference to the position of the two-dot chain line formed in the horizontal direction in FIG. 5, the sheet body 39 is deformed so that the portion between the two-dot chain lines has a convex shape upward as described above. Even when the sheet body 39 is deformed in this way, the side wall portion 50 and the flange portion 51 of the box body 42 follow this deformation, and there is no possibility that the water stop performance due to the box body 42 will deteriorate. In addition, although it becomes the relationship where a convex part cross | intersects up and down and right and left by such deformation | transformation, since the opening 41 is formed in the center part used as the intersection, these deformation | transformation is easy without being buffered mutually. Can be done.

  In use, after the sheet body 39 is installed on the corresponding cross-shaped joint portion with the convex portions formed in the vertical direction and the horizontal direction as described above, the sheet body 39 is fixed to the corresponding casing using a fixture. To do. When the housing moves so that the space between the joints is widened by an earthquake or the like, the sheet body 39 is deformed from the state shown in FIG. 7 (2) to the state shown in FIG. 7 (1). It will be. The deformation of the sheet body 39 tends to return to the original state before the deformation, and the absorption of the expansion of the joint portion accompanying the movement of the housing is performed very smoothly.

  In this embodiment, since the box 42 can be attached to the flat sheet 39, the bonding through the flange 51 is facilitated, and the reliability of the water stop effect is improved. To do.

  In each of the above-described embodiments, the cross-shaped joint portion is targeted. However, the present invention can be similarly applied to a T-shaped joint portion. In this case, as corresponding to the first and second embodiments, the sheet portion may be configured to extend only in three directions, and the box as the expansion / contraction portion may have a similar shape.

  In the first embodiment, the box as the expansion / contraction part has a flange part. However, this is not always necessary, and the lower edge of the side wall part is directly connected to the sheet part or the convex part. You may comprise so that it may connect. In addition, the expansion / contraction part does not necessarily need to have a box shape, and may have another shape as long as the intersection such as the sheet part can be covered in a watertight state.

  Furthermore, in the first and second embodiments described above, the sheet portion has a rectangular sheet shape, but the sheet shape may be other than a rectangular shape.

  Further, in each of the above embodiments, the box is formed on the upper surface together with the convex portion, but a larger concave portion is formed above the joint portion of the housing, and the box and the convex portion are formed on the lower surface side. And you may make it use in the state accommodated in the recessed part.

  Furthermore, in the third embodiment described above, the shape-retaining property of the sheet body is exhibited by the mesh-like substrate, but a substrate that exhibits other shape-retaining properties such as a metal plate is embedded. You may comprise a sheet | seat body.

  Furthermore, in each of the above embodiments, natural rubber is used as the flexible and watertight material constituting the joint. However, other materials such as synthetic rubber and synthetic resin may be used as long as they have these characteristics. Even if the material is used, the same effect can be obtained.

  Furthermore, in each of the above-described embodiments, the bottom of the concrete frame used for the reservoir or the like and the joint water stop of the wall surface are targeted. Needless to say, it may be used to prevent intrusion.

It is the perspective view which showed the state before the assembly of the water-stopping joint for joints by 1st Embodiment of this invention. It is the perspective view which showed the state after the assembly of the water stop joint for joints shown in FIG. It is an expanded sectional view of the III-III line shown in FIG. It is the perspective view which showed the external appearance shape of the waterproof joint for joints by 2nd Embodiment of this invention. It is the top view which showed the external appearance shape of the water stop joint for joints by 3rd Embodiment of this invention. FIG. 6 is a schematic perspective view illustrating a state in which a part of the sheet body illustrated in FIG. 5 is taken out and partially broken. It is an expanded sectional view of the VII-VII line shown in FIG. It is the disassembled perspective view which showed the attachment state of the conventional waterproof joint for joints. It is an expanded sectional view of the IX-IX line shown in FIG. It is the disassembled perspective view which showed the attachment state of the water stop joint for joints used for the conventional cross-shaped joint part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 13 ... Sealing joint for joints 15, 39 ... Sheet body 16, 35, 42 ... Box 18 ... 1st sheet part 19 ... 1st convex part 20 ... 2nd sheet part 21 ... 2nd convex part 22 ... 3rd sheet part 23 ... 3rd convex part 24 ... 4th sheet part 25 ... 4th convex part 33 ... Joint part 41 ... opening In addition, the same code | symbol in each figure shows the same or an equivalent part.

Claims (6)

A joint for joints for sealing joints intersecting in the frame,
A sheet-shaped first sheet portion having flexibility and watertightness, extending in the first horizontal direction and extending and contracting in the horizontal direction perpendicular to the first horizontal direction;
It has flexibility and water-tightness, one end of which is connected to one end of the first sheet portion, and extends in a second horizontal direction perpendicular to the first horizontal direction, and the second sheet A second sheet portion having a sheet shape that is extendable in the horizontal direction perpendicular to the horizontal direction;
It has flexibility and water tightness, one end of which is connected to the one end of the second sheet portion, and extends in a third horizontal direction perpendicular to the second horizontal direction, and the first sheet A third sheet portion having a sheet shape that is located on an extension in a direction in which the sheet portion extends and is extendable in a direction orthogonal to the third horizontal direction;
It has flexibility and watertightness, and is connected to the first sheet part, the second sheet part, and the third sheet part in a watertight state so as to cover each connection portion of the first sheet part, the second sheet part, and the third sheet part, A joint for water-stopping joints, comprising an expansion / contraction portion that can expand and contract in both the horizontal direction and the second horizontal direction. It has flexibility and water-tightness, one end of which is connected to the one end of the third sheet portion, and extends in a fourth horizontal direction orthogonal to the third horizontal direction. A sheet-shaped fourth sheet portion that is positioned on an extension in the direction in which the sheet portion extends and is extendable in a direction orthogonal to the fourth horizontal direction;
The joint for waterproofing according to claim 1, wherein the stretchable part is connected in a watertight state so as to cover a connection part of the fourth sheet part. Each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion has a rectangular sheet shape, and has a U-shaped cross section extending in the longitudinal direction at the center portion thereof. Are formed integrally so that only the sheet portions excluding the protrusions are connected to each other,
The expansion / contraction part has a box shape with one side open, and the outer peripheral edge of each side wall is the first sheet part, the second sheet part, the third sheet part, and the fourth sheet. The waterproof joint for joints according to claim 2, wherein the joint is bonded along each of the convex portion and the sheet portion of the sheet portion. Each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion has a rectangular sheet shape, and has a U-shaped cross section extending in the longitudinal direction at the center portion thereof. A convex part bent to
The expansion / contraction part has a box shape with one side opened, and the first sheet part, the second sheet part, the third sheet part, and the fourth sheet part are provided on each of the side walls. Each of the convex portions is connected, and the convex portions of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion are provided on the outer peripheral edge of each of the side walls. The end of the removed sheet part is connected,
3. The joint according to claim 2, wherein each of the first sheet portion, the second sheet portion, the third sheet portion, and the fourth sheet portion and the stretchable portion are integrally formed. Water stop fitting. A joint for joints for sealing joints intersecting in the frame,
An opening is formed in the central portion, has a water tightness, and can be bent in any direction and has a shape retaining property, and
A joint joint stop comprising a watertight, and a stretchable body that is connected to the sheet body in a watertight state so as to cover the opening, and is freely deformable with respect to the deformation of the sheet body around the opening. Water fittings. The sheet body is laid in a flat shape, is a base material that can be bent in any direction and has shape retention, and a sheet that has water tightness and flexibility, and in which the base material is embedded. Made of elastic body,
The joint according to claim 5, wherein the stretchable body has water tightness and flexibility, has a box shape with one surface open, and is connected so as to cover the opening in a watertight state on the one surface. Water stop fitting.

Images