JP4883945B2 - Water stop structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure sufficient water cut-off performance against the gap between the head of a screw and its screw hole even if the axis of the screw hole formed in a connecting member should disagree with that of the screw used for fastening the connecting member with a member to be connected. <P>SOLUTION: In the cut-off structure according to this invention, a spherical surface 11a, a part of a sphere, to accept the head 3a of a screw 3 as well as a pit 11 having a screw hole 11c is formed at a predetermined position on a vertical frame 2a that serves as a connecting member, and a packing 12 is provided, which has a spherical surface 12a corresponding to the spherical surface 11a of the pit 11 and a part to absorb the axial differences of the screw 3 penetrating the center of the pit. The screw 3 equipped with the packing 12 is inserted into the screw hole 11c of the pit 11 and screwed into a ground material 6, i.e., the member to be connected. By this, the difference absorbing part of the packing absorbs the axial differences of the screw and also the spherical surface of the packing is brought into contact with the spherical surface of the pit to cut off water. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a water-stopping structure between a screw and a connecting member when the connecting member is connected to a member to be connected arranged at a portion where water may be splashed using the screw.

  A waterproof cover for equipment installed outdoors, a window or shutter frame attached to the exterior wall of the building, or a door frame attached to the bathroom, etc. It may be fixed to a connected member such as a material using a screw. Since such a connecting member is splashed with rainwater or hot water used in the bathroom, it is necessary to form a water stop structure between the connecting member and the head of the screw. For this reason, it is common to have a water-stop structure by sandwiching a packing material such as rubber between the connecting member and the screw.

  For example, in Patent Document 1, when attaching a glass holding frame that attaches glass to a metal sash frame and holds the glass using a countersunk screw, an inner surface of a conical countersunk hole formed in the glass holding frame, A disc sheet-like packing having flexibility and a screw insertion hole provided in the center is interposed between the conical bottom surface of the screw head. In this technology, by tightening the countersunk screw into the screw hole provided in the sash frame, the packing is sandwiched between the inner surface of the countersink hole and the conical bottom surface of the screw head, thereby allowing watertightness. Can be securely held.

  On the other hand, in the construction of a window provided on the outer wall surface of a house or a door provided on the wall surface of a bathroom, an opening portion in which a base material (connected member) is arranged at a predetermined position is provided, and a window or window is provided in the corresponding opening portion. The door frame (connecting member) is fitted, and it is attached through a tapping screw from the frame to the base material by on-site construction. In this case, since the base material to which the frame is attached is assembled at each site, the accuracy of the attachment position does not reach that of the factory-produced product. Therefore, it is difficult to obtain the accuracy of the position of the pilot hole even if the screw hole (preparation hole) that serves as a positioning guide when contacting the screw tip is processed in advance at the factory or the like. On the other hand, there is a possibility that the mounting accuracy of the frame body may be lowered, so a pilot hole is not formed in the base material, and a conical screw hole corresponding to the conical shape of the head of a countersunk screw that is a tapping screw is provided only in the frame body. In general, the tapping screw is swallowed into the base material by an electric tool.

No. 6-25593

  When connecting the connecting member to the connected member using a countersunk screw, good water stopping performance is exhibited if the conical surface of the screw hole formed in the connecting member and the conical surface of the head of the countersunk screw do not contact evenly. I can't. That is, when a parallel shift, a crossing crossing or a parallel shift and a crossing shift occur simultaneously between the countersunk screw core and the screw hole core, the conical surface of the screw hole and the head of the countersunk screw It becomes impossible to contact with the conical surface of the part evenly, and there arises a problem that good water stopping performance cannot be exhibited.

  As shown in Patent Document 1, in an aluminum sash member that can process a countersunk hole and a screw hole with high accuracy in a sash manufacturing factory equipped with processing equipment, the cores of both must be matched. Is easy, and the above problem can be avoided.

  However, in the case where the work of attaching the frame of the house window or bathroom door described above to the base material is performed on site, the base material does not have a pilot hole, and the diameter of the screw hole that is pre-processed in the frame also has Since the tapping screw is set to be somewhat large so that the thickness of the tapping screw is flexible, it is difficult to keep the flat position and angle at which the tapping screw is screwed in. Skill and patience are required to fasten with the core of the screw hole provided in the body. Therefore, problems such as increased worker fatigue and a longer construction period arise. In particular, when attaching the frame body to the base material as described above, there are a part where the screw is installed horizontally, a part where the screw is installed downward, and a part where the screw is installed upward, and the work posture is not stable, resulting in increased fatigue. There is a problem of doing.

  It is an object of the present invention to provide a screw hole core and a screw hole, even if the screw hole core formed in the connecting member and the screw core used when connecting the connecting member to the connected member do not match. It is providing the water stop structure which can ensure the water stop performance in between.

In order to solve the above problems, the water stop structure according to the present invention is a water stop structure between a screw and a connecting member when the connecting member is connected and fixed to a connected member using a screw, and the connection The member has a spherical surface formed of a part of a sphere, and a recess having a screw hole for screw insertion having a diameter larger than the diameter of the screw is formed at the bottom, and the recess of the coupling member includes the recess and has a spherical surface of equal diameter to the diameter of the spherical surface of the screw packing through-hole is formed to be inserted is fitted, the screw, while being inserted into the through hole and the threaded hole of the packing, the It is characterized by being fastened to the connected member.

  In the water stop structure, the packing is formed on the spherical surface corresponding to the spherical surface constituting the recess formed in the connecting member on the outer peripheral surface, and the diameter of the screw hole and the diameter of the screw formed in the recess in the central portion. A packing body in which a through-hole having a corresponding diameter is formed and a counterbore part having a flat surface perpendicular to the through-hole is formed at an end of the through-hole, and is fitted into the counterbore part of the packing body and is flat And a contact body that contacts the surface.

  In the water stop structure of the present invention, when the screw is inserted into the recess formed in the connecting member to be connected and fixed to the connected member, the screw is misaligned or crossed parallel to the core of the screw hole provided in the recess. Even when a misalignment or a misalignment in which a misalignment that intersects with a parallel misalignment occurs, stable water stopping performance can be exhibited.

  That is, when a misalignment occurs in which the screw core is displaced in parallel with the screw hole core provided in the recess, the misalignment can be absorbed by the absorbing portion provided in the packing. Also, when a misalignment occurs where the screw core intersects the core of the screw hole, the spherical surface of the packing moves along the spherical surface of the recess according to this misalignment (the packing rotates). This misalignment can be absorbed. Therefore, even if the screw core is misaligned with respect to the core of the screw hole, stable water stopping performance can be exhibited regardless of the misalignment.

  In particular, by constituting the packing with the packing main body and the contact body, stable water stopping performance can be exhibited regardless of the shape of the screw head.

  Hereinafter, the best mode of a water stop structure concerning the present invention is explained. The water-stop structure of the present invention ensures water-stopping performance between the connecting member and the screw to prevent water intrusion when the connecting member is connected and fixed to the connected member using a screw.

  In the present invention, the specific configuration of the connecting member and the connected member is not limited, and the connecting member is disposed in a portion where rainwater or shower water may be applied, and the connected member of the water. Any member may be used as long as it is required to prevent flooding to the side, and the connected member may be a member having a function of connecting and fixing the connecting member as described above.

  Examples of the connecting member as described above include a window frame provided on an outer wall in a house and a door frame provided in a bathroom. Examples of the connected member include a window base material provided on an outer wall in a house and a door base material provided in a bathroom. And this invention can be preferably applied as a water stop structure at the time of connecting and fixing the said frame, the base material, and other connecting members having the same function and the connected member with screws.

  In the present invention, the connecting member is formed with a sphere having a part of a sphere for receiving the head of the screw and a recess having a screw hole through which the screw is inserted. The diameter of the sphere that forms the spherical surface of the depression in the connecting member is not particularly limited, and is preferably set according to the diameter of the screw head and the diameter of the packing into which the screw head is fitted. In other words, the diameter of the spherical surface is set to such a size that the packing having a size corresponding to the thickness of the screw can be stably received and the packing can slide along the spherical surface sufficiently. It is preferable.

  The diameter of the spherical surface of the depression needs to match the diameter of the spherical surface formed on the outer peripheral surface of the packing. As described above, the recess has a certain depth, and the connecting member needs to have a thickness at least equal to the depth of the recess. However, it is not necessary for the material of the connecting member itself to have a thickness equal to the depth of the recess, and it is only necessary to realize a thickness substantially equal to the depth of the recess by plastic processing of the material.

  For example, when the connecting member is a frame of a window or door, the frame is often made of an aluminum extrusion molding material. Such a frame generally has a thin material but a large thickness as a frame. Therefore, it is possible to form a spherical surface having a predetermined depth by pressing the material of the frame body, thereby forming a recess.

  Further, the diameter of the screw hole formed in the recess is not particularly limited, and may be a value that allows a screw having a diameter assumed in advance to be inserted.

  The shape and configuration of the member to be connected in the present invention are not particularly limited, and any member for connecting and fixing the connecting member may be used. As such a connected member, there are a base material for attaching the frame of the window in the above-mentioned house to the outer wall surface of the building, a base material for attaching the frame of the bathroom door to the wall surface of the bathroom, etc. is there. These base materials are generally thin steel materials, but are not necessarily steel materials, and may be wood.

  The screw that connects and fixes the connecting member to the member to be connected may be any screw that has the above-described function, and does not limit the type or thickness of the screw. For example, when the member to be connected is wood or a steel material provided with a pilot hole, it is preferable to use a wood screw, and when the member to be connected is a steel material without a pilot hole or to connect the connecting member to the member to be connected. When it is required to easily perform the work at the time of fixing, it is preferable to use a tapping screw as the screw. In particular, in order to realize the water stop structure of the present invention, there are a flat head tapping screw, a pan head tapping screw, a truss head tapping screw, and the like, and any of them can be preferably used.

  The packing has a spherical surface that is equal to the spherical surface that forms the recess formed in the connecting member, and an absorption portion that absorbs misalignment of the screw is provided in the central portion, and the screw is disposed in the absorption portion. When the screw core is inserted into the recessed screw hole and fastened to the connected member, the core of the screw has a parallel misalignment, a misalignment in the crossing direction, or a misalignment intersecting the parallel misalignment. Even when mixed misalignment occurs, the misalignment is absorbed and the spherical surfaces are brought into contact with each other to ensure water-stopping performance.

  The absorption part provided in the packing absorbs misalignment when the center of the screw is parallel to the core of the screw hole, and the difference between the thickness of the screw and the diameter of the screw hole is absorbed. If a parallel misalignment occurs between the screw core and the screw hole core when a screw is inserted into this hole and screwed into the recessed screw hole, the screw screw The screw core is configured to be able to absorb the misalignment by moving in parallel with the core of the hole of the packing as the mating proceeds.

  In particular, the end surface of the hole formed at the center of the packing is a flat surface orthogonal to the core of the hole, and a screw body is attached to the screw head so that the contact surface is in contact with the flat surface. The contact body moves along the flat surface with the progress of the screwing with respect to the connecting member, and it is possible to absorb the parallel misalignment. The contact body is formed so as to have a dimension capable of closing the hole even if the screw core moves to any position in the hole formed in the recess of the packing. Accordingly, no gap is formed between the hole of the packing and the contact body, and sufficient water stopping performance can be exhibited.

  Although it does not specifically limit as a material which comprises the packing which has the above functions, and a contact body, From the point which ensures favorable sliding with respect to the spherical surface which comprises the hollow which comprises the hollow provided in the connection member with favorable moldability. A synthetic resin having moderate elasticity and high water resistance is preferable. Examples of such a synthetic resin include polypropylene (PP) and polyethylene (PE). However, it is a matter of course that the present invention is not limited to the above-described synthetic resin.

  Next, an embodiment of a water stop structure will be described with reference to the drawings. FIG. 1 is a front view illustrating an aluminum fitting with a folding door, which is generally used in a bathroom of a house, to which a water stop structure according to the present invention is applied. FIG. 2 is a diagram for explaining a state in which the frame of the joinery of FIG. 1 and the base inside the wall surface of the bathroom are connected and fixed. FIG. 3 is a view for explaining the water stop structure according to the first embodiment, and is a view for explaining a state in which a parallel misalignment with respect to the screw hole of the screw is absorbed. FIG. 4 is a view for explaining the water-stopping structure when the screw core has a misalignment that intersects with the misalignment parallel to the core of the screw hole.

  First, a structure in which a frame of a bathroom fitting as a connecting member is connected and fixed to a base material inside a bathroom wall as a connected member using a countersunk tapping screw will be described with reference to FIGS. In this embodiment, the frame of the bathroom joinery is used as the connecting member, and the base material inside the bathroom wall is used as the connected member, but the present invention is naturally not limited to this embodiment. When the connecting member is connected and fixed to the member to be connected by a screw, it can be applied to a part where it is required to prevent water from entering from the fastening part of the screw.

  In the figure, the folding door 1 is attached to a frame body 2 constituted by a pair of vertical frames 2a and a pair of horizontal frames 2b. This folding door 1 is connected to a pair of reversible shojis 1a via a hinge 1b and is attached so that one of the shojis 1a can be pivoted around a fulcrum (not shown) provided on the frame 2, and the other The shoji 1a is attached so as to be movable along a rail provided on the horizontal frame 2b on the lower side of the frame 2. Therefore, the folding door 1 can be opened by bending the pair of shojis 1a starting from the hinge 1b.

  The vertical frame 2a and the horizontal frame 2b constituting the frame body 2 are made of an aluminum extrusion molding material and have a hollow portion and a protruding piece. The hollow portion is arranged on the bathroom side, and the protruding piece is a dressing room. Placed on the side. Therefore, hot water or cold water is applied to the portions corresponding to the hollow portions of the vertical frame 2a and the horizontal frame 2b during bathing, and water is not applied to the protruding pieces.

  In the vertical frame 2 a of the frame body 2, a portion corresponding to the hollow portion is connected and fixed to the base material 6 by a screw 3, and the opening frame 4 is fixed to the protruding piece by a wood screw 5. In the present invention, the structure and shape of the base material 6 are not particularly limited. In this embodiment, as shown on the right side of FIG. 2, a member formed by bending a steel material into a substantially L shape, or the same As shown on the left side of the figure, it may be any of a plate-like member having a predetermined thickness, and may have a shape other than these shapes.

  In the said structure, the water stop structure which concerns on this invention is comprised between the piece of the hollow part of the vertical frame 2a, and the head 3a of the screw 3. As shown in FIG. Next, the water stop structure A according to the first embodiment will be described with reference to FIGS. As shown in the figure, the water-stopping structure A according to the present embodiment includes a recess 11 provided at a predetermined position of the vertical frame 2 a constituting the frame body 2, and a packing 12 disposed between the recess 11 and the screw 3. And is configured.

  The depression 11 formed in the vertical frame 2a is configured to include a spherical surface 11a formed of a part of a sphere and a screw hole 11c formed at the bottom of the spherical surface 11a with the core 11b as a center. Although it does not limit at all what forms the hollow 11 with respect to the vertical frame 2a, when it considers that the vertical frame 2a consists of an extrusion molding material of aluminum, it is preferable to form by press work. For this reason, in this embodiment, punches and dies (not shown) having a spherical surface equal to the spherical surface 11a and having a molded portion having a diameter equal to the diameter of the screw hole 11c are used, and the depression 11 is formed by these punches and dies. Is molded.

  The diameter of the screw hole 11c may be a value that allows the screw 3 to be inserted. If the diameter of the screw hole 11c is too large compared to the thickness of the screw 3, the core 3b of the screw 3 may be misaligned with respect to the core 11b. There is a risk that the amount of misalignment will increase. In the present embodiment, the vertical frame 2a made of an aluminum extrusion molding material is pressed to form the recess 11, and the diameter of the screw hole 11c is set to a slightly larger dimension.

  In this embodiment, a pan head tapping screw is used as the screw 3. In this tapping screw 3, the bottom surface 3c of the head 3a is formed as a surface substantially perpendicular to the core 3b.

  In the packing 12, a spherical surface 12a having the same curvature as the spherical surface 11a of the recess 11 is formed on the outer periphery, and a hole 12c through which the screw 3 is inserted coincides with the core 12b. A counterbore 12d is formed on the opposite side of the hole 12c from the spherical surface 12a, and a bottom surface 12e of the counterbore 12d is formed as a surface perpendicular to the core 12b.

  The diameter of the hole 12c formed in the packing 12 is smaller than the diameter of the screw hole 11c provided in the recess 11 or the diameter of the head 3a of the tapping screw 3, and the side surface of the tapping screw 3 is on the inner peripheral surface of the hole 12c. Even when they come into contact with each other, the value is such that no gap is generated between the head 3a.

  Further, the diameter of the counterbore portion 12d has such a value that the head 3a contacts or does not contact when the side surface of the tapping screw 3 contacts the inner peripheral surface of the hole 12c. That is, the diameters of the holes 12c and the counterbore 12d formed in the packing 12 are sufficiently larger than the thickness of the tapping screw 3 and the diameter of the head 3a, respectively.

  In the water stop structure A configured as described above, when the packing 12 is fitted into the recess 11 and the tapping screw 3 is inserted into the hole 12c of the packing 12 and fastened to the base material 6, the two-dot chain line in FIG. As shown, when the core 3b of the tapping screw 3 has a misalignment parallel to the core 11b of the screw hole 11c, the tapping screw 3 is apparently parallel inside the hole 12c and the counterbore 12d of the packing 12. Moving. Further, with the fastening of the tapping screw 3 to the base material 6, a pressing force is applied to the packing 12 from the head 3 a of the tapping screw 3, and the packing 12 presses the spherical surface 12 a against the spherical surface 11 a of the recess 11.

  For this reason, the misalignment parallel to the core 11b of the screw hole 11c of the recess 11 of the core 3b of the tapping screw 3 is absorbed by the movement of the packing 12 with respect to the hole 12c and the counterbore portion 12d. At this time, the bottom surface 3c of the head portion 3a of the tapping screw 3 is kept in contact with the bottom surface 12e of the counterbored portion 12d of the packing 12, and the hole 12c of the packing 12 is closed by the bottom surface 3c of the head portion 3a.

  Therefore, even if water is applied to the recess 11, the pressure contact of the spherical surface 12 a of the packing 12 against the spherical surface 11 a of the recess 11 and the hole 12 c of the packing 12 are blocked by the head 3 a of the tapping screw 3, and the water is stopped. There is no flooding.

  As described above, when the hole 12c and the counterbore 12d of the packing 12 are misaligned when the core 3b of the screw 3 is parallel to the core 11b of the screw hole 11c of the recess 11, the absorbing portion absorbs this misalignment. Become.

  FIG. 4 shows a state where the core 3b of the tapping screw 3 causes a misalignment in a direction crossing the parallel misalignment with respect to the core 11b of the screw hole 11c of the recess 11. That is, FIG. 4 shows a state in which the relationship between the tapping screw 3 and the packing 12 is tilted while maintaining the state of FIG. 2, and the core 3b of the tapping screw 3 is shown in the drawing with respect to the core 11b of the screw hole 11c. A rightward shift occurs and the crossing is inclined.

  As the tapping screw 3 is fastened to the base material 6 in an inclined state, a pressing force is applied from the bottom surface 3c of the head 3a to the bottom surface 12e of the counterbore 12d of the packing 12. Due to the action of this pressing force, the packing 12 rotates in the tilt direction of the tapping screw 3, and the spherical surface 12 a of the packing 12 slides along the spherical surface 11 a of the recess 11.

  When the direction of the pressing force applied from the bottom surface 3c of the head 3a coincides with the direction of the core 12b of the packing 12, the pressing force acts as a pressing force against the spherical surface 11a of the recess 11 of the spherical surface 12a of the packing 12. In addition, the packing 12 can be pressed against the recess 11 in a stable state to stop water.

  As described above, when the core 3b of the tapping screw 3 is misaligned in the direction crossing the core 11b of the screw hole 11c of the recess 11, the packing 12 rotates the angle corresponding to the crossing angle with respect to the recess 11. Move and stabilize. For this reason, when the upper surface 12f of the packing 12 is flush with the surface of the vertical frame 2a when the packing 12 is fitted into the recess 11, the end portion protrudes from the surface of the vertical frame 2a. . Accordingly, the upper surface 12f of the packing 12 is configured as an inclined surface inclined from the central portion toward the spherical surface 12a.

  Thus, even when the core 3b of the tapping screw 3 causes a misalignment in a direction crossing the parallel misalignment with respect to the core 11b of the screw hole 11c of the recess 11, the packing with respect to the spherical surface 11a of the recess 11 is provided. The pressure contact of the 12 spherical surfaces 12 a and the hole 12 c of the packing 12 are closed by the head 3 a of the tapping screw 3, so that the water applied to the recess 11 is stopped and is not immersed.

  Next, the water stop structure B according to the second embodiment will be described with reference to FIG. In the figure, the same parts as those in the first embodiment and the parts having the same functions are denoted by the same reference numerals and the description thereof is omitted.

  The water stop structure B shown in the figure is a structure in which a contact body 13 is disposed on a counterbore 12 d of the packing 12. The contact body 13 has a recess 13a for mounting the head 3a of the screw 3 and is configured such that the bottom surface 13b of the recess 13a can come into contact with the bottom surface 12e of the spot facing portion 12d.

  In particular, in this embodiment, the pan head tapping screw 3 is used as the screw 3, and the recess 13 a of the contact body 13 has a dimension that allows the pan head of the tapping screw 3 to be appropriately restrained and fitted. Is formed. Therefore, when the contact body 13 is attached to the head 3a of the tapping screw 3, the contact body 13 functions as a unit without being detached from the head 3a.

  Even in the water stop structure B configured as described above, the tapping screw 3 having the contact body 13 attached to the head 3a functions in exactly the same way as the tapping screw 3 of the first embodiment. Even when the core 3 b is misaligned with respect to the core 11 b of the screw hole 11 c of the recess 11, stable water stop performance can be exhibited.

  Next, the water stop structure C according to the third embodiment will be described with reference to FIG. The water stop structure C shown in the figure is a flat head tapping screw 3 that is a pan head tapping screw 3 as the screw 3 in the second embodiment.

  In the present embodiment, the contact body 14 is formed with a recess 14 a for receiving the countersunk head 3 a of the tapping screw 3, and the bottom surface 14 b of the recess 14 a can be in contact with the bottom surface 12 e of the counterbore portion 12 d of the packing 12. Has been.

  Even in the water stop structure C configured as described above, the tapping screw 3 having the contact body 14 attached to the head 3a functions exactly the same as the tapping screw 3 of the first embodiment. Even when the core 3 b is misaligned with respect to the core 11 b of the screw hole 11 c of the recess 11, stable water stop performance can be exhibited.

  The present invention can be used as long as waterproofness is required when connecting and fixing a connecting member to a connected member using a screw.

It is a front view explaining the aluminum fitting with a folding door generally used for the bathroom of a house to which the water stop structure concerning the present invention is applied. It is a figure explaining the state which connected and fixed the frame of joinery and the foundation | substrate inside the wall surface of a bathroom. It is a figure explaining the water stop structure which concerns on 1st Example, and is a figure explaining the state which absorbed the misalignment parallel to the screw hole of a screw. It is a figure explaining the water stop structure when the core deviation which crosses the center deviation parallel to the core of a screw hole, and crosses. It is a figure explaining the water stop structure concerning the 2nd example. It is a figure explaining the water stop structure concerning a 3rd example.

A, B, C Water stop structure 1 Folding door 1a Shoji 1b Hinge 2 Frame 2a Vertical frame 2b Horizontal frame 3 Screw, Tapping screw 3a Head 3b Core 3c Bottom 4 Opening frame 5 Wood screw 6 Base material 11 Depression 11a Spherical 11b Core 11c Screw hole 12 Packing 12a Spherical surface 12b Core 12c Hole 12d Counterbore portion 12e Bottom surface 12f Upper surface 13, 14 Contact body 13a, 14a Recessed portion 13b, 14b Bottom surface

Claims (2)

A water stop structure between the screw and the connecting member when connecting and fixing the connecting member to the connected member using a screw,
The connecting member has a spherical surface formed of a part of a sphere and a recess having a screw hole for screw insertion having a diameter larger than the diameter of the screw at the bottom,
In the recess of the connecting member, a packing having a spherical surface having a diameter equal to the diameter of the spherical surface of the recess and having a through hole through which the screw is inserted is fitted,
The water stop structure, wherein the screw is inserted into the through hole and the screw hole of the packing and fastened to the connected member.   The packing is formed in a spherical surface corresponding to a spherical surface forming a recess formed in the connecting member on the outer peripheral surface, and has a diameter corresponding to the diameter of the screw hole formed in the recess and the diameter of the screw in the central portion. A packing body in which a hole is formed and a counterbore part having a flat surface perpendicular to the through hole is formed at an end of the through hole; and a contact body that is fitted into the counterbore part of the packing body and contacts the flat surface The water stop structure according to claim 1, wherein the water stop structure is configured to have.

Images