JP6145365B2 - Dry waterproof sealant - Google Patents

Description

  The present invention relates to a dry waterproof seal material, and more particularly to a dry waterproof seal material that can be attached to a surface member having irregularities such as an outer wall.

  Many of the outer walls of buildings have irregularities. Therefore, as shown in Japanese Patent Application Laid-Open No. 2000-8578 (Patent Document 1), a wet waterproof sealing material may be applied to the joint between the structure (fixed object) protruding from the outer wall and the outer wall. It is common.

  On the other hand, foams are widely used as waterproof sealing materials in various fields such as architecture, civil engineering, electricity, electronics, and vehicles. For example, Japanese Unexamined Patent Application Publication No. 2009-52216 (Patent Document 2) discloses that a foam (sponge-like water-stopping material) is used as a dry waterproof seal material in a water-stopping structure of upper and lower exterior material pipes in a house. Yes.

  Japanese Unexamined Patent Application Publication No. 2009-203265 (Patent Document 3) discloses a foam structure that can follow even a minute gap.

  Japanese Utility Model Laid-Open No. 63-8306 (Patent Document 4) is provided with a notch at the top so that the fluid adhesive substance housed therein is pushed out to the adherend surface side. An elastic sealant is disclosed.

JP 2000-8578 A JP 2009-52216 A JP 2009-203265 A Japanese Utility Model Publication No. 63-8306

  In the case of a construction method in which a wet sealant is applied between the outer wall and the fixed object, there are inconveniences that the construction takes time and the construction cannot be performed in rainy weather. Further, when the foam as described above is attached to a surface member having irregularities such as an outer wall, a gap is generated between the foam and the recess. Therefore, the conventional foam cannot be used as a waterproof sealing material between the uneven surface member and the fixed object.

  Further, in Patent Document 4, a cut is provided in the elastic sealing material, but the cut is only provided along the longitudinal direction because it aims to exude the adhesive substance from the cut. It is.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a dry waterproof sealing material capable of improving waterproofness.

  A dry waterproof seal material according to an aspect of the present invention is a dry waterproof seal material attached to a face member, which is made of a compressible elastic body, and has a first slit and a second slit intersecting each other on the surface thereof. It is characterized by that.

  Preferably, the first slit extends linearly. The second slit is also preferably linear.

  Preferably, the surface has a shape that is long in one direction and short in the other direction orthogonal to the one direction, and the first slit extends along the longitudinal direction.

  Preferably, the second slit intersects the first slit.

  Preferably, a plurality of first slits are provided. It is desirable that a plurality of second slits be provided.

  Preferably, the plurality of first slits and the plurality of second slits form a lattice-like slit group as a whole.

  Preferably, the elastic body is further provided with a land portion having a surface without the first and second slits and continuously extending in the longitudinal direction.

  The land portion is desirably provided at an edge in the short side direction.

  Preferably, a third slit is further provided on the surface of the elastic body at a position away from the first and second slits, and the first land portion and the second land are separated from the third slit as a boundary. The part is formed.

  The depth of the third slit may be deeper than the first and second slits.

  Preferably, the elastic body has a quadrangular cross-sectional shape.

  Preferably, the elastic body includes a first layer on the surface side, and a second layer adjacent to the first layer and formed of a material harder than the first layer. These slits are provided only in the first layer.

  Preferably, the elastic body is a closed cell rubber.

  ADVANTAGE OF THE INVENTION According to this invention, the waterproofness at the time of attaching a dry-type waterproof sealing material to the surface member which has an unevenness | corrugation can be improved.

It is a perspective view which shows the shape of the dry-type waterproof sealing material which concerns on embodiment of this invention. It is a schematic cross section which shows typically the attachment structure of the dry-type waterproof sealing material which concerns on this Embodiment at the time of cut | disconnecting along the YY line in FIG. It is a figure which shows typically the path | route of the rainwater at the time of rainy weather at the time of using the dry-type waterproof sealing material which concerns on embodiment of this invention vertically. It is sectional drawing which shows the structural example of the dry type waterproof sealing material which concerns on embodiment of this invention. It is a perspective view which shows the shape of the dry-type waterproof sealing material which concerns on Embodiment 2 of this invention. It is a figure which shows typically the path | route of the rainwater at the time of rain when the dry type waterproof sealing material which concerns on Embodiment 2 of this invention is used sideways. It is a surface view which shows the dry-type waterproof sealing material which concerns on the modification 1 of Embodiment 2 of this invention. It is a surface view which shows the dry-type waterproof sealing material which concerns on the modification 2 of Embodiment 2 of this invention. It is a surface view which shows the dry-type waterproof sealing material which concerns on the modification 3 of Embodiment 2 of this invention. It is a surface view which shows the dry-type waterproof sealing material which concerns on the modification 4 of Embodiment 2 of this invention. It is a perspective view which shows the shape of a general dry-type waterproof sealing material. It is a schematic front view which shows typically an example of the attachment structure of the dry type waterproof sealing material which concerns on this Embodiment, and a general dry type waterproof sealing material. FIG. 13 is a schematic cross-sectional view schematically showing a dry waterproof sealing material according to the present embodiment and a general dry waterproof sealing material mounting structure when cut along line XX in FIG. 12. It is a schematic cross section which shows typically the attachment structure of the general dry-type waterproof sealing material at the time of cut | disconnecting along the YY line in FIG. It is a figure which shows typically the path | route of rainwater at the time of rainy weather at the time of using a general dry-type waterproof sealing material.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  The dry waterproof seal material (hereinafter abbreviated as “seal material”) according to the present embodiment can be attached to a surface member having irregularities, and more specifically, a surface object and a fixed object protruding from the surface member. Installed between.

  In the present embodiment, the “surface member” is a member having a vertical surface or an inclined surface, and typically represents a member having a vertical surface such as an outer wall of a building. In addition, a surface member is not limited to the wall material of a building. Further, it is assumed that the surface of the surface member itself is not required to be waterproof. When the face member is an outer wall, the “fixed object” may include a lighting fixture, a balcony, a curtain, and the like. In the following description, the case where a sealing material is attached between the outer wall of a building and a lighting fixture will be described as an example.

  First, prior to description of the sealing material according to the present embodiment, a general shape and waterproofness of the sealing material will be briefly described.

(General sealing materials)
FIG. 11 is a perspective view showing the shape of a general sealing material 110. FIG. 12 is a schematic front view schematically showing an example of the attachment structure of the sealing material 110. FIG. 13 is a schematic cross-sectional view schematically showing the mounting structure of the sealing material 110 when cut along the line XX in FIG. FIG. 14 is a schematic cross-sectional view schematically showing the mounting structure of the sealing material 110 when cut along the YY line in FIG. FIG. 15 is a diagram schematically showing a path of rainwater in the case of rain when a general sealing material 110 is used.

  Referring to FIG. 11, the sealing material 110 has an elongated shape having a square cross section. Of the four surfaces along the longitudinal direction of the sealing material 110, the upper surface is represented as the front surface 111, and the surface opposite to the front surface 111 is represented as the back surface 112. Both the front surface 111 and the back surface 112 are smooth. The sealing material 110 is made of a compressible elastic body, and the material thereof is, for example, a closed cell foam rubber.

  With reference to FIG. 12 and FIG. 13, the sealing material 110 is disposed so as to be sandwiched between an outer wall 1 having an uneven surface and a housing of a lighting fixture 2 provided to protrude from the outer wall 1. Specifically, two seal members 110 are arranged, for example, in the vertical direction and in the horizontal direction so as to be along the inner periphery of the housing of the lighting fixture 2. In this example, the front surface 111 of the sealing material 110 is disposed on the outer wall 1 side, and the back surface 112 of the sealing material 110 is disposed on the housing side of the lighting fixture 2, but these may be reversed. It is assumed that an electrical device (not shown) having no water resistance such as a light bulb is disposed in the internal space 2a of the lighting fixture 2.

  Referring to FIG. 14, when sealing material 110 is attached to outer wall 1 having irregularities, gap 103 may be formed between recess 1 b of outer wall 1 and surface 111 of sealing material 110. This is because the flexibility of the sealing material 110 alone cannot follow the uneven shape on the surface of the outer wall 1. When the gap 103 is generated in this way, the waterproof property by the sealing material 110 cannot be secured.

  Further, the gap 103 may not be generated depending on the size of the unevenness, but even in such a case, the compression rate of the concave portion 1b of the sealing material 110 is lower than the compression rate of the convex portion 1a. Therefore, when a general sealing material 110 is attached to the outer wall 1, rainwater enters from the concave portion 1b having a low compression rate during rainy weather, and the rainwater flows along the plurality of concave portions 1b to the luminaire 2 side. That is, as shown by an arrow F10 in FIG. 15, rainwater that has entered from the periphery of the lighting fixture 2 enters the internal space 2a (FIG. 13) of the lighting fixture 2 while avoiding the convex portion 1a. Thus, with the general sealing material 110 as shown in FIG. 11, it is difficult to prevent water leakage to the internal space 2 a of the lighting fixture 2.

  On the other hand, the sealing material according to each embodiment of the present invention has a shape capable of preventing (at least reducing) leakage of water into the internal space 2a of the lighting fixture 2 even when the outer wall 1 is uneven. Below, the shape of the sealing material which concerns on each embodiment, and its waterproofness are demonstrated in detail. In addition, the sealing material in each embodiment shall be attached in the state pinched | interposed between the outer wall 1 and the housing | casing of the lighting fixture 2, as shown in FIG. 12 and FIG.

(Embodiment 1)
FIG. 1 is a perspective view showing the shape of a sealing material 10 according to Embodiment 1 of the present invention. FIG. 2 is a schematic cross-sectional view schematically showing the mounting structure of the sealing material 10 when cut along the line YY in FIG. FIG. 3 is a diagram schematically showing a path of rainwater when it rains when the sealing material 10 according to Embodiment 1 of the present invention is used in the vertical direction.

  Referring to FIG. 1, the sealing material 10 has an elongated shape with a square cross section, similar to the general sealing material 110 described above. An arrow A1 in FIG. 1 indicates the longitudinal direction, and an arrow A2 indicates the width direction (short side direction). The sealing material 10 is also made of a compressible elastic body, and the material thereof is, for example, closed cell foam rubber.

  As shown in FIG. 1, in the present embodiment, a lattice-shaped slit group 30 is provided on the surface 11 of the sealing material 10. The slit group 30 includes a plurality of first slits 31 extending along the longitudinal direction A1 of the surface 11 and a plurality of second slits 32 extending along the width direction A2 of the surface 11.

  Each first slit 31 extends to both end surfaces (side surfaces) 13 and 14 in the longitudinal direction A1. Each second slit 32 extends to both end faces (side faces) 15 and 16 in the width direction A2. The lattice-shaped slit group 30 is, for example, 3 mm to 5 mm square. The slits 31 and 32 do not reach the back surface 12 side, and the ratio of the slit depth L2 to the thickness L1 of the sealing material 10 may be determined in the range of 0.2 to 0.7, for example. Further, the depth L2 of each slit may be determined according to the degree of unevenness of the outer wall 1 to be followed.

  It is assumed that such a sealing material 10 is attached to the outer wall 1 having the unevenness as shown in FIG. 14, for example, in the vertical direction (that is, with the longitudinal direction being the vertical direction). In this case, the gap 103 as shown in FIG. 14 does not occur between the recess 1 b of the outer wall 1 and the surface 11 of the sealing material 10. In the present embodiment, when the sealing material 10 is attached, the surface 11 is pressed against the outer wall 1 side so that the slit group 30 of the sealing material 10 bends at the convex portion 1a of the outer wall 1, and is fixed in that state. is there. Therefore, as shown in FIG. 2, the shape of the sealing material 10 can follow the uneven shape of the outer wall 1. As a result, as shown by an arrow F <b> 1 in FIG. 3, rainwater can be prevented from entering on the outer end face side of the sealing material 10.

  Nevertheless, it is assumed that rainwater enters from the recess 1b of the outer wall 1 as shown by the arrow F2 in FIG. However, in the present embodiment, the invading water can be temporarily stored in the fine gap (slit) formed by the slit group 30 by the surface tension. Further, even when the amount of accumulated rainwater exceeds a certain amount, it can be discharged from the lower end through the slit group 30 while avoiding the convex portion 1a of the outer wall 1 by gravity as indicated by an arrow F3 in FIG. . Therefore, even if the dry sealing material 10 is used between the uneven outer wall 1 and the lighting fixture 2, water leakage to the internal space 2 a (FIG. 13) of the lighting fixture 2 can be effectively prevented.

  In addition, in FIG. 12, the sealing material 10 disposed laterally on the upper side of the lighting fixture 2 has at least a lower slit 32 so that rainwater entering from the upper side does not flow into the internal space 2a of the lighting fixture 2 as it is. It may be provided so as not to reach the end face 15 or 16 located in the position.

  In the present embodiment, the sealing material 10 is arranged straight in each direction (vertical direction and horizontal direction) with respect to the outer wall 1. However, since the sealing material 10 has flexibility, the following configuration is used. May be arranged. For example, a long sealing material may be prepared above the sealing material 10 arranged in the vertical direction in FIG. 12, and only the upper end portion of the sealing material may be twisted so that the slit group 30 faces upward. In that case, for example, only the part located on the upper side of the luminaire 2 is arranged so that the side surface 16 of the sealing material 10 faces the front, and in the other most part, the back surface 12 of the sealing material is arranged to face the front. The By arrange | positioning in this way, the rain water which flowed in from the upper side of the lighting fixture 2 can also flow down to the lower end of the sealing material 10 through the slit group 30 as it is.

  As shown in FIG. 4, an adhesive 22 and a release paper 23 may be provided on the back surface 12 side of the sealing material 10. Thus, by providing the adhesive 22 in advance, the sealing material 10 can be easily attached.

  As described above, in the present embodiment, the lattice-shaped slit group 30 is provided on the surface 11 of the sealing material 10. Therefore, when the sealing material 10 is attached to a surface member such as the outer wall 1 having unevenness, the shape of the sealing material 10 can follow the uneven shape of the surface member. Further, even for the water that has entered, water can be stored between the slits by surface tension. Furthermore, even if the accumulated water is saturated, it can be discharged, for example, downward due to its gravity. Therefore, the sealing material 10 can prevent water leakage to an electrical device or the like. That is, waterproofness can be ensured by the dry sealing material 10. As a result, it is possible to shorten the construction time for sealing and improve long-term stability compared to the case where a wet sealant is used. Moreover, since it is only necessary to put the lattice-shaped slit group 30 in the surface 111 of the general sealing material 110 (FIG. 11) marketed, manufacturing cost can also be suppressed.

  In the above embodiment, the lattice-shaped slit group 30 as shown in FIG. 1 is provided on the surface 11 of the sealing material 10, but other shapes and numbers of slits may be provided. Further, the size of the lattice may be changed. However, the slit formation pattern is preferably a pattern suitable for following the unevenness of the surface member. It is also desirable that the pattern be suitable for storing water by surface tension. Moreover, you may become the pattern which can control the drainage path of water.

  For example, the plurality of first slits 31 and the plurality of second slits 32 may intersect at an angle of less than 90 °. Moreover, the linear 1st slit 31 does not need to be mutually parallel. Similarly, the linear second slits 32 may not be parallel to each other.

  Moreover, the 1st slit 31 does not need to extend to the both-ends edge (end surface 13 and end surface 14) of longitudinal direction A1. However, it is desirable that the first slit 31 extends at least to the lower end in the arrangement state. The “end portion” includes not only the edge but also the vicinity of the edge (before the edge). That is, as long as the interior space 2a (FIG. 7) of the lighting fixture 2 can be waterproofed, the first slit 31 may not extend to the lower edge. Similarly, the 2nd slit 32 does not need to extend to the both-ends edge (end surface 15 and end surface 16) of the width direction A2, and should just extend to an outer edge part at least in the arrangement | positioning state. For example, the first slit 31 may not be formed to the lower end edge, and the second slit 32 may not be formed to the inner end edge (inside the internal space 2a). By doing in this way, the drainage path of water can be controlled so that the saturated water is discharged in the direction (outer end face side) that has entered rather than the lower end.

  Further, depending on the uneven shape of the surface member, at least one of the plurality of first slits 31 and the plurality of second slits 32 may be only one slit. For example, a slit group may be configured by one first slit 31 and a plurality of second slits 32.

  Moreover, each slit 31 and 32 may not be linear. Further, the first slit 31 and the second slit 32 may not completely intersect as long as they intersect each other.

(Embodiment 2)
FIG. 5 is a perspective view showing the shape of a sealing material 10A according to Embodiment 2 of the present invention. FIG. 6 is a diagram schematically showing a path of rainwater in the case of rain when the sealing material 10A according to Embodiment 2 of the present invention is used in the horizontal direction. In addition, the same code | symbol is attached | subjected to the part which is the same as that of the sealing material 10 demonstrated in the said Embodiment 1, or corresponds. Hereinafter, only portions different from the sealing material 10 of the first embodiment will be described in detail.

  As shown in FIG. 5, the lattice-like slit group 30 as shown in the first embodiment is also provided on the surface 11 of the sealing material 10A, but in this embodiment, the slit group 30 is It is provided only at the center position in the width direction, not the entire surface 11. For example, two land portions 41, 42, 43, and 44 are further provided on the both sides in the width direction across the slit group 30 in the sealing material 10A. Each land part 41, 42, 43, 44 has a surface without the first slit 31 and the second slit 32, and extends continuously in the longitudinal direction without interruption. In addition, the surface of each land part 41, 42, 43, 44 should just be a surface without the notch | incision which has depth, such as the 1st slit 31 and the 2nd slit 32, and does not need to be a completely smooth surface. .

  Two land portions 41 and 42 are provided adjacent to one end surface 15 side in the width direction, and two land portions 43 and 44 are provided adjacent to the other end surface 16 side in the width direction. . The land portions 41 and 43 are adjacent to the slit group 30, and the land portions 42 and 44 are provided on the edge of the sealing material 10. Adjacent land portions 41, 42 (43, 44) are formed with one isolated slit 33 as a boundary.

  The isolated slit 33 is provided at a position away from the first slit 31 and the second slit 32 without intersecting any of the first slit 31 and the second slit 32 constituting the slit group 30. In the present embodiment, the isolated slit 33 is provided substantially parallel to the first slit 31. However, the isolated slit 33 may not be parallel as long as it is parallel to the first slit 31. Moreover, the width of each land part 41,42,43,44 is substantially the same as the space | interval between the 1st slits 31 adjacent in the slit group 30, for example. Note that at least one of the land portions 41, 42, 43, 44 may be wider than the interval between the first slits 31.

  It is assumed that such a sealing material 10A is attached laterally (that is, with the longitudinal direction being transverse) between the upper end of the housing of the lighting fixture 2 and the outer wall 1 having irregularities. In the present embodiment, when the end surface 16 of the sealing material 10A is arranged so as to face the outside, that is, the upper side of the lighting device 2, and the end surface 15 faces the inner space 2a (FIG. 13), that is, the lower side of the lighting device 2. Assume. The sealing material 10 </ b> A of the present embodiment is more conformable to unevenness than a general sealing member 110, and the land portion 44 does not have the second slit 32 extending in the vertical direction at the arrangement position. Therefore, in the portion where the unevenness of the outer wall 1 is small, the intrusion of rainwater is prevented on the end face 16 side of the sealing material 10A as indicated by the arrow F11 in FIG.

  Next, as indicated by an arrow F12 in FIG. 6, it is assumed that rainwater has entered between the outer wall 1 and the sealing material 10A from the recess 1b (FIG. 14) of the outer wall 1. In this case, the water that has entered enters the gap of the isolated slit 33 between the land portions 43 and 44 and is temporarily stored. As shown by an arrow F13 in FIG. 6, a part of the accumulated water is guided as it is along the extending direction of the isolated slit 33, that is, in the lateral direction at the arrangement position.

  On the other hand, when the unevenness of the outer wall 1 is deep, or when the amount or momentum of rainwater is strong, it cannot be received by the gap of the isolated slit 33 and flows down toward the slit group 30 according to the gravity. In that case, rainwater is temporarily stored in the fine gap (slit) of the slit group 30 by the surface tension, similarly to the sealing material 10 of the first embodiment. When the accumulated rainwater exceeds a certain amount, it flows down through the slit group 30 by gravity as indicated by an arrow F14 in FIG.

  Here, in the present embodiment, the land portion 41 is provided directly below the slit group 30. Therefore, rainwater flowing down the slit group 30 is received by the first slit 31 located at the lower end of the slit group 30. The received water is guided laterally along the slit 31 as indicated by an arrow F15 in FIG. That is, the traveling direction of rainwater is changed by the presence of the land portion 41.

  However, depending on the unevenness of the outer wall 1, there is a possibility of passing through the land portion 41. However, in the present embodiment, another land portion 42 exists at the edge on the end face 15 side. Therefore, even if a small amount of water that could not be received in the first slit 31 at the lower end has passed through the first land portion 41, as shown by the arrow F16 in FIG. , 42 can reliably receive the remaining rainwater. The received rainwater is collected in the gap between the isolated slits 33 and guided to the side as it is.

  As described above, according to the present embodiment, the two sets of land portions 41, 42, 43, and 44 functioning as the water blocking layer are provided at both ends in the width direction of the sealing material 10A. Therefore, even when the sealing material is used sideways, water leakage to the inner space 2a side of the lighting fixture 2 can be prevented. Even when the sealing material 10A is used in the vertical orientation, the two sets of land portions 41, 42, 43, and 44 are located on both the outer side and the waterproof target side, respectively. Therefore, the sealing material 10A can exhibit high water stopping performance even when used in a vertical orientation.

  In the present embodiment, two land portions are provided at each end in the width direction, but it is sufficient that at least one land portion is provided at each end. Alternatively, three or more land portions may be provided at each end portion.

  As described above, when the sealing material 10A is used in the horizontal direction, the compressive force and finer followability of the sealing material 10A are required than when the sealing material 10A is used in the vertical direction. Therefore, as shown in FIG. 5, the sealing material 10 </ b> A is located on the front surface 11 side, is located closer to the back surface 12 side than the layer 51 provided with the slits 31, 32, 33, and the slits 31, 32, 33. It is desirable that the layer 52 containing no be hardened. That is, it is desirable that the sealing material 10A is composed of two layers. Here, the layer 51 on the front surface 11 side is referred to as “soft layer 51”, and the layer 52 on the back surface 12 side is referred to as “hard layer 52”. It is assumed that the hard layer 52 also has flexibility. The thickness (depth) L11 of the soft layer 51 is preferably equal to or greater than the thickness L12 of the hard layer 52.

  As described above, by providing the hard layer 52 on the sealing material 10, it is possible to improve the compressive force and the followability in the soft layer 51 rather than making the entire thickness of the sealing material 10 uniform.

  The material which forms the soft layer 51 should just contain at least 1 of EPDM (ethylene propylene diene rubber) and polyethylene, for example. The material which forms the hard layer 52 should just contain at least 1 of EPDM, a polyurethane, a polystyrene, and polyethylene, for example. The soft layer 51 and the hard layer 52 may be connected using, for example, an adhesive member, or may be connected by a known processing method without using an adhesive member. The soft layer 51 and the hard layer 52 are not limited to closed-cell foams, but may be semi-closed-cell foams.

  As described above, when the sealing material 10 </ b> A includes two layers, it is desirable that each of the slits 31, 32, 33 is provided so as not to reach the boundary position with the hard layer 52. That is, it is desirable that the lower ends of the slits 31, 32, and 33 are positioned before the boundary position so that the portion surrounded by the slits is not peeled off. In the present embodiment, the ratio of the depth L22 of the slits 31, 32, 33 to the thickness L21 of the entire sealing material 10A depends on the ratio of the soft layer 51, but is approximately 0.4 to 0.7. It is desirable to be determined by the range.

  In addition, the depth of all the slits 31, 32, and 33 may not be the same. For example, at least one of the first slit 31 located at the lower end of the slit group 30 at the arrangement position and the isolated slit 33 (the isolated slit 33 between the land portions 41 and 42 in FIG. 6) is another slit. It may be deeper. By doing so, water that has entered the slit group 30 can be received more reliably.

  Moreover, as long as the layer adjacent to the soft layer 51 having the surface 11 is formed of a material harder than the soft layer 51, the layer may be composed of three or more layers. Similarly, the sealing material 10 shown in the first embodiment may be composed of two layers, for example.

  Note that the positions of the land portions and the positions of the slits are not limited to the example shown in FIG. Below, the modification of a sealing material is demonstrated.

(Modification 1)
FIG. 7 is a surface view showing a sealing material 10B according to Modification 1 of Embodiment 2 of the present invention. Referring to FIG. 7, in the present modification, the second slits 32 are provided at fine intervals at the center in the width direction, whereas the first slits 31 are located at positions adjacent to the land portions 41 and 43. Only provided. Both ends of the plurality of second slits 32 intersect with the first slits 31 without intersecting each other. That is, in the present modification, a continuous slit group 30A is formed by the multiple second slits 32 and the pair of first slits 31 disposed at both ends thereof.

  In this modification, it is desirable that the length of the second slit 32 on the surface 11 of the sealing material 10 </ b> B is twice or more the dimension between the adjacent second slits 32.

(Modification 2)
FIG. 8 is a surface view showing a sealing material 10C according to Modification 2 of Embodiment 2 of the present invention. Referring to FIG. 8, in the present modification, for example, two land portions 41 and 42 are provided not at the end in the width direction but at the center position. A lattice-shaped slit group 30 is provided on both sides of the land portions 41 and 42. The width of each slit group 30 (the length of the second slit 32) may be shorter than the width of the slit group 30 shown in the second embodiment.

(Modification 3)
FIG. 9 is a surface view showing a sealing material 10D according to Modification 3 of Embodiment 2 of the present invention. Referring to FIG. 9, also in this modification, for example, two land portions 41 and 42 are provided at the center in the width direction. In this sealing material 10 </ b> D, a lattice-shaped slit group 30 is provided on one end face 15 side so as to be adjacent to the land portion 42. On the other end face 16 side, a continuous slit group 30 </ b> A is provided adjacent to the land portion 41.

  In this case, it is desirable that the lattice-shaped slit group 30 is arranged on the waterproof target side in any direction in which the sealing material 10D is used.

(Modification 4)
FIG. 10 is a surface view showing a sealing material 10E according to Modification 4 of Embodiment 2 of the present invention. Referring to FIG. 10, in this modification, land portions 41 and 42 are provided only on one end surface 15 side in the width direction. In other portions of the surface 11, for example, a lattice-shaped slit group 30 is provided.

  In this case, it is desirable that the land portions 41 and 42 be arranged on the waterproof target side in any direction in which the sealing material 10E is used.

  Note that Embodiment 2 and each modification may be combined as appropriate. For example, when the width of the sealing material is relatively wide, the land portions are provided at both ends of the sealing material and at substantially the center position, and the lattice-shaped slit group 30 and the continuous slits are provided therebetween. Any of group 30A may be formed.

  Further, in each embodiment, the sealing material has been described as having a quadrangular cross section, but the cross section is not limited to a quadrangular shape as long as the shape has a surface. For example, the cross section of the sealing material may be triangular or elliptical.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Outer wall, 1a Convex part, 1b Concave part, 2 Lighting fixture, 2a Internal space 10, 10A, 10B, 10C, 10D, 10E, 110 Sealing material, 11, 111 Surface, 12, 112 Back surface, 13, 14, 15, 16 End face, 22 Adhesive, 23 Release paper, 30 Slit group (lattice), 30A Slit group (continuous), 31 1st slit, 32 2nd slit, 33 Isolated slit, 41, 42, 43, 44 Land Part, 103 gap.

Claims (15)

It is a dry waterproof seal material made of a compressible elastic body and attached to a face member,
A dry waterproof sealing material, wherein a first slit and a second slit intersecting each other are provided on the surface of the sealing material.   The dry waterproof sealing material according to claim 1, wherein the first slit extends linearly.   The dry waterproof sealing material according to claim 1, wherein the second slit extends linearly. The surface is long in one direction and short in the other direction orthogonal to the one direction,
The dry waterproof sealing material according to claim 1, wherein the first slit extends along the longitudinal direction.   The dry waterproof sealing material according to claim 4, wherein the second slit intersects the first slit.   The dry waterproof sealing material according to claim 5, wherein a plurality of the second slits are provided.   The dry waterproof sealing material according to claim 6, wherein a plurality of the first slits are provided.   The dry waterproof sealing material according to claim 7, wherein a lattice-shaped slit group is formed by the first slit and the second slit.   The dry waterproof sealing material according to claim 4, wherein the elastic body is further provided with a land portion that has a surface without the first and second slits and extends continuously in the longitudinal direction.   The dry waterproof sealing material according to claim 9, wherein the land portion is provided at an edge in a short side direction. The surface of the elastic body is further provided with a third slit at a position away from the first and second slits,
The dry waterproof sealing material according to claim 9 or 10, wherein a first land portion and a second land portion are formed with the third slit as a boundary.   The dry waterproof sealing material according to claim 11, wherein a depth of the third slit is deeper than that of the first and second slits.   The dry waterproof sealing material according to claim 1, wherein the elastic body has a quadrangular cross-sectional shape. The elastic body includes a first layer on the surface side, and a second layer that is adjacent to the first layer and formed of a material harder than the first layer,
The dry waterproof sealing material according to claim 13, wherein the first and second slits are provided only in the first layer.   The dry waterproof sealing material according to claim 1, wherein the elastic body is a closed-cell rubber.

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