Adhesive-filled connectors

Abstract

To provide a connecting fitting capable of firmly fixing an object to be connected without drilling a hole for an anchor bolt. [Solution] An adhesive-filled connecting fitting (1) formed by bending a single plate vertically has a first fixing surface (10) and a second fixing surface (15). The outer surfaces of first fixing surface (10) and second fixing surface (15) are flat adhesive surfaces (10a, 15a) that are adhesively fixed to the surface of a connected object (8), and first fixing surface (10) and second fixing surface (15) are formed with adhesive-filled recesses (11, 12, 16, 17) that are deformed so as to protrude inward. Furthermore, adhesive-filled recesses (11, 12, 16, 17) are formed with a depth of 4 mm or more. Furthermore, adhesive-filled recesses (11, 12, 16, 17) are formed so that when flat adhesive surfaces (10a, 15a) of first fixing surface (10) and second fixing surface (15) are adhesively fixed to the connected object (8) during connection, their interiors become closed spaces.

Description

[Technical Field]

[0001] The present invention relates to a metal connector for connecting and fixing stone materials and the like. [Background technology]

[0002] Generally, graves are made by stacking stone gravestones. However, simply stacking them does not provide seismic resistance and there is a risk of them collapsing in an earthquake, so various measures have been taken to reinforce their earthquake resistance.

[0003] For example, Patent Document 1 discloses earthquake-resistant reinforcement by connecting adjacent gravestones or gravestones to their foundations, and discloses L-shaped connecting fittings that connect and secure gravestones and other structures to each other. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-083044 Summary of the Invention [Problem to be solved by the invention]

[0005] However, because conventional connecting fittings use anchor bolts to secure the connecting fittings to the gravestone, it is necessary to drill holes in the gravestone for the anchor bolts, and the holes for the anchor bolts must be deep enough to accommodate the length of the anchor bolts.

[0006] On the other hand, in recent years, there has been an increase in demand for small graves, and there is a trend toward smaller gravestones as well. As a result, for thin gravestones, drilling holes for anchor bolts can cause the stone to crack, making it impossible to use conventional connecting hardware.

[0007] The present invention was made in consideration of such problems, and aims to provide a connecting fitting that can be firmly fixed to the connected object without drilling a hole for an anchor bolt. [Means for solving the problem]

[0008] In order to solve the above problems, the adhesive-filled connecting fitting according to the present invention is formed by bending a single plate vertically, and includes a first fixing surface and a second fixing surface, the outer surfaces of the first fixing surface and the second fixing surface being adhesively fixed to the surface of a connected object via an adhesive, and the first fixing surface and the second fixing surface are formed with adhesive-filled recesses that are deformed so as to protrude inward. At the same time, a plurality of adhesive filling recesses having different heights are formed on the first fixing surface and the second fixing surface. It is characterized by the fact that [Effects of the Invention]

[0009] The adhesive-filled connector of the present invention allows objects to be firmly connected and fixed together using adhesive without drilling holes in the objects. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an adhesive-filled connector according to an embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing the configuration of an adhesive-filled connector according to an embodiment of the present invention. [Figure 3] FIG. 3 is a diagram showing how an adhesive-filled connector fitting according to an embodiment of the present invention is used. [Figure 4] FIG. 4 is a cross-sectional view showing how an adhesive-filled connector according to an embodiment of the present invention is used. [Figure 5] FIG. 5 is a perspective view of an adhesive-filled connector according to a first modified embodiment of the present invention. [Figure 6] FIG. 6 is a diagram showing the configuration of an adhesive-filled connecting fitting according to a first modified embodiment of the present invention. [Figure 7]FIG. 7 is a perspective view of an adhesive-filled connector according to a second modification of the embodiment of the present invention. [Figure 8] FIG. 8 is a diagram showing the configuration of an adhesive-filled connecting fitting according to a second modification of the embodiment of the present invention. [Figure 9] FIG. 9 is a perspective view of an adhesive-filled connector according to a third modification of the embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing the configuration of an adhesive-filled connecting fitting according to a third modification of the embodiment of the present invention. [Figure 11] FIG. 11 is a perspective view of an adhesive-filled connector according to a fourth modification of the embodiment of the present invention. [Figure 12] FIG. 12 is a diagram showing the configuration of an adhesive-filled connecting fitting according to a fourth modification of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] An adhesive-filled connecting fitting 1 according to an embodiment of the present invention will now be described with reference to the drawings. When connecting stone materials 8 such as gravestones as connected objects, the adhesive-filled connecting fitting 1 fills adhesive-filled recesses 11, 12, 16, and 17 with adhesive 7, thereby enabling the stone materials 8 to be stably and firmly connected and fixed without drilling holes in the stone materials 8. Figure 2 shows the configuration of the adhesive-filled connecting fitting 1, with Figure 2(a) being a front view, Figure 2(b) being a side view, and Figure 2(c) being a cross-sectional view.

[0012] The adhesive-filled connecting fitting 1 is an L-shaped fitting formed by bending flat steel, which is a flat, rectangular strip of metal plate (stainless steel), and has a first fixing surface 10 and a second fixing surface 15 that are perpendicular to each other via a fold 1a. The flat surfaces on the outside (opposite the bending direction) of the first fixing surface 10 and the second fixing surface 15 become adhesive surfaces 10a, 15a that are bonded to the surface of the stone 8 with adhesive 7.

[0013] Adhesive filling recesses 11, 12 are formed on the inside (the bending direction side) opposite the adhesive plane 10a on the first fixing surface 10. When viewed from the outside of the first fixing surface 10 (the adhesive plane 10a side), the adhesive filling recesses 11, 12 are recesses, but when viewed from the inside of the first fixing surface 10 on the opposite side, the adhesive filling recesses 11, 12 are protrusions.

[0014] The adhesive-filled recesses 11, 12 are elongated grooves that extend parallel to the fold 1a of the adhesive-filled connecting fitting 1, and have an elongated, approximately rectangular prism shape overall. The groove closer to the fold 1a is the first adhesive-filled recess 11, and the groove further from the fold 1a is the second adhesive-filled recess 12. In this embodiment, the groove of the second adhesive-filled recess 12 is deeper than the groove of the first adhesive-filled recess 11.

[0015] The first adhesive filling recess 11 has a length that is about 70% of the width of the first fixing surface 10 (length in the direction of the fold 1a), and the second adhesive filling recess 12 is slightly longer than the first adhesive filling recess 11 and has a length that is about 80% of the width of the first fixing surface 10. When connecting and fixing the stones 8, the internal spaces of the adhesive filling recesses 11, 12 are filled with adhesive 7. Three small ventilation holes 1b are formed in the bottom surfaces of the adhesive filling recesses 11, 12, respectively.

[0016] The second fixing surface 15 has the same shape as the first fixing surface 10, and its outer surface is an adhesive plane 15a, and a first adhesive filling recess 16 and a second adhesive filling recess 17 are formed on the second fixing surface 15.

[0017] Having explained the configuration of the adhesive-filled connecting fitting 1 above, we will now explain how to use the adhesive-filled connecting fitting 1 with reference to Figures 3 and 4. Here, we will explain the case where stones 8 that make up the wall of a small tomb are connected and fixed together.

[0018] The adhesive-filled connecting fitting 1 is a fitting that connects and fixes two perpendicular surfaces, and by connecting and fixing the adhesive plane 10a of the first fixing surface 10 to the surface of one of the stones 8 that it connects with adhesive 7, and by connecting and fixing the adhesive plane 15a of the second fixing surface 15 to the surface of the other stone 8 that it connects with adhesive 7, it is possible to firmly connect and fix the two surfaces.

[0019] Before joining, the user fills the adhesive 7 into the adhesive filling recesses 11, 12, 16, and 17 from the adhesive surface 10a (15a) side, and also applies the adhesive 7 to the entire surface of the adhesive surface 10a (15a). In this embodiment, a silicone adhesive is used as the adhesive 7, but other adhesives such as a two-component epoxy resin adhesive can also be used as appropriate.

[0020] When the adhesive planes 10a, 15a of the two fixing surfaces 10, 15 filled and coated with adhesive 7 are brought into close contact with the surface of the stone 8, the adhesive 7 gradually hardens, and the adhesive planes 10a, 15a are adhered and fixed to the surface of the stone 8. Since silicone adhesive hardens by reacting with moisture in the air, in this embodiment, in preparation for using a silicone adhesive, ventilation holes 1b are formed in the bottoms of the adhesive filling recesses 11, 12, 16, 17 to promote hardening.

[0021] At this time, the hardened adhesive layer 7a applied to the surface of the adhesive planes 10a, 15a and interposed between the adhesive planes 10a, 15a and the surface of the stone 8 has a thickness of approximately 0.1 to 0.5 mm, which is less than 1 mm, but the first adhesive mass 7b filled and hardened in the first adhesive filling recesses 11, 16 and the second adhesive mass 7c filled and hardened in the second adhesive filling recesses 12, 17 have a thickness of 1 cm or more.

[0022] Generally, there is a correlation between the thickness and strength of an adhesive; the thicker the adhesive, the stronger the adhesive force. This is because the entire resin of the hardened adhesive absorbs part of the force that tries to peel the non-adhered objects together by deforming, weakening the force and preventing peeling.

[0023] Therefore, with the adhesive-filled connecting fittings 1 having adhesive-filled recesses 11, 12, 16, and 17 filled with adhesive 7, even if a strong force is applied that attempts to peel the adhesive surfaces 10a and 15a and the stone 8 apart, the thick, hardened adhesive masses 7b and 7c in the adhesive-filled recesses 11, 12, 16, and 17 elastically deform to absorb the force, thereby preventing peeling.

[0024] On the other hand, since the thin adhesive layer 7a hardly deforms elastically, when a relatively small force vibration or the like occurs between the fixing surfaces 10, 15 and the stone 8, the adhesive layer 7a can minimize the relative displacement between the two, thereby maintaining a stable connection and fixation state.

[0025] In addition, in this embodiment, the shallow first adhesive filling recesses 11, 16 and the deep second adhesive filling recesses 12, 17 form adhesive filling recesses 11, 12, 16, 17 of different depths, thereby forming first adhesive lump portions 7b and second adhesive lump portions 7c of different heights.

[0026] In this way, in this embodiment, the adhesive 7 that bonds the fixing surfaces 10a, 15a and the stone 8 is made up of three adhesive layers 7a and adhesive lumps 7b, 7c of different thicknesses: a thin adhesive layer 7a located between the adhesive planes 10a, 15a and the stone 8, a first adhesive lump 7b located in the first adhesive filling recesses 11, 16, and a second adhesive lump 7c located in the second adhesive filling recesses 12, 17.This allows for a strong connection and fixation that will not come off even in earthquakes of various strengths.

[0027] As described above, according to the adhesive-filled connecting fittings 1 of this embodiment, adhesive-filled recesses 11, 12, 16, 17 for filling with adhesive 7 are formed on the adhesive surfaces 10a, 15a of the fixing surfaces 10, 15, so that the fixing surfaces 10, 15 can be firmly bonded and fixed to stone material 8, etc. using adhesive 7 even without anchors.

[0028] Furthermore, according to this embodiment, since there is no need to drill holes for anchors in the stone material 8, it is possible to reliably prevent the gravestone from cracking when holes are drilled in small, thin gravestones used in small graves.

[0029] Furthermore, even if a large force acting on the connected stones 8, moving them closer or farther apart due to earthquake shaking, the thick adhesive masses 7b and 7c filled in the adhesive-filled recesses 11, 12, 16, and 17 deform and absorb the shaking, thereby maintaining stable adhesive fixation by the adhesive-filled connecting fittings 1, and significantly improving the earthquake resistance of graves connected and fixed by the adhesive-filled connecting fittings 1.

[0030] Next, a first modified example of the adhesive-filled linking fitting 1 according to this embodiment will be described with reference to Figures 5 and 6. Figure 6 shows the configuration of the adhesive-filled linking fitting 2 according to the first modified example, with Figure 6(a) being a front view, Figure 6(b) being a side view, and Figure 6(c) being a cross-sectional view. The adhesive-filled linking fitting 2 differs from the adhesive-filled linking fitting 1 according to the above embodiment in the shapes of the adhesive-filled recesses 21, 22, 26, and 27, and therefore the different configuration will be mainly described.

[0031] In the above embodiment, the adhesive filling recesses 11, 12, 16, and 17 were closed spaces except for the openings on the adhesive surfaces 10a and 15a, except for the ventilation hole 1b, whereas the adhesive filling recesses 21, 22, 26, and 27 in this modified example 1 extend to both ends in the width direction parallel to the fold 2a.

[0032] In other words, at both widthwise ends of the fixing surfaces 20, 25, the adhesive filling recesses 21, 22, 26, 27 are open to the outside, and even when the adhesive surfaces 20a, 25a are adhered to the stone 8, the space within the adhesive filling recesses 21, 22, 26, 27 is connected to the outside space.

[0033] In addition, in the above embodiment, the shape of the vertical cross section perpendicular to the width direction of the adhesive filling recesses 11, 12, 16, and 17 was rectangular, whereas the same shape of the adhesive filling recesses 21, 22, 26, and 27 is a half-track shape (half-rounded rectangle) with a semicircular upper portion.

[0034] According to this variant example 1, the same effects as those of the above embodiment are achieved, and since both widthwise ends of the adhesive filling recesses 21, 22, 26, 27 are open to the outside, when the hardened adhesive mass portions 7b, 7c inside the adhesive filling recesses 21, 22, 26, 27 are deformed by an external force, they can protrude outward from these open portions, allowing them to deform more flexibly and absorb external forces such as impacts.

[0035] Furthermore, when a silicone adhesive that hardens by reacting with moisture in the air is used as the adhesive 7 filled in the adhesive filling recesses 21, 22, 26, and 27, both widthwise ends of the filled adhesive 7 come into contact with the outside air, thereby shortening the hardening time of the adhesive 7.

[0036] Next, a second modified example of the adhesive-filled linking fitting 1 according to this embodiment will be described with reference to Figures 7 and 8. Figure 8 shows the configuration of an adhesive-filled linking fitting 3 according to the second modified example, with Figure 8(a) being a front view, Figure 8(b) being a side view, and Figure 8(c) being a cross-sectional view. The adhesive-filled linking fitting 3 according to the second modified example differs from the adhesive-filled linking fitting 1 according to the above embodiment in the shapes of the adhesive-filled recesses 31, 32, 36, and 37, and therefore the different configuration will be mainly described.

[0037] In the above embodiment, the two adhesive filling recesses 11, 12, 16, and 17 on each fixing surface 10 and 15 were separated into independent spaces, but in this modified example 2, part of the space between the two adhesive filling recesses 31, 32, 36, and 37 on each fixing surface 30 and 35 is connected.

[0038] Specifically, the part of the first adhesive filling recess 31, 36 farthest from the fold 3a and the part of the second adhesive filling recess 32, 37 closest to the fold 3a overlap, and the two internal spaces are connected as a single space.

[0039] In addition, in this modification 2, the shape of a vertical cross section perpendicular to the width direction of adhesive filling recesses 31, 32, 36, 37 is a shape of two right-angled triangles that become higher with increasing distance from fold line 3a. First adhesive filling recesses 31, 36 and second adhesive filling recesses 32, 37 have the same shape and depth. Modification 2 provides the same effects as the above embodiment.

[0040] Furthermore, in this modified example 2, the adhesive filling recesses 31, 32, 36, 37 occupy approximately half of the area of ​​the adhesive surfaces 30a, 35a, and compared to the above embodiment, the proportion of the area of ​​the adhesive surfaces 30a, 35a that is bonded and fixed by the adhesive mass portions is larger, making it possible to prevent the stone 8 from peeling off in the event of a larger external force.

[0041] Next, a third modification of the adhesive-filled linking fitting 1 according to this embodiment will be described with reference to Figures 9 and 10. Figure 10 shows the configuration of an adhesive-filled linking fitting 4 according to the third modification, with Figure 10(a) being a front view, Figure 10(b) being a side view, and Figure 10(c) being a cross-sectional view. The adhesive-filled linking fitting 4 according to the third modification differs from the adhesive-filled linking fitting 1 according to the above embodiment in the shapes of the adhesive-filled recesses 41, 42, 46, and 47, and therefore the different configuration will be mainly described.

[0042] In this third modification, two first adhesive filling recesses 41, 46 and three adhesive filling recesses 42, 47 are formed on each fixing surface 40, 45. The first and second adhesive filling recesses 41, 42, 46, 47 are substantially hemispherical recesses, and the second adhesive filling recesses 42, 47 are deeper than the first adhesive filling recesses 41, 46.

[0043] The adhesive filling recesses 41, 42, 46, and 47 are closed spaces except for the openings at the adhesive surfaces 40a and 45a, respectively. According to the third modification, the same effects as those of the above embodiment can be achieved.

[0044] Next, a fourth modification of the adhesive-filled connecting fitting 1 according to the present embodiment will be described with reference to Figures 11 and 12. Figure 12 shows the configuration of an adhesive-filled connecting fitting 5 according to the fourth modification, with Figure 12(a) being a front view, Figure 12(b) being a side view, and Figure 12(c) being a cross-sectional view.

[0045] The adhesive-filled connecting fitting 5 of variant example 4 differs from the adhesive-filled connecting fitting 1 of the above embodiment in the shape of the fold 5a and the shapes of the adhesive-filled recesses 51, 52, 56, and 57, so the following description will focus on the different configurations.

[0046] In this modification 4, a large spherical rib 5c is formed at the fold 5a. By forming the fold 5a in this manner as a spherical shape, the strength of the fold 5a can be significantly improved.

[0047] The first and second adhesive filling recesses 51, 52, 56, 57 are rectangular parallelepiped recesses that extend widely in the width direction, and the second adhesive filling recesses 52, 57 are deeper than the first adhesive filling recesses 51, 56. The internal spaces of the rib 5c, the first adhesive filling recesses 51, 56, and the second adhesive filling recesses 52, 57 are all connected.

[0048] When using the adhesive-filled connecting fitting 5, the internal spaces of the rib 5c, the first adhesive-filled recesses 51, 56, and the second adhesive-filled recesses 52, 57 are filled with adhesive 7, and the adhesive 7 is also applied to the surfaces of the adhesive planes 50a, 55a before the fitting is adhesively fixed to the stone 8. This fourth modification provides the same advantageous effects as the above-described embodiment.

[0049] In addition, in this variant example 4, as in variant example 2 above, the adhesive-filled recesses 51, 52, 56, and 57 occupy a large proportion of the area of ​​the adhesive surfaces 50a and 55a (80 to 90%), which makes it possible to prevent the stone 8 from peeling off due to greater external forces.

[0050] While the present invention has been described above with reference to the preferred embodiments, including modifications, the present invention is not limited to these embodiments and various modifications are possible within the scope of the present invention. For example, the material, shape, and size of the adhesive-filled connector may be changed as appropriate.

[0051] In addition, the proportion of the area of ​​the adhesive-filled recesses on the adhesive surface can be changed as appropriate, but in order to be able to withstand larger earthquakes, it is desirable for the adhesive-filled recesses to occupy more than half of the total area of ​​the adhesive surface, and in order to be able to withstand even larger earthquakes, it is desirable for the adhesive-filled recesses to occupy more than 80% of the area.

[0052] The depth of the adhesive filling recess can also be changed as appropriate, but in order for the adhesive mass portion formed within the adhesive filling recess to absorb large forces through elastic deformation and effectively prevent adhesive peeling, it is desirable for the adhesive filling recess to be formed with a depth of 4 mm or more. [Explanation of symbols]

[0053] 1 Adhesive-filled connector 1a crease 1b Ventilation hole 10 First fixed surface 10a Adhesive plane 11 First adhesive filling recess 12 Second adhesive filling recess 15 Second fixed surface 15a Adhesive plane 16 First adhesive filling recess 17 Second adhesive filling recess 7. Adhesive 7a Adhesive layer 7b First adhesive mass 7c Second adhesive mass 8 Stone 2 Adhesive-filled connectors 2a crease 20 First fixed surface 20a Adhesive plane 21 First adhesive filling recess 22 Second adhesive filling recess 25 Second fixed surface 25a Adhesive plane 26 First adhesive filling recess 27 Second adhesive filling recess 3 Adhesive-filled connectors 3a crease 30 First fixed surface 30a Adhesive plane 31 First adhesive filling recess 32 Second adhesive filling recess 35 Second fixed surface 35a Adhesive plane 36 First adhesive filling recess 37 Second adhesive filling recess 4 Adhesive-filled connectors 4a crease 40 First fixed surface 40a adhesive plane 41 First adhesive filling recess 42 Second adhesive filling recess 45 Second fixed surface 45a Adhesive plane 46 First adhesive filling recess 47 Second adhesive filling recess 5 Adhesive-filled connectors 5a crease 5c Large Rib 50 First fixed surface 50a adhesive plane 51 First adhesive filling recess 52 Second adhesive filling recess 55 Second fixed surface 55a Adhesive plane 56 First adhesive filling recess 57 Second adhesive filling recess

Claims

1. In adhesive-filled connectors formed by bending a single plate vertically, a first fixing surface and a second fixing surface; outer surfaces of the first fixing surface and the second fixing surface are adhesive planes that are adhesively fixed to the surface of the object to be connected via an adhesive, An adhesive-filled connecting fitting characterized in that the first fixed surface and the second fixed surface have adhesive-filled recesses that are deformed so as to protrude inward, and the first fixed surface and the second fixed surface have multiple adhesive-filled recesses of different heights formed thereon.

2. 2. The adhesive-filled connector according to claim 1, wherein the plurality of adhesive-filled recesses having different heights are formed so that the interiors of the recesses are independent spaces that are not connected to each other.

3. The adhesive-filled connecting fitting according to claim 1, characterized in that the adhesive-filled recess is formed so that when the adhesive planes of the first fixing surface and the second fixing surface are adhesively fixed to the connected object during connection, its interior becomes a closed space.

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