Connectors

Abstract

To provide a connector used to install a member of a wooden building or the like and capable of reassuring a large opening for piping while maintaining strength of the member.SOLUTION: A connector 11 is arranged at a border of one material 81 and the other material 91 and its one end side is mounted to the one material 81 and the other end side is mounted to the other material 91 to connect the one material 81 and the other material 91. In the connector 11 at a section from a mount part to the one material 81 to the mount part to the other material 91, a large hole 39 penetrating both lateral surfaces to be used as an opening for piping is formed to connect spaces divided by the one material 81. As the load acting on the one material 81 is transmitted to the connector 11 at the mount part to the connector 11, no large load acts on an overlapping position with the large hole 39 in the one material 81, and even when a window hole 89 is formed there, the strength of the one material 81 can be maintained.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a connector used for fastening various members that constitute a wooden building or the like. [Background technology]

[0002] Under the floors and in the ceilings of buildings, various wiring and pipes (hereinafter collectively referred to as piping), such as power lines, gas pipes, water and sewer pipes, and communication lines, are usually laid. Although such piping is often laid to avoid major components such as beams, there are also cases where holes are drilled in the sides of beams and other components and the piping is passed through them for various reasons. If this hole becomes large, the area of ​​the component that is missing also becomes large, which may cause strength problems. Therefore, in steel-frame buildings, when large holes for piping are drilled in steel materials such as beams, steel plates are sometimes welded to surround the outer edge to ensure the necessary strength.

[0003] Examples of technologies related to the present invention include the following patent documents. Patent document 1 discloses a cross member joint structure at the joint between the support beam and the hanging beam, which does not impair the bending strength of the hanging beam and allows pipes to be continuously laid above the ceiling. In this joint structure, the side of the support beam and the end face of the hanging beam are in T-shaped contact, and the lower part of the end face of the hanging beam is cut out in a concave shape, allowing pipes to be laid there. The lower part of the end face of the hanging beam does not have a significant effect on the strength of the hanging beam, so even if such a cutout is formed, the bending strength of the hanging beam is not impaired.

[0004] The following Patent Document 2 discloses a building that can reduce the number of places where pipes and wiring penetrate wooden beams. This building uses a rectangular joint made of steel frame material, and the end faces of wooden columns and wooden beams are brought into contact with this joint, and the wooden columns and wooden beams are pulled to the joint using fully threaded bolts or the like. Because the joint is hollow, pipes can be housed therein, and the number of places where pipes penetrate wooden beams can be reduced. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-194481 A [Patent Document 2] JP 2020-97845 A Summary of the Invention [Problem to be solved by the invention]

[0006] In traditional wooden buildings, beams and other structural members that make up the framework are often relatively small in cross section, and it is easy to secure space for piping around them, so holes for piping are rarely drilled in the members. However, in recent years, due to improvements in the manufacturing technology of laminated lumber, wooden buildings that use large cross section members in the same way as steel members have become practical, and in such buildings, the space for piping becomes narrow, so large holes for piping are sometimes drilled in the members. In such cases, reinforcement by welding, as in steel frame structures, is not possible, and when reinforcing, time-consuming work such as attaching pieces of wood to straddle both sides of the hole is unavoidable.

[0007] The present invention was developed based on these circumstances, and aims to provide a connector that can be used to install components that make up a wooden building, etc., and that can ensure a large opening for piping while maintaining the strength of the components. [Means for solving the problem]

[0008] To solve the above problems No. 1 The invention relates to a connector that is placed at the boundary between one material and the other material, and is capable of connecting one material to the other material by attaching one end to the one material and the other end to the other material, and is characterized in that a large hole penetrating both side surfaces is formed in the section from the attachment point to the one material to the attachment point to the other material to connect the spaces partitioned by the one material.

[0009] The connector according to the present invention is used to connect a member called a first member and a member called a counter member in various wooden structures including wooden buildings, and the first member is assumed to be wood. The specific configuration of the connector can be freely determined. The connector may be embedded inside the first member, etc., and most of it may be hidden, or it may be placed separately from the first member and the counter member without contacting each other, and exposed between them.

[0010] The other member is not limited to wood such as a pillar or beam, but may be concrete surfaces such as foundations or walls, or various steel materials. In this case, the one member is supported by the foundation, wall, or steel material, and the connector is disposed at the installation location of the one member. Even when both the one member and the other member are wood, the one member and the other member can be disposed freely, and the end faces of both may be in contact and aligned in a straight line, or the end face of the one member may face the side face of the other member, aligning them in an L-shape or a T-shape.

[0011] The connector needs to be attached to both the one material and the other material via some means. As in the past, this means can be a pin or a bolt. In the case of a pin, the pin is inserted from the surface of the one material or the other material and crosses the connector midway, so that the connector is attached to the one material or the other material via the pin. Similarly, in the case of a bolt, it is inserted from the surface of the one material or the other material and crosses the connector midway. In addition, some kind of metal embedding tool may be embedded inside the one material or the other material, a bolt may be inserted from the connector toward the embedding tool, the connector and the embedding tool may be brought into close contact, and the connector may be attached to the one material or the other material via the embedding tool. Note that the embedding tool can be freely selected from various conventional techniques, such as a lag screw or a shaft.

[0012] The large hole penetrates both sides of the connector and functions as a passage for the piping. When the connector is embedded inside one of the materials, a cut-out window hole is formed in the one of the materials at a position overlapping with the large hole, and serves the function of connecting the spaces partitioned by the one of the materials. The size and shape of this large hole can be freely determined and is not limited to a circular cross section. The large hole can also be in multiple locations rather than in one place. However, the connector must ensure that it has the strength to withstand the expected load. In addition, the large hole may not be limited to the one material side, but may penetrate into the other material side.

[0013] As described above, the connector is attached to the one member or the other member via a pin or an embedding tool, and the arrangement of the large hole is limited by this. Therefore, the large hole is formed in the section from the point where the connector is attached to the one member to the point where it is attached to the other member. In addition, various loads such as axial force and bending moment act on the one member, but these loads are transmitted to the connector at the attachment point between the connector and the one member. As a result, a large load does not act on the one member in the section from the attachment point to the connector to the end, and the strength of the one member can be maintained even if a window hole is formed at a position overlapping with the large hole.

[0014] Second The invention relates to the structure of a connector, which is characterized in that it is composed of two separable elements, a main body and an attached part, and the large hole is formed in the attached part. In this invention, since a large hole is formed in the connector, the connector will inevitably be large in size. Therefore, by making the connector separable into a main body and an attached part as in this invention, it becomes easier to manufacture and handle. Moreover, for the main body, a product that has been widely used in the past can be used as is. Effect of the Invention

[0015] No. 1As in the invention of the present invention, a large hole is formed in the connector that integrates one material and the counterpart material, and this large hole connects the spaces partitioned by the one material, allowing various pipes to be laid there. Moreover, various loads acting on the one material are transmitted to the connector at the attachment point between the connector and the one material. Therefore, a large load does not act on the one material at a position overlapping with the large hole, and the strength of the one material is inevitably maintained, and a window hole can be formed to overlap with the large hole.

[0016] Second As in the invention of the present invention, the connector is made of two separable elements, the main body and the attachment, and a large hole is formed in the attachment, which makes it easier to manufacture and handle the connector. Moreover, by using a conventional product for the main body as is, the manufacturing costs can be reduced. [Brief description of the drawings]

[0017] [Figure 1] 1 is a perspective view showing an example of the shape of a connector according to the present invention, which connects a rod-shaped one member and a counterpart member in a straight line, and which has an opening for piping at the boundary between the one member and the counterpart member. Note that the upper part of the figure shows a state in which the one member, the counterpart member, and the connector are separated, and the lower part shows a state in which they are integrated. [Diagram 2] This is a perspective view showing a form in which the same connector as in Fig. 1 is used to connect rod-shaped one member and a counterpart member in a straight line, but an opening for piping is provided on the one member side. Note that the upper part of the figure shows the one member, the counterpart member, and the connector in a separated state, while the lower part shows them in an integrated state. [Diagram 3] FIG. 1 is a perspective view showing a case in which a U-shaped connector is used to connect one member to a counterpart member. The upper part of the figure shows the one member, the counterpart member, and the connector separated, while the lower part of the figure shows them integrated together. [Figure 4]FIG. 4 is a perspective view of a connector similar to those in FIGS. 1 and 3, in which the upper part of the figure shows a connector having two large holes formed in a rectangular steel plate, and the lower part of the figure shows a T-shaped connector. [Diagram 5] FIG. 13 is a perspective view showing a case in which one member and a counterpart member are connected using a stepped connector. [Figure 6] FIG. 6 is a perspective view showing a process of connecting the one member and the counterpart member shown in FIG. 5, the upper part of the figure showing an intermediate stage and the lower part of the figure showing the final stage. [Figure 7] FIG. 11 is a perspective view showing a case where one member and a counterpart member are connected using a stepped connector, the connector being divided into two elements: a main body and an attachment part. [Figure 8] FIG. 8 is a perspective view showing a process of connecting the one member and the counterpart member shown in FIG. 7, the upper part of the figure showing an intermediate stage and the lower part of the figure showing the final stage. [Figure 9] FIG. 1 is a perspective view showing a case in which a square-bar-shaped connector is used to connect one member to a counterpart member, and this connector is divided into two elements: a main body and an attachment part. [Figure 10] FIG. 10 is a perspective view showing a process of connecting the one member and the counterpart member shown in FIG. 9, the upper part of the figure showing an intermediate stage and the lower part of the figure showing the final stage. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] FIG. 1 shows an example of the shape of the connector 11 according to the present invention, which connects rod-shaped one member 81 and counterpart member 91 in a straight line and secures an opening for piping at the boundary between the one member 81 and the counterpart member 91. The upper part of the figure shows a state in which the one member 81, the counterpart member 91, and the connector 11 are separated, and the lower part shows a state in which they are integrated. Here, the one member 81 and the counterpart member 91 are both made of wood, and by connecting their end faces to each other, the two are essentially integrated into one member. The connector 11, which connects the one member 81 and the counterpart member 91, is a simple rectangular steel plate, which is disposed so as to straddle the boundary between the one member 81 and the counterpart member 91. For this purpose, a slit 87 extending in the longitudinal direction of the one member 81 is machined at the center of the end face of the one member 81 in order to insert the connector 11, and a slit 97 is similarly machined for the counterpart member 91. Therefore, the connector 11 is embedded inside the slits 87 and 97.

[0019] A fixing pin 78 is used to attach the connector 11 inserted into the slit 87 to the one member 81. The fixing pin 78 is driven into the side of the one member 81 and intersects with the connector 11 on the way thereto, so that the one member 81 and the connector 11 are integrated and cannot be separated. A horizontal hole 88 is machined in the side of the one member 81 in order to drive in the fixing pin 78, and the horizontal hole 88 intersects with the slit 87 on the way thereto and reaches the opposite side. The horizontal hole 88 has an inner diameter that can hold the fixing pin 78 without loosening, and three horizontal holes 88 are arranged vertically in the figure. A horizontal hole 98 is also machined in the counterpart member 91 in the same manner. The connector 11 has a pin hole 38 formed in a position that is concentric with each of the horizontal holes 88 and 98, but the pin hole 38 is located near the end of the connector 11.

[0020] When one member 81 and the counterpart member 91 are connected using the connector 11, in order to communicate the spaces partitioned by the one member 81 etc., a half-moon-shaped window hole 89 is machined in advance near the center of the end face of the one member 81. Similarly, a window hole 99 is machined in advance near the center of the end face of the counterpart member 91. Also, in the center of the connector 11, a large hole 39 is formed at a position overlapping without any step with the left and right window holes 89, 99, and the window holes 89, 99 and the large hole 39 are lined up to ensure an opening for piping.

[0021] When one member 81 and the counterpart member 91 are connected, the connector 11 is inserted into the slit 87 of the one member 81, and then the fixing pin 78 is driven from the horizontal hole 88 of the connector 11 toward the pin hole 38, thereby attaching the connector 11 to the one member 81. At this time, half of the connector 11 protrudes from the end face of the one member 81, and the window hole 89 of the one member 81 and the large hole 39 of the connector 11 overlap without any step. Thereafter, the protruding connector 11 is inserted into the slit 97 of the counterpart member 91, and the fixing pin 78 is driven from the horizontal hole 98 of the counterpart member 91 toward the pin hole 38, whereby the one member 81 and the counterpart member 91 are connected via the connector 11, as shown in the lower part of the figure. Thereafter, the window holes 89, 99 and the large hole 39 overlap without any step, and a circular opening is secured there, allowing various pipes to be laid.

[0022] In this figure, the attachment position between one member 81 and connector 11 is the driving position of fixing pin 78, and various loads acting on one member 81 are transmitted to connector 11 at this position. Therefore, in the section from this position to the end face of one member 81, no large load acts on one member 81, and even if a window hole 89 is machined in one member 81, the strength of one member 81 does not decrease. As a result, it is easy to make window hole 89 as large as possible. The same is true for counterpart member 91, and no large load acts on the section from the driving position of fixing pin 78 to the end face of counterpart member 91, and it is easy to make window hole 99 as large as possible.

[0023] In Fig. 2, the same connector 11 as in Fig. 1 is used, and both of them are rod-shaped, and one member 81 and the counterpart member 91 are connected in a straight line, but an opening for piping is provided on the one member 81 side. The upper part of the figure shows the one member 81, the counterpart member 91, and the connector 11 in a separated state, and the lower part shows them in an integrated state. The connector 11 used here is exactly the same as that in Fig. 1, and both the one member 81 and the counterpart member 91 have slits 87, 97 extending from the center of their end faces, and the connector 11 is inserted therein. However, in this case, the slit 87 in the one member 81 is long, and the slit 97 in the counterpart member 91 is short, so that the connector 11 is necessarily positioned biased toward the one member 81. For this reason, the window hole 89 is only formed in the one member 81.

[0024] The load acting on one member 81 is transmitted to the counterpart member 91 via the fixing pin 78 and the connector 11. Therefore, in the section of one member 81 from the vicinity of the machining position of the lateral hole 88 to the end face, a large load does not act on the one member 81, and the strength of the building or the like is not reduced by the window hole 89. However, for the connector 11, the size of the large hole 39 needs to be determined on the premise that the necessary strength can be secured.

[0025] 3 shows a case where one member 81 and the counterpart member 92 are connected using a U-shaped connector 13, and the upper part of the figure illustrates a state in which the one member 81, the counterpart member 92, and the connector 13 are separated, while the lower part of the figure illustrates a state in which they are integrated. The counterpart member 92 here extends vertically like a pillar, and an end face of the one member 81 comes into contact with the side surface of its upper part, and the one member 81 and the counterpart member 92 are connected in an L-shape via the connector 13. The connector 13 is formed by bending a steel plate into a U-shape, and is composed of a front plate 33 located in the center and side plates 35 protruding from both the left and right sides of the front plate 33. The front plate 33 comes into contact with the side surfaces of the counterpart member 92, and the two side plates 35 are inserted into slits 87 in the one member 81. The slits 87 extend from the end face of the one member 81 and are necessarily arranged in two rows. In addition, in order to accommodate the front panel 33 in the center of the end face of the one member 81, a step is provided between the slits 87.

[0026] Tenons 34 protruding toward the side surface of the counterpart member 92 are formed at two positions, upper and lower, on the front plate 33 of the connector 13, and corresponding mortise holes 94 are machined on the side surface of the counterpart member 92, and the movement of the connector 13 is restricted by fitting the tenons 34 into the mortise holes 94. The counterpart member 92 and the connector 13 are further integrated with a fixing bolt 74. The fixing bolt 74 is inserted between the two side plates 35 toward the center of the tenon 34, and its tip portion reaches an opposing hole 95 on the opposite side of the mortise hole 94. After inserting a washer 72 into the tip portion of the fixing bolt 74, a nut 75 is screwed and tightened, and the connector 13 is in close contact with the side surface of the counterpart member 92. At this time, the head of the fixing bolt 74 is housed inside the tenon 34.

[0027] After the connector 13 is attached to the other member 92, the side plate 35 of the connector 13 is inserted into the slit 87 of the one member 81, and then the fixing pin 78 is driven into the one member 81, thereby attaching the one member 81 to the connector 13. For this purpose, a horizontal hole 88 is machined in the side surface of the one member 81, and the horizontal hole 88 crosses the two rows of slits 87 and reaches the opposite surface. The side plate 35 is also formed with a pin hole 38 and a pin groove 37 for inserting the fixing pin 78. Connectors 13 having such a configuration have existed in the past, but in this connector 13, the length of the side plate 35 (the length from the connection part with the front plate 33 to the end face) is increased, and a large hole 39 is formed in the section from the connection part with the front plate 33 to the pin hole 38. Naturally, the large hole 39 is formed in each of the two side plates 35. Furthermore, a window hole 89 is machined in the one member 81 corresponding to the large hole 39.

[0028] When connecting the one member 81 and the counterpart member 92, first, the front plate 33 of the connector 13 is brought close to the side surface of the counterpart member 92, the tenon 34 of the connector 13 is fitted into the tenon hole 94 of the counterpart member 92, and the front plate 33 is brought into contact with the counterpart member 92. Next, the fixing bolt 74 is inserted from the connector 13 toward the counterpart member 92, and the nut 75 is screwed onto the tip of the fixing bolt 74 to attach the connector 13 to the counterpart member 92. Thereafter, the side plate 35 of the connector 13 is inserted into the slit 87 of the one member 81, and the horizontal hole 88 of the one member 81 and the pin hole 38 of the connector 13 are concentrically aligned, and then the fixing pin 78 is driven into the horizontal hole 88, whereby the one member 81 and the counterpart member 92 are connected via the connector 13, as shown in the lower part of the figure. At this time, the window hole 89 and the large hole 39 overlap without any step, and an opening for piping is secured.

[0029] The load acting on one member 81 is transmitted to the counterpart member 92 via the fixing pin 78 and the connector 13. Therefore, in the section of one member 81 from the vicinity of the machining position of the lateral hole 88 to the end face, a large load does not act, and the strength of one member 81 is not reduced by the window hole 89. Note that the lateral holes 88 of one member 81 are machined in three places, top and bottom, and the fixing pin 78 is driven into the topmost one beforehand, so that when the side plate 35 is inserted into the slit 87, this fixing pin 78 fits into the pin groove 37, thereby preventing one member 81 from falling, and then the fixing pin 78 is driven into the remaining two lateral holes 88.

[0030] FIG. 4 shows connectors 12, 14 similar to those in FIG. 1 and FIG. 3. In the upper part of the figure, the connector 12 is depicted with two large holes 39 formed in a rectangular steel plate, and in the lower part of the figure, a T-shaped connector 14 is depicted. The connector 12 in the upper part of this figure is similar to that in FIG. 1, but the extension of the connector 11 in FIG. 1 is increased, and large holes 39 are formed in two places, one on the left and one on the right. As a result of providing two large holes 39 in this way, window holes 89, 99 are machined in both the one member 81 and the counterpart member 91, and openings for piping are secured in two places. The load acting on the one member 81 is transmitted to the counterpart member 91 via the fixing pin 78 and the connector 12. Therefore, a large load does not act on the section from the vicinity of the machining position of the lateral holes 88, 98 to the end face of either the one member 81 or the counterpart member 91, and even if the window holes 89, 99 are machined in this section, there is no decrease in strength.

[0031] The lower connector 14 in Fig. 4 is similar to that in Fig. 3, but here, the side plate 35 is T-shaped with only one side plate 35 protruding from the center of the front plate 33. Then, after the front plate 33 is brought into contact with the side surface of the counterpart member 92, the connector 14 is attached to the counterpart member 92 by inserting the fixing nail 73. The side plate 35 is formed with a large hole 39, a pin hole 38, and a pin groove 37, as in the case of Fig. 3, and after the side plate 35 is inserted into the slit 87 of the one member 81, the fixing pin 78 is driven into the horizontal hole 88 of the one member 81, whereby the one member 81 and the counterpart member 92 are connected via the connector 14. Thereafter, the window hole 89 and the large hole 39 overlap without any step, and an opening for piping is secured.

[0032] 5 shows a case where one member 81 and a counterpart member 92 are connected using a stepped connector 15. Here, the one member 81 extends horizontally, and the counterpart member 92 extends vertically like a pillar. The side surface of the counterpart member 92 faces the end surface of the one member 81, but they do not come into contact with each other, and the connector 15 and the counter metal fitting 25 are sandwiched between them. This connector 15 is a block cut from a steel material, one side surface of which is cut off in a stepped shape, and an upward step surface 41 is formed in the middle of this side surface. A female screw 42 is formed in the center of the step surface 41, and pin holes 43 are formed on both sides of the female screw 42. In addition, a loophole 44 is formed in the wall surfaces located above and below the step surface 41. The loophole 44 reaches the opposite surface, and the inside diameter of the entrance side is enlarged.

[0033] The connector 15 in this figure cannot be used alone, and is intended to be used together with the mating metal fitting 25. The mating metal fitting 25 is a block cut from steel, like the connector 15, but one side of the metal fitting is cut out in a stepped shape, and a downward step surface 45 is formed in the middle of the side. The step surface 45 of the mating metal fitting 25 is brought into contact with the step surface 41 of the connector 15, and the wall surfaces above and below the step surfaces 41 and 45 are also brought into contact with each other. Furthermore, the side surfaces of the connector 15 and the mating metal fitting 25 are aligned without any steps, so that the connector 15 and the mating metal fitting 25 become one rectangular block. In the mating metal fitting 25, a loophole 48 is formed in the wall surfaces above and below the step surface 45. The loophole 48 reaches the opposite surface, but the inside diameter of the entrance side is enlarged.

[0034] After the connector 15 and the mating fitting 25 come into contact with each other to form a single rectangular mass, the pull bolt 76 and the through pin 77 are used to integrate the two so that they cannot be separated. For this purpose, the mating fitting 25 is formed with a vertical hole 46 and a pin hole 47 extending from its upper surface toward the step surface 45. The vertical hole 46 is for inserting the pull bolt 76, and is disposed at the center of the step surface 45, and is aligned concentrically with the female thread 42 of the connector 15. The pin hole 47 is for inserting the through pin 77, and is disposed in two places so as to sandwich the vertical hole 46, and is aligned concentrically with the pin hole 43 of the connector 15. When the pull bolt 76 is actually inserted into the vertical hole 46 and its tip is screwed into the female thread 42, and then the pull bolt 76 is tightened, the connector 15 is pulled to the mating fitting 25, and the connector 15 and the mating fitting 25 are integrated. Furthermore, when a through pin 77 is inserted from the pin hole 47 of the mating fitting 25 towards the pin hole 43 of the connector 15, a large load can be transmitted between the connector 15 and the mating fitting 25.

[0035] To attach the connector 15 to the one member 81, an embedding tool 61 is embedded in the one member 81. To attach the counter metal fitting 25 to the counter member 92, an embedding tool 61 is also embedded in the counter member 92. The embedding tool 61 is a metal part that is firmly integrated with the one member 81 and the counter member 92 and functions as a mounting part for the connector 15 and the counter metal fitting 25. Various types of embedding tools can be selected, but a lag screw is used here. A spirally extending convex rib 66 protrudes from the side peripheral surface of the embedding tool 61, and a hexagonal head 65 is formed on one end surface of the embedding tool 61, and a female thread 64 is formed in the center of the hexagonal head 65. A pilot hole 86 is machined at two locations, one above and one below, on the end surface of the one member 81, and the embedding tool 61 is embedded therein. Similarly, pilot holes 96 are machined at two locations, one above and one below, on the side surface of the counter member 92, and the embedding tool 61 is also embedded therein. At this time, the protruding strips 66 of the embedding tool 61 bite into the inner circumferential surfaces of the pilot holes 86 and 96, and the embedding tool 61 is firmly integrated with the one member 81 and the other member 92.

[0036] After embedding the embedding tool 61 in both the one member 81 and the counterpart member 92, the connector 15 is brought into contact with the end face of the one member 81, and then the fixing bolt 74 is inserted from the loophole 44 of the connector 15 toward the female thread 64 of the embedding tool 61 and tightened, whereby the connector 15 is attached to the one member 81. Similarly, after bringing the counter fitting 25 into contact with the side surface of the counterpart member 92, the fixing bolt 74 is inserted from the loophole 48 of the counter fitting 25 toward the female thread 64 of the embedding tool 61 and tightened, whereby the counter fitting 25 is attached to the counterpart member 92. Note that the head of the fixing bolt 74 after tightening is accommodated on the entrance side of the loopholes 44, 48 and does not protrude from the side surface of the connector 15 or the counter fitting 25.

[0037] The connector 15 is sandwiched between the end face of the one member 81 and the side face of the counterpart member 92, and the one member 81 and the counterpart member 92 do not come into contact with each other. The connector 15 is integrated with the end face of the one member 81, and therefore functions as an extension of the one member 81. A large hole 39 is formed in the side face of the connector 15, which allows the spaces partitioned by the one member 81 to communicate with each other, and ensures an opening for the piping. Therefore, in this embodiment, an opening for the piping is not required to be made inside the one member 81. As for the embedding tool 61, in addition to the lag screw shown in this figure, it is possible to freely select a form in which a metal rod is fixed by adhesion, a form in which a shaft is fixed by a pin, or the like.

[0038] 6 shows the process of connecting one member 81 and a counterpart member 92 shown in FIG. 5, with the upper part of the figure showing an intermediate stage and the lower part of the figure showing the final stage. In the state shown in FIG. 5, the mating metal fitting 25 is brought into contact with the side surface of the counterpart member 92, and then the fixing bolt 74 is inserted from the side surface of the mating metal fitting 25 toward the embedding tool 61, thereby attaching the mating metal fitting 25 to the counterpart member 92. Furthermore, the connector 15 is brought into contact with the end surface of the one member 81, and then the fixing bolt 74 is inserted from the side surface of the connector 15 toward the embedding tool 61, thereby attaching the connector 15 to the one member 81. Note that the head of the fixing bolt 74 after tightening is embedded inside the connector 15 and the mating metal fitting 25, and therefore does not prevent the surface contact between the connector 15 and the mating metal fitting 25. Furthermore, the positions of the fixing bolt 74 inserted into the connector 15 are adjusted so that they do not intersect with the large hole 39, and the upper limit of the size of the large hole 39 is determined by the position of the fixing bolt 74 as well as the strength of the connector 15.

[0039] As shown in the lower part of the figure, after the connector 15 and the counter metal fitting 25 are brought into surface contact, a pull bolt 76 is inserted from the top surface of the counter metal fitting 25 and tightened to pull the connector 15 towards the counter metal fitting 25, and the two are integrated. Furthermore, a penetration pin 77 is inserted from the top surface of the counter metal fitting 25 and penetrates both the counter metal fitting 25 and the connector 15, making it possible to transmit tensile loads and shear loads, and in this state the connection between the one member 81 and the counterpart member 92 is completed.

[0040] In this figure, the connector 15 and the counter metal fitting 25 are aligned with the width of one member 81, and the sides from the one member 81 to the counter member 92 are aligned without any steps. Moreover, the one member 81 and the counter member 92 are arranged apart without contacting each other, with the connector 15 and the counter metal fitting 25 sandwiched between them, and the connector 15 and the counter metal fitting 25 are exposed to the outside without being covered. The large hole 39 of the connector 15 is located in an extension of the end face of the one member 81, and it still communicates the spaces partitioned by the one member 81.

[0041] 7 shows a case where one member 81 and a counterpart member 92 are connected using a stepped connector 16, and this connector 16 is divided into two elements, a main body 21 and an attached portion 22. Here, the one member 81 extends horizontally, and the counterpart member 92 extends vertically like a pillar. An end face of the one member 81 comes into contact with a side face of the counterpart member 92, and a storage groove 85 is machined in the center of the end of the one member 81 to accommodate the connector 16 and the like. The connector 16 is composed of a main body 21 and an attached portion 22, and the main body 21 is a block cut from a steel material, one side face of which is cut off in a stepped shape, and an upward step surface 41 is formed in the middle of this side face, a female screw 42 is formed in the center of the step surface 41, and pin holes 43 are formed on both sides of the female screw 42. In addition, a loophole 44 is formed in the wall faces located above and below the step surface 41. The through hole 44 reaches the opposite surface, but the inside diameter of the inlet side is enlarged.

[0042] The accessory 22 is a rectangular block whose height and width are aligned with those of the main body 21 and which comes into contact with the side surface of the main body 21 (the side opposite to the side surface with the stepped surface 41). The accessory 22 is formed with a large hole 39 which functions as an opening for piping, and a relay hole 29 is formed at a position concentric with the escape hole 44 of the main body 21, which reaches the opposite surface. The relay hole 29 is positioned so as not to intersect with the large hole 39.

[0043] The connector 16 in this figure is composed of a main body 21 and an accessory part 22, but it is impossible to use these two elements alone, and it is assumed that it will be used together with a mating metal fitting 26. The mating metal fitting 26 is a block of cut steel material, like the main body 21, but one side of the metal fitting 26 is cut out in a stepped shape, and a downward step surface 45 is formed in the middle of the side. The step surface 45 of the mating metal fitting 26 is brought into contact with the step surface 41 of the main body 21, and the wall surfaces located above and below the step surfaces 41 and 45 are also brought into contact with each other, and the sides of the main body 21 and the mating metal fitting 26 are aligned without any steps, so that the main body 21, the mating metal fitting 26, and the accessory part 22 together form a single rectangular block. In the mating metal fitting 26, a loophole 48 is formed in the wall surfaces located above and below the step surface 45. The loophole 48 reaches the opposite surface, but the inside diameter of the entrance side is enlarged.

[0044] After the main body 21 and the counter fitting 26 come into contact with each other to form a single rectangular mass, the pull bolt 76 and the through pin 77 are used to integrate the two so that they cannot be separated. For this purpose, the counter fitting 26 is formed with a vertical hole 46 and a pin hole 47 extending from its upper surface toward the step surface 45. The vertical hole 46 is for inserting the pull bolt 76, and is disposed at the center of the step surface 45, and is aligned concentrically with the female thread 42 of the main body 21. The pin hole 47 is for inserting the through pin 77, and is disposed in two places so as to sandwich the vertical hole 46, and is aligned concentrically with the pin hole 43 of the main body 21. When the pull bolt 76 is actually inserted into the vertical hole 46 and its tip is screwed into the female thread 42, and then the pull bolt 76 is tightened, the main body 21 is pulled to the counter fitting 26, and the main body 21 and the counter fitting 26 are integrated. Furthermore, by inserting a through pin 77 from the pin hole 47 of the counter fitting 26 toward the pin hole 43 of the main body 21, a large load can be transmitted between the main body 21 and the counter fitting 26.

[0045] In order to attach the connector 16 to the one member 81, an embedding tool 61 is embedded in the one member 81. In order to attach the counter metal fitting 26 to the counter member 92, an embedding tool 61 is also embedded in the counter member 92. The embedding tool 61 is a metal part that is firmly integrated with the one member 81 and the counter member 92 and functions as a mounting part for the connector 16 and the counter metal fitting 26. Various types of embedding tools can be selected, but a lag screw is used here. A spirally extending convex rib 66 protrudes from the side peripheral surface of the embedding tool 61, and a hexagonal head 65 is formed on one end surface of the embedding tool 61, and a female thread 64 is formed in the center of the hexagonal head 65. A pilot hole 96 is machined at two locations, one above and one below, on the side surface of the counter member 92, and the embedding tool 61 is embedded therein. Similarly, pilot holes 86 are machined at two locations, one above and one below, on the inner surface of the storage groove 85 of the one member 81, and the embedding tool 61 is also embedded therein. At this time, the protruding strips 66 of the embedding tool 61 bite into the inner circumferential surfaces of the pilot holes 86 and 96, and the embedding tool 61 is firmly integrated with the one member 81 and the other member 92.

[0046] After embedding the embedding tool 61 in both the one member 81 and the counterpart member 92, the connector 16 is accommodated in the storage groove 85 of the one member 81, and then the fixing bolt 74 is inserted from the loop hole 44 of the main body 21 toward the relay hole 29 of the attachment part 22, and the tip of the bolt is screwed into the female thread 64 of the embedding tool 61. When the fixing bolt 74 is tightened, the main body 21 and the attachment part 22 are integrated and function as one connector 16. After contacting the mating metal fitting 26 with the side surface of the counterpart member 92, the fixing bolt 74 is inserted from the loop hole 48 of the mating metal fitting 26 toward the female thread 64 of the embedding tool 61 and tightened, the mating metal fitting 26 is attached to the counterpart member 92. Note that the head of the fixing bolt 74 after tightening is accommodated on the entrance side of the loop holes 44 and 48 and does not protrude from the side surface of the main body 21 or the mating metal fitting 26.

[0047] A window hole 89 of the same size as the large hole 39 of the attachment 22 is machined in the side of the one member 81, and an opening for the piping is secured by lining up the window hole 89 and the large hole 39 so that they overlap. Note that the one member 81 in this figure is drawn with a part cut away to show the internal structure, but in reality there are two window holes 89 arranged on either side of the storage groove 85. As for the embedding tool 61, in addition to the lag screw shown in this figure, it is possible to freely select a form in which a metal rod is fixed with adhesive, or a form in which a shaft is fixed with a pin, etc.

[0048] 8 shows the process of connecting one member 81 and the counterpart member 92 shown in FIG. 7, with the upper part of the figure showing an intermediate stage and the lower part of the figure showing the final stage. In the state shown in FIG. 7, the mating metal fitting 26 is brought into contact with the side surface of the counterpart member 92, and then the fixing bolt 74 is inserted from the side surface of the mating metal fitting 26 toward the embedding tool 61, thereby attaching the mating metal fitting 26 to the counterpart member 92. Also, the connector 16 is placed in the storage groove 85 of the one member 81, the side surface of the attachment portion 22 is brought into contact with the inner surface of the storage groove 85, and then the main body 21 is brought into contact with the side surface of the attachment portion 22, and then the fixing bolt 74 is inserted from the side surface of the main body 21 toward the embedding tool 61, thereby attaching the connector 16 to the one member 81. Note that this fixing bolt 74 reaches the embedding tool 61 from the main body 21 through the attachment portion 22, and by tightening it, the attachment portion 22 is sandwiched between the one member 81 and the main body 21, and the connector 16 is attached to the one member 81.

[0049] The positions of the fixing bolt 74 inserted into the main body 21 and the large hole 39 are adjusted so that they do not intersect, and the upper limit of the size of the large hole 39 is determined by the strength of the accessory 22 as well as the position of the fixing bolt 74. In addition, since the head of the fixing bolt 74 after tightening is embedded inside the main body 21 and the mating fitting 26, it does not interfere with the surface contact between the main body 21 and the mating fitting 26.

[0050] As shown in the lower part of the figure, after the connector 16 and the counter fitting 26 are brought into surface contact, a pull bolt 76 is inserted from the top surface of the counter fitting 26 and tightened to pull the connector 16 towards the counter fitting 26, and the two are integrated. Furthermore, a through pin 77 is inserted from the top surface of the counter fitting 26 and penetrates both the counter fitting 26 and the connector 16, making it possible to transmit tensile loads and shear loads, and in this state the connection between the one member 81 and the counterpart member 92 is completed.

[0051] The connector 16 and counter fitting 26 in this figure are housed in a storage groove 85 in the one member 81, and are not exposed to the outside. In addition, the window hole 89 in the one member 81 and the large hole 39 in the connector 16 are aligned so as to overlap, and the spaces partitioned by the one member 81 communicate with each other, ensuring an opening for piping. In addition, the attachment position of the one member 81 and the connector 16 is the contact surface between the embedding tool 61 and the accessory part 22. Therefore, a large load is not applied to the position where the window hole 89 is machined, and no strength problems arise in the one member 81.

[0052] FIG. 9 shows a case where one member 81 and a counterpart member 91 are connected using a square bar-shaped connector 17, and this connector 17 is divided into two elements, a main body 23 and an attached part 24. Here, both the one member 81 and the counterpart member 91 extend horizontally, and the end face of the one member 81 comes into contact with the side face of the counterpart member 91. To accommodate the connector 17 and the like, a storage groove 85 is machined in the center of the end of the one member 81. The connector 17 is composed of a main body 23 and an attached part 24, and the main body 23 is structured such that a sharp tip 51 and a receiving band 52 are provided on a simple square bar-shaped steel material. The sharp tip 51 is a portion where the lower end of the main body 23 is finished into a wedge shape, and the receiving band 52 is a band-shaped portion that protrudes laterally from the upper part of the main body 23. In addition, a loophole 54 is formed on the side face of the main body 23 toward the attached part 24. The loophole 54 reaches the opposite face, but the inside diameter of the entrance side is enlarged.

[0053] The attachment 24 is a rectangular block, and is brought into contact with the side surface of the main body 23 (the side opposite to the side with the receiving band 52). The attachment 24 has a large hole 39 formed therein, which functions as an opening for piping. The side surface of the attachment 24 that comes into contact with the main body 23 has a female thread 28 formed at a position concentric with the loophole 54 of the main body 23. The female thread 28 has a bottom that does not reach the large hole 39, and is screwed with a fixing bolt 74 inserted into the loophole 54 of the main body 23. Therefore, after the main body 23 and the attachment 24 are brought into contact with each other, the fixing bolt 74 is inserted into the loophole 54 and its tip is screwed into the female thread 28, and the main body 23 and the attachment 24 are integrated to function as a single connector 17. In addition, the attachment 24 has two relay holes 29 formed at the top and bottom on the side opposite the female thread 28. The relay hole 29 connects the inner peripheral surface of the large hole 39 and the side surface of the attached part 24, and can be used to insert a fixing bolt 74 from the large hole 39 into one member 81, thereby attaching the connector 17 to the one member 81. Considering that the large hole 39 has a circular cross section, an adapter 79 on which the head of the fixing bolt 74 can be placed is incorporated into the entrance of the relay hole 29.

[0054] The connector 17 in this figure is composed of a main body 23 and an accessory part 24, but it is impossible to use these two elements alone, and it is assumed that it will be used together with a mating metal fitting 27. The mating metal fitting 27 has a structure in which the main body 23 is turned upside down, and its sharp tip 55 is a part in which the upper end of the mating metal fitting 27 is finished in a wedge shape, and the receiving band 56 is a band-shaped part that protrudes laterally from the lower part of the mating metal fitting 27. In addition, a loophole 58 is formed on the side of the mating metal fitting 27 toward the counterpart material 91. This loophole 58 reaches the opposite surface, and the inside diameter of the entrance side is enlarged.

[0055] In order to attach the connector 17 to the one member 81, an embedding tool 62 is embedded in the one member 81. In order to attach the counter metal fitting 27 to the counter member 91, an embedding tool 62 is also embedded in the counter member 91. The embedding tool 62 is a metal part that is firmly integrated with the one member 81 and the counter member 91 and functions as a mounting part for the connector 17 and the counter metal fitting 27. Various materials can be selected for the embedding tool 62, but here a deformed steel bar is used. A rib 68 extending in the circumferential direction and the axial direction is formed on the side peripheral surface of the embedding tool 62, and a female thread 64 is formed in the center of one end surface of the embedding tool 62. Then, pilot holes 96 are machined at two places, one above and one below, on the side surface of the counter member 91, and the embedding tool 62 is embedded therein. Similarly, pilot holes 86 are machined at two places, one above and one below, on the inner surface of the storage groove 85 of the one member 81, and the embedding tool 62 is also embedded therein. Incidentally, it is necessary to apply adhesive 69 to embedding tool 62 immediately before embedding, and adhesive 69 firmly integrates one member 81 and other member 91 with embedding tool 62 .

[0056] The embedding tool 62 is embedded in both the one member 81 and the counterpart member 91, and the main body 23 and the attached part 24 are integrated with the fixing bolt 74 to complete the connector 17. The connector 17 is then housed in the storage groove 85 of the one member 81, and the attached part 24 is brought into contact with the inner surface of the storage groove 85. The fixing bolt 74 is then inserted into the relay hole 29 exposed in the large hole 39 of the attached part 24, and its tip is screwed into the female thread 64 of the embedding tool 62, whereby the connector 17 is attached to the one member 81. Similarly, the mating metal fitting 27 is brought into contact with the side surface of the counterpart member 91, and the fixing bolt 74 is inserted from the loop hole 58 of the mating metal fitting 27 toward the embedding tool 62, whereby the mating metal fitting 27 is attached to the counterpart member 91. The head of the fixing bolt 74 inserted into the main body 23 or the mating metal fitting 27 is housed on the entrance side of the loop holes 54 and 58, and does not protrude from the side surface of the main body 23 or the mating metal fitting 27.

[0057] When one member 81 and the counterpart member 91 are connected, the connector 17 is attached to the one member 81 in advance, and the counter fitting 27 is attached to the counterpart member 91. Next, the one member 81 and the like are moved to bring the main body 23 and the counter fitting 27 closer to each other, and when the sharpened portions 51, 55 of both are inserted inside the receiving bands 56, 52 of the other member, the sides of the main body 23 and the counter fitting 27 come into close contact with each other. Naturally, the sharpened portions 51, 55 and the receiving bands 52, 56 are finished in a shape that allows the main body 23 and the counter fitting 27 to come into close contact with each other without loosening.

[0058] After the main body 23 and the counter fitting 27 are brought into close contact, the through pin 77 is inserted to integrate the two so that they cannot be separated. For this purpose, a pin hole 53 is formed in the side of the main body 23, and the counter fitting 27 has a plate protruding from its middle part, at the tip of which a pin hole 57 is formed. Furthermore, in order to realize the insertion of the through pin 77, a lateral hole 88 is machined in the side of the one member 81. The lateral holes 88 are arranged on both side surfaces of the one member 81 with the storage groove 85 in between. Then, by completing the insertion of the through pin 77, the connection between the one member 81 and the counter member 91 is completed.

[0059] A window hole 89 of the same size as the large hole 39 of the attachment 24 is machined in the side of the one member 81, and the window hole 89 and the large hole 39 are aligned so as to overlap, thereby securing an opening for the piping. Note that the one member 81 in this figure is drawn with a part cut out in order to show the internal structure, but in reality, the window holes 89 are arranged in two places, with the storage groove 85 in between. In addition, in the connector 17, the attachment 24 has a width corresponding to the storage groove 85, but the main body 23 has a narrow width due to the balance with the receiving band 52. In addition, the embedding tool 62 is not limited to the deformed steel bar as shown in this figure, and can be freely selected from a form using a lag screw, a form in which the shaft is fixed with a pin, and the like.

[0060] Fig. 10 shows the process of connecting one member 81 and the counterpart member 91 shown in Fig. 9, with the upper part of the figure showing an intermediate stage and the lower part of the figure showing the final stage. The lower left part of the figure shows a state in which the main body 23 and the counter fitting 27 are in close contact with each other. In the state shown in Fig. 9, the counter fitting 27 is brought into contact with the side surface of the counterpart member 91, and then the fixing bolt 74 is inserted from the side surface of the counter fitting 27 toward the embedding tool 62, thereby attaching the counter fitting 27 to the counterpart member 91. The main body 23 and the attachment 24 are integrated with the fixing bolt 74 to complete the connector 17, and then the connector 17 is housed in the storage groove 85 of the one member 81, and the attachment 24 is brought into contact with the inner surface of the storage groove 85. Thereafter, the adapter 79 and the fixing bolt 74 are inserted from the window hole 89 of the one member 81 toward the large hole 39, the adapter 79 is brought into contact with the inner surface of the large hole 39, and then the fixing bolt 74 is inserted toward the embedding tool 62, thereby attaching the connector 17 to the one member 81.

[0061] In this figure, the fixing bolt 74 that screws into the embedding tool 62 of the one member 81 is inserted from inside the large hole 39. Therefore, there is no need to form holes above and below the large hole 39 to insert the fixing bolt 74, and the vertical dimension of the large hole 39 can be further enlarged. Moreover, in this figure, the embedding tools 62 are provided at two locations, one above and one below, but increasing the number of embedding tools would not cause any strength problems. However, since the attachment part 24 transmits all loads acting on the one member 81, it is necessary to ensure the strength of that amount. In addition, the head of the fixing bolt 74 that is inserted into the main body 23 or the counter metal fitting 27 is embedded inside the main body 23 or the counter metal fitting 27, so it does not interfere with the surface contact between the main body 23 and the counter metal fitting 27.

[0062] When the one member 81 and the counterpart member 91 are brought closer to each other and the sharp portions 51, 55 of both the main body 23 and the counter metal fitting 27 are inserted inside the receiving bands 56, 52 of the other member, the side surfaces of the main body 23 and the counter metal fitting 27 come into close contact with each other, and the end face of the one member 81 comes into contact with the side surface of the counterpart member 91, as shown in the lower part of the figure. Thereafter, the through pin 77 is inserted into the horizontal hole 88 of the one member 81 and penetrates both the counter metal fitting 27 and the connector 17, making it impossible for the one member 81 and the counterpart member 91 to be separated and enabling the transmission of tensile loads and shear loads, thereby completing the connection between the one member 81 and the counterpart member 91.

[0063] The connector 17 and the mating fitting 27 in this figure are housed in a storage groove 85 in the one member 81, and are not exposed to the outside. In addition, the window hole 89 in the one member 81 and the large hole 39 in the connector 17 are aligned so as to overlap, and the spaces partitioned by the one member 81 communicate with each other, and an opening for piping is secured. The adapter 79 and the like are exposed in the large hole 39. In addition, the attachment position of the one member 81 and the connector 17 is the contact surface between the embedding tool 62 and the attachment part 24. Therefore, a large load is not applied to the position where the window hole 89 is machined, and there is no problem with the strength of the one member 81.

[0064] The present invention is not limited to the forms depicted in the figures so far, and various forms can be constructed by freely combining the individual components depicted in the figures within a feasible range. However, in any case, the spaces partitioned by the one member 81 are connected to each other by the large hole 39 so as to ensure an opening for piping. Even if a window hole 89 is machined in the one member 81 so as to overlap with the large hole 39, the load is transmitted to the connector in the vicinity thereof, and no large load acts on the one member 81 in the vicinity of the window hole 89. [Explanation of symbols]

[0065] 11 Connector (plate-shaped: one large hole) 12 Connector (plate-shaped: two large holes) 13 Connector (U-shaped) 14 Connector (T-shaped) 15 Connectors (step-shaped) 16 Connector (step-shaped, consisting of a main body and an attachment) 17 Connector (rod-shaped, consisting of main body and accessory part) 21 Main unit 22 Attachment 23 Main unit 24 Attachment 25 Metal fittings 26 Metal fittings 27 Metal fittings 28 Female thread 29 Relay hole 33 Front Panel 34 Tenon 35 Side Panel 37 Pin groove 38 Pin Hole 39 Longshot 41 Step surface 42 Female thread 43 Pin Hole 44 Loophole 45 Step surface (facing metal fittings) 46 Vertical Hole 47 Pin hole (Metal fitting side) 48 Loophole (Metal fitting side) 51 Sharp part 52 Belt 53 Pin Hole 54 Loophole 55 Sharp tip (for metal fittings) 56 Receiving band (for metal fittings) 57 Pin hole (Metal fitting side) 58 Loophole (Metal fitting side) 61 Burying tool (lag screw) 62 Burying tool (deformed steel bar) 64 Female thread 65 Head 66 Convex strip 68 Ribs 69 Adhesive 72 Washer 73 Fixed nail 74 Fixing bolt 75 Nut 76 Push-in bolt 77 Through pin 78 Fixing pin 79 Adapter 81 One side material 85 Storage Groove 86 Pilot hole 87 Slit 88 Side Cave 89 Window Hole 91 Other material (extending horizontally) 92 Other material (extending vertically) 94 Mortise Hole 95 Counter Hole 96 Pilot hole 97 Slit 98 Side Cave 99 Window Hole

Claims

1. a connector that is disposed at the boundary between one member (81) and a counterpart member (91 or 92), and that can connect the one member (81) and the counterpart member (91 or 92) by attaching one end side to the one member (81) and attaching the other end side to the counterpart member (91 or 92); In a section from a point where the one member (81) is attached to the other member (91 or 92) to a point where the other member (91 or 92) is attached to the other member (91 or 92), a piping hole (39) is formed to connect the spaces partitioned by the one member (81), to pass through both side surfaces, and to pass a piping through. The piping hole (39) is formed so that its upper edge is below the upper edge of the one member (81) and its lower edge is above the lower edge of the one member (81).

2. 2. A connector as claimed in claim 1, characterized in that it is composed of two separable elements, a main body (21 or 23) and an accessory part (22 or 24), and the piping hole (39) is formed in the accessory part (22 or 24).

3. A front plate (33) attached to a side surface of the other member (92) and a side plate (35) protruding from the front plate (33), The connector according to claim 1, characterized in that the side plate (35) has a piping hole (39) and is inserted into a slit (87) formed in one of the members (81) so that the piping hole (39) and a piping window hole (89) formed in the one of the members (81) overlap each other.

4. A connector as described in claim 1, characterized in that in the range in which the piping hole (39) is formed in the direction in which the one member (81) extends, there are no attachment points with the one member (81) and with the other member (91 or 92), and the attachment points are located outside that range.

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