JP5451572B2 - Connector - Google Patents

Description

  The present invention relates to a connector for connecting bars in various wooden structures.

  The wooden frame construction method, which is widely used as a construction method for houses, constructs a building skeleton by combining various rods such as foundations, pillars, and horizontal members. In order to secure the strength of the skeleton, it is necessary to firmly connect the adjacent bar members, and measures such as combining a ridge and a ridge groove have been taken for a long time. However, hozo has problems such as a large cross-sectional defect of members, and in recent years, various metal fittings are often used for the purpose of ensuring seismic resistance, and examples thereof include the following patent documents. .

  Patent Document 1 discloses a wood member joining structure for installing a pillar on a foundation or the like, in which a screw member screwed into a pillar and a joint fitting fixed to the surface of the foundation are connected with a long bolt. Yes. By making the long bolt as long as possible, when an external force is applied to the column or the like, the amount of plastic deformation until reaching the final state can be increased, and a tenacious structure can be obtained.

  Moreover, in patent document 2, the fastening hardware for fastening two members, such as a pillar and a beam, is disclosed. The fastening hardware is formed with spiral ridges on the side peripheral surface, and the members are fastened by screwing a bolt into a female screw provided on the axial center thereof. However, the two members are not simply fastened with bolts, but an introduction hole is provided in the fastening hardware to lengthen the bolts to easily cause elastoplastic deformation. Therefore, it becomes easy to absorb an impact caused by an earthquake or the like, and damage to the structure can be suppressed.

JP 2007-77611 A JP 2010-7428 A

  Each of the above-mentioned patent documents is a technique for ensuring the safety of a structure by lengthening a bolt incorporated in a connecting portion between members as much as possible and absorbing energy by its elastic-plastic deformation. However, in these techniques, after a tensile load acts on the bolt and undergoes plastic deformation, the bolt head is loosened, and thereafter the strength of the connecting portion cannot be maintained. Therefore, when an external force is repeatedly applied due to aftershocks, durability may be lost and damage to the structure may increase.

  In addition, various metal fittings conventionally used are often exposed on the surface of a pillar or the like. For example, in Patent Document 1, the joint fitting is exposed at the lower portion of the column, and in Patent Document 2, the surface of the fitting, the head of the bolt, and the like are exposed. In this respect, there is often no problem, but when a structure such as a pillar or horizontal member is visible in a Japanese-style room or the like, it is necessary to take measures such as covering metal parts from the viewpoint of aesthetics.

  The present invention was developed on the basis of such circumstances, and can maintain a certain level of strength even after the bolt incorporated in the connecting portion is plastically deformed, and the whole can be embedded in a bar material and has excellent aesthetics. The purpose is to provide a connector.

  The invention according to claim 1 for solving the above-mentioned problem is used to connect the one material and the other material which are in surface contact with each other, and one material side of the pair of pilot holes extending from the contact surfaces of both materials. A lag screw screwed into the lower hole, a rod-like burying tool embedded in the lower hole on the other material side and fixed with an adhesive, and a stud bolt for pulling the lag screw and the burying tool. The lag screw is provided with an internal screw that is screwed to one end of the stud bolt, and the buried tool is provided with an internal screw that is screwed to the other end of the stud bolt. In addition, one or both of the inner screws is a connecting tool that is located in the back of the inner hole extending from the boundary between the lag screw and the embedded tool.

  The present invention is for integrating two bars in surface contact, but the arrangement of the bars is free, and the end face of the other bar is in contact with the side of one bar. In addition to a letter shape or an L shape, the end faces of two bars may be in contact with each other and aligned in a straight line. In addition, in order to identify two bar materials to be integrated, the designation of one material or the other material is only given for the sake of convenience, and one of the two bar materials is used as one material and the other is used as the other. Use wood. Next, the pilot hole is a hole provided on both the one material side and the other material side with the contact surface between the rods as a base point. Naturally, the prepared hole on the one material side and the other material side are concentrically opposed to each other. Become. In addition, in one connection part, the pilot holes which become a pair are not restricted to one set, and may be a plurality of sets.

  The lag screw is in the shape of a metal round bar and is embedded in the pilot hole of one material, and a spirally extending ridge is formed on the side peripheral surface. This ridge bites into one material, and the lag screw and the one material are firmly integrated. The diameter of the pilot hole processed into one material is substantially the same as the diameter of the lag screw (excluding ridges), and the end surface of the lag screw is brought into contact with the inlet of the pilot hole and then embedded by screwing.

  The embedment tool is a metal rod and is embedded in the pilot hole of the other material facing the lag screw. However, no ridge like a lag screw is formed, and it is integrated with the other material by an adhesive injected into the pilot hole. Therefore, the embedment tool is of a size that can be easily packed in the prepared hole, and a plurality of ribs may be formed on the side peripheral surface in order to improve the adhesiveness of the adhesive.

  The stud bolt is also called an all screw bolt, and is formed by forming a male screw on both sides or the entire area of a simple round bar.In the present invention, the lag screw and the embedded tool embedded in the opposed pilot holes are drawn together, Used to bring both end faces into close contact. An internal thread-like internal thread extending along the axial direction is formed on each of the lag screw and the embedding tool so that the stud bolt can be screwed together.

  In this way, the stud bolt has the function of integrating the one material and the other material, and when a load is applied in the direction of separating the one material and the other material, the impact is reduced by elastic-plastic deformation. Prevents cracks in the bar. In addition, even after the plastic bolt is plastically deformed by a tensile load, the stud bolt does not loosen between the lag screw and the embedded tool to be screwed together, and the connection strength between the one material and the other material can be maintained at a certain level.

  The center hole has a function for making the stud bolt as long as possible. In the present invention, the impact is mitigated by utilizing the elastic-plastic deformation of the stud bolt, and it is preferable to increase the deformation amount of the stud bolt as much as possible. For this reason, it is necessary to dispose the opposing inner screws away from each other, and one or both of the lag screw and the embedding tool are provided with a bore for simply allowing the stud bolt to pass therethrough. Of course, the inner diameter of the center hole is larger than the outer diameter of the stud bolt.

  In addition to the stud bolt having a right-hand thread formed at both ends or the entire region, a stud bolt having a left-hand thread at one end and a right-hand thread at the other end can be used. In the case of a stud bolt that has only a right-hand thread, if it is screwed into the inner thread of the lag screw to a certain depth, contact or biting will occur between them, so that the screw-in depth can be limited. To do.

  When actually connecting one material to the other material using a stud bolt that has only a right-hand thread, first screw the lag screw into the pilot hole of one material, and then attach the stud bolt to the inner screw of the lag screw. Screw one end side and continue screwing until the stud bolt becomes unrotatable. Thereafter, the inner screw of the buried tool is screwed to the other end of the stud bolt, and the screw of the buried tool is further screwed to bring the end surfaces of the lag screw and the buried tool into close contact with each other.

  At this stage, the embedding tool is in a state of protruding from the surface of one material, and then, after applying adhesive to the side hole of the other material and the side peripheral surface of the embedding tool, the embedding tool is embedded in the prepared hole, One material and the other material are brought into close contact with each other and waiting for the adhesive to solidify. In addition, the position where the end surfaces of the lag screw and the embedding tool are in contact with each other does not need to coincide with the contact surface of the one material and the other material, and a certain amount of discrepancy may occur.

  As another form, when using a stud bolt having a left-hand thread on one end and a right-hand thread on the other end, of course, one of the lag screw and the inner thread of the embedded tool is a left-hand thread. To do. When actually connecting the one material to the other material, first, slightly screw the inner screw of the lag screw into one end of the stud bolt, and then slightly screw the inner screw of the buried tool into the other end. Then, only the stud bolt is rotated so that the end faces of the lag screw and the buried tool are brought into close contact with each other.

  In addition, by using a lag screw that can be screwed by inserting stud bolts from both ends, the end surfaces of the two other materials can be brought into contact with the side surface of the one material and connected in a cross shape. In this case, drill a pilot hole so that it penetrates the side surface of one material, screw a lag screw into it, and then insert stud bolts from both sides so that the two embedded tools face each other. Secure to.

  The invention according to claim 2 is used to connect the central member and the two branch members contacting the side surfaces in a cross shape, and is a central hole that penetrates the central member and opens to the contact surface with both branch members. A lag screw that is screwed into the center hole, a rod-like embedding tool that is embedded in a pilot hole that communicates with the central hole and extends into one branch member, and that is fixed with an adhesive; and the other branch member that communicates with the central hole. An anchoring screw fixed to the extending pilot hole, and a stud bolt for pulling the buried tool and the anchoring tool, and an internal screw screwed into one end side of the stud bolt inside the buried tool An inner screw that is screwed to the other end side of the stud bolt is provided inside the mooring tool, and an inner hole through which the stud bolt can be inserted is provided in the lag screw. It is the coupling tool characterized by this.

  This invention is different from the one described in claim 1 in that it forms a cross-shaped connecting portion in which the end faces of two branch members are in contact with the side surface of one central member. The point that the stud bolt is used is not different from that described in claim 1. However, the stud bolt draws the branch members facing each other. Further, the lag screw is screwed into a central hole that penetrates the side surface of the central member, and further, an inner hole that penetrates both end surfaces is formed so that a stud bolt can be inserted.

  Of the two branch members, an embedding tool is embedded in one and a mooring tool is embedded in the other. The embedding tool is the same as that described in claim 1 and is fixed to the prepared hole by bonding. On the other hand, the anchoring device is in the form of a lag screw or a rod fixed by bonding (similar to an embedding tool). And an internal thread is formed inside the embedding tool and the mooring tool so that it can be screwed into the stud bolt. In addition, the stud bolt can use both what formed only the right-handed screw and what formed the left-handed screw and the right-handed screw.

  In the case of using a lag screw-like anchoring tool, the lag screw is screwed into the center hole of the central member, and the anchoring tool is screwed into the pilot hole of one branch member. Next, one end side of the stud bolt is screwed into the inner screw of the mooring tool, and the other end side is inserted into the inner hole of the lag screw screwed into the center member, and protruded to the opposite side. After that, when the buried tool is screwed to the other end side of the stud bolt and tightened, the branch member comes into contact with one side surface of the central member, and the buried tool protrudes on the opposite side surface. And after apply | coating an adhesive agent to an embedding tool, if the other branch member is fixed to an embedding tool, a cross-shaped connection part will be completed. In addition, when using a rod-shaped thing as a mooring tool, after attaching an embedding tool and a mooring tool on the side of a center material so that it may oppose, two branch members are fixed by adhesion | attachment.

  As in the invention according to claim 1, by configuring the coupling tool with a lag screw screwed into one material, a buried tool fixed by adhesion to the other material, and a stud bolt that draws the lag screw and the buried tool, Even after an excessive load is applied and the stat bolt is plastically deformed, the screwing with the lag screw and the buried tool is maintained. For this reason, the connecting portion is not loosened, and a certain degree of strength can be maintained. Even when an external force is repeatedly applied due to aftershocks, damage to the structure can be reduced.

  In the present invention, since the other member and the buried tool are fixed by bonding, the whole connecting tool can be covered in the bar, and the metal parts can be seen even when the pillar is exposed to the room. There is no aesthetic sense. Moreover, it is advantageous against condensation and fire. If the lag screw is used as an alternative to the buried tool outside of the present invention, some kind of opening is required to tighten the stud bolt, and the entire connecting tool cannot be covered.

  As in the second aspect of the present invention, a lag screw screwed into the center member, a buried tool embedded in one branch member, a mooring tool embedded in the other branch member, and a stud bolt that draws the opposing buried tool and the mooring tool together. By constructing a connecting tool, the two branch members can be connected to the side surface of the central member in a cross shape. Moreover, as in the first aspect of the invention, even when the stud bolt is stretched and plastically deformed, the strength of the connecting portion can be maintained to some extent, and the entire connecting tool can be embedded in the central member or the branch member. it can.

It is a perspective view which shows the structural example of the coupling tool by this invention, and its use condition. It is a longitudinal cross-sectional view which shows the detail of the connection part of FIG. It is a perspective view which shows the state which used this invention for the T-shaped connection part. It is the perspective view and longitudinal cross-sectional view which show the structure using the stud bolt which formed the left screw in the one end side, and formed the right screw in the other end side. It is a perspective view which shows the form which makes two side materials contact the side surface of one material, and comprises a cross-shaped connection part. It is a longitudinal cross-sectional view which shows the detail of the connection part of FIG. It is a perspective view which shows the form which makes two branch members contact the side surface of a center material, and comprises a cross-shaped connection part. It is a longitudinal cross-sectional view which shows the detail of the connection part of FIG.

  FIG. 1 shows an example of the structure of a connector according to the present invention and how it is used. The one material 41 and the other material 51 are both rod-shaped, and a set of connecting tools is used to bring the end surfaces into close contact with each other. The coupling tool includes a lag screw 11, a buried tool 21, and a stud bolt 31. The lag screw 11 is screwed into one material 41, and the buried tool 21 is buried in the other material 51. And the stud bolt 31 is used in order to draw the lag screw 11 and the embedded tool 21 together.

  The lag screw 11 has a cylindrical shape made of metal, and has a spiral ridge 12 formed on the side peripheral surface, and a hexagonal portion 14 formed on one end surface for hooking a tool. Further, a center hole 13 extending in the axial direction with a simple circular cross section is formed at the center of the hexagonal portion 14. The inner hole 13 has an inner diameter into which the stud bolt 31 can be inserted with a margin. An inner screw 15 for screwing the stud bolt 31 is formed under the inner hole 13.

  On the other hand, a prepared hole 42 for processing the lag screw 11 is machined in the center of the end face of the material 41. This inner diameter is equal to the outer diameter of the lag screw 11 (the outer diameter of the cylindrical portion, excluding the ridge 12), and the ridge 12 bites into the one material 41, so that the lag screw 11 and the one material are 41 is firmly integrated. When the lag screw 11 is screwed, the hexagonal portion 14 is always located on the rear end side in order to give a rotational force.

  The embedding tool 21 is also made of a metal column, but has a rib 22 extending in the circumferential direction and the axial direction on the side circumferential surface, and a hexagonal portion 24 on one end surface for hooking a tool. is there. Further, an inner screw 25 for screwing the stud bolt 31 is formed at the center of the hexagonal portion 24. Under the inner screw 25, an inner hole 23 reaching the lower end surface with a simple circular cross section is formed. The inner hole 23 has an inner diameter into which the stud bolt 31 can be inserted with a margin.

  A pilot hole 52 for embedding the embedding tool 21 is processed in the center of the end surface of the other material 51. This inner diameter is slightly larger than the outer diameter of the rib 22 of the embedding tool 21. And before embedding the embedding tool 21, the adhesive agent 55 is apply | coated to the side peripheral surface of the embedding tool 21, and the internal peripheral surface of the prepared hole 52, and the embedding tool 21 and the other material 51 are integrated by adhesion | attachment. The rib 22 is formed to improve the adhesive strength, and a groove may be processed on the inner peripheral surface of the prepared hole 52 in the same manner.

  The stud bolt 31 is a metal rod having a simple circular cross section, and right and left screws 32 and 33 are formed on both upper and lower ends. The space between the right screws 32 and 33 is a simple circular cross section. Furthermore, in order to cause elastoplastic deformation smoothly, low yield point steel can be used as a raw material. Further, the total length is adjusted so that the lag screw 11 and the embedment tool 21 can be reliably drawn, and the formation range of the right screws 32 and 33 is adjusted so as not to hinder a series of operations. The internal screws 15 and 25 of the lag screw 11 and the embedding tool 21 are right screws that can be screwed into the stud bolt 31 as a matter of course.

  When the one member 41 and the other member 51 are connected using this connector, the operation proceeds as indicated by the arrows in the figure. In the first stage, the lag screw 11 is screwed into the prepared hole 42 of the one material 41 as shown in the upper left figure. At this time, since the hexagonal portion 14 is on the rear end side, the inner screw 15 is positioned in the back of the prepared hole 42. Next, as shown in the upper right figure, the stud bolt 31 is inserted into the inner hole 13 of the screwed lag screw 11, and the lower right screw 32 is screwed into the inner screw 15 of the lag screw 11. When the screwing progresses and the entire right screw 32 enters the inner screw 15, the stud bolt 31 is fixed by being engaged between the two, and the stud bolt 41 is fixed from the end surface of the one material 41 as shown in the lower left figure. The upper half of 31 protrudes.

  Next, when the buried tool 21 is inserted into the protruding stud bolt 31, the upper right screw 33 is screwed into the inner screw 25, and the hexagonal portion 24 is further tightened with a tool, as shown in the lower right figure. The end surfaces of the lag screw 11 and the buried tool 21 are brought into close contact with each other via the stud bolt 31, and the buried tool 21 is integrated with the one material 41. Finally, the adhesive 55 is applied to the side peripheral surface of the embedding tool 21 and the inner peripheral surface of the pilot hole 52 of the other material 51, the embedding tool 21 is embedded in the pilot hole 52, and the adhesive 55 is solidified. The one material 41 and the other material 51 are forcibly adhered.

  FIG. 2 shows the details of the connecting portion of FIG. 1 in a longitudinal section. As shown in the upper left figure, the lag screw 11 and the embedding tool 21 have both inner holes 13 and 23 facing each other, and inner screws 15 and 25 are formed in the back thereof. The total length increases. In addition, the extension of the right screw 32 below the stud bolt 31 is shorter than the paired inner screw 15 and the range in which the right screw 32 and the inner screw 15 can be screwed is limited. Therefore, when the screwing is continued, the right screw 32 and the inner screw 15 are bitten, and the stud bolt 31 is fixed to the inner screw 15 so that the lag screw 11 and the buried tool 21 are firmly fixed. Can be adhered to.

  After the construction, the one material 41 and the other material 51 are connected via the stud bolt 31 as shown in the upper right figure. The lag screw 11 is integrated with the one material 41 by the ridges 12, and the embedding tool 21 is integrated with the other material 51 by the adhesive 55. Thereafter, when an excessive external force is applied due to an earthquake or the like, plastic deformation occurs in the stud bolt 31 as shown in the lower left figure. This deformation reduces the impact and prevents damage to the one material 41, the other material 51, and the like. Further, even after the stud bolt 31 is plastically deformed, no looseness occurs in the threaded portion with the lag screw 11 and the embedment tool 21, and the strength of the connecting portion is maintained to some extent.

  After the stud bolt 31 is plastically deformed, when an external force is applied to press the one material 41 and the other material 51, the stud bolt 31 is plastically deformed so as to be crushed and meandered as shown in the lower right figure. The connecting part is restored as it was originally. In FIG. 2, the boundary between the lag screw 11 and the embedment tool 21 and the boundary between the one material 41 and the other material 51 are made to coincide with each other.

  FIG. 3 shows a state in which the present invention is used for a T-shaped connecting portion. In the present invention, if the pilot holes 42 and 52 can be processed in the member, in addition to connecting the end faces of the two bars as shown in FIG. 1, the end face of the column on the side surface of the horizontal member as shown in FIG. It can be used in various places such as a T-shaped connecting portion that comes into contact. Moreover, in one connecting portion, the connecting tool to be used is not limited to one set, and a plurality of sets may be used. In this figure, four sets of connectors are used, two of which have the lag screw 11 screwed into the horizontal member, and the remaining two have the lag screw 11 embedded in the column, Unbalance has been eliminated.

  FIG. 4 shows a configuration using a stud bolt 35 in which a left screw 36 is formed on one end side and a right screw 33 is formed on the other end side. Each figure so far uses a general stud bolt 31 having right screws 32 and 33 formed at both ends. However, as shown in this figure, a bolt having a left screw 36 and a right screw 33 can also be used. . In this case, of course, one of the pair of inner screws 15 and 25 needs to be a left screw, and in this figure, the inner screw 15 of the lag screw 11 is a left screw. In addition, in order to rotate the stud bolt 35 smoothly, the hexagon hole 37 is provided in the end surface.

  FIG. 5 shows a form in which two other members 51 are brought into contact with the side surface of one member 41 to form a cross-shaped connecting portion. In this case, the pilot hole 42 processed into the one material 41 penetrates the side surface, and the lag screw 17 screwed into the pilot hole 42 has the inner hole 13 formed at both end faces, The inner screw 15 is formed so as to connect the upper and lower inner holes 13, and the stud bolt 31 can be inserted from both sides. In addition, the two other members 51 have a prepared hole 52 formed in the end surface, and the embedded tool 21 is fixed with an adhesive 55 therein. Note that both the stud bolt 31 and the embedding tool 21 have the same shape and symmetrical arrangement.

  FIG. 6 shows the details of the connecting portion of FIG. 5 in a longitudinal section. On the other hand, the lag screw 17 to be screwed into the material 41 has the inner hole 13 formed at both end faces, and the inner screw 15 formed at the back thereof, and the stud bolt 31 can be inserted from above and below. At the time of construction, a total of two stud bolts 31 are screwed to the inner screw 15, and then the stud bolt 31 is screwed to the inner screw 25 of the buried tool 21, so that the two buried tools 21 are attached to the lag screw 17. Adhere closely. Thereafter, when the branch member 51 is fixed to the embedding tool 21 with the adhesive 55, a cross-shaped connecting portion in which the other material 51 protrudes from both side surfaces of the one material 41 is completed.

  FIG. 7 shows a form in which two branch members 63 and 66 are brought into contact with the side surface of the central member 61 to form a cross-shaped connecting portion. A center hole 62 penetrating the side surface is processed in the center member 61, and the lag screw 18 is screwed therein. The lag screw 18 is formed with the ridges 12 and the hexagonal portion 14, but has no inner screw 15, and the inner hole 13 penetrates both ends. In the lower branch member 66, the anchor hole 19 is embedded by processing the lower hole 67. The anchoring tool 19 is substantially a lag screw, has a ridge 12 formed on the side peripheral surface, and further has an inner screw 15 formed on the upper end surface.

  The embedding tool 21 is embedded in the upper branch member 63. This is the same as in FIG. The stud bolt 31 is for pulling the anchoring tool 19 and the embedded tool 21 facing each other, and does not screw with the lag screw 18 screwed into the center member 61. At the time of construction, first, the lag screw 18 is screwed into the central member 61, and the anchoring tool 19 is screwed into the lower branch member 66. Next, the stud bolt 31 is inserted into the inner hole 13 on the center member 61 side, and the right screw 32 on the tip side is screwed into the inner screw 15 of the anchoring tool 19. Thereafter, the inner screw 25 of the buried tool 21 is screwed into the right screw 33 on the rear end side of the stud bolt 31, and the branch member 66 and the buried tool 21 are fixed so as to face each other with the center member 61 interposed therebetween.

  FIG. 8 shows the details of the connecting portion of FIG. 7 in a longitudinal section. The lag screw 18 to be screwed into the center member 61 has the inner hole 13 passing through both end faces, and can pass the stud bolt 31. An anchoring tool 19 is screwed into the lower branch member 66, and an inner screw 15 for screwing the stud bolt 31 is formed at the upper end thereof. Further, the upper branch member 63 is fixed to the central member 61 through the burying tool 21. At the time of construction, the branch member 66 and the embedded tool 21 are fixed to face each other with the central member 61 interposed therebetween, and then the branch member 63 is fixed to the embedded tool 21 with an adhesive 55. In this embodiment as well, a plurality of sets of connecting tools can be incorporated into one connecting portion, and a stud bolt 35 having a left screw 36 and a right screw 33 as shown in FIG. 4 can be used.

  7 and 8, a lug screw-like thing is used as the anchoring tool 19, but this anchoring tool 19 is a rod-like object (similar to an embedding tool) fixed to the branch member 66 with an adhesive 55. Can also be replaced. In this case, after screwing the lag screw 18 into the center member 61, the opposing anchoring device 19 and the embedded device 21 are pulled by the stud bolt 31, and the anchoring device 19 and the embedded device 21 are fixed to the side surface of the center member 61. Finally, the adhesive 55 is applied to the anchoring tool 19 and the embedding tool 21, and the two branch members 63 and 66 are fixed.

11 lag screw 12 ridge 13 inner hole 14 hexagonal part 15 inner screw 16 lag screw (the inner screw is a left screw)
17 lag screw (medium hole at both ends, internal screw inside)
18 Lag screw (the inner hole penetrates, there is no inner screw)
19 Mooring tool (lag screw shape)
21 Embedding tool 22 Rib 23 Middle hole 24 Hexagonal part 25 Internal thread 31 Stud bolt (Right thread on both ends)
32 Right-hand thread (one end side)
33 Right-hand thread (other end side)
35 Stud bolt (Left-hand thread on one end, right-hand thread on the other end)
36 Left-hand thread 37 Hexagon hole 41 One material 42 Pilot hole (one material side)
51 Other material 52 Pilot hole (the other material side)
55 Adhesive 61 Center Material 62 Center Hole 63 Branch Member 64 Pilot Hole 66 Branch Member 67 Pilot Hole

Claims (2)

Used to connect one material (41) and the other material (51) in surface contact,
A lag screw (11, 16 or 17) to be screwed into the lower hole (42) on the one material (41) side of the pair of lower holes (42, 52) extending from the contact surfaces of the two materials (41, 51);
A rod-like embedding tool (21) embedded in the prepared hole (52) on the other material (51) side and fixed with an adhesive (55);
A stud bolt (31 or 35) for pulling the lag screw (11, 16 or 17) and the buried tool (21);
With
Inside the lag screw (11, 16 or 17), an internal screw (15) is provided which is screwed to one end of the stud bolt (31 or 35).
An internal screw (25) that is screwed to the other end side of the stud bolt (31 or 35) is provided inside the buried tool (21),
One or both of the inner screws (15, 25) are located behind a center hole (13, 23) extending from a boundary between the lag screw (11, 16 or 17) and the embedding tool (21). A connector characterized by that. Used to connect the central member (61) and the two branch members (63, 66) contacting the side surfaces in a cross shape,
A lag screw (18) screwed into a central hole (62) that passes through the central member (61) and opens in a contact surface with both branch members (63, 66);
A rod-like embedding tool (21) that is embedded in a pilot hole (64) that communicates with the central hole (62) and extends to one branch member (63) and is fixed by an adhesive (55);
A tether (19) secured to a pilot hole (67) communicating with the central hole (62) and extending to the other branch member (66);
A stud bolt (31 or 35) for pulling the buried tool (21) and the mooring tool (19);
With
An internal screw (25) that is screwed to one end side of the stud bolt (31 or 35) is provided inside the embedding tool (21),
Inside the mooring tool (19), an internal screw (15) that is screwed to the other end of the stud bolt (31 or 35) is provided,
The lag screw (18) is provided with a center hole (13) through which the stud bolt (31 or 35) can be inserted.

Images