Connecting structure

Abstract

To provide a connection structure that can bear the propagation of shear load, is excellent in rigidity, and enables accurate arrangement of each part.SOLUTION: A connection structure between one material 71 and the other material 81 uses retaining tools 11, burying tools 21, connection tools 31 and restraint tools 41. The retaining tools 11 are integrated to the one material 71 with an embedding adhesive, but guiding screws 18 are formed on the retaining tools 11. The burying tools 21 are embedded to the other material 81. The connection tools 31 are fitted to be across a contact surface between the one material 71 and the other material 81. The retaining tools 11 and the burying tools 21 are connected through the connection tools 31. The one material 71 is drawn near the other material 81 by screwing the restraint tools 41 to the burying tools 21 at the opposite side of the one material 71. Since the connection tools 31 can bear the propagation of shear load and avoid the lengthening of the retaining tools 11 and the burying tools 21, the connection structure is excellent in rigidity. In addition, each part is accurately arranged by the guiding screws 18 and the connection tools 31.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a connecting structure that can firmly integrate adjacent members in a wooden building. [Background technology]

[0002] The pillars, beams, and other components that make up a wooden building play an important role in ensuring the strength of the structure, and by firmly connecting adjacent components, they can withstand a variety of loads. Various methods have been used since ancient times to firmly connect adjacent components, such as machining joints into the end faces of components, but in recent years, metal parts such as lag screws and bolts have also been used. However, while these metal parts are strong and reliable, they can sometimes detract from the natural atmosphere created by wooden buildings, and their good thermal conductivity can cause condensation. For this reason, metal parts are often embedded inside the components.

[0003] Specific examples of metal parts used to connect members include the patent documents listed below. Patent Document 1, among others, discloses a connector that can be embedded entirely inside two adjacent members, and that maintains a certain level of strength even after a stud bolt connecting two adjacent members is plastically deformed by an earthquake or other event. This connector includes a stud bolt inserted so that it penetrates two members, referred to as a first member and a second member. Furthermore, a lag screw is embedded in the first member and a mounting tool is embedded in the second member so that the stud bolt can be threadedly engaged with the stud bolt. During construction, the lag screw is first mounted on the end face of the first member, and then the lag screw and mounting tool are aligned concentrically via the stud bolt, with the mounting tool protruding from the end face of the first member. An adhesive is then applied to the mounting tool, which is then inserted into the second member. The first and second members are then connected as the adhesive solidifies.

[0004] The following Patent Document 2 discloses a connector that can improve the structural strength of wooden buildings. This connector has a rod-shaped body, a pointed tip, a flange-shaped head, a hollow portion formed inside the body, an injection port serving as the entrance to the hollow portion, and a discharge port serving as the exit of the hollow portion. The tip and head are opposite each other across the body, and the tip is formed with a male thread. The injection port is exposed on the head, and the discharge port is exposed on the outer periphery of the body. Adhesive supplied to the injection port of the head fills and surrounds the outer periphery of the body. During construction, to join two adjacent components, the connector is inserted from one component to the other, and the connector is rotated via the head. The tip of the connector is screwed into the other component to join the components, and the adhesive supplied from the injection port fills the outer periphery of the body, tightly fastening the components together and achieving a rigid joint. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-77545 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-257174 Summary of the Invention [Problem to be solved by the invention]

[0006] The connector disclosed in the aforementioned Patent Document 1 has the advantage of being able to completely conceal metal components, providing excellent aesthetics, and maintaining a certain level of strength even after the stud bolt undergoes plastic deformation. However, this connector has difficulty withstanding loads (shear loads) perpendicular to the axial direction of the stud bolt. Therefore, horizontal use of this connector should be avoided. For example, if this connector is used where the side of a column and the end face of a beam come into contact, the connector will be positioned horizontally and will be unable to withstand downward loads acting on the beam. Furthermore, as in Patent Document 1, a connection structure that pulls two components together with various bolts inevitably requires the bolts to penetrate the two components, elongating their overall length and inducing elastic-plastic deformation. As a result, while this connector has excellent shock absorption capabilities, rigidity remains an issue.

[0007] In addition, when fixing a rod-shaped metal part to a component with adhesive, as in the embedding tool of Patent Document 1 and the joining tool of Patent Document 2, a pilot hole must be drilled in the component to accommodate the metal part. This pilot hole must be slightly larger than the metal part to ensure space for filling with adhesive. As a result, the placement of the metal part becomes unstable. If the adhesive solidifies while offset from the center of the pilot hole, it can cause misalignment with adjacent components, increasing the amount of work required during installation. Furthermore, this misalignment can also cause an uneven amount of adhesive to be filled, potentially preventing the adhesive from performing its intended function.

[0008] The present invention was developed based on these circumstances, and aims to provide a connecting structure that can transmit shear loads, has excellent rigidity, and allows each part to be accurately positioned. [Means for solving the problem]

[0009] The invention of claim 1 for solving the above problem is a connecting structure between one member and a counterpart member, in which the one member is in contact with a side surface of the counterpart member, a pilot hole is provided on the one member side, starting from the contact surface between the one member and the counterpart member, and a through hole is provided on the counterpart member side, the pilot hole and the through hole are aligned concentrically, a rod-shaped retaining device is embedded in the pilot hole, and the retaining device is integrated with the one member by an adhesive, and a leading screw is formed on the tip side of the retaining device, and the leading screw is inserted into the bottom of the pilot hole, and a rod-shaped embedding device is embedded in the through hole, and both the retaining device and the embedding device are connected to each other. A male thread is formed on one side of the pilot hole, a tenon groove with an enlarged inner diameter is provided at the entrance of the pilot hole, and a tenon groove is also provided in the through hole opposite to this, a connector is fitted into the space formed by both tenon grooves, a female thread is formed on the inner peripheral surface of the connector, and the male threads of both the detaining device and the embedding device are screwed onto this female thread, thereby connecting the detaining device and the embedding device, and the side of the counterpart material opposite the tenon groove restrains the embedding device from displacing towards the one material, and the embedding device draws the one material to the counterpart material.

[0010] The connecting structure according to the present invention firmly integrates two adjacent members, such as a pillar and a beam. One of the two members is referred to as the "first member" and the other as the "second member." It is assumed that both the first member and the second member are made of wood, but this is not limited to pure wood and includes various types of laminated wood. Both the first member and the second member are processed into a rod or plate shape, and the first member contacts the side of the second member. A retaining device is embedded in the first member, an embedding device is embedded in the second member, and a connecting device is embedded in the contact surface between the first member and the second member. The retaining device, embedding device, and connecting device are all made of metal, each formed into a predetermined shape.

[0011] The retention device is rod-shaped and is embedded in a pilot hole provided in one material, with the opening of the pilot hole located at the contact surface between the one material and the other material. The retention device is then integrated with the one material using adhesive. Therefore, before embedding the retention device in the one material, adhesive is applied to the retention device and the pilot hole in advance. The pilot hole must be slightly larger than the retention device to ensure space for filling with adhesive. Furthermore, some kind of unevenness is often provided on the circumferential surface of the retention device to ensure reliable adhesion of the adhesive.

[0012] The side of the retaining device that reaches the bottom of the pilot hole (the tip side) has a smaller diameter, and a leading screw is formed there. The leading screw is shaped like a wood screw, but its maximum diameter is smaller than the inner diameter of the pilot hole. After the leading screw contacts the bottom of the pilot hole, it bites into the interior of one material, and the retaining device becomes one with the other material. However, because the leading screw is small in diameter, it is not intended to transmit tensile loads acting on the one material. Furthermore, because the bottom of the pilot hole is conical due to the shape of the tip of the drill used to process it, the leading screw is inevitably guided to the center of the pilot hole. As a result, the pilot hole and the retaining device are aligned concentrically, ensuring space around the entire circumference of the retaining device to be filled with adhesive.

[0013] The embedding tool is rod-shaped and is embedded in a through-hole provided in the counterpart material, and the through-hole is arranged concentrically with the pilot hole in one material and penetrates both side surfaces of the counterpart material. The embedding tool is ensured to have the same length as the through-hole, but it is not necessary to integrate the embedding tool with the counterpart material using adhesive or the like. Note that the detaining tool and the embedding tool are aligned concentrically, but usually two or more sets of detaining tool and embedding tool are arranged in one connecting structure to ensure rigidity.

[0014] The connector is disposed across the contact surface between the one material and the counterpart material, and is responsible for transmitting shear load between the one material and the counterpart material, as well as for connecting the concentrically arranged detention device and buried device. Moreover, the connector is larger than the detention device and buried device, and can accommodate them inside. The connector has a female thread formed inside, into which the detention device or buried device is screwed. For this purpose, the detention device or buried device has a male thread formed on its circumferential side. The male thread of the detention device also plays a role in improving adhesion of adhesive.

[0015] The connector is fitted into the contact surface between the one member and the counterpart member. Therefore, a tenon groove with an enlarged inner diameter is provided at the entrance of the pilot hole of the one member. Similarly, a tenon groove with an enlarged inner diameter is provided in the through hole of the counterpart member. These tenon grooves are sized to accommodate the connector without loosening, and the connector is positioned so as to straddle both tenon grooves, allowing for the transmission of shear load between the one member and the counterpart member. At the bottom of the pilot hole, the pilot hole and the retaining device are aligned concentrically by the pilot screw, while at the opposite entrance side of the pilot hole, the connector aligns the pilot hole and the retaining device concentrically. In this way, the retaining device is restrained from displacement at both ends, ensuring an even distribution of space for the adhesive to be filled.

[0016] The retention tool and the embedding tool are connected via the connecting tool as described above. Therefore, by restraining the embedding tool so that it cannot be displaced relative to the counterpart material, it is possible to prevent the one material from separating from the counterpart material, and further, by applying an axial load to the embedding tool, it is possible to draw the one material toward the counterpart material. To achieve this, it is necessary to restrain the embedding tool from displacing toward the one material on the side of the counterpart material opposite the side that contacts the one material. A specific example of this is a method in which a nut is screwed onto the end of the embedding tool located on the opposite side of the one material. Another example is a method in which a headed bolt is used as the embedding tool, the head of which is received on the side of the counterpart material, and the tip is screwed onto the connecting tool.

[0017] During construction, adhesive is applied to the pilot hole and the retaining device in one material, and then the retaining device is embedded in the pilot hole, with the leading screw of the retaining device biting into the bottom of the pilot hole, and finally the entire retaining device is embedded in the one material. Next, the connector is fitted into the mortise groove of the one material, and the connector is rotated to screw into the retaining device, but the entire connector is not fitted into the mortise groove, and about half of it protrudes from the one material. After that, the one material is brought closer to the other material, and the connector is fitted into the mortise groove of the other material, bringing the one material and the other material into close contact. Finally, the embedding device is embedded in the through hole of the other material, one end of which is screwed into the connector, and a nut or the like is attached to the other end to restrain the displacement of the embedding device, preventing the retaining device from moving as well, and the one material is drawn to the other material.

[0018] In this way, a retaining device is embedded in one material and integrated with the one material using an adhesive, and an embedding device is embedded in the counterpart material, and a connector is fitted across the contact surface between the one material and the counterpart material, connecting the retaining device and the embedding device via the connector, and then restraining the displacement of the embedding device with a nut or the like, thereby making it possible to draw the one material to the counterpart material via the connector and retaining device. Furthermore, the connector can be responsible for transmitting shear load between the one material and the counterpart material. In addition, since the retaining device and the embedding device are connected via the connector, the present invention can avoid requiring longer bolts compared to conventional connecting structures. [Effects of the Invention]

[0019] As in the invention of claim 1, a retaining device, an embedding device, and a connecting device are used as a connection structure between one member and the other member, the retaining device is embedded in the one member and integrated with the one member using an adhesive, the embedding device is embedded in the other member, and the connecting device is fitted so as to straddle the contact surface between the one member and the other member, and the retaining device and the embedding device are connected via the connecting device. The displacement of the embedding device is then restrained with a nut or the like, thereby allowing the one member to be drawn to the other member via the connecting device and the retaining device. Furthermore, the connecting device can transmit shear loads between the one member and the other member. Therefore, when this invention is used to connect a column and a beam, the connecting device can withstand downward loads acting on the beam, providing excellent strength.

[0020] In addition, the present invention connects the indwelling device and the burying device via a connector. This eliminates the need for a long bolt that penetrates the two components being connected, as in conventional connecting structures, and eliminates the loss of rigidity due to the elastic-plastic deformation of the bolt. Furthermore, in the present invention, the cross-section of the indwelling device and the burying device must be large to accommodate the application of adhesive. As a result, elastic-plastic deformation caused by the indwelling device and the burying device is suppressed, further improving rigidity. Furthermore, the leading screw and connector align the indwelling device concentrically with the pilot hole at both ends, allowing for accurate positioning of each component. Furthermore, in the present invention, only one end of the burying device is exposed to the outside, and the indwelling device and the connector are completely embedded within the components, resulting in an aesthetically pleasing design. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing a specific example of a connecting structure according to the present invention, in which one member and a counterpart member are connected in an L-shape. [Figure 2] FIG. 2 is a perspective view showing the process of connecting one member and the counterpart member in FIG. 1, in which the upper part of the figure illustrates the process up to fitting the connector into one member, and the lower part of the figure illustrates the state in which the one member and the counterpart member are in contact with each other. [Figure 3] 3A and 3B are a perspective view and a longitudinal sectional view showing a state in which one member and a counterpart member are connected to each other, respectively, after FIG. 2. [Figure 4] This is a perspective view showing the same connecting structure as in Figure 1, but the buried tool has been replaced with one with an integrated head. [Figure 5] FIG. 10 is a perspective view showing a T-shaped connecting structure in which one member and an opposing member are arranged to face each other and a side surface of the opposing member is sandwiched between them. [Figure 6] 6 is a perspective view showing a process of connecting the opposing member of FIG. 5 to the counterpart member. FIG. [Figure 7] 7A and 7B are a perspective view and a longitudinal sectional view showing a state in which one member, a counterpart member, and an opposing member are connected in a T-shape after FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0022] 1 shows a specific example of a connecting structure according to the present invention, and assumes that one member 71 and the counterpart member 81 are connected in an L-shape. Here, both one member 71 and the counterpart member 81 are made of wood, but one member 71 is a horizontally extending beam and the counterpart member 81 is an upright pillar, with an end face of one member 71 contacting a side face of the counterpart member 81 and multiple parts being arranged to straddle the contact surfaces of both. The connecting structure in this figure is composed of a detention device 11, an embedding device 21, a connecting device 31, and a restraining device 41, with the detention device 11 embedded in one member 71, the embedding device 21 embedded in the counterpart member 81, and the connecting device 31 fitted into the contact surface between the one member 71 and the counterpart member 81.

[0023] The retention device 11 comprises a round rod-shaped body 14 and a lead screw 18 protruding from the tip of the body 14. A male thread 15 is formed on the circumferential side of the body 14. The lead screw 18 has the same structure as a wood screw, but its maximum diameter is smaller than that of the body 14. A hexagonal groove 16 for attaching a tool is formed on the end face of the body 14 opposite the lead screw 18. A pilot hole 74 is formed on the end face of the one member 71 to embed the retention device 11, and a tenon groove 73 with an enlarged inner diameter is formed at the entrance of the pilot hole 74 to fit the connector 31. The lead screw 18 is intended to be inserted into the one member 71 from the bottom of the pilot hole 74. Therefore, the extension of the pilot hole 74 must be determined based on the shape of the body 14.

[0024] The retention device 11 is attached to the one member 71 with adhesive. For this reason, the pilot hole 74 of the one member 71 is made larger than the body 14 of the retention device 11, and adhesive is filled in the gap between them. The male thread 15 of the body 14 plays a role in ensuring that the adhesive is adhered. In addition, due to its size, the leading screw 18 does not play a role in integrating the one member 71 and the retention device 11, but rather serves solely to align the pilot hole 74 and the body 14 concentrically. Typically, a drill is used to create the pilot hole 74, so the bottom of the pilot hole 74 is conical, and the leading screw 18 is naturally guided to the center of the pilot hole 74, aligning the pilot hole 74 and the body 14 concentrically. The adhesive is evenly filled on the circumferential surface of the body 14, and the retention device 11 is securely integrated with the one member 71.

[0025] The embedding tool 21 is a simple round bar, and has a male thread 25 formed on its side circumferential surface and a hexagonal groove 26 for hanging a tool on one end surface. The embedding tool 21 has the same diameter as the body 14 of the detention device 11, and the pitch of both male threads 15, 25 is also the same. A through hole 84 is machined on the side surface of the counterpart member 81 in order to embed the embedding tool 21. The through hole 84 passes through both side surfaces of the counterpart member 81, and at the end of the through hole 84 facing the one member 71, a tenon groove 83 with an enlarged inner diameter is machined in order to fit the connector 31. Furthermore, a storage groove 86 with an enlarged inner diameter is machined on the opposite side of the through hole 84. In addition, naturally, the pilot hole 74 of the one member 71 and the through hole 84 of the counterpart member 81 are machined to be concentric, and the tenon grooves 73, 83 of both are also aligned to the same diameter.

[0026] The connector 31 has a round rod shape with a restricted length, and is fitted into a space defined by the tenon grooves 73, 83 on the contact surface between the one member 71 and the counterpart member 81. Therefore, the connector 31 is disposed so as to straddle the contact surface between the one member 71 and the counterpart member 81, and can transmit a downward load acting on the one member 71 to the counterpart member 81. Naturally, the tenon grooves 73, 83 are sized so that the connector 31 can be fitted in without loosening. In addition, a female thread 35 is formed inside the connector 31. This female thread 35 penetrates both end faces of the connector 31, and the male thread 15 of the detention device 11 is threadedly engaged with one end face, and the male thread 25 of the embedding device 21 is threadedly engaged with the other end face. As a result, the detention device 11 and the embedding device 21 are connected via the connector 31. In consideration of the rotation of the connector 31, four claw holes 36 for hooking tools are formed on the end face of the connector 31.

[0027] The restraining device 41 is disposed on the side surface of the counterpart member 81 opposite to the one member 71 in order to restrict displacement of the embedding device 21. The restraining device 41 is in the shape of a round bar like the connecting device 31, and has an internal thread 45 into which the male thread 25 of the embedding device 21 is threadedly engaged. In addition, a pawl hole 46 is formed in the end face of the restraining device 41. Furthermore, at both ends of the through hole 84, opposite the tenon groove 83, a storage groove 86 into which the restraining device 41 is fitted is machined. However, the thickness of the restraining device 41 is reduced compared to the connecting device 31, and the entire restraining device 41 is fitted into the storage groove 86. When the restraining device 41 is threadedly engaged with the end of the embedding device 21 (the end on the left side in the figure), displacement of the embedding device 21 toward the one member 71 is restricted, and when the restraining device 41 is further tightened, the one member 71 can be drawn to the counterpart member 81 via the connecting device 31 and the retaining device 11. In this figure, two sets of the indwelling device 11, the embedding device 21, the connecting device 31 and the restraining device 41 are arranged one above the other to ensure the necessary strength.

[0028] 2 shows the process of connecting one member 71 and the counterpart member 81 in FIG. 1. The upper part of the figure illustrates the process up to fitting connector 31 into one member 71, and the lower part of the figure illustrates the state in which one member 71 and counterpart member 81 are in contact. Prior to connecting one member 71 and counterpart member 81, it is necessary to embed retention device 11 in one member 71. In this case, adhesive is first applied to retention device 11 and pilot hole 74, and then retention device 11 is embedded in pilot hole 74. When leading screw 18 contacts the bottom of pilot hole 74, a tool is applied to hexagonal groove 16 to rotate retention device 11, and leading screw 18 is driven into one member 71 from the bottom of pilot hole 74. Then, as shown in the upper left of the figure, when the end faces of one member 71 and retention device 11 are aligned, embedding of retention device 11 is complete.

[0029] Next, the connector 31 is fitted into the tenon groove 73 of the one member 71. A tool is placed on the tab hole 36 of the connector 31 and rotated to thread the male thread 15 of the detention device 11 and the female thread 35 of the connector 31. Finally, approximately half of the connector 31 is fitted into the tenon groove 73, as shown in the upper right of the figure. Therefore, approximately half of the connector 31 protrudes from the end face of the one member 71. The connector 31 is fitted into the tenon groove 73 without loosening, allowing it to transmit shear loads. Furthermore, because the end of the detention device 11 is restrained by the connector 31 so that it cannot be displaced, the body 14 of the detention device 11 is inevitably aligned concentrically with the pilot hole 74. In this way, the detention device 11 is restrained by the leading screw 18 and the connector 31 so that both ends are aligned concentrically with the pilot hole 74, allowing the adhesive to be filled without unevenness.

[0030] The connector 31 is fitted into one member 71, and after the adhesive has solidified, the end face of the one member 71 is brought close to the side face of the counterpart member 81, and the connector 31 protruding from the one member 71 is fitted into the tenon groove 83 of the counterpart member 81, and the end face of the one member 71 is brought into contact with the side face of the counterpart member 81, as shown in the lower part of the figure. At this time, the one member 71 is supported by the counterpart member 81 by the connector 31. Next, the embedding device 21 is embedded in the through-hole 84 exposed in the side face of the counterpart member 81, and its end face is brought into contact with the connector 31. After that, a tool is applied to the hexagonal groove 26 to rotate the embedding device 21, and the male thread 25 is screwed into the female thread 35 of the connector 31. In this way, the embedding device 21 is connected to the detention device 11 via the connector 31. When the embedding tool 21 is screwed into the connecting tool 31, the end on the opposite side enters the storage groove 86 of the counterpart member 81, and when the restraining tool 41 is screwed therein and tightened, the one member 71 is drawn to the counterpart member 81 via the retaining tool 11.

[0031] 3 shows the state in which one member 71 and the counterpart member 81 are connected after the state in FIG. 2, and a longitudinal cross section thereof is depicted at the bottom of the figure. By tightening the restraining device 41, the embedding device 21 is pulled to the left side of the figure, and the connecting device 31 and the retaining device 11 are also pulled along with it, so that the end face of the one member 71 comes into close contact with the side face of the counterpart member 81. At this time, the restraining device 41 is fitted into the storage groove 86 of the counterpart member 81, and most of the parts are embedded in the one member 71 and the counterpart member 81. Note that with the connection structure shown in this figure, when processing the one member 71, the embedding of the retaining device 11 and the fitting of the connecting device 31 can be performed all at once; at the site, after the connecting device 31 is fitted into the counterpart member 81, the embedding device 21 is embedded in the counterpart member 81 and the restraining device 41 is tightened.

[0032] As shown in the longitudinal cross section, both ends of the detention device 11 are restrained so as not to be displaced by the leading screw 18 and the connecting device 31, and the entire detention device 11 is necessarily aligned concentrically with the pilot hole 74, so that the adhesive is filled evenly and sufficient strength can be ensured, and the detention device 11, connecting device 31, and embedding device 21 are reliably aligned concentrically. Note that adhesive is not required for the embedding device 21 that is embedded in the counterpart material 81. Therefore, a gap is ensured on the side circumferential surface of the embedding device 21. Furthermore, the detention device 11 and the embedding device 21 are in contact inside the connecting device 31, and the detention device 11 and the embedding device 21 are connected without loosening.

[0033] FIG. 4 shows the same connecting structure as FIG. 1 , but the head 28 of the embedding tool 22 has been replaced with an integrated one. The upper part of the figure shows the state immediately before one member 71 and the counterpart member 81 are brought into contact, and the lower part shows the state after connection. In this figure, the same detention device 11 as in FIG. 1 is embedded in the one member 71, and the same connector 31 as in FIG. 1 is fitted into the one member 71. The same through-hole 84, tenon groove 83, and storage groove 86 as in FIG. 1 are also machined into the counterpart member 81. However, for the embedding tool 22, a "hexagonal bolt" is used, with a shaft protruding from the hexagonal head 28 and having a male thread 25 formed therein. The male thread 25 is embedded in the through-hole 84 and screwed into the female thread 35 of the connector 31. When the embedding tool 22 is tightened, the one member 71 is drawn to the counterpart member 81, and the head 28 of the embedding tool 22 is accommodated in the storage groove 86.

[0034] FIG. 5 shows a T-shaped connection structure in which one member 71 and an opposing member 91 are arranged to face each other, with the side surface of the counterpart member 81 sandwiched between them. The opposing member 91 is made of wood having the same cross section as the one member 71 and is arranged at the same height as the one member 71. The connection structure between the one member 71 and the counterpart member 81 is the same as that shown in FIG. 1 , with a retention device 11 embedded in the one member 71 and the two members being integrated with an adhesive. In addition, a connector 31 is fitted into the end face of the one member 71, and a round-bar-shaped embedding device 21 is embedded in the counterpart member 81. However, in this figure, connectors 31 are arranged on both side surfaces of the counterpart member 81, and the connector 31 on the opposing member 91 side is fitted into a storage groove 86 of the counterpart member 81 and is screwed into the end of the embedding device 21. As a result, by tightening this connector 31, the one member 71 can be drawn to the counterpart member 81.

[0035] A fixing device 51 is embedded in the counter member 91, and the two are integrated with an adhesive. Like the embedding device 21, the fixing device 51 is a simple round bar, with a male thread 55 formed on its side circumferential surface and a hexagonal groove 56 formed on one end surface for hanging a tool. The fixing device 51 has the same diameter as the body 14 of the detention device 11 and the embedding device 21, and the pitches of the male threads 15, 25, and 55 are all the same. A pilot hole 94 is formed in the end surface of the counter member 91 in order to embed the fixing device 51, and at the entrance of the pilot hole 94, a storage groove 96 with an enlarged inner diameter is formed to fit the connector 31. When the connector 31 is fitted into the storage groove 86 of the counter member 81, roughly half of it protrudes from the side surface of the counter member 81, and this protrudes into the storage groove 96 of the counter member 91. Furthermore, the male thread 55 of the fixing tool 51 is screwed into the female thread 35 of the connecting tool 31 to connect the embedding tool 21 and the fixing tool 51 together.

[0036] 6 shows the process of connecting the opposing member 91 of FIG. 5 to the counterpart member 81. As in FIG. 2, a holding device 11 is embedded in one member 71, a connector 31 is fitted into the contact surface between the one member 71 and the counterpart member 81, and an embedding device 21 is embedded in the side surface of the counterpart member 81. As shown in the upper part of the figure, the holding device 11 and the embedding device 21 are connected via the connector 31. At this time, the end of the embedding device 21 (the end on the opposing member 91 side) is housed in the storage groove 86 of the counterpart member 81, and a new connector 31 is brought close to this end, and its female thread 35 is screwed into the male thread 25 of the embedding device 21, so that approximately half of the connector 31 is fitted into the storage groove 86 and the remainder protrudes from the side surface of the counterpart member 81. In this way, the one member 71 and the counterpart member 81 are connected to each other.

[0037] Thereafter, as shown in the lower part of the figure, when the fixing device 51 is screwed onto the connecting device 31 fitted into the storage groove 86 and the end face of the fixing device 51 is brought into contact with the embedding device 21, the concentrically aligned detention device 11, embedding device 21, and fixing device 51 are connected via the two connecting devices 31, and furthermore, the fixing device 51 protrudes from the side surface of the counterpart member 81. Next, adhesive is applied to the side peripheral surface of the fixing device 51 and the pilot hole 94 of the opposing member 91, and then the fixing device 51 is embedded in the pilot hole 94 of the opposing member 91, and at the same time the connecting device 31 is fitted into the storage groove 96.

[0038] 7 shows the state in which one member 71, the counterpart member 81, and the opposing member 91 are connected in a T-shape, following the state in FIG. 6, and a longitudinal cross section is depicted at the bottom of the figure. The detention device 11, the embedding device 21, and the fixing device 51 are connected via the connecting device 31, and the opposing member 91 is integrated with the fixing device 51 by adhesive, and the opposing member 81 and the opposing member 91 are connected via the fixing device 51. Note that the connecting device 31 is fitted into the end face of the opposing member 91, so that the fixing device 51 is reliably aligned concentrically with the pilot hole 94 of the opposing member 91 and is uniformly filled with adhesive. Therefore, both the one member 71 and the opposing member 91 are reliably connected to the opposing member 81. [Explanation of symbols]

[0039] 11 Detention Device 14 Torso 15 Male screw 16 hexagonal groove 18 Leading Screw 21 Burying equipment 22 Burying equipment 25 male screw 26 hexagonal groove 28 head 31 Connectors 35 Female thread 36 Claw holes 41 Restraints 45 female thread 46 Claw holes 51 Fixtures 55 Male screw 56 Hexagonal groove 71 One side material 73 Mortise groove 74 pilot hole 81 Other material 83 Mortise groove 84 through holes 86 Storage Groove 91 Opposing material 94 pilot hole 96 Storage Groove

Claims

[Claim 1] A connecting structure between one member (71) and a counterpart member (81), in which the one member (71) is in contact with a side surface of the counterpart member (81), a pilot hole (74) is provided on the one member (71) side, starting from the contact surface between the one member (71) and the counterpart member (81), and a through hole (84) is provided on the counterpart member (81) side, the pilot hole (74) and the through hole (84) being aligned concentrically, A rod-shaped retaining device (11) is embedded in the pilot hole (74), and the retaining device (11) is integrated with the one member (71) by an adhesive. A leading screw (18) is formed on the tip side of the retaining device (11), and the leading screw (18) is inserted into the bottom of the pilot hole (74). A rod-shaped embedding device (21 or 22) is embedded in the through hole (84), and male threads (15, 25) are formed on both the retaining device (11) and the embedding device (21 or 22). A tenon groove (73) with an enlarged inner diameter is provided at the entrance of the pilot hole (74), and a tenon groove (83) is also provided in the through hole (84) so ​​as to face this. A connector (31) is fitted into the space formed by both tenon grooves (73, 83). A female screw (35) is formed on the inner peripheral surface of the connector (31), and the male screws (15, 25) of both the detention device (11) and the embedding device (21 or 22) are screwed into the female screw (35), thereby connecting the detention device (11) and the embedding device (21 or 22). A connecting structure characterized in that, on the side of the counterpart member (81) opposite the mortise groove (83), the embedding tool (21 or 22) is restrained from displacing toward the one member (71), and the one member (71) is drawn to the counterpart member (81) by the embedding tool (21 or 22).

Images