JP6718776B2 - Connector - Google Patents

Description

The present invention relates to a rod-shaped connecting tool embedded in a member for integrating adjacent members in various tree structures.

In various wooden structures such as wooden construction, there are various methods for integrating adjacent members, but in recent years, rod-shaped metal pieces are often used from the viewpoint of strength and cost. This rod-shaped metal piece is called a hoso pipe or a hoso shaft, and after it is embedded so as to penetrate the boundary between members, when a drift pin or the like is driven from the surface of the member, the members are integrated via this metal object. .. Various technical developments have been made on such metal objects, and those having a function of absorbing shock, such as the patent documents described later, have also been disclosed.

Patent Document 1 discloses a metal joint that makes it difficult for wood to crack even when a load is applied in the direction in which the joined woods are separated from each other. This metal fitting is pipe-shaped and is embedded so as to penetrate adjacent timbers such as bases and pillars, and then pins are driven from the surface of each wood toward the metal fittings to integrate the timbers through the metal fittings. Turn into. Further, a deformation hole is provided near the middle of the joined metal object to intentionally reduce the strength of the joined metal object. This deformation hole is located near the boundary between timbers, and when an excessive tensile load is applied to the joined timbers, a large elasto-plastic deformation occurs around the deformation hole, the shock is absorbed, and the wood cracks. prevent.

The following Patent Document 2 discloses a hoso pipe that connects members to each other. Like the above-mentioned Patent Document 1, this hoso pipe is embedded so as to penetrate adjacent members, and then a drift pin or the like is driven from the surface of each member toward the hoso pipe to integrate the members via the hoso pipe. To do. Furthermore, an extension is provided near the middle of the hoso pipe to facilitate elastic-plastic deformation. The expansion part is an expansion of the entire circumference of the hoso pipe in the radial direction, and this part functions like a spring and absorbs impact. As a matter of course, the expansion portion is arranged near the boundary between two adjacent members.

JP, 2011-226175, A JP 2012-52382A

The joining hardware disclosed in Patent Document 1 and the hozo pipe disclosed in Patent Document 2 make it difficult to produce a wide variety of products in a small amount due to its unique structure, and supply products with optimal shapes according to individual requirements at a low price. It is also difficult to do. Therefore, the technologies disclosed in both documents are limited to widespread use, such as when mass production can be expected. However, the function of absorbing shock is extremely effective as a countermeasure against earthquakes, and there is a long-awaited demand for a new connecting tool that has evolved the technologies described in both patent documents and has overcome the problems of versatility and cost.

The present invention was developed based on such circumstances, and an object of the present invention is to provide a rod-shaped connector having a function of absorbing shock, low cost and excellent in versatility.

The invention according to claim 1 for solving the above-mentioned problems is a connector used to integrate a plurality of members, and a plurality of connectors are embedded in a prepared hole provided in each of the members and arranged on a coaxial line. Of the short shaft rod, a buffer shaft connecting the adjacent short shaft rods, and a nut screwed to the buffer shaft, the short shaft rod is integrated with the member , the buffer shaft, A material that is more likely to cause elastic-plastic deformation than the short shaft rod is used, and it is arranged so as to straddle the boundary between the adjacent members, and the buffer shaft has a smaller diameter than the short shaft rod and male threads at both ends thereof. Is provided, the nut is arranged near the root of each of the male screws, and a female screw is provided on the end face of the short shaft rod. By screwing the male screw and the female screw, the buffer shaft is provided. the via, Ri integrated all the minor axis rod a plurality of aligned coaxially tare, is possible to adjust the distance between adjacent short-axis rod by changing the screwing length between the male screw and the female screw The connector is characterized in that the nut can be prevented from loosening by closely contacting the nut with the end surface of the short shaft rod .

The connector according to the present invention does not consist of a single metal rod as in the prior art, and is characterized in that a plurality of short shaft rods are integrated by a buffer shaft. Therefore, all the short rods are aligned on the coaxial line. In principle, one short rod is assigned to each member to be connected, but when a large number of members are stacked, one short rod may penetrate multiple members together. is there. In addition, in the case where two adjacent members are connected to each other in a T shape or an L shape, the number of short shaft rods is two, one short shaft rod is embedded in each member, and the two short shaft rods are used as buffer shafts. Integrate with. However, depending on the conditions, a plurality of sets of connecting tools may be arranged in one connecting structure.

The member in which the short shaft rod is embedded is premised on various kinds of wood, and the pilot hole is previously processed in the member in order to embed the short shaft rod. The short rod must be integrated with the member by some means to prevent it from coming off the member. A specific example thereof is a method of inserting a drift pin or a bolt so as to penetrate the member and the short rod. Other specific examples include a method of using a lag screw or a deformed steel bar as a short rod. When the lag screw is used, the ridge protruding from the side peripheral surface bites into the member and the lag screw is fixed. When a deformed steel bar is used, it is fixed to the member with an adhesive.

The shock-absorbing shaft must have a smaller diameter than the short shaft rod, and must undergo elastic-plastic deformation when a tensile load is applied to absorb the shock. However, if a large amount of deformation occurs under daily load, the rigidity of the building will be reduced. Therefore, the strength should be adjusted so that it will function effectively only when an unexpectedly large load is applied due to an earthquake. The buffer shaft has a diameter smaller than that of the short shaft rod, and the stress is inevitably increased, so that the buffer shaft is easily deformed.

As a specific example of the material of the short shaft rod, there is carbon steel wire for cold heading (SWCH), which is unlikely to undergo elasto-plastic deformation even when a tensile load is applied. As for the buffer shaft, rolled steel bars for building structure (SNR) can be mentioned. Rolled steel bars for building structures are excellent in toughness, easily absorb impact load, and easily generate plastic deformation without breaking even if they are overloaded. Moreover, these materials have no major problems in acquisition and processing, and conventional manufacturing techniques can be applied.

A male screw is formed at both ends of the shock-absorbing shaft, and a female screw is formed on the end face of the short shaft rod so as to be screwed with this male screw. Integrate the shaft rod. Actually, in order to prevent the loosening of the male screw and the female screw, a nut is screwed onto the male screw and the nut is brought into close contact with the end face of the short rod to increase the friction between the male screw and the female screw. Of course, this nut should not be projected from the side peripheral surface of the short rod.

In this way, by using a connecting tool that integrates a plurality of short shaft rods with a shock absorbing shaft, even if an excessive tensile load is applied between the members, the shock absorbing is absorbed by the elastic deformation of the shock absorbing shaft. , Prevents damage to parts. Moreover, in the present invention, it is easy to appropriately select a short shaft rod or a buffer shaft, and to manufacture an optimally shaped connecting tool each time according to the construction site, and in addition, by changing the screwing length of the male screw and the female screw. Also, it is possible to make fine adjustments to the embedding position of the short shaft rod, and it is extremely versatile and can be used in all connection structures.

As in the invention according to claim 1, by using a connecting tool in which a plurality of short shaft rods are integrated with a buffer shaft, the short shaft rod and the buffer shaft are appropriately combined, and the configuration and the total length of the connecting tool can be freely set. Can be adjusted. Therefore, the product of the present invention is extremely versatile, does not need to manufacture a short shaft rod or a buffer shaft each time, has only a limited type of inventory, and can be applied to any connection structure, which is also advantageous in terms of cost. .. Further, even if an excessive tensile load is applied between the connected members by the buffer shaft, the shock is absorbed to prevent the members from being damaged, and a wooden construction excellent in safety can be provided at low cost.

FIG. 3 is a perspective view showing an example of the shape of the connector according to the present invention and an example of its use, in which the column and the horizontal member are integrated into a T shape by using the connector. 1 is a perspective view and a vertical sectional view showing a state in which the two members of FIG. 1 are integrated in a T-shape, the upper end surface of the column and the lower surface of the horizontal member are in contact with each other. FIG. 1 is a vertical cross-sectional view showing a case where an excessive load acts in a direction of separating the two members of FIG. 1 after the two members are integrated, and a state in which a buffer shaft is stretched is drawn above the drawing. At the bottom, it is depicted as it has been pushed back. In a perspective view showing a connecting tool composed of three short shaft rods and a usage state thereof, pillars are arranged so as to sandwich a horizontal member, and these are integrated in a cross shape. It is a perspective view which shows the state which integrated the three members of FIG. 4 in the shape of a cross, and the shape of the connection tool used here. A perspective view showing a case where a lag screw is used for one of the two short shaft rods constituting the connector and the end face of the horizontal member is brought into contact with the side face of the column to integrate them into an L shape. Is. FIG. 7 is a perspective view showing a process of integrating the two members of FIG. 6 into an L shape, and at the time of construction, first, only the lag screw is embedded in the column. FIG. 7 is a perspective view showing a form in which a part of FIG. 6 is changed, and a deformed steel bar is used as a short rod embedded in a horizontal member.

FIG. 1 shows an example of the shape of a connector according to the present invention and an example of its use. This connecting tool has a shape in which two short shaft rods 11 and 12 arranged on a coaxial line are integrated by a buffer shaft 21, and a member 31 corresponding to a pillar and a member 41 corresponding to a horizontal member are formed into a T shape. Used to integrate. The two short shaft rods 11 and 12 have a structure in which a drift pin 29 or the like is inserted into the side peripheral surface thereof and are integrated with the members 31 and 41. The shaft rod 11 is embedded in the member 31, the upper short shaft rod 12 is embedded in the member 41, and the upper and lower short shaft rods 11 and 12 are integrated by the buffer shaft 21. Therefore, male threads 22 are formed at both ends of the buffer shaft 21 except the center. On the upper end surface of the lower short shaft rod 11 and the lower end surface of the upper short shaft rod 12, a female screw 18 to be screwed with the male screw 22 is formed. Further, a nut 23 is used to prevent the male screw 22 and the female screw 18 from loosening.

A pilot hole 35 is formed in the center of the upper end surface of the member 31 corresponding to the pillar in order to embed the short shaft rod 11. The prepared hole 35 has a bottom and is finished to have an inner diameter into which the short shaft rod 11 can be fitted without loosening. Further, in order to integrate the embedded short shaft rod 11 with the member 31, the drift pin 29 is driven from the side surface of the member 31 toward the short shaft rod 11. Therefore, a pin hole 39 is formed on the side surface of the member 31 so as to intersect with the pilot hole 35 and exit to the opposite surface, and a side hole 19 is formed on the side peripheral surface of the short rod 11. As a matter of course, the pin hole 39 and the side hole 19 are designed so as to be aligned concentrically. Regarding the member 31, pin holes 39 are formed on both of the two side surfaces orthogonal to each other, and the drift pin 29 is driven in a cross shape when viewed from directly above.

As for the member 41 corresponding to the horizontal member, a pilot hole 45 is processed so as to penetrate the upper and lower surfaces of the member 41 in order to embed the short rod 12. Further, the pin holes 49 for driving the drift pins 29 are arranged in parallel in the upper and lower three rows. As described above, the arrangement of the pin holes 39 and 49 varies depending on the members 31 and 41, but in the present invention, by appropriately selecting the short rods 11 and 12, the flexibility of the arrangement of the pin holes 39 and 49 is high. , Excellent in convenience.

At the time of construction, first, the buffer shaft 21 and the nut 23 are used to firmly integrate the two short shaft rods 11 and 12, and the holes 31, 45 and the pin holes 39, 49 are formed in the members 31, 41. .. Next, the short shaft rod 11 is embedded in the lower hole 35 of the lower member 31, the pin hole 39 and the side hole 19 are aligned concentrically, the drift pin 29 is driven from the pin hole 39 toward the side hole 19, and the short shaft The rod 11 is integrated with the member 31. Then, when the upper end of the short shaft rod 12 is inserted into the prepared hole 45 of the member 41 and the upper and lower members 31 and 41 contact each other, the side hole 19 and the pin hole 49 are aligned concentrically. Therefore, when the drift pin 29 is driven from the pin hole 49 toward the side hole 19, the upper and lower members 31, 41 are integrated with each other via the connecting tool. Note that, conversely to this procedure, after the short shaft rod 12 is embedded in the member 41, the short shaft rod 11 may be embedded in the member 31.

FIG. 2 shows a state in which the two members 31 and 41 of FIG. 1 are integrated in a T-shape, and the upper end surface of the member 31 corresponding to a pillar and the lower surface of the member 41 corresponding to a horizontal member are in contact with each other. .. Further, the short shaft rod 11 is embedded in the prepared hole 35 of the member 31, the short shaft rod 12 is embedded in the prepared hole 45 of the member 41, and the two short shaft rods 11 and 12 lined up and down by the buffer shaft 21. It is integrated. Therefore, the buffer shaft 21 independently receives the load acting in the direction of separating the two members 31, 41 from each other. As described above, the buffer shaft 21 is extremely important for ensuring the rigidity of the connecting structure, and the material, diameter, and length of the buffer shaft 21 must be determined in consideration of various conditions.

The upper and lower short shaft rods 11 and 12 are integrated by the buffer shaft 21, but by adjusting the screwing length of the male screw 22 and the female screw 18, the distance between the adjacent short shaft rods 11 and 12 is reduced. It is also easy to adjust. Therefore, even if the side holes 19 are formed in the short shaft rods 11 and 12 in advance, the positions of the pin holes 39 and 49 to be machined in the members 31 and 41 can be flexibly determined, which is excellent in convenience during construction. .. In addition, the drift pin 29 is held by friction with the members 31 and 41, and does not drop off accidentally.

FIG. 3 shows a case in which, after the two members 31, 41 of FIG. 1 are integrated, an excessive load acts in the direction of separating the two members 31, 41. In the “stretched state” in the upper part of FIG. 3, the buffer shaft 21 is stretched by the load, and a gap is formed at the boundary between the two members 31 and 41. As described above, the shock is absorbed by stretching the buffer shaft 21, and it is possible to prevent the members 31 and 41 from being damaged. Even when the buffer shaft 21 is stretched, if it is within the elastic deformation range, the buffer shaft 21 is promptly restored to the original state.

An excessive load may act in the direction of separating the two members 31 and 41, and the buffer shaft 21 may be plastically deformed. In that case, a gap remains at the boundary between the two members 31 and 41. However, when a load is applied in the direction of bringing the two members 31 and 41 closer to each other due to gravity or the like, the “pushed back state” in the lower part of FIG. Thus, the buffer shaft 21 bends, the gap between the two members 31, 41 decreases, and the state close to the initial state can be maintained. If a rolled steel bar for building structure (SNR) is used as the material of the buffer shaft 21, it is less likely to break due to its characteristics, and the connection between the two members 31 and 41 can be maintained even though plastic deformation is repeated.

FIG. 4 shows a connecting tool composed of three short shaft rods 11, 12, and 13 and a usage state thereof. There are various arrangements of the members that form the skeleton of the wooden construction. As shown in this figure, the other members 31 and 51 are arranged so as to sandwich the member 41 corresponding to the horizontal member, and these are integrated in a cross shape. Sometimes. The connecting tool used here corresponds to the three members 31, 41 and 51, and has three short shaft rods 11, 13 and 12, and the two connecting shafts 21 connect between them.

The connector includes a short rod 11 embedded in a member 31 corresponding to a lower column, a short rod 13 embedded in a member 41 corresponding to a horizontal member, and a short rod 12 embedded in a member 51 corresponding to an upper column. In addition, it is composed of a total of two shock-absorbing shafts 21 that connect them, and nuts 23 for locking are screwed to both ends of each shock-absorbing shaft 21. Therefore, the central short shaft rod 13 is formed with female screws 18 at two upper and lower positions.

With respect to the two members 31 and 51 corresponding to the pillars, pin holes 39 and 59 are formed on the two side surfaces orthogonal to each other, and the side holes 19 of the short rods 11 and 12 are also formed in two directions. However, with respect to the member 41 corresponding to the horizontal member, two rows of pin holes 49 aligned in parallel are machined up and down, and the side hole 19 of the short rod 13 is also formed in two rows in parallel. As described above, according to the present invention, various connecting structures can be dealt with by combining various short shaft rods 11, 12, and 13.

FIG. 5 shows a state in which the three members 31, 41, 51 of FIG. 4 are integrated in a cross shape, and the upper end surface of the member 31 corresponding to the lower column contacts the lower surface of the member 41 corresponding to the horizontal member. However, the lower end surface of the member 51 corresponding to the upper column is in contact with the upper surface of the member 41. Further, the short shaft rods 11, 13, 12 are embedded in the prepared holes 35, 45, 55 of the respective members 31, 41, 51, and the buffer shafts 21 connect them. Therefore, when a load acts in the direction in which the upper and lower members 31, 51 are separated, the buffer shaft 21 receives this and absorbs the shock by its elasto-plastic deformation, preventing damage to the members 31, 41, 51.

In FIG. 6, a lag screw is used for one of the two short shaft rods 14 and 15 constituting the connecting tool, and the end face of one member (horizontal member) 41 is connected to the other member (pillar) 31. The case where they are brought into contact with the side surfaces and integrated into an L shape is shown. The short rod 15 in this figure is a lag screw diverted as it is, and a convex strip 25 extending spirally is formed on the side peripheral surface of the short shaft rod 15. By biting this into the inner peripheral surface of the prepared hole 35, The short rod 15 is integrated with the member 31. Further, a hexagonal head portion 26 is provided on one end surface of the short shaft rod 15 for mounting a tool at the time of embedding, and a female screw 18 is formed at the center thereof so that the buffer shaft 21 can be screwed. it can.

Next, the short shaft rod 14 to be embedded in the member 41 corresponding to the horizontal member is a simple columnar shape, and the drift pin 29 is inserted into the side hole 19 to fix the short shaft rod 14 to the member 41. In addition, a female screw 18 is formed on one end surface of the short shaft rod 14 so as to be screwed with the buffer shaft 21, and when the left and right short shaft rods 14 and 15 are integrated via the buffer shaft 21 and the nut 23, A set of connectors is completed. In addition, in this figure, in order to oppose the bending moment acting on the member 41, two sets of connecting tools are arranged vertically. Therefore, the prepared holes 35 and 45 are also processed into two rows, upper and lower.

FIG. 7 shows a process of integrating the two members 31 and 41 of FIG. 6 into an L shape, and at the time of construction, first, only the short shaft rod (lag screw) 15 is embedded in the member (pillar) 31. When the short shaft rod 15 is embedded in the member 31, it is necessary to rotate the head portion 26 with a tool. Therefore, the work of incorporating other components such as the buffer shaft 21 is performed after the short shaft rod 15 is completely embedded. When the left and right short shaft rods 14 and 15 are integrated via the buffer shaft 21 and the nut 23, the short shaft rod 14 and the like project from the side surface of the member 31, as illustrated in the upper part of FIG. 7. Then, the short rod 14 is inserted into the prepared hole 45 of the member 41, the members 31, 41 are brought into contact with each other, and the drift pin 29 is driven in from the side surface of the member 41, whereby the connecting work is completed.

FIG. 8 shows a modified form of FIG. 6, in which a deformed steel bar is used as the short shaft rod 16 to be embedded in the member (horizontal bridge member) 41. The deformed steel bar has ribs 27 regularly formed on its side peripheral surface, and the adhesive 28 is applied to the entire area of the side peripheral surface and embedded in the prepared hole 45, whereby the deformed steel bar is integrated with the member 41. .. Further, at the time of construction, first, only the short shaft rod (lag screw) 15 is embedded in the member (pillar) 31, the left and right short shaft rods 15 and 16 are integrated through the buffer shaft 21 and the nut 23, and from the side surface of the member 31. The short rod 16 is projected. Next, the adhesive 28 is applied to the side peripheral surface of the short shaft rod 16, the adhesive 28 is inserted into the prepared hole 45 of the member 41, the members 31 and 41 are brought into contact with each other, and the adhesive 28 is dried. ..

As shown in each figure so far, if the short rod can be fixed in the pilot hole of the member, various rod-shaped metals such as lag screw and deformed steel bar can be used. It is supposed to be possible, but you can freely decide.

11 Short shaft rod (female screw on the upper surface of the figure)
12 Short shaft rod (female screw on the lower end of the figure)
13 Short shaft rod (female threads on both ends)
14 Short shaft rod (female screw on one end face, side holes in two rows in the same direction)
15 Short shaft rod (lag screw)
16 Short shaft rod (deformed steel bar)
18 female screw 19 side hole 21 buffer shaft 22 male screw 23 nut 25 ridge 26 head 27 rib 28 adhesive 29 drift pin 31 member (pillar)
35 Pilot hole 39 Pin hole 41 Member (horizontal bridge material)
45 Pilot hole 49 Pin hole 51 Member (column)
55 Prepared hole 59 Pin hole

Claims (1)

A connector used for integrating a plurality of members (31, 41, 51),
A plurality of short shaft rods (11 to 16) embedded in prepared holes (35, 45, 55) provided in the individual members (31, 41, 51) and arranged on the coaxial line;
A buffer shaft (21) connecting the adjacent short shaft rods (11 to 16) to each other, and a nut (23) screwed to the buffer shaft (21),
Consists of
The short rods (11 to 16) are integrated with the members (31, 41, 51) ,
The buffer shaft (21) is made of a material that is more likely to undergo elastic-plastic deformation than the short shaft rods (11 to 16), and is arranged so as to straddle the boundary between the adjacent members (31, 41, 51),
The buffer shaft (21) has a diameter smaller than that of the short shaft rods (11 to 16), and male threads (22) are provided at both ends thereof, and the nuts are provided near the roots of the male threads (22). (23) is placed,
A female screw (18) is provided on the end surface of the short rod (11 to 16),
By screwing of the male screw (22) and said female screw (18), said via a buffer shaft (21), Ri integrating all the minor axis rod a plurality of aligned coaxially (11 to 16) Thea, By changing the screwing length of the male screw (22) and the female screw (18), the interval between the adjacent short shaft rods (11 to 16) can be adjusted, and the nut (23) can be shortened. A connector which is capable of preventing looseness between the short shaft rod (11 to 16) and the buffer shaft (21) by closely contacting the end face of the shaft rod (11 to 16) .

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