JP2018035642A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rod-form connector having a function to absorb an impact, is low in a cost and highly versatile.SOLUTION: A connector for integrating members 31, 41 with each other comprises short rods 11, 12 and a buffer shaft 21. The short rods 11, 12 are embedded in prepared holes 35, 45 formed on each of the members 31, 41, and a plurality of the short rods lines up on a same axial line. Furthermore, the short rods 11, 12 are integrated with the members 31, 41 in which the short rods are embedded, using a drift pin 29 and the like. The buffer shaft 21 connects the adjacent short rods 11, 12 with each other, uses a material that undergoes elastoplastic deformation more easily than the short rods 11, 12, and is disposed over a boundary between the adjacent members 31, 41. A male screw 22 is provided on both ends of the buffer shaft 21, while a female screw 18 is provided on an edge surface of the short rods 11, 12. The male and female screws are screwed to integrate the short rods 11, 12 through the buffer shaft 21. The buffer shaft 21 absorbs an impact and the short rods 11, 12 may be selected at will, making the connector highly versatile while keeping a cost low.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rod-like connector embedded in members in order to integrate 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 hardware is often used from the viewpoint of strength and cost. This rod-shaped hardware is called a hozo pipe, hozo shaft, etc. After being 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 through this hardware . For such hardware, various technical developments are in progress, and those having a function of absorbing an impact are disclosed as in both patent documents described below.

  In patent document 1, even when a load acts in a direction in which the joined woods are separated from each other, a joint hardware that makes it difficult to cause cracking of the wood is disclosed. The joint hardware is in the form of a pipe, and after embedding adjacent wood such as the base and pillar, a pin is driven from the surface of each wood toward the joint hardware, and the wood is integrated through the joint hardware. Turn into. Further, a deformation hole is provided in the vicinity of the middle of the metal joint, and the strength of the metal joint is intentionally reduced. This deformation hole is located near the boundary between the woods, and when an excessive tensile load is applied to the joined wood, a large elasto-plastic deformation occurs around the deformation hole, the impact is absorbed, and the wood cracks. prevent.

  In the following Patent Document 2, a hozo pipe that connects members is disclosed. This hozo-pipe is embedded so as to penetrate through adjacent members as in the above-mentioned Patent Document 1, and then a drift pin or the like is driven from the surface of each member toward the hozo-pipe, and the members are integrated via the hozo-pipe. To do. In addition, an extension is provided near the middle of the hozo pipe to make it easy to cause elasto-plastic deformation. The expansion part is a part in which the entire circumference of the hozo pipe is expanded in the radial direction, and this part functions like a spring and absorbs an impact. As a matter of course, the extended portion is disposed near the boundary between two adjacent members.

JP 2011-226175 A JP 2012-52382 A

  The joint hardware disclosed in Patent Document 1 and the hozo pipe disclosed in Patent Document 2 are difficult to produce in a wide variety of products because of their unique structure, and supply products with optimal shapes according to individual requirements at a low price. It is also difficult to do. For this reason, the techniques disclosed in both documents are only popularized under limited conditions, such as when mass production is expected. However, the ability to absorb shocks is extremely effective as a countermeasure against earthquakes, and there is a need for a new connector that has further evolved the technology as described in both patent documents and has overcome problems such as versatility and cost.

  The present invention has been developed on the basis of such circumstances, and has an object to provide a rod-like coupler having a function of absorbing an impact, low cost and excellent versatility.

  The invention according to claim 1 for solving the above-mentioned problem is a connector used to integrate a plurality of members, and is a plurality of tools that are embedded in pilot holes provided in each of the members and aligned on a coaxial line. And a buffer shaft that connects the adjacent short shaft rods, the short shaft rod is integrated with the embedded member, and the buffer shaft is more elastic than the short shaft rod. A material that easily causes plastic deformation is used, and the material is disposed so as to straddle the boundary between adjacent members. The buffer shaft has a smaller diameter than the short shaft rod and is provided with male screws at both ends thereof. A female screw is provided on the end surface of the shaft rod, and the plurality of short shaft rods arranged on the coaxial line are all integrated through the buffer shaft by screwing the male screw and the female screw. It is a connecting tool.

  The connector according to the present invention is not composed of a single metal rod as in the prior art, but is characterized in that a plurality of short shaft rods are integrated with a buffer shaft. Therefore, all the short axis bars are arranged on the coaxial line. In addition, as a general rule, one short shaft rod is assigned to each member to be connected. However, when multiple members are stacked, one short shaft rod may penetrate a plurality of members all together. is there. In the case where two adjacent members are connected in a T-shape or L-shape, there are two short shaft rods, one short shaft rod is embedded in each member, and the two short shaft rods are buffer shafts. Integrate with. However, depending on conditions, a plurality of sets of connectors may be arranged in a single connection structure.

  The member in which the short shaft rod is embedded is premised on various kinds of wood, and a pilot hole is processed in the member in advance in order to embed the short shaft rod. The short shaft rod needs to be integrated with the member by some means to prevent the short shaft from coming off the member. As a specific example, there is a method of inserting a drift pin or a bolt so as to penetrate the member and the short shaft rod. Other specific examples include a method of using a lag screw or a deformed steel bar as a short shaft bar. When a 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 buffer shaft must have a smaller diameter than the short shaft rod, and when it receives a tensile load, it must be elastically plastically deformed to absorb the impact. However, if a large deformation occurs under daily load, the rigidity of the building is reduced. Therefore, the strength is adjusted so that it functions effectively only when suddenly an excessive load is applied due to an earthquake. The buffer shaft has a smaller diameter than 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 a carbon steel wire for cold heading (SWCH) that hardly causes elasto-plastic deformation even when a tensile load is applied. Moreover, about a buffer shaft, the rolled steel bar (SNR) for building structures is mentioned. Rolled steel bars for building structures are excellent in toughness and easily absorb impact loads, and are susceptible to plastic deformation without breaking against overload. Moreover, these materials have no major problems in acquisition and processing, and conventional manufacturing techniques can be used.

  Male screws are formed on both ends of the buffer shaft, and female screws that are screwed to the male screw are formed on the end surface of the short shaft rod. Integrate the shaft rod. Actually, in order to prevent loosening between 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 surface of the short shaft rod to increase the friction between the male screw and the female screw. Of course, this nut should not protrude from the side peripheral surface of the short shaft rod.

  In this way, by using a connecting tool in which a plurality of short shaft rods are integrated with a buffer shaft, even if an excessive tensile load acts between members, the buffer shaft is elastically deformed to absorb the impact. Prevents damage to the parts. In addition, in the present invention, it is easy to select the short shaft bar and the buffer shaft as appropriate, and to manufacture the optimally shaped connector according to the construction location each time, and in addition, by changing the screwing length of the male screw and the female screw Also, fine adjustment of the embedding position of the short shaft rod can be realized, and the versatility is extremely high, and it can be used in any connection structure.

  As in the first aspect of the invention, 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 can be appropriately combined so that the configuration and overall length of the connecting tool can be freely set. Can be adjusted. Therefore, the product of the present invention is extremely versatile, it is not necessary to manufacture a short shaft rod or a buffer shaft each time, and it can be used for any connection structure with only a limited kind of stock, which is advantageous in terms of cost. . Moreover, even when an excessive tensile load acts between the connected members, the shock absorbing shaft can absorb the impact and prevent the members from being damaged, and provide a wooden structure with excellent safety at a low cost.

It is a perspective view which shows the example of the shape of the coupling tool by this invention, and its usage example, A pillar and a horizontal member are integrated in T shape using a coupling tool. In the perspective view and longitudinal cross-sectional view which show the state which integrated the two members of FIG. 1 into T shape, the upper end surface of a pillar and the lower surface of a horizontal member are contacting. 1 is a longitudinal sectional view showing a case where an excessive load is applied in a direction in which the two members are separated after the two members of FIG. 1 are integrated, and in the upper part of the drawing, a state in which the buffer shaft is extended is illustrated. Below, the state where it was pushed back is drawn. In the connection tool composed of three short shaft rods and a perspective view showing the usage state, the pillars are arranged so as to sandwich the horizontal member, and these are integrated into a cross shape. It is the perspective view which shows the state which integrated the three members of FIG. 4 in the cross shape, and the shape of the coupling tool used here. The perspective view which shows the case where the end surface of a horizontal member is made to contact the side surface of a pillar, and these are integrated in L shape besides using a lag screw among two short axis bars which constitute a connecting implement It is. FIG. 7 is a perspective view showing a process of integrating the two members of FIG. 6 into an L shape. At the time of construction, only the lag screw is first embedded in the pillar. It is a perspective view which shows the form which changed a part of FIG. 6, and used the deformed steel bar as a short shaft bar 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 connector has a shape in which two short shaft rods 11 and 12 aligned on a coaxial line are integrated with a buffer shaft 21, and a member 31 corresponding to a column and a member 41 corresponding to a horizontal member are formed in 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 integrated with the members 31 and 41. The shaft 11 is embedded in the member 31, the upper short shaft 12 is embedded in the member 41, and the upper and lower short shafts 11 and 12 are integrated by the buffer shaft 21. Therefore, male screws 22 are formed at both ends excluding the center of the buffer shaft 21. A female screw 18 that is screwed into the male screw 22 is formed on the upper end surface of the lower short shaft rod 11 and the lower end surface of the upper short shaft rod 12. Further, a nut 23 is used to prevent the male screw 22 and the female screw 18 from loosening.

  A pilot hole 35 is machined in the center of the upper end surface of the member 31 corresponding to the column in order to embed the short shaft rod 11. The prepared hole 35 has a bottom and is finished to have an inner diameter that allows the short shaft rod 11 to be fitted without looseness. 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. For this reason, a pin hole 39 is formed on the side surface of the member 31 so as to cross the lower hole 35 and go out to the opposite surface, and a side hole 19 is formed on the side peripheral surface of the short shaft rod 11. Naturally, the pin hole 39 and the side hole 19 are designed so as to be aligned concentrically. In addition, regarding the member 31, the pin hole 39 is processed on both two orthogonal side surfaces, and the drift pin 29 is driven in a cross shape when viewed from directly above.

  About the member 41 equivalent to a horizontal member, in order to embed the short shaft rod 12, the pilot hole 45 is processed so that the upper and lower surfaces may be penetrated. In addition, the pin holes 49 for driving the drift pins 29 are arranged in parallel in three upper and lower rows. As described above, the arrangement of the pin holes 39 and 49 varies depending on the members 31 and 41. In the present invention, by selecting the short shaft rods 11 and 12 as appropriate, 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 prepared holes 35 and 45 and the pin holes 39 and 49 are processed in the members 31 and 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. Thereafter, when the upper end of the short shaft rod 12 is inserted into the pilot hole 45 of the member 41 and the upper and lower members 31 and 41 come into contact with 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 via the connector. Contrary to this procedure, the short shaft rod 11 may be embedded in the member 31 after the short shaft rod 12 is embedded in the member 41.

  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 the column and the lower surface of the member 41 corresponding to the horizontal member are in contact with each other. . Also, the short shaft bar 11 is embedded in the pilot hole 35 of the member 31, the short shaft rod 12 is embedded in the pilot hole 45 of the member 41, and the two short shaft bars 11, 12 arranged in the vertical direction are connected by the buffer shaft 21. It is integrated. Therefore, the buffer shaft 21 receives the load acting in the direction in which the two members 31 and 41 are separated from each other. Thus, the buffer shaft 21 is extremely important in securing the rigidity of the connection structure, and the material, diameter, and length thereof 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 the interval between the adjacent short shaft rods 11 and 12 can be reduced by adjusting the screwing length between the male screw 22 and the female screw 18. It is easy to adjust. Therefore, even when 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 processed into the members 31 and 41 can be determined flexibly, and the convenience during construction is excellent. . In addition, the drift pin 29 is held by friction with the members 31 and 41 and does not fall off carelessly.

  FIG. 3 shows a case where an excessive load is applied in the direction of separating the two members 31 and 41 after the two members 31 and 41 of FIG. 1 are integrated. In the “stretched state” in the upper part of FIG. 3, the buffer shaft 21 is stretched by the load, and a gap is generated at the boundary between the two members 31 and 41. Thus, the shock is absorbed by the buffer shaft 21 being stretched, and the members 31 and 41 can be prevented from being damaged. Even when the buffer shaft 21 is stretched, if it is within the range of elastic deformation, it is quickly restored to its original state.

  An excessive load acts in the direction in which the two members 31 and 41 are pulled apart, 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. Thereafter, when a load is applied in a direction in which the two members 31 and 41 are brought closer to each other by gravity or the like, the “push-backed state” in the lower part of FIG. Thus, the buffer shaft 21 is bent, the gap between the two members 31, 41 is reduced, and the state close to the initial state can be maintained. If a rolled steel bar (SNR) for building structure is used as the material of the buffer shaft 21, it is difficult to break due to its characteristics, and the connection of the two members 31, 41 can be maintained while repeating plastic deformation.

  FIG. 4 shows a connector composed of three short shaft rods 11, 12, and 13 and a use state thereof. The arrangement of the members constituting the skeleton of the wooden building is various, and as shown in this figure, the other members 31, 51 are arranged so as to sandwich the member 41 corresponding to the horizontal member, and these are integrated into a cross shape. Sometimes. The connecting tool used here corresponds to the three members 31, 41, 51, and the short shaft rods 11, 13, 12 are three, and the two buffer shafts 21 are connected between them.

  The connecting tool includes a short shaft rod 11 embedded in a member 31 corresponding to a lower column, a short shaft rod 13 embedded in a member 41 corresponding to a horizontal member, and a short shaft rod 12 embedded in a member 51 corresponding to an upper column. In addition, a total of two buffer shafts 21 are connected to each other, and a locking nut 23 is screwed to both ends of each buffer shaft 21. Therefore, female screws 18 are formed on the short shaft rod 13 at the center at two locations on the top and bottom.

  As for the two members 31 and 51 corresponding to the pillars, pin holes 39 and 59 are processed on two orthogonal side surfaces, and the side holes 19 of the short shaft rods 11 and 12 are also formed in two directions. However, for the member 41 corresponding to the horizontal member, two rows of pin holes 49 aligned in parallel are processed up and down, and the side holes 19 of the short shaft rod 13 are also formed in two rows in parallel. Thus, in this invention, it can respond | correspond to various connection structures by combining the various short axis rods 11, 12, and 13. FIG.

  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. The lower end surface of the member 51 corresponding to the upper column is in contact with the upper surface of the member 41. In addition, short shaft bars 11, 13, and 12 are embedded in the pilot holes 35, 45, and 55 of the individual members 31, 41, and 51, and the buffer shafts 21 are connected therebetween. Therefore, when a load is applied in a direction in which the upper and lower members 31 and 51 are separated from each other, the buffer shaft 21 receives the shock and absorbs an impact by the elastic-plastic deformation, thereby preventing the members 31, 41 and 51 from being damaged.

  FIG. 6 shows that the lag screw is used for one of the two short shaft rods 14 and 15 constituting the coupling tool, and the end surface of one member (horizontal member) 41 is connected to the other member (column) 31. The case where it contacts with a side surface and these are integrated in L shape is shown. The short shaft rod 15 in this figure is a diverted lag screw as it is, and has a spirally extending ridge 25 formed on its side peripheral surface, and this bites into the inner peripheral surface of the pilot hole 35. The short shaft rod 15 is integrated with the member 31. In addition, a hexagonal head 26 is provided on one end face of the short shaft rod 15 in order to hang a tool during embedding, and a female screw 18 is formed at the center thereof. it can.

  Next, the short shaft rod 14 embedded in the member 41 corresponding to the horizontal member has a simple columnar shape, and the short pin 14 is fixed to the member 41 by inserting the drift pin 29 into the side hole 19 thereof. A female screw 18 is formed on one end surface of the short shaft rod 14 so that the buffer shaft 21 can be screwed together. 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 this figure, in order to counter the bending moment acting on the member 41, two sets of upper and lower connecting tools are arranged. Therefore, the pilot holes 35 and 45 are also processed in two upper and lower rows.

  FIG. 7 shows a process of integrating the two members 31 and 41 of FIG. 6 into an L shape. At the time of construction, only the short shaft rod (lag screw) 15 is first embedded in the member (column) 31. When embedding the short shaft rod 15 in the member 31, it is necessary to put a tool on the head 26 and rotate it. Therefore, the work of assembling other parts 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 protrude from the side surface of the member 31 as depicted in the upper part of FIG. Thereafter, the short shaft rod 14 is inserted into the pilot hole 45 of the member 41, the members 31 and 41 are brought into contact with each other, and the drift pin 29 is driven from the side surface of the member 41, whereby the connecting operation is completed.

  FIG. 8 shows a form in which a part of FIG. 6 is changed, and a deformed steel bar is used as the short shaft bar 16 embedded in the member (horizontal member) 41. The deformed steel bar has ribs 27 regularly formed on the side peripheral surface thereof, and the deformed steel bar is integrated with the member 41 by applying the adhesive 28 over the entire side peripheral surface and embedding it in the prepared hole 45. . At the time of construction, first, only the short shaft rod (lag screw) 15 is embedded in the member (column) 31, and the left and right short shaft rods 15 and 16 are integrated via the buffer shaft 21 and the nut 23. The short shaft rod 16 or the like is projected. Next, the adhesive 28 is applied to the side peripheral surface of the short shaft rod 16, inserted into the pilot hole 45 of the member 41, the members 31, 41 are brought into contact with each other, and the adhesive 28 is dried. .

  As shown in the figures so far, if the short shaft 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, and their combination can be done without difficulty. It is assumed that it can be done, but you can decide freely.

11 Short shaft rod (Female thread on top of the figure)
12 Short shaft rod (Female thread on the bottom of the figure)
13 Short shaft rod (Female thread on both end faces)
14 Short shaft rod (Female thread and side holes on one end face in two rows in the same direction)
15 Short shaft rod (lag screw)
16 Short shaft bar (deformed 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 (column)
35 Pilot hole 39 Pin hole 41 Member (horizontal material)
45 Pilot hole 49 Pin hole 51 Member (pillar)
55 Pilot hole 59 Pin hole

Claims (1)

A connector used to integrate a plurality of members (31, 41, 51),
A plurality of short rods (11 to 16) embedded in pilot holes (35, 45, 55) provided in each of the members (31, 41, 51) and arranged on the same axis;
A buffer shaft (21) connecting the adjacent short shaft rods (11 to 16);
Consists of
The short shaft rods (11 to 16) are integrated with the embedded members (31, 41, 51),
The buffer shaft (21) is disposed so as to straddle the boundary of the adjacent members (31, 41, 51) using a material that is more easily elastically plastically deformed than the short shaft rods (11 to 16).
The buffer shaft (21) has a smaller diameter than the short shaft rods (11 to 16) and is provided with male screws (22) at both ends thereof.
An internal thread (18) is provided on the end face of the short shaft rod (11 to 16),
By screwing the male screw (22) and the female screw (18), the plurality of short shaft rods (11 to 16) arranged on the coaxial line are all integrated through the buffer shaft (21). A connecting tool characterized.

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