JP4452123B2 - Frame material, frame material coupling method, and frame material coupling jig - Google Patents

Description

  The present invention relates to a frame material mainly used for a frame structure such as a seismic reinforcement frame and a ball joint type truss structure, and a method for connecting the frame material, and in addition, a frame material connection treatment used when connecting the frame material. Concerning ingredients.

  Conventionally, a ball joint type truss structure used for a roof frame or the like is known (for example, see Patent Document 1). This truss structure is formed by connecting a plurality of frame members to each other via spherical node members as connected members.

  The frame material is configured to include a rod-shaped main material, a connecting bolt attached to an end portion of the main material, and a cylindrical body mounted around the shaft portion of the connecting bolt protruding from the end surface of the main material. Yes. In addition, a locking portion that abuts the end surface of the main material protrudes from the shaft portion of the coupling bolt, and a guide groove that engages the locking portion is formed in the cylindrical body in the axial direction of the coupling bolt. Are formed along. That is, the connecting bolt rotates together with the cylindrical body because the engaging portion engages with the guide groove of the cylindrical body, and further, the guide groove is formed along the axial direction, so that it can advance and retreat in the axial direction. It is. In addition, when a latching part contact | abuts to the end surface of a main material, the penetration | invasion in the main material of a connection bolt is blocked | prevented.

  On the other hand, the nodal member has a plurality of screw holes into which the connecting bolt is screwed. A mounting surface is formed around each screw hole so that the end surface of the cylinder is in close contact therewith.

  Then, after the tip of the connecting bolt is positioned at the opening of the screw hole of the node member, when the connecting bolt is rotated through the cylindrical body, the shaft portion is screwed into the screw hole, and the frame material and the node member Will be linked.

  Here, the length of the cylindrical body is smaller than the length of the shaft portion protruding from the end surface when the locking portion comes into contact with the end surface of the main material. In this way, even when the connecting bolt is most retracted, the tip protrudes from the cylindrical body, so that the shaft portion can be easily and reliably screwed into the screw hole of the node member.

Japanese Utility Model Publication No. 4-24033 (FIG. 1)

  However, the separation distance between the mounting surfaces of two adjacent node members is equal to the length from the end of one cylinder of the frame material to the end of the other cylinder, so the separation is fixed. When the frame material is arranged between the two node members in the state, the shaft portion of the connecting bolt protruding from the cylindrical body may be caught by the node member, which may interfere with the assembly work.

  In order to solve such a problem, the length of the connecting bolt and the length of the cylindrical body may be adjusted so that the tip of the connecting bolt does not protrude from the cylindrical body even when the connecting bolt is most retracted. Then, since it becomes difficult to screw the shaft portion of the connecting bolt into the screw hole of the node member, the work efficiency is deteriorated.

  This problem is not limited to the frame material used for the ball joint type truss structure, but when connecting the frame material whose tip does not protrude from the cylinder when the connection bolt is most retracted to the connected member. This is a problem that applies in common, and also occurs when a frame material is used as a brace material in the ball joint method.

  From this point of view, the present invention is a frame material whose tip does not protrude from the cylindrical body when the connecting bolt is retracted most, and the shaft portion of the connecting bolt is simply and reliably screwed into the screw hole of the connected member. It is an object to provide a frame material that can be combined, and further provides a method for connecting such a frame material to a connected member, and in addition, connects such a frame material and a connected member. It is an object of the present invention to provide a frame material connecting jig to be used at the time.

  The invention of claim 1 devised to solve such problems is a rod-shaped main member, a connecting bolt attached to an end of the main member, and a shaft portion of the connecting bolt. A locking member that abuts against an end surface of the main material, and the length of the cylindrical body is the locking member. Is the same as or larger than the length of the shaft portion protruding from the end surface when abutting against the end surface, and a guide groove with which the locking portion engages is formed inside the cylindrical body. It is formed along the axial direction of the connecting bolt, and a notch communicating with the guide groove is formed at the end of the cylindrical body on the main material side.

  In such a frame material, in the state where the engaging portion of the connecting bolt is in contact with the end surface of the main material, that is, in the state where the connecting bolt is most retracted, the tip of the frame material does not protrude from the cylinder. Even if it is a case where it arrange | positions between two to-be-connected members in the state where the separation distance was defined, presence of a connection bolt does not interfere with assembly work. In addition, since a notch communicating with the guide groove is formed at the end of the cylindrical body on the main material side, the locking portion of the connecting bolt can be moved toward the connected member using the notch. It becomes. That is, after arranging the frame material between two connected members in a state where the separation distance is fixed, it is possible to project the tip of the connecting bolt housed inside the cylindrical body from the cylindrical body. When the cylindrical body is rotated in a predetermined direction, the shaft portion of the connecting bolt can be easily and reliably screwed into the screw hole of the connected member. In addition, in this specification, a to-be-connected member means the member to which a frame material is connected, and is used for a truss structure as long as a screw hole into which a connecting bolt is screwed is formed. In addition to a spherical node member, it may be a pillar material, a beam material, a wall material, or a member fixed to these.

  The invention of claim 2 includes a rod-shaped main material, a connecting bolt attached to an end portion thereof, and a cylindrical body mounted around the shaft portion, and an end surface of the main material is provided on the shaft portion of the connecting bolt. A locking portion that abuts on the projection protrudes, and the length of the cylindrical body is the same as the length of the shaft portion that protrudes from the end surface when the locking portion contacts the end surface, or the shaft portion. A guide groove that engages with the locking portion is formed along the axial direction of the connecting bolt, and the end of the cylinder on the main material side is formed in the cylinder. A method of connecting a frame material in which a notch communicating with the guide groove is formed to a connected member, from the notch formed at the end of the cylinder on the main material side. The pushing member is inserted into the inside, the leading end of the pushing member is formed on the shaft portion of the connecting bolt, and the end surface of the main material After having intruded between, characterized in that screwing the shaft portion of the connecting bolt by rotating the cylindrical body to the threaded hole formed in the connecting member.

  Such a frame material connecting method is characterized in that a connecting bolt is pushed out to the connected member side using a notch formed in the cylindrical body, and the cylindrical body is rotated while maintaining this state. If it does in this way, even if it is a case where the front-end | tip does not protrude from a cylinder body in the state which the connection bolt retracted most, the axial part of a connection bolt can be screwed together in the screw hole of a to-be-connected member easily. it can.

  The invention of claim 3 includes a rod-shaped main material, a connecting bolt attached to the end portion thereof, and a cylindrical body mounted around the shaft portion, and the end surface of the main material is provided on the shaft portion of the connecting bolt. A locking portion that abuts on the projection protrudes, and the length of the cylindrical body is the same as the length of the shaft portion that protrudes from the end surface when the locking portion contacts the end surface, or the shaft portion. A guide groove that engages with the locking portion is formed along the axial direction of the connecting bolt, and the end of the cylinder on the main material side is formed in the cylinder. Is a frame material connecting jig used when connecting a frame material in which a notch communicating with the guide groove is connected to a member to be connected, and is a cylindrical member that is wrapped around the cylinder. A main body portion and an extrusion portion attached to an end portion of the main body side of the main body portion, and the main body portion is associated with the cylindrical body. And the pushing portion is inserted into the inside of the cylindrical body from a notch formed at the end on the main material side of the cylindrical body, and the tip thereof is the connecting bolt. It is characterized in that it enters between the locking portion formed on the shaft portion and the end surface of the main material.

  Such a frame material connecting jig is preferably used when the frame material according to claim 1 is connected to a member to be connected. According to this frame material connecting jig, the frame material connecting jig The cylinder can be rotated in a predetermined direction while maintaining the state where the bolt is pushed out to the connected member side, so that the case where the tip of the connection bolt does not protrude from the cylinder when it is retracted most. However, the shaft portion of the connecting bolt can be easily and reliably screwed into the screw hole of the connected member.

  A fourth aspect of the present invention is the frame material coupling jig according to the third aspect, wherein an engagement hole is formed in a side portion of the cylindrical body, and the engagement hole is formed in an inner surface of the main body portion. The engaging part which engages with is protruded.

  According to such a frame material connecting jig, since the engaging portion that engages with the engaging hole of the cylinder is provided on the inner surface of the main body, even if the cylinder of the frame material is cylindrical, this cylinder It becomes possible to rotate the body.

  According to the frame material of the present invention, the presence of the connecting bolt does not interfere with the assembly work, and the shaft portion of the connecting bolt can be easily and reliably screwed into the screw hole of the connected member. .

  Further, according to the method for connecting the frame members according to the present invention, the shaft portion of the connection bolt can be easily and surely secured even when the tip of the connection bolt of the frame material is not retracted in the most retracted state. It can be screwed into the screw hole of the connected member.

  Furthermore, according to the jig for connecting the frame material according to the present invention, the cylinder can be rotated while maintaining the state where the connecting bolt of the frame material is pushed out to the connected member side, so that the connecting bolt is most retracted. In this case, even if the tip does not protrude from the cylindrical body, the shaft portion of the connecting bolt can be easily and reliably screwed into the screw hole of the connected member.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.
In addition, in this embodiment, as shown in FIG. 1, the case where the frame material B is used as a truss chord material of a ball joint truss structure is illustrated.

(Frame material)
As shown in FIG. 1, the frame material B according to the present embodiment is connected to a spherical node member S that is a connected member, and is attached to a rod-shaped main material 10 and an end portion of the main material 10. The connecting bolt 20 is provided, and a cylindrical body 30 is provided around the shaft portion 22 of the connecting bolt 20. Here, the nodal member S will be described. As shown in FIG. 2, the nodal member S has screw holes S1, S1,. A mounting surface S2 is formed around each screw hole S1 so that the end surface of the cylindrical body 30 is in close contact therewith.

  The main material 10 includes a tubular tube portion 10A and an end plug 10B that closes an opening of the tube portion 10A. The tube portion 10A is made of an extruded shape made of an aluminum alloy, and the end plug 10B is made of a forged product, a cut product, or a cast product made of an aluminum alloy. The end plug 10B includes a bottomed cylindrical base portion 11 fixed to the end portion of the tube portion 10A by friction welding, and a truncated cone portion 12 formed integrally with the base portion 11. The base 11 is formed with a recess 11a for accommodating the head 21 of the connecting bolt 20, and at the center of the bottom surface 11b of the recess 11a, as shown in FIG. A bolt insertion hole 13 reaching the end face 12a is formed. The outer diameter of the end surface 12a of the truncated cone part 12 (that is, the end surface 12a of the main material 10) is substantially equal to the outer diameter of the cylindrical body 30 (see FIG. 2).

  As shown in FIG. 3B, the connecting bolt 20 is inserted from the tube portion 10A side into the bolt insertion hole 13 of the end plug 10B before the tube portion 10A and the end plug 10B are fixed to each other. It protrudes from the end surface 12 a of the material 10. The shaft portion 22 is provided with a pair of locking portions 23, 23 that abut against the end surface 12 a of the main material 10 when the connecting bolt 20 is most retracted. As shown in FIG. 2, the locking portions 23 and 23 are formed by fitting a pin 23 b longer than the diameter of the shaft portion 22 into a pin hole 23 a formed in the shaft portion 22. The locking portions 23 and 23 also function as stoppers that prevent the connecting bolt 20 from coming out to the tube portion 10A side.

  The cylindrical body 30 is made of a cylindrical member as shown in FIG. 4 (a), and the length of the cylindrical body 30 is as shown in FIG. 3 (b). This is larger than the length of the shaft portion 22 projecting from the end surface 12a when it is in contact with the ten end surfaces 12a. Although not shown, the length of the cylindrical body 30 is the length of the shaft portion 22 protruding from the end surface 12a when the locking portions 23, 23 of the connecting bolt 20 are in contact with the end surface 12a of the main material 10. May be the same.

  As shown in FIG. 4 (b), a pair of guide grooves 31, 31 facing each other with the center line therebetween are provided in the cylindrical body 30 in the axial direction of the connecting bolt 20 (see FIG. 3 (b)). A notch 32 communicating with the guide groove 31 is formed at the end of the cylinder 30 on the main material 10 side (the left end in FIGS. 4A and 4C). Are formed along the diameter. Note that the engaging portions 23 and 23 (see FIG. 3B) of the connecting bolt 20 engage with the pair of guide grooves 31 and 31. Further, when viewed from the end face side of the cylindrical body 30 (see FIG. 4B), the pair of guide grooves 31 and 31 are arranged on the same straight line.

  As shown in FIG. 4A, a viewing hole 33 communicating with the guide groove 31 is formed along the diameter of the cylindrical body 30 on the side portion of the cylindrical body 30. Further, a pair of engaging holes 34, 34 communicating with the guide groove 31 are provided at predetermined intervals in the axial direction between the notch 32 and the viewing hole 33 on the side of the cylindrical body 30. Has been. Each engagement hole 34 is formed along the diameter of the cylindrical body 30. In the present embodiment, two guide grooves 31 are formed, but a notch 32, a viewing hole 33, and a pair of engagement holes 34 are formed for each guide groove 31. That is, the cylindrical body 30 includes two notches 32, four engagement holes 34, and two viewing holes 33 that communicate with the inside thereof.

  Each peephole 33 is formed at the position of the locking portions 23, 23 when the shaft portion 22 of the connecting bolt 20 is completely screwed into the screw hole S1 of the node member S (see FIG. 5C). Has been. That is, the fastening state of the connecting bolt 20 can be confirmed by looking into the inside from the viewing hole 33.

  As shown in FIG. 5A, the frame material B having such a configuration is in a state where the locking portions 23 and 23 of the connecting bolt 20 are in contact with the end surface 12a of the main material 10, that is, the connecting bolt. In the state where 20 is most retracted, since the tip does not protrude from the cylindrical body 30, even when the frame material B is disposed between the two node members S, S in a state where the separation distance is determined, The presence of the connecting bolt 20 does not interfere with the assembly work.

  Further, the connecting bolt 20 rotates together with the cylindrical body 30 because the engaging portions 23, 23 engage with the guide grooves 31, 31 of the cylindrical body 30, and the guide grooves 31, 31 extend along the axial direction. Because it is formed, it advances and retreats in the axial direction. That is, if the cylindrical body 30 is rotated in a predetermined direction with the tip of the shaft portion 22 engaged with the screw hole S1 of the nodal member S, the connecting bolt 20 moves in the axial direction to the screw hole S1. It will be screwed.

Next, a method of connecting the frame material B to the spherical node member S which is a connected member will be described.
As shown in FIG. 5A, first, the frame body B is configured by mounting the cylindrical body 30 around the shaft portion 22 of the connecting bolt 20 protruding from the end surface 12 a of the main material 10. The end surface is brought into contact with the mounting surface S2 of the node member S. Next, a sharp pushing member P is inserted into the inside of the cylindrical body 30 from the notch 32 of the cylindrical body 30, and as shown in FIG. And the end surface 12 a of the main material 10. If it does so, the whole connection bolt 20 will be pushed out to the node member S side, As a result, the front-end | tip of the axial part 22 will protrude slightly from the cylinder 30, and will enter into the screw hole S1 of the node member S slightly. When the cylindrical body 30 is rotated while maintaining this state, the shaft portion 22 of the connecting bolt 20 is screwed into the screw hole S1 of the node member S as shown in FIG. The material B and the node member S are connected.

  As described above, the frame material B is formed with the notches 32 and 32 communicating with the guide grooves 31 and 31 at the end of the cylindrical body 30 on the main material 10 side. Thus, the connecting bolt 20 can be moved in the direction of the node member S. That is, the connecting bolt 20 whose tip does not protrude from the cylindrical body 30 in the most retracted state can be easily and reliably screwed into the screw hole S1 of the node member S.

(Frame material connection jig)
Next, a frame material coupling jig J (hereinafter sometimes simply referred to as “jig J”) that is preferably used when coupling the frame material B to the coupled member S is referred to the attached drawings. And will be described in detail.

  As shown in FIG. 6, the jig J includes a cylindrical main body 40 that is wrapped around the cylindrical body 30 of the frame material B, and a pair of extruding parts 50 and 50 attached to the main body 40. Configured.

  The main body 40 is composed of a pair of blocks 41 and 41 having substantially the same configuration that are detachably coupled. The outer shape of these blocks when coupled is a hexagonal cross section, and the inner shape is a circular cross section. .

  As shown in FIG. 7, each block 41 includes a pair of end surfaces 41a and 41a having a substantially C shape, a semi-cylindrical inner peripheral surface 41b connecting inner edges of the end surfaces 41a and 41a, and end surfaces 41a and 41a. The outer peripheral surface 41c which exhibits the shape which halved the hexagonal column which ties the outer edges of each other, and the butting surfaces 41d and 41d interposed between the inner peripheral surface 41b and the outer peripheral surface 41c. A pair of engaging portions 42, 42 project from a substantially central portion of the inner peripheral surface 41b, and a pair of coupling members 43, 43 having a substantially U shape are disposed on the outer peripheral surface 41c. It protrudes at a position adjacent to 41d. Further, a positioning convex portion 46 is formed on each abutting surface 41d of one block 41, and a positioning convex portion 46 of one block 41 is inserted in each abutting surface 41d of the other block 41. A recess 47 is formed.

  Each engaging part 42 engages with each engaging hole 34 of the cylinder 30 when each block 41 is arranged around the cylinder 30.

  A screw rod 44 is attached to the coupling member 43 of one block 41 (the lower block 41 in FIG. 7), and a nut 45 is screwed to the tip of the screw rod 44. The screw rod 44 is attached to the coupling member 43 so as to be rotatable about its proximal end.

  Each extrusion part 50 is arrange | positioned at the edge part by the side of the main material 10 of each block 41. As shown in FIG. As shown in FIG. 8, each extrusion portion 50 includes an extrusion piece 51 protruding from the inner peripheral surface 41 b of each block 41, a stopper 52 formed at the base end portion of the extrusion piece 51, and an extrusion from the stopper 52. The leg portion 53 protrudes in the opposite direction to the piece 51, and an urging member 54 is provided around the leg portion 53.

  As shown in FIG. 7, the extruded piece 51 is inserted into a notch 48 formed on the end face of each block 41 on the main material 10 side, and the tip thereof is sharpened. The extruded piece 51 is formed into a shape that can be inserted into the cylindrical body 30 from the notch 32 of the cylindrical body 30 of the frame material B.

  As shown in FIG. 8, the stopper 52 is formed so as to be slidable inside the cylindrical cover member 60, and contacts the outer surface of the block 41 with the extruded piece 51 protruding most.

  The leg portion 53 is accommodated inside the cover member 60, and the rear end portion thereof is inserted into the small diameter hole portion 61 of the cover member 60.

  The urging member 54 urges the entire pushing portion 50 toward the block 41, and one end thereof is in contact with the stopper 52 and the other end is in contact with the step portion 63 of the cover member 60.

  That is, the extruding piece 51 of the extruding portion 50 is configured to be able to protrude and retract from the inner peripheral surface 41b of the block 41, and normally protrudes from the inner peripheral surface 41b and a force larger than the urging force of the urging member 54 is externally applied. When acting in the direction, the cover member 60 moves backward.

  The cover member 60 is fixed to the block 41, and accommodates therein a small-diameter hole portion 61 through which the rear end portion of the leg portion 53 of the push-out portion 50 is inserted, a biasing member 54, and a stopper. A large-diameter hole 62 that holds the slidable member 52 is formed.

  Next, a method for connecting the frame material B to the spherical node member S as the connected member using the jig J will be described.

First, as shown in FIG. 5A, a frame body B is formed by surrounding the cylindrical body 30 around the shaft portion 22 of the connecting bolt 20 protruding from the end surface 12 a of the main material 10, and the end surface of the cylindrical body 30 is formed. It is made to contact | abut to the attachment surface S2 of the nodal member S. FIG.
Next, as shown in FIG. 6, the jig J is mounted on the cylindrical body 30. Specifically, as shown in FIG. 7, the main body portion 40 (that is, the blocks 41 and 41) of the jig J in a separated state is arranged around the cylindrical body 30, and each engagement portion of each block 41 is arranged. 42 is inserted into each engagement hole 34 of the cylindrical body 30, and the positioning convex portion 46 of one block 41 is inserted into the positioning concave portion 47 of the other block 41, while the abutting surfaces 41d, 41d and the butting surfaces 41d and 41d of the other block 41 are butted, and the screw rods 44 of one block 41 are swung to be inserted into the notch portions of the coupling member 43 of the other block 41, and then the nut 45 is Just conclude.

  When the pair of blocks 41 and 41 are joined, as shown in FIG. 9A, the extruded piece 51 of the extruded portion 50 is inserted into the cylindrical body 30 from the notch 32 of the cylindrical body 30, and the distal end of the extruded piece 51 Enters between the locking portion 23 of the connecting bolt 20 and the end surface 12a of the main material 10 (see FIG. 3A). If it does so, the whole connection bolt 20 will be pushed out to the node member S side, As a result, the front-end | tip of the axial part 22 will protrude slightly from the cylinder 30, and will enter into the screw hole S1 of the node member S slightly.

  9B, when a spanner (not shown) is fitted on the outer periphery of the main body 40 of the jig J and rotated in a predetermined direction, the main body 40 engages with the cylindrical body 30. Therefore, the cylindrical body 30 rotates together with the jig J. As a result, the shaft portion 22 of the connecting bolt 20 is screwed into the screw hole S1 of the node member S, and finally the frame material B and the node member S are joined together. Will be linked.

  As described above, when the jig J is used, the cylindrical body 30 can be rotated in a predetermined direction while maintaining the state where the connection bolt 20 of the frame material B is pushed out to the node member S side. The shaft portion 22 of the connecting bolt 20 of the frame material B whose tip does not protrude from the cylindrical body 30 in the most retracted state can be easily and reliably screwed into the screw hole S1 of the node member S.

  The jig J is preferably used when the cylindrical body 30 is cylindrical. For example, when the outer shape of the cylindrical body 30 is a polygon, the inner peripheral surface of the main body is polygonal in cross section. In this case, the engagement hole 34 of the cylinder 30 and the engagement portion 42 of the main body 40 are not necessary.

  In the present embodiment, the case where the frame material B is used as a joint between the truss chord material and the node member of the ball joint truss structure is exemplified, but the present invention is not limited to this, and the brace of the seismic reinforcement frame Needless to say, it can be widely applied to buildings such as wood.

It is a perspective view which shows the state which connected the frame material which concerns on this invention to the node member (member to be connected). It is a disassembled perspective view of the frame material which concerns on this invention. (A) is sectional drawing of a main material, (b) is a side view of a connection bolt. (A) is a perspective view of a cylinder, (b) is an end view of the cylinder, and (c) is a broken perspective view of the cylinder. It is sectional drawing explaining the connection method of the frame material which concerns on this invention, Comprising: (a) is a figure which shows the state which made the cylinder of a frame material contact | abut to a node member (connected member), (b) is a cylinder The figure which shows the state which inserted the extrusion member in the notch of a body, (c) is a figure which shows the state which screwed the connection bolt into the screw hole of the node member (member to be connected). It is a perspective view which shows the state which mounted | worn the frame material connection jig | tool which concerns on this invention to the cylinder of the frame material. It is a perspective view which shows the state before attaching the jig | tool for frame material connection concerning this invention to the cylinder of a frame material. It is sectional drawing of the jig | tool for frame material connection which concerns on this invention. (A) is sectional drawing explaining the connection method of the frame material at the time of using the frame material connection jig | tool concerning this invention, Comprising: (a) mounted the frame material connection jig on the cylinder. The figure which shows a state, (b) is a figure which shows the state which screwed the connection bolt into the screw hole of the node member (connected member).

Explanation of symbols

B Frame material 10 Main material 10A Pipe portion 10B End plug 12a End surface of main material 13 Bolt insertion hole 20 Connection bolt 22 Shaft portion 23 Locking portion 30 Cylindrical body 31 Guide groove 32 Notch 33 Viewing hole 34 Engagement hole P Extrusion member J Jig for frame material connection 40 Main body part 42 Engagement part 50 Extrusion part S Node member (member to be connected)
S1 Screw hole

Claims (4)

A rod-shaped main material,
A connecting bolt mounted on an end of the main material;
A frame material comprising a cylindrical body mounted on the shaft portion of the connection bolt,
A locking portion that abuts against the end surface of the main material protrudes from the shaft portion of the connection bolt,
The length of the cylindrical body is the same as or larger than the length of the shaft portion protruding from the end surface when the locking portion comes into contact with the end surface,
Inside the cylindrical body, a guide groove to be engaged with the locking portion is formed along the axial direction of the connecting bolt,
A frame material, wherein a notch communicating with the guide groove is formed at an end of the cylindrical body on the main material side. A rod-shaped main material, a connecting bolt attached to the end portion thereof, and a cylindrical body mounted around the shaft portion,
A locking portion that abuts against the end surface of the main material is projected from the shaft portion of the connecting bolt,
The length of the cylindrical body is equal to or greater than the length of the shaft portion protruding from the end surface when the locking portion comes into contact with the end surface,
Inside the cylindrical body, a guide groove to be engaged with the locking portion is formed along the axial direction of the connecting bolt,
A method of connecting a frame material in which a notch communicating with the guide groove is formed at an end of the cylindrical body on the main material side to a connected member,
A pushing member is inserted into the inside of the cylindrical body from a notch formed at the end of the cylindrical body on the main material side, and a distal end of the pushing member is a locking portion formed on the shaft portion of the connecting bolt; The frame is inserted into the end surface of the main material, and then the cylindrical body is rotated so that the shaft portion of the connecting bolt is screwed into a screw hole formed in the connected member. How to connect the materials. A rod-shaped main material, a connecting bolt attached to the end portion thereof, and a cylindrical body mounted around the shaft portion,
A locking portion that abuts against the end surface of the main material is projected from the shaft portion of the connecting bolt,
The length of the cylindrical body is the same as or larger than the length of the shaft portion protruding from the end surface when the locking portion comes into contact with the end surface,
Inside the cylindrical body, a guide groove to be engaged with the locking portion is formed along the axial direction of the connecting bolt,
A frame material connecting jig used when connecting a frame material in which a notch communicating with the guide groove is connected to a connected member at an end portion on the main material side of the cylindrical body,
A cylindrical main body that is wrapped around the cylindrical body;
An extrusion portion attached to an end of the main body on the main material side,
The main body engages with the cylinder and rotates together with the cylinder,
The pushing portion is inserted into the cylindrical body from a notch formed at the end on the main material side of the cylindrical body, and a locking portion whose tip is formed at the shaft portion of the connecting bolt. And a frame material connecting jig, wherein the jig is inserted between the main material and an end face of the main material. An engagement hole is formed in a side portion of the cylindrical body,
The frame material connecting jig according to claim 3, wherein an engagement portion that engages with the engagement hole projects from an inner surface of the main body portion.

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