JP2007100874A - Member joint structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member joint structure for more stably jointing members to each other by using a bolt with its head arranged near a joint area between the members. <P>SOLUTION: In the member joint structure, a bolt 3 and a nut 4 threaded to the bolt 3 are relatively rotated to be threaded to each other forward and backward and the bolt 3 and the nut 4 are used for fastening and joining two members as a frame material 1 and a corner material 2 to each other. The structure comprises an operation receiving part 5 for receiving external rotating operation of the bolt 3 around an operation axis L extending to the direction of crossing the axial center thereof, and an operation converting part 6 for converting operating force received by the operation receiving part 5 into the rotation of the bolt 3 relative to the nut 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joining structure of members in which a bolt and a nut screwed to the bolt are rotated relative to each other by relative rotation, and two members are tightened and coupled using the bolt and the nut.

2. Description of the Related Art Conventionally, there are various types of joining structures for members that screw and reciprocate each other by relatively rotating a bolt and a nut screwed into the bolt, and tighten and connect two members using these bolt and nut. It is considered. One of them is a mode in which a bolt arranged inside the member and extending along the longitudinal direction of the member and a nut screwed to the bolt are used, and the two members are tightly coupled using the bolt and the nut. Is considered. (For example, refer to Patent Document 1.) In the configuration of Patent Document 1, the two members are a column main body and an arm. The nut is formed on a backing member disposed inside the column main body.
JP 2000-120627 A

  Here, in the configuration described in Patent Document 1, it is possible to obtain the effect of screwing the members more reliably by arranging the bolts in the longitudinal direction of the members. (Arm) is provided in the vicinity of the end opposite to the joining end. In other words, in such a configuration, the bolt extends substantially to the full length of the member, and the head of the bolt and the nut to be screwed to the bolt are greatly separated. If the head of the bolt and the nut are greatly separated from each other, there is a tendency for the connection to loosen due to an external action during long-term use.

  The present invention is configured to solve such problems.

  That is, in the member joining structure according to the present invention, a bolt and a nut screwed to the bolt are rotated relative to each other so that the two members are tightened and coupled using the bolt and the nut. A member joining structure, an operation receiving unit that receives a rotation operation from the outside around an operation axis that extends in a direction crossing the axis of the bolt, and an operation force received by the operation receiving unit and the bolt An operation conversion unit that converts the rotation relative to the nut is provided.

  If it is such, even if it is a case where the bolt is arranged along the longitudinal direction of the member, the operation receiving portion extends around the operation axis extending in a direction crossing the axis of the bolt applied from the outside. The operation force received by the operation receiving unit is converted into relative rotation between the bolt and the nut by the operation converting unit. Can be screwed onto the nut. That is, the head part of the bolt is arranged in the vicinity of the joining portion between the members, and the members can be joined more stably.

  As one aspect for realizing such a member joining mechanism, there is one in which the operation receiving unit is a tool receiving unit that allows the tool to be accessed from a direction crossing the axis of the bolt. If the tool receiving portion is configured in this way, the direction in which the bolt or nut provided near the joint crosses the axis of the bolt without inserting a tool from the end opposite to the joint of the long member. Accessible from.

  As an aspect which can implement | achieve the operation | movement conversion part mentioned above with a simple structure, what comprises the said operation | movement conversion part using the gear provided in the said nut is mentioned. With such a configuration, a gear mechanism using the gear as a driven gear can be configured, and the nut can be rotated relative to the bolt via the gear mechanism.

  As one of the specific modes of the joining structure of the members using the above-described motion converting portion, the motion converting portion is provided with a gear capable of meshing with a gear-shaped portion provided on the tool on the nut. The operation receiving portion is a tool holding hole for receiving the insertion of the tool from a direction intersecting with the axis of the bolt and holding the tool at a position where the gear-like portion of the tool can be engaged with the gear of the nut. Things. With such a configuration, the motion conversion unit can be realized with the minimum number of parts.

  Further, as another specific aspect of the joining structure of the members using the above-described motion converting portion, the motion converting portion crosses the driven gear that is a gear provided on the nut and the axis of the bolt. A drive-side gear provided on the outer peripheral surface of the inner end of the shaft member extending in the direction of engagement and having a pitch capable of meshing with the gear of the nut. What is a tool reception part which receives the access of the said tool from the direction which is provided in the direction end and crosses the axial center of a volt | bolt is mentioned. If it is such, a member can be joined using a tool which is difficult to mesh with a gear, such as a hexagon wrench.

  Furthermore, as an aspect in which such a configuration can be suitably realized, there is an example in which a gear is engraved on the nut along a surface substantially perpendicular to the axial direction of the bolt. If this is the case, in the mode of inserting a tool having a gear-shaped portion from the outside, the interaction between the gear-shaped portion and the nut gear during operation is different from the mode of using a so-called bevel tooth. If the relative position between the drive side gear and the driven side gear is shifted in the aspect using the shaft member having the drive side gear and the tool receiving portion. However, it is because it is easy to maintain a meshing state.

  As a structure for holding the nut and the bolt to the member that can preferably employ such a joining structure of the member, the nut is held by one member, and the other member crosses the axis of the bolt. There may be provided a bolt holding portion that accepts insertion of a bolt head from a direction and holds the bolt head in a non-rotatable manner. If it is such, since both insertion of a bolt and relative rotation operation of a bolt and a nut can be performed from the direction which crosses the axial center of the said bolt, the effect mentioned above can be implement | achieved more suitably.

  In particular, as a configuration for facilitating the operation of easily holding the nut on one member, the nut, a holder for rotatably holding the nut, and a nut unit having the operation receiving portion are provided. These members are made to be held immovably in the axial direction of the bolt. According to this structure, the nut can be handled together with the nut unit, and further, the nut unit is held on one member so as not to move in the axial direction of the bolt, thereby tightening the one member and the other member. This is because the connection can be made possible.

  As an aspect in which the configuration as described in the previous stage can be realized easily and with a small number of parts, the one member has a pipe-like nut unit insertion hole through which the nut unit can be inserted, and the nut unit holder has an axial shape. The outer periphery of the end portion is brought into contact with the inner periphery of the nut unit insertion hole, and the nut unit is held by the one member.

  Further, as a configuration for facilitating the attaching operation of the nut unit, there may be mentioned one provided with an insertion member provided inside the one member for positioning the nut unit.

  Furthermore, even if the motion conversion unit is configured using a gear provided on the head of the bolt, the motion conversion unit is configured using a gear provided on the nut. And substantially the same effect.

  In the present invention, the “direction intersecting the axis of the bolt” is a concept including all directions other than the direction coinciding with the axis of the bolt and the direction parallel to the axis of the bolt.

  If the joining structure of members according to the present invention is adopted, even if the bolt is arranged along the longitudinal direction of the member, the operation on the operation receiving portion is crossed from the outside to the axis of the bolt. Since the rotation operation is performed around the extending operation axis, such a bolt can be screwed onto the nut even if the bolt head is disposed inside the member. That is, the head part of the bolt is arranged in the vicinity of the joining portion between the members, and the members can be joined more stably.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1, 2, and 3, the joint portion according to this embodiment is a part that joins the frame member 1 that is one member and the corner member 2 that is the other member, and is a bolt 3 and the nut 4 screwed into the bolt 3 are rotated relative to each other by relative rotation, and the frame material 1 and the corner member 2 are tightly coupled using the bolt 3 and the nut 4. Is adopted. And the operation reception part 5 which receives the rotation operation from the outside of the surroundings of the operation axis line extended in the direction crossing the axial center of the said bolt 3, The operation force which this operation reception part 5 received is the said bolt 3 and the said nut 4 And a motion conversion unit 6 that converts the relative rotation to the relative rotation.

  Specifically, the frame material 1 is a pipe-like member formed by, for example, aluminum extrusion, and has a cavity 1s inside. The insertion member 11 is inserted into the cavity 1s. Further, the frame material 1 is provided with a through hole 1x which is a nut unit insertion hole through which a nut unit 7 having the nut 4 therein can be inserted, in the vicinity of the end on the side to be joined.

  The insertion member 11 has a cross-sectional shape corresponding to the internal shape of the cavity 1 s and can be inserted along the longitudinal direction of the frame material 1. The insertion member 11 has a bolt insertion hole 11x along the longitudinal direction of the frame member 1 when inserted into the cavity 1s, and a nut unit holding hole extending in a direction perpendicular to the bolt insertion hole 3x. 11y. The bolt 3 is inserted through the bolt insertion hole 11x in a direction along the longitudinal direction of the frame material 1. The nut unit holding hole 11y can communicate with a through hole 1x provided in the vicinity of the end portion on the side where the frame material 1 is joined, and the nut unit 7 is connected to the through hole 1x and the nut unit. By sequentially inserting the holding hole 11y, the outer periphery of the end of the nut unit 7 can be brought into contact with the inner periphery of the through hole 1x.

  On the other hand, the corner member 2 is a member formed by, for example, aluminum die casting in the present embodiment, and has a main body 21 having an outer shape flush with an outer surface in a state where the corner member 2 is joined to the frame material 1 and one end portion. It has at least a joint portion 22 formed and having an outer shape corresponding to the cavity 1 s of the frame material 1, and a step portion 23 provided between the main body 21 and the joint portion 22. The joint portion 22 is provided with a D hole 22x extending in a direction orthogonal to the axial direction of the bolt 3, and the bolt holder 8 can be inserted into the D hole 22x.

  The bolt 3 includes a head portion 31 having a prism shape in the present embodiment and a shaft portion 32 having a male screw provided extending from the head portion 31. The nut 4 is screwed onto the male screw of the shaft portion 32.

  The bolt holder 8 has a cross-sectional shape corresponding to the D hole 22x, a head holding hole 8x provided so as to accommodate the head 31 of the bolt 3 by cutting out the flat portion 8a, and the bolt 3 There is a shaft portion insertion hole 8y through which the shaft portion 32 can be inserted. More specifically, the head holding hole 8x has a shape substantially corresponding to the head 31 of the bolt 3, that is, a shape that can be engaged with the head 31 of the bolt 3 without a substantial gap. The bolt 3 is held around the axis of the bolt 3 in a non-rotatable manner with the bolt holder 8 inserted into the D hole 22x.

  As shown in FIG. 4, the nut 4 has a substantially cylindrical shape, and has a female screw hole 4 x in the axial center portion. A gear 4a is provided on one surface. The shaft portion 32 of the bolt 3 is screwed into the female screw hole 4x. Furthermore, in the present embodiment, the nut 4 is supported by the holder 71, and the nut unit 7 is configured using the nut 4 and the holder 71. The base portion is provided with a collar portion 41 to prevent the holder 71 from being detached later. 4A is a plan view of the nut 4, and FIG. 4B is a front view of the nut 4.

  As described above, the nut unit 7 includes the nut 4 and the holder 71 that stores the nut 4. The holder 71 is formed by combining two halved elements 711 and 711. The holder 71 receives a nut holding portion 71a that rotatably holds the nut 4 and a plus driver D that is a tool. A tool holding hole 71x for holding the Phillips screwdriver D and a bolt insertion hole 71y through which the bolt 3 can be inserted are provided so that the gear-shaped portion, that is, the tip D1 contacts the gear 4a of the nut 4. In addition, the said nut holding | maintenance part 71a is the cavity provided corresponding to the shape of the nut 4 in this embodiment.

  The nut unit 7 is positioned through the nut unit holding hole 11y of the insertion member 11 and the through hole 1x of the frame material 1. Specifically, the nut unit 7 can be inserted into the nut unit holding hole 11y, and the nut unit 7 is inserted into the through hole 1x and the nut unit holding hole 11y, and the through hole 1x and the nut are inserted. The unit holding hole 11y positions the nut unit 7 in the direction along the axis of the bolt 3, and the nut unit 7 is inserted into the nut unit holding hole 11y so that the through hole 1x of the frame material 1 is inserted. The nut unit 7 is positioned in the thickness direction of the frame material 1 so as to be placed on the side wall opposite to the side provided with the nut unit 7.

  In the present embodiment, the operation receiving unit 5 is a tool receiving unit that receives a tool, and more specifically, the tool holding hole 71x. That is, the tool holding hole 71x accepts the insertion of the plus driver D from the direction along the operation axis L intersecting with the axis of the bolt 3, that is, is accessible. Further, as described above, the plus driver D is held at a position where the tip D1 can mesh with the gear 4a of the nut 4 through the tool holding hole 71x.

  On the other hand, the motion conversion unit 6 is a gear 4a of the nut 4 in this embodiment, and the gear 4a meshes with the tip D1 of the plus driver D, and the plus driver D drives the gear 4a. Try to work. More specifically, when the plus driver D rotates, the gear 4a meshed with the tip D1 of the plus driver D is driven. On the other hand, the head of the bolt 3 is held non-rotatably in the D hole 22x of the corner member 2 via the bolt holder 8 as described above. The nut 4 is rotated relative to the bolt 3 so as to advance and retract. The engraving direction of the gear 4a of the nut 4 is inclined with respect to a plane perpendicular to the axis of the nut 4 so as to be able to mesh with the tip D1 of the plus driver D. That is, the tip D1 of the plus driver D and the gear 4a of the nut 4 are meshed in a bevel gear shape.

  Below, the procedure of joining the said frame material 1 and the said corner member 2 is shown.

  First, the insertion member 11 is inserted into the cavity 1 s of the frame material 1 to a position where the through hole 1x of the frame material 1 and the nut unit holding hole 11y of the insertion member 11 overlap.

  Next, the nut unit 7 is sequentially inserted into the through hole 1x of the frame material 1 and the nut unit holding hole 11y of the insertion member 11, and the outer periphery of the outer end of the nut unit 7 is inserted into the through hole 1x. The nut unit 7 is held so as not to move in the axial direction of the bolt 3 by contacting the inner periphery.

  Then, the shaft portion 32 of the bolt 3 is screwed into the nut 4 in the nut unit 7, and the head portion 31 of the bolt 3 is connected to the head holding hole 8 x of the bolt holder 8 and the bolt 3. The shaft portion 32 is inserted into the shaft portion insertion hole 8 y of the bolt holder 8, and the head portion 31 of the bolt 3 is mounted and held together with the bolt holder 8 in the D hole 22 x of the corner member 2.

  Then, a plus driver D is inserted into the tool holding hole 71x from the direction intersecting the axis of the bolt 3, the tip D1 of the plus driver D is engaged with the gear 4a of the nut 4, and the plus driver D is turned. The gear 4a of the nut 4 is driven. At this time, the axis of the plus driver D extends in a direction along the operation axis L intersecting the axis of the bolt 3, and the plus driver D rotates around the operation axis L.

  When the gear 4a of the nut 4 is driven by the plus driver D, the operation conversion unit 6 functions as described above. That is, the nut 4 and the bolt 3 rotate relative to each other, and the nut 4 and the bolt 3 are screwed back and forth. Thus, when the motion conversion part 6 is made to function and the nut 4 and the head 31 of the bolt 3 are moved relative to each other, the frame material 1 and the corner member 2 also move in the direction of mutual movement. When the distance between the nut 4 and the head 31 of the bolt 3 is further reduced, the joint portion 22 of the corner member 2 is inserted into the cavity 1 s of the frame material 1, and the side end of the frame material 1 is It abuts on the step portion 23 of the corner member 2. When the gear 4a of the nut 4 is further driven to the side where the nut 4 and the head portion 31 of the bolt 3 are brought closer to each other, the head portion 31 of the bolt 3 is brought into contact with the corner member 2 via the bolt holder 8. Since the outer wall of the nut unit 7 that is held and holds the nut 4 in the holder 71 is in contact with the through hole 1x of the frame material 1, it is tightened between the bolt 3 and the nut 4. Force is generated. With this tightening force, the frame material 1 and the corner member 2 are tightened and joined.

  In the member joining structure according to the present embodiment, the configuration as described above is adopted, so that the following effects can be realized.

  That is, the operation receiving unit 5 receives an external operation by the plus driver D from the direction crossing the axis of the bolt 3, and the operation force received by the operation receiving unit 5 by the operation converting unit 6 is the same as that of the bolt 3 and the By converting the rotation relative to the nut 4, the bolt head 31 and the nut 4 can be screwed back and forth. On the other hand, there is no need to access the head 31 or the nut 4 of the bolt 3 from the direction along the axis of the bolt 3 so that the head 31 and the nut 4 of the bolt 3 are screwed back and forth. A configuration in which the portion 31 is held by the joint portion 22 of the corner member 2 and the nut 4 screwed into the bolt 3 forms the nut unit 7 and is arranged in the vicinity of the joint portion of the frame material 1 can be realized. That is, the head 31 of the bolt 3 and the nut 4 can be embedded in the vicinity of the joint, and the members can be joined more stably.

  Since the operation receiving portion 5 is a tool receiving hole that is a tool receiving portion that allows the plus driver D to be accessed from the direction crossing the axis of the bolt 3, the operation receiving portion 5 is provided near the joint through the tool receiving hole. The nut 4 can be operated from the direction crossing the axis of the bolt 3.

  Since the motion conversion unit 6 is configured by using a gear 4a provided on the nut 4, the gear 4a functions as a driven gear driven by the tip D1 of the plus driver D, and the nut 4 The motion conversion unit 6 can be realized with a simple structure because it can be rotated relative to the bolt 3. In addition, together with the operation receiving portion 5 being the tool holding hole, such a joint structure can be realized with a minimum number of parts.

  While holding the nut 4 to the frame material 1, the corner member 2 receives the insertion of the head 31 of the bolt 3 from the direction intersecting the axis of the bolt 3 and rotates the head 31 of the bolt 3. Since the bolt holding portion for holding the bolt 3 is provided, both the insertion of the bolt 3 and the relative rotation operation of the bolt 3 and the nut 4 can be performed from the direction crossing the axis of the bolt 3. The access to the head 31 and the nut 4 of the bolt 3 from the direction along the axial center of the bolt can be made unnecessary, and the operation at the time of joining can be performed very easily.

  Since the nut 4, the holder 71 that rotatably holds the nut 4, and the nut unit 7 having the operation receiving portion are held by the frame material 1 so as not to move in the axial direction of the bolt 3. The nut 4 can be handled together with the nut unit 7, and the nut unit 7 is held in the frame material 1 so as not to move in the axial direction of the bolt 3, so that the frame material 1 and the corner member 2 can be tightly coupled. By doing so, the operation of holding the nut 4 on the frame member 1 can be easily performed.

  The frame material 1 is a pipe and has a nut unit insertion hole through which the nut unit 7 can be inserted, and the holder 71 of the nut unit 7 forms an axis so that the outer periphery of the end portion is the inner periphery of the nut unit insertion hole. Since the nut unit 7 is held on the frame member 1 by being in contact with the frame member 1, the configuration as described in the previous stage can be realized easily and with a small number of parts.

  Since the insertion member 11 provided inside the frame material 1 for positioning the nut unit 7 is provided, the nut unit 7 can be temporarily held via the insertion member 11 and the members are joined together. Work can be performed more easily.

  Next, a second embodiment of the present invention will be described. In addition, the same name and code | symbol are attached | subjected to the site | part corresponding to the thing in 1st Embodiment mentioned above.

  As shown in FIGS. 5, 6, and 7, the joint portion according to this embodiment is a part that joins the frame member 1 that is one member and the corner member 2 that is the other member.

  In this embodiment, it replaces with the nut 4, the operation reception part 5, the operation | movement conversion part 6, and the nut unit 7 in 1st Embodiment mentioned above, Nut A4, operation reception part A5, operation | movement conversion part A6, and nut unit A7 is adopted. Since each other member has the same configuration and function as those according to the first embodiment described above, the following description will mainly describe differences from the first embodiment.

  In the present embodiment, the nut A4 has a driven gear A4a similar to the nut 4 in the first embodiment described above, but the driven gear A4a is along a plane substantially orthogonal to the axis of the bolt 3. Are engraved. The nut A4 constitutes the nut unit A7. FIG. 8 shows an enlarged perspective view of the nut unit A7.

  On the other hand, as shown in FIG. 8, the nut unit A7 includes the nut A4, a holder A71 that rotatably holds the nut A4, and a shaft member A73 that is rotatably held by the holder A71. . Further, the outer periphery of the outer end of the nut unit A7 is brought into contact with the inner periphery of the through hole 1x of the frame material 1 serving as the nut unit holding hole, as in the first embodiment.

  The holder A71 is formed by combining two halves A711 and A711, and has a nut holding part A71a and a shaft member holding part A71b for holding the nut A4 and the shaft member A73 inside, and a bolt 3 Is provided with a bolt insertion hole A71y. In addition, the said nut holding | maintenance part A71a and the shaft member holding | maintenance part A71b are the cavities provided corresponding to the shape of the nut 4 and the shaft member A73, respectively in this embodiment. In FIG. 8, the holder A71 is indicated by an imaginary line. Further, in FIG. 8, the bolt 3 is also indicated by an imaginary line.

  As shown in FIG. 8, the shaft member A 73 has a tool receiving hole A 73 x as a tool receiving portion that can receive a hexagon wrench R as a tool and engage with the hexagon wrench R at the outer end thereof. The tool receiving hole A73x receives an operation of rotating the shaft member A73 via the hexagon wrench R around the operation axis LL that is the axis of the hexagon wrench R. The operation axis LL extends in a direction crossing the axis of the bolt 3. On the other hand, on the outer peripheral surface of the inner end of the shaft member A73, there is a drive side gear A73a that can mesh with the driven side gear A4a of the nut A4. In addition, a locking protrusion A731 that can be engaged with the holder A71 is provided at an intermediate portion in the longitudinal direction of the shaft member A73 so as to prevent the locking.

  In the present embodiment, the operation receiving portion A5 is a tool receiving hole A73x of the shaft member A73. That is, the hexagon wrench R is engaged with the tool receiving hole A73x, and an operation for rotating the hexagon wrench R around the operation axis LL is received. And when the said operation is received, the said shaft member A73 will rotate integrally, and it comprises so that operating force may be transmitted to the drive side gearwheel A73a distribute | arranged to the edge part on the opposite side of the said shaft member A73. .

  The motion conversion unit A6 includes the drive side gear A73a and the driven side gear A4a. That is, as shown in FIG. 8, the drive side gear A73a and the driven side gear A4a are engaged with each other. Specifically, the operation receiving portion A5, that is, the tool receiving hole A73x receives the operation force transmitted to the drive side gear A73a to the driven side gear A4a, thereby further transmitting the bolt 3 and the nut A4. Is converted to the action of rotating the.

  In this embodiment, the frame material 1 and the corner member 2 are joined by the same procedure as in the first embodiment described above except that a hexagon wrench R is used instead of the plus driver D.

  When the operation receiving unit A5 receives a rotating operation using the hexagon wrench R, as described above, the operating force is transmitted to the driving side gear A73a, and the driven side gear A4a of the nut A4 is driven by the driving side gear A73a. Is done. At that time, as described above, the nut A4 and the bolt 3 rotate relative to each other, and the nut A4 and the bolt 3 are screwed back and forth. That is, the operation conversion unit A6 functions. Then, the frame material 1 and the corner member 2 are coupled by the same action as that of the first embodiment. That is, when the operation converting portion A6 is operated and the nut A4 and the head portion 31 of the bolt 3 are moved relative to each other, the frame material 1 and the corner member 2 are also moved toward each other. When the distance between the nut A4 and the head 31 of the bolt 3 is further reduced, the joint portion 22 of the corner member 2 is inserted into the cavity 1s of the frame material 1, and the side end of the frame material 1 is It abuts on the step portion 23 of the corner member 2. When the driven side gear A4a of the nut A4 is further driven by the driving side gear A73a to the side where the nut 4 approaches the head portion 31 of the bolt 3, the head 31 of the bolt 3 and the bolt holder 8 are Since the outer periphery of the outer end of the nut unit A7 that is held by the corner member 2 and includes the nut A4 is in contact with the inner periphery of the through hole 1x of the frame material 1, the bolt 3 and the nut A4 Tightening force is generated between With this tightening force, the frame material 1 and the corner member 2 are tightened and joined.

  In the member joining structure according to the present embodiment, the configuration as described above is adopted, so that all the main effects according to the first embodiment can be realized and the following effects can be realized.

  That is, the operation conversion portion A6 is provided on the outer peripheral surface of the driven gear A4a that is a gear provided on the nut A4 and the inner end of the shaft member A73 extending in a direction intersecting the axis of the bolt 3. A driving side gear A73a having a pitch that can mesh with the gear A4a of A4, and the operation receiving portion A5 is provided at the outer end of the shaft member A73 and intersects the axis of the bolt 3 Since the tool accepting part A73x accepts the access of the hexagon wrench R from above, the member can be joined using the above-described hexagon wrench R that is difficult to mesh with the gear A4a.

  Further, since the gear A4a of the nut A4 is engraved along a surface substantially perpendicular to the axial center direction of the bolt 3, the driving side gear A73a and the driven gear are different from a mode using so-called bevel teeth. Even when the relative position with respect to the side gear A4 is deviated in the holder A71, the meshing state can be easily maintained, and the operation of joining the frame material 1 and the corner member 2 can be performed stably.

  The present invention is not limited to the embodiment described above.

  For example, in the embodiment described above, the gear is provided on the nut, but the gear may be provided on the head of the bolt.

  In addition, the operation receiving unit is not limited to one that receives an operation by a tool. For example, instead of the above-described shaft member tool receiving unit, the outer end of the shaft member protrudes outward beyond the outer surface of the frame member and is A dial portion that receives a manual operation may be provided by increasing the diameter of the protruding portion.

  On the other hand, in the second embodiment described above, instead of providing the shaft member A5, insertion of a tool having a drive side gear meshable with the driven side gear A4a of the nut A4 from the direction crossing the axial direction of the bolt. Is provided with a tool receiving hole, and a motion converting portion is provided by using the driven side gear A4a of the nut A4, and the driving side gear of the tool and the driven side gear A4a of the nut A4 are engaged with each other. A mode in which the function is also conceivable. If such an aspect is adopted, the driven side gear A4a of the nut A4 is engraved along a surface substantially perpendicular to the axial direction of the bolt 3, so that the drive side gear of the tool is operated during operation. Between the nut A4 and the gear A4a of the nut A4 does not occur in the direction in which the tool is pushed out. Therefore, it is possible to prevent the occurrence of a problem that the tool is pushed out by the interaction between the nut and the tool.

  In addition, in the above-described embodiment, the joining of the frame member and the corner member is described. However, if the joining structure of the member according to the present invention is a part where two members are joined, the combination of the two members is this. Not limited to. For example, the joining structure of the members as described above is adopted for joining the first frame member in the shape of a pipe and the second frame member having a corner portion which is solid and has the same configuration as the corner member described above at the end portion. Of course, as long as it is a part which joins two members, it may be adopted as other parts.

  Moreover, the joining structure of the members according to the present invention includes a frame material that constitutes a top plate support that supports the top plate of furniture with a top plate, and a corner member that constitutes the top plate support and couples the frame materials to each other. Can be suitably used as a joint between a frame member constituting the frame of the panel and a corner member joining the frame members to each other, but joining between other members constituting furniture, etc. Of course, it may be adopted for the department.

  In addition, various changes may be made without departing from the spirit of the present invention.

The disassembled perspective view which shows the joining structure of the member which concerns on 1st Embodiment of this invention. Sectional drawing which cut | disconnected and showed the junction part of the member which concerns on the embodiment at the center of the width direction of a frame material. Sectional drawing which cut | disconnected and showed the junction part of the member which concerns on the same embodiment in the thickness direction center of a frame material. The top view and front view which show the nut which concerns on the same embodiment. The disassembled perspective view which shows the joining structure of the member which concerns on 2nd Embodiment of this invention. Sectional drawing which cut | disconnected and showed the junction part of the member which concerns on the embodiment at the center of the width direction of a frame material. Sectional drawing which cut | disconnected and showed the junction part of the member which concerns on the same embodiment in the thickness direction center of a frame material. The perspective view which shows the nut unit which concerns on the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Frame material 2 ... Corner member 3 ... Bolt 4, A4 ... Nut 5, A5 ... Operation reception part 6, A6 ... Motion conversion part

Claims (13)

A bolt and a nut screwed to the bolt are rotated relative to each other so that the bolts and the nuts are screwed back and forth, and two members are tightened and coupled using the bolts and nuts. An operation receiving unit that receives an external rotation operation around an operation axis that extends in a direction intersecting the axis, and an operation conversion unit that converts the operating force received by the operation receiving unit into a relative rotation between the bolt and the nut. And a joining structure for members. 2. The member joining structure according to claim 1, wherein the operation accepting portion is a tool accepting portion that allows the tool to be accessed from a direction intersecting with the axis of the bolt. The member joining structure according to claim 1, wherein the motion conversion unit is configured using a gear provided on the nut. The motion conversion unit is provided with a gear that can mesh with a gear-shaped portion provided on the tool, and the operation receiving unit inserts the tool from the direction intersecting the axis of the bolt. 4. The member joining structure according to claim 3, wherein the member is a tool holding hole for holding the tool at a position where the gear-like portion of the tool can be engaged with the gear of the nut. A pitch at which the motion converting portion is provided on the outer peripheral surface of the inner end of a driven gear, which is a gear provided on the nut, and extends in a direction crossing the axis of the bolt, and can be meshed with the gear of the nut. And the operation receiving portion is a tool receiving portion that is provided at an outer end of the shaft member and receives access to the tool from a direction intersecting the axis of the bolt. The member joining structure according to claim 3. The member joining structure according to claim 3, 4 or 5, wherein a gear is engraved on the nut along a surface substantially orthogonal to the axial direction of the bolt. The nut is held by one member, and the other member accepts insertion of the bolt head from the direction intersecting the axis of the bolt and holds the bolt head in a non-rotatable manner. The member joining structure according to claim 3, 4, 5, or 6, wherein a part is provided. The nut, a holder for rotatably holding the nut, and a nut unit having the operation receiving portion are held in one member so as not to move in the axial direction of the bolt. 7. A joining structure of members according to 7. The one member is pipe-shaped and has a nut unit insertion hole through which the nut unit can be inserted, and the holder of the nut unit forms an axial shape so that the outer periphery of the end abuts the inner periphery of the nut unit insertion hole 9. The member joining structure according to claim 8, wherein the nut unit is held by the one member. The member joining structure according to claim 8 or 9, further comprising an insertion member provided inside the one member for positioning the nut unit. The member joining structure according to claim 1 or 2, wherein the motion conversion unit is configured by using a gear provided on a head of the bolt. The motion converting portion is provided with a gear that can mesh with a gear-like portion provided on the tool at the head of the bolt, and the operation receiving portion is in the direction intersecting the axis of the bolt. 12. The member joining structure according to claim 11, wherein the member is a tool holding hole for receiving the insertion of the tool and holding the tool at a position where the gear-like portion of the tool can be engaged with the gear on the head of the bolt. The motion converting portion is provided on the outer peripheral surface of the driven gear, which is a gear provided at the head of the bolt, and the inner end of the shaft member extending in a direction crossing the axis of the bolt. A drive-side gear having a pitch that can mesh with the gear, and the operation receiving portion is provided at an outer end of the shaft member to access the tool from a direction intersecting the axis of the bolt. It is a tool reception part which receives, The joining structure of the member of Claim 11 characterized by the above-mentioned.

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