JP4674341B2 - Nut support structure - Google Patents

Description

  In the present invention, when a plurality of members are coupled using a male screw member such as a bolt and a nut that can be screwed to the male screw member and supported by the attached member, the nut is attached to the attached member. The present invention relates to a nut support structure to be supported.

Various methods have heretofore been considered as methods for joining long members. As one of them, a configuration in which a rod-shaped nut is supported on one member and a male screw member is screwed onto the nut from the other member side is considered. (For example, see Patent Document 1.)
JP 2004-205032 A

  In the configuration described in Patent Document 1, the nut is formed in a columnar shape. However, in order to prevent such a nut from being detached when the nut is supported by a member to be attached, conventionally, the nut is provided with an E ring or the like. A groove for mounting the retaining member is formed. And after attaching a nut to a to-be-attached member, the retaining member is attached to the said groove | channel, and the retaining of a nut is implement | achieved.

  However, in such a configuration, a special member such as an E-ring is required to prevent it from coming off, and the nut side needs to be configured so that such a member can be attached.

  The present invention is configured to solve such problems and to support the nut to the attached member with a simple configuration.

  That is, the nut support structure according to the present invention includes a mounted member having at least two wall portions opposed to each other, and is inserted from a direction substantially orthogonal to the wall portion of the mounted member and supported by at least two of the wall portions. A shaft-shaped nut, a nut insertion hole that is inserted between the two wall portions of the mounted member and through which the shaft-shaped nut can be inserted, and a screw through which a male screw to be screwed into the shaft-shaped nut is inserted And an insertion member having an insertion space, wherein the insertion member further includes a retaining portion for retaining the shaft nut.

  In such a case, since the insertion member has a retaining portion, it is not necessary to perform special processing on the attached member side, and the attached member has a simple shape for inserting and supporting a nut. It is only necessary to provide a hole. That is, the structure which supports a nut to a to-be-attached member by simple structure is realizable.

  Further, as a configuration in which the nut is supported by the mounted member with a simple configuration, there is a configuration in which the insertion member further includes a rotation preventing portion that prevents the nut from rotating. This is because it is not necessary to form a detent such as a D-shaped hole in the attached member.

  As one aspect for concretely realizing the nut support structure described above, the shaft-like nut has a circular cylindrical section, and a D-shaped cross section provided continuously from the cylindrical section. A cross-sectional portion and an engaging step portion located at a boundary between the cylindrical portion and the D-shaped cross-sectional portion, and the engagement step portion of the insertion member are engaged with the engaging step portion. Can be mentioned.

  In particular, if the female screw portion is provided in the radial direction from the flat surface portion of the D-shaped cross-section portion, this is compared with the embodiment in which the female screw portion is provided in the radial direction on the shaft nut that is formed in a cylindrical shape as a whole. Such an internal thread part can be formed easily.

  In addition, if the flat portion of the D-shaped cross-section faces the opposite direction to the screw insertion space, the tightening force between the male screw is received by substantially the entire outer periphery other than the flat portion of the D-shaped cross-sectional portion. Thus, it is possible to stably connect the attached member and the member to be connected to the attached member.

  A groove is provided on one outer side of the two wall portions of the mounted member, and a shaft-shaped nut passes through the two wall portions of the mounted member, and the shaft If the entire nut is positioned inside the wall portion where the groove portion is provided on the outside, the shaft-shaped nut is an optional member while the optional member is slidably supported in the groove portion. The shaft-like nut can be supported by the attached member without failing to prevent the sliding movement of the shaft. Note that “the entire shaft-shaped nut is positioned inside the wall portion where the groove portion is provided outward” means that the outer surface of the shaft-shaped nut is flush with the outer surface of the wall portion. It is a concept that includes

  Moreover, as one aspect that can reduce the labor of attaching the nut, the insertion member includes the nut insertion hole, the screw insertion space that communicates with the nut insertion hole, and both side edges in the width direction of the screw insertion space, respectively. And a pair of leg portions that are formed and elastically deformable. This is because the insertion member can be temporarily held on the mounted member by using elastic force.

  As an aspect for realizing the nut support structure described above with a simple structure, there is an example in which an engagement claw as the retaining portion is provided inside the engagement hole of the insertion member.

  In particular, if the engaging claw can be elastically retracted toward the outside of the nut insertion hole, the engaging claw is elastically retracted during the attaching operation of the shaft nut, and the engaging claw of the shaft nut is When the part that can be engaged with reaches the part that opposes the engaging claw, it is possible to realize a configuration in which the engaging claw is engaged with the part by elastic force.

  Moreover, if it has the structure which can access the said engagement nail | claw via the said screw insertion space and the internal thread part of a shaft-shaped nut, and can cancel | release the engagement state of this engagement claw and the said shaft-shaped nut Such a shaft nut can be easily removed.

  Further, as a configuration of the insertion member that can effectively temporarily hold the shaft-shaped nut, the engaging claw is provided with a rotation-preventing portion that contacts the shaft-shaped nut and prevents the shaft-shaped nut from rotating. It is done.

  If the nut support structure according to the present invention is adopted, the insertion member has a retaining portion, so that it is not necessary to perform special processing on the attached member side, and the attached member is supported by inserting a shaft-like nut. It is only necessary to provide a simple hole for this purpose. That is, the structure which supports a shaft-shaped nut on a to-be-attached member by simple structure is realizable.

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

  In the furniture with a top plate of this embodiment, as shown in FIGS. 1, 2, and 3, the top plate 2 and the drawer 3 that are moving bodies are mutually independent of the top plate support 1 that is a structure. It is supported so that it can slide.

  More specifically, the top plate 2 is a thin plate having a thickness dimension of about 10 mm, and slides forward as shown in FIG. 2 to open the back region 1B of the top plate support 1 upward. It is possible to move between a forward slide position 2F that moves and a rear slide position 2B (normal use position) that slides backward as shown in FIG. 1 and closes the back area 1B.

  As shown in FIG. 3, the drawer 3 is slid forward to open the internal space upward, and the rear slide position 3F is slid backward to close the internal space as shown in FIG. It can move between position 3B (normal use position). The depth of the drawer 3 is set to about half of the depth of the top plate 2, and a fixed tray 8 is provided behind the drawer 3.

  The structure in which the top plate 2 and the drawer 3 are supported by the top plate support 1 is described in detail in the specification of Japanese Patent Application No. 2004-289438, etc. by the present applicant.

  As shown in FIG. 4, the top plate support 1 is configured such that the left and right legs 1a and 1a are connected by a rear horizontal member 11 and an intermediate horizontal member 12, and the upper end of the front edge is opened. ing. The leg 1a and the rear horizontal member 11 are connected via first holding means H1 as shown in an exploded perspective view in FIG. Moreover, the leg part 1a and the intermediate horizontal member 12 are connected via the 2nd holding means H2 which shows an exploded perspective view in FIG.

  The leg portion 1a has a gate shape in which a pair of support columns 13 and 13 are connected by a side frame member 14. The rear end portion of the side member 14 and the column 13 are connected via the first holding means H1. That is, the rear horizontal member 11, the side frame member 14, and the support column 13 are connected via the first holding means H1. On the other hand, the front end of the side frame member 14 and the column 13 are connected via third holding means H3 as shown in an exploded perspective view in FIG.

  Each of the rear horizontal member 11, the intermediate horizontal member 12, and the side horizontal member 14 is formed by extrusion of aluminum, and is constituted by a frame member F having the same cross-sectional shape over substantially the entire longitudinal dimension. Yes. As shown in FIGS. 5 to 7, the frame material F includes a bottom wall F1 constituting a bottom surface, a back wall F2 rising from one side edge of the bottom wall F1, and a bottom wall from the upper end of the back wall F2. A top wall F3 extending parallel to the wall F1 and constituting an upper surface; an upper front wall F4 hanging from the other side edge of the top wall F3; a lower front wall F5 rising from the other side edge of the bottom wall F1; The first to third intermediate walls F6 to F8 are arranged in a space defined by the bottom wall F1, the back wall F2, the top wall F3, the upper front wall F4, and the lower front wall F5. In the top wall F3, the height position of the front portion F3a that is a portion on the upper front wall F4 side is higher than the height position of the rear portion F3b that is a portion on the back wall F2 side. Connected by F3c. The first intermediate wall F6 is provided in parallel with the back wall F2 so as to be continuous with the upright portion F3c of the top wall F3. The second intermediate wall F7 is erected from a portion between the first intermediate wall F6 and the lower front wall F5 and provided in parallel with the first intermediate wall F6. The third intermediate wall F8 is provided in parallel with the bottom wall F1 so as to be continuous with the rear portion F3b of the top wall F3. Further, the frame material F is provided with a horizontal groove f as a groove defined by the bottom wall F1, the upper front wall F4, the lower front wall F5, the second intermediate wall F7, and the third intermediate wall F8. Provided. That is, the horizontal groove f is formed outside the second intermediate wall F7. The frame members F and F constituting the rear horizontal member 11 and the intermediate horizontal member 12 and the frame members F and F constituting the side member 14 on both the left and right sides are provided with horizontal grooves f and f. They are arranged facing each other.

  Moreover, the said support | pillar 13 is formed by aluminum extrusion molding, and has the same cross-sectional shape over the substantially whole area of a longitudinal dimension. Specifically, as shown in FIG. 5, the outer surface of the support column 13 is formed, a peripheral wall portion 131 having a square shape in a cross-sectional view, and a central body 132 having a cylindrical shape located at a central portion in the cross-sectional view. And a rib 133 that protrudes inward from the peripheral wall portion 131 in a direction along a diagonal line of the peripheral wall portion 131 and that connects the peripheral wall portion 131 and the central body 132. And the internal thread part 13a is formed in the center part of an upper end surface. The female thread portion 13a is formed by tapping the inner surface of the central body 132. That is, the female thread portion 13 a extends in the longitudinal direction of the support column 13. Further, the upper end portion of the support column 13 is located above the outer peripheral wall having the outward facing surface of the furniture with the top plate by a predetermined dimension that is shorter than the length of one side of the rear horizontal member 11 than the other portions. Protruding. And the corner member attachment space 13s which is a connection member attachment space is formed in the area | region divided by the part which the said outer peripheral wall protrudes upwards.

  Thus, as shown in FIGS. 5, 8, and 9, the first holding means H <b> 1 includes the rear horizontal member 11 that is a mounted member, the side frame member 14 that is a mounted member, and the A first corner member 4 that is a connecting member for connecting the column 13, shaft-shaped nuts 5, 5 that are respectively supported by the rear horizontal member 11 or the side member 14, and the shaft-shaped nuts 5, 5 Male screw members v, v formed by screwing, and insertion members 6 inserted between the first and second intermediate walls F6, F7 of the rear horizontal member 11 and the side frame member 14, respectively. 6. Here, the rear horizontal member 11 and the side frame member 14 have a function as a first frame in the claims, and the column 13 has a function as a second frame in the claims. 8 is a cross-sectional view showing the main part of the first holding means H1, and FIG. 9 is a cross-sectional view taken along the line AA in FIG.

  More specifically, as shown in FIGS. 5 and 8, the first corner member 4 is connected to a main body 41 disposed in the corner member mounting space 13 s and above the main body 41. And a flange portion 42 having the same width and depth dimensions as those of the cross section.

  The main body 41 has a lateral contact surface 4 b that can contact the end surface of the rear horizontal member 11 and a vertical contact surface 4 c that can contact the end surface of the side frame member 14. The horizontal contact surface 4b is provided with a horizontal screw insertion hole 4b1 penetrating in the width direction. The vertical contact surface 4c is provided with a horizontal screw insertion hole 4c1 penetrating in the depth direction. Further, the head of the screw member v with a bottom is provided in a direction along the horizontal screw insertion holes 4b1 and 4c1 from the surface that contacts the support column 13, that is, the surface opposite to the lateral contact surface 4b and the vertical contact surface 4c. Insertable countersink holes 4b2 and 4c2 are provided, respectively. The bottoms of the counterbore holes 4b2 and 4c2 are disposed closer to the lateral contact surface 4b and closer to the vertical contact surface 4c than the center in plan view so as to avoid interference between the screw members. That is, in this embodiment, these countersunk holes 4b2, 4c2 intersect. Further, although not shown, a groove portion having a shape corresponding to the shape of the rib 133 and the central body 132 of the support column 13 is provided at the bottom, and the rib portion and the rib 133 and the central body 132 of the support column 13 are engaged with each other. By doing so, positioning is performed. In addition, from the horizontal contact surface 4b and the vertical contact surface 4c, the horizontal groove f of the rear horizontal member 11 and the side frame member 14, the space between the back wall F2 and the first intermediate wall F6, and A positioning projection 43 is provided so as to protrude into the space above the third intermediate wall F8.

  The flange portion 42 has a downward contact surface 4a that can contact the upper surface of the support column 13, and a vertical screw insertion hole 4a1 penetrating in the vertical direction from the center portion and a head of the screw member with a bottom. An insertable countersink hole 4a2 is provided. Further, in order to make the upper surface of the flange 42 the same as the upper surfaces of the rear horizontal member 11 and the side frame member 14, the front portion of the top wall F3 of the rear horizontal member 11 and the side frame member 14 is provided. An upper protrusion 421 is provided at a portion corresponding to F3a.

  As shown in FIGS. 10 to 12, the shaft-shaped nut 5 includes a cylindrical portion 51 having a circular cross section, a D-shaped cross-section portion 52 having a D-shaped cross section, and the cylindrical portion 51 and the D-shaped cross-section portion 52. And an internal thread portion 5x provided in the radial direction from the flat surface portion 52a of the D-shaped cross-section portion 52. The shaft-shaped nut 5 includes nut mounting holes F6a formed in the first and second intermediate walls F6 and F7 of the rear horizontal member 11, the intermediate horizontal member 12, and the side horizontal member 14, respectively. It is inserted into F7a and supported by these first and second intermediate walls F6, F7.

  On the other hand, the insertion member 6 is a plate-like member formed entirely of resin, and as shown in FIGS. 13 to 17, a base portion 61 and a pair of leg portions 62 provided extending from the base portion 61. 62, a nut insertion hole 6x that is defined by the base 61 and the legs 62, 62 and through which the shaft nut 5 can be inserted, and is located between the legs 62, 62 and communicates with the nut insertion hole 6x. A screw insertion space 6y and an engagement claw 63 as a retaining portion that extends from the base portion 61 toward the nut insertion hole 6x and abuts against the engagement step portion 53 of the shaft-shaped nut 5 to prevent it from coming off. It has.

  At the tip of the leg 62, there is a member to be attached, specifically, a positioning hole Fa formed in the bottom wall F1 and the third intermediate wall F8 of the rear horizontal member 11 and the side frame member 14, respectively. In addition, a positioning portion 621 for positioning the insertion member 6 in the thickness direction is formed to protrude outward.

  The engaging claw 63 is inclined from the base portion 61 toward the center of the nut insertion hole 6x, and a connecting portion 632 extending from the base portion 61 toward the center of the nut insertion hole 6x. And an engaging portion 631 extending. The engaging portion 631 is configured to elastically retract in a direction toward the outside of the nut insertion hole 6x when the cylindrical portion 51 of the shaft-shaped nut 5 is inserted into the nut insertion hole 6x. Here, the distal end of the engagement portion 631 is configured so that various option members and the like can be slidably held in the horizontal groove f so that the shaft nut 5 does not protrude into the horizontal groove f. The end surface of the D-shaped cross section 52 of the shaft-shaped nut 5 is in the second intermediate wall F7 in a state where the tip of the engaging portion 631 is engaged with the engagement step portion 53 of the shaft-shaped nut 5. It is set to a position that is flush with the surface. In addition, the engaging portion 631 is provided with a convex portion 633 that protrudes toward the center of the nut insertion hole 6x. The convex portion 633 functions as an anti-rotation portion that comes into contact with the flat surface portion 52 a of the D-shaped cross-section portion 52 of the shaft nut 5 and prevents the shaft nut 5 from rotating. The planar portion 52a faces the opposite direction to the screw insertion space 6y in a state where the convex portion 633 and the planar portion 52a are in contact with each other.

  In addition, the screw insertion space 6y is in the same direction as the female screw portion 5x of the shaft nut 5 in a state where the engagement claw 63 and the engagement step portion 53 of the shaft nut 5 are engaged. Stretch. At this time, the engaging claw 63 can be accessed from the outside of the mounted member, that is, the rear horizontal member 11 or the side frame member 14 through the screw insertion space 6y and the female screw portion 5x of the shaft nut 5. I have to.

  The connection of the rear horizontal member 11, the side member 14, and the column 13 by the first holding means H1 is performed as follows. First, the insertion member 6 is inserted into the space between the walls of the rear horizontal member 11 and the side frame member 14 from the base 61 side. Next, the shaft nut 5 is inserted into the nut holding holes F6x and F7x formed in the rear horizontal member 11 and the side frame member 14 from the cylindrical portion 51 side, and the engaging claws 63 of the insertion member 6 are engaged. The engaging portion 631 is engaged with the engaging step portion 53 of the shaft nut 5. At this time, the shaft-shaped nut 5 passes through the first and second intermediate walls F6, F7, and the entire shaft-shaped nut 5 is located inside the second intermediate wall F7. Further, the male screw members v and v are inserted into the horizontal screw insertion holes 4 b 1 and 4 c 1 of the first corner member 4, and the male screw members v and v are inserted into the screw insertion space 6 y of the insertion member 6. To the female screw portions 5x and 5x of the shaft-shaped nuts 5 and 5, and between the head v1 of the male screw member v and the end surface of the rear horizontal member 11 and the head v1 of the male screw member v by tightening force. The first corner member 4 is sandwiched between the first corner member 4 and the end surface of the side member 14. The downward contact surface 4 a is brought into contact with the upper end of the support column 13, and the male screw member v is screwed into the female screw hole 13 a of the support column 13 in this state.

  On the other hand, as shown in FIG. 6, the second holding means H2 includes a holding nut 121 inserted into the slit 14s of the side frame member 14, the intermediate horizontal member 12 as the attached member, and the holding nut 121. A connecting member 122 interposed therebetween, a shaft-shaped nut 5 supported by the first and second intermediate walls 126, 127 of the intermediate horizontal member 12, and screwed to the shaft-shaped nut 5. A male screw member v, an insertion member 6 inserted between the first and second intermediate walls F6 and F7 of the intermediate horizontal member 12, and a female screw portion 5x formed on the holding nut 5. And a male screw member v formed by screwing.

  The holding nut 121 has a short side dimension that can be inserted into the horizontal groove f of the side frame member 14 and a long side dimension that substantially matches the width dimension of the horizontal groove f, and a female screw hole at the center. R is provided at two corners located on a diagonal line. On the other hand, the connection member 122 includes a main body 122a and an attachment portion 122b provided extending from the main body 122a in the width direction. The main body 122a has a cross-sectional shape corresponding to the intermediate horizontal member 12, and includes a first screw insertion hole 122x extending in a longitudinal direction from a contact surface that contacts the intermediate horizontal member 12. The male screw member v is inserted through the first screw insertion hole 122x. Further, a countersink hole 122y is provided concentrically with the first screw insertion hole 122x from the side in contact with the side frame member 14, and the head v1 of the male screw member v is provided at the bottom of the countersink hole 122y. It is made to contact. The main body 122a is provided with a positioning groove 122c that can be inserted into the horizontal groove f of the intermediate horizontal member 12 and the space between the first intermediate wall F6 and the back wall F2. On the other hand, the mounting portion 122b regulates the back and forth movement of the holding nut in a state where the mounting portion 122b is inserted into the second screw insertion hole 122z through which the male screw member v can be inserted and the horizontal groove f of the side member 14. And a protrusion 122d.

  The shaft nut 5 and the insertion member 6 have the same configuration as that in the first holding means H1. Further, the shaft nut 5 is sequentially inserted into a nut insertion hole F7x formed in the second intermediate wall F7 of the side member 14 and a nut insertion hole F6x formed in the first intermediate wall F6. ing. The insertion member 6 is inserted into the space between the first and second intermediate walls F6 and F7 of the intermediate horizontal member 12 from the base 61 side.

  The connection of the intermediate horizontal member 12 and the side member 14 by the first holding means H2 is performed as follows. First, the insertion member 6 is inserted into the space between the walls of the intermediate horizontal member 12 from the base 61 side. Next, the shaft-like nut 5 is inserted into the nut holding holes F6x and F7x formed in the intermediate horizontal member 12 from the cylindrical portion 51 side, and the engaging portion 631 of the engaging claw 63 of the inserting member 6 and the shaft The engaging step 53 of the nut 5 is engaged. At this time, the shaft-shaped nut 5 passes through the first and second intermediate walls F6, F7, and the entire shaft-shaped nut 5 is located inside the second intermediate wall F7. Further, the male screw member v is inserted into the first screw insertion hole of the connecting member 122, the male screw member v is inserted into the screw insertion space 6 y of the insertion member 6, and the female screw portion of the shaft-shaped nut 5 is inserted. The connection member 122 is clamped between the head v1 of the male screw member v and the end surface of the intermediate horizontal member 12 by tightening force. Then, the male screw member v is inserted into the second screw insertion hole 122z of the mounting portion 122b and screwed to the holding nut 121.

  Further, as shown in FIG. 7, the third holding means H3 includes the second corner member 7 as a connecting member for connecting the side frame member 14 and the support column 13 as attachment members, and the side frame member. A shaft-shaped nut 5 supported on the first and second intermediate walls 14, a male screw member v screwed onto the shaft-shaped nut 5, and the two wall portions of the side frame member 14. And an insertion member 6 inserted therebetween.

  The second corner member 7 includes a main body 71 disposed in the corner member mounting space 13s, and a flange portion connected to the upper side of the main body 71 and having the same width and depth dimensions as the transverse cross section of the leg support 3. 72 integrally.

  The main body 71 has a longitudinal contact surface 7 c that can contact the end surface of the side member 14. The vertical contact surface 7c is provided with a horizontal screw insertion hole 7c1 penetrating in the depth direction. Further, a counterbore hole 7c2 is provided in which a head of a screw member can be inserted with a bottom in a direction along the horizontal screw insertion hole 7c1 from a surface opposite to the vertical contact surface 7c. The bottom of the counterbore 7c2 is disposed closer to the vertical contact surface 7c than the center in plan view to avoid mutual interference of the screw members. Although not shown, a groove having a shape corresponding to the shape of the rib 133 and the central body 132 of the support column 13 is provided at the bottom, and the groove 133 is engaged with the rib 133 and the central body 132 of the support column 13. By doing so, positioning is performed. In addition, from the horizontal contact surface 4b and the vertical contact surface 4c, the horizontal groove f of the rear horizontal member 11 and the side frame member 14, the space between the back wall F2 and the first intermediate wall F6, and A positioning projection 73 is provided so as to protrude into the space above the third intermediate wall F8.

  On the other hand, the flange portion 72 has a downward contact surface 7a that can contact the upper surface of the support column 13, and a vertical screw insertion hole 7a1 penetrating in the vertical direction from the center portion and a bottom of the screw member at the bottom. An insertable counterbore 7a2 is provided. Further, an upper protrusion 721 is provided at a portion corresponding to the front portion F3a of the top wall F3 of the side frame member 14 so that the upper surface of the flange portion 72 is flush with the upper surface of the side frame member 14.

  The shaft nut 5 and the insertion member 6 have the same configuration as that in the first holding means H1. The shaft nut 5 is sequentially inserted through a nut insertion hole F7x formed in the second intermediate wall F7 of the side frame member 14 and a nut insertion hole (not shown) formed in the first intermediate wall F6. I have to. The insertion member 6 is inserted into the space between the first and second intermediate walls F6 and F7 of the side member 14 from the base 61 side.

  The side holding member 14 and the column 13 are connected by the third holding means H3 as follows. First, the insertion member 6 is inserted into the space between the wall portions of the side member 14 from the base 61 side. Next, the shaft nut 5 is inserted into the nut holding holes F6x and F7x formed in the side frame member 14 from the cylindrical portion 51 side, and the engagement claw 63 of the insertion member 6 and the shaft nut 5 are engaged. The stepped portion 53 is engaged. At this time, the shaft-shaped nut 5 passes through the first and second intermediate walls F6, F7, and the entire shaft-shaped nut 5 is located inside the second intermediate wall F7. Further, the male screw member v is inserted into the horizontal screw insertion hole 7 b 1 of the second corner member 7, and the male screw member v is inserted into the screw insertion space 6 y of the insertion member 6. The second corner member 7 is sandwiched between the head v1 of the male screw member v and the end surface of the side frame member 14 by screwing on the female screw portion 5x. The downward contact surface 4 a is brought into contact with the upper end of the support column 13, and the male screw member v is screwed into the female screw hole 13 a of the support column 13 in this state.

  As described above, in any of the first to third holding means H1 to H3, when the male screw member is screwed to the shaft-shaped nut 5, the shaft-shaped nut 5 is attached to the insertion member 6 by the tightening force and then the horizontal member 11 is attached. The intermediate horizontal member 12 or the side intermediate member 14 is drawn to the first and second intermediate walls F6 and F7. The first and second intermediate walls F6 and F7 of the rear horizontal member 11, the intermediate horizontal member 12, or the side frame member 14 support the shaft nut 5. The head v1 of the male screw member v that is screwed onto the shaft-like nut 5 has a column 13 for the first holding means H1 and the third holding means H3, and a side frame for the second holding means H2, in order to adjust the appearance. It is concealed by the material 14.

  If the structure of this embodiment is employ | adopted, the engagement nail | claw 63 is provided in the insertion member 6, and this engagement nail | claw 63 is engaged with the engagement step part 53 of the shaft-shaped nut 5, and this shaft-shaped nut 5 is prevented from coming off. Since the rear member 11, the intermediate member 12, and the side member 14 to which the insertion member 6 is attached are simply provided with circular nut insertion holes F6x and F7x, There is no need to perform special processing for preventing the shaft nut 5 from coming off. That is, the shaft-like nut 5 can be supported by the rear horizontal member 11, the intermediate horizontal member 12, and the side member 14 with a simple configuration.

  Furthermore, the engaging claw 63 of the insertion member 6 is provided with a convex portion 633, and the flat portion 52a of the shaft-shaped nut 5 is brought into contact with the convex portion 633 to prevent rotation, so that the nut insertion hole F6x , It is not necessary to devise a shape to prevent rotation on the F7x side, and these nut insertion holes F6x and F7x can be formed in a circular shape. Then, the shaft-shaped nut 5 can be temporarily temporarily held effectively by preventing the projection 633 from rotating.

  The axial nut 5 has a circular cross-section of the cylindrical portion 51, a D-shaped cross-sectional portion 52 having a D-shaped cross-section provided continuously from the cylindrical portion 51, and the cylindrical portion 51 and the D-shaped cross-sectional portion. 52, the engaging step portion 53 is located at the boundary with the engagement member 63, and the engaging claw 63 of the insertion member 6 and the engaging step portion 53 are engaged with each other. In addition, since the engaging claw 63 is accessible through the screw insertion space 6y and the female screw portion 5x of the shaft-like nut 5, the engagement claw 63 and the engaging step portion 53 are engaged. The shaft nut 5 can be easily removed and released.

  In addition, the flat portion 52a is directed in the opposite direction to the screw insertion space 6y in a state where the convex portion 633 and the flat portion 52a are in contact with each other. The force can be received by substantially the entire outer periphery of the shaft-shaped nut 5 except for the flat surface portion 52a of the D-shaped cross section 52, and in the mounted member, that is, in the first holding means H1, the rear horizontal member 11 and the side portion The frame member 14, the intermediate horizontal member 12 in the second holding means H2, the side member 14 in the third holding means H3, and the counterpart member connected to the mounted member, that is, the first corner member in the first holding means H1. 4. The connection member 122 can be stably connected to the second holding means H2, and the second corner member 7 can be stably connected to the third holding means H3.

  Since the engaging claw 63 can be elastically retracted toward the outside of the nut insertion hole 6x, the engaging claw 63 is elastically retracted during the attaching operation of the shaft-shaped nut 5, and the engaging claw of the shaft-shaped nut 5 is recovered. A configuration in which the engaging claw 63 is engaged with the engaging step portion 53 by an elastic force when the portion that can be engaged with the engaging portion 63, that is, when the engaging step portion 53 reaches a portion facing the engaging claw 63 can be realized. .

  Further, since the female screw portion 5x is provided in the radial direction from the flat surface portion 52a of the D-shaped cross-section portion 52, the shaft nut is formed in a shaft shape, which is formed in a columnar shape as a whole. The internal thread portion 5x of the nut 5 can be easily formed.

  In addition, the insertion member 6 forms a pair of elastically deformable members by forming the nut insertion hole 6x, the screw insertion space 6y communicating with the nut insertion hole 6x, and both side edges in the width direction of the screw insertion space 6y. The leg portions 62, 62 of the insertion member 6 are temporarily attached to the rear horizontal member 11, the intermediate horizontal member 12, and the side frame member 14 by using elastic force. It is possible to reduce the labor required for attaching the shaft-shaped nut 5.

  Since the engaging claw 63 is provided inside the nut insertion hole 6x of the insertion member 6, the nut support structure described above can be realized with a simple structure.

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

  For example, such a nut support structure is not limited to the leg structure of furniture with a top plate, and can be widely used for connection portions between frame members, such as connection portions of frame bodies of panels, for example.

  Further, in the above-described embodiment, the female screw hole of the shaft-like nut extends in the longitudinal direction of the attached member, but an aspect as shown in FIG. 18 is also conceivable. In this aspect, the first frame member X1, which is a mounted member formed using a square pipe, is used for connection to the second frame member X2 having the same cross-sectional shape as the first frame member. The second frame member X2 is provided with a screw mounting portion X21 having a screw support surface X21a capable of contacting the head v1 of the male screw member v, and should be screwed to the male screw member v. The shaft nut 5 having the female screw portion 5x is supported by the first frame member X1 as follows. That is, an insertion member X6 having a nut insertion hole X6x through which the shaft-like nut 5 can be inserted and a screw insertion space X6y through which the male screw member v is inserted is inserted into the first frame member X1, and the first frame A nut insertion hole (not shown) through which a shaft-like nut 5 provided in advance on both end faces of the member X1 can be overlapped with a nut insertion hole X6x of the insertion member X6. Thus, the shaft nut 5 is sequentially passed through the nut insertion hole on one end surface of the first frame member X1, the nut insertion hole X6x of the insertion member X6, and the nut insertion hole on the other end surface of the first frame member X1. . Then, an engaging claw X63, which is a retaining portion provided on the insertion member X6, is engaged with the engaging step portion 53 of the shaft-shaped nut 5. At this time, the shaft nut 5 is supported so that the female screw portion 5x of the shaft nut 5 extends in a direction inclined with respect to the longitudinal direction of the first frame member X1. In FIG. 18, one side wall of the first and second frame members X1 and X2 is removed. Even in such an aspect, since the engaging claw X63 as a retaining portion is provided on the insertion member X6, all the main effects according to the above-described embodiment can be obtained.

  Moreover, the shaft-shaped nut 5 does not necessarily need to penetrate two wall parts of a to-be-attached member, and you may make it penetrate only one wall part X1a. In this case, for example, as shown in FIG. 19 which is a yy cut end view of FIG. 18, the other wall portion X1b is provided with a bottomed nut receiving recess X1y into which the shaft nut 5 can be inserted. A shaft-like nut 5 penetrating a nut holding hole X1x provided in the wall portion X1a is inserted into the nut receiving recess X1y, and the shaft-like nut 5 is held on the end surfaces of the nut holding hole X1x and the nut receiving recess X1y. It is good to do so. Furthermore, as shown in FIG. 20 which is a diagram schematically showing a cross section cut along a direction orthogonal to the longitudinal direction of the member, the attached member includes a bottom wall FF1 constituting the bottom surface, and the bottom wall FF1. A back wall FF2 standing up from one side edge, a top wall FF3 extending in parallel with the bottom wall FF1 from the upper end of the back wall FF2 to form an upper surface, and an upper front wall FF4 depending from the other side edge of the top wall FF3 A lower front wall FF5 that stands up from the other side edge of the bottom wall FF1, and an intermediate wall FF6 that stands up from the bottom wall FF1 at an intermediate position between the back wall FF2 and the lower front wall F5. The above aspect may be adopted even in the case of the frame member FF. That is, as shown in FIG. 20, the intermediate wall FF6 that is one wall portion is provided with a nut holding hole FF6x that can penetrate the shaft-like nut 5, and the back wall FF2 that is the other wall portion is axially shaped. A bottomed nut receiving recess FF2x into which the nut 5 can be inserted may be provided, and the insertion member 6 may be inserted into the space between the intermediate wall FF6 and the back wall FF2. In this case, the shaft-like nut 5 penetrating the nut holding hole FF6x and the nut insertion hole (not shown in FIG. 20) of the insertion member 6 is inserted into the nut receiving recess FF2x, and the nut holding hole FF6x and the nut holding hole FF6x The shaft-like nut 5 may be held on the end face of the nut receiving recess FF2x.

  In addition, instead of the D-shaped cross-section portion of the shaft nut, a cut-away cross-section portion in which, for example, a U-shaped notch is formed in the cylinder may be provided continuously from the cylinder portion.

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

The perspective view which shows the furniture with a top plate which concerns on one Embodiment of this invention in the state which has a top plate in a back slide position. The perspective view which shows the furniture with a top plate which concerns on the embodiment in the state which has a top plate in a front slide position. The perspective view which shows the furniture with a top plate which concerns on the embodiment in the state which pulled out the drawer. The perspective view which shows the leg structure of the furniture with a top plate which concerns on the same embodiment. The disassembled perspective view which shows the 1st holding means of the furniture with a top plate which concerns on the embodiment. The disassembled perspective view which shows the 2nd holding means of the furniture with a top plate which concerns on the same embodiment. The disassembled perspective view which shows the 3rd holding means of the furniture with a top plate which concerns on the embodiment. The cross-sectional view which shows the principal part of the 1st holding means of the furniture with a top plate which concerns on the embodiment. AA sectional drawing in FIG. The top view which shows the axial nut which concerns on the same embodiment. The front view which shows the shaft-shaped nut which concerns on the same embodiment. The side view which shows the shaft-shaped nut which concerns on the same embodiment. The front view which shows the insertion member which concerns on the same embodiment. The side view which shows the insertion member which concerns on the same embodiment. The top view which shows the insertion member which concerns on the same embodiment. The rear view which shows the insertion member which concerns on the same embodiment. Xx sectional drawing in FIG. Schematic which shows the support structure of the nut which concerns on other embodiment of this invention. Yy sectional drawing in FIG. Schematic which shows the support structure of the nut which concerns on other embodiment of this invention.

Explanation of symbols

11 ... Rear horizontal member (attached member)
12 ... Intermediate horizontal member (attached member)
14 ... Side frame (attached member)
F6 ... 1st intermediate wall F7 ... 2nd intermediate wall 5 ... Shaft-shaped nut 6 ... Insertion member 63 ... Engagement claw 6x ... Nut insertion hole 6y ... Screw insertion space

Claims (11)

A to-be-attached member having at least two wall portions opposed to each other; a shaft-shaped nut inserted from a direction substantially perpendicular to the wall portion of the to-be-attached member and supported by at least two of the wall portions; A nut insertion hole that is inserted between the two wall portions of the member and into which the shaft nut can be inserted, and an insertion member having a screw insertion space for inserting a male screw to be screwed into the shaft nut. A nut support structure, wherein the insertion member further includes a retaining portion for retaining the shaft-shaped nut. The nut support structure according to claim 1, wherein the insertion member further includes a rotation preventing portion that prevents the nut from rotating. The shaft-like nut has a circular cylindrical section, a D-shaped cross-section having a D-shaped flat section continuously provided from the cylindrical section, and the cylindrical section and the D-shaped cross-section. The nut support structure according to claim 1, further comprising an engaging step portion positioned at a boundary, wherein the retaining portion of the insertion member is engaged with the engaging step portion. The nut support structure according to claim 3, wherein a female screw portion is provided in a radial direction from a flat portion of the D-shaped cross section. The nut support structure according to claim 3 or 4, wherein the flat portion of the D-shaped cross-section portion faces in a direction opposite to the screw insertion space. A groove is provided on one outer side of the two wall portions of the mounted member, and a shaft-shaped nut passes through the two wall portions of the mounted member, and the shaft 6. The nut support structure according to claim 1, wherein the entire nut is positioned inside a wall portion where the groove portion is provided outward. The insertion member includes the nut insertion hole, the screw insertion space that communicates with the nut insertion hole, and leg portions that form elastically deformable pairs by forming both side edges in the width direction of the screw insertion space. The nut support structure according to claim 1, 2, 3, 4, 5, or 6. The nut support structure according to claim 7, wherein an engagement claw as the retaining portion that engages with the shaft-shaped nut is provided inside the nut insertion hole of the insertion member. The nut support structure according to claim 8, wherein the engagement claw is elastically retractable toward the outside of the nut insertion hole. It has a configuration capable of accessing the engagement claw via the screw insertion space and the female screw portion of the shaft nut and releasing the engagement state between the engagement claw and the shaft nut. Item 10. The nut support structure according to Item 8 or 9. The nut support structure according to claim 9 or 10, wherein the engaging claw is provided with a rotation preventing portion that contacts the shaft nut and prevents the shaft nut from rotating.

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