JP6539082B2 - Joint for support connection and support body - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a post coupling joint and a post body used when connecting the posts.

  Traditionally, columns supporting plants such as vegetables, fruit trees and florets have been driven into the field. At this time, depending on the type and growth degree of the plant, it may be desired to increase the height of the support. In such a case, a post coupling joint is proposed for connecting the posts to form a tall post.

  The above-mentioned joint for pillar connection is formed with a first member attached to one end of one pillar and having a shaft, and a spiral groove attached to one end of the other pillar and capable of screwing the shaft of the first member The second member having the recessed portion, and rotating the first member in a state where the shaft portion of the first member is in contact with the recessed portion of the second member, the recessed portion of the second member The shaft portion is screwed in so that both can be connected (see, for example, Patent Document 1).

Patent No. 4859937 (refer to FIG. 13)

  In the configuration of Patent Document 1, each time the columns are connected, the first member must be rotated and screwed with respect to the second member. Also, when releasing the connection between the connected columns, the first member must be rotated in the direction opposite to the screwing direction with respect to the second member to release the screwing. In particular, when connecting a large number of columns or when it is necessary to release the connection, the operation of screwing in and the operation of releasing the screwing become troublesome and troublesome. Furthermore, when the first member is screwed into the second member, it is difficult to know whether or not both are completely screwed, and it is difficult to grasp whether the screwing operation is completed.

  Therefore, the present invention has been made in view of such circumstances, and can perform connection and disconnection operations between columns easily and quickly, and can be grasped that connection is completed. The challenge is to provide

The joint for supporting a column according to the present invention is a male side joint member having a fitting male portion provided at one end of one of the columns to connect the columns and having an annular outer surface, and the other of the columns A female side joint member having a fitting female portion provided at one end portion and having an annular inner side surface formed by inserting the fitting male portion of the male side fitting member and fitting with the outer surface of the fitting male portion A large diameter portion having an outer diameter larger than an outer diameter on the proximal end side in the insertion direction is provided on the tip side in the insertion direction of the outer surface of the male fitting portion, and the inner surface of the female fitting portion is fitted with the large diameter portion. The male-side joint member and the female-side joint member each have a step portion that can be locked by the proximal end portion in the insertion direction of the large-diameter portion of the male fitting portion in accordance with the fitting with the male portion . The apparatus further comprises an inner fitting portion that can be fitted to the inner side surface of one end of the post, and the inner fitting portion of the female joint member is configured to be hollow inside The male joint member is provided with the fitting female portion and the inside insertable fitting auxiliary fitting portion of the inner fitting portion of the female coupling member at the time of mating with Hamagoyu portion, During the insertion of the fitting male portion into the fitting female portion, the stepped portion expands due to the contact with the outer surface of the large diameter portion, and the insertion fitting of the fitting male portion into the fitting female portion In the joint completion, the leading end of the step in the insertion direction, which returns over the large diameter portion, and the proximal end of the large diameter portion in the insertion direction are configured to abut against each other.

  According to the present invention, only by inserting and fitting the male joint member into the female joint member, the insertion direction of the large diameter portion of the fitting male portion and the insertion direction of the step portion of the fitting female portion The tip end is engaged and locked. The engagement between the female joint member and the male joint member is maintained by this contact locking. Moreover, it can be grasped | ascertained that the connection of support | pillars was completed by the contact (contact) noise which generate | occur | produces at the time of carrying out the said contact locking.

  Further, in the joint for supporting a column according to the present invention, the contact locking portion with respect to one of the step portion and the other of the large diameter portion may be formed in a smooth shape without a corner.

  According to this configuration, since the abutment locking portion for the other one of the step portion and the large diameter portion is formed in a smooth shape without corners, the male side coupling member is pulled out from the female side coupling member. When releasing the fitting, a small operating force can be used.

In the post connecting joint according to the present invention, each strut is formed of a tubular, each of the male joint member and the female coupling member, and the front Symbol in engaging portions, of the strut And an outer fitting portion engageable with an outer side surface of the one end portion, and a plurality of ribs projecting radially outward on the outer surface of the inner fitting portion are provided at predetermined intervals in a circumferential direction. It is also good.

  According to this configuration, since each of the male joint member and the female joint member includes the inner fitting portion and the outer fitting portion, one end portion of the support is used as the inner fitting portion and the outer fitting portion. The male joint member and the female joint member can be fitted and fixed to one end of the column by fitting from both sides. Further, the plurality of radially protruding ribs provided on the outer surface of the inner fitting portion press the inner side surface of one end of the support rod outward, thereby forming each of the male joint member and the female joint member It can be firmly fitted and fixed to one end of the support.

  Further, in the joint for supporting a column according to the present invention, a plurality of ribs protruding radially inward may be provided on the inner surface of the outer fitting portion at predetermined intervals in the circumferential direction.

  According to this configuration, by providing a plurality of radially inward projecting ribs on the inner surface of the outer fitting portion at predetermined intervals in the circumferential direction, one end of the support is pressed inward, and the inside fitting is performed. By pressing one end of the column outward with a plurality of radially outwardly projecting ribs provided on the outer surface of the joint, the male joint member and the female joint member are further strengthened at one end of the column It can be fixed in place.

  Further, in the joint for supporting a column according to the present invention, the rib of the inner fitting portion and the rib of the outer fitting portion may be misaligned in the circumferential direction.

  According to this configuration, since the ribs of the inner fitting portion and the ribs of the outer fitting portion are displaced in the circumferential direction, compared to the case where both ribs are provided at the same position in the circumferential direction, The male joint member and the female joint member can be more reliably fitted and fixed to one end of the support column.

  Further, in the joint for supporting a column according to the present invention, the inside fitting portion of the female side joint member is configured to be hollow inside, and the male side joint member is the fitting female portion and the fitting male portion. At the time of fitting with, an auxiliary fitting portion that can be inserted into and fitted to the inside of the inner fitting portion of the female joint member may be provided.

  According to this configuration, the male joint member includes the auxiliary fitting portion that can be inserted and fitted to the inner fitting portion of the female joint member when the fitting female portion and the fitting male portion are fitted. By the guiding action of the auxiliary fitting portion to the inner fitting portion, the fitting female portion and the fitting male portion can be smoothly fitted. Further, in addition to the fitting of the fitting female portion and the fitting male portion, the shape retention strength of the post coupling joint after connection is enhanced by fitting the inner fitting portion and the auxiliary fitting portion. Can.

  Further, in the present invention, the above-described joint for supporting a column may be attached to a column to configure a column body.

  As described above, according to the present invention, only by inserting and fitting the male joint member into the female joint member, the connection work between the columns is completed. Moreover, when pulling out the male side joint member from the female side joint member and releasing the fitting, a small operation force can be used. Furthermore, it is grasped that the connection between the columns is completed by the contact (contact) sound generated when the leading end of the step in the insertion direction and the proximal end of the large diameter in the insertion direction abut. Can. Therefore, while being able to perform connection operation and connection cancellation | release operation | work of support | pillars rapidly easily, the coupling | joint for support | pillar connection and support | pillar body which can grasp | ascertain completion of connection can be provided.

(A) is a figure which shows the state just before two support | pillars are connected by the joint for support | pillar connection of this invention, (b) is connected with two support | pillars joints for support | pillar connection of this invention It is a longitudinal cross-sectional view which shows the state which was. It is an enlarged view of the part enclosed with (circle) (ellipse) of FIG.1 (b). (A) is the sectional view on the AA line in FIG. 1 (a), (b) is a sectional view on the B-B line in FIG. 1 (a). A female side joint member is shown, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is a perspective view seen from above, (e) is a perspective view seen from below is there. (A) is a cross-sectional view taken along the line C-C in FIG. 3 (a), (b) is a cross-sectional view taken along the line D-D in FIG. 3 (a), and (c) is a cross-sectional view taken along the line E-E in FIG. It is. A male side joint member is shown, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is a perspective view seen from above, and (e) is a perspective view seen from below is there. 5A is a cross-sectional view taken along line F-F in FIG. 5A, FIG. 5B is a cross-sectional view taken along line G-G in FIG. 5A, and FIG. 5C is a cross-sectional view taken along line HH in FIG. It is. (A), (b) is sectional drawing of the principal part which shows the state which the fitting male part of another shape fitted with the fitting female part of another shape.

  FIG. 1 (a) shows a front view of a state immediately before connecting two columns 1, 1 along the vertical direction with the joint 2 for the column connection, and FIG. 1 (b) shows two lines along the vertical direction The longitudinal cross-sectional view of the state which connected the support | pillars 1 and 1 of 1 with the coupling | joint 2 for support | pillar connection is shown. The post coupling joint 2 includes a female side joint member 3 attached to one end of one post 1 and made of synthetic resin, and a male side joint member 4 attached to one end of the other post 1 and made of synthetic resin. It is configured. As synthetic resin materials constituting the joint members 3 and 4, although talc-filled polypropylene is advantageous in terms of strength and durability, various types of synthetic resins having equivalent strength and durability may be used. Depending on the type, various metal materials may be used.

  The support 1 is used, for example, in a field to support a plant, and by connecting the support 1 with each other by the support connecting joint 2, a support having a desired height can be configured. Further, as shown in FIG. 1 (b), each support column 1 is composed of a metal pipe (tube) 1A having a circular cross-sectional shape and a synthetic resin layer 1B coated on the surface of the pipe 1A. In addition, the cyclic | annular ridge 1T which protrudes to a radial direction outer side is formed in the predetermined location of the synthetic resin layer 1B. In addition, as a material which comprises pipe 1A, you may use various synthetic resin materials other than various metal materials. Moreover, various synthetic resin materials can be similarly used for the material of the synthetic resin layer 1B which coat | covers the surface of the pipe 1A.

  As shown in FIGS. 4 (a) to 4 (e) and FIGS. 5 (a) to 5 (c), the female joint member 3 has the fitting male portion 10 of the male joint member 4 (FIGS. b) and (d) are provided to form a fitting female portion 5 in which an annular inner side surface 5A is formed to be fitted with the outer side surface 10A of the fitting male portion 10. At the proximal end opposite to the distal end side where the male fitting portion 10 of the female fitting portion 5 of the female side joint member 3 is inserted, the inner side surface 1U of one end portion of the column 1 (FIG. 1 (b) And an outer fitting portion 7 that can be fitted to the outer side surface 1G (see FIG. 1 (b)) of one end portion of the support 1.

  The fitting female portion 5 includes a cylindrical portion 5a and a substantially ring-shaped outer peripheral edge portion 5b formed radially inward at one end of the cylindrical portion 5a. Four pieces that are inward convex with a predetermined angle (here, 90 degrees) in the circumferential direction on the proximal end side of the fitting male portion 10 in the inner surface 5A of the fitting female portion 5 (cylindrical portion 5a) in the insertion direction The step 8 is formed. An insertion direction proximal end portion 10Z of a large diameter portion 10c of the fitting male portion 10, which will be described later, is in contact with and engaged with the insertion direction distal end portion 8A of the fitting male portion 10 of the step portion 8. Further, a recess 9 into which the large diameter portion 10c is fitted is formed on the tip end side of the fitting male portion 10 of the step portion 8 in the insertion direction. This recess 9 is a fitting male portion of the four projecting portions 8 It is formed by the insertion direction tip end portion 8A of 10 and the inner side surface 5S on the tip end side of the insertion direction of the inner side surface 5A of the fitting male portion 10 of the fitting female portion 5. The stepped portion 8 protrudes radially outward from the inner side surface 5A of the fitting female portion 5 and is formed in a laterally long shape having a predetermined length in the circumferential direction, and as shown in the enlarged view of FIG. It has a semicircular curved surface. Therefore, the insertion direction distal end portion 8A of the fitting male portion 10 of the step portion 8 has a smooth shape without corners, and the insertion direction base end portion of the fitting male portion 10 of the step portion 8 also has a corner There is no smooth shape.

  The inner fitting portion 6 of the female joint member 3 is formed in a cylindrical shape having a tapered surface 6A which extends from the inner peripheral edge of the outer peripheral edge 5b toward the support 1 and is positioned closer to the extending end side The extended end is closed by the disk portion 6B. In addition, on the outer surface of the inner fitting portion 6, four first ribs 6R (see FIGS. 4C and 5A) are provided at predetermined intervals (here, 90 degrees) in the circumferential direction. . Each first rib 6R has an arc shape in cross section and protrudes outward in the radial direction (the amount of protrusion is small so that it is difficult to grasp in the drawing), and the fitting female in the inner fitting portion 6 It extends in an elongated shape from the outer peripheral edge 5 b side end of the portion 5 to the disc portion 6 B side. The disc portion 6B side end of each first rib 6R is a side end (disc portion 6B separated from the cylindrical portion 5a of the fitting female portion 5 in the outer fitting portion 7 as shown in FIG. 5A) It is located slightly before the side edge). The top of the first rib 6R extends parallel to the axial direction of the female joint member 3, but the cylindrical portion of the female fitting portion 5 is parallel to the tapered surface 6A of the inner fitting portion 6. It may be extended so as to be positioned inward as to the side (disk portion 6B side) away from 5a.

  The outer fitting portion 7 of the female side joint member 3 extends from the outer peripheral edge of the outer peripheral edge portion 5b of the fitting female portion 5 toward the support 1 side, and the outer surface on the extending end side is from the outer surface of the cylindrical portion 5a. Also one step lower (diameter is smaller). And the extension length of the outside fitting part 7 is shorter than the extension length of the inside fitting part 6 of the female side joint member 3 (in fact, it is a length slightly shorter than 1/2) ). Further, on the inner surface of the outer fitting portion 7, four second ribs 7R (see FIGS. 4C and 5B) are provided at predetermined intervals (here, 90 degrees) in the circumferential direction. . Each second rib 7R protrudes radially outward, and has a chevron-shaped cross section between the end of the outer peripheral edge portion 5b of the fitting female portion 5 and the extending end of the outer fitting portion 7 (the top is rounded And in an axially elongated shape of the female joint member 3. The top of the second rib 7R extends inward in the axial direction of the female joint member 3 toward the outer peripheral edge portion 5b of the fitting female portion 5, but the female joint member 3 It may extend parallel to the axial direction of Further, the second rib 7R and the first rib 6R are provided at positions shifted in the circumferential direction. Specifically, as shown in FIG. 3B, the first rib 6R and the second rib 7R are positioned in a state of being shifted 45 degrees (which may be any angle) in the circumferential direction. .

  The male side joint member 4 is inserted into the fitting female portion 5 of the female side coupling member 3 as shown in FIGS. It has the fitting male part 10 in which the annular | circular shaped outer surface 10A fitted with the inner surface 5A of 5 is formed. Also, the inner surface 1U (see FIG. 1 (b)) of one end of the column 1 is fitted at the end opposite to the insertion side of the fitting male part 10 of the male joint member 4 into the fitting female part 5 The possible inner fitting part 11 and the outer fitting part 12 which can be fitted to the outer surface 1G (refer FIG.1 (b)) of the one end part of the support | pillar 1 are provided.

  As shown in FIGS. 7 (a), (b) and (c), the fitting male portion 10 is inserted into the cylindrical portion 5a of the fitting female portion 5 and fitted therein. It is comprised from the substantially ring shaped outer-periphery edge part 10b formed toward radial direction inner side at the end of the main-body part 10a. Further, the main body portion 10a which is the insertion direction tip end portion of the fitting male portion 10 is configured as a large diameter portion 10c having an outer diameter larger than the outer diameter of the insertion direction proximal end portion (outside fitting portion 12 described later). ing. The insertion direction proximal end portion 10Z of the large diameter portion 10c, that is, the boundary portion between the large diameter portion 10c and the outer fitting portion 12 is configured as a stepped portion with an angle. In addition, the inside of the fitting male portion 10, at the time of fitting between the fitting female portion 5 and the fitting male portion 10, a cylindrical shape that can be inserted into and fitted to the inside of the inner fitting portion 6 of the fitting female portion 5 The auxiliary fitting portion 13 is provided. The outer surface of the auxiliary fitting portion 13 is formed in a tapered surface whose diameter decreases toward the tip end (free end).

  The inner fitting portion 11 of the male joint member 4 extends from the inner peripheral edge of the outer peripheral edge portion 10b toward the opposite side to the auxiliary fitting portion 13 and has a smaller diameter toward the tip end (located closer to the tip end) 2.) It has a cylindrical shape with a tapered outer surface. In addition, the inner surface of the inner fitting portion 11 is configured as a tapered surface located closer to the tip end side. Further, on the outer surface of the inner fitting portion 11, four third ribs 11R (see FIGS. 6C and 7A) are provided at predetermined intervals (here, 90 degrees) in the circumferential direction. . Each third rib 11R has a semicircular cross-sectional shape and protrudes outward in the radial direction (because the amount of protrusion is small, it is difficult to grasp in the drawing), and the fitting in the inner fitting portion 11 It extends in an elongated shape from the outer peripheral edge 10 b end of the male portion 10 to the extending end side. The extended end of each third rib 11R is located slightly in front of the side end of the outer fitting portion 12 which is separated from the main body portion 10a of the fitting male portion 10, as shown in FIG. 7A. . The top of the third rib 11R extends in parallel in the axial direction, but extends inward from the main body portion 10a so as to be parallel to the tapered surface of the inner fitting portion 11. May be

  The outer fitting portion 12 of the male joint member 4 extends from the proximal end portion in the insertion direction of the main body portion 10a to the support 1 side opposite to the auxiliary fitting portion 13 and is one step lower than the outer surface of the main body portion 10a. It has an outer surface (small diameter). And the extension length of the outside fitting part 12 is shorter than the extension length of the inside fitting part 11 of the female side joint member 3 (in fact, it is a length slightly shorter than 1/2) ). Further, on the inner surface of the outer fitting portion 12, four fourth ribs 12R (see FIGS. 6C and 7B) are provided at predetermined intervals (here, 90 degrees) in the circumferential direction. . Each fourth rib 12R protrudes radially outward, and has a chevron-shaped cross-section between the end of the outer peripheral edge portion 10b of the inner fitting portion 11 and the extending end of the outer fitting portion 12 (the top is rounded In a long and narrow shape. The top of the fourth rib 12R extends inward (is located inward) toward the outer peripheral edge 10b of the fitting male portion 10, but parallel to the axial direction of the male joint member 4 It may extend. Further, the fourth rib 12R and the third rib 11R are provided at different positions in the radial direction. Specifically, as shown in FIG. 3A, the third rib 11R and the fourth rib 12R are located at an angle of 45 degrees in the circumferential direction.

  The female joint member 3 configured as described above is fitted and attached to one end of one of the columns 1. At this time, as shown in FIG. 3B, the four first ribs 6R of the inner fitting portion 6 bite into the inner side surface 1U of the column 1 at intervals of 90 degrees in the circumferential direction, and the outer fitting is performed. The four second ribs 7R of the joint portion 7 bite into the outer surface 1G of the support 1 at a position shifted 45 degrees in the circumferential direction with respect to the first rib 6R, and the female side joint member 3 is used as one support The state firmly fitted to 1 can be maintained. Further, the male joint member 4 is fitted and attached to one end of one of the columns 1. At this time, as shown in FIG. 3A, the four third ribs 11R of the inner fitting portion 11 bite into the inner side surface 1U of the column 1 at intervals of 90 degrees in the circumferential direction, and the outer fitting is performed. The four fourth ribs 12R of the joint portion 12 bite into the outer surface 1G of the support 1 at a position shifted 45 degrees in the circumferential direction with respect to the third rib 11R, and the male joint member 4 is used as one support It is possible to maintain the firmly fitted state at one end portion of 1.

  From this state, that is, from the state shown in FIG. 1 (a), only by moving the fitting male portion 10 of the male side fitting member 4 in the direction of the arrow to the fitting female portion 5 of the female side fitting member 3 Can be fitted. At the time of this fitting, the auxiliary fitting portion 13 is first introduced into the inner fitting portion 6 and guided, whereby the fitting male portion 10 of the male side fitting member 4 is fitted to the fitting female portion 5 of the female side fitting member 3 It can be fitted smoothly. During the insertion of the fitting male portion 10 into the fitting female portion 5, the step portion 8 expands due to the contact with the outer surface of the large diameter portion 10c, and the step is carried over the large diameter portion 10c to complete the insertion fitting completion. The insertion direction distal end portion 8A of the portion 8 and the insertion direction proximal end portion 10Z of the large diameter portion 10c abut against each other (see FIG. 2). The contact (contact) sound generated when this contact locking is performed makes it possible to grasp that the connection between the columns 1 is completed. In addition, the insertion direction front end 8A of the step 8 which is an abutting locking portion to the other of the step 8 and the large diameter portion 10c is formed into a smooth shape (a circular arc-shaped surface) having no corners. Therefore, when pulling out the male joint member 4 from the female joint member 3 to release the fitting, a small operation force can be used. Further, after the female side joint member 3 and the male side joint member 4 are fitted, not only the fitting of the fitting female portion 5 and the fitting male portion 10 but also the inner fitting portion 6 and the auxiliary fitting portion By fitting with 13, it is possible to enhance the shape retention strength of the column coupling joint 2 itself.

  Here, the stepped portion 8 expands due to the contact with the outer surface of the large diameter portion 10c in the middle of the insertion of the fitting male portion 10 into the fitting female portion 5, and over the large diameter portion 10c in the insertion completion. Abutment (contact) noise (hereinafter referred to as the first abutment noise) only when the insertion direction distal end 8A of the step 8 to be restored and the insertion direction proximal end 10Z of the large diameter portion 10c abut. Although the case where it occurs is described, in addition to the first contact noise, the end surface 6C on the fitting recess 5 side of the inner fitting portion 6 of the female side joint member 3 when fitting is completed as shown in FIG. In addition, when the distal end surface 12C of the large diameter portion 10c abuts and a second abutment sound is generated, it may be possible to more clearly recognize that the fitting is completed. Further, as a reference example, depending on the shape of the insertion direction distal end portion 8A of the step portion 8 and the shape of the insertion direction proximal end portion 10Z of the large diameter portion 10c, the first contact noise may not be generated. It can also be configured such that it can be understood that the fitting is completed by only the second contact noise being generated. In this case, as a principle of generation of the second contact noise, a worker who performs a fitting operation by adding a movement resistance to the step portion 8 when passing over the large diameter portion 10c at the time of insertion fitting, Since the operation force for inserting the male fitting portion 10 into the female fitting portion 5 is increased, the moving speed of the step portion 8 is increased, and the end face 6C on the fitting concave portion 5 side of the inner fitting portion 6 is large. The distal end surface 12C of the diameter portion 10c strongly abuts, and a second abutment sound is generated.

  The size (see FIG. 5B) of the gap between the top of the second rib 7R of the outer fitting 7 and the outer surface (tapered surface 6A) of the inner fitting 6 in the female joint member 3 is The size of the gap between the top of the fourth rib 12R of the outer fitting portion 12 of the member 4 and the outer surface of the inner fitting portion 11 (see FIG. 7 (b)) Although the side joint member 3 can be fitted and fixed more firmly, it may be set to the same clearance. When the fitting male portion 10 of the male side fitting member 4 fitted to the fitting female portion 5 of the female side fitting member 3 is released from the fitting, the female side fitting member 3 and the male side fitting member 4 The force to maintain the fitting of the female joint member 3 and the male joint member 4 with respect to the column 1 is set so as not to be detached from the column 1.

  In addition, the support | pillar which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  In the embodiment described above, the step portion 8 is constituted by a plurality of projecting portions formed at predetermined intervals in the circumferential direction on the inner side surface 5A of the fitting female portion 5. The step 8 may be constructed from an annular projection which is continuous in the direction. Moreover, you may comprise the step part 8 and the large diameter part 10c like Fig.8 (a), (b). In FIG. 8A, the inner side surface of the fitting female portion 5 is a first inner side surface 5C that is a flat surface positioned on the proximal end side of the fitting male portion 10 in the insertion direction, and A second inner side surface 5D located on the side and recessed in the outer side than the first inner side surface 5C, and a boundary portion between the first inner side surface 5C and the second inner side surface 5D to connect them, and It comprises from the step part 5E comprised with the inclined surface located in the outer side as the 2nd inner surface 5D side. The stepped portion 5E is formed of a smooth curved surface that protrudes inward without corners. On the other hand, at the boundary between the large diameter portion 10 c and the outer fitting portion 12, the insertion direction proximal end portion 10 X of the fitting male portion 10 having an angle positioned outward toward the large diameter portion 10 c is provided. . Accordingly, since the fitting female portion 5 is provided with the step portion 5E having a smooth curved surface that protrudes inward, when the male side joint member 4 is pulled out (released) from the female side joint member 3, It can be completed with a small operating force. In FIG. 8B, the inner side surface of the fitting female portion 5 is, similarly to FIG. 8A, a first inner side surface 5C which is a flat surface located on the proximal end side of the fitting male portion 10 in the insertion direction; In order to connect the second inner side surface 5D located on the tip end side in the insertion direction of the fitting male portion 10 and recessed in the outer side than the first inner side surface 5C, and the first inner side surface 5C and the second inner side surface 5C It is comprised from the step part 5F which has an inclined surface which is located in the boundary part of both, and is located in the outer side as the 2nd inner surface 5D side. The stepped portion 5F is formed of a plane having an angle. On the other hand, the insertion direction proximal end portion 10Y of the fitting male portion 10 of the large diameter portion 10c is constituted by a smooth curved surface which protrudes outward. Therefore, since the insertion direction proximal end portion 10Y of the large diameter portion 10c is formed of a smooth curved surface that protrudes outward without corners, the male side joint member 4 is pulled out from the female side joint member 3 (lock release Can be done with a small operating force. Further, both the step portions 5E and 5F and the large diameter portion 10c may be formed into a smooth shape with no corners. Furthermore, one or both of the step portion 8 and the large diameter portion 10c may be configured to have an angled shape. In this case, when the male side joint member 4 is pulled out (lock release) from the female side joint member 3, the fitting between the column 1 and the female side joint member 3 is released, or the column 1 and the male side joint member The fitting force between the column 1 and the female joint member 3 or the fitting force between the column 1 and the male joint member 4 is considered so that the fitting with 4 is not released.

  In the above embodiment, the ribs 6R and 11R of the inner fitting portions 6 and 11 and the ribs 7R and 12R of the outer fitting portions 7 and 12 are offset in the circumferential direction, but both ribs 6R and 11R are provided. And 7R, 12R may be provided at the same position in the circumferential direction.

  Moreover, although the ribs 7R and 12R were provided in the inner surface of the outer side fitting parts 7 and 12 in the said embodiment, you may abbreviate | omit these ribs 7R and 12R.

  Moreover, although the auxiliary fitting part 13 was provided in the said embodiment, you may abbreviate | omit.

  Moreover, in the said embodiment, although the inner fitting parts 6 and 11 were equipped with four ribs 6R and 11R and the outer fitting parts 7 and 12 were equipped with four ribs 7R and 12R, the ribs 6R and 11R The number of the ribs 7R and 12R is preferably a plurality of arbitrary numbers, but may be one.

  DESCRIPTION OF SYMBOLS 1 ... Support | pillar, 1A ... Pipe, 1B ... Synthetic resin layer, 1G ... Outer surface, 1T ... Protrusion, 1U ... Inner side, 2 ... Joint for support | pillar connection, 3 ... Female side joint member, 4 ... Male side joint member, 5: fitting female portion, 5A: inner side surface, 5C: first inner side surface, 5D: second inner side surface, 5E, 5F: step portion, 5S: inner surface, 5a: cylindrical portion, 5b: outer peripheral edge portion, 6 11, 11 inner fitting portion 6A taper surface 6B disc portion 6C bottom surface 6R first rib 7, 12 outer fitting portion 7R second rib 8 stepped portion Sections 8A: insertion direction tip portion 9: recess portion 10: fitting male portion 10A: outer surface 10X, 10Y: base end portion 10Z: insertion direction base end portion 10a: main body portion 10b: outside Peripheral portion, 10c: Large diameter portion, 11: Inner fitting portion, 11R: Third rib, 12C: Tip surface, 12R: Fourth rib, 13: Auxiliary fitting portion

Claims (6)

A male side joint member having a fitting male portion provided at one end of one of the columns to connect the columns to one another and having an annular outer surface, and the male side joint member provided at one end of the other column And a female side joint member having a female fitting portion in which an annular inner side surface is formed by inserting the male mating portion into the male side and fitting with the outer side surface of the male mating portion,
A large diameter portion having an outer diameter larger than the outer diameter on the proximal end side in the insertion direction is provided on the tip side in the insertion direction in the outer surface of the male fitting portion, and the male side on the mating female portion is provided with the large diameter portion. A stepped portion capable of locking the proximal end portion in the insertion direction of the large diameter portion of the fitting male portion in accordance with the fitting with the portion ;
Each of the male joint member and the female joint member includes an inner fitting portion that can be fitted to the inner side surface of one end of the support column, and the inner fitting portion of the female joint member is hollow inside The male side joint member is an auxiliary fitting portion that can be inserted into and fitted to the inside of the inner fitting portion of the female side joint member when the fitting female portion and the fitting male portion are fitted. Equipped with
During the insertion of the fitting male portion into the fitting female portion, the stepped portion expands due to the contact with the outer surface of the large diameter portion, and the insertion fitting of the fitting male portion into the fitting female portion In the joint completion, the insertion direction tip end portion of the step portion which returns over the large diameter portion and returns and the insertion direction base end portion of the large diameter portion are configured to abut and lock each other. Coupling joint.   2. The joint for supporting a column according to claim 1, wherein the abutment locking portion for the other one of the step portion and the large diameter portion is formed in a smooth shape without corners. Wherein each strut is formed of a tubular, each of the male joint member and the female coupling member has a front Symbol in engaging portions, which can be fitted outside the fitting on the outer surface of the one end of the strut The column connection according to claim 1 or 2, further comprising: a plurality of ribs projecting radially outward on the outer surface of the inner fitting portion at predetermined intervals in a circumferential direction. Fittings.   4. The joint for supporting a column according to claim 3, wherein a plurality of radially inwardly projecting ribs are provided on the inner surface of the outer fitting portion at predetermined intervals in the circumferential direction.   The joint for pillar connection according to claim 4, wherein the rib of the inner fitting portion and the rib of the outer fitting portion are displaced in the circumferential direction. A pillar body configured by attaching the joint for supporting a pillar according to any one of claims 1 to 5 to a pillar.

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