JP2017020566A - stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stand that supports an article and that has legs made lightweight while keeping rigidity of the legs large to a certain extent.SOLUTION: A stand comprises struts (lower pipe 11, middle pipe 12 and upper pipe 13) supporting an article atop, legs 21, 22 and 23 on which the lower pipe 11 is stood to be supported, and stays 24, 25 and 26. Inside ends of the legs 21, 22 and 23 are assembled rotatably to an upper base 27 assembled to the lower pipe 11. Inside ends of the stays 24, 25 and 26 are assembled rotatably to a lower base 27 assembled to the lower pipe 11, and outside ends of the stays 24, 25 and 26 are assembled rotatably to intermediate parts of the legs 21, 22 and 23. The legs 21, 22 and 23 are each formed in a long-sized body having a lower part opened by providing a bent part to a flat plate-like member having a flat plate-like part at least partially.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stand that supports articles such as a percussion instrument, a music stand, a microphone, a camera, and a telescope at an upper position.

  Conventionally, a stand in which an article is assembled on a pipe supported so as to be erected by three legs is well known. For example, Patent Document 1 below discloses a musical instrument stand in which a tam tom and a cowbell are assembled on the upper part of a pipe. In this musical instrument stand, the cylindrical upper base is assembled on the lower outer peripheral surface of the pipe so as to be movable in the vertical direction and fixed at an appropriate position. It is being fixed to the lower end part. And the inner end part of three legs is assembled | attached to the position of a 120 degree space | interval on the outer peripheral surface of an upper base so that rotation in the up-down direction is possible. In addition, at the same circumferential position as the three legs on the outer peripheral surface of the lower base, the inner end portions of the three stays are assembled so as to be rotatable in the vertical direction. The outer end portions are assembled to the middle portions of the three legs so as to be rotatable in the vertical direction.

  In this case, normally, the three legs and the three stays are each configured in a strip shape having a rectangular cross-sectional shape. And the inner side edge part of each leg is piled up on the side surface of the support piece protruded on the outer peripheral surface of the upper base, and is supported rotatably via the pin. The inner end portion of each stay is rotatably supported via a pin so as to overlap the side surface of the support piece protruding on the outer peripheral surface of the lower base. The outer end portion of each stay is rotatably supported via a pin so as to overlap the side surface of the intermediate portion of each leg. Also, a fixing screw penetrates the side of the upper base from the outside. After adjusting the vertical position of the upper base with the fixing screw loosened, the fixing screw is screwed in. The upper base is fixed on the outer peripheral surface of the pipe by bringing its tip into contact with or intruding into the outer peripheral surface of the pipe.

Japanese Utility Model Publication No. 61-29397

  However, since the legs in the above prior art are band-shaped members having a rectangular cross-sectional shape, it is necessary to increase the cross-sectional area and thickness to some extent in order to increase the rigidity in the vertical and horizontal directions to some extent. . Therefore, in this case, there is a problem that the weight of the leg itself increases.

  The present invention has been made to cope with such problems, and an object of the present invention is to provide a stand that reduces the weight of the legs while maintaining the rigidity of the legs in the vertical and horizontal directions to a certain extent. There is. In the description of each constituent element of the present invention below, the reference numerals of corresponding portions of the embodiment are shown in parentheses in order to facilitate understanding of the present invention. The present invention should not be construed as being limited to the configurations of the corresponding portions indicated by the reference numerals of the forms.

  In order to achieve the above-described object, the present invention is characterized in that the pillars (11, 12, 13) that extend in the vertical direction and support the article at the upper part, and the upper base that is assembled on the outer peripheral surface of the pillar. The bent portion is provided on the flat plate member (27), the lower base (29) assembled below the upper base and on the outer peripheral surface of the support column, and the flat plate member having at least a flat plate portion. A plurality of long legs that are open at the bottom, each assembled at the inner end so as to be rotatable in a plane including the support on the upper base, and outward from the outer peripheral surface of the support A plurality of extended legs (21, 22, 23) and a plurality of stays provided corresponding to each of the plurality of legs and formed in an elongated shape, with a lower base at the inner end Is mounted in a plane that includes a column and a corresponding leg, and can be rotated in the middle of the corresponding leg at the outer end. And a plurality of stays (24, 25, 26) assembled so as to be rotatable in a plane including the pillar and the corresponding leg, and one of the upper base and the lower base is supported by the pillar. The other base of the upper base and the lower base is attached to the support so that it can be moved vertically and fixed with respect to the support. It is assembled and fixed to the column.

  In this case, for example, a plurality of support portions (27b, 27c, 27d, 27e) corresponding to the plurality of legs projecting outward are provided on the outer peripheral surface of the upper base, and the inner ends of the plurality of legs are mutually connected. A pair of opposed flat plate portions (21b, 21c, 22b, 22c, 23b, 23c) are provided, and a plurality of legs are formed by a plurality of support portions and shaft members (31, 33, 34) penetrating the flat plate portions. It is good to assemble to the upper base for rotation. For example, the cross-sectional shape orthogonal to the longitudinal direction of the plurality of legs may be a U-shape. Further, for example, the plurality of legs and the plurality of stays may be provided by three each, but may be other numbers. Furthermore, the plurality of stays are formed, for example, in a band shape whose cross-sectional shape is a U shape or whose cross-sectional shape is a square shape.

  In the stand according to the present invention configured as described above, one of the upper base and the lower base is assembled to the support column so as to be movable in the vertical direction and fixed to the support column. ing. The other base of the upper base and the lower base is assembled to the support column or fixed to the support column so as to be movable in the vertical direction and fixed to the support column. And the several leg is assembled | attached so that it can rotate in the plane containing a support | pillar in an upper base at an inner side edge part. The plurality of stays are assembled so as to be rotatable in a plane including the support and the corresponding leg on the lower base at the inner end, and the support and the support correspond to the middle part of the corresponding leg at the outer end. It is assembled so as to be rotatable within a plane including the legs. Therefore, with the other of the upper base and the lower base fixed to the column, the outer ends of the plurality of legs are rotated inwardly or outwardly, and the one base is If the column is fixed to the column at an appropriate position after being moved in the vertical direction, the column can be fixedly supported on the plurality of legs and the plurality of stays after the height of the column is adjusted appropriately.

  In the feature of the present invention, the plurality of legs are formed in a long shape in which a bent portion is provided on a flat plate member having a flat plate portion at least partially and the lower portion is opened. It is shaped like a letter and is long. As a result, according to the features of the present invention, the cross-sectional area of the plurality of legs can be reduced and the weight of the plurality of legs can be reduced while maintaining the rigidity in the vertical direction and the horizontal direction to some extent. .

  Another feature of the present invention is that the distance between the inner surfaces facing each other in the direction orthogonal to the longitudinal direction of the plurality of legs is made larger than the width in the direction orthogonal to the longitudinal direction of the stay. According to this, by releasing the fixation of the base of one of the upper base and the lower base to the outer ends of the plurality of legs to the support side, a plurality of The stand can be easily stored with the legs in the same direction as the column extension. As a result, according to the other feature of the present invention, the plurality of stays are accommodated in the plurality of legs, so that the stand is not bulky at the time of accommodation.

  Another feature of the present invention is that a resin clutch member is interposed between the support and the one base. According to this, the fixing of the one base to the outer peripheral surface of the column is ensured.

1 is an overall schematic perspective view of a musical instrument stand according to an embodiment of the present invention. It is the schematic perspective view which looked at the lower part of the stand for musical instruments of FIG. 1 from diagonally upward. It is the schematic perspective view which looked at the lower part of the stand for musical instruments of FIG. 1 from diagonally downward. It is the expansion schematic perspective view seen from diagonally upward which shows the assembly | attachment state to the lower pipe of the leg in the musical instrument stand of FIG. It is a cross-sectional view which shows the assembly | attachment state to the upper base of the leg of FIG. (A) is a front view of one leg of the musical instrument stand of FIG. 1, (B) is a side view of the leg, and (C) is a bottom view of the leg. (A) is a front view of the other leg of the musical instrument stand of FIG. 1, (B) is a side view of the leg, and (C) is a bottom view of the leg. (A) is a front view of the stay of the musical instrument stand of FIG. 1, (B) is a side view of the stay, and (C) is a top view of the stay. It is the perspective view which looked at the upper base of the musical instrument stand of FIG. 1 from diagonally upward. It is the perspective view which looked at the clutch member of the musical instrument stand of FIG. 1 from diagonally upward. It is the perspective view which looked at the lower base of the musical instrument stand of FIG. 1 from diagonally upward. (A) is the schematic perspective view which looked at the lower part of the instrument stand for demonstrating the folding process of the leg of FIG. 1 from diagonally upward, (B) is the lower part of the instrument stand which shows the folding completion state of the said leg It is the schematic perspective view which looked at from diagonally upward. (A) is the cross-sectional view of the leg used for confirmation of the rigidity of the leg of the musical instrument stand according to the present invention, and (B) is a rectangular cross-sectional shape for comparison with the leg of (A). It is a cross-sectional view of the leg.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall schematic perspective view of a musical instrument stand according to an embodiment.

  This musical instrument stand is provided with a column composed of a lower pipe 11, a middle pipe 12 and an upper pipe 13 each made of a metal material in a cylindrical shape. The lower pipe 11 includes three foldable metal legs 21, 22, 23 that hold a musical instrument stand upright on the floor, ground, stage, etc., and the lower pipe 11, legs 21, 22. , 23 are connected to three metal stays 24, 25, 26, respectively. The lower part of the musical instrument stand including these legs 21, 22, 23 and stays 24, 25, 26 will be described in detail later.

  The middle pipe 12 has an outer diameter slightly smaller than the inner diameter of the lower pipe 11, and a lower end of the middle pipe 12 enters the lower pipe 11 from an upper end surface of the lower pipe 11, and a lower surface of the upper stopper 15 is an upper surface of the lower stopper 14. And is fixed to the upper end of the lower pipe 11. The lower stopper 14 is formed in a cylindrical shape with a part cut in the circumferential direction, and is provided so that a pair of projecting pieces are opposed to the notched ends, and a bolt is passed through a through hole provided in the pair of projecting pieces. The nut is fixed on the outer peripheral surface of the upper end portion of the lower pipe 11 by a nut. The upper stopper 15 is also formed in a cylindrical shape with a part cut in the circumferential direction, and is provided so that a pair of projecting pieces are opposed to the notched ends, and a bolt is passed through a through hole provided in the pair of projecting pieces. The nut is fixed on the lower outer peripheral surface of the middle pipe 12 by a nut. In this case, if the upper stopper 15 is fixed to the outer peripheral surface of the middle pipe 12 with a nut after adjusting the vertical position relative to the middle pipe 12 of the upper stopper 15, the amount of penetration of the middle pipe 12 into the lower pipe 11 is reduced. By adjusting, the height of the middle pipe 12 is adjusted.

  The upper pipe 13 has an outer diameter slightly smaller than the inner diameter of the middle pipe 12, and a lower end portion of the upper pipe 13 enters the middle pipe 12 from an upper end surface of the middle pipe 12, and a lower surface of the upper stopper 17 is an upper surface of the lower stopper 16. And is fixed to the upper end of the middle pipe 12. The lower stopper 16 is configured in the same manner as the lower stopper 14 and is fixed on the outer peripheral surface of the upper end portion of the middle pipe 12 by bolts and nuts. The upper stopper 17 is configured in the same manner as the upper stopper 15 and is fixed on the lower outer peripheral surface of the upper pipe 13 by bolts and nuts. Also in this case, the height of the upper pipe 13 is adjusted by adjusting the vertical position of the upper stopper 17 relative to the upper pipe 13. A mounting bracket 18 is assembled on the upper pipe 13, and a cymbal 19 is fixed to the mounting bracket 18, for example.

  Next, the lower part of the stand provided with the legs 21, 22, 23 and the stays 24, 25, 26 will be described in detail with reference to FIGS. FIG. 2 is a schematic perspective view of the lower part of the musical instrument stand as viewed obliquely from above. FIG. 3 is a schematic perspective view of the lower part of the musical instrument stand as viewed obliquely from below. FIG. 4 is an enlarged schematic perspective view showing the assembled state of the legs 21, 22, 23 and the stays 24, 25, 26 in the lower pipe 11 in the musical instrument stand, as viewed obliquely from above. FIG. 5 is a cross-sectional view showing a state where the legs 21 are assembled to the upper base 27. 6 to 11 are component diagrams of various components.

  As shown in FIG. 6, the legs 21 are formed in a long shape by bending a metal flat plate member and opening the lower part to make the cross-sectional shape U-shaped. Side walls 21b and 21c are provided. The side wall portions 21b and 21c are bent at a right angle to the upper wall portion 21a and face each other in parallel. The side wall parts 21b and 21c are longer than the upper wall part 21a, one end side (inner end side) thereof protrudes from one end of the upper wall part 21a, and the tip part thereof is semicircular. A square through hole 21b1 is provided at one end of the side wall 21b, and a circular through hole 21c1 is provided at one end of the side wall 21c so as to face the through hole 21b1. The other ends of the side wall portions 21b and 21c are at the same position as the other end of the upper wall portion 21a, and their lower end portions are circular. Circular through holes 21b2 and 21c2 are provided to face each other at substantially the center positions of the side walls 21b and 21c. However, the through hole 21c2 is not shown.

  As shown in FIG. 7, the legs 22 are also formed in a long shape by bending a metal flat plate member and opening the lower part so that the cross-sectional shape is U-shaped. Side walls 22b and 22c are provided. The leg 22 is the same as the leg 21 except that a circular through hole 22b1 is provided on one end side of the side wall portion 22b. The side wall portions 22b and 22c include the through holes 21b2, 21c1, and the like. Circular through holes 22b2, 22c1, and 22c2 similar to 21c2 are provided, respectively. The leg 23 has the same configuration as the leg 22, and has an upper wall part 23a and side wall parts 23b, 23c, as shown in parentheses in FIG. 7, and the side wall parts 23b, 23c include the through holes 22b1, 22b2. , 22c1, 22c2 are provided with circular through holes 23b1, 23b2, 23c1, 23c2, respectively. However, in these cases, the through holes 22c1, 22c2, 23c1, and 23c2 are not shown.

  As shown in FIG. 8, the stay 24 is formed in a long shape by bending a metal flat plate member so that the upper side is opened and the cross-sectional shape is a U-shape. Side walls 24b and 24c are provided. The side wall portions 24b and 24c are bent at a right angle with respect to the upper wall portion 21a and face each other in parallel. The side wall parts 24b and 24c are slightly longer than the lower wall part 24a, and both ends thereof protrude from both ends of the lower wall part 24a. The end portions of both ends of the side walls 24b and 24c are semicircular, and circular through holes 24b1 and 24c1 and circular through holes 24b2 and 24c2 are provided to face each other at both ends. However, the through holes 24c1 and 24c2 are not shown. The distance between the outer side surfaces of the side wall portions 24b and 24c is slightly shorter than the distance between the inner side surfaces of the side wall portions 21b and 21c of the leg 21.

  The stays 25 and 26 have the same configuration as the stay 24. As shown in parentheses in FIG. 8, the stays 25 and 26 have lower wall portions 25a and 26a and side wall portions 25b, 25c, 26b and 26c, respectively, and the side wall portions 25b and 25c. 26b, 26c are provided with circular through holes 25b1, 25b2, 25c1, 25c2, 26b1, 26b2, 26c1, 26c2 similar to the through holes 24b1, 24b2, 24c1, 24c2, respectively. However, in these cases, the through holes 25c1, 25c2, 26c1, and 26c2 are not shown. Further, the distance between the outer side surfaces of the side wall portions 25b and 25c and the distance between the outer side surfaces of the side wall portions 26b and 26c are the distance between the inner side surfaces of the side wall portions 22b and 22c of the leg 22 and the side wall portions 23b and 23c of the leg 23. Each is slightly shorter than the distance between the inner surfaces.

  The legs 21, 22, 23 are rotatably supported by the upper base 27 assembled to the lower part of the lower pipe 11 at their inner ends. As shown in FIG. 9, the upper base 27 is configured integrally with a metal material, and has a cylindrical main body portion 27 a in which a part in the circumferential direction is cut out in the vertical direction. The main body portion 27a is provided with support pieces 27b and 27c that protrude outward from both end portions (the notched end portions), and two support portions 27d and 27e that protrude outward from the outer peripheral surface of the main body portion 27a. It has been. The center positions in the circumferential direction of the support portions 27d and 27e are shifted from the center positions in the circumferential direction of the support pieces 27b and 27c by approximately 120 degrees around the axis of the main body portion 27a.

  The support pieces 27b and 27c are formed in a flat plate shape and face each other with a gap therebetween, and the distance between the outer surfaces thereof is substantially equal to the distance between the inner surfaces of the side wall portions 21b and 21c of the leg 21. Near the center of the support pieces 27b and 27c, circular through holes 27b1 and 27c1 having substantially the same diameter as the circular through holes 21c1 provided in the side wall portion 21c of the leg 21 are provided so as to face each other. The through holes 27b1 and 27c1 are positioned so as to face the through holes 21b1 and 21c1 of the leg 21 when the leg 21 is assembled to the upper base 27. However, as shown in FIG. 5, the through hole 27b1 has a two-step outer radius, and the outer portion has a protrusion 31a provided on the lower surface of the head of the bolt 31 described later. Even if it penetrates into 27b1, the relative rotation of the bolt 31 and the upper base 27 is enabled.

  The support portions 27d and 27e are configured by a plate-like member having a space inside. Near the center of both side wall portions of the support portions 27d and 27e, the circular through holes 27d1, 27d2 and the through holes 27e1, which have substantially the same diameter as the circular through holes 22b1, 22c1, 23b1, 23c1 provided in the legs 22,23. 27e2 are provided to face each other. These through holes 27d1, 27d2, 27e1, 27e2 are respectively opposed to the through holes 22b1, 22c1, 23b1, 23c1 of the legs 22, 23 in a state where the legs 22, 23 are assembled to the upper base 27. Located in. However, the through holes 27d2 and 27e2 are not shown.

  In the assembled state of the upper base 27 configured as described above to the lower pipe 11, the clutch member 28 is interposed between the lower pipe 11 and the upper base 27. As shown in FIG. 10, the clutch member 28 is integrally formed of a synthetic resin material (for example, nylon material) that is elastically deformed, and has a cylindrical main body portion 28 a that is partially cut in the circumferential direction. . The diameter of the inner peripheral surface of the main body 28 a is substantially equal to the diameter of the lower pipe 11, and the diameter of the outer peripheral surface of the main body 28 a is substantially equal to the diameter of the inner peripheral surface of the main body 27 a of the upper base 27. The main body portion 28a is provided with support pieces 28b and 28c that protrude outward from both end portions (the notched end portions). The support pieces 28b and 28c are formed in a flat plate shape and face each other with a gap therebetween, and the distance between the outer surfaces thereof is substantially equal to the distance between the inner surfaces of the support pieces 27b and 27c of the upper base 27. Near the center of the support pieces 28b and 28c, circular through holes 28b1 and 28c1 having substantially the same diameter as the circular through holes 27b1 and 27c1 provided in the support pieces 27b and 27c of the upper base 27 are provided to face each other. Yes. The through holes 28b1 and 28c1 are formed with the through holes 21b1 and 21c1 of the legs 21 and the through holes 27b1 and 27c1 of the upper base 27 when the clutch member 28 is interposed between the lower pipe 11 and the upper base 27, respectively. They are positioned to face each other.

  Here, a process of assembling the legs 21, 22, 23 on the lower pipe 11 using the upper base 27 and the clutch member 28 having the above configuration will be described. The lower pipe 11 is inserted into the main body 27 a of the upper base 27, and the clutch member 28 is inserted between the lower pipe 11 and the upper base 27 from above or below, so that the clutch member 28 is placed on the outer peripheral surface of the lower pipe 11. Then, the upper base 27 is assembled. In addition, regarding the order of assembling the clutch member 28 and the upper base 27 on the outer peripheral surface of the lower pipe 11, the upper base 27 may be first assembled on the outer peripheral surface of the lower pipe 11, or the clutch member 28 may be first assembled. You may assemble | attach on the outer peripheral surface of the lower pipe 11. FIG.

  Next, the inner ends of the side walls 21b, 21c, 22b, 22c, 23b, and 23c of the legs 21, 22, and 23 are assembled to the outside of the support pieces 27b and 27c and the support portions 27d and 27e of the upper base 27. In assembling the upper base 27 of the inner end portion of the leg 21 to the support pieces 27b and 27c, the through holes 21b1 and 21c1 of the side wall portions 21b and 21c are formed with the release side of the side wall portions 21b and 21c of the leg 21 facing downward. The bolts 31, which are shaft members, are opposed to the through holes 27b1, 27c1 of the support pieces 27b, 27c, and the through holes 21b1, 27b1, 28b1, from the outside of the side wall 21b of the leg 21 (the left side in FIG. 4 and the upper side in FIG. 5). 28c1, 27c1, and 21c1 are inserted so as to pass through in this order, and their tips protrude from the outside of the side wall 21c of the leg 21 (the right side in FIG. 4 and the lower side in FIG. 5). Then, an adjustment nut 32 that can be manually rotated is screwed into the tip of the bolt 31. On the lower surface of the head of the bolt 31, a quadrangular convex portion 31a (see FIG. 5) having the same shape as the quadrangular through hole 21b1 provided in the side wall portion 21b of the leg 21 is provided. The size of the quadrangular convex portion 31a is slightly smaller than that of the quadrangular through hole 21b1. Further, the thickness of the convex portion 31 a in the axial direction is substantially equal to the thickness of the side wall portion 21 b of the leg 21.

  Therefore, if this convex part 31a is penetrated into the through hole 21b1, the rotation around the axis of the bolt 31 with respect to the leg 21 is restricted. However, even if the convex portion 31a enters the through hole 27b1 of the upper base 27, the outer portion of the through hole 27b1 is formed with a large diameter, so that the bolt 31 and the upper base 27 can be relatively rotated. Yes. As a result, if the adjustment nut 32 is further screwed in, the gap between the support pieces 27b and 27c of the upper base 27 and the support pieces 28b and 28c of the clutch member 28 is narrowed via the side wall portions 21b and 21c of the leg 21. The upper base 27 and the clutch member 28 are fixed on the lower pipe 11, and the inner end portion of the leg 21 is also fixed to the upper base 27. Further, when the tightening of the adjustment nut 32 is released, that is, the screwing of the adjustment nut 32 is loosened, the gap between the support pieces 27b and 27c of the upper base 27 and the support pieces 28b and 28c of the clutch member 28 is widened. The fixing of the base 27 and the clutch member 28 on the lower pipe 11 is released, and the upper base 27 and the clutch member 28 can be moved up and down on the outer peripheral surface of the lower pipe 11. Further, the inner end portion of the leg 21 can also be rotated around the axis of the bolt 31, and the leg 21 can be rotated up and down together with the bolt 31 in a plane including the lower pipe 11 and the leg 21. As a result, the leg 21 can be adjusted to an appropriate position in the vertical direction of the lower pipe 11, adjusted to an appropriate angle with respect to the lower pipe 11, and fixed on the outer peripheral surface of the lower pipe 11.

  In assembling the upper base 27 of the inner end portion of the leg 22 to the support portion 27d, the through holes 22b1 and 22c1 of the side wall portions 22b and 22c are supported by the release side of the side wall portions 22b and 22c of the leg 22 facing downward. The rivet 33, which is a shaft member, is inserted into the through holes 22b1, 27d1, 27d2, and 22c1 in this order from the outside of the side wall portion 21b of the leg 22, and the tip of the rivet 33 is inserted into the leg. It protrudes from the outside of the side wall part 22c of 22. Then, if the tip of the rivet 33 is crushed to prevent the rivet 33 from coming off, the leg 22 can be rotated around the axis of the rivet 33 within the plane including the lower pipe 11 and the leg 22. Supported.

  In assembling the upper base 27 to the support portion 27e of the inner end portion of the leg 23, the side wall portions 23b and 23c of the leg 23 are on the release side and the through holes 23b1 and 23c1 of the side wall portions 23b and 23c are supported by the support portion. 27e is opposed to the through holes 27e1 and 27e2, and the rivet 34, which is a shaft member, enters the through holes 23b1, 27e1, 27e2 and 23c1 from the outside of the side wall portion 23b of the leg 23 in this order, and the tip of the rivet 34 23 protrudes from the outside of the side wall 23c. Then, if the tip of the rivet 34 is crushed to prevent the rivet 34 from coming off, the leg 23 is attached to the upper base 27 so that it can rotate around the axis of the rivet 34 within a plane including the lower pipe 11 and the leg 23. Supported. In addition, rubber leg feet 35, 36, and 37 are fitted into outer end portions (lower end portions) of the legs 21, 22, and 23.

  The stays 24, 25, and 26 are rotatably supported by the lower base 29 assembled to the lower end of the lower pipe 11 at their inner ends, and intermediate between the legs 21, 22, and 23 at their outer ends. Each part is supported rotatably. As shown in FIG. 11, the lower base 29 is integrally formed of a metal material and has a cylindrical main body 29a. The main body 29a is provided with support pieces 29b, 29c, 29d, 29e, 29f, and 29g that protrude outward from the outer peripheral surface of the main body 27a.

  The support pieces 29b and 29c are formed in a flat plate shape and face each other with a small gap. The support pieces 29d and 29e are also formed in a flat plate shape and face each other with a small gap. The support pieces 29f and 29g are also formed in a flat plate shape and face each other with a small gap. The circumferential center positions of the support pieces 29b and 29c, the circumferential center positions of the support pieces 29d and 29e, and the circumferential center positions of the support pieces 29f and 29g are shifted by approximately 120 degrees around the axis of the main body 29a. . The distance between the inner side surfaces of the support pieces 29b and 29c, the distance between the inner side surfaces of the support pieces 29d and 29e, and the distance between the inner side surfaces of the support pieces 29f and 29g are determined between the outer side surfaces of the side wall portions 24b and 24c of the stay 24. The distance, the distance between the outer side surfaces of the side wall portions 24b and 25c of the stay 25, and the distance between the outer side surfaces of the side wall portions 26b and 26c of the stay 26 are substantially equal.

  In the vicinity of the center of the support pieces 29b and 29c, the support pieces 29d and 29e, and the support pieces 29f and 29g, circular through holes provided in the side walls 24b, 24c, 25b, 25c, 26b, and 26c of the stays 24, 25, and 26 The circular through holes 29b1, 29c1, the through holes 29d1, 29e1, and the through holes 29f1, 29g1 having substantially the same diameter as the 24b1, 24c1, 25b1, 25c1, 26b1, 26c1 are provided to face each other. The through holes 29b1, 29c1, 29d1, 29e1, 29f1, and 29g1 are formed in the through holes 24b1, 24c1, and the stays 24, 25, and 26 when the stays 24, 25, and 26 are assembled to the lower base 29, respectively. 25b1, 25c1, 26b1, 26c1 are positioned so as to face each other. However, the through hole 29f1 is not shown.

  And the lower base 29 comprised in this way is the center position of the circumferential direction between support piece 29b, 29c, the center position of the circumferential direction between support piece 29d, 29e, and the center position of the circumferential direction between support piece 29f, 29g. Are fixed on the outer peripheral surface of the lower end of the lower pipe 11 in accordance with the center position in the circumferential direction between the support pieces 27b and 27c of the upper base 27 and the center position in the circumferential direction of the support portions 27d and 27e, respectively. . In fixing the lower base 29, a male screw (not shown) is screwed into a female screw provided in the main body 29a, and the tip of the male screw is brought into contact with the outer peripheral surface of the lower pipe 11 and fixed. In fixing the lower base 29 to the lower pipe 11, a male screw may enter the lower pipe 11 and be fixed, an adhesive may be used, or may be fixed by welding.

  Next, the assembly of the stays 24, 25, 26 to the lower base 29 and the legs 21, 22, 23 will be described. When assembling the lower base 29 and the legs 21 of the stay 24, the release side of the side wall portions 24 b and 24 c of the stay 24 is up, and the inner end portion is inserted between the support pieces 29 b and 29 c of the lower base 29. The through holes 24b1 and 24c1 of the side wall portions 24b and 24c are opposed to the through holes 29b1 and 29c1 of the support pieces 29b and 29c, and the rivet 41 serving as the shaft member is inserted into the through holes 29b1, 24b1, 24c1 and 29c1 from the outside of the support piece 29b. Are inserted so as to pass through in this order, and their tips protrude from the outside of the support piece 29c. When the tip of the rivet 41 is crushed to prevent the rivet 41 from coming off, the stay 24 is attached to the lower base 29 so as to be able to rotate around the axis of the rivet 41 within a plane including the lower pipe 11 and the stay 24. Supported.

  Then, the outer end portion of the stay 24 is inserted between the side wall portions 21b and 21c of the leg 21, and the through holes 24b2 and 24c2 of the side wall portions 24b and 24c are opposed to the through holes 21b2 and 21c2 of the side wall portions 21b and 21c. The rivet 42 that is a shaft member enters the through holes 21b2, 24b2, 24c2, and 21c2 in this order from the outside of the side wall portion 21b, and protrudes from the outside of the side wall portion 21c. If the tip of the rivet 42 is crushed to prevent the rivet 42 from coming off, the stay 24 is supported by the leg 21 so as to be able to rotate around the axis of the rivet 42 within a plane including the lower pipe 11 and the stay 24. Is done. In this state, the adjustment nut 32 is loosened so that the upper base 27 and the clutch member 28 are movable on the outer peripheral surface of the lower pipe 11 in the vertical direction.

  Also, in assembling the stay 25 to the lower base 29 and the legs 22, the release side of the side wall portions 25 b and 25 c of the stay 25 is turned up, and the rivets 43 are used to The end is rotatably assembled to the support pieces 29d and 29e of the lower base 29, and the stay 25 is supported by the lower base 29 so that it can rotate in a plane including the lower pipe 11 and the stay 25. Similarly to the stay 24, the outer end of the stay 25 is rotatably assembled to the intermediate portion of the leg 22 using the rivet 44, and the stay 25 is placed in a plane including the lower pipe 11 and the stay 25. The leg 22 is supported so that it can rotate.

  Also, when assembling the stay 26 to the lower base 29 and the legs 23, the release side of the side wall portions 26 b and 26 c of the stay 26 is turned up, and the rivet 45 is used inside as in the case of the stay 24. The end is rotatably assembled to the support pieces 29f and 29g of the lower base 29, and the stay 26 is supported by the lower base 29 so as to be rotatable in a plane including the lower pipe 11 and the stay 26. Similarly to the stay 24, the outer end of the stay 26 is rotatably assembled to the intermediate portion of the leg 23 using a rivet 46, and the stay 26 is placed in a plane including the lower pipe 11 and the stay 26. It is supported by the leg 23 so that it can rotate.

  Then, after the upper base 27 and the clutch member 28 are moved in the vertical direction of the lower pipe 11 and appropriately positioned, the upper nut 27 and the clutch member 28 are placed on the outer peripheral surface of the lower pipe 11 by tightening the adjustment nut 32. Secure to. Thereby, the height of the inner side edge part of the legs 21, 22, 23 is determined.

  In the above description, after the upper base 27 and the clutch member 28 are assembled to the lower pipe 11 and the legs 21, 22, 23 are assembled to the upper base 27, the lower base 29 is assembled to the lower pipe 11. In addition, the stays 24, 25, 26 are assembled to the lower base 29 and the legs 21, 22, 23. However, after the assembly order is reversed, the lower base 29 is assembled to the lower pipe 11, and the stays 24, 25, 26 are assembled to the lower base 29. Assembly to the pipe 11, assembly of the legs 21, 22, 23 to the upper base 27, and assembly of the stays 24, 25, 26 to the legs 21, 22, 23 may be performed. Further, after the upper base 27 and the lower base 29 are assembled to the lower pipe 11, the legs 21, 22, 23 and the stays 24, 25, 26 may be assembled to the upper base 27 and the lower base 29.

  Thereafter, the middle pipe 12 is adjusted to an appropriate vertical position above the lower pipe 11, and the middle pipe 12 is assembled onto the lower pipe 11 by the lower stopper 14 and the upper stopper 15. In this case, the lower stopper 14 and the upper stopper 15 are respectively assembled in advance on the outer peripheral surfaces of the lower pipe 11 and the middle pipe 12. Further, the upper pipe 13 is adjusted to an appropriate vertical position above the middle pipe 12, and the upper pipe 13 is assembled onto the middle pipe 12 by the lower stopper 16 and the upper stopper 17. Also in this case, the lower stopper 16 and the upper stopper 17 are assembled in advance on the outer peripheral surfaces of the middle pipe 12 and the upper pipe 13, respectively. When the mounting bracket 18 is assembled to the upper pipe 13 and the cymbal 19 is mounted to the mounting bracket 18, the state shown in FIG. 1 is obtained. Then, the performer can play the cymbal 19.

  Next, storage of the legs 21, 22, 23 and the stays 24, 25, 26 will be described. In this case, the adjustment nut 32 is loosened so that the upper base 27 and the clutch member 28 can move up and down on the outer peripheral surface of the lower pipe 11, and the outer ends of the legs 21, 22, and 23 are pushed inward. For example, the legs 21, 22, 23 rotate downward and inward around the bolt 31 and the rivets 33, 34, and at the same time, the inner ends and the outer ends of the stays 24, 25, 26 are also rivets 41, 42, 43. , 44, 45, 46, the legs 21, 22, 23 are folded as shown in FIG. If the outer end portions of the legs 21, 22, 23 are further pushed in, the legs 21, 22, 23 are completely folded as shown in FIG. In this case, the distance between the outer sides of both side walls 24b and 24c of the stay 24, the distance between the outer sides of both side walls 25b and 25c of the stay 25, and the distance between the outer sides of both side walls 26b and 26c of the stay 26 are Since the distance between the inner sides of both side walls 21b and 21c of the leg 21, the distance between the inner sides of both side walls 22b and 22c of the leg 22, and the distance between the inner sides of both side walls 23b and 23c of the leg 23 are smaller. The stays 24, 25, 26 are accommodated in the legs 21, 22, 23.

Here, the simulation result of the weight and rigidity of the legs 21, 22, and 23 in the above embodiment will be described. FIG. 13 (A) is a cross-sectional view of the leg 21 (22, 23) according to the present invention in which the cross-sectional shape using an iron material having a specific gravity of 7.8 g / cm ³ is opened downward to be U-shaped. is there. In this case, the lateral width W of the legs 21 (22, 23) is 15 mm, the height H is 16.6 mm, the plate thickness t is 1.0 mm, and the weight per 1 cm is 3.60 g. The weight of 3.6 g per 1 cm corresponds to 61.2% with respect to the weight of 5.89 per 1 cm of the next belt-like leg 61. FIG. 13B shows a belt-like leg 61 having a rectangular cross-sectional shape using an iron material having a specific gravity of 7.8 g / cm ³ , which is a comparison object with the leg 21 (22, 23) according to the present invention. FIG. In this case, the lateral width (thickness) A is 4.76 mm, the height B is 15.87 mm, and the weight per 1 cm is 5.89 g.

Then, as shown in Table 1 below, the vertical sectional moment I of the U-shaped leg 21 (22, 23) is 1,605.1 mm ⁴ , and the lateral sectional secondary moment I is 1, It was 812.7 mm ⁴ .

Further, as shown in Table 2 below, the longitudinal sectional secondary moment I of the belt-like leg 61 was 1,585.5 mm ⁴ , and the lateral sectional secondary moment I was 142.6 mm ⁴ .

  As can be seen from Table 1 and Table 2, the vertical moment of inertia of the U-shaped leg 21 (22, 23) is 61.2% compared to the belt-like leg 61. Nevertheless, it has substantially the same cross-sectional second moment as the leg 61. Further, the U-shaped leg 21 (22, 23) is much larger than the leg 61 with respect to the transverse moment of inertia in the lateral direction. Thus, it can be seen that the use of the U-shaped legs 21 (22, 23) is advantageous in terms of weight and rigidity as compared with the case where the legs 61 are used.

  According to the musical instrument stand configured as described above, the legs 21, 22, and 23 are provided with a bent portion in a flat plate member having a flat plate portion at least in part, and the cross-sectional shape is U-shaped downward. Since the vertical and lateral rigidity is kept large to some extent, the cross-sectional area of the legs 21, 22, 23 can be reduced, and the legs 21, 22, 23 and thus the weight of the musical instrument stand can be reduced. Can be achieved. Further, when the musical instrument stand is stored, the adjustment nut 32 is loosened and the outer ends of the legs 21, 22, 23 are rotated toward the lower pipe 11, so that the legs 21, 22, 23 are attached to the lower pipe 11. The direction can be the same as the extending direction. At the time of storage, the stays 24, 25, and 26 are stored in the legs 21, 22, and 23, so that the instrument stand can be prevented from being bulky when stored.

  According to the musical instrument stand configured as described above, the elastically deformable resin clutch member 28 is interposed between the outer peripheral surface of the lower pipe 11 and the inner peripheral surface of the upper base 27. Thus, the upper base 27 is securely fixed on the outer peripheral surface of the lower pipe 11.

  Further, in the musical instrument stand configured as described above, the support pieces 27b and 27c are provided on the upper base 27, the bolts 31 are passed through the support pieces 27b and 27c, and the side wall of the leg 21 is adjusted by the adjusting nut 32. The upper base 27 is assembled so that the inner ends of the portions 21b and 21c can be rotated and fixed. Further, the upper base 27 and the clutch member 28 can be moved up and down on the outer peripheral surface of the lower pipe 11 by changing the distance of the gap between the support pieces 27b and 27c using the bolt 31 and the adjusting nut 32. Or fixed on the outer peripheral surface of the lower pipe 11. In this manner, the bolt 31 and the adjusting nut 32 have a function of rotatably supporting the legs 21 on the support pieces 27b and 27c of the upper base 27, and the base body 27a of the upper base 27 with respect to the lower pipe 11. Thus, it is possible to simplify the configuration of the upper base 27 portion. In particular, the rotation of the bolt 31 about the axis of the leg 21 with respect to the leg 21 is achieved by the engagement between the convex portion 31a provided below the head of the bolt 31 and the through hole 21b1 provided at the inner end of the side wall 21b of the leg 21. Since the regulation is performed, the adjustment nut 32 can be easily rotated.

  The apparatus according to the present invention is not limited to the above embodiment, and can be implemented with appropriate modifications.

  In the said embodiment, the cross-sectional shape of leg 21,22,23 was made into U shape, respectively. However, instead of this, if the long legs 21, 22, 23 are opened at the bottom so that a bent part is provided on a flat member having a flat part at least in part, the cross-sectional shape is It does not have to be U-shaped. For example, the entire cross-sectional shape of the upper wall portions 21a, 22a, and 23a may be bent into a semicircular shape, or may be changed to a polygonal shape by changing the number of bending positions. Moreover, it is good also as what has a bending part in the one part or the whole of a flat member not only by a bending process but by making it an irregular shape by extrusion molding, casting, forging, etc., or another method. Here, the “bending portion” refers to a place where the normal direction of the plate surface changes in the flat plate-like portion, for example, “T-shape”, “H-shape”, “π-shape” cross-sectional shapes by extrusion molding. It is good. Furthermore, the flat member may or may not have a uniform thickness. That is, the leg may be a long one with the lower part opened.

  Moreover, in the said embodiment, while providing the square-shaped through-hole 21b1 in the inner side end of the side wall part 21b of the leg 21, and providing the convex part 31a of the cross-sectional square shape in the lower surface of the head of the volt | bolt 31, The rotation around the axis of the bolt 31 with respect to the leg 21 was regulated by fitting the through hole 21b1 of the portion 31a. However, if the rotation of the bolt 31 relative to the leg 21 is restricted by the fitting of the convex portion 31a to the through hole 21b1, the shape of the convex portion 31 and the through hole 21b1 is changed to a polygon other than a quadrangle. Good.

  In the above embodiment, the cross sections of the stays 24, 25, and 26 are also U-shaped in addition to the legs 21, 22, and 23. However, the stays 24, 25, and 26 do not require a great rigidity. The cross sectional shape may be various shapes such as a rectangle, a square, and a circle. The stays 24, 25, and 26 are not limited to the bending process, but may have a desired shape by other methods such as extrusion, casting, and forging.

  Moreover, in the said embodiment, the support | pillar comprised the lower pipe 11, the middle pipe 12, and the upper pipe 13 in the cylindrical shape. However, the lower pipe 11, the middle pipe 12, and the upper pipe 13 may have any cross-sectional shape as long as they extend in the vertical direction. For example, a pipe having a rectangular cross section can be used. Moreover, in order to expand and contract, it is composed of a plurality of pipes, but may be composed of a single pipe. Furthermore, a support | pillar may be comprised not only with a hollow pipe but with a solid member (a single member or a plurality of members may be connected).

  Moreover, in the said embodiment, the distance of the clearance gap between the support pieces 27b and 27c of the upper base 27 is changed using the volt | bolt 31 and the adjustment nut 32, and the upper base 27 and the clutch member 28 are made lower. The pipe 11 can be moved up and down on the outer peripheral surface or fixed on the outer peripheral surface of the lower pipe 11. However, instead of this, a through hole in which a female screw is formed on the inner surface penetrating in the lateral direction is provided in the side portion of the upper base 27, and a through hole communicating with the through hole is provided in the clutch member 28, The male screw is passed through the upper base 27 and the through hole of the clutch member 28 and is brought into contact with or enters the side surface of the lower pipe 11 to fix the upper base 27 and the clutch member 28 on the outer peripheral surface of the lower pipe 11. In addition, the abutment or the intrusion may be canceled to allow the upper base 27 and the clutch member 28 to move up and down on the outer peripheral surface of the lower pipe 11.

  Further, in the above embodiment, the upper base 27 is assembled to the lower pipe 11 so as to be movable and fixed in the vertical direction with respect to the lower pipe 11, and the lower base 29 is fixed to the lower pipe 11. However, instead of this, the upper base 27 may be fixed to the lower pipe 11, and the lower base 29 may be assembled to the lower pipe 11 so as to be movable and fixed with respect to the lower pipe 11. In this case, with the upper base 27 fixed to the lower pipe 11, the lower base 29 is moved in the vertical direction with respect to the lower pipe 11 to adjust the vertical position of the lower base 29, If the base 29 is fixed to the lower pipe, the height of the lower pipe 11 is adjusted, and the lower pipe 11 is erected and supported by the legs 21, 22, and 23.

  Instead of the above, both the upper base 27 and the lower base 29 may be assembled to the lower pipe 11 so as to be movable and fixed in the vertical direction with respect to the lower pipe 11. In this case, one of the upper base 27 and the lower base 29 is fixed to the lower pipe 11, and the other base of the upper base 27 and the lower base 29 is fixed. If the vertical position of the other base is adjusted by moving the base in the vertical direction with respect to the lower pipe 11, the other base is fixed to the lower pipe. Then, the lower pipe 11 is erected and supported by the legs 21, 22 and 23. In short, one of the upper base 27 and the lower base 29 is assembled to the lower pipe 11 so as to be movable in the vertical direction with respect to the lower pipe 11 and fixed thereto. The other base of the bases 27 may be assembled to the lower pipe 11 or fixed to the lower pipe 11 so as to be movable and fixed in the vertical direction with respect to the lower pipe 11.

  In the above embodiment, the clutch member 28 is inserted between the lower pipe 11 and the upper base 27 so that the upper base 27 can be securely fixed on the lower pipe 11. However, the clutch member 28 may be omitted if the upper base 27 can be securely fixed on the lower pipe 11.

  In the above embodiment, three legs 21, 22, 23 and three stays 24, 25, 26 are provided, but four or more legs and stays may be provided. Also, if legs are provided at the lower end of the lower pipe 11 and the legs of the lower pipe are brought into contact with the floor, the ground, the stage, etc., only two legs and stays are provided. You can also In these cases, the legs are assembled to the upper base 27 and the stays are assembled to the lower base 29 and the legs, as in the case of the above embodiment.

  Furthermore, in the above embodiment, the cymbal 19 is fixed to the mounting bracket 18 assembled to the upper pipe 13, but other percussion instruments other than the cymbal 19, such as a tam tom and a cowbell, may be fixed. Moreover, a music stand other than a percussion instrument, a microphone, or the like may be fixed. Furthermore, other items such as a camera and a telescope other than music may be fixed. In short, the stand according to the present invention can be applied to various articles as long as the article can be supported at the upper position.

DESCRIPTION OF SYMBOLS 11 ... Lower pipe, 12 ... Middle pipe, 13 ... Upper pipe, 21, 22, 23 ... Leg, 21a, 22a, 23a ... Upper wall part, 21b, 21c, 22b, 22c, 23b, 23c ... Side wall part, 24, 25, 26 ... stay, 24a, 25a, 26a ... lower wall part, 24b, 24c, 25b, 25c, 26b, 26c ... side wall part, 27 ... upper base, 27a ... main body part, 27b, 27c ... support piece, 27d, 27e ... support portion, 28 ... clutch member, 29 ... lower base, 29a ... main body portion, 29b, 29c, 29d, 29e, 29f, 29g ... support piece, 31 ... bolt, 32 ... adjustment nut

Claims (5)

A column extending in the vertical direction to support the article at the top;
An upper base assembled on the outer peripheral surface of the support column;
A lower base assembled below the upper base and on the outer peripheral surface of the support;
A plurality of elongate legs having a bent portion provided on a flat plate member having a flat plate portion at least in part and opened downward, and each of the support columns on the upper base at each inner end portion. A plurality of legs that are assembled so as to be rotatable within a plane including the outer surface and extend outward from the outer peripheral surface of the support;
A plurality of stays provided corresponding to each of the plurality of legs and formed in an elongated shape, and rotate in a plane including the support column and the corresponding legs on the lower base at an inner end portion. A plurality of stays assembled so as to be rotatable in a plane including the support column and the corresponding leg at an intermediate portion of the corresponding leg at the outer end.
One of the upper base and the lower base is assembled to the support so as to be movable and fixed in the vertical direction with respect to the support,
The other base of the upper base and the lower base is assembled to the support column or fixed to the support column so as to be movable and fixed in the vertical direction with respect to the support column. To stand. A plurality of support portions corresponding to the plurality of legs projecting outward are provided on the outer peripheral surface of the upper base, and a pair of flat plate portions facing each other are provided at inner end portions of the plurality of legs. ,
The stand according to claim 1, wherein the plurality of legs are rotatably assembled to the upper base by a shaft member that penetrates the plurality of support portions and the flat plate portion.   The stand according to claim 1 or 2, wherein a cross-sectional shape perpendicular to the longitudinal direction of the plurality of legs is U-shaped.   4. The distance between inner surfaces facing each other in a direction orthogonal to the longitudinal direction of the plurality of legs is greater than a width in a direction orthogonal to the longitudinal direction of the stay. Stand.   The stand according to any one of claims 1 to 4, wherein a resin clutch member is interposed between the support column and the one base.

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