JP4730231B2 - Musical instrument stand - Google Patents

Description

  The present invention relates to a folding musical instrument stand that supports musical instruments such as keyboard musical instruments.

  2. Description of the Related Art Conventionally, folding instrument stands that support musical instruments such as keyboard instruments are known. For example, in the musical instrument stand of Patent Document 1 below, a pair of upright members are pivotally connected at the center in the longitudinal direction, and when used, it becomes an X shape in front view so that Taisho can be placed on the top. . Further, when folded, the pair of upright members become nearly parallel.

Further, in the musical instrument stand of the following Patent Document 2, the rotating portions of the left and right end portions of the mounting frame that is adjustable in length in the left-right direction are rotatably supported at the upper end portions of the left and right leg frames. . The placement frame is provided with a placement portion, and a keyboard is placed on the placement portion. At the rotating portion, the left and right leg frames can be folded substantially parallel to the mounting frame.
JP 2003-50578 A No. 07-3438

  However, Patent Documents 1 and 2 have a problem that when the stand is folded, members constituting the stand such as a frame are easily brought into contact with each other, and the stand is easily damaged due to the repetition. On the other hand, it may be possible to uniformly apply a protective coating or the like to each member, but this is not preferable because the configuration becomes complicated.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a musical instrument stand that can suppress damage caused by a folding operation without complicating the configuration. .

  In order to achieve the above object, a musical instrument stand according to claim 1 of the present invention is a folding musical instrument stand for supporting a musical instrument, and stands upright on both right and left sides when supporting the musical instrument. Left and right leg portions (21, 22), a left rotation shaft provided at an upper end portion of the left leg portion, a right rotation shaft provided at an upper end portion of the right leg portion, and a left member ( The UPL) and the right side member (UPR) are connected to bendable portions (UCON, UCON2, 3, 4) so as to be bendable. ) Is rotatably connected to the left rotation shaft, and the end (44a) of the right member far from the bent portion is rotatably connected to the right rotation shaft. A body (UP), the left side member and the right side member of the foldable body are provided to project, The folding body has left and right side receiving portions (46, 47) for receiving the bottom surface of the musical instrument and supporting the musical instrument when the folding body is in a predetermined posture, and the folding body protrudes downward as compared with the predetermined posture. And the musical instrument stand is in a folded state when the left side receiving part and the right side receiving part come into contact with each other.

Preferably, a second foldable body configured by a second left side member and a second right side member and bent in parallel with the foldable body, and the left side member / the right side member of the foldable body. On the other hand, the left end member / the right side support member (36, 37) can be detachably attached to the respective one end portions (36a, 37a), and the second left side member / the second right side member of the second foldable body. The other end of each member is detachable , and the left side support member / the right side support member is attached to the left side member / the right side member of the foldable body. In addition , each of the other end portions is attached to the second left side member / second right side member of the second foldable body, so that the foldable body and the second foldable body are was held in parallel with a predetermined interval, the predetermined posture without the friendly Oritai, is bent Can be maintained (claim 2).

  Preferably, the left side member / the right side member of the foldable body are each provided with a left protrusion / right protrusion for preventing the musical instrument from falling off to the back side when the musical instrument is supported. (50, 51) is provided so that when the musical instrument stand is in a folded state, the left protrusion, the right protrusion, the left receiving part, and the surrounding part surrounded by the right receiving part in plan view ( S1) occurs, and the left support member and the right support member removed are configured to be held upright by being inserted into the enclosure (Claim 3).

  Preferably, the left side member and the right side member of the foldable body are configured to be parallel in a state where the left side receiving portion and the right side receiving portion are in contact with each other (claim 4).

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to claim 1 of the present invention, damage due to the folding operation can be suppressed without complicating the configuration.

  According to the second aspect, the musical instrument can be stably supported.

  According to the third aspect, the support member can be held without providing a dedicated mechanism for standing and holding.

  According to Claim 4, it can fold in the left-right direction compactly.

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

(First embodiment)
FIG. 1 is a perspective view of a musical instrument system to which a musical instrument stand according to a first embodiment of the present invention is applied. In this musical instrument system, a musical instrument main body 10 is supported on a stand 20 which is a musical instrument stand, and a foot keyboard unit 1 is further provided. The foot keyboard unit 1 includes a plurality of foot keys 1a and two pedal devices 1b. The foot keyboard portion 1 is placed on a flat floor surface inside the stand 20. The instrument body 10 is configured as an electronic keyboard instrument and has a two-stage keyboard section. The foot keyboard 1 is electrically connected to the musical instrument main body 10, but wiring for that is not shown.

  The stand 20 is configured to be foldable, and can be changed between a “standing state” in which the instrument body 10 can be supported and a “folded state” suitable for storage. Hereinafter, the front-rear direction and the left-right direction are referred to based on the player in the standing state of the stand 20 shown in FIG. Therefore, the player side is the front side with respect to the instrument body 10, and the key arrangement direction is the "left-right direction".

  FIG. 2 is a perspective view of the stand 20 in a standing state as viewed obliquely from the upper right front. FIG. 3 is a perspective view of the stand 20 in a folded state as viewed obliquely from the upper left rear. FIG. 4 is a rear view of the stand 20 in a folded state. FIG. 5 is a plan view of the stand 20 in a folded state.

  As shown in FIGS. 2 to 5, the stand 20 mainly includes a left column 21, a right column 22, a lower foldable pipe body LP, an upper foldable pipe body UP, and a reinforcement, all of which are mainly made of metal. The members 36 and 37 are assembled so that they are in an erected state in a symmetrical manner. The left column 21 and the right column 22 are formed of straight prisms and are arranged at the left and right front portions.

  Front side receiving portions 25 and 26 made of a soft material such as resin are attached to the upper end portions 21a and 22a of the left column 21 and the right column 22, and further, a buffer portion 27 is provided above the front side receiving portions 25 and 26. , 28 are attached. Grounding legs 23 and 24 are attached to the lower ends 21b and 22b of the left column 21 and the right column 22, respectively, and in contact with the floor surface in the standing state (see FIG. 2).

  The upper foldable pipe body UP is configured by connecting an upper left pipe UPL and an upper right pipe UPR so that they can be bent in a vertical direction at a connecting portion UCON. The lower foldable pipe body LP is configured by connecting a lower left pipe LPL and a lower right pipe LPR so that they can be bent in the vertical direction by a connecting portion LCON. In the standing state shown in FIG. 2, the upper foldable pipe body UP and the lower foldable pipe body LP are both U-shaped in plan view.

  The upper left pipe UPL is an annular member in which a side part 42 extending in the depth direction and a rear part 43 extending in the left-right direction are integrated, and the side part 42 and the rear part 43 form a substantially right angle. The upper right pipe UPR is an annular member in which a side portion 44 extending in the depth direction and a rear portion 45 extending in the left-right direction are integrated, and the side portion 44 and the rear portion 45 form a substantially right angle. Similarly, the lower left pipe LPL includes a side portion 52 and a rear portion 53 that form a right angle, and the lower right pipe LPR includes a side portion 54 and a rear portion 55 that form a right angle.

  The front end portion 42a of the side portion 42 and the front end portion 44a of the side portion 44 are respectively parallel to the top and bottom and left and right top surfaces of the upper end portion 21a of the left column 21 and the upper end portion 22a of the right column 22 (depth). It is connected so as to be rotatable (about an axis along the direction). The front end portion 52a of the side portion 52 and the front end portion 54a of the side portion 54 rotate in parallel to the surfaces along the vertical and horizontal directions with respect to the lower end portion 21b of the left column 21 and the lower end portion 22b of the right column 22, respectively. They are connected as you like.

  Accordingly, when the upper left pipe UPL and the upper right pipe UPR are bent at the connecting portion UCON and the connecting portion LCON, respectively, the upper left pipe UPL, the upper right pipe UPR, the lower left pipe LPL, and the lower right pipe LPR are respectively connected to the side portions 42. , 44, 52, 54 around the axis center. A detailed configuration of a portion that allows the side portions 42, 44, 52, and 54 to be rotatable will be described later with reference to FIG.

  In the standing state shown in FIG. 2, the upper foldable pipe body UP and the lower foldable pipe body LP are connected by detachable and straight reinforcing members 36 and 37. The reinforcing members 36 and 37 are made of, for example, a hollow cylindrical pipe material. The upper end portion 36a and the lower end portion 36b of the reinforcing member 36 are each formed as a tile-shaped end portion obtained by crushing a pipe material, and screw holes are formed in the tile-shaped end portion. The upper end portion 36a and the lower end portion 36b are fixed to the rear portion 43 of the upper left pipe UPL and the rear portion 53 of the lower left pipe LPL with screws 40 and 38, respectively. On the other hand, the upper end portion 37a and the lower end portion 37b of the reinforcing member 37 are also configured in the same manner as the upper end portion 36a and the lower end portion 36b. The upper end portion 37a and the lower end portion 37b are respectively the rear portion 45 of the upper right pipe UPR and the lower right pipe LPR. The rear portion 55 is fixed with screws 41 and 39. Accordingly, the reinforcing members 36 and 37 serve to hold the upper foldable pipe body UP and the lower foldable pipe body LP in parallel at a predetermined interval and to stabilize the standing state of the stand 20. Fulfill.

  A grounding leg 56 projects from the lower part of the rear part 53 of the lower left pipe LPL near the screw 38, and a grounding leg part 57 projects from the lower part of the rear part 55 of the lower right pipe LPR near the screw 39. It is installed. In the standing state, these abut against the floor surface together with the above-described grounding legs 23 and 24 (see FIG. 2), and the stand 20 is erected with four-point support.

  Further, rear receiving portions 46 and 47 project upward from the rear portion 43 of the upper left pipe UPL and the rear portion 45 of the upper right pipe UPR, respectively, and the buffer portion 27 and the upper portions of the rear receiving portions 46 and 47 are provided. The buffer parts 48 and 49 similar to 28 are attached. When the instrument body 10 is supported in the standing state, the buffer portions 27, 28, 48, and 49 abut against the bottom surface of the instrument body 10 and directly support the instrument body 10.

  The buffer parts 27, 28, 48 and 49 are made of a non-slip elastic member such as urethane rubber. Thereby, even if the musical instrument main body 10 is slightly tilted or shaken, the bottom surface of the musical instrument main body 10 is easily maintained in close contact with the buffer portions 27, 28, 48, and 49, and the musical instrument main body 10 is prevented from being displaced and dropped off. Supported in a stable position.

  In the upper foldable pipe body UP, stoppers 50 and 51 are provided so as to protrude upward at respective inner positions in the left-right direction of the rear receiving portions 46 and 47. When the musical instrument main body 10 is moved backward while the musical instrument main body 10 is supported in the standing state, the rear surface of the musical instrument main body 10 comes into contact with the stoppers 50 and 51. Accordingly, the stoppers 50 and 51 prevent the musical instrument body 10 from falling backward.

  The connecting portion UCON connects the right end portion 43a of the rear portion 43 of the upper left pipe UPL and the left end portion 45a of the rear portion 45 of the upper right pipe UPR, and the connecting portion LCON includes the right end portion 53a of the rear portion 53 of the lower left pipe LPL and the lower right pipe. The left end portion 55a of the rear portion 55 of the LPR is connected. In the standing state, the rear part 43 and the rear part 45, and the rear part 53 and the rear part 55 are substantially concentric and straight. On the other hand, since the rear portions 43 and 45 are shorter than the rear portions 53 and 55, in the standing state, the upper end portions 21a and 22a of the left column 21 and the right column 22 are slightly inclined inward in the left-right direction. . The detailed structure of the connection parts UCON and LCON will be described later with reference to FIGS.

  When the stand 20 is changed from the standing state to the folded state, the reinforcing members 36 and 37 are removed, and the upper foldable pipe body UP is bent so that the connecting portion UCON protrudes downward. The lower foldable pipe body LP is bent so that the connecting portion LCON protrudes upward (see FIG. 3). When the upper foldable pipe body UP and the lower foldable pipe body LP are bent, the buffer portion 48 of the rear receiving portion 46 and the buffer portion 49 of the rear receiving portion 47 come into contact with each other (FIG. 4). reference). And when these contact | abut as shown in FIGS. 3-5, both the upper foldable pipe body UP and the lower foldable pipe body LP will be in a complete bending state, and the stand 20 will be in a folding state. Become.

  In this folded state, the left column 21 and the right column 22 are parallel to each other. Further, the upper left pipe UPL, the upper right pipe UPR, the lower left pipe LPL, and the lower right pipe LPR are also parallel to the left column 21 and the right column 22. Moreover, as shown in FIGS. 4 and 5, all of the pipes UPL, UPR, LPL, and LPR are within the range from the left end of the left column 21 to the right end of the right column 22 in the left-right direction. In this way, it can be folded compactly in the left-right direction. Note that the heads of the screws 38, 39, 41, 40, 59 and the like slightly protrude from the above range, but it is desirable that the heads of these screws be completely within the above range.

  When the buffer 48 and the buffer 49 come into contact with each other and the left column 21 and the right column 22 are parallel to each other, the grounding leg 56 and the grounding leg 57 are strictly close to each other. Does not touch. However, in the state where the left column 21 and the right column 22 are parallel, not only the buffer units 48 and 49 but also the grounding legs 56 and 57 may be configured to contact each other.

  In the folded state of the stand 20, as shown in FIGS. 3 and 4, the connecting portion UCON and the rear portions 43 and 45, and the connecting portion LCON and the rear portions 53 and 55 overlap in the vertical direction. That is, since the positions in the depth direction are different between the connecting portion UCON and the connecting portion LCON, and between the rear portions 43 and 45 and the rear portions 53 and 55, the upper foldable pipe body UP and the lower foldable pipe body. Overlap is possible without interfering with LP. Thereby, it is easy to set the length of the rear parts 43, 45, 53, 55 long, and even when the stand 20 in the standing state has a long horizontal dimension, it can be made compact in the vertical direction when folded. .

  As shown in FIG. 2, the stoppers 50 and 51 have a hook shape that protrudes rearward from the rear portions 43 and 45 and then extends upward. Therefore, as shown in FIG. 5, in the plan view, an enclosing portion S1 surrounded by the stoppers 50 and 51 and the rear receiving portions 46 and 47 or a connecting piece 61 (described later) of the connecting portion UCON is generated. Then, the removed reinforcing members 36 and 37 can be inserted into the surrounding portion S1 to be erected. One end of each of the reinforcing members 36 and 37 comes into contact with the floor surface, but is held upright so as not to fall down by the surrounding portion S1 (see FIGS. 3 and 5). Thereby, the reinforcing members 36 and 37 can also be accommodated without being bulky. In addition, a band made of rubber or the like is separately provided so that when the stand 20 is stored, the reinforcing members 36 and 37 inserted into the surrounding portion S1 can be held so as to be held together with the rear portions 43 and 45 by the band. Good.

  6A is a longitudinal sectional view of the upper end portion 21a of the left support column 21, and FIG. 6B is a longitudinal sectional view of a modification thereof. 6 (a) and 6 (b), a configuration of a portion where the front end portion 42a of the side portion 42 of the upper left pipe UPL is rotatably supported with respect to the left column 21 will be described.

  As shown in FIG. 6A, the upper end portion 21a is provided with a receiving portion 33, and a rear portion is formed with a hole 21c. The front end portion 42a of the side portion 42 passes through the hole 21c and is inserted to the position of the receiving portion 33 inside the upper end portion 21a. The front end portion 42a is made of a screw material, or is fixed to the front end of the side portion 42 of the upper left pipe UPL by caulking to become the front end portion 42a of the side portion 42. A rotary grip 31 is mounted on the front side of the receiving portion 33. From the rotary grip portion 31, a male screw portion 34 extends in the depth direction through the receiving portion 33 and is screwed to the front end portion 42a of the side portion 42.

  In such a configuration, when the rotary grip 31 is rotated in the tightening direction, the front end portion 42a of the side portion 42 comes into pressure contact with the receiving portion 33, and the rotation of the side portion 42 is restricted. On the other hand, if the rotation gripping part 31 is rotated in the direction of loosening until the front end part 42a is separated from the receiving part 33, the side part 42 is free to the upper end part 21a of the left column 21 with the male screw part 34 as the center of rotation. Can be freely rotated.

  Accordingly, when the stand 20 is transitioned between the standing state and the folded state, the rotary grip 31 is loosened, and when the stand 20 is maintained in any state, the rotary grip 31 may be tightened. In addition, the structure of the other rotating mechanism part, that is, the rotating mechanism part of the side portions 44, 52, 54 with respect to the respective lower end portions 21b, 22b of the right column 22, the upper column 22a, the left column 21, and the right column 22, 6A, the side portions 44, 52, and 54 rotate with the male screw portion similar to the male screw portion 34 as a rotation axis. Then, rotation control and rotation permission operations can be performed by the rotation gripping portions 32, 29, and 30 (see FIG. 2), respectively. The connecting portion UCON, the connecting portion LCON, and the male threaded portion 34 constitute “folding means” that allows the upper foldable pipe body UP and the lower foldable pipe body LP to be bent.

  Note that the configuration shown in FIG. 6B may be employed instead of the configuration shown in FIG. That is, in the configuration shown in FIG. 6A, the receiving portion 33 is formed integrally with the upper end portion 21a. However, in the configuration shown in FIG. 6B, the receiving portion 133 corresponding to the receiving portion 33 is changed to the upper end portion. It is configured separately from 21a. When the rotary gripping portion 31 is rotated in the tightening direction, the rear surface of the receiving portion 133 is pressed against the front surface of the upper end portion 21a, and the front end portion 42a of the side portion 42 is pressed against the inner side surface of the upper end portion 21a. The rotation is restricted.

  FIG. 7 is a front view of the upper connecting portion UCON in the standing state of the stand 20. FIG. 8 is a bottom view of the upper connecting portion UCON in the standing state of the stand 20. FIG. 9 is a cross-sectional view taken along line AA in FIG.

  As shown in FIGS. 7 to 9, the right end 43 a of the rear portion 43 of the upper left pipe UPL and the left end portion 45 a of the rear portion 45 of the upper right pipe UPR are connected by two connecting pieces 61 arranged at the front and rear. Both of the connecting pieces 61 are rotatably connected to the right end portion 43a and the left end portion 45a by connecting pins 62 and 63, respectively. As a result, the connecting piece 61 and the rear portions 43 and 45 are rotatable in parallel with the surfaces along the vertical and horizontal directions around the shaft portions 62a and 63a (see FIG. 9) of the connecting pins 62 and 63. .

  The rear portions 43 and 45 are both configured in a hollow ring shape. A slidable movable bar 60 is inserted in the right end portion 43a. When the stand 20 is erected, the movable bar 60 is interposed from the right end portion 43a to the left end portion 45a. A slit 67 is formed along the longitudinal direction of the lower portion of the right end 43a (see FIGS. 8 and 9). Near the end of the movable bar 60 on the rear 43 side, a threaded portion 66 of a tightening screw 58 is screwed through the slit 67. On the other hand, in the vicinity of the end portion on the rear portion 45 side of the movable bar 60, a screw portion 68 of a tightening screw 59 is screwed through a hole (not shown) of the rear portion 45 (see FIG. 7). Moreover, the groove 60a is formed over the full length in the front part and rear part of the movable bar 60 (refer FIG. 7, FIG. 9).

  Anti-rotation pins 64 and 65 are attached to the front portions of the right end portion 43a and the left end portion 45a, respectively. The tips of the locking pins 64 and 65 (only the tip 64a is shown) are interposed in the concave groove 60a of the movable bar 60, and when the movable bar 60 tries to rotate with respect to the axis along the longitudinal direction, it contacts the concave groove 60a. In close contact, the movable bar 60 is prevented from rotating more than a predetermined amount. The concave groove 60a contributes to avoid interference with the connecting pins 62 and 63 in the right end portion 43a and the left end portion 45a. However, the connecting pins 62 and 63 also have a tip 64a. A similar detent function can be achieved.

  In such a configuration, when the stand 20 is erected, the movable bar 60 cooperates with the tightening screws 58 and 59 to perform the function of firmly connecting and fixing the rear portions 43 and 45, so that the upper foldable pipe body UP is The posture (predetermined posture) corresponding to the standing state can be stably maintained.

  When the stand 20 is shifted from the standing state to the folded state, the fastening screw 58 is loosened and the fastening screw 59 is removed. Then, when the clamping screw 58 is gripped and the movable bar 60 is moved to the left, the clamping screw 58 screw portion 66 slides in the slit 67. If the movable bar 60 is slid and moved until the screw portion 66 comes into contact with the left end of the slit 67, the position becomes the left limit position of the movable bar 60.

  When the movable bar 60 is in the left limit position, the movable bar 60 is completely accommodated in the right end portion 43a. In this state, the removed fastening screw 59 is screwed into the movable bar 60 via the slit 67, so that the movable bar 60 is prevented from coming off from the right end 43a without permission. Further, by tightening the tightening screws 58 and 59, the movable bar 60 is fixed in the right end portion 43a without rattling (see FIG. 3).

  Then, the rear portions 43 and 45 are rotated by 90 ° through the connecting piece 61 in a direction in which the connecting portion UCON protrudes downward to be parallel to each other (see FIG. 3). As a result, the upper foldable pipe body UP is in a folded state corresponding to the folded state of the stand 20.

  On the other hand, in order to return the stand 20 to the standing state, the rear portion 43 and the rear portion 45 are rotated and straightened concentrically, that is, the end surfaces of the right end portion 43a and the left end portion 45a are opposed to each other. Then, with the tightening screw 58 loosened and the tightening screw 59 removed, the movable bar 60 is positioned at the rightmost position where it can move. Here, if the movable bar 60 is moved until the screw portion 66 of the tightening screw 58 contacts the right end of the slit 67, the position becomes the right limit position of the movable bar 60 (see FIG. 8). Then, the tightening screws 58 and 59 are tightened at that position.

  The configuration of the lower connecting portion LCON is exactly the same as that of the connecting portion UCON, except that the folding direction when the stand 20 is folded is convex upward. Further, the extending and folding operations of the upper foldable pipe body UP and the lower foldable pipe body LP are performed in parallel. By the way, the reinforcing members 36 and 37 are attached and detached in a state in which the connecting portions UCON and LCON are fixed and the upper foldable pipe body UP and the lower foldable pipe body LP are made parallel.

  Here, among the elements constituting the connecting portion UCON, the highest position in the standing state is the upper edge 61a of the connecting piece 61 except for the rear portions 43 and 45 (see FIGS. 7 and 9). . The positions of the buffer portions 27, 28, 48, 49 (see FIG. 2) that receive the bottom surface of the instrument body 10 are set higher than the upper edge 61a of the connecting piece 61. This prevents the bottom surface of the musical instrument main body 10 from interfering with the connecting portion UCON when the musical instrument main body 10 is supported.

  According to the present embodiment, when the stand 20 is folded, the left strut 21 and the right strut 22 come close to each other and the upper left pipe UPL and the upper right pipe UPR of the upper foldable pipe body UP, and the lower foldable pipe body LP. Since the lower left pipe LPL and the lower right pipe LPR are parallel to the left column 21 and the right column 22, they can be folded compactly in the left-right direction when not in use. In particular, when the stand 20 is in the folded state, the pipes UPL, UPR, LPL, and LPR all fit in the range from the left end of the left column 21 to the right end of the right column 22 in the left-right direction. The direction size can be made more compact. On the other hand, the upper foldable pipe body UP and the lower foldable pipe body LP are U-shaped in a plan view in the standing state, and the upper ends 21a and 22a and the lower ends of the left column 21 and the right column 22, respectively. 21b and 22b are pivotable, so that a large space for the performer's feet can be secured when used to support the instrument main body 10 with the stand 20 standing.

  Further, the upper foldable pipe body UP and the lower foldable pipe body LP are bent so as to be convex downward and convex upward, respectively, so that the stand 20 is folded in the up-down direction. The size can be made compact.

  Further, the connecting portion UCON and the connecting portion LCON, and the rear portions 43 and 45 and the rear portions 53 and 55 have different positions in the depth direction, and when the stand 20 is folded, the upper foldable pipe is used. The body UP and the lower foldable pipe body LP overlap in the vertical direction. Accordingly, the upper foldable pipe body UP and the lower foldable pipe body LP can be prevented from interfering with each other at the time of bending, and even if the length of the stand 20 in the left-right direction is increased, the vertical direction in the folded state is increased. The size can be made compact.

  Further, in the standing state of the stand 20, the positions of the buffer portions 27, 28, 48, and 49 (see FIG. 2) are higher than the upper edge 61a of the connection piece 61 that is the uppermost part of the elements constituting the connection portion UCON. Therefore, when the musical instrument main body 10 is supported during use, the musical instrument main body 10 is not restricted by the length in the left-right direction or by the shape of the bottom surface of the musical instrument main body 10 to avoid interference with the connecting portion UCON. The instrument body 10 can be prevented from interfering with the connecting portion UCON.

  Further, when the stand 20 is folded, the buffer portion 48 of the rear receiving portion 46 and the buffer portion 49 of the rear receiving portion 47 abut (see FIG. 4), and the upper foldable pipe body UP and the lower foldable pipe are brought into contact. Since the body LP is in a parallel bent state, the contact of the pipe portion between the upper foldable pipe body UP and the lower foldable pipe body LP is suppressed. Thereby, the damage of the stand 20 by folding operation can be suppressed. In addition, the rear receiving portions 46 and 47 also serve to receive the musical instrument main body 10 in the standing state, so that it is not necessary to provide a dedicated part for preventing damage by using the constituent elements, and the configuration is complicated. I don't have to.

  Further, in plan view, the removed reinforcing members 36 and 37 are inserted into a surrounding portion S1 formed by the stoppers 50 and 51 and the rear receiving portions 46 and 47 (or the connecting piece 61 of the connecting portion UCON), Since it is possible to stand and hold (see FIGS. 3 and 5), the reinforcing members 36 and 37 can be held without providing a dedicated mechanism for standing and holding when the stand 20 is not used.

  Moreover, the left support | pillar 21 in a standing state is set by the setting of the length of the side parts 42, 44, 52, 54, and the rear parts 43, 45, 53, 55 of the upper foldable pipe body UP and the lower foldable pipe body LP. Since the inclination angle of the right column 22 can be determined, the degree of freedom in designing the stand 20 is high.

  Further, the right limit position and the left limit position of the movable bar 60 are regulated by the screw portion 66 of the tightening screw 58 (see FIG. 8) coming into contact with the right end and the left end of the slit 67. Is easy, and the screw portion 66 also serves as a stopper, so that the configuration is not complicated. Moreover, since the fastening screws 58 and 59 are used to fix the movable bar 60 by fastening in both the standing state and the folded state of the stand 20, the configuration is not complicated.

  Since the buffer portions 27, 28, 48, and 49 are made of an elastic member, even if the instrument body 10 is slightly tilted or shaken, the instrument body 10 is not easily detached and does not fall off, and the instrument body 10 is supported in a stable position. Can do. From the viewpoint of preventing the instrument body 10 from shifting, at least one, preferably two or more of the buffer portions 27, 28, 48, and 49 may be made of an elastic member that is difficult to slip.

  The lower end portions 36b and 37b of the reinforcing members 36 and 37 are fixed to the lower left pipe LPL and the lower right pipe LPR (see FIG. 2), but the upper foldable pipe body UP and the lower foldable pipe body LP are connected to each other. What is necessary is just to be able to support fixedly with the attitude | position corresponding to a standing state, and it is not restricted to the said structure. For example, the lower end portions 36b and 37b may be grounded to the floor surface, or may be configured to be fixed to the left strut 21, the right strut 22, or a portion fixed thereto.

  In the present embodiment, the upper foldable pipe body UP and the lower foldable pipe body LP are prevented from being rotated by the connecting portions UCON and LCON, and the reinforcing members 36 and 37 are provided to provide the upper foldable. The folded pipe body UP and the lower foldable pipe body LP are stably maintained in a posture corresponding to the standing state. However, if the strength of the connecting parts UCON and LCON is sufficiently high, the upper foldable pipe body UP and the lower foldable pipe body LP can be maintained in a posture corresponding to the standing state of the stand 20, so that reinforcement The members 36 and 37 are not essential. Conversely, as far as the folding function and the function of supporting the instrument main body 10 are concerned, only the turning function is provided in the connecting parts UCON and LCON, and the rear part 43 and the rear part 45, and the rear part 53 and the rear part 55 are respectively provided. The function of fixing may be abolished, and the upper foldable pipe body UP and the lower foldable pipe body LP may be maintained in a posture for supporting the musical instrument main body 10 exclusively by the reinforcing members 36 and 37.

  Speaking only from the viewpoint of avoiding interference between the connecting portion UCON and the instrument main body 10, the axial direction of the center of rotation of the upper foldable pipe body UP, the lower foldable pipe body LP with respect to the left column 21 and the right column 22. In addition, the direction in which the connecting portions UCON and LCON are convex when folded is not limited.

  In addition, in the connection part UCON (refer FIG. 8), the movable bar 60 may be fixed only with the fastening screw 58, and the fastening screw 59 may be abolished. This is because the movable bar 60 overlaps the rear portion 43 and the rear portion 45 in the overlapping regions OL1 and OL2 (see FIG. 7), respectively, and at least one fixing is sufficient to maintain the state. As a further improvement to this, the configuration of FIG. Fig.10 (a) is sectional drawing of the right half part of the modification of the connection part UCON. When the tightening screw 59 is eliminated, it is desirable to configure as shown in FIG.

  That is, the mortar-shaped receiving member 69 is fixed in the rear portion 45 of the upper right pipe UPR. A tapered surface 69 a is formed inside the left end portion of the receiving member 69. On the other hand, a small diameter portion 60d is formed at the right end portion of the movable bar 60 via a step portion 60c, and a tapered surface 60b corresponding to the tapered surface 69a is formed at the right end portion of the small diameter portion 60d. When the movable bar 60 is moved to the right, the taper surface 69a and the taper surface 60b are set to contact each other before the screw portion 66 of the tightening screw 58 contacts the right end of the slit 67 (see FIG. 8). Yes. As a result, the right limit position of the movable bar 60 is regulated by the contact of the tapered surfaces 69a and 60b, and the movable bar 60 is positioned concentrically with the rear portion 45. Accordingly, the right end portion of the movable bar 60 is stabilized without wobbling even if it is not fixed with a fastening screw 59 or the like.

  In addition, the connection part UCON is good also as a reverse structure with respect to the structure demonstrated above in the front-back symmetry, the left-right symmetry, or the front-back and left-right symmetry.

  In the present embodiment, the left column 21 and the right column 22 are rod-shaped, and the pipes UPL, UPR, LPL, and LPR are members whose side portions extend substantially in the depth direction at substantially right angles to the rear portion. By this, it connected with the left support | pillar 21 and the right support | pillar 22 so that rotation was possible in parallel with the surface along an up-down and the left-right direction. However, it is not limited to this.

  FIG.10 (b) is a figure which shows typically the perspective view seen from the back side of the musical instrument stand of a modification. FIG. 2B shows an intermediate state between the standing state and the folded state. As shown in FIG. 2B, plate-like side plates 121 and 122 are provided in place of the left column 21 and the right column 22. Then, the upper foldable pipe body 101 corresponding to the upper foldable pipe body UP is rotatably connected to the rear part of the upper end parts of the side plates 121 and 122, and the rear parts of the lower end parts of the side plates 121 and 122 are connected. Thus, the lower foldable pipe body 102 corresponding to the lower foldable pipe body LP may be rotatably connected. In addition to this, the upper foldable pipe body 103 may be rotatably connected also to the front part of the upper end part of the side plates 121 and 122.

  Here, the upper foldable pipe bodies 101 and 103 are bent so as to protrude downward at the connecting portion at the intermediate position. On the other hand, the lower foldable pipe body 102 is bent so as to protrude forward at the connecting portion at the intermediate position (see the arrow in FIG. 5B).

  Further, although not shown, these pipe bodies 101 to 103 are reinforcing members (not shown) similar to the above-described reinforcing members 36 and 37 (see FIG. 2), and to each other or to the side plates 121 and 122. Connect. In addition, notches 121a and 122a are provided in the lower rear portions of the side plates 121 and 122, and both ends of the lower foldable pipe body 102 are connected to the notches 121a and 122a.

  That is, as shown in an enlarged view of the lower part of the rear portion of the side plate 121 in FIG. 10C, a right angle elbow portion 102 b is formed at the right end portion of the lower foldable pipe body 102. And this right-angle elbow part 102b is screwed by the rotation holding part 123 in the notch part 121a. Thereby, the right-angle elbow part 102b is supported by the side plate 121 so that rotation in parallel with the horizontal direction is possible. Similarly, in the left notch 122a, the left end of the lower foldable pipe body 102 is rotatable in the horizontal direction by the rotating grip 123.

  With such a configuration, when the lower foldable pipe body 102 is bent together with the upper foldable pipe bodies 101 and 103, the thickness of the entire stand is substantially equal to that of the side plates 121 and 122 and the lower foldable pipe body 102 itself. The thickness is combined. If a storage groove for fitting and storing the lower foldable pipe body 102 is formed inside the side plates 121 and 122 along the front-rear direction, the thickness of the entire stand in the folded state is almost the same. , 122. Note that the lower foldable pipe body 102 may be configured to be bent so as to protrude upward, like the above-described lower foldable pipe body LP.

  In addition, as long as the size in the left-right direction when folded is limited to compact, the folding direction of the upper foldable pipe body and the lower foldable pipe body is not limited, and it is bent in different directions. It may be.

  In the first embodiment, the connecting portion UCON is exemplified as a mechanism for maintaining the upper foldable pipe body UP in a posture corresponding to the standing state. However, the configuration of the connecting portion UCON is not limited to this, There are various possibilities. In the following embodiments, other configurations of the connecting portion will be described.

(Second Embodiment)
FIG. 11 is a perspective view of the upper connecting portion viewed obliquely from the upper right front in the musical instrument stand according to the second embodiment of the present invention. In the present embodiment, only the configuration of the connecting portion is different from that of the first embodiment, and the other configurations are the same.

  As shown in FIG. 11, in the connecting portion UCON2 employed in the present embodiment, the right end portion 43a of the rear portion 43 of the upper left pipe UPL and the left end portion 45a of the rear portion 45 of the upper right pipe UPR are one connecting member 71. It is connected with. Both the right end portion 43a and the left end portion 45a are rotatable in the vertical direction with respect to the connecting member 71 by the rotation shaft portion 72. A pin 73 is provided at the front of the right end 43a. A movable body 70 slidable in the longitudinal direction of the right end portion 43a is attached to the right end portion 43a.

  Fig.12 (a) is a right view of the movable body 70 of the connection part UCON2. FIG.12 (b) is sectional drawing which follows the BB line of the figure (a).

  The movable body 70 is formed by assembling an upper member 76 and a lower member 77 which are separate from each other such as metal so that a cylindrical hole 70a is formed. The base end portion 76a of the upper member 76 and the base end portion 77a of the lower member 77 are fixed with screws 79 in a state where the right end portion 43a is inserted into the hole 70a (see FIG. 11). Then, the distal end portion 76b of the upper member 76 and the distal end portion 77b of the lower member 77 are loosened / tightened with the fastening screws 74, 75, so that they can be slidable / fixed with respect to the right end portion 43a to the left end portion 45a. Can do. It should be noted that the upper member 76 and the lower member 77 may be an integral member as long as the distance between the tip portions 76b and 77b can be widened.

  As shown in FIG. 12B, a groove 78 is formed on the front side in the hole 70a along the longitudinal direction of the hole 70a as a relief part of the pin 73 and the rotating shaft part 72. The groove 78 is formed from the right end to the vicinity of the fastening screw 74.

  In such a configuration, in order to place the stand 20 in an upright state, as shown by a two-dot chain line in FIG. 11, the movable body 70 is moved to the right and is placed at a position spanned between the right end portion 43a and the left end portion 45a. Position. The right limit position of the movable body 70 is regulated by the left end 78 a of the groove 78 coming into contact with the pin 73. Since the movable body 70 is provided with the groove 78, the movable body 70 does not interfere with the pin 73 when the movable body 70 moves. Then, the movable body 70 located at the right limit position is fastened and fixed with the fastening screws 74 and 75.

  On the other hand, in order to shift the stand 20 from the standing state to the folded state, the movable body 70 is positioned at the left limit position as shown by a solid line in FIG. Here, the left limit position of the movable body 70 is regulated by the left end of the movable body 70 coming into contact with the upper end portion 36 a (see FIG. 2) of the reinforcing member 36. The movable body 70 is fixed to the right end portion 43a by tightening the tightening screws 74 and 75. In this state, the right end portion 43a and the left end portion 45a are freely bendable via the connecting member 71, and the subsequent folding operation is the same as that of the first embodiment.

  By the way, in the standing state of the stand 20, the positions of the buffer portions 27, 28, 48, and 49 (see FIG. 2) are higher than the upper ends of the fastening screws 74 and 75 that are the uppermost portions of the elements constituting the connecting portion UCON2. Is set higher.

  According to the present embodiment, the same effects as those of the first embodiment can be obtained. Further, since the tightening screws 74 and 75 can be operated from above, it is easy to perform the standing / folding operation.

  Note that the connecting portion UCON2 may have a configuration opposite to the above-described configuration in the front-rear symmetry, the left-right symmetry, or the front-rear and left-right symmetry.

(Third embodiment)
FIG. 13: is the perspective view which looked at the connection part of the upper side in the standing state from diagonally upper right front in the stand for musical instruments which concerns on the 3rd Embodiment of this invention. 14 is a cross-sectional view taken along the line CC of FIG. In the present embodiment, only the configuration of the connecting portion is different from that of the first embodiment, and the other configurations are the same.

  As shown in FIGS. 13 and 14, in the connecting portion UCON3 employed in the present embodiment, the right end portion 43a of the rear portion 43 of the upper left pipe UPL and the left end portion 45a of the rear portion 45 of the upper right pipe UPR are two front and rear. The connection piece 81 is connected. Both the right end portion 43a and the left end portion 45a are rotatable in the vertical direction with respect to the connecting piece 81 by the rotation shaft portion 82. In the standing state of the stand 20, the connecting and fixing member 80 is mounted so as to span the right end portion 43 a and the left end portion 45 a.

  The connecting and fixing member 80 includes an upper plate portion 85, a lower plate portion 86, and a connection portion 87 that connects these at two locations of the front portion, and is integrally configured with a metal or the like in a U shape in a side view. The upper plate portion 85, the lower plate portion 86, and the connection portion 87 are in contact with the upper, lower, and front portions of the outer peripheral surfaces of the right end portion 43a and the left end portion 45a. The connection fixing member 80 is fixed to the right end portion 43 a and the left end portion 45 a by two tightening screws 83. That is, the screw portion 83a of each tightening screw 83 passes through the upper plate portion 85, the right end portion 43a, and the left end portion 45a and is screwed into the lower plate portion 86.

  In such a configuration, in order to transition from the standing state shown in FIG. 13 to the folded state, the two fastening screws 83 are removed, and the connecting and fixing member 80 is moved forward and removed. In this state, the right end portion 43a and the left end portion 45a are freely bendable via the connecting piece 81, and the subsequent folding operation is the same as that in the first embodiment.

  By the way, in the standing state of the stand 20, the positions of the buffer portions 27, 28, 48, and 49 (see FIG. 2) are more than the upper end of the fastening screw 83 that is the uppermost portion of the elements constituting the connecting portion UCON3. It is set high.

  According to the present embodiment, the same effects as those of the second embodiment can be obtained.

  Note that the connecting portion UCON3 may have a configuration opposite to the above-described configuration in the front-rear symmetry, the left-right symmetry, or the front-rear and left-right symmetry.

  In the second and third embodiments, it goes without saying that the structure of the upper connecting part UCON2 or the connecting part UCON3 can also be adopted for the lower connecting part corresponding to the connecting part LCON. Moreover, the structure employ | adopted for an upper connection part and a lower connection part does not need to be the same, which structure (UCON, UCON2, UCON3) demonstrated in the 1st-3rd embodiment is which. You may employ | adopt in combination.

  In the first to third embodiments, the movable bar 60, the movable body 70, and the connection fixing are used as members for maintaining the upper foldable pipe body UP and the lower foldable pipe body LP so as not to bend. Although the member 80 is illustrated, the member that performs such a function may be a member that is movable or detachable with respect to the pipe bodies UP and LP.

(Fourth embodiment)
FIG. 15A is a longitudinal sectional view of the upper connecting portion in the standing state in the musical instrument stand according to the fourth embodiment of the present invention. FIG. 15B is a cross-sectional view of the connecting portion. In the present embodiment, only the configuration of the connecting portion is different from that of the first embodiment, and the other configurations are the same.

  In the connecting portion UCON4 employed in the present embodiment, the right end 43a of the rear portion 43 of the upper left pipe UPL and the left end portion 45a of the rear portion 45 of the upper right pipe UPR are connected by the connecting member 90, and the connecting portion UCON4 is moved downward. It can be rotated to be convex. The right end portion 43a can move in the axial direction with respect to the left end portion 45a, and the movement (fixing restriction) and turning allowance between them can be performed. Therefore, in the present embodiment, it is necessary to adopt the same mechanism as that of the connecting portion UCON4 for the lower connecting portion LCON.

  FIG. 16A is a front view showing a state where the upper left pipe UPL and the rear parts 43 and 45 of the upper right pipe UPR are rotatable in the connecting portion UCON4. FIG. 6B is a partial front view showing a state in which the upper left pipe UPL and the rear parts 43 and 45 of the upper right pipe UPR are slightly rotated in the connecting portion UCON4.

  As shown in FIGS. 15A and 15B, a cylindrical fixed column 94 made of resin or the like is provided on the inner peripheral side of the left end portion 45a, and a metal engagement member is provided inside the fixed column 94. The piece 96 is fixed internally by bonding or the like. The left end portion of the fixed column 94 protrudes leftward from the left end portion 45a (see FIG. 16A). The left end portion of the engagement piece 96 protrudes leftward from the fixed column 94. A screw hole 96b is formed in the engagement piece 96, and the fixing screw 99 is screwed into the screw hole 96b via the left end 45a and the fixing column 94 (see FIG. 15B). The engaging piece 96 and the fixing column 94 are always fixed to the left end portion 45a.

  On the other hand, on the inner peripheral side of the right end portion 43a, a fixing column 93 made of a cylindrical resin or the like is internally fixed by adhesion or the like. A metal engagement piece 95 is slidably inserted in the longitudinal direction of the fixed column 93 inside the fixed column 93. The right end portion of the engagement piece 95 protrudes to the right from the fixed column 93. A slit 95c is formed in the engagement piece 95 along the longitudinal direction thereof. A screw hole 95 b is formed at the left end of the engagement piece 95.

  As shown in FIG. 15B, the right end 43a is provided with a tightening screw 98 from the rear. That is, the screw portion 98a of the tightening screw 98 passes through the rear portion of the right end portion 43a and the holes (not shown) of the fixing column 93, and further, the right end portion of the slit 95c, and is provided in the front portion of the right end portion 43a. Screwed into the female screw. Therefore, the engagement piece 95 can be relatively displaced in the longitudinal direction of the right end portion 43a with respect to the one in which the tightening screw 98, the right end portion 43a and the fixing column 93 are integrated.

  Further, the tightening screw 97 is screwed into the screw hole 95b (see FIG. 15A) through the meat portion on the rear surface side of the right end portion 43a and the holes (not shown) of the fixing column 93. In the standing state of the stand 20, the left end portion can be secured by tightening the tightening screws 97 and 98 while maintaining the state where the right end surface 43ab of the right end portion 43a and the left end surface 45aa of the left end portion 45a are in contact with each other. 45a and the right end portion 43a are concentric and the fixed state is stably maintained.

  The engaging pieces 95 and 96 are connected to the connecting member 90 so as to be rotatable in the vertical direction about the rotating shaft portion 92. A contact piece 91 for restricting rotation is formed integrally with the lower portion of the connecting member 90.

  In the standing state shown in FIG. 15, an annular portion 43aa on the right side of the fixed column 93 of the right end portion 43a covers the connecting member 90 and also covers the left end portion of the fixed column 94, and the right end portion 43a. The right end surface 43ab is in contact with the left end surface 45aa of the left end portion 45a.

  In such a configuration, in order to make a transition from the standing state shown in FIG. 15 to the folded state, the same operation is simultaneously performed for a lower connecting portion (not shown) having the same configuration. First, the tightening screw 97 is removed from at least the screw hole 95b. Then, the right end portion 43a can move to the left while being separated from the left end portion 45a. That is, since the slit 95c is formed in the engagement piece 95, the right end portion 43a can be moved until the screw portion 98a of the tightening screw 98 comes into contact with the left end of the slit 95c. The position where the screw portion 98a contacts the left end of the slit 95c is the left limit position of the right end portion 43a.

  When the right end portion 43a reaches the left limit position, as shown in FIG. 16A, the connecting member 90 is completely exposed, and the right end portion 43a and the left end portion 45a are freely rotatable. In this state, by tightening the tightening screw 97, the right end portion 43a is prevented from inadvertently moving. The subsequent folding operation is the same as in the first embodiment.

  Here, in this embodiment, when the contact piece 91 is provided at the lower portion of the connecting member 90 and the right end portion 43a and the left end portion 45a are straightened, the right end 95a of the engagement piece 95 and the right end of the engagement piece 96 are provided. 96a (see FIG. 16B) is in contact with the contact piece 91. That is, the upper foldable pipe body UP is allowed to rotate only in a direction in which the connecting portion UCON4 protrudes downward from a state where the right end portion 43a and the left end portion 45a are straight. Therefore, since the state in which the right end 95a and the right end 96a are in contact with the contact piece 91 is the posture of the upper foldable pipe body UP corresponding to the standing state of the stand 20, the contact piece 91 and the like in the above posture. The function of temporarily fixing the upper foldable pipe body UP is fulfilled.

  By the way, the lower connecting portion is different from the connecting portion UCON4 only in that it can be bent only so that the lower foldable pipe body LP protrudes upward.

  According to the present embodiment, the same effects as those of the first embodiment can be obtained. In addition, since the upper foldable pipe body UP can be bent only downward and can be temporarily fixed in a posture corresponding to the standing state, the standing work of the stand 20 can be easily performed.

  Note that the connecting portion UCON4 may have a configuration opposite to the above-described configuration in the front-rear symmetry, the left-right symmetry, or the front-rear and left-right symmetry.

  In the present embodiment, the fixed end 94 is covered with the annular portion 43aa of the right end portion 43a so that the right end portion 43a and the left end portion 45a are in a fixed state. However, the present invention is not limited to this. That is, the right end portion 43a and the left end portion 45a are configured to be relatively displaceable, and an engaging portion fixed to the right end portion 43a and an engaged portion fixed to the left end portion 45a are engaged. What is necessary is just to comprise so that the right end part 43a and the left end part 45a may be in a fixed state by combining.

(Fifth embodiment)
FIG. 17 (a) is a perspective view seen obliquely from the front showing the standing state of the musical instrument stand according to the fifth embodiment of the present invention. FIG. 17B is a plan view seen from above showing a standing state of the instrument stand.

  A foldable body 115 corresponding to the above-described upper foldable pipe body UP is disposed between the left leg portion 111 and the right leg portion 112. The foldable body 115 is configured such that a plate-like left side member 113 and a right side member 114 are connected to each other so as to be bent downward by the connecting portion UCON4 described in the fourth embodiment. The connecting part UCON4 is provided at two places in the front and rear.

  FIG. 18A is a cross-sectional view taken along the line DD in FIG. FIG. 18B is a partial cross-sectional view showing a folded state of the musical instrument stand. FIG. 18C is a perspective view as seen from an oblique front showing a state in which the left member 113 and the right member 114 are rotatable in the connecting portion UCON4.

  The configuration of the connecting portion UCON4 is the same as that of the fourth embodiment (see FIGS. 15 and 16). Accordingly, in FIG. 18C, the same components are denoted by the same reference numerals. As shown in FIG. 18C, a pipe portion 143 corresponding to the rear portion 43 (see FIGS. 15 and 16) of the upper left pipe UPL is embedded and fixed at the right end portion of the left member 113 in the standing state. The end surface 143ab of the pipe portion 143 corresponds to the right end surface 43ab of the rear portion 43 of the upper left pipe UPL. The end surface 143ab and the right end surface 113b of the left member 113 are formed flush with each other. The annular inner wall 143aa of the pipe portion 143 corresponds to the annular portion 43aa of the right end portion 43a.

  On the other hand, a pipe portion (not shown) corresponding to the rear portion 45 (see FIGS. 15 and 16) of the upper right pipe UPR is embedded and fixed at the left end portion of the right member 114 in the standing state. The fixed pillar 94 is fixed internally. The left end surface of the pipe portion (corresponding to the left end surface 45aa shown in FIG. 15) and the left end surface 114b of the right member 114 are formed flush with each other. The tightening screw 97 and the fixing screw 99 (not shown in FIG. 18) may be omitted. Further, the tightening screw 98 may be provided on the rear side.

  As shown in FIG. 18B, the left side member 113 and the right side member 114 are rotatably connected to the inner side surfaces of the left leg 111 and the right leg 112 by hinges 116 and 117, respectively. ing. On the end surface of the left member 113 close to the left leg 111 and the end surface of the right member 114 close to the right leg 112, square-shaped or L-shaped stoppers 118 and 119 are attached, respectively. (See also FIG. 17 (b)). As shown in FIGS. 17 (a), 17 (b), 18 (a) and 18 (b), the same positions in the front-rear direction as the stoppers 118 and 119 are provided inside the left leg 111 and the right leg 112, respectively. In addition, concave portions 111a and 112a are formed corresponding to the stopper portions 118 and 119, respectively.

  In the standing state of the stand, the instrument main body 10 (see FIG. 1) is placed on the upper surfaces 113a and 114a of the left member 113 and the right member 114, respectively. The protrusions 111b and 112b, which are higher than the upper surfaces 113a and 114a of the left leg 111 and the right leg 112, prevent the instrument body 10 from shifting or dropping in the left-right direction. Therefore, it is sufficient for this portion to be about half the height of the instrument body 10.

  In this configuration, the transition between the standing and folding states of the stand is basically the same as in the fourth embodiment (FIGS. 15 and 16). Therefore, in the standing state, the left member 113 and the right member 114 are horizontal. That is, as in the fourth embodiment, when the left side member 113 and the right side member 114 are urged in a pressing direction from the state shown in FIG. 18C, the engagement piece 95 of each connection portion UCON4, the connection The member 90 and the fixed column 94 enter the pipe portion 143. Then, the fixed pillar 94 slides into the annular inner wall 143aa, and the opposing surfaces of the left member 113 and the right member 114 are opposed to each other and come into contact with each other. 114 is reliably kept horizontal.

  At this time, as shown in FIG. 18A, the stopper portion 118 of the left member 113 is fitted into the recess 111a and abuts on the left bottom of the recess 111a. Although the state of the right member 114 is not shown, similarly, the stopper portion 119 contacts the right bottom portion of the recess 112a. Thereby, even if force is applied from the left in the main stand, the left leg 111 presses the stopper 118 of the left member 113, so that the left leg 111 and the left member 113 are not deformed. Even when a force from the right is applied, the right leg 112 and the right member 114 are not deformed. In other words, the stand is not deformed because a drag force is generated by the contact between the stopper portions 118 and 119 and the concave portions 111a and 112a. Therefore, the stopper portions 118 and 119 cooperate with the connecting portion UCON4 to play a role in stabilizing the standing state of the stand. In addition, in the standing state, the stoppers 118 and 119 are configured such that a part of the stoppers 118 and 119 are in contact with the recesses 111a and 112a so that the side surface of the placed instrument body 10 does not interfere with the stoppers 118 and 119. It is to make it.

  Further, in the standing state, as shown in FIG. 17A, the upper surfaces 113a and 114a of the left member 113 and the right member 114 are flush with each other. Moreover, the connecting portion UCON4 is in the interior of the left member 113 and the right member 114, and is located below the upper surfaces 113a and 114a (see FIG. 18C). Further, portions of the stopper portions 118 and 119 between the left leg portion 111 and the right leg portion 112 are flush with the upper surfaces 113a and 114a (see FIG. 18A). Accordingly, the upper surfaces 113a and 114a serving as the placement surfaces have no components projecting upward from the upper surfaces 113a and 114a, so that the instrument main body 10 can be supported with almost no restrictions on the bottom shape of the instrument main body 10 to be placed. .

  When the left member 113 and the right member 114 are separated from the standing state, as shown in FIG. 18C, the connecting portion UCON4 is exposed, and the bending of the left member 113 and the right member 114 is allowed. It becomes. Then, when the foldable body 115 is bent so as to protrude downward, the main stand is folded as shown in FIG.

  Here, as shown in FIG. 17B, the recess 111a and the recess 112a are displaced in the front-rear direction, and the stopper 118 and the stopper 119 are similarly displaced. Thereby, even in the folded state, the stopper portion 118 and the stopper portion 119 do not interfere with each other (see FIG. 18B). In the folded state, the width of the entire stand in the left-right direction is substantially reduced to the thickness of the left leg 111, the right leg 112, the left member 113, and the right member 114.

  According to the present embodiment, the same effects as in the fourth embodiment can be obtained.

  Note that the amount of protrusion upward of the protrusions 111b and 112b is set as small as possible, and the upper surface TP (see FIG. 17A) of the left leg 111 and right leg 112 is not shown of the musical instrument main body 10. You may comprise so that a leg part may be contact | abutted and the musical instrument main body 10 may be mounted on the upper surface TP. In such a configuration, the stand installation surface EE (see FIG. 17A) and the lower surfaces of the left leg 111 and the right leg 112 are shifted from the left or right direction with respect to the main stand. When such a strong force is applied, the leg portion on the opposite side of the direction of the applied force may be inclined in that direction by separating from the stopper portion on the same side. However, the tilting of the opposite leg can be prevented by the frictional force between the upper surface TP and the leg of the instrument body 10. Such a stand having a more stable structure and a simple structure can also be realized.

  By the way, in each of the above-described embodiments, if the expression is made by paying attention to the operation and state of the connecting portion UCON, the pipes UPL, UPR, LPL, and LPR are rotated by the connecting portions UCON, UCON2, 3, 4, and LCON. The possible state is “to be allowed to be bent” in the operation and state of the connecting portions UCON2, 3, 4, LCON and the reinforcing members 36 and 37 (FIGS. 3 to 5 and FIG. 10 ( b), FIG. 11, FIG. 16, FIG. 18 (c)). On the other hand, setting the pipes UPL, UPR, etc. in a non-rotatable state results in a “prohibit bending state” in the operation and state of the connecting portion UCON, etc. (FIGS. 2, 7, 8, and 9). 13, FIG. 15).

  In each of the above embodiments, the stand 20 is used to support the musical instrument body 10, but the supported musical instrument is not limited to a keyboard musical instrument.

1 is a perspective view of a musical instrument system to which a musical instrument stand according to a first embodiment of the present invention is applied. It is the perspective view which looked at the stand in the standing state from diagonally upper right front. It is the perspective view which looked at the stand of a folding state from diagonally upper left back. It is a rear view of the stand in a folded state. It is a top view of the stand of a folded state. It is the longitudinal cross-sectional view (figure (a)) of the upper end part of a left support | pillar, and the longitudinal cross-sectional view (figure (b)) of the modification. It is a front view of the upper connection part in the standing state of a stand. It is a bottom view of the upper connecting part in the standing state of the stand. It is sectional drawing which follows the AA line of FIG. Sectional drawing (FIG. (A)) of the right half part of the modification of an upper connection part, and the perspective view seen from the back side of the modification of the stand which provided the side plate instead of the left support | pillar and the right support | pillar are shown typically. It is a figure (figure (b)) and the enlarged view (figure (c)) of a side-plate lower part. In the musical instrument stand according to the second embodiment of the present invention, it is a perspective view of the upper connecting portion as viewed obliquely from the upper right front. It is a right view (figure (a)) of the movable body of a connection part, and a sectional view (figure (b)) which meets a BB line of the figure (a). In the musical instrument stand which concerns on the 3rd Embodiment of this invention, it is the perspective view which looked at the upper connection part in the standing state from diagonally upper right front. It is sectional drawing which follows the CC line of FIG. In the musical instrument stand which concerns on the 4th Embodiment of this invention, it is a longitudinal cross-sectional view (figure (a)) of the upper connection part in the standing state, and a cross-sectional view (figure (b)) of the connection part is there. It is the front view (figure (a)) which shows the state where the upper left and the rear part of the upper right pipe were made to turn freely in a connection part, and the partial front view (figure (b)) which shows the state where the rear part rotated a little. . The perspective view (Figure (a)) seen from diagonally forward which shows the standing state of the musical instrument stand which concerns on the 5th Embodiment of this invention, The top view (Figure (b)) which shows the standing state of the musical instrument stand ). FIG. 17B is a cross-sectional view taken along the line D-D in FIG. 17A (FIG. 17A), a partial cross-sectional view showing the folded state of the musical instrument stand, and FIG. It is the perspective view (figure (c)) seen from diagonally forward which shows the state made rotatable.

Explanation of symbols

  10 musical instrument body, 20 stand (stand for musical instrument), 21 left column (left leg), 22 right column (right leg), 21a, 22a upper end, 34 male screw (left pivot, right pivot) 36 reinforcement member (left support member), 37 reinforcement member (right support member), 36a, 37a upper end (one end), 42a, 44a front end, 46, 47 rear receiving portion (left, right receiving portion), 50 stopper (left protrusion), 51 stopper (right protrusion), UP upper foldable pipe body (foldable body), UPL upper left pipe (left member), UPR upper right pipe (right member), UCON, UCON2, UCON3, UCON4 connecting part (folded part), S1 enclosing part

Claims (4)

A folding instrument stand for supporting a musical instrument,
When supporting the instrument, the left and right legs standing upright on both the left and right sides,
A left rotation shaft provided at the upper end of the left leg,
A right pivot provided at the upper end of the right leg,
A left side member and a right side member are configured to be bent at a bent portion, and an end portion of the left side member far from the bent portion is rotatably connected to the left rotation shaft. And a foldable body in which an end portion of the right side member far from the bent portion is rotatably connected to the right rotation shaft,
Protruding to the left side member and the right side member of the foldable body, and having a left side and a right side receiving part for receiving the bottom surface of the instrument and supporting the instrument when the foldable body is in a predetermined posture. ,
The folding body is bent so as to protrude downward relative to the predetermined posture, and the left-side receiving portion and the right-side receiving portion are in contact with each other so that the musical instrument stand is in a folded state. A musical instrument stand characterized by being constructed. A second foldable body composed of a second left side member and a second right side member and bent in parallel with the foldable body, and the left side member / the right side member of the foldable body A left-side support member / right-side support member whose one end is detachable, and each other end is detachable from the second left-side member / second right-side member of the second foldable body; The left side support member / the right side support member have their one end portions attached to the left side member / the right side member of the foldable body , and each other end portion of the left side support member / the right side support member has the first end. By being attached to the second left side member / second right side member of the two foldable bodies, the foldable body and the second foldable body are held in parallel at a predetermined interval, and the 2. The folded body can be maintained in the predetermined posture without being bent. Stand for musical instruments.   The left side member / the right side member of the foldable body are provided with a left protrusion / right protrusion, respectively, for preventing the musical instrument from dropping off to the back side when the musical instrument is supported. When the musical instrument stand is in a folded state, the left side protrusion, the right side protrusion, the left side receiving part, and the surrounding part surrounded by the right side receiving part are generated in plan view, and the left side support is removed. The musical instrument stand according to claim 2, wherein the member and the right support member are configured to be held upright by being inserted into the enclosure.   The structure according to claim 1, wherein the left side member and the right side member of the foldable body are configured to be parallel in a state where the left side receiving portion and the right side receiving portion are in contact with each other. The musical instrument stand according to any one of the preceding claims.

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