Fixing support jig and method for fixing and supporting inner and outer pipes

Abstract

The tubular base portion (12) is interposed between an inner pipe (X1) and an outer pipe (X2) which are fitted together with each other, and has a through hole (32) on its outer peripheral surface. The tubular base portion is composed of a first outer fitting portion which is fitted onto the outer pipe, the inner peripheral surface of which faces the outer peripheral surface of the outer pipe with a first predetermined clearance, and a second outer fitting portion which is fitted onto the inner pipe, the inner peripheral surface of which faces the outer peripheral surface of the inner pipe with a second predetermined clearance. The tubular base portion further comprises a pressing load receiving portion (25), a pressing body (14) which is provided with a pressing end surface capable of being pressed against the outer peripheral surface of the inner pipe, and a pressing member which is pressed against the pressing load receiving portion. and a pressing load application section (16) that applies a pressing load, and after adjusting the fitting position of the inner tube relative to the outer tube, the pressing load application section presses a pressing body toward the inner tube via a pressing load receiving surface through a through hole in a tubular base section that is set at a desired rotational position centered on the longitudinal direction of the inner and outer tubes, thereby bringing the pressing end face into surface contact with the outer peripheral surface of the inner tube, and pressing and fixing the outer peripheral surface of the inner tube opposite to the surface contact section of the pressing end face with the inner tube against the inner peripheral surface of the outer tube or the inner peripheral surface of the tubular base section.

Description

[Technical field]

[0001] The present invention relates to a fixing support jig and a method for fixing and supporting inner and outer tubes, and more particularly to a fixing support jig and a method for fixing and supporting inner and outer tubes that are applied to a music stand and have a simple structure to improve usability when adjusting the stand height. [Background technology]

[0002] The inventor of the present application has proposed in Patent Document 1 a length adjustment jig that is simple in structure and easy to operate, and that is capable of adjusting the overall length of the inner tube and the outer tube.

[0003] The length adjustment jig of the present invention is a length adjustment jig interposed between an inner tube and an outer tube which are fitted to each other, and has a pair of through slits spaced apart from each other on the outer peripheral surface of the outer tube, a female screw portion between the pair of through slits, a pressing portion which is positioned on the outer peripheral surface of the outer tube and passes through the pair of through slits to come into contact with the outer peripheral surface of the inner tube, and a fastening screw portion which can press and fix the pressing portion against the outer peripheral surface of the inner tube, and the fastening screw portion has a male screw portion which can be screwed into the female screw portion, and a pressing portion housing slot which has an opening facing the inner peripheral surface of the outer tube and protrudes to the outside of the outer tube after adjusting the fitting position of the inner tube relative to the outer tube. Without providing a gap, the male threaded portion is screwed into the female threaded portion by the fastening screw portion, while the pressing portion is passed through the pair of through slits to be pressed and fixed against the outer peripheral surface of the inner tube.

[0004] According to the length adjusting jig having the above-mentioned configuration, the length of the fitting portions of the inner and outer tubes that are fitted together can be adjusted by the female thread portion provided on the outer surface of the outer tube, at least one through hole within a predetermined range from the female thread portion, at least one pressing portion that passes through the through hole from the outer peripheral surface of the outer tube and contacts the outer peripheral surface of the inner tube, and a fastening screw portion that can press and fix the pressing portion against the outer peripheral surface of the inner tube. When adjusting, the tip surface of the pressing part is adjusted so that it can make surface contact with the outer periphery of the inner tube. By making the shape conform to the outer peripheral surface, the fitting position of the inner tube relative to the outer tube can be adjusted. The pressing portion storage space has an opening facing the inner peripheral surface of the outer tube and protrudes to the outside of the outer tube. Without providing a base, the male screw part is screwed into the female screw part provided on the outer peripheral surface of the outer tube by rotating the fastening screw part, and the fastening screw part is screwed in to pass the pressing part within a predetermined range from the female screw part through the through hole, and the tip surface is pressed and fixed to the outer peripheral surface of the inner tube in a surface contact manner. The simple structure does not require excessive fastening force and the overall length of the inner tube and the outer tube can be adjusted so as to be fixed by a simple operation.

[0005] However, when such a length adjustment jig is applied to a music stand for a music stand, a microphone, an amplifier, or the like, the following technical problems arise. In other words, if the fastening screw is on the left side, it is necessary to turn the fastening screw in the opposite direction with the fingers of the left hand, which is inconvenient for right-handed users. However, it is also inconvenient and requires effort to lift a heavy music stand, microphone stand, or amplifier stand and rotate the tube body around its longitudinal axis to move the fastening screw from the left side to the right side. A performer may need to adjust the height of the music stand when changing instruments during a performance, and it is desirable to be able to adjust the height easily using a fastening screw. Furthermore, when multiple musicians are performing, such as in an orchestra or big band, it looks better to the audience if the fastening screws of each musician are oriented in the same direction; however, it is inconvenient to lift heavy music stands, microphone stands, and amplifier stands and adjust the orientation of the fastening screws around the longitudinal direction of the stand. The above problems also occur in medical stands that are equipped with casters on the end of the inner or outer tube opposite the fitting portion of the inner and outer tubes to allow movement, and that support an IV, monitor, or lighting on the end of the outer tube or inner tube opposite the fitting portion of the inner and outer tubes. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 7369944 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0007] In view of the above technical problems, an object of the present invention is to provide a fixing support jig and a fixing support method for inner and outer tubes that have a simple structure and improves usability when adjusting the stand height, and can be applied to music and medical stands. In view of the above technical problems, the object of the present invention is to provide a fixing and supporting tool and a method for fixing and supporting inner and outer tubes that can be applied to music stands and medical stands having existing inner and outer tube fitting structures, and that can firmly fix and hold the inner and outer tubes while improving usability with a simple structure when adjusting the stand height. [Means for solving the problem]

[0008] In order to achieve the above object, the fixing support jig of the present invention comprises: A fixing support jig is interposed between an inner tube and an outer tube, at least one of which has a circular cross section and both of which extend in the vertical direction and are fitted together, and which fixes and supports a heavy object at a predetermined height, a tubular base portion having a through hole on an outer peripheral surface thereof and capable of being fitted onto an outer peripheral surface of one end portion of the outer tube; the tubular base portion includes a first outer fitting portion that extends from the one end portion toward the outer tube and is fitted onto the outer tube with an inner circumferential surface facing the outer circumferential surface of the outer tube with a first predetermined clearance, and a second outer fitting portion that extends from the one end portion toward the inner tube and is fitted onto the inner tube with an inner circumferential surface facing the outer circumferential surface of the inner tube with a second predetermined clearance, a pressing body having a pressing end surface capable of being pressed against an outer circumferential surface of the inner tube; a pressure load applying portion that applies a pressure load to the pressure load receiving portion, When a weight is supported by either the inner or outer tube, the fitting position of the inner tube relative to the outer tube is adjusted according to the specified height of the weight, and then the pressing body is pressed toward the inner tube via the pressing load receiving surface by the pressing load application portion through the through hole of the tubular base portion which is set at the desired rotational position centered on the longitudinal direction of the inner and outer tubes, thereby bringing the pressing end face into surface contact with the outer peripheral surface of the inner tube, and pressing and fixing the outer peripheral surface of the inner tube opposite the surface contact portion of the pressing end face with the inner tube against the inner peripheral surface of the outer tube or the inner peripheral surface of the tubular base.

[0009] In order to achieve the above object, the fixing support jig of the present invention comprises: A fixing support jig is interposed between an inner tube and an outer tube, at least one of which has a circular cross section and both of which extend in the vertical direction and are fitted together, and which fixes and supports a heavy object at a predetermined height, a tubular base portion having an outer circumferential surface thereof including a female screw portion and a pair of through holes sandwiching the female screw portion, the tubular base portion being attached and fixed to an outer circumferential surface of one end portion of the outer tube; the tubular base portion includes a first outer fitting portion that extends from the one end toward the outer tube and fits onto the outer tube with an inner circumferential surface facing the outer circumferential surface of the outer tube with a first predetermined clearance, and a second outer fitting portion that extends from the one end toward the inner tube and fits onto the inner tube with an inner circumferential surface facing the outer circumferential surface of the inner tube with a second predetermined clearance, one of the pair of through holes is provided in the first outer fitting portion and the other of the pair of through holes is provided in the second outer fitting portion, Further, the pressing body has a pressing load receiving portion having a substantially U-shaped longitudinal section and a pressing load receiving surface with a clearance hole provided therein, and a pair of legs spaced apart from each other in the extension direction of the pressing load receiving portion; A fastening screw portion that can be pressed and fixed to the pressing load receiving portion and has a male screw portion that can be screwed into the female screw portion, one of the pair of legs has a pressing end surface that can be pressed against an outer circumferential surface of the inner tube, and the other has a pressing end surface that can be pressed against an outer circumferential surface of the outer tube; When a weight is supported by either the inner or outer tube, the fitting position of the inner tube relative to the outer tube is adjusted according to the specified height of the weight, and then the tightening screw portion is used to penetrate the clearance hole and the male threaded portion is screwed into the female threaded portion, while one of the pair of legs is made to penetrate the through hole of the first outer fitting portion so that the corresponding pressing end face comes into surface contact with the outer peripheral surface of the inner tube, and the outer peripheral surface of the inner tube opposite the surface contact portion of the pressing end face with the inner tube is pressed and fixed against the inner peripheral surface of the outer tube or the tubular base portion, and the other of the pair of legs is made to penetrate the through hole of the second outer fitting portion so that the corresponding pressing end face comes into surface contact with the outer peripheral surface of the outer tube, and pressed and fixed.

[0010] According to the fixing support jig having the above-mentioned configuration, in the inner tube and the outer tube, both of which extend in the vertical direction and are fitted together, a tubular base portion having a pair of through holes on its outer peripheral surface is attached to the outer peripheral surface of one end of the outer tube, sandwiching a female thread portion therebetween, and one leg of a pair of pressing bodies having a substantially U-shaped vertical section is inserted through one of the through holes provided in a first external fitting portion that extends from one end of the outer tube toward the outer tube and is fitted onto the inner tube with an inner peripheral surface facing the outer peripheral surface of the inner tube with a first predetermined clearance, and The leg of the outer tube extends from one end of the outer tube toward the inner tube, and the inner peripheral surface of the leg is inserted through the other through hole provided in the second external fitting portion that is externally fitted onto the outer tube with the inner peripheral surface facing the outer peripheral surface of the outer tube with a second predetermined clearance, and the male threaded portion of the fastening screw portion is screwed into the female threaded portion, thereby making it possible to press the pair of pressing bodies against the pressing load receiving portions of the pressing bodies. When a weight is to be supported by either the inner or outer tube, the fitting position of the inner tube with respect to the outer tube is adjusted according to the predetermined height of the weight, and then the load receiving portion is fastened to the inner tube by the fastening screw portion. the other of the pair of legs is inserted through the through hole of the second outer fitting portion so that the corresponding pressing end face is in surface contact with the outer circumferential surface of the outer tube, and the tubular base portion is pressed and fixed to the outer circumferential surface of the outer tube or the tubular base portion, and the other of the pair of legs is inserted through the through hole of the second outer fitting portion so that the corresponding pressing end face is in surface contact with the outer circumferential surface of the outer tube, and the tubular base portion attached to the outer circumferential surface of one end of the outer tube is free to rotate about the longitudinal direction of the inner and outer tubes until it is screwed in by the fastening screw portion, and the rotation of the tubular base portion is fixed by screwing in the fastening screw portion, and the inner and outer tubes can be fixed and held in place in the longitudinal direction of the inner and outer tubes. When such a fixing support jig is applied to a music stand or a medical stand, the simple structure makes it possible to improve usability when adjusting the stand height.

[0011] Furthermore, when a male thread is provided on the one end of the outer tube, a female thread that can be screwed onto the male thread may be provided on the inner peripheral surface of the tubular base portion. Furthermore, the other pressing end surface preferably has a complementary shape so as to come into close contact with the threaded portion of the outer tube. Furthermore, each end of the pressure load receiving portion is provided with a leg portion extending in a direction opposite to the pressure load receiving surface, The leg has a pressing end surface at a tip thereof, It is preferable that the length from the pressure load receiving surface to the pressing end surface of each of the legs is set in accordance with the first predetermined clearance and the second predetermined clearance.

[0012] In addition, it is preferable to pass the other of the pair of pressing bodies through the through hole of the second outer fitting portion so that the corresponding pressing end face is brought into surface contact with the outer peripheral surface of the outer tube, while the outer peripheral surface of the inner tube opposite the surface contact portion of the pressing end face with the inner tube is pressed and fixed against the inner peripheral surface of the outer tube or the tubular base portion. In addition, the length of each leg is preferably set so that the pressing end faces come into contact with each outer circumferential surface simultaneously when the fastening screws are tightened. Furthermore, it is preferable that the diameter of the second outer fitting portion is set smaller than the diameter of the first outer fitting portion, and that an annular shoulder portion is formed at the connection portion between the first outer fitting portion and the second outer fitting portion, and that the annular shoulder portion is placed on one circumferential end of the outer tube. In addition, the pressing end surface has a hardness such that it is not deformed by being pressed against the outer circumferential surface of the inner tube, The pressing end surface is preferably formed so as to conform to the outer circumferential surface of the inner tube.

[0013] In addition, each of the inner tube and the outer tube is cylindrical, and the outer peripheral surface of the inner tube is pressed and fixed to the inner peripheral surface of the outer tube by pressing and fixing the outer peripheral surface of the inner tube opposite the pressing and fixing portion by the pressing end face against the inner peripheral surface of the outer tube in a vertical line contact manner, and the outer tube is fixed and supported to the inner tube by support at three points. Furthermore, the fastening screw portion has a shank portion and the male screw portion extending downward from a lower surface of the shank portion, The lower surface is formed with an annular surface surrounding the male thread portion, By screwing the male threaded portion into the female threaded portion through the clearance hole, the lower surface of the shank portion and the pressure load receiving surface of the pressing body come into contact, and the fastening screw portion and the pressing body are integrally pressed and fixed to the inner tube and screwed into the outer tube.

[0014] Furthermore, the fastening screw portion preferably has a head portion at the end of the shank portion opposite the end of the male screw portion that can be held and turned by fingers. In addition, the fixed support jig is made of metal, and the pair of through holes are arranged at a predetermined interval from each other in the longitudinal direction of the inner and outer tubes, extending circumferentially of the inner and outer tubes, respectively, and it is preferable that a heavy object be supported at a predetermined height by either the inner or outer tube. Also, the difference between the length of one of the legs and the length of the other of the legs is preferably set in accordance with the thickness of the outer tube and the difference between the first predetermined clearance and the second predetermined clearance. Furthermore, it is preferable that the inner and outer tubes are fixed and held in a predetermined fitted position by fastening the fastening screw while preventing rotation of the tubular base.

[0015] Furthermore, in the pressing body near the end of the fitting portion between the outer tube and the inner tube of the outer tube, an insertion hole is provided in the thickness direction of the pressing body from the side closer to the end of the outer tube among a pair of opposing side surfaces constituting the pressing body, and a circular A long and narrow hole having a circular cross section and an opening is provided, the long and narrow hole extending through the side surface close to the end of the outer tube, and an insertion rod is further provided which can be inserted into the long and narrow hole from the circular opening, and by inserting the pair of pressing bodies into the pair of through holes, the long and narrow hole communicates with the insertion hole, and by inserting the tip of the insertion rod into the insertion hole, The pair of pressing bodies are held in the pair of through holes, and the elongated hole has a female screw portion, The insertion rod is a set screw that can be screwed into the female threaded portion of the slender hole, and the tip of the set screw is inserted into the insertion hole while being screwed into the slender hole. In this way, the pair of pressing bodies are preferably detachably held within the pair of through holes.

[0016] In order to achieve the above object, the music stand of the present invention comprises: In addition, the device has a fixed support jig as described in claim 1 or claim 2, and is configured to support a music stand, an instrument, a microphone or an amplifier by the end of the inner tube or the outer tube opposite the fitting portion of the inner and outer tubes.

[0017] In order to achieve the above object, the medical stand of the present invention comprises: The device has the fixed support jig described in claim 1 or claim 2, and is provided with casters at the end of the inner tube or the outer tube opposite the fitting portion of the inner and outer tubes, making it movable, and is configured to support an IV drip, a monitor, and lighting by the end of the outer tube or the inner tube opposite the fitting portion of the inner and outer tubes.

[0018] In order to achieve the above object, the method for fixing and supporting an inner and outer tube of the present invention comprises the steps of: a step of fitting a tubular base having an inner circumferential surface with a circular cross section onto an upper end of the outer tube; placing the inner tube within a tubular base or an outer tube; rotating the tubular base about the longitudinal axis of the outer tube to a desired rotational position; a step of pressing the tubular base from the outside toward the outer peripheral surface of the inner tube in a thickness direction of the tubular base to fix the tubular base at a desired rotational position about the longitudinal direction of the outer tube, while pressing the outer peripheral surface of the opposite side of the inner tube against the inner peripheral surface of the tubular base or the outer tube, thereby fixing and holding the inner and outer tubes together in the longitudinal direction; The configuration has the following features.

[0019] Furthermore, it is preferable that the method includes a step of pressing the tubular base from outside toward the outer peripheral surface of the outer tube in the thickness direction of the tubular base to fix the tubular base in a desired rotational position around the longitudinal direction of the outer tube, while pressing the outer peripheral surface of the opposite side of the outer tube against the inner peripheral surface of the tubular base, thereby fixing and holding the inner and outer tubes together in the longitudinal direction. The inner peripheral surface of the tubular base is provided with a reduced diameter portion that is set to be larger than the diameter of the inner tube, and an expanded diameter portion that is set to be larger than the diameter of the outer tube, and an annular shoulder portion is formed at a connecting portion between the reduced diameter portion and the expanded diameter portion, The annular shoulder may be placed on the annular upper end surface of the outer tube, and the tubular base may be rotated about the longitudinal axis of the outer tube to a desired rotational position. BEST MODE FOR CARRYING OUT THEINVENTION

[0020] A first embodiment of a fixing support jig 10 according to the present invention will be described below with reference to the drawings. will be explained in detail. As shown in FIG. 1 to FIG. 8, the fixing support jig 10 is for fixing and supporting the inner pipe X1 and the outer pipe X2, which are fitted together, in the longitudinal direction of the pipes, and is attached and fixed to the outer peripheral surface of one end of the outer pipe X2. The tubular base portion 12 is interposed between the inner tube X1 and the outer tube X2 and can be pressed against the outer circumferential surface 13 of the inner tube X1. The pressing body 14 has a pressing end surface 20 that can be pressed against the outer circumferential surface 13 of the inner pipe X1. The fixing screw portion 16 is configured to be capable of being pressed and fixed. The length, thickness and cross-sectional shape of the inner tube X1 and the outer tube X2 are preferably selected according to the application. As will be described later, the fitting length between the inner tube X1 and the outer tube X2 is adjusted, and the inner tube X1 And the overall length of the outer tube X2 is adjustable.

[0021] For example, the inner tube X1 and the outer tube X2 are each hollow cylindrical, and the inner circumferential surface 17 of the outer tube X2 The outer pipe X2 is inserted into the opening at one end of the outer circumferential surface 13 of the inner pipe X1 from the opening at one end. From the viewpoint of fitting the outer tube X2 to the inner tube X1, the outer tube X2 needs to be hollow, but does not necessarily need to have a circular cross section. The pipe X1 does not need to be hollow, and may be solid, for example, from the standpoint of ensuring strength. When the outer tube X2 is fitted into the inner tube X1, a slight clearance may be provided between the inner peripheral surface 19 of the outer tube X2 and the outer peripheral surface 13 of the inner tube X1, as long as the outer tube X2 is fixed and held in the longitudinal direction relative to the inner tube X1 by the fastening screw portion 16 via the pressing body 14, as will be described later. The slight clearance is, for example, 0.05 mm to 0.1 mm. The tubular base portion 12 has an outer peripheral surface 21 formed with a pair of through slits 32 spaced apart by a distance D. A female screw portion 34 is provided between the pair of through slits 32, and the distance D between the pair of through slits 32 may be selected according to the application of the fixing support jig 10, as will be described later. The tubular base portion 12 is attached and fixed to one end of the outer tube X2. The surface 21 is provided with a pair of through slits 32 spaced apart from each other, and a female screw portion 34 provided between the pair of through slits 32.

[0022] More specifically, the tubular base portion 12 is a hollow circular tube having one end that can be fitted onto one end 28 of the outer tube X2. The inner tube X1 is cylindrical, and at the other end, the inner tube X1 is spaced apart from the outer circumferential surface 21 of the tubular base portion 12 with a predetermined clearance. Then it is inserted. The tubular base portion 12 is preferably made of metal, has a hollow cylindrical shape, and has an inner circumferential surface diameter of the inner tube X1 and The outer diameter of the outer tube X1 is set to be at least larger than the inner diameter of the outer tube X2, but the outer shape is not necessarily cylindrical. For example, it may be cocoon-shaped with a wider central portion. The thickness and the length in the longitudinal direction of the tube may be set appropriately as long as it is possible to fix and support the inner tube X1 and outer tube X2, which fit together, in the longitudinal direction of the tube, and may be, for example, a few millimeters or a few centimeters.

[0023] The tubular base portion 12 is composed of a first outer fitting portion extending from one end toward the outer tube X2 and fitting around the outer tube X2 whose inner circumferential surface faces the outer circumferential surface of the outer tube X2 with a first predetermined clearance, and a second outer fitting portion extending from one end toward the inner tube X1 and fitting around the inner tube X1 whose inner circumferential surface faces the outer circumferential surface of the inner tube X1 with a second predetermined clearance, one of a pair of through hole slits 32 is provided in the first outer fitting portion, and the other of the pair of through hole slits 32 is provided in the second outer fitting portion, the diameter of the second outer fitting portion is set smaller than the diameter of the first outer fitting portion, the second outer fitting portion constitutes a reduced diameter portion, and the first outer fitting portion constitutes an expanded diameter portion, and an annular shoulder portion 17 is formed at the connection portion between the first outer fitting portion and the second outer fitting portion, and the annular shoulder portion 17 can be placed on the annular end face EN of the outer tube X2. The clearance between the inner peripheral surface of the tubular base portion 12 and the outer peripheral surface 13 of the inner tube X1, and the clearance between the inner peripheral surface of the inner pipe X1 and the outer peripheral surface 15 of the outer pipe X2, The lance may be determined, for example, from a perspective appropriate for use as a music stand, and may be, for example, 0.5 mm to 1 mm in each case.

[0024] The pair of through slits 32 are provided so as to extend in the longitudinal direction of the inner and outer tubes X1, X2 at a predetermined interval from each other in the longitudinal direction of the inner and outer tubes X1, X2, respectively. More specifically, each of the pair of through slits 32 is an elongated opening, and the width of the opening need only be such that the pressing body 14 can penetrate in the thickness direction. As will be described later, since the pressing body is fastened and fixed to the outer tube X2 via the fastening screw portion 16, there is no need for the pressing body 14 to penetrate in a tight fit manner into the pair of through slits 32 provided on the outer peripheral surface 16 of the outer tube X2, and clearance is allowed between the periphery of the through slits 32 and the outer peripheral edge of the pressing body 14, particularly the leg portion 18 (described later).

[0025] The pressing body 14 is positioned on the outer circumferential surface 21 of the tubular sleeve portion 12 and passes through a pair of through slits 32 so as to come into contact with the outer circumferential surface 13 of the inner tube X1 and the outer circumferential surface 15 of the outer tube X2. More specifically, the male thread portion 26 of the tightening screw portion 16 forms a pressing body 14 having a generally U-shaped longitudinal cross section, which is provided with a clearance hole portion 24 penetrating in the thickness direction and two legs 18 extending in opposite directions from the clearance hole portion 24. The pressing body 14 has a protrusion 25 on its upper surface 22, which is provided with a clearance hole 24, and by screwing the male thread 26 into the female thread 34, the lower surface 38 of the shank comes into contact with the upper surface of the protrusion 42 of the pressing body 14, whereby the fastening screw portion 16 and the pressing body 14 are integrally pressed and fixed to the inner tube X1 and the outer tube X2 in a screw-in manner. The upper surface of the protrusion 42 functions as a pressing load receiving portion having a pressing load receiving surface. A pair of legs 18 spaced apart from each other in the extension direction of the pressing load receiving portion have pressing end faces 20 that are tip faces of the respective legs 18. The pressing end faces 20 are shaped to conform to the outer circumferential surface 13 of the inner tube X1 and the outer circumferential surface 15 of the outer tube X2 so as to be in surface contact with the outer circumferential surface 13 of the inner tube X1 and the outer circumferential surface 15 of the outer tube X2. For example, If the outer circumferential surface 13 of the inner tube X1 is the outer surface of a cylinder, the pressing end surface 20 has a cross section in the shape of an arc of that diameter. In this case, unlike the fastening screw portion 16, the pressing body 14 itself does not need to be rotated toward the outer circumferential surface 13 of the inner tube X1 and the outer circumferential surface 15 of the outer tube X2. 3. The pressing end surface 20 is aligned with the outer peripheral surface 13 of the inner tube X1 and the outer peripheral surface 15 of the outer tube X2 in a direction that matches the outer peripheral surface 15 of the outer tube X2. Each pressing end surface 20 can be pressed against the outer circumferential surface 15 of the inner pipe X1. 13. There is no need for it to be in close contact with the outer circumferential surface 15 of the outer tube X2.

[0026] The fastening screw portion 16 is configured to be able to press and fix the pressing body 14 against the outer circumferential surface 13 of the inner tube X1. The fastening screw portion 16 has a shank portion 36 and a male thread portion 26 extending downward from a lower surface 38 of the shank portion 36, the male thread portion 26 being capable of being threadedly engaged with the female thread portion 34, and the lower surface 38 is formed with an annular surface 40 that surrounds the male thread portion 26. After adjusting the fitting position of the inner tube X1 relative to the outer tube X2, the male threaded portion 26 is screwed into the female threaded portion 34 using the tightening screw portion 16, while the pressing body 14 is passed through a pair of through slits 32 and pressed and fixed against the outer peripheral surface 13 of the inner tube X1. The fastening screw portion 16 has a head portion 28 that can be gripped and rotated with fingers at the end opposite to the male threaded portion side end of the shank portion 36. The diameter of the head portion 28 is preferably as large as possible so that it can be gripped with little force with the fingers and rotated, and from the viewpoint of preventing slippage, it may be provided with a plurality of shallow grooves spaced apart in the circumferential direction.

[0027] Regarding the use of the fixed support jig 10, the pair of through slits 32 are arranged at a predetermined interval from each other in the longitudinal direction of the inner and outer tubes X1 and X2, respectively, extending in the circumferential direction of the inner and outer tubes X1 and X2, the inner and outer tubes X1 and X2 are oriented in the vertical direction, and either the inner or outer tube X1 or X2 supports a heavy load at a predetermined height. In particular, when the fixing support jig 10 is used to adjust the fitting length of the inner and outer tubes X1 and X2 extending in the vertical direction to fix and hold a heavy object at a predetermined height, the weight of the heavy object is supported by the frictional force between the pressing surface of the pressing body 14 and the outer circumferential surface 13 of the inner tube X1. Resistance of the pressing surface against the outer circumferential surface 13 of the inner tube X1, i.e., the tightening force of the fastening screw portion 16 The greater the force, the more preferable, and therefore the strength required to withstand a large tightening force is required. Therefore, the pressing body 14 and fastening screw portion 16 constituting the fixing support jig 10, as well as the inner and outer tubes X1 and X2, are preferably made of metal.

[0028] As a variant, the fixing support jig 10 may be made of resin from the viewpoint of light weight, and in particular, even if a pair of slit portions and an opening for the female screw portion 34 are provided, it is preferable to ensure a certain thickness from the viewpoint of ensuring the strength around them. In this case, the pair of through slits 32 are preferably provided at a predetermined interval from each other in the circumferential direction of the inner and outer pipes X1, X2 and extend in the circumferential direction of the inner and outer pipes X1, X2, respectively.

[0029] In the following, a method for adjusting the lengths of the inner and outer pipes X1 and X2, particularly in the case of the existing inner and outer pipes X1 and X2 that are fitted together, will be described. a step of fitting a tubular base portion 12 having an inner circumferential surface with a circular cross section onto an upper end portion of an outer tube X2; A step of fitting the inner tube X1 into the tubular base portion 12 or the outer tube X2; rotating the tubular base portion 12 to a desired rotation position around the longitudinal direction of the outer tube X2; From the outside of the tubular base portion 12 in the thickness direction of the tubular base portion 12 toward the outer circumferential surface of the inner tube X1 By pressing, the tubular base portion 12 is fixed at a desired rotational position around the longitudinal direction of the outer tube X2. and pressing the outer peripheral surface of the opposite side of the inner tube X1 against the inner peripheral surface of the tubular base portion 12 or the outer tube X2 while fixing the inner and outer tubes X1, X2 to each other in the longitudinal direction.

[0030] Further, from the outside of the tubular base portion 12 in the thickness direction of the tubular base portion 12, By pressing the tubular base portion 12 against the outer tube X2, the tubular base portion 12 can be rotated as desired around the longitudinal direction of the outer tube X2. While fixing the outer tube X2 in position, the outer peripheral surface of the opposite side of the outer tube X2 is pressed against the inner peripheral surface of the tubular base portion 12. and fixing and holding the inner and outer pipes X1, X2 to each other in the longitudinal direction. The inner peripheral surface of the tubular base portion 12 is provided with a reduced diameter portion that is set to be larger than the diameter of the inner tube X1 and an expanded diameter portion that is set to be larger than the diameter of the outer tube X2. An annular shoulder portion 17 is formed at the connection portion between the reduced diameter portion and the expanded diameter portion. The annular shoulder portion 17 is placed on the annular upper end surface EN of the outer tube X2 to form the tubular base portion. It is preferable to rotate the portion 12 to a desired rotational position around the longitudinal direction of the outer tube X2.

[0031] Hereinafter, a case where the fixing support jig 10 is applied to an existing music stand stand 100 will be described using a music stand as an example of a music stand. As shown in FIG. 11, the existing music stand has an inner tube and an outer tube that fit together, and the upper end of the inner tube X1 A music stand is connected to the inner tube X1, while a tripod 106 is connected to the lower end of the outer tube X2 to hold the music stand upright. The engagement between the lower end of the inner tube X1 and the upper end of the outer tube X2 can be adjusted in height, for example. The screw is inserted horizontally through the through hole of the outer tube X2, and the tip of the screw is inserted into the outer hole of the inner tube X1. It comes into contact with the peripheral surface and is fixed in place.

[0032] First, release the screw and remove the screw. Then, adjust the fitting position between the lower end of the inner tube X1 and the upper end of the outer tube X2 according to the desired height of the music stand F. Then, while supporting the inner tube X1 with one hand at that position, With the other hand, the tubular base portion 12 of the fixing support jig 10 is fitted onto the upper end of the outer tube X2 from one opening, and the annular shoulder portion 17 of the tubular base portion 12 is placed on the upper peripheral end of the outer tube X2. With the tubular base portion 12 covering the upper end portion of the outer tube X2, a predetermined clearance is ensured between the inner peripheral surface of the tubular base portion 12 and the outer peripheral surface of the outer tube X2 and the outer peripheral surface of the inner tube X1. The support portion 12 is supported by the upper end of the outer tube X2 and is free to rotate about the longitudinal direction of the inner and outer tubes. Next, with the other hand, the tubular base portion 12 is rotated about the longitudinal direction of the inner and outer tubes, and positioned at a desired rotational position, for example, a position where the fastening screw 16 can be fastened with the right hand in the case of a right-handed person.

[0033] Next, while supporting the inner tube X1 with one hand, the fastening screw 16 is fastened with the other hand to form a tubular The rotation of the inner and outer tubes X2 of the base portion 12 about the longitudinal direction is locked, and the inner and outer tubes X2 are fixedly supported to each other, and the music stand F is set at a desired height. More specifically, the tightening screw portion is inserted through the clearance hole of the load receiving portion, and the male screw portion is screwed into the female screw portion, while one of the pair of pressing bodies is inserted through the through hole of the first external fitting portion, and the corresponding pressing end face is brought into surface contact with the outer circumferential face of the inner tube X1, and the outer circumferential face of the inner tube X1 on the opposite side to the surface contact portion of the pressing end face with the inner tube X1 is pressed and fixed against the inner circumferential face of the outer tube X2 at the fitting portion of the inner and outer tubes X2. The other of the pair of pressing bodies is inserted through the through hole of the second external fitting portion, and the corresponding pressing end face is brought into surface contact with the outer circumferential surface of the outer tube X2, thereby pressing and fixing the outer circumferential surface of the outer tube X2. Until the fastening screw portion 16 is screwed in, the tubular base portion 12 attached to the outer circumferential surface of one end of the outer tube X2 is free to rotate about the longitudinal direction of the inner and outer tubes X1 and X2. By screwing in the fastening screw portion 16, the rotation of the tubular base portion 12 is fixed, and the inner and outer tubes X1 and X2 are fixed to each other. 1, X2 can be fixed in the longitudinal direction, and such a fixing support jig is used for music speakers. When applied to a stand, the simple structure makes it possible to improve usability when adjusting the stand height. For example, when performing in front of an audience with multiple musical instruments, such as in a big band, the music stands placed in front of each performer are not lightweight, foldable F stands, but rather large, heavy F stands with a large tube diameter. The F-stand is set in an aligned rotational position, creating a unified appearance. This makes it possible to easily When changing the height of the music stand F, the fastening screw 16 is loosened, the fitting position of the inner tube X1 relative to the outer tube X2 is adjusted, and then the fastening screw 16 is refastened. In particular, when lowering the height of the music stand F, By simply loosening the fastening screw 16 by hand and fastening it quickly, the inner tube X1 will not fall due to its own weight. There is no need to support the inner tube X1 with the other hand. In addition, if the existing screws can be used for the fixing support jig, they may be used as they are without preparing new screws.

[0034] As described above, the length of the inner tube X2 fitted into the outer tube X1 is adjusted according to the desired height, and then the tubular The annular shoulder 17 formed at the boundary between the inner narrowing side and the inner expanding side of the base portion 12 is fitted to the outer tube X1. By placing one end of the tubular base portion 12 on the annular peripheral surface 21 of the inner and outer tubes X1 in the longitudinal direction, Since rotation about the center is free, it is possible to easily rotate the tubular base portion 12 to a desired rotation position with one hand while holding the inner tube X2 with the other hand.

[0035] Next, by screwing the fastening screw 16 into the tubular base portion 12, one pressing end face 20 of the U-shaped pressing body 14 comes into contact with the outer circumferential surface 13 of the inner tube X2, and the outer circumferential surface 13 of the inner tube X2 on the opposite side in the diametric direction is pressed against the inner circumferential surface of the inner narrowing side portion 17 of the tubular base portion 12, and the other pressing end face 20 of the U-shaped pressing body 14 comes into contact with the outer circumferential surface 13 of the inner tube X2, and the outer circumferential surface 13 of the inner tube X2 on the opposite side in the diametric direction is pressed against the inner circumferential surface of the inner expanding side portion 19 of the tubular base portion 12, so that the inner tube X2 and the outer tube X1 are each fixed and held relative to the tubular base portion 12. Therefore, even if there is a clearance at the fitting portion of the inner and outer tubes X1, the inner tube X2 and the outer tube X1 are fixed to each other in the longitudinal direction of the tubes. Rotation around the orientation is fixed. For this reason, the difference between the length L1 from the pressing load receiving surface 22 of one pressing end face 20 corresponding to the inner tube X2 and the length L2 from the pressing load receiving surface 22 of the other pressing end face 20 corresponding to the outer tube X1 is determined by the thickness t1 of the outer tube X1 and the clearance between the outer peripheral surface 13 of the inner tube X2 and the inner peripheral surface 23 of the outer tube X1, and is set to be at least larger than the thickness t1 of the outer tube X1. The width w of the outer tube X1 is set to be at least larger than the thickness t1 of the outer tube X1.

[0036] By setting the width of the annular shoulder portion 17 formed at the boundary between the inner narrowing side portion and the inner widening side portion of the tubular base portion 12 to be larger, and by preparing multiple types of U-shaped pressing bodies 14 with different lengths of L1 and L2, it is possible to provide a versatile pressing body for music stands having existing inner and outer tubes X1. By selecting the type of U-shaped pressing body 14 while applying a versatile tubular base portion 12, it is possible to add and attach only the fixing and holding jig having the tubular base portion 12, the U-shaped pressing body 14, and the fastening screw 16, rather than replacing the entire music stand. It is preferable to select the type of U-shaped pressing body 14 so that one pressing end surface 20 and the other pressing end surface 20 come into contact with the outer circumferential surfaces of the inner tube X2 and the outer tube X1 at the same time. Even if the pressing body 14 does not have a pressing force, the inner and outer pipes X1 can be fixed to each other and the tubular base portion 12 can be rotated and fixed by slightly inclining the pressing load receiving surface 22 of the U-shaped pressing body 14.

[0037] On the other hand, the width of the annular shoulder portion 17 of the tubular base portion 12 is strictly set with respect to the existing inner and outer pipes X1 and X2. The fitting of the inner and outer tubes X1 and X2 is performed with a custom-made tubular base portion 12 with no clearance. By this, the U-shaped pressing body 14 presses the inner and outer tubes X1 and X2 into a tubular ball by the fastening screw portion 16. In addition to pressing the inner circumferential surface of the base portion 12, the outer circumferential surface 13 of the inner pipe X2 is pressed against the outer circumferential surface 13 of the outer pipe X2 on the diametrically opposite side of the pressing end surface 20 of the U-shaped pressing body 14 at the fitting portion of the inner and outer pipes X1 and X2. 1 in a line contact manner, and the inner tube X2 and the outer tube X1 are pressed against the inner circumferential surface of the The mounting brackets can be firmly fixed to each other, which is useful for stands that support heavy objects such as music amplifiers and large musical instruments. By screwing in the fastening screw, the inner and outer tubes are fixed to each other via the tubular base portion 12, and the rotation of the inner and outer tubes around the longitudinal direction of the tubular base portion 12 is fixed. Then, by screwing in the set screw 38 from one end of the tubular base portion 12 to the opening of one leg portion 18 of the U-shaped pressing body 14, the male threaded portion of the fastening screw is completely detached from the female threaded portion of the pipe sleeve. Even if the U-shaped pressing body 14 becomes free, the set screw 38 allows the U-shaped pressing body 14 to be fixed to the tubular base portion 12. It is possible to prevent the device from falling off. In the case of medical stands for infusion, monitors, lighting, etc., the lower part of the inner and outer tubes is usually fitted with a cast. The stand is equipped with a monitor and is transported to many treatment sites. During this process, the unevenness of the floor causes the stand to vibrate up and down, so there is a strong need to firmly fix the fitting and fixing parts of the inner and outer tubes. There is also a strong need to adjust the direction of the infusion, monitor, and lighting during treatment. For these reasons, the fixed support jig of the present invention is more effective than a music stand, which is usually transported to a performance site and where there is little need to adjust the height and direction of the music stand, microphone, amplifier, etc. during performance.

[0038] As a modified example, as shown in FIG. 18, the inner and outer tubes X1 and X2 can be fixed and held even in a state where the inner tube X1 is removed from the outer tube X2. More specifically, the pressing end surface 20 of one leg portion 18 of the pressing body 14 is pressed against the outer circumferential surface 13 of the inner pipe X1. The other leg 18 is pressed against the outer circumferential surface of the outer tube X2, and the pressing end surface 20 of the other leg 18 is pressed against the outer circumferential surface of the outer tube X2. It is not necessary to directly fix and hold the inner and outer tubes X2 through the fitting portion of the tube X2, and it is sufficient to indirectly fix and hold the inner and outer tubes X1 and X2 through the tubular base portion 12. It is possible to fix and hold the inner and outer tubes X1, X2 in a state where there is no joint, in other words, in a state where the overall length of the inner and outer tubes X1, X2 is long.

[0039] According to the fixing support jig 10 having the above-mentioned configuration, in the inner tube and the outer tube, both of which extend in the vertical direction and are fitted together, a tubular base portion having a pair of through holes on its outer peripheral surface is attached to the outer peripheral surface of one end of the outer tube, sandwiching a female thread portion therebetween, and one leg portion of the pressing body 14 having a generally U-shaped vertical section is inserted through one of the through holes provided in a first external fitting portion that extends from one end of the outer tube toward the outer tube and is fitted onto the inner tube with an inner peripheral surface facing the outer peripheral surface of the inner tube with a first predetermined clearance therebetween, and One leg extends from one end of the outer tube toward the inner tube and passes through the other through hole provided in a second external fitting portion that is externally fitted onto the outer tube with an inner peripheral surface facing the outer peripheral surface of the outer tube with a second predetermined clearance, and the male threaded portion of the fastening screw portion is screwed into the female threaded portion, thereby making it possible to press the pair of pressing bodies against the pressing load receiving portions of the pressing bodies. When a weight is to be supported by either the inner or outer tube, the fitting position of the inner tube relative to the outer tube is adjusted according to the predetermined height of the weight, and then the load receiving portion is fastened to the inner or outer tube by the fastening screw portion. the other of the pair of legs is inserted through the through hole of the second outer fitting portion so that the corresponding pressing end face is in surface contact with the outer circumferential surface of the outer tube, and the tubular base portion is pressed and fixed to the outer circumferential surface of the outer tube or the tubular base portion, and the other of the pair of legs is inserted through the through hole of the second outer fitting portion so that the corresponding pressing end face is in surface contact with the outer circumferential surface of the outer tube, and the tubular base portion attached to the outer circumferential surface of one end of the outer tube is free to rotate about the longitudinal direction of the inner and outer tubes until it is screwed in by the fastening screw portion, and the rotation of the tubular base portion is fixed by screwing in the fastening screw portion, and the inner and outer tubes can be fixed and held in place in the longitudinal direction of the inner and outer tubes. When such a fixing support jig is applied to a music stand or a medical stand, the simple structure makes it possible to improve usability when adjusting the stand height.

[0040] The second embodiment of the present invention will be described below. In the following description, components similar to those in the first embodiment are given the same reference numerals and their description will be omitted. Below, the characteristic parts of this embodiment will be described in detail with reference to Figs. 9 and 10. The second embodiment of the present invention is characterized in that, in the case where a male thread portion is provided near the upper end of the outer tube X2, The point is that one pressing end face of the U-shaped pressing body is formed into a surface shape that closely contacts the male thread portion. More specifically, in the case where a male screw portion is provided in a spiral shape with a predetermined pitch near the upper end of the outer tube X2, In the above, a female screw portion having a shape complementary to the predetermined helical pitch is provided on one pressing end surface of the U-shaped pressing body, thereby making it possible to reliably prevent the tubular sleeve portion 12 from coming off upward from the outer tube X2 via one pressing end surface of the U-shaped pressing body. In particular, when the outer tube X2 of an existing music stand has a male thread, more specifically, in order to fix and hold the inner and outer tubes X1 and X2 together, instead of screwing from the side as described above, a sleeve having a female thread that can be screwed into the male thread provided on the outer peripheral surface of the outer tube X2 is screwed in the longitudinal direction of the inner and outer tubes X1 and X2, thereby tightening the sleeve from the entire inner peripheral surface of the outer tube X2 to the entire outer peripheral surface of the inner tube X1. When attaching and fixing the outer and inner tubes X1 and X2, it is possible to prepare a tubular base portion 12 having a female thread portion on a specified range of its inner surface that can be screwed into the male thread. In this case, instead of placing the annular shoulder portion 17 of the tubular base portion 12 of the fixing support jig on the upper peripheral end of the outer tube X2 as described above, the female thread portion of the tubular base portion 12 may be screwed into the male thread portion of the outer tube X2, and the tubular base portion 12 may be made free to rotate around the longitudinal direction of the inner and outer tubes X1 and X2.

[0041] The third embodiment of the present invention will be described below. In the following description, components similar to those in the first embodiment are given the same reference numerals and their description will be omitted. Below, the characteristic parts of this embodiment will be described in detail with reference to Figs. 16 and 17. The tubular base portion 12 is rotatably held on the annular end surface EN of the outer tube X2, and the tubular base portion 12 The pressing end surface 20 is pressed against the outer circumferential surface 13 of the inner tube X1 by the fastening screw through the through slit. This is common to the first embodiment in that the inner and outer tubes X1, X2 are fixed and held together by this. However, the first embodiment uses the pressing end faces 20 of both legs 18 of a single U-shaped pressing body 14, whereas this embodiment is characterized in that an L-shaped pressing body 14 is used.

[0042] 17, the L-shaped pressing body 14 has only one leg 18 that can pass through the through slit of the tubular base portion 12, and the other leg 18 in the first embodiment is not provided with a through slit of the tubular base portion 12, and serves as an abutment portion 60 having an abutment surface 62 at its end that abuts against the outer circumferential surface 21 of the tubular base portion 12. The length of the abutment portion 60 is set so that the pressing end surface 20 of the one leg 18 can be pressed against the outer circumferential surface 13 of the inner tube X1. The width w of the annular shoulder 17 is set to the thickness of the outer tube X2, and the tubular base portion 12 is is placed on the annular end face EN of the outer tube X2, and is rotatable about the longitudinal direction of the inner and outer tubes X1 and X2. By tightening the fastening screw 16, the pressing end surface 20 of one leg portion 18 is pressed against the outer circumferential surface 13 of the inner pipe X1, and the opposite side of the pressing end surface 20 of the one leg portion 18 is pressed against the outer circumferential surface 13 of the inner pipe X1. The outer circumferential surface 13 of the inner tube X1 is pressed against the inner circumferential surface of the tubular base portion 12, and the inner At the fitting portion of the outer tubes X1, X2, the outer peripheral surface 13 of the inner tube X1 on the opposite side is pressed against the inner peripheral surface of the outer tube X2, thereby making it possible to fix and hold the inner and outer tubes X1, X2 together. For example, this embodiment can be effectively applied when the instrument is used as a music stand such as a music stand or a microphone stand, and the length of the fitting portion of the inner and outer tubes X1, X2 is adjusted within the range in which the inner and outer tubes X1, X2 are fitted together when adjusting the height of the music stand or the microphone. In addition, when the upper surface 22 of the L-shaped pressing body 14 is pressed toward the outer peripheral surface 13 of the inner tube X1 parallel to the outer peripheral surface 21 of the tubular base portion 12 by the fastening screw portion 16, the abutment portion 60 may be omitted and the L-shaped pressing body 14 may be a complete L-shaped pressing body without the other leg portion 18.

[0043] 16, two L-shaped pressing bodies 14 may be stacked instead of a single U-shaped pressing body 14. More specifically, each L-shaped pressing body 14 has a horizontal portion parallel to the longitudinal direction of the inner and outer tubes X1 and X2 and an orthogonal portion perpendicular to the longitudinal direction, a clearance hole is provided in the horizontal portion, the orthogonal portion forms a leg portion 18, and a pressing end surface 20 is provided at the tip. The two L-shaped pressing bodies 14 are arranged with the horizontal portions stacked on top of each other so that the horizontal portion of one extends toward the orthogonal portion of the other. Therefore, the length l of the horizontal portion is equal to the length of the horizontal portion that abuts against the inner surface of the orthogonal portion of the other. It is set to Unlike the first embodiment, the two L-shaped pressing bodies 14 can be moved and adjusted independently of each other within the corresponding through slits. However, since the two L-shaped pressing bodies 14 can come apart by attaching or detaching the fastening screws, each L-shaped pressing body 14 is provided with a set screw and a corresponding through hole.

[0044] As a result, the male threaded portion of the fastening screw passes through the clearance hole of the upper L-shaped pressing body 14 and the clearance hole of the lower L-shaped pressing body 14, and is fastened to the female threaded portion of the tubular base portion 12, whereby the pressing end surface 20 of the upper L-shaped pressing body 14 is pressed against the outer peripheral surface of the outer tube X2. In both cases, the pressing end surface 20 of the lower L-shaped pressing body 14 is pressed against the outer circumferential surface 13 of the inner pipe X1. As a result, the inner and outer tubes X1, X2 can be fixed and held together in the same manner as in the first embodiment.

[0045] For example, in the first embodiment, both the inner and outer tubes X1 and X2 have a constant circular cross section, and the tubular base portion 12 is placed on the annular end face EN of the outer tube X2, and the tubular base portion 12 is rotated along the length of the tube. In the above description, the inner and outer tubes X1, X2 are fixed to each other while rotating to a desired angle position around the hand direction, and the rotation of the tubular base portion 12 is fixed by the fastening screw portion 16 or the pressing lever 301 via the U-shaped or L-shaped pressing body 14. However, the present invention is not limited to this. For example, the inner tube X1 has a constant circular cross section, while the outer tube X2 has a rectangular shape into which the inner tube X1 can be fitted. For example, in the case of a square constant cross section, hold the tubular base portion 12 with one hand and press the outer tube X2 Without placing it on the annular end face EN, the tubular base portion 12, which is concentric with the inner tube X1, is rotated to a desired angle position around the longitudinal direction of the tube while floating on the side of the inner tube X1 having a circular cross section above, and then the base portion 12 is placed at that height or on the annular end face EN of the outer tube X2 by the fastening screw portion 16 or the pressing lever 301. Alternatively, the inner and outer tubes X1, X2 may be fixed to each other while the rotation of the tubular base portion 12 is fixed.

[0046] The fourth embodiment of the present invention will be described below. In the following description, the same components as those in the first embodiment are given the same reference numerals and the description thereof will be omitted. Below, the characteristic parts of this embodiment will be described in detail with reference to Figs. 12 to 15. The fourth embodiment of the present invention is similar to the first embodiment in that it utilizes a U-shaped pressing body to fix and hold the inner and outer tubes together. However, unlike the first embodiment, it is characterized in that it employs a pressing lever mechanism 300 as an alternative to the fastening screw portion. Specifically, the annular peripheral surface 308 of the rotating portion is curved such that the radius from the axis increases from a first radius to a second radius, and by rotating the pressing lever 301, a pair of pressing bodies 34 can move in the thickness direction of the corresponding through slits 62. By rotating the pressing lever 301 about an axis provided at a predetermined height from the outer peripheral surface 14 of the annular sleeve 12, the pressing body 34 starts to press against the outer peripheral surfaces 14 of the inner and outer tubes X1, X2 at a rotation position corresponding to an intermediate radius between the first radius and the second radius, and finishes pressing against the outer peripheral surfaces 14 of the inner and outer tubes X1, X2 at a rotation position corresponding to the second radius, so that the pressing end face is brought into surface contact with the outer peripheral surfaces 14 of the inner and outer tubes X1, X2, and the outer peripheral surfaces 14 of the inner and outer tubes X1, X2 on the opposite side to the surface contact portion of the pressing end face with the inner and outer tubes X1, X2 are pressed and fixed against the inner peripheral surface of the tubular base portion 12.

[0047] The pressing lever mechanism 300 includes a pressing lever 301 that presses the pressing body 14 against the outer peripheral surfaces 14 of the inner and outer tubes X1 and X2, a pivot 302 that extends parallel to the tubular base portion 12 and enables the pressing lever 301 to rotate between a non-pressing circumferential position and a pressing circumferential position, and a pin 304 that holds the pivot 302 at a predetermined height from the outer peripheral surface of the tubular base portion 12 (tubular base portion). The pressing lever 301 is an integral structure with a substantially tadpole cross section, and has a grip lever portion 303 to be held with the fingers, and a rotating portion 308 which rotates integrally with the grip lever portion 303 around a pivot 302, and the pivot 302 is provided at the center of the rotating portion 308. More specifically, the rotating portion 308 is provided with a notch 310 and separated into rotating portions facing each other, a pin 304 is positioned within the notch 310, and the pivot 302 which penetrates the pin 304 penetrates a through hole with a circular cross section provided at each rotating portion, and each rotating portion, i.e., the pressing lever 301, can rotate around the pivot 302 between a non-pressing circumferential position and a pressing circumferential position. The pressing lever 301 may be made of resin from the viewpoint of light weight. The length of the arm from the center O of the pivot 302 of the grip lever portion 303 is such that the pressing lever 301 can be sufficiently pressed by hand force using the principle of leverage. It is best to define it so that it can be lowered. Each rotating portion has a curved peripheral surface 312, and while the pressing lever 301 rotates around the pivot 302 between a non-pressing circumferential position and a pressing circumferential position, one of the portions of the curved peripheral surface 312 is held in contact with the upper surface 33 of the pressing body 14, so that the rotation of the pressing lever 301 causes the pressing body 14 to move in the thickness direction of the tubular base portion 12 within the through slit 62.

[0048] The pin 304 stands upright with its lower end screwed to the outer circumferential surface 21 of the tubular base portion 12, and is provided with a through hole (not shown) midway through which the pivot 302 can pass. According to the above configuration, by adjusting the amount of screwing of the pin 304 into the tubular base portion 12, the height of the pivot 302 relative to the outer circumferential surface 21 of the tubular base portion 12 is adjusted, and then the pressing lever 301 is rotated about the pivot 302 from the non-pressing circumferential position to the pressing circumferential position, so that the pressing body 14 is pressed against the outer circumferential surfaces 14 of the inner and outer tubes X1, X2 via the curved circumferential surface 312 of the rotating portion 308. Compared to the first to eleventh embodiments using a screw-type rotation by the fastening screw portion 16, by pressing the pressing lever 301 down from the non-pressing circumferential position to the pressing circumferential position with a single touch, it is possible to fix and hold both the inner and outer tubes X1, X2 while maintaining the pressing circumferential position of the pressing lever 301. Conversely, by pressing the pressing lever 301 up from the pressing circumferential position to the non-pressing circumferential position with a single touch, the inner and outer tubes X1, X2 can be moved relative to each other in the longitudinal direction.

[0049] As a modified example, the pin 304 and the pivot 302 may be integrally formed. In other words, the pivots 302 may be provided separately on the outer circumferential surface of the pin 304, extending in opposite directions from diametrically opposite positions, without providing a through hole for the pivot 302 in the pin 304. When there is no need to adjust the height of the pivot 302 from the outer circumferential surface 21 of the tubular base portion 12, the lower end of the pin 304 may be fixed without being provided with a rotatable thread portion.

[0050] In this embodiment, a male threaded portion 335 extending upward for a predetermined height is provided on the upper surface of the U-shaped pressing body 14, and a ring plate 314 having an opening in the center is provided on the inner surface of the opening with a female threaded portion 337 that can be screwed into the male threaded portion 335. More specifically, the ring plate 314 has an annular upper surface 315 and an annular lower surface 316, and a female thread portion 337 is provided along the distance between the annular upper surface 315 and the annular lower surface 316, i.e., along the entire thickness of the ring plate 314. The thickness of the ring plate 314 is set to be shorter than the length of the male thread portion 335, and the diameter of the ring plate 314 needs to be set so that the curved peripheral surfaces 312 of both rotating portions are held in contact with the annular upper surface 315 of the ring plate 314. Thus, by adjusting the amount of screwing of the female screw portion 337 of the ring plate 314 into the male screw portion 335 of the U-shaped pressing body 14, the height of the annular upper surface 315 of the ring plate 314, with which the curved peripheral surface 312 is in contact and held, from the outer peripheral surface 21 of the tubular base portion 12 is adjusted, and by rotating the pressing lever around the pivot 302, the amount of inward protrusion of the pair of pressing end surfaces of the U-shaped pressing body 14 from the inner peripheral surface of the tubular sleeve 12 toward the outer peripheral surface of the inner tube X1 is adjusted. This makes it possible to adjust the pressing force against the outer circumferential surface of the inner tube X1. A hollow sleeve 333 is fitted and fixed onto the outer circumferential surface 21 of the tubular base portion 12, and a pin 304 passes through the hollow portion, while a clearance hole in the U-shaped pressing body and an opening in the ring plate pass through the outer periphery of the hollow sleeve 333. The cross-sectional shape of the hollow sleeve 333 is non-circular, and the height from the outer circumferential surface 21 of the tubular base portion 12 is set to approximately reach 310, so that even if an attempt is made to rotate the pressing lever 301 around the pin 304, it will hit the non-circular upper end of the hollow sleeve 333 and will not be able to rotate. The tubular base portion 12 can be manufactured by machining, 3D printer modeling, or lost wax processing. In the case of 3D printer modeling or lost wax processing, the hollow sleeve 333 and the tubular base portion 12 can be processed as a single unit without fitting and fixing the hollow sleeve 333 to the outer peripheral surface 21 of the tubular base portion 12.

[0051] For example, the amount of screwing may be adjusted according to the clearance between the inner peripheral surface of the sleeve and the outer peripheral surface of the inner tube, or the amount of screwing may be adjusted to increase the pressing force with the same clearance. From this viewpoint, it is advisable to set the screwing range, that is, the length of the male screw portion of the U-shaped pressing body. As described above, when the pressing lever is rotated around pivot 302 to the circumferential position at which pressing ends (FIG. 15), it is possible to adjust in advance the amount by which the female threaded portion of ring plate 314 is screwed into the male threaded portion of the U-shaped pressing body so that the pressing lever can be rotated by hand. It is also possible to adjust the pressing force itself within the range in which the pressing lever can be rotated by hand when the pressing lever is rotated around pivot 302 to the circumferential position at which pressing ends.

[0052] As shown in Figure 15, at the non-pressing circumferential position, the distance between the center O of the pivot 302 and the lower end of the curved circumferential surface 312 is R1, at the pressing start circumferential position, the distance between the center O of the pivot 302 and the lower end of the curved circumferential surface 312 is R2, and at the pressing end circumferential position, the distance between the center O of the pivot 302 and the lower end of the curved circumferential surface 312 is R3, with R1 > R2 > R3 being set, so that the pressing body 14 is pressed against the outer peripheral surfaces 14 of the inner and outer tubes X1 and X2 due to the difference between R2 and R3. The difference between R2 and R3 may be set so that the pressing force of the pressing body 14 is sufficient to fix and hold both the inner and outer tubes X1 and X2 in place. For example, if the thickness of the tubular base portion 12 is several millimeters, the difference between R2 and R3 is approximately one-twentieth to one-tenth of that thickness. The curved peripheral surface 312 is set to smoothly change from R1 to R3, and the pressing lever 30 In order to fix and hold the pressing lever 301 at the pressing circumferential position, it is preferable to form an arc portion having a central angle range of, for example, 90 degrees and a constant R3 with respect to the center O of the pivot shaft 302 from the curved circumferential surface portion corresponding to the pressing start circumferential position of the pressing lever 301, and set it so that it gradually becomes smaller from there. The entire curved circumferential surface 312 may be configured from a combination of multiple arc portions that are smoothly connected to each other, or may be an ellipse whose major axis corresponds to R3. It is preferable to determine the curved shape of the grip lever portion 303 so that when the pressing lever 301 is positioned at the circumferential position where pressing begins, the grip lever portion 303 is oriented approximately upright so that it can be easily pressed down by hand force, and so that when the pressing lever 301 is positioned at the circumferential position where pressing ends, the grip lever portion 303 is oriented close to the outer peripheral surface 21 of the tubular base portion 12 so as not to protrude from the outer peripheral surface 21 of the tubular base portion 12 and get in the way, and so that a space is formed between the inner surface of the grip lever portion 303 and the outer peripheral surface 21 of the tubular base portion 12 to insert a finger.

[0053] Even if the screw-in adjustment amount is large, the pressing lever 301 can be firmly fixed in the vertical direction relative to the male thread portion 310 when pressed down without changing the installation direction of the pressing lever 301.

[0054] The fifth embodiment of the present invention will be described below. In the following description, components similar to those in the first embodiment are given the same reference numerals and their description will be omitted. Below, the characteristic parts of this embodiment will be described in detail with reference to Figs. 19 and 21. Regarding the characteristic portion of this embodiment, the tubular base portion 12 is rotatably connected to the annular end surface EN of the outer tube X2. The fastening screw 16 presses the pressing end surface 20 against the outer circumferential surface 13 of the inner pipe X1. This is common to the first embodiment in that the inner and outer tubes X1, X2 are fixed and held together. However, the first embodiment uses the pressing end faces 20 of both legs 18 of a single U-shaped pressing body 14, whereas this embodiment is characterized in that a pair of L-shaped pressing bodies 14 are used.

[0055] More specifically, as shown in FIG. 20, an L-shaped pressing body 14 and a fastening screw portion 16 are provided in the vicinity of each end face 40, 41 of the tubular base portion 12. The L-shaped pressing body 14 has a horizontal portion 330 which forms the pressing load receiving surface 22 on its upper surface, and a vertical portion 332 which extends from one end of the horizontal portion 330 perpendicular to the pressing load receiving surface 22 in the opposite direction, the vertical portion 332 forming a leg, and the pressing end surface 20 being formed at the tip of the vertical portion 332. The L-shaped pressing body 14 has one leg portion that can pass through the through slit 32 of the tubular base portion 12. The horizontal portion 330 has only the leg portion 18, and the other end of the horizontal portion 330 is provided with an abutment portion 60 having an abutment surface 62 at its end that abuts against the outer circumferential surface of the tubular base portion 12. The length of the abutment portion 60 is set so that the pressing end surface 20 of one leg portion 18 can be pressed against the outer circumferential surface 13 of the inner tube X1. The horizontal portion 330 of each L-shaped pressing body 14 is aligned with the end surface 40, 41 of the corresponding tubular base portion 12. The vertical portion 332 projects from the inner tube X1 of the corresponding end surface 40, 41 of the tubular base portion 12. The first embodiment is directed toward the outer circumferential surface of the inner pipe X1 or the outer pipe X2 on the side of the inner pipe X1 or the outer pipe X2. In contrast to the embodiment, the tubular base portion 12 can be omitted from having the through slits 32 through which the legs pass. The length of the horizontal portion 330 of each L-shaped pusher 14 is set so that the corresponding vertical portion 332 protrudes from the corresponding end face of the tubular base portion 12 . The tubular base portion 12 is rotated around the longitudinal direction of the outer tubes X1 and X2 to a desired rotation position. From the viewpoint of convenience when attaching the tubular base portion 12, the pair of L-shaped presser bodies 14 and the pair of fastening screw portions 16 are set on the same side of the tubular base portion 12.

[0056] As described above, for example, in a music stand stand in which a music stand is supported at the upper end of the inner tube X1, if the overall length of the inner tube X1 is short and the height of the music stand cannot be raised to the desired level, the length of the tubular base portion 12 can be set long and L-shaped pressing bodies 14 and fastening screw portions 16 can be provided near each end of the tubular base portion 12 from which the through slits 32 are omitted.As in the first embodiment, the tubular base portion 12 can be rotated around the longitudinal direction of the outer tubes X1, X2 to the desired rotation position until each fastening screw portion 16 is fastened, and by fastening each fastening screw portion 16, the rotation of the tubular base portion 12 around the longitudinal direction of the inner and outer tubes X1, X2 can be fixed, and the inner and outer tubes X1, X2 can be fixed and held together by the pair of L-shaped pressing bodies 14.

[0057] On the other hand, when the length of the tubular base portion 12 is short, an L-shaped pressing body 14 and a fastening screw portion 16 may be provided in a similar manner only at one end of the tubular base portion 12, as shown in FIG. 21, or a U-shaped pressing body 14 may be provided so as to straddle the tubular base portion 12, as shown in FIG. 19.

[0058] It is also possible to set the fastening screw portion 16 or the pressing lever 301 independently for each L-shaped pressing body 14 of the tubular base portion 12, with one being the fastening screw portion 16 and the other being the pressing lever 301.

[0059] The sixth embodiment of the present invention will be described below. In the following description, components similar to those in the first embodiment are given the same reference numerals and their description will be omitted. Below, the characteristic parts of this embodiment will be described in detail with reference to Figs. 22 to 24. Regarding the characteristic portion of this embodiment, the tubular base portion 12 is rotatably connected to the annular end surface EN of the outer tube X2. The fastening screw 16 presses the pressing end surface 20 against the outer circumferential surface 13 of the inner pipe X1. The second embodiment is similar to the first embodiment in that the inner and outer tubes X1 and X2 are fixed and held together. However, in the first embodiment, the pressing end faces 20 of both legs 18 of a single U-shaped pressing body 14 are used, whereas in the present embodiment, the clearance C between the inner and outer tubes X1 and X2 is large. In this case, the lower part of the tubular base portion 12 is inserted into the annular clearance between the inner and outer tubes X1, X2, and a pair of L-shaped pressing bodies 14 is used, as in the fifth embodiment.

[0060] More specifically, as shown in FIGS. 22 to 24, by tightening the fastening screw portion 16, the upper pressing end surface 20 of the L-shaped pressing body 14 is pressed against the outer circumferential surface of the inner tube X1, and the lower abutment surface 62 of the L-shaped pressing body 14 approaches the annular end surface EN of the outer tube X2. As a result, the outer circumferential surface of the inner tube X1 on the opposite side to the L-shaped pressing body 14 is pressed against the inner circumferential surface of the tubular base portion 12 in a line contact manner over the entire length of the tubular base portion 12, and the outer tube X2 is pressed against the lower abutment surface of the L-shaped pressing body 14 in a line contact manner over the entire length of the tubular base portion 12. The L-shaped pressing body 14 is pressed in a manner that it is sandwiched between the outer peripheral surface of the annular groove 64 and the inner and outer tubes X1, X2 are fixedly held together. Note that the lower abutment surface 62 of the L-shaped pressing body 14 fits into the bottom surface of the annular groove 64, preventing the tubular base portion 12 from coming out of the outer tube X2 upward. However, when the annular shoulder portion 17 of the tubular base portion 12 is placed on the annular end face EN of the outer tube X2, the inner and outer tubes X1 and X2 are rotated in the longitudinal direction to a desired rotation position. By rotating the fastening screw portion 16 around the center, the outer tube X of the tubular base portion 12 is fastened. 2 can be prevented from slipping out upward, and the annular groove 64 may be omitted.

[0061] As described above, unlike the first embodiment, it is not necessary to provide a step on the inner peripheral surface of the tubular base portion 12 to provide an annular shoulder portion 17, but it is sufficient to provide an annular shoulder portion 17 on the outer peripheral surface of the tubular base portion 12. Unlike the first embodiment, the opposite side of the outer peripheral surface of the inner tube X1 that the L-shaped pressing body 14 abuts on is not pressed against the inner peripheral surface of the outer tube X2, and the outer tube X2 is pressed against the lower side of the L-shaped pressing body 14. Since the outer tube X2 is pressed in a manner of being sandwiched between the contact surface 62 and the outer circumferential surface of the tubular base portion 12, the outer tube X2 is not necessarily strong enough to withstand the pressing load, for example, if it is made of a thin metal or resin. It is not necessary for the lens to be made of a metal that can ensure the required degree of accuracy. The clearance C between the inner and outer tubes X1 and X2 is defined by the annular shoulder 17 of the tubular base 12. As long as the reduced diameter portion can be inserted, any suitable length is acceptable. For example, in the case of a music stand, it is preferable that the thickness is approximately the same as the thickness of the outer tube X2, which is a few millimeters. In addition, the vertical positional relationship between the inner and outer tubes X1, X2 does not need to be such that the inner and outer tubes X1, X2 overlap each other as shown in the figure, but rather the inner tube X1 is positioned so that the upper pressing end face 20 of the L-shaped pressing body 14 can be pressed against the outer peripheral surface of the inner tube X1.

[0062] Although the embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and changes without departing from the scope of the present invention. For example, in the first embodiment, from the viewpoint of protecting the outer surface of the inner pipe X1, the fastening screw portion 16 The tip of the male screw portion 26 of the outer tube X2 or the female screw portion 34 of the tubular base portion 12 is inserted through the female screw portion 34 of the outer tube X2 or the tubular base portion 12 so as not to come into contact with the outer surface of the inner tube X1. In the case where the inner and outer pipes X1 and X2 are made of metal, in addition to the pressing end surface 20 of the pressing body 14, the tip of the male screw portion 26 of the fastening screw portion 16 contacts the outer surface of the inner pipe X1, so that the outer pipe X2 is pressed against the inner pipe X1. This makes it possible to more firmly fix the position of the inner and outer pipes X1, X2, and is effective in supporting a heavy object at a predetermined height by either the inner or outer pipe X1, X2 with the inner and outer pipes X1, X2 oriented vertically.

[0063] For example, in the first embodiment, the fastening screw portion 16 has a male thread portion 26 and a head portion 28 that is gripped and rotated by fingers, whereas the outer circumferential surface 15 of the outer tube X2 is provided with a female thread portion 34. However, the present invention is not limited to this, and the male thread portion 26 may be formed on the outer circumferential surface 15 of the outer tube X2. Alternatively, the fastening screw portion 16 may be in the form of a nut that screws onto the male thread portion 26. For example, in the first embodiment, a single fixed support jig is provided at a predetermined position of the inner and outer pipes X1 and X2. However, the present invention is not limited to this. For example, when a pair of through slits 32 are provided at an interval in the longitudinal direction of the inner and outer pipes X2, the pair of through slits 32 may be fixed to the inner and outer pipes X1 and X2. It is also possible to provide a plurality of sets of 2 in the circumferential direction of the inner and outer tubes X1, X2, and provide a plurality of pressing bodies accordingly. In each pressing body, it is possible to select individually and independently which of the fastening screw portion 16 and the pressing lever 301, which are common as a pressing load applying portion that applies a pressing load to a pressing load receiving portion of the pressing body 14, is to be adopted. [Brief description of the drawings]

[0064] [Figure 1] 1 is an overall perspective view of a fixing support jig according to a first embodiment of the present invention; [Diagram 2] FIG. 2 is an exploded perspective view of the fixing support jig according to the first embodiment of the present invention. [Diagram 3] 1 is a perspective view of a tubular base portion 12 of a fixing support jig according to a first embodiment of the present invention. [Figure 4] FIG. 2 is a perspective view of a pressing body of the fixing support jig according to the first embodiment of the present invention. [Diagram 5] FIG. 2 is a perspective view of a fastening screw portion of the fixing support jig according to the first embodiment of the present invention. [Figure 6] 1 is a side cross-sectional view of a fixing support jig according to a first embodiment of the present invention. [Figure 7] 2A to 2C are cross-sectional views of the fixing support jig according to the first embodiment of the present invention taken along line AA before and after fastening with a fastening screw. [Figure 8]5A to 5C are cross-sectional views along line BB of the fixing support jig according to the first embodiment of the present invention before and after fastening with a fastening screw. [Figure 9] 5 is a view corresponding to FIG. 2 of a fixing support jig according to a second embodiment of the present invention. FIG. [Figure 10] 7 is a view corresponding to FIG. 6 of a fixing support jig according to a second embodiment of the present invention. FIG. [Figure 11] 1 is a perspective view of a music stand to which a fixing support jig according to a first embodiment of the present invention is applied. [Figure 12] FIG. 11 is an exploded view of a fixing support jig according to a fourth embodiment of the present invention. [Figure 13] FIG. 11 is a perspective view of a fixing support jig according to a fourth embodiment of the present invention. [Figure 14] FIG. 11 is a cross-sectional view of a fixing support jig according to a fourth embodiment of the present invention. [Figure 15] 13A to 13C are diagrams illustrating the operation of a fixing support jig according to the fourth embodiment of the present invention. [Figure 16] 4 is a view corresponding to FIG. 2 of a modified example of the fixing support jig according to the first embodiment of the present invention. FIG. [Figure 17] 7 is a view corresponding to FIG. 6 of a fixing support jig according to a third embodiment of the present invention. FIG. [Figure 18] 7 is a view corresponding to FIG. 6 of a modified example of the fixing support jig according to the first embodiment of the present invention. [Figure 19] FIG. 13 is a diagram of a fixing support jig according to a fifth embodiment of the present invention. [Figure 20] FIG. 13 is a diagram of a fixing support jig according to a fifth embodiment of the present invention. [Figure 21] FIG. 13 is a diagram of a fixing support jig according to a fifth embodiment of the present invention. [Figure 22] 2, showing a fixing support jig according to a sixth embodiment of the present invention. FIG. [Figure 23] FIG. 13 is a diagram of a fixing support jig according to a sixth embodiment of the present invention. [Figure 24] FIG. 13 is a cross-sectional view of a fixing support jig according to a sixth embodiment of the present invention. [Explanation of symbols]

[0065] D Head diameter F Music stand L1 Leg length L2 Leg length 10 Fixed support jig X1 inner tube X2 outer tube 12 Tubular base part 13Outer surface 14 Pressing body 15 Outer surface 16 Fastening screw 17 Circular shoulder 18 Legs 19 Inner surface 20 Pressing end face 21Outer surface 22 Load bearing surface 24 Fool's Hole 25 Protrusion 26 Male thread 28 One end 32 Slit through hole 34 Female thread 36 Female thread 38 Grub Screw 40 End circumference 42 Aperture 60 Contact part 62 Contact surface 100 Music Stand 106 Tripod part 300 Press lever mechanism 301 Pressing lever 302 Axis 303 Grip lever part 304 Pin 308 Rotating part 310 Space 312 Curved Surface 314 Ring Plate 333 Hollow Sleeve 335 Male thread 337 Female thread

Claims

1. A fixing support jig for fixing and supporting a heavy object at a predetermined height, wherein at least one of the inner tubes has a circular cross-section, both extending vertically and fitting together, and interposed between an inner tube and an outer tube, A tubular base portion is provided on its outer surface, having a female threaded portion and a pair of through holes flanking the female threaded portion, and is attached and fixed to the outer surface of one end of the outer tube, The tubular base portion is composed of a first outer fitting portion that extends from one end toward the outer tube and whose inner circumferential surface is fitted onto the outer tube with a first predetermined clearance facing the outer circumferential surface of the outer tube, and a second outer fitting portion that extends from one end toward the inner tube and whose inner circumferential surface is fitted onto the inner tube with a second predetermined clearance facing the outer circumferential surface of the inner tube, with one of the pair of through holes provided in the first outer fitting portion and the other of the pair of through holes provided in the second outer fitting portion. Furthermore, the pressing body has a pressing load receiving portion having a pressing load receiving surface with a roughly U-shaped longitudinal cross-section and a clearance hole, and a pair of legs spaced apart from each other in the extending direction of the pressing load receiving portion, The fastening screw portion has a male screw portion that can be pressed and fixed against the aforementioned pressing load receiving portion and can be screwed into the female screw portion, The pair of legs each have a pressing end face, one of which is capable of being pressed against the outer circumferential surface of the inner tube, and the other of which has a pressing end face capable of being pressed against the outer circumferential surface of the outer tube. A fixing support jig characterized in that, when supporting a heavy object with either the inner or outer tube, the fitting position of the inner tube to the outer tube is adjusted according to a predetermined height of the heavy object, the tightening screw portion is passed through the clearance hole, the male screw portion is screwed into the female screw portion, one of the pair of legs is passed through the through hole of the first outer fitting portion, the corresponding pressing end face is brought into surface contact with the outer surface of the inner tube, and the outer surface of the inner tube opposite to the surface contact portion of the pressing end face to the inner surface of the outer tube or the tubular base portion is pressed and fixed, and the other of the pair of legs is passed through the through hole of the second outer fitting portion, the corresponding pressing end face is brought into surface contact with the outer surface of the outer tube and pressed and fixed.

2. The fixing support jig according to claim 1, wherein a male thread is provided at one end of the outer tube, and a female thread that can be screwed onto the male thread is provided on the inner circumferential surface of the tubular base portion.

3. The fixing support jig according to claim 2, wherein the other pressing end face has a complementary shape that makes close contact with the threaded portion of the outer tube.

4. Each end of the aforementioned load-receiving portion is provided with a leg portion extending in the direction opposite to the load-receiving surface. The tip of the leg portion has the pressing end face, The fixed support jig according to claim 1, wherein the length of each leg from the pressing load receiving surface to the pressing end surface is set according to a first predetermined clearance and a second predetermined clearance.

5. The fixing support jig according to claim 1, wherein the other of the pair of legs is passed through the through hole of the second outer fitting portion, and the corresponding pressing end face is brought into surface contact with the outer surface of the outer tube, and the outer surface of the inner tube opposite to the portion of the pressing end face that is in surface contact with the inner tube is pressed and fixed against the inner surface of the outer tube or the tubular base portion.

6. The fixing support jig according to claim 4, wherein the length of each leg is set so that the pressing end face contacts each outer surface simultaneously when the fastening screw is tightened.

7. The fixing support jig according to claim 1, wherein the inner diameter of the second outer fitting portion is set to be smaller than the inner diameter of the first outer fitting portion, an annular shoulder portion is formed at the connecting portion between the first outer fitting portion and the second outer fitting portion, and the annular shoulder portion is placed on one end of the outer tube.

8. The pressing end face has a hardness such that it does not deform when pressed against the outer surface of the inner tube. The pressing end face is formed to conform to the outer circumferential surface of the inner tube. The fixed support jig according to claim 1.

9. The inner tube and the outer tube are each cylindrical, and the fixing and securing of the outer surface of the inner tube against the inner surface of the outer tube is achieved by pressing and securing the outer surface of the inner tube opposite to the pressing and securing portion by the pressing end face against the inner surface of the outer tube in a vertical line contact manner, thereby fixing and supporting the outer tube with respect to the inner tube by three support points, as described in claim 1.

10. The aforementioned tightening screw portion has a shank portion and a male screw portion extending downward from the lower surface of the shank portion. An annular surface is formed on the lower surface, surrounding the male screw portion. The fixing support jig according to claim 1, wherein the male threaded portion is screwed into the female threaded portion through the clearance hole, causing the lower surface of the shank portion and the pressing load receiving surface of the pressing body to come into contact, thereby integrally pressing and fixing the fastening threaded portion and the pressing body to the inner pipe and screwing and fixing them to the outer pipe.

11. The fixing support jig according to claim 10, wherein the tightening screw portion has a head portion that can be rotated by pinching it with your fingers at the end of the shank portion opposite to the end of the male screw portion.

12. The fixed support jig according to claim 1, wherein the fixed support jig is made of metal, the pair of through holes are provided so as to extend in the circumferential direction of the inner and outer tubes, with a predetermined distance between them in the longitudinal direction of the inner and outer tubes, and a heavy object is supported at a predetermined height by either the inner or outer tube.

13. The fixed support jig according to claim 4, wherein the difference between the length of one leg and the length of the other leg is set according to the thickness of the outer tube and the difference between the first predetermined clearance and the second predetermined clearance.

14. The fixing support jig according to claim 1, wherein the rotation of the tubular base is prevented by fastening the aforementioned fastening screws, and the inner and outer tubes are fixed and held in a predetermined fitting position.

15. In the pressing body on the side of the outer tube that is close to the fitting portion end of the outer tube and the inner tube, an insertion hole is provided in the thickness direction of the pressing body from the side of the pair of opposing sides that constitute the pressing body that is close to the end of the outer tube, and the end face of the outer tube that is close to the fitting portion is provided with an elongated hole with a circular cross-section that has a circular opening on the end face and extends through to the side of the outer tube that is close to the end, and an insertion rod is further provided that can be inserted from the circular opening into the elongated hole, and by inserting the pair of pressing bodies into the pair of through holes, the elongated hole communicates with the insertion hole, and the tip of the insertion rod is inserted into the insertion hole, thereby holding the pair of pressing bodies within the pair of through holes, the elongated hole has a female screw portion, and the insertion rod is a grub screw that can be screwed into the female screw portion of the elongated hole, and as the grub screw is screwed into the elongated hole, the tip of the insertion rod The fixed support jig according to claim 1, wherein the pair of pressing bodies are detachably held within the pair of through holes by being inserted into the holes.

16. A music stand having the fixed support jig described in claim 1, wherein the inner tube or the outer tube supports a music stand, musical instrument, microphone, or amplifier by the end opposite to the fitting portion of the inner and outer tubes.

17. The step of fitting a tubular base with a circular cross-section on its inner surface onto the upper end of the outer tube, The steps include: fitting the inner tube into the tubular base or outer tube; The process involves rotating the tubular base around the longitudinal direction of the outer tube to a desired rotational position, The process involves pressing the tubular base from the outside toward the outer surface of the inner tube in the thickness direction of the tubular base, thereby fixing the tubular base in a desired rotational position around the longitudinal direction of the outer tube, while simultaneously pressing the outer surface of the inner tube on the opposite side toward the tubular base or the inner surface of the outer tube to fix and hold the inner and outer tubes together in the longitudinal direction, and A method for fixing and supporting inner and outer pipes, characterized by having the following:

18. Furthermore, by pressing the tubular base from the outside toward the outer surface of the outer tube in the thickness direction of the tubular base, the tubular base is fixed in a desired rotational position around the longitudinal direction of the outer tube, while the outer surface on the opposite side of the outer tube is pressed against the inner surface of the tubular base to fix and hold the inner and outer tubes together in the longitudinal direction. A method for fixing and supporting inner and outer pipes according to claim 17, comprising:

19. The inner circumferential surface of the tubular base is provided with a reduced diameter section set to be larger than the diameter of the inner tube and an expanded diameter section set to be larger than the diameter of the outer tube, and an annular shoulder is formed at the connection point between the reduced diameter section and the expanded diameter section. The method for fixing and supporting inner and outer tubes according to claim 18, wherein the annular shoulder portion is placed on the annular upper end surface of the outer tube, and the tubular base is rotated at a desired rotational position about the longitudinal direction of the outer tube.

20. A U-shaped pressing body is provided that presses against the outer surface of the inner and outer tubes from the outside of the tubular base in the thickness direction of the tubular base, and has a pair of legs, each having a pressing end face at its tip that presses against the outer surface of the inner and outer tubes. Accordingly, the outer surface of the tubular base is provided with a pair of through slits through which the pressing end faces can pass. The method for fixing and supporting inner and outer tubes according to claim 19, wherein the length of each leg portion is selected according to the diameter of the inner and outer tubes and the width of the annular shoulder portion.

21. A medical stand having the fixed support jig described in claim 1, wherein casters are provided on the end of the inner tube or the outer tube opposite to the fitting portion of the inner and outer tubes, making it movable, and the end of the outer tube or the inner tube opposite to the fitting portion of the inner and outer tubes supports an intravenous drip, monitor, and lighting.

Images